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Basic procedures and steps of die polishing
发布时间:2022/2/26 10:09:42 | 信息来源:Dongguan citizen crown Hardware Co., Ltd.
Basic procedures and steps of die polishing
1. First of all, we must ensure that the tools are complete
Polishing tools and accessories such as oil stone, sand paper and diamond grinding paste should be prepared.
The general procedure of polishing is determined by processing sequence, such as CNC machining, electric spark milling machine, etc..
2. Influence of different hardness on polishing process
The hardness of the die casting die increases the difficulty of the grinding, but the roughness after the polishing decreases. Due to the increase of hardness, the polishing time required to achieve a lower roughness is increased accordingly. At the same time, the hardness is higher and the possibility of excessive polishing is reduced accordingly.
3. The influence of the surface condition of the die casting on the polishing process
The surface of mould steel will be damaged by heat, internal stress or other factors during the crushing process of cutting machine. Improper cutting parameters will affect the polishing effect. The surface after EDM is more difficult to grind than the surface after general machining or heat treatment. Therefore, precision EDM EDM should be used before the end of EDM, otherwise the surface will form hardened thin layer. If the electric spark finishing standard improper heat affected layer depth up to 0.4mm. The matrix hardness of hardened layer hardness is high, must be removed. Therefore, it is best to add a rough grinding process to thoroughly remove the damaged surface layer and form an average rough metal surface, providing a good foundation for polishing processing.
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