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Welcome, Guest You have to register before you can post on our site. Username    Password    Remember me Search Forums (Advanced Search) Forum Statistics » Members: 58,051 » Latest member: kyzuvdog » Forum threads: 7,715 » Forum posts: 8,582 Full Statistics Online Users There are currently 157 online users. » 4 Member(s) | 151 Guest(s) Applebot, Bing, kyzuvdog, NolanAbott, Securitymhz, Sobecoap Latest Threads The advantages of anodize... Forum: Knowledge & Technique Last Post: toyota1515 10-15-2025, 09:24 AM » Replies: 0 » Views: 65 Which boats resort to alu... Forum: aluminium faq Last Post: askaluadmin 10-15-2025, 09:16 AM » Replies: 1 » Views: 686 Why Aluminum Extrusion is... Forum: aluminium faq Last Post: toyota1515 10-15-2025, 09:14 AM » Replies: 0 » Views: 311 Looking for suppliers – A... Forum: Buying Leads Last Post: askaluadmin 09-12-2025, 08:12 AM » Replies: 0 » Views: 2,875 Sell Aluminum 6063 Forum: Selling Leads Last Post: askaluadmin 09-12-2025, 08:00 AM » Replies: 0 » Views: 2,836 Is a carbide drill best o... Forum: aluminium faq Last Post: toyota1515 09-10-2025, 09:18 AM » Replies: 0 » Views: 5,727 5052-H32 aluminum sheets ... Forum: Knowledge & Technique Last Post: toyota1515 09-04-2025, 02:42 AM » Replies: 0 » Views: 4,128 Advantages of Haomei Alum... Forum: Knowledge & Technique Last Post: hmwadeseo 09-02-2025, 07:11 AM » Replies: 0 » Views: 3,883 Advantages of Aluminum Co... Forum: Knowledge & Technique Last Post: hmwadeseo 09-02-2025, 07:08 AM » Replies: 0 » Views: 3,697 What is the function of p... Forum: aluminium faq Last Post: hmwadeseo 08-11-2025, 06:33 AM » Replies: 0 » Views: 8,748

Aluminum alloy characteristics of different brands Posted by: haomeialu - 02-25-2018, 06:33 AM - Forum: Knowledge & Technique - Replies (1) The International Alloy Designation System is the most widely accepted naming scheme for wrought alloys. Each alloy is given a four-digit number, where the first digit indicates the major alloying elements, the second — if different from 0 — indicates a variation of the alloy, and the third and fourth digits identify the specific alloy in the series. For example, in alloy 3105, the number 3 indicates the alloy is in the manganese series, 1 indicates the first modification of alloy 3005, and finally 05 identifies it in the 3000 series.     1000 series are essentially pure aluminium with a minimum 99% aluminium content by weight and can be work hardened.     2000 series are alloyed with copper, can be precipitation hardened to strengths comparable to steel. Formerly referred to as duralumin, they were once the most common aerospace alloys, but were susceptible to stress corrosion cracking and are increasingly replaced by 7000 series in new designs.     3000 series are alloyed with manganese, and can be work hardened.     4000 series are alloyed with silicon. Variations of Aluminum-silicon alloys intended for casting (and therefore not included in 4000 series) are also known as silumin.     5000 series are alloyed with magnesium, and offer superb corrosion resistance, making them suitable for marine applications. Also, 5083 alloy has the highest strength of not heat-treated alloys.     6000 series are alloyed with magnesium and silicon. They are easy to machine, are weldable, and can be precipitation hardened, but not to the high strengths that 2000 and 7000 can reach. 6061 alloy is one of the most commonly used general-purpose aluminium alloys.     7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminium alloy (ultimate tensile strength up to 700 MPa for the 7068 alloy).     8000 series are alloyed with other elements which are not covered by other series. Aluminium-lithium alloys are an example   Industrial aluminum profile gradually becomes a "new star" of aluminum industry in th Posted by: haomeialu - 02-25-2018, 06:26 AM - Forum: Knowledge & Technique - No Replies In the blink of an eye, 2017 is coming to an end. In the past year, China's aluminum industry is a time to be called "moisture", especially in the second half of the country again tightened real estate policies, to rely mostly on architectural aluminum business "worse". The so-called "people are in a state of poverty", in the construction of aluminium profiles once again "hit the wall" aluminum enterprises began to focus on industrial aluminum profiles. Relative architectural aluminum, industrial aluminum higher request to enterprise's production technology and equipment, in the early stage of the development, may need to aluminum companies invest a lot of money, for the operating conditions is not very ideal aluminum makers may be unaffordable. But the introduction of the country's 13th five-year plan may encourage aluminum companies to "gamble" for future returns. From the past "twelfth five-year" period of domestic aluminum consumption structure, the transportation is one of the important consumer sector, industrial aluminum profile, in 2015, transportation quantity 21% aluminum, accounted for 6% lower than the global average, with the development of traffic vehicle lightweight, proportion will also have faster growth. The