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| Introduction and application of ship aluminum alloy |
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Posted by: haomeialu - 02-05-2018, 07:22 AM - Forum: Knowledge & Technique
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Introduction and application of ship aluminum alloy
At present, ship aluminum alloy used more and more widely in the shipbuilding industry, from kayaks, motorboat, large ship 10000 tons, from civilian to military, from high-speed hovercraft to deepwater submarine, from fishing boats to ocean mining ship in the aluminum alloy material structure with good performance as the hull, ship aluminum fittings, superstructure all kinds of facilities, pipelines and equipment.
ship aluminum alloy plate
The construction and working environment of ship requires good corrosion resistance, weldability, plasticity and certain tensile strength, yield strength, elongation, impact resistance and other properties. The ship aluminum alloys with the most application and the best effect in the ship are pure aluminum, Al-Mg alloy and Al-Mg-Si alloy. In recent years, Al-Mg-Si alloys have also attracted people's interest.
Aluminum alloy plate in ship and ocean engineering is mainly used in the hull structure and compartment superstructure, and often with a small diameter aluminum alloy pipes pipe, large diameter tubes and rods are used for hull structure, the mast member, Liang Zhu, in order to lightweight hull, sometimes use some thin-walled profiles in the hull structure on. The product has good strength, processability and corrosion resistance, and can fully meet the needs of marine applications. haomei aluminium advanced marine aluminum alloy plate and various extrusion profiles production technology, providing forward-looking support for ship and ocean engineering.
![[Image: ship_aluminum.jpg]](http://www.marine-aluminum.com/uploads/171026/ship_aluminum.jpg)
Product features:
It has good corrosion resistance, good weldability and high fatigue strength.
It has been certified by several international classification societies, and the product quality has been guaranteed.
ship aluminum fittings
haomei aluminium ship aluminum plate is mainly made of 5 series and 6 series aluminum alloy, represented by 5083 ship aluminum plate, including 5083, 5086, 5052, 5454, 5456, 5754, 6061, 6063 alloy brands.
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| Comparison of hexagonal aluminium honeycomb and round tube aluminium hone |
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Posted by: haomeialu - 02-05-2018, 07:20 AM - Forum: Knowledge & Technique
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In the field of aluminium honeycomb core, due to reasons such as production technology, aluminium honeycomb is used by people for a long time is not really a hexagonal structure, the more common is the use of many small aluminum bonding, similar to the "honeycomb aluminum honeycomb".
Now, with the improvement of production technology, people begin to gradually use the real hexagonal structure of honeycomb aluminum plate.
aluminium honeycomb
Compared with round tubular aluminium honeycomb, hexagonal aluminium honeycomb has many advantages, mainly including:
1.higher strength: aluminium honeycomb structure has become the most effective and reasonable structure in nature because of its hexagonal geometry. This shape disperses the external forces very well and supports each other, making it a perfect mechanical structure. The structure of tubular aluminium honeycomb will not have this advantage, on the one hand, it will be a good external circle cannot pass out of force is difficult to be dispersed; on the other hand, the bonding area many small tubes is very small, almost concentrated in the round and round the point position, compared with a whole the edge of the bonding area of hexagon, strength is smaller. Round tubular aluminium honeycomb is easy to break apart by hand, but hexagonal aluminum honeycomb is difficult to separate them.
2.lighter weight: because of the structural weakness of round tube honeycomb aluminum plate, in order to ensure enough supporting force, the method of increasing the wall thickness of the round tube is often adopted. The hexagonal honeycomb aluminum plate is not required so that its excellent mechanical structure but also for the people to save a lot of raw materials, under the premise of ensuring the strength, it can use thinner material, so as to make it lighter, this also means that the hexagonal honeycomb aluminum plate can save more raw materials into the.
honeycomb aluminum plate
3.better heat insulation and sound insulation: because hexagonal honeycomb density is smaller, the heat transfer and sound wave of the honeycomb wall is thinner, it is heat insulation, sound insulation performance is better than the round pipe type honeycomb.
4.The cross sectional area of smaller aperture: in the premise of the same, the cross-sectional area of the honeycomb are often less than tubular cellular 1/2, which makes the use of cellular air flow situations, honeycomb can more effectively through more air flow, improve efficiency, save energy.
5.Larger surface area: hexagonal honeycomb has larger surface area when the specific gravity is the same. Hexagonal honeycomb is more efficient when honeycomb is used as catalyst or filter media.
6.More beautiful, neat: with the production technology progress, hexagonal honeycomb aluminum plate arrangement can be very neat, appearance is more beautiful, and the tubular honeycomb aluminum plate is difficult to arrange the relative appearance is not very neat, neat.
