Combination of plastic and aluminum alloy
In product design, plastics are often used together with metals. In the use of matching parts, the use of aluminum alloys to jointly design products is widely used. On the one hand, it is to make the product design, the structural strength can make up for the lack of plastics, because In the selection of plastic materials, although some high-performance engineering plastics are higher than metals in terms of weight to strength ratio, considering cost factors, sometimes it is necessary to use metal manufacturing processes to reduce costs, and in the selection of metals, Aluminum is still the most widely used. It has many advantages such as light weight, easy processing and corrosion resistance. In the overall design part of the product, Yeh Her Yow Co. can do the overall planning, manufacturing and assembly for customers, helping customers save the need for multi-party order management. troubled.
Overview of aluminum alloy
Aluminum is the most abundant metal element in the earth's crust, but it is slower than other metals in the application of various materials. The reason is that the smelting chain technology is difficult. It was not until 1866 that the American Hull and the Frenchman Helott used the electrolytic reduction method to extract metal aluminum from bauxite. Since then, aluminum has been widely used in industry and life.
Aluminum alloy is a general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc, and manganese, and the secondary alloying elements are nickel, iron, titanium, chromium, lithium, etc. Aluminum alloy has low density, but relatively high strength, which is close to or exceeds high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel.
The general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc, and manganese, and the secondary alloying elements are nickel, iron, titanium, chromium, lithium, etc. Aluminum alloy has low density, but relatively high strength, which is close to or exceeds high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel.
Aluminum alloys are divided into two categories: cast aluminum alloys, which are used in the cast state; deformed aluminum alloys, which can withstand pressure processing and have higher mechanical properties than the cast state. It can be processed into aluminum alloy materials of various shapes and specifications. It is mainly used in the manufacture of aviation equipment, daily necessities, doors and windows for construction, etc.
Aluminum alloy can be divided into deformed aluminum alloy and cast aluminum alloy according to the processing method. Deformed aluminum alloys are divided into non-heat-treatable aluminum alloys and heat-treatable aluminum alloys. The non-heat-treatable type cannot improve the mechanical properties through heat treatment, but can only be strengthened through cold deformation. It mainly includes high-purity aluminum, industrial high-purity aluminum, industrial pure aluminum, and anti-rust aluminum. Heat-treatable and strengthened aluminum alloys can improve mechanical properties through heat treatment such as quenching and aging. It can be divided into duralumin, wrought aluminum, super duralumin and special aluminum alloys.
Aluminum alloys can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance. Cast aluminum alloys can be divided into aluminum-silicon alloys, aluminum-copper alloys, aluminum-magnesium alloys and aluminum-zinc alloys according to their chemical composition.
Aluminum alloy number
The aluminum alloy code is based on the AA standard of the American Aluminum Company, and uses four digits to represent various alloys. At present, the number of the American Aluminum Association
is commonly used.The numbering of aluminum alloys is mainly divided into eight series. International brand name (using four Arabic numerals, which is commonly used now):
- 1XXX means more than 99% pure aluminum series
- 2XXX means aluminum-copper alloy series
- 3XXX means aluminum-manganese alloy series
- 4XXX means aluminum-silicon alloy series
- 5XXX means aluminum-magnesium alloy series
- 6XXX means aluminum-magnesium-silicon alloy series
- 7XXX means aluminum-zinc alloy series
1000 series (more than 99.9% pure aluminum):
Contains 99% aluminum, has good corrosion resistance, heat transfer, and electrical conductivity, but has low mechanical strength and is easy to process. FE and SI are the main impurities. The appearance is very bright, and it is mainly used in household products, daily necessities and electrical appliances that do not require high strength. 1050 and 1100 have excellent processability, electrical conductivity, heat dissipation, weldability, and corrosion resistance, but their strength is poor. They can be used for shells and radiation materials: such as PC heat dissipation boards.
2000 series (AL-CU-MG/aluminum-copper-magnesium alloy):
After heat treatment, its performance can compete with mild steel, but because it contains more copper, its corrosion resistance is poor, and it must be treated in a corrosive environment. It is mainly used in Aviation and mechanical parts.