transportation industry can be divided into four areas: automobile manufacturing, shipbuilding, rail transit and aerospace. Automobile industry: In the latest "13th five-year" plan, the auto industry has not been cut into the overcapacity industry, but it is the industry that the country needs to develop vigorously. In march of this year, the China association of automobile manufacturers issued "views" much starker choices-and graver consequences-in "automobile industry development planning", according to "much starker choices-and graver consequences-in planning objectives, off sales reached 28 million cars in China in 2020, exports accounted for 10%, the total export scale to 2.8 million vehicles, including brand new energy auto sales to 1 million in China. Automotive engineering society of China published "energy conservation and new energy automotive technology roadmap" clearly put forward, in 2020, 2025 and 2035, production and sales scale will reach 30 million units in vehicles, 35 million, 38 million vehicles, including sales of new energy vehicles proportion to reach 7%, 15%, and 40%, respectively. According to the latest technology roadmap for energy conservation and new energy vehicles, in 2030, the amount of aluminum used in automobiles is more than 350 kg. At present, the average amount of aluminium in developed countries is 145kg, compared with 105kg in China and 350kg. Therefore, for the automobile manufacturing industry, the future aluminum market space is very broad. At present, all the big car companies have started to increase the use of aluminum in cars. Jaguar land rover's latest domestic model, jaguar XFL, even USES an all-aluminum body, with an aluminum penetration rate of 75%. In addition, such as Mercedes, Cadillac and so on, the popularity of aluminum in passenger cars seems to be only a matter of time. And popularization of vehicle is most likely to achieve full aluminium car city express transport, according to the express industry "change plan", the next five years, urban express car to replace all with aluminum alloy new energy vehicles. Shipbuilding industry: Mainland China has more than 18000 km of coastline, there are more than 500, more than 500 square meters of islands island coastline of more than 14000 kilometers, the demand for ships is quite large, combined with the periphery of the scramble for China's maritime rights and interests in recent years, bring huge challenges the Marine management and law enforcement. To this end, the party "18th party congress" put forward the goal of "building maritime power". And made in China 2025 also includes Marine engineering equipment and high-tech ships in one of the top ten areas. Due to its huge advantages and excellent corrosion resistance, aluminum is undoubtedly an important material used in the future construction of ships. The aluminum alloy high-speed law enforcement official boat has been serving in the U.S. coast guard, Japan coast guard and other Marine law enforcement agencies. Some countries still use aluminum alloy build the yachts and fishing boats, boat, high speed boat, work craft, glider, hydrofoil, hovercraft, hydrofoil, transport, patrol boat and mine ships, etc. In the current Marine transport ships, the use of aluminum alloy is also very high, in many key parts have succeeded in replacing the steel, and gradually show the advantages. However, our country is not yet officially started in this field, which is undoubtedly a huge market with the population base of our country. Rail transit: "Much starker choices-and graver consequences-in planning according to the country, by 2020, the national railway mileage will reach 140000 km to 150000 km, including high speed railway is 50000 km to 50000 km, to be completed during the period of" much starker choices-and graver consequences-in "high-speed rail total mileage of 33000 km, 16000 km than at the end of the 12th five-year increased 1.0625 times, built high-speed network basic skeleton. At the same time, the state has also reduced the number of people in major cities reporting the minimum number of subway trains from 3 million to 1.5 million, which would increase the number of cities that can build the subway from 30 to 90. The main material, whether it is high-speed rail or subway car, is aluminum. According to experts, the compound annual growth rate of rail transit equipment manufacturing should be over 22 percent from now until 2030. Industry experts pointed out that those who maglev train and in more than 200 kilometers per hour of high-speed train car body must adopt aluminum alloy material, at 350 kilometers per hour above the train carriages all aluminium profile should be used in addition to the chassis. The manufacture of rail vehicles not only needs to apply the large sections, but also use some boards, foil, pipes, forgings, etc., and the small sections such as doors and Windows, luggage racks, decorative pieces, storage cabinets, carts and so on. Generally speaking, the aluminium alloy used in a high-speed railway carriage is about 10 tons, and the weight of the whole body is 30% ~ 50% less than that of all steel used. At present, maglev