What is the processing technology of aluminum shell? I believe we do not know much about this, so the following Xiaobian explains to you:
1. Internal high pressure forming technology
The internal high pressure forming technology is a forming new technology that has only appeared in recent years and is currently a research front in the world. According to the structural characteristics of various connecting parts, they can be formed in one time by the internal high pressure forming method, or they can be first made of a common extrusion method, then they can be shaped by internal high pressure forming method, and fed by internal pressure and axial force. The tube blank is pressed into the mold cavity to form it.
Due to the excellent internal high-pressure forming performance and large freedom of design, an internal high-pressure forming part can replace the workpiece formed by welding several parts, thus avoiding the distortion and distortion caused by the welding, and having high dimensional accuracy and mechanical properties. Its main advantages are: reduced quality and material savings.
2, precision die casting technology
The joints of the aluminum alloy body frame structure are mostly formed by casting, and the casting methods used are mainly semi-solid die casting and other advanced high-precision die casting methods. Semi-solid die casting technology currently has two forming processes: a rheology process and a thixotropic process. The former is to send the liquid metal into a specially designed injection molding cylinder, which is sheared by a screw to cool it into a semi-solid slurry, and then die-cast. The latter is the solid metal pellets or chips sent into the spiral injection molding machine, after heating and under shear conditions to make the metal particles into a slurry after the injection molding.
At present, semi-solid metal castings for industrial applications at home and abroad mainly refer to thixotropic castings and are widely used in body frame structures. Thixotropic casting is a precision forming method. After forming, the workpiece has high strength and can realize one-time forming of complex shapes. It can be used to mass-produce a variety of parts without cutting or cutting, and reduce the number of parts.