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| Commonly used aluminum alloy fittings for ships |
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Posted by: 1-LVDCPN - 02-05-2018, 07:17 AM - Forum: Knowledge & Technique
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Commonly used aluminum alloy fittings for shipsThere are many kinds of aluminum alloy fittings, mainly include: ordinary rectangular windows, windows, windows, skylights, small boats, shutters, windows, doors, hatches, mobile, empty cabin complex weathertight door, springboard, chair, sofa and so on. These marine aluminum fittings for manufacturing alloy 6061, 6N01, 6063, 6082, 1200 and 3003 alloys, they not only have high mechanical properties, but also has very strong corrosion resistance and forming properties and surface anodic oxidation treatment of good performance, Al Si cast aluminum alloy also has some applications.
aluminum extrusion
6063 aluminum alloy is a kind of aluminum alloy with large output and wide application. It is widely used in the manufacture of aluminum alloy fittings for ship, it is a kind of Al-Mg-Si alloy, containing 0.20Si%~0.6Si%, 0.45Mg%~0.9%, has very good extrusion performance, can be extruded in the complex section of hollow large materials, mostly in O, T5, T6 state application. Typical mechanical properties of 6065-T5 aluminum extrusion: tensile strength of 165N/mm2, yield strength 145N/mm2, elongation 12%, Brinell hardness 60, shear strength and fatigue strength of 70N/mm2 is 115N/mm2, elastic modulus 68.3Kn/mm2, shear modulus 25.8KN/mm2, Poisson's ratio of 0.33.
6N01 is a commonly used marine aluminum fittings alloy, heat treatment can be enhanced, its strength than the 6063 alloy, is a heat treatment can enhance the grade of N alloy in Japan, on behalf of Japan (Nippon), although Japan is a kind of alloy, but all the countries in the world won the application. The main application states are T5 and T6, but the T6 state material is used more. The typical mechanical properties of 6N61-T6 aluminum alloy profiles at room temperature are tensile strength 290N/mm2, yield strength 260N/mm2, elongation 12%, positive modulus 68.9Kn/mm2, shear modulus 25.8KN/mm2, Poisson's ratio 0.33.![[Image: marine_aluminum_alloy_fittings.jpg]](http://www.marine-aluminum.com/uploads/171024/marine_aluminum_alloy_fittings.jpg)
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| Technical requirements for the construction of aluminum alloy boats |
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Posted by: 1-LVDCPN - 02-05-2018, 07:14 AM - Forum: Knowledge & Technique
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Technical requirements for the construction of aluminum alloy boats.1 Built aluminum alloy ship shipyard of professional and technical personnel and workers, should be familiar with construction codes at home and abroad Aluminum Alloy ship, feeding groove, master marine aluminum alloy advanced under the residual correction, machining, assembly, welding and deformation control method.
1.2 The welding of marine aluminum alloy is a difficult point in the construction of aluminum alloy ship. The necessary equipment, facilities, personnel and test conditions should be provided.
marine aluminum
1.3 The shipyard should use all kinds of advanced equipment, small deformation,marine aluminum alloy high efficiency welding such as melting semi automatic argon arc welding (MIG), melting stage pulse semi automatic argon arc welding, melting stage automatic argon arc welding (MIG), automatic tungsten argon arc welding (TIG), tungsten argon arc welding (TIG) level.
1.4 Aluminum alloy welding process: usually complete 5083,5356, two kinds of marine aluminum plate of different welding methods and different welding position of welding process qualification approval test.
1.5 Training and research of marine aluminum alloy welder: before the construction of aluminum alloy ship, according to the specification of classification society, all kinds of welding methods of different positions of welder training and certification conditions, the examination qualified, can engage in welding work.
marine aluminum sheet
1.6 The shipyard should have indoor aluminum alloy cutting, processing, assembly, welding and assembly site to meet the requirements of bright, no wind, low dust and clean, and supporting the lifting and launching capacity.
1.7 Marine aluminum sheet degreasing, welding to the oxide film facilities, tools complete. Cleaning and decontamination of marine aluminium sheet is the key process of marine aluminum alloy product construction. There should be pickling bath, electric polishing machine and acetone cleaning process.
marine aluminium sheet
1.8 In the aluminum cutting, blanking and margin correction, the shipyard usually adopts the numerical control plasma cutting, manual plasma cutting and other methods.
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| Advantages of aluminum ribbed plate applied to aluminum ship structures |
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Posted by: 1-LVDCPN - 02-05-2018, 07:13 AM - Forum: Knowledge & Technique
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he marine grade aluminum ribbed plate is a plane structure with several parallel shapes in one direction. The application of marine aluminum ribbed plate shows obvious advantages in structure performance, hull quality and construction period, and improves the performance of the ship structure.