vehicles and high-speed trains with speeds of more than 200km/h have all been aluminized, and the aluminizing rate of other rail car bodies has exceeded 40 per cent. It is provided by southwest aluminum with 13,000 aluminum and aluminum railway trains, which have been successively put on the railway and shenhua railway line in China, which is in good condition. Compared with stainless steel, all aluminum trucks have a reduction of about 700 kg per vehicle. Rail transit aluminum, has become the future domestic aluminum profile market new blue sea. Although the main aluminum alloys of railway cars are mainly purchased from state-owned aluminum enterprises and large private aluminum enterprises, it is always right to be prepared when the flood orders come in the future. Aerospace industry: In aerospace action again and again this year in China, the first issued "on the guidance to promote the development of general aviation", put forward during the period of "much starker choices-and graver consequences-in" general aviation development goal: by 2020, built more than 500 general airport, general aircraft amounting to more than 5000 years for atc reaches more than 2 million hours. The three figures are 1.67 times, 2.29 times and 2.72 times in 2015, with investment exceeding 1 trillion yuan. Soon after, a Chinese aero-engine company was set up to acquire the technology ownership of the world's largest transport aircraft, the an225. Avic established the helicopter company and general aircraft company, Chinese business flying the ARJ21 new regional aircraft will be delivered batch of production and operation, the C919 large passenger aircraft design and manufacturing to testing, forensics, and will deliver it. The aviation industry's "Chinese dream" is encouraging. In foreign countries, China's aviation aluminum is also favored by the world's two largest aviation giants, Boeing and airbus. In may, the company signed a procurement framework agreement between 2017 and 2023 with French airbus, becoming the sole supplier of a certain type of aluminium alloy for airbus. On October 27, 27, Boeing company in tianjin, China announced that were signed and shandong nanshan aluminium aviation aluminum supply initial agreement, the future Boeing aircraft aluminum sheet will be provided by the company. Another aluminum industry leader in shandong, yuhang alloy, has also been investigated by Boeing, a us company, and believes further cooperation will emerge in the future. Although aerospace may is the highest technical threshold in four areas, but the domestic several aluminum enterprises successfully get orders, will undoubtedly bring aluminum industry, will also bring more of the aluminum companies in improving localization rate of this kind of high-end aluminum, aluminum giant with the world "to break off the wrist". In today's real estate market gradually came to the bottleneck, architectural aluminium profile of the road ahead is no longer as wide as before, the transformation of production of industrial aluminum, no matter from the policy, or on the market of it is the trend of The Times.   Mobike: new world of aluminum applications Posted by: haomeialu - 02-25-2018, 06:23 AM - Forum: Knowledge & Technique - No Replies Inadvertently, in city life shuttle vehicle with a "special" - share the bike, and worship the bike (mobike) is one of the most let a person familiar with the industry, a netizen called 2016 live in the city if you don't know the worship the bike seems to be OUT! Why is a little bike so eye-catching? It is mainly because of the technology of the "motorcycle", including all-aluminum body, solid proof tire, axle transmission, Internet of things and other advanced technologies. Here we focus on the all-aluminum frame used by mobike. It is well known that light, fast and flexible is the ultimate goal of a bicycle frame, and the materials used in bicycle frame are generally as follows: Chrome molybdenum steel frame: before the 1990s, the bicycle frame was dominated by chrome molybdenum steel. Its distortion performance and tensile properties are good, and the high temperature of welding will not affect the material. The price is cheap, but the weight is heavy and easy to be oxidized. Carbon fiber frame: light, and can absorb the impact of the ground, the material of the reverse force fast, is the ideal bicycle frame material. The higher the degree of carbon fiber, the higher the elasticity of tonnage, and the higher the price. There are several manufacturing methods, such as adhesives on the mold, overlapping carbon fiber, heat treatment, solidification, molding, etc. Titanium frame: titanium is 55% lighter than steel, and it is not easy to oxidize. In order to improve tensile strength, there are titanium alloys such as mixed aluminum and vanadium. Welding must be done in a vacuum, such as processing complex, the frame is expensive. Aluminum frame: aluminum alloy frame light and rigid. The weight of one frame is only 1 kilogram, and the rust resistance is excellent. Performance in the frame, aluminum alloy frame under the weight of the same material can withstand more outdoor weathered