What kind of aluminum plate can be bent?
When processing or designing sheet metal parts, the aluminum plate can not be bent and the bending crack is often encountered.
Here are some bending aluminum sheet materials that can be used for sheet metal processing.
The bending of the aluminum plate mainly depends on the state of the material. The state is divided into full hard, semi-hard and soft state (usually the soft state is called O state).
The bending effect of all hard is basically not good (the aluminum plate status is h18, H19, h38, etc. are all hard;
Aluminum plates in semi-hard state can basically be bent (H24 is semi-hard);
The o-state bending is certainly no problem, but because it is too soft, it is basically less to use this state for bending.
When processing sheet metal parts, the use of pure aluminum materials is still rare. Basically all-alloy aluminum (because the hardness of pure aluminum is not very good).
Alloy aluminum is selected as sheet metal parts, and semi-hard parts such as 3003, 3005 and 5052 can be used as sheet metal bending parts.
If 6061, 2024 and 7075 are used, because the hardness is too high, especially in T6 state, they should not be bent unless they are heated and bent again.
The difference between good aluminum plate and poor aluminum plate is that there are differences in oxidation performance, tolerance, surface effect, crystal accuracy and uniform stability, but there is little difference in the bending effect.
Explanation of aluminum plate grade
1000 series representative
1050, 1060, 1070, 1000 series aluminum plate is also called pure aluminum plate.
Among all series, 1000 series belongs to the series with the most aluminum content.
The purity can reach more than 99.00%.
Because it does not contain other technical elements, the production process is relatively single and the price is relatively cheap.
It is the most commonly used series in conventional industry at present.
At present, most of the products in circulation in the market are 1050 and 1060 series.
The minimum aluminum content of the 1000 series aluminum plate is determined according to the last two Arabic numerals. For example, the last two Arabic numerals of the 1050 series are 50.
According to the international brand naming principle, the aluminum content must reach 99.5%, and the above is regarded as qualified products.
China’s aluminum alloy technical standard (GB / t3880-2006) also clearly stipulates that the aluminum content of 1050 must reach 99.5%.
Similarly, the aluminum content of 1060 series aluminum plates must reach more than 99.6%.
1000 series typical brand and application:
Pure aluminum plate 1060 is mainly used in occasions requiring high corrosion resistance and formability, but for parts with low strength, such as chemical equipment, marine equipment, railway oil tank car, conductor materials, instrument materials, welding rods, etc.
2000 series aluminum plate representative
2A16 (LY16), 2A06 (LY6) and 2000 series aluminum plates are characterized by high hardness, of which the original content of copper is the highest, about 3-5%.
2A12 aluminum alloy is a kind of high strength hard aluminum, which can be strengthened by heat treatment; 2A12 aluminum alloy has good spot weldability and tends to form intergranular cracks when gas welding and argon arc welding are used;
2A12 aluminum alloy has good machinability after cold work hardening.
The corrosion resistance is not high. Anodizing and painting methods or aluminum coating on the surface are often used to improve corrosion resistance.
2000 series aluminum plate belongs to aviation aluminum material, which is not often used in conventional industry at present.
At present, there are few manufacturers producing 2000 series aluminum plates in China.
The quality cannot be compared with that of foreign countries.
At present, imported aluminum plates are mainly provided by Korean and German manufacturers.
With the development of China’s aerospace industry, the production technology of 2000 series aluminum plate will be further improved.
3000 series aluminum plate representative
3000 series aluminum plates are mainly represented by 30033003 and 3A21. It can also be called antirust aluminum plate.
The production process of 3000 series aluminum plate in China is excellent. 3000 series aluminum plate is mainly composed of manganese.
The content is between 1.0-1.5. It is a series with good antirust function.
It is commonly used in humid environments such as air conditioner, refrigerator and underbody. The price is higher than 1000 series. It is a more commonly used alloy series.
3000 series typical grade and its application:
3003 aluminum is mainly used for processing parts requiring good molding performance, high corrosion resistance, or good weldability, or workpieces requiring higher strength than 1000 series alloy, such as tanks and tanks for transporting liquid, pressure tanks, storage devices, heat exchangers, chemical equipment, aircraft fuel tanks, oil duct, reflective plates, kitchen equipment, washing machine cylinder block, rivet, welding wire.
3004 aluminum requires higher parts than 3003 alloy, chemical product production and storage devices, sheet processing parts, building baffles, cable ducts, sewers and various lamp parts.
4000 series aluminum plate representative
The 4000 series aluminum plate represents the 4a014000 series aluminum plate, which belongs to the series with high silicon content.
Generally, the silicon content is between 45-6.0%.
It belongs to building materials, mechanical parts, forging materials and welding materials; Low melting point and good corrosion resistance.
Product features: heat resistance and wear resistance.
5000 series representative
The 5000 series represents 5052, 5005, 5083 and 5A05 series.
5000 series aluminum plate belongs to the commonly used alloy aluminum plate series.
The main element is magnesium, and the magnesium content is between 3-5%. It can also be called aluminum magnesium alloy.
The main features are low density, high tensile strength and high elongation.
Under the same area, the weight of aluminum-magnesium alloy is lower than that of other series, so it is often used in aviation, such as aircraft fuel tank.
It is also widely used in conventional industry. The processing technology is continuous casting and rolling, which belongs to the hot-rolled aluminum plate series, so it can do deep oxidation processing.
In China, the 5000 series aluminum plate is one of the more mature aluminum plate series.
5000 Series typical grade and its application:
5052 aluminum has good forming and processing performance, corrosion resistance, weldability, fatigue strength and medium static strength. It is used to manufacture aircraft fuel tank, oil pipe, sheet metal parts, instruments, street lamp supports, rivets, wires, etc.
6000 series representative
6061 mainly contains magnesium and silicon, so it integrates the advantages of 4000 series and 5000 series.
6061 is a cold-treated aluminum forging product, which is suitable for applications requiring high corrosion resistance and oxidation resistance.
Good usability, excellent interface characteristics, easy coating and good processability.
It can be used for low-pressure weapons and aircraft joints.
General features of 6061: excellent interface features, easy coating, high strength, good usability and corrosion resistance.
Typical uses of 6061 aluminum: aircraft parts, camera parts, couplers, ship accessories and hardware, electronic accessories and connectors, decorative or various hardware, hinge head, magnetic head, brake piston, hydraulic piston, electrical accessories, valves and valve parts.
7000 series representative
7075 mainly contains zinc. It also belongs to Aviation series. It is aluminum magnesium zinc copper alloy, heat treatable alloy, superhard aluminum alloy and has good wear resistance.
7075 aluminum plate is stress relieved and will not deform and warp after processing.
All super large and super thick 7075 aluminum plates are detected by ultrasonic, which can ensure that there are no sand holes and impurities.
7075 aluminum plate has high thermal conductivity, which can shorten the forming time and improve the work efficiency.
7075 is mainly characterized by hardness.
7075 is a high hardness and high strength aluminum alloy, which is commonly used in the manufacture of aircraft structure and futures.
It requires the manufacture of high stress structural parts and molds with high strength and strong magic corrosion resistance.
At present, it basically depends on imports, and China’s production technology needs to be improved.
The more commonly used 8011 belongs to other series.
In my memory, it is an aluminum plate whose main function is to make a bottle cap. It is also used in radiators. Most applications are aluminum foil, which is not commonly used.