Changan precision parts machining process: One is based on the need for the production of a material, such as a good start after some small parts production can go punch and then cut or gongs CNC processing. Glasses accessories precision parts machining in many auto parts production. And to do it a few container is opened and the material after punching to welding, machining and then be injection after sanding, and then click the assembly parts can be shipped. For small parts even surface after grinding out a lot of treatment, plating, or fuel injection. Machining and welding or hit the screw assembly for packaging and shipping.
　　Changan precision parts machining process route, often arranged with a heat treatment step. Arrange heat treatment step position is as follows: to improve the cutting properties of the metal, such as annealing, normalizing, quenching, the general arrangements before processing machinery spare parts were. In order to eliminate the internal stress, such as aging, quenching and tempering treatment, the general arrangements after roughing, finishing performed before. In order to improve the mechanical properties of parts, such as carburizing, quenching and tempering, the general arrangements after mechanical parts processing performed. As a larger deformation after heat treatment, must arrange the final processing step.
　　In order to ensure the accuracy of Changan precision parts processing, crude, refined processing machine parts preferably separately. Because crude processing machine parts, cutting a large amount of the work suffered cutting force, clamping force, more heat, and mechanical parts machined surface more significant hardening phenomenon within the workpiece there is a large internal stress, if crude, coarse mechanical parts processing carried out continuously, the precision of the parts after finishing because of stress redistribution and quickly lost. For some mechanical parts machining high precision parts. Before After roughing and finishing, but also arrange low-temperature annealing or aging treatment process to eliminate internal stress.