the test of special frequent rain the weather of the south, all aluminum frame is more suitable for the bicycle used in outdoor environment demand. However, from the practical application experience, there is still a lot of room for improvement. First of all, from the official operating cost, the motorcycle cost of the whole aluminum body is decreasing. It is understood that in the early stage of the production of the construction plant in jiangsu, the initial production cost reached 6000 yuan per vehicle, and then the cost of production increased to 3,000 yuan. Second, for the aluminum frame itself, it is light, performance is excellent. Therefore, in the future, with the continuous growth of the Shared bicycle market, there will be a lot of room for development of the all-aluminum frame. According to the China bicycle association, China's bicycle production in recent years about 80 million vehicles a year, in terms of Shared bicycle market, according to public information display, including worship, ofo: nearly 30 Shared bicycle manufacturers accumulated on the Shared cycling in cities have more than 300000 vehicles, mainly concentrated in Beijing, Shanghai, guangzhou, shenzhen, chengdu, etc. According to wang xiaofeng, co-founder and CEO of mobike, in December 2016, there were more than 100, 000 in a single city in Shanghai, and mobai planned to complete 100,000 vehicles in chengdu. According to public data, the weight of a small orange car with a aluminum alloy frame is 25 kilograms. With the development of related technologies and the reduction of material costs, aluminum alloy will be used more on the bicycle frame, and the all-aluminum bicycle frame will definitely bring us a better experience. The aluminum market for bicycles is not to be underestimated. In addition, according to relevant people, the aluminum alloy components used in the motorcycle are mainly purchased from the new materials company. Mobike, the English name mobike, is an Internet short-distance travel solution developed by hu weiwei's Beijing moai technology co., LTD., which is the smart hardware for the no-load return model. People can quickly rent and return a mobike via a smartphone, and use affordable prices to complete a few miles of short rides. To promote green travel to earth day "a gift". Using the mobike smartphone app, users can use their mobile phones to check their location, then make an appointment and find the car. You can start cycling by scanning the qr code on your car. After arriving at the destination, manually lock the car in the white line area of the street to complete the return procedure. Mobike has abandoned a stationary pile, allowing users to park their bikes in a parked area with a government draw line. Users simply close their bikes and leave. Embedded chip, GPS module and SIM card are integrated inside the body lock so that mobber can monitor the specific location of the bike on the road.   Why does aluminium product processing aluminium alloy need sandblasting oxidation tre Posted by: aluhm - 02-25-2018, 06:16 AM - Forum: aluminium faq - No Replies Why does aluminium product processing aluminium alloy need sandblasting oxidation treatment? Why does aluminum alloy need surface oxidation treatment? The surface oxidation of aluminum and aluminum alloy is the most important surface treatment process. The aluminum alloy surface oxidation problem handling q&a based on the current shenzhen aluminum processing plant production needs, combined with the pearl river delta region of aluminium alloy sandblasting oxidation process for decades of production experience, in the form of q&a, blank piece of aluminum oxide before receiving and inspection, oxidation, mechanical finishing, chemical polishing and erosion of electrochemical polishing, oxidation protection before, workpiece clamping, anodic oxidation, anodic oxidation film dyeing and coloring, chemical conversion, and the anode oxidation membrane technology such as closed. Aluminium and aluminium alloy in the atmosphere can naturally formed a layer of oxide film, but the thin membrane (40-50 a) and porous, for amorphous, inhomogeneous and discontinuous film layer, not as a decorative reliable protective film layer. With the continuous development of aluminum products processing industry, more and more widely in the industry with the method of anodic oxidation and chemical oxidation, in aluminium and aluminium alloy surface generates a layer of oxide film, to achieve the purpose of protection a decoration. The oxide film obtained by chemical oxidation was generally 0.3 ~ 4um, and the properties of soft, abrasion and corrosion were lower than that of anodic oxide film. Therefore, it is seldom used alone except for special purpose. However, it has better adsorption capacity, and it can be applied to improve the corrosion resistance and decoration of aluminum products. The oxide film obtained by anodic oxidation process is generally 5-20v m, and the thickness of hard anodic oxide film can reach 60-2500m. The film layer also has the similar characteristics: (I) high hardness of aluminum processing. The hardness of pure aluminum oxide film is