-2014 high alloy for long slide rails.
-2024 (super duralumin - easy to corrode, not weldable) for cross tubes
3000 series (AL-MN/aluminum-manganese alloy):
The main component of MN element is up to 1.5%, which does not reduce the processability and corrosion resistance of pure aluminum, and improves the strength. It is mainly used in daily necessities, building materials and utensils. 3003 is used for automotive refrigerant aluminum tubes, easy-open cans, heat exchangers, etc.
4000 series (AL-SI/aluminum-silicon alloy):
SI can lower the melting point of the alloy without causing embrittlement of the alloy, and can be used as welding materials such as electrode wires and bronze. But after anodizing, the color will appear gray. 4832 and 4032 are forgeable, heat treatable, low thermal expansion coefficient, high friction resistance, acceptable corrosion resistance, and can be used for high temperature parts and pistons.
5000 series (AL-MG/aluminum-magnesium alloy):
Most corrosion-resistant, medium-to-high-strength, work-hardenable, weldable, surface gloss, etc., ductile at low temperature, MG has a higher effect on material hardness than MN, and can be used in low-temperature containers. This alloy has excellent corrosion resistance to seawater and marine climates, and is mainly used for ships, vehicles, building materials and the easiest to weld. Since the alloys of this series are used for many years, the strength of cold working will be slightly reduced, and the elongation will be increased, so it needs to be stabilized.
-5N01 is a representative alloy with less MG addition, and is used for decorative materials and high-grade utensils.
-5005 is mostly suitable for vehicle ceilings, building materials and utensil materials.
-5051 for cable clamps. -5056 for optical lens.
-5083 contains a lot of MG. Although it is a non-heat-treatable alloy, it has high strength and good weldability. It is a good welded structural material and is mostly used in ships and vehicles.
6000 series (Al-Mg-Si/aluminum-magnesium-silicon alloy):
Excellent processability and corrosion resistance. It is one of the most commonly used materials for structural materials or forging materials. It is mainly used for aluminum doors and windows, aluminum extrusion products, etc.
-6061 medium-strength high alloy is lower than 2 and 7 series, used for forging, aerospace structure, automotive refrigerant hose.
-6063 is easy to weld, can be heat treated and has good processability.
-6082 is used for locomotive shock absorbers.
7000 series—–(AL-ZN-CU-MG/aluminum-zinc-copper-magnesium alloy):
The highest strength (aluminum-zinc-copper-magnesium) alloy, but it is prone to stress corrosion cracking, and can be sprayed with light oil during storage. Al-Zn-Mg alloys can be used as structural and welding materials.
-7050 and 7075 are also widely used in the aviation industry and high strength-to-weight ratio applications.
-7N01(7005) for bicycle rims.
-7050 is used for bicycle shock absorber tubes and front fork tubes, and its strength is higher than 7075.
-7075 for ski poles, bicycle gear wheels.
Wrought/forged aluminum alloy (WROUGHT ALLOYS)
Deformed/forged aluminum alloy (WROUGHT ALUMINUM) can withstand pressure processing, and its mechanical properties are higher than those of the cast state. It can be processed into aluminum alloy materials of various shapes and specifications. It is mainly used in the manufacture of aviation equipment, daily necessities, doors and windows for construction, etc. Deformed aluminum alloys are divided into non-heat-treatable aluminum alloys and heat-treatable aluminum alloys.
The non-heat treatment strengthening type cannot improve the mechanical properties through heat treatment, and can only be strengthened through cold working deformation. For example, pure aluminum ─ 1000 series, aluminum-manganese alloy ─ 3000 series, aluminum-silicon alloy ─ 4000 series, aluminum-magnesium alloy ─ 5000 series.
Heat treatable strengthened aluminum alloys can improve mechanical properties through heat treatment methods such as quenching and aging. Aluminum alloys can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance. For example, aluminum-copper-magnesium alloys ─ 2000 series, aluminum-magnesium-silicon alloys ─ 6000 series, aluminum-zinc-magnesium alloys ─ 7000 series