6082 T6 marine grade aluminum ribbed plate
1.geometric accuracy of marine grade aluminum ribbed sheet structures
This is because the section of the component and its positioning are determined by the extrusion die, rather than the traditional plate by manual welding. As a result, the marine aluminum ribbed plate is close to "geometric plane", which is the overall stability and local stability of marine aluminum ribbed sheet, which exceeds the traditional plate.
marine grade aluminum sheet
2.the residual stress in the aluminum ribbed plate structure is very small
The residual stresses in aluminum extruded profiles are generally very small (less than 20Mpa), from the practical point of view, the influence on the carrying capacity can be neglected. The compressive residual stress at the edge of the welded aluminum alloy profile is about 20% of the baseline stress. It can be seen that the marine aluminium ribbed plate is improved both in construction and in service.
marine grade aluminium sheet
3.The marine grade aluminum ribbed plate makes the structure weld less
A large number of welds are not used to connect the common longitudinal sections with aluminum ribbed plate, thus shortening the construction period of the aluminum alloy hull structures.
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| Brief introduction of marine aluminum flange |
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Posted by: aluhm - 02-05-2018, 07:11 AM - Forum: Knowledge & Technique
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he aluminium flanges is the part that connects the pipe and the pipe and is connected to the end of the pipe; also used in the import and export of aluminum flange, for the connection between the two devices. Aluminum flange joint or aluminum flange joint refers to the removable connection between the three flanges, the gasket and the bolt, which are mutually connected as a group of composite sealing structures. Aluminium flanges is also a widely used marine aluminum material, compared with other marine metal materials, aluminum flange has the following advantages:
![[Image: ova_aluminium_flanges.jpg]](http://www.marine-aluminum.com/uploads/171017/ova_aluminium_flanges.jpg)
marine aluminum flange
1.Non-toxic: aluminum itself is no toxicity, so no harm to human body.
2. Corrosion resistance, good corrosion resistance: aluminum alloy flange, the surface can produce hard and dense oxide film, many substances do not produce erosion to it.
3.Chemical resistance: aluminum flange does not produce chemical reactions to many chemicals, and can maintain very good performance.
4. Low temperature resistance: aluminium flanges at low temperature, its strength increases instead of brittleness, so it is an ideal low temperature device material.
5. Good strength: the mechanical property of aluminum flange is inferior to that of steel, but it is higher than that of it. The alloy elements such as copper, magnesium and manganese can be added to make the aluminum alloy reheated, so as to obtain very high strength.
6. Beautiful, suitable for a variety of surface treatment: aluminium flanges and its alloy flange surface oxide film, silver white, relatively beautiful. If the oxidation treatment, the surface of the oxide film is more solid, but also can be painted with brushing and so on. Make a variety of colors and gloss of the surface.
7.No magnetic: aluminum flange is non-magnetic.
8. Light weight: aluminum flange quality is lighter than other materials, can save handling costs and processing costs.
marine grade aluminum flange
Therefore, aluminum flange used as marine grade aluminum is very suitable, so it is widely used by shipbuilding enterprises, and has a very good market prospect.
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| what are some of the marine aluminum |
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Posted by: aluhm - 02-05-2018, 07:07 AM - Forum: aluminium faq
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Aluminum alloy has been used in shipbuilding for more than one hundred years, especially in recent years. Aluminum alloy has been applied in various types of ships. The United States, Japan, the United Kingdom and the former Soviet Union have long regarded aluminum alloy as one of the main materials of ship structure. There are more and more kinds of marine aluminum, such as:marine grade aluminium plate,marine grade aluminum elbows,marine grade aluminum tread sheet etc.
At present, Japan has more than 100 companies are building aluminum alloy high-speed ships, passenger ships and fishing boats, the total number of aluminum alloy ships has exceeded 2500 ships,there are about 1000 ships, such as aluminum alloy passenger ships and scientific survey ships built in northern Europe, France and australia.
So, what are some of the marine aluminum?
1. It can reduce ship weight, increase speed, reduce fuel consumption, can improve the ship length width ratio, increase stability;
2. Good corrosion resistance, can increase the service life of the ship;
3. It has good formability, easy cutting, stamping, cold bending, forming and cutting and so on. It is suitable for streamline of hull;
4. The welding performance is good, the elastic modulus is small, the ability to absorb impact stress is large, and it has greater security;
5. Materials are easy to obtain and recyclable;
6. Good low temperature performance, suitable for low temperature equipment.
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| Common types and applications of marine grade aluminum plate |
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Posted by: haomeialu - 02-05-2018, 07:04 AM - Forum: Knowledge & Technique
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Common types and applications of marine aluminum plate
There are several types and uses of marine grade aluminium sheet. Here are some of the main marine aluminium sheet. 7075 marine grade aluminum plate, Its good corrosion resistance and oxidation resistance, it also has good, easy to process and wear resistance, and availability is also good. At 150 degrees below, there is a high strength, and has a particularly good low temperature strength, poor welding performance, stress corrosion cracking tendency, two stage aging can improve the performance of SCC.