higher than that of aluminum oxide film. In general, its hardness is related to the aluminum alloy composition and electrolyte process conditions. The anodic oxide film is not only of high hardness but also good wear resistance. In particular, the porous oxide film has the ability to absorb lubricant, and can further improve the abrasion resistance of the surface. (2) high corrosion resistance of aluminum processing. This is due to the high chemical stability of the anodic oxidation film. The anodic oxidation film of pure aluminum is better than that of aluminum alloy. This is due to the fact that the composition of the alloy or the formation of a metal compound cannot be oxidized or dissolved, which makes the oxide film discontinuous or void, thus greatly reducing the corrosion resistance of the oxide film. Therefore, it is necessary to seal the film after anodic oxidation to improve its corrosion resistance. (3) aluminum processing has strong adsorption capacity. Anodic oxidation of aluminium and aluminium alloy membrane is porous structure, has a strong adsorption capacity, so give hole filling all kinds of pigments, such as lubricants, resin can be further improve protection, insulation, wear resistance of aluminum products and decorative performance. (4) aluminum processing has good insulation performance. The anodic oxide film of aluminum and aluminum alloy has no conductive properties of metal and becomes a good insulating material. (5) strong thermal insulation resistance. This is because the coefficient of thermal conductivity of anodic oxide film is much lower than the pure aluminium anodic oxide film can heat resistance around 15001 c, but pure aluminium can only 660 ℃. In summary, aluminum and aluminum alloys are chemically oxidized, especially after anodic oxidation, and the oxide film formed on its surface has good protective properties. Therefore, it is widely used in aviation, electrical, electronic, mechanical manufacturing and light industry. Ornamental oxidation There are many kinds of aluminum and aluminum alloy decorative oxidation process, which can be divided into two categories: chemical oxidation and electrochemical oxidation. Among them, anodic oxidation treatment is widely used. This is because the oxidation film obtained by anodic oxidation is better than that obtained by all chemical oxidation methods. After chemical or electrochemical polishing of aluminum and aluminum alloy parts, after anodic oxidation treatment, can get bright and clean, high brightness, transparency of oxide film layer, then through dyeing, thunder-and-lightning colour can be obtained by surface. If it is oxidized under a certain technological condition, it can form an imitation glaze layer on its surface, thus obtaining special decorative effect on the surface of aluminum products. According to incomplete statistics, the decorative oxidation process of aluminum and aluminum alloy in our country has developed to dozens of kinds, making the development of China's aluminum processing industry change with each passing day. 1. Chemical oxidation. Aluminium and aluminium alloy chemical oxidation treatment, according to the nature of the solution, can be divided into two categories, alkaline and acidic solution oxidation treatment, according to its membrane layer can be divided into the properties of oxide film, chromate, phosphate coatings film and chromic acid ~ phosphate film, etc. (I) process specification. 1. Specification for chemical oxidation of lye. Anhydrous sodium carbonate (Na2C03) 50g/L. Sodium chromate (Na2Cr04) 15g/L. Sodium hydroxide (NaOH) 25g/L. Temperature of 80-100 'c Time 10-20 min After oxidizing, the parts should be cleaned immediately, and in the 20g/L chromic acid solution and at room temperature for 5 ~ 15 seconds, then clean and dry. The color is golden. The film thickness is 0.5 ~ 1um, suitable for pure aluminum, aluminum magnesium, aluminum manganese alloy. 2. A specification for the oxidation process of phosphate monochromate. Formula 1: phosphate (H3P04) 50--60mL/L. Chromic anhydride (Cr03) 20- 25g/L. Ammonium fluoride (NHOHF2) 3 ~ 3.5g/L. Boric acid (H3B03) 1 ~ 1.2g/L. The temperature of 30-36 'C 3 ~ 6 minutes This method USES phosphoric acid more, so also called phosphating method. The oxide film is colorless to light blue, and the film thickness is about 3-49m. The film layer is dense, the corrosion resistance is high, and the size of the part is unchanged after oxidation, which is suitable for all kinds of aluminum and its alloy. In order to further improve the corrosion resistance, it can also be filled in. Recruit parts by the oxidation after cleaning in the 40-45 g/L of potassium dichromate solution, the temperature is 90-98 ℃, soak for 10 minutes, and then after cleaning in the < = 70 ℃ oven dry can. Suitable for general parts. Can also be in 20 to 30 g/L of boric acid in the solution, the temperature is 90-98 ℃, dipping 10-15 minutes, and then by the cleaning within 70 ℃ oven drying. Suitable for aluminum rivet, etc. Formula 2: phosphoric acid (H3P04) 45g/L. Chromic acid drunk (Cr03) 6g/L. Sodium fluoride (NaF) 3g/L. Temperature 15 ~ 35 ℃ 10-15 min time Thin film, good toughness, high corrosion resistance, suitable for aluminum and aluminum alloy parts after oxidation. Formula 3: phosphoric acid (H3P04) 22g/L. Chromic acid drunk (Or03) 2.