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| 3 series aluminum alloy analysis |
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Posted by: mtaluminum - 03-26-2021, 06:54 AM - Forum: aluminium faq
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3 series aluminum alloy is also called aluminum-manganese alloy. The content of manganese is 1-1.5%. It is a widely used anti-rust aluminum alloy series. The strength of 3 series aluminum alloy is higher than that of pure aluminum alloy. , But it has good plasticity after cold working (under-cold rolling mill) and annealing process. Because of its good corrosion resistance and welding performance, it can be used in many industries, such as building decoration industry and electronic manufacturing industry. , Automobile manufacturing, etc.
The main brands commonly used in 3 series aluminum alloys are 3003 aluminum plate, 3004 aluminum plate, 3104 aluminum plate, 3005 aluminum plate, 3105 aluminum plate and so on. Among them, 3003 aluminum alloy is the most used. 3003 aluminum plate is easy to process and has good rust resistance. Color paint can be applied to the surface of the original aluminum to make various decorative curtain wall panels and aluminum ceiling gussets for indoor use. The roof color aluminum tile is made by bending by the tile press, which is light and durable, and has a service life better than that of steel.
The price of 3003 is cheaper than that of 5052 Aluminum Tread Plate, and the welding performance is also very good. Some truck fuel tank material manufacturers also use 3003 H14 aluminum plates to replace the pressure-bearing partitions in the 5052 fuel tanks, reducing costs without affecting the use. The strength of 3004 alloy is higher than that of 3003, and the forming performance is better. It can be used as the body of all-aluminum cans and as a device for chemical production and storage of liquids.
3104 alloy and 3004 alloy are very similar in composition, high in strength and easy to process. In the TV manufacturing industry, 3104-O state plates are often used to make TV LCD backplanes, punch convex hulls, add electronic components, and form dense oxidation after molding and oxidation. The film is not only resistant to corrosion and oxidation, but also has good insulation, which reduces the total weight of the finished product and ensures good heat dissipation performance. 3005 alloy is mostly used in relatively high-end color-coated aluminum coils, in the building materials industry, roof partitions, movable panel houses, etc., and can also be used to make air conditioners, refrigerators and other heat sinks, internal parts, etc. 3105 alloy can be mainly used to make punched parts such as bottle caps and caps.
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| Drying method of aluminum alloy surface treatment |
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Posted by: mtaluminum - 03-25-2021, 05:47 AM - Forum: aluminium faq
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Drying is an indispensable part in the surface treatment of aluminum alloys, and it needs to be dried after the processing is completed or after the graphics and text are transferred. Commonly used drying methods include natural drying and heated drying (that is, drying).
1. Natural drying Natural drying is suitable for workpieces with low requirements for aluminum natural color oxidation or dyed workpieces. This method does not require heating, so the drying rate is slow. Due to the high ambient temperature in the south, natural drying is also a way to save drying costs. When using natural drying, you must pay attention to the water quality when cleaning the surface-treated workpieces to prevent the workpieces from being imprinted after they are dried.
2. Drying Drying is the most commonly used drying method in aluminum alloy surface treatment. According to the different baking temperature, it can be divided into low-temperature drying, medium-temperature drying and high-temperature drying.
(1) Low-temperature drying Low-temperature drying refers to the drying method when the baking temperature is lower than 100°C. Low-temperature drying is mainly used for drying after aluminum alloy anodization. For ordinary sulfuric acid anodizing, the drying temperature should be controlled within 80°C. . The drying of the graphic anti-corrosion layer of aluminum alloy after anodic oxidation should also be controlled within 100℃.
(2) Medium-temperature drying Medium-temperature drying refers to a drying method with a temperature in the range of 100 to 150°C. This drying method is suitable for drying without anodization.