6061 marine grade aluminum plate has excellent processability, excellent welding characteristics and electroplating, good corrosion resistance, toughness, easy polishing, color film, excellent oxidation effect. The main alloying element in 5083 marine grade aluminum plate alloy is magnesium, which has good corrosion resistance and weldability, and medium strength. Good resistance to corrosion of the 5083 alloy is widely used in marine applications such as ships, aircraft and automotive, welding parts, light rail, pressure vessels need strict fire (such as liquid tankers, refrigerated trucks, refrigerated containers), refrigeration equipment, television tower, drilling equipment, transportation equipment etc. In non heat treatable alloys, good strength, corrosion resistance, good machinability. After anodizing, the surface is beautiful. It can be machined into optical mechanical components. Marine parts and wire clips.
In addition, there are 2024 marine grade aluminum plate and 1060 marine grade aluminum plate and so on many kinds of marine aluminum plate.
Marine aluminum plate is the emerging market for R & D applications of aluminum products. Shipboard production capacity has also become an important indicator of the comprehensive strength of various aluminum processing enterprises. With the upgrading of domestic aluminum production process, leading enterprises in Henan Province - Haomei Aluminum Plate production scale gradually expanded, increasingly rich types of alloys, product performance has reached the international advanced level.
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| The performances and applications of aluminum oxide sheet |
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Posted by: aluhm - 02-05-2018, 06:14 AM - Forum: Knowledge & Technique
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The aluminum oxide sheet technology electrolysis acid electrolyte through electric current, and the anode surface form a layer of thick and dense alumina protective film, moreover, this alumina protective film is not an additional layer and it will not peel off.
Performances:
The alumina oxide sheet with standard thickness oxide film (3um) can be used indoors for long-term without discoloration, non-corrosive, non-oxidizing and non-rusting, and the anodized aluminum sheet with a thick oxide film (10um) can be used outdoors without discoloration, even long-term exposure to the sunlight.
A strong sense of metal:
The aluminum sheet has a high hardness after anodic treatment, it also owns a good scratch resistance, no paint on the surface, with a slightly metal luster.
A high fire resistance and a strong pollution resistance:
Aluminum oxide sheet surface has no paint and any chemical substances, does not burn even at a high temperature of 600 degrees, does not produce any toxic gases, and it in line with the fire environmental requirements. Aluminum oxide sheet is also easy to clean, no fingerprints and no corrosive spots.
A good working quality:
Aluminum oxide sheet has a strong decorative performance, with a moderate hardness, aluminum oxide sheet is easy to bending and forming, and easy to direct processing into products, no need the complex surface treatment, it greatly reduced the production cycle and reduce product cost.
Applications:
Aluminum oxide sheet has a wide range of application in ceiling, curtain wall, aluminum panels, fire board, aluminum honeycomb sheet, electrical panels, cabinet panel, furniture panel, etc.
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| The difference between 6060 aluminum sheet and 6063 aluminum sheet |
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Posted by: aluhm - 02-05-2018, 06:10 AM - Forum: Knowledge & Technique
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6060 aluminum sheet and 6063 aluminum sheet has the similar chemical composition and processing performance, but actually they are totally different, and the strength is the biggest difference. On the whole, the 6060 aluminum sheet has a wide range of application in windows and doors, and 6063 aluminum sheet can be used in aviation industry.
The features and applications of 6060 aluminum sheet
6060 aluminum sheet has a high strength, a good mechanical property, a good wearing resistance and a good corrosion resistance, 6060 aluminum sheet is easy to processing and able to strengthened by heat treatment.
6060 aluminum sheet has a wide range of application in trucks, tower buildings, ships, pipelines and other architecture parts that has the requirements in strength, corrosion resistance and welding capacity. Such as the aircraft parts, camera lens, hardware, brake piston, hydraulic piston, electrical accessories, valves, etc.
The features and applications of 6063 aluminum sheet
6063 aluminum sheet has a wide range of application in our life, especially widely used in the construction industry. The magnesium is the main alloy element of 6063 aluminum sheet, and 6063 aluminum sheet owns a good corrosion resistance, a good welding capacity, an excellent processability and a good anodizing effect.
6063 aluminum sheet is easy to polishing, with a good plasticity, a moderate strength after heat treatment and a beautiful luster. 6063 aluminum sheet has a wide range of building profiles, irrigation pipe, furniture, lifts, etc.
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