Processing techniques for aluminum and aluminum alloy materials include machining, welding and joining, stamping, and surface treatment of materials. Surface treatment includes surface oxidation treatment, surface dyeing and surface passivation;
Industrial pure aluminum has high plasticity, good electrical conductivity and thermal conductivity, and is a good conductive and heat conductive and riveted material. However, the mechanical properties of pure aluminum are low and it is not suitable for structural members. In aluminum alloys, the strength is increased by the strengthening of certain alloying elements and the grain refinement; if heat treatment and cold working are carried out, the mechanical strength of some aluminum alloys reaches the level of alloy steel, so the aluminum alloy is industrially Get positive and broad applications.
The machining of aluminum alloys includes turning, milling, drilling, boring, sawing, etc., among which cutting is the most widely used, and the machinability of aluminum alloy has many similarities with copper alloys. Because the strength and hardness of the aluminum alloy are relatively low, the plasticity is small, the tool wear is small, the thermal conductivity is extremely high, and the cutting temperature is low, so the cutting process of the aluminum alloy is good, belonging to an easy-to-machine material, and the cutting speed is high. Use high speed cutting. However, the melting point of the aluminum alloy is low, and the plasticity increases after the temperature rises. Under the action of high temperature and high pressure, the friction at the interface of the chip is very large, and it is easy to stick the knife; especially the aluminum alloy in the annealed state, it is difficult to obtain a low surface roughness.
Article: www.bombgroup17.com Aluminum alloy materials