(3) High-temperature drying. Drying at a temperature above 150°C is a high-temperature drying. High-temperature drying is only used when electrophoretic coatings are used. The drying temperature is generally 180-200°C. See more https://www.aluminum-price.com/
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| Classification standards of aluminum plates |
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Posted by: mtaluminum - 03-25-2021, 05:45 AM - Forum: aluminium faq
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Common uses of aluminum panels include: lighting; solar reflectors; architectural decoration; interior decoration: ceilings, walls, etc.; furniture, cabinets; elevators; signs, nameplates, luggage; interior and exterior decoration of automobiles; interior decorations: such as photo frames, aluminum panels , Reliefs, etc.; household appliances: refrigerators, microwave ovens, audio equipment, etc.; aerospace and military aspects, such as China's large aircraft manufacturing, Shenzhou spacecraft series, satellites, etc.; mechanical parts processing; mold manufacturing; chemical, thermal insulation pipe coating;
Aluminum plates are usually divided into the following two categories: 1. According to thickness: (unit mm) thin plate (aluminum sheet) 0.15-2.0 conventional plate (aluminum sheet) 2.0-6.0 medium plate (aluminum plate) 6.0-25.0 thick plate (aluminum plate) 25-200 ultra-thick plate above 200 2. According to the alloy composition, it is divided into: high-purity aluminum plate (rolled from high-purity aluminum with a content of 99.9 or more) pure aluminum plate (composition is basically rolled from pure aluminum)
Alloy aluminum plate (composed of aluminum and auxiliary alloys, usually aluminum-copper, aluminum-manganese, aluminum-silicon, aluminum-magnesium, etc.), composite aluminum plate or welded plate (special-purpose aluminum plate material obtained by a variety of material composite methods) clad aluminum plate (The outer side of the aluminum plate is covered with a thin aluminum plate for special purposes) The grades of aluminum alloys are representative. The following will take the 7075 T651 aluminum plate grades as an example. The first 7 represents the aluminum and aluminum alloy group-aluminum-zinc-magnesium alloy.
Aluminum and aluminum alloy groups are divided into nine categories. Among them, aluminum and aluminum alloys of series 1, 3, 5, 6, and 7 are the main ones. Among them, series 1 and 3 are the most commonly used. Other series are less likely to be used in actual use. The first category: 1 series: industrial pure aluminum, the second category: 2 series: aluminum-copper series alloys, the third category: 3 series: aluminum-manganese series alloys, the fourth series: 4 series: aluminum-silicon series alloys, the fifth series: 5 series: Aluminum-magnesium-based alloys Category 6: 6-series: Aluminum-magnesium-silicon-based alloys Category 7: 7-series: aluminum-zinc-magnesium-copper alloys Category 8: 8-series: other alloys
Technical quality requirements of aluminum plates:
1. The most basic point is that the surface of the sheet must be clean, no cracks and other oxide impurities are allowed.
2. Due to the imperfection of the process, the surface of the plate is allowed to have defects such as depression, scratches or roll indentation, but the depth must not exceed the allowable negative deviation of the plate, and it must be re-made if the deviation exceeds the deviation value.
Third, the process package aluminum thick plate allows the peeling part of the coating layer and the air bubbles in the coating layer.
4. Under normal circumstances, the surface of the sheet is allowed to repair the defects within the thickness difference. Five, some other requirements are mainly drawn up with the demanding suppliers and suppliers, and then the process is changed.
view more https://www.aluminum-price.com/
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| Formation of protective film on the surface of alloy aluminum plate |
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Posted by: mtaluminum - 03-24-2021, 09:41 AM - Forum: aluminium faq
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With the development of modern industry, the application of light metal materials has become increasingly widespread. Aluminum and aluminum alloys have a series of advantages such as low density, strong electrical and thermal conductivity, excellent mechanical properties, and good workability. They have been widely used in various sectors of the national economy.
In the field of construction, for example, 98% of high-rise buildings in Japan use aluminum alloy as door, window and wall decoration. Compared with ordinary wooden doors and windows, steel doors and windows, aluminum alloy doors and windows have the characteristics of light weight, less materials, beautiful appearance, corrosion resistance, and convenient maintenance. Although the cost is 3 to 4 times higher than ordinary wooden doors and windows, the long-term maintenance cost is low, so It has broad prospects for development.
