Working life of copper sleeve mold: unreasonable struct […]
Working life of copper sleeve mold: unreasonable structure caused by heat treatment, excessive grain size, etc., leading to the decline of main properties such as mold toughness, hot and cold fatigue performance, anti-wear performance, etc., affecting the working life of the mold.
Manufacturing cost of copper sleeve mold: As the intermediate or final process of the mold manufacturing process, the cracking, deformation and poor performance caused by heat treatment will cause the mold to be scrapped in most cases, even if it can be used through repair. Increase working hours, extend delivery time, and increase mold manufacturing costs. It is the heat treatment technology that has a very close relationship with the quality of the mold, which makes these two technologies promote each other and improve together in the process of modernization. In recent years, the field of rapid development of international mold heat treatment technology is vacuum heat treatment technology, surface strengthening technology of copper sleeve molds and pre-hardening technology of mold materials.
The manufacturing precision of the copper sleeve mold: the uneven transformation of the microstructure, the incompleteness and the excessive residual stress caused by the heat treatment cause the deformation of the mold after heat treatment, assembly and mold use, thereby reducing the precision of the mold and even scrapping.
Mold strength: improper heat treatment process, heat treatment operation is not standardized or the state of heat treatment equipment is not perfect, resulting in the strength (hardness) of the treated mold can not meet the design requirements.