--4g/L. Sodium fluoride (NaF) 5g/L. Qing acid (H3BOO 2 g/L At room temperature 15-60 s This method is also known as chemical conductive oxidation. Oxide film colorless transparent; The film is thin, with a magic of 0.3-0.5 um and good conductivity. It is mainly used for flexible aluminum parts. 3. Formula 1: chromic anhydride (Cr03) 4N 6g/L. Sodium fluoride (na-f) lg/L. Potassium ferricyanide [K3Fe (CN) 6] 0.5g/L. Temperature of 30-35 0 c 20-60 s The color of oxide film is iridescent, thin film, good conductive performance, mainly used for aluminum electric parts which have certain requirements for conductive performance. Formula 2: chromic acid drunk (Cr03) 3.5 ~ 6g/L. Sodium dichromate (NaZCrZO7) 3 ~ 3. 5 g/L Sodium fluoride (NaF) 0.8g/L.   how does aluminum alloy processing stress eliminate credit Posted by: aluhm - 02-25-2018, 06:08 AM - Forum: aluminium faq - No Replies Aluminum alloy is the most widely used in industry of non-ferrous metal structural materials, aluminum alloy density is low, but the intensity is high, close to or more than high-quality steel, plastic, can be processed into various profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, in aviation, aerospace, automotive, machinery manufacturing, shipping and widely used in chemical industry. Aluminum alloy in the process especially machining process prone to large deformation and stress lead to size out-of-tolerance scrap, some no deformation at the time the poor tend to produce deformation cause greater system after installed. The existing methods of stress, such as thermal aging stress, vibration aging stress, mechanical drawing, model correction and deep cold composite stress, etc. Heat ageing to stress generally for small parts, is a traditional method to stress, because a lot of aluminum alloy material is very sensitive to temperature, so limits the aging temperature can't is too high, otherwise will reduce the strength of the material. So usually thermal aging in temperature is not higher than 200 ℃, so the stress effect is only about 10-35%. Vibration aging to stress is the use of a controlled vibration energy by holding the vibrator on the surface of the products processed on the processed products, at a specific frequency vibration under processing, so as to achieve the aim of release, to reduce the residual stress in workpiece. This kind of processing method is common in large structural parts, welding and casting parts to stress treatment, the removal effect is about 50-60%. Mechanical stretching method is the principle of eliminating stress after quenching of aluminum alloy plate, add a certain amount of permanent tensile plastic deformation along the rolling direction, make the tensile stress with the original plastic deformation occurred after quenching residual stress superposition, to ease and release residual stress. The results show that the mechanical drawing method can eliminate more than 90% residual stress. However, this method is only suitable for simple parts with simple shape, and it has a high requirement for the homogeneity of the aluminum alloy sheet before stretching, and is mainly used in aluminum processing factories. Loading module and the correction method of cold pressing is in a special finishing the mould, through strict control of set limit to cold plastic to eliminate the residual stress of aluminium alloy forging complex shape, the method is to adjust, not eliminate the overall stress level of the parts, it makes some parts of the residual stress on aluminum alloy products was released at the same time, has the potential to other parts of the residual stress increased. In addition, due to the large residual stress of the workpiece, the deformation of the mould can cause the cold to harden, crack and fracture. While too little deformation causes the stress relieving effect, and the cost of production of plastic mold is high, the difficulty of the orthopedic operation is bigger also, so the limitations of such a method is in practice application.   The application of ultra high strength aluminum alloy in aerospace Posted by: aluhm - 02-25-2018, 06:04 AM - Forum: Knowledge & Technique - No Replies Material is the basis of the aircraft structure, aluminum alloy due to its high specific strength, forming and processing performance is good, good corrosion resistance, will serve as a very important aircraft structure materials, the use of a large proportion in large aircraft structures. Foreign large passenger aircraft from Boeing 707 to now to Boeing 787 and represented a new generation of a large airliner A380, the assessment of comfort, safety, economy and other major commercial performance index, great changes have taken place, the design method is also from the static strength design, damage to the safety design, to the current damage tolerance design, the use of materials from the one-sided pursuit of high strength, the requirement to the fatigue strength of a good material to, besides