Oxygen can form an oxide film on the surface of aluminum and aluminum alloy in the atmosphere, but the film is thin, loose and porous, amorphous, uneven and discontinuous, and cannot be used as a reliable protective-decorative film. . At present, anodic oxidation or chemical oxidation is widely used in industry to form an oxide film on the surface of aluminum and aluminum alloy parts to achieve the purpose of protection and decoration.
The thickness of the oxide film obtained by chemical oxidation treatment is generally 0.3~4μm, and its softness, wear resistance and corrosion resistance are all lower than the anodic oxide film. The thickness of the oxide film obtained by anodizing treatment is generally 5-20μm, and the thickness of the hard anodizing film can reach 60-250μm. The film layer is firmly bonded to the base metal and has high corrosion resistance, wear resistance and hardness. The porous oxide film has strong adsorption capacity and is easy to be colored with organic dyes. At the same time, it also has the characteristics of good insulation performance, strong heat insulation and heat resistance.
To sum up, after aluminum and aluminum alloys are anodic oxidation treatment, the oxide film formed on the surface has good protection-decoration characteristics. Therefore, it is widely used in aviation, electrical appliances, electronics, machinery manufacturing and light industry.
This experiment is to prepare the protective film on the surface of aluminum alloy by anodic oxidation. Through this experiment, you can understand the basic principles and basic methods of aluminum and aluminum alloy surface treatment, and further understand the anode process in the electrolytic cell through aluminum anodizing.
https://www.aluminum-price.com/
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| Four precautions for aluminum coil storage |
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Posted by: mtaluminum - 03-24-2021, 09:39 AM - Forum: aluminium faq
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Mingtai Aluminum tells everyone that after purchasing aluminum coils, you must remember to place them. This is because the aluminum coils are easily oxidized if they are not placed in place. This will lose the meaning of our purchase of aluminum coils. Therefore, it is necessary for everyone to understand where the aluminum coil should be placed.
1. Wrap the aluminum coil with plastic film. If conditions permit, it is best to place it in a place with a desiccant, so that it can absorb the moisture in the air and avoid the problem of oxidation;
2. If the aluminum coil is placed in a wooden box, then we must ensure that the humidity of the wooden box is less than 18%, and the temperature of the aluminum coil cannot be higher than 45°C. Don't remember these two mistakes;
3. If you suddenly change from a low temperature area to a high temperature area during placement, then we should not open the package immediately, because oxidation is prone to occur in this way, we should wait until the aluminum coil is applied before unpacking, so that oxidation will not occur Case;
4. If there is rain or snow leaks in the warehouse, aluminum coils should not be placed, which can easily cause oxidation. This must be remembered.
https://www.aluminum-price.com/
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| Technical support |
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Posted by: khushisharma - 03-24-2021, 09:05 AM - Forum: aluminium faq
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| Formation of protective film on the surface of aluminum and aluminum alloy |
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Posted by: mtaluminum - 03-22-2021, 11:53 AM - Forum: aluminium faq
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With the development of modern industry, the application of light metal materials has become increasingly widespread. Aluminum and aluminum alloys have a series of advantages such as low density, strong electrical and thermal conductivity, excellent mechanical properties, and good workability. They have been widely used in various sectors of the national economy. In the field of construction, for example, 98% of high-rise buildings in Japan use aluminum alloy as door, window and wall decoration. Compared with ordinary wooden doors and windows, steel doors and windows, aluminum alloy doors and windows have the characteristics of light weight, less materials, beautiful appearance, corrosion resistance, and convenient maintenance. Although the cost is 3 to 4 times higher than ordinary wooden doors and windows, the long-term maintenance cost is low, so It has broad prospects for development.
In the atmosphere, the surface of aluminum and aluminum alloy interacts with oxygen to form an oxide film, but the film is thin (3×10-3 ~5×10-3μm), loose and porous, amorphous, uneven and discontinuous The film cannot be used as a reliable protective-decorative film. At present, anodic oxidation or chemical oxidation is widely used in industry to form an oxide film on the surface of aluminum and aluminum alloy parts to achieve the purpose of protection and decoration.
https://www.aluminum-price.com/
The thickness of the oxide film obtained by chemical oxidation treatment is generally 0.3~4μm, and its softness, wear resistance and corrosion resistance are all lower than the anodic oxide film. The thickness of the oxide film obtained by anodizing treatment is generally 5-20μm, and the thickness of the hard anodizing film can reach 60-250μm. The film layer is firmly bonded to the base metal and has high corrosion resistance, wear resistance and hardness. The porous oxide film has strong adsorption capacity and is easy to be colored with organic dyes. At the same time, it also has the characteristics of good insulation performance, strong heat insulation and heat resistance.
In summary, the oxide film formed on the surface of aluminum and aluminum alloys after anodizing has good protection-decoration properties. Therefore, it is widely used in aviation, electrical appliances, electronics, machinery manufacturing and light industry.
This experiment is to prepare the protective film on the surface of aluminum alloy by anodic oxidation. Through this experiment, you can understand the basic principles and basic methods of aluminum and aluminum alloy surface treatment, and further understand the anode process in the electrolytic cell through aluminum anodizing.
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| The difference between 6061 aluminum alloy t6 and t651 |
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Posted by: mtaluminum - 03-22-2021, 11:49 AM - Forum: aluminium faq
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The main alloying elements in 6061 aluminum alloy are magnesium and silicon, which have medium strength, good corrosion resistance, weldability, and good oxidation effect. It is widely used in various industrial structural parts that require a certain strength and high antimicrobial corrosion. Its main chemical components are: Cu0.15-0.4-, Si0.4-0.8, Fe0.7-, Mn0.15-, Mg0.8-1.2-, Zn0.25-, Cr0.04-0.35-, Ti0. The difference between the state of 15-, 6061 aluminum plate T6 and T651 is that under normal circumstances, the internal stress of T6 will be relatively large, and the processing will be deformed. The most suitable state for processing should be T651. It is stretched on the basis of T6 to eliminate Internal stress.
The difference between the state T6 and T651 of 6061 aluminum plate is that under normal circumstances, the internal stress of T6 will be relatively large, and the processing will be deformed. The most suitable state for processing should be T651. It is stretched on the basis of T6 to eliminate internal stress 6061 The main alloying elements of aluminum alloy are magnesium and silicon, and form Mg2Si phase. If it contains a certain amount of manganese and chromium, it can neutralize the bad effects of iron; sometimes a small amount of copper or zinc is added to improve the strength of the alloy, and Does not significantly reduce its corrosion resistance; there is a small amount of copper in the conductive material to offset the adverse effects of titanium and iron on the conductivity; zirconium or titanium can refine the grain and control the recrystallization structure; in order to improve the machinability Performance, lead and bismuth can be added. Mg2Si is dissolved in aluminum to make the alloy have artificial age hardening function. The main alloying elements in 6061 aluminum alloy are magnesium and silicon, which have medium strength, good corrosion resistance and weldability , The oxidation effect is better.
6061t6 is a commonly used aluminum alloy state. Generally, unless otherwise specified, it is generally 6061t6 state, while 6061t651 is the best feature of 6 series aluminum alloys. It is a fighter in 6000 series aluminum alloys. It has excellent processing performance. Excellent welding characteristics and electroplating, good corrosion resistance, high toughness and no deformation after processing, compact material without defects and easy polishing, easy color film, excellent oxidation effect and other excellent characteristics.
https://www.aluminum-price.com/6061-alum...turer.html
6061-T651 is the main alloy of 6061 aluminum alloy. It is a high-quality aluminum alloy product produced by heat treatment and pre-stretching process. Although its strength cannot be compared with the 2XXX series or 7XXX series, its magnesium and silicon alloys have many characteristics. Representative uses of T651 include aerospace fixtures, electrical fixtures, and communications. It is also widely used in automated mechanical parts, precision machining, mold manufacturing, electronics and precision instruments, SMT, PC board solder carriers, and so on.
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