considering damage tolerance, at the same time, considering the new requirements to the corrosion resistance and low cost, therefore also great changes have taken place in the main structure material, especially with the substantial increase in the amount of advanced composite materials, the traditional great impact the amount of light alloy, such as B787 aircraft composite dosage of 50%, compared to 20% of the amount of aluminum alloy. Aluminium alloys also play a leading role in the use of civilian aircraft such as the A380 superjumbo.The Boeing 777 is a large commercial passenger jet that Boeing launched in the 1990s, using materials that were more mature in the late 1980s and early 1990s, or commoditized materials in the 1990s.Therefore, its selection has certain representativeness. It can be seen from the analysis of the models of the manufacturing enterprises of major international commercial airliners that the high-strength aluminum alloy as the structural material of the aircraft still occupies a very important position.In combination with the overall situation of China's development of large-scale civil aircraft, it can be seen that the ultra high strength aluminum alloy has a broad market application prospect in the aviation field. The application of composite materials in the space structure is expanded, and the application of aluminum alloy in the strategic missile with solid rocket engine is obviously reduced.But in quite a long time in the future, ultra high strength aluminum alloy is still the rocket, the main structure of the space shuttle and the space station and other spacecraft materials, is also one of the important structural materials of missile weapon systems such as.At present, the domestic, outer spaceships, spaceflight and structural components are mainly aluminum alloy. Application of ultra-high strength aluminum alloy in construction industry. With green materials in the building materials (reducing material consumption, recycling) requirements of the increase and the increase of doors and Windows in the building industry area, especially in the construction of sports venues, exhibition hall, light the demand of ultra high strength aluminum alloy profile will be huge. Ultra high strength aluminum alloy, can be used in the construction requirements of lightweight high strength, high plastic profiles, such as sports stadiums, exhibition halls, temporary housing, such as the structure of the material, also can be applied to a certain bearing requirements of aluminium alloy building doors and Windows and glass curtain wall, balcony guardrail, billboards, bridge traffic facilities. Because of the high strength properties of ultra-high strength aluminum alloy, the overall weight of the building will be greatly reduced, the building structure will be simplified, and the construction materials will be reduced.Due to the high plastic properties of the materials, the structure of the building will be further diversified.Due to the good corrosion resistance of the materials, the maintenance cost of the building will be reduced.At the same time, due to the easy recovery of aluminum alloy materials, the construction waste will be reduced and the environment will be beautified, which will greatly reduce the energy consumption of the construction industry and achieve the goal of energy conservation and emission reduction.  The application of ultra high strength aluminum alloy in other industries. Ultra high strength aluminum alloy with high strength, high hardness, low density and excellent corrosion resistance, make its in promoting energy conservation and emissions reduction, lower energy consumption per unit GDP and increase economic efficiency has the important position cannot be ignored.It can not only be used in automobile, aviation, aerospace, construction and other fields, but also can be used in bicycle, textile industry, mould and   Common problems and solutions of aluminum sheet wire drawing Posted by: aluhm - 02-25-2018, 05:58 AM - Forum: Knowledge & Technique - No Replies Nowadays, more and more metal shells of aluminum products are made of metal wire drawing technology, which can play a beautiful and anti-corrosive role. Make products both fashionable and technological. In aluminum wire drawing process, the anode processing special skin membrane technology, can make the aluminum plate surface generating a contains the skin of the composition of the metal film layer, each tiny silk mark is visible, so radiant with fine hair gloss metallic matte. Common problems and solutions of aluminum sheet wire drawing. 1. Uneven drawing: Product of many factors, the problem is one of the most common feeding aluminum plate width size, positioning when drawing wire drawing operation in the roller wear is inconsistent, cause drawing different specifications of the plate edge location drawing texture depth uneven density. (solution: in the treatment of each batch of aluminum sheet on the roller before batch production after maintenance, as well as the backup of a set of the roller, the production process of each production, 100-120, zhang replaced the roller location at a time, to avoid the roller edge wear.) 2. There is a difference between the pattern and the pattern: The biggest factor is that the wire drawing equipment is not well controlled, which leads to a shallow grain. Moreover, after oxidation corrosion, the clarity of brushed aluminum plate decreases again. 3. Surface sand of aluminum plate: Production line in the bath concentration is low, the temperature is too high dusting, two reasons cause this is human factors, is the production personnel did not monitoring in place to bath liquid bath concentration and temperature deviates from the standard process.   What is the formula of aluminum sulfite Posted by: aluhm - 02-25-2018, 03:30 AM - Forum: aluminium faq - Replies (1) Aluminum sulfite is a base. It's conjugate acid, sulfurous acid, is a weak acid. This makes it a relatively strong base. Note that conjugates are always opposites this way: if a base is weak, it's conjugate acid is strong, and vice versa. It is only when a base us extremely weak (and is therefore the conjugate of a very strong acid) that we say that it is not a base and is only a salt. While the strongest bases have hydroxide groups, there are a lot of bases that do not contain hydroxide. Examples include: NH3 -- Ammonia NaCH3CO2 -- Sodium acetate KNO2 -- Potassium nitite 1 AlS 2 AlSO3 3 Al2(SO4)3 4 Al2(SO3)3 5 Al2S3 The formula is [Math Processing Error]Al2(SO3)3, determined by testing for [Math Processing Error]Al3+ and [Math Processing Error]SO33− ions.   Good methods to choose non-slip aluminum plate Posted by: aluhm - 02-24-2018, 07:55 AM - Forum: Knowledge & Technique - No Replies There are many non-slip aluminum plate products and manufacturers in the markets. So many customers don’t know how to choose the proper products for them. So in this article, I am going to tell you the good methods to chose non-slip aluminum plate that suits you. Firstly, look at the material. High-quality aluminum alloy anti-skid plate used in aluminum, thickness, strength and oxide film should meet the relevant national standards. Wall thickness should be more than 1.2 mm, tensile strength of 157 Newton per square meter, yield strength to reach 108 Newton per square millimeter, the oxide film thickness should reach 10 microns. Secondly, see processing. high-quality aluminum alloy anti-slip plate has fine processing, good anti-skid function, good looks, good corrosion resistance and oxidation resistance.  Finally, look at the price, in general, high-quality aluminum alloy anti-skid plate due to high production costs, the price is inferior to the low-grade aluminum alloy anti-skid plate to about 30% higher. At present, the processing of aluminum alloy anti-skid board self-employed more, they do not understand the structural characteristics of aluminum alloy anti-skid and its performance. In order to reduce the cost of cutting corners, product safety risks larger, generally should not be used. The best choice of regular aluminum alloy anti-skid plate manufacturers of products. haomei Aluminum is a professional aluminum checker plate manufacturers in China, its aluminum checker plate products include 1060 aluminum checker plate, 1100 aluminum checker plate, 3003 aluminum checker plate, 3105 aluminum checker plate, 5052 aluminum checker plate, 5083 aluminum checker plate, 5754 aluminum checker plate, 6061 aluminum checker plate, 6063 aluminum checker plate, 6082 aluminum checker plate, diamond aluminum tread plate, three bars aluminum tread plate, five bars aluminum tread plate etc. All the products have high quality and reasonable price.   Various advantages of aluminum plate Posted by: haomeialu - 02-24-2018, 07:48 AM - Forum: Knowledge & Technique - No Replies Is aluminum plate equivalent to floor? No, it's not the same as the floor. Home flooring is usually smooth as a mirror, but its corrosion resistance, anti-skid performance and hardness are less than aluminum plate. In our lives, we can see that we are surrounded by aluminum plate. The appearance of the city's skyscrapers is aluminum. In our home, the refrigerator, microwave oven, the appearance of the sound are aluminum, and your furniture, cabinets are also aluminum. 1, aluminum can be recycled, environmentally friendly. Aluminum can be 100% recovery, different from glass, stone, ceramics, aluminum-plastic panels and other decorative materials, high salvage value. 2, aluminum light weight, good steel, high strength. 3.0mm thick aluminum plate per square weight 8kg, tensile strength 100-280n / mm2. 3, good craftsmanship. Using the first processing after the painting process, aluminum can be processed into a flat, curved and spherical and other complex geometric shapes. 4, uniform coating, color and diverse. Advanced electrostatic spraying technology makes the paint and aluminum attached between the uniform, color and diverse, large selection of space. 5, good weather resistance and corrosion resistance. 6, installation and construction convenient and quick. Aluminum in the factory molding, the construction site without cutting, fixed on the skeleton. 7, aluminum is not easy to tarnish, easy to clean and maintenance. First Previous Next Last