Influence of heat treatment technology on mold
Mold heat treatment is an important process to ensure mold performance. It has a direct impact on the following properties of the mold.
Mold manufacturing accuracy: uneven and incomplete structural transformation and excessive residual stress caused by heat treatment cause the mold to deform during processing, assembly and use of the mold after heat treatment, thereby reducing the accuracy of the mold and even scrapping it.
Strength of the mold: The heat treatment process is not properly formulated, the heat treatment operation is not standardized, or the heat treatment equipment is in an incomplete state, which causes the strength (hardness) of the processed mold to meet the design requirements.
Working life of the mold: The irrational microstructure and excessive grain size caused by heat treatment, etc., lead to the decline of the main properties such as the toughness of the mold, the hot and cold fatigue performance, and the wear resistance, which affect the operating life of the mold.
Mold manufacturing cost: As an intermediate link or final process in the mold manufacturing process, cracks, deformation distortion and performance degradation caused by heat treatment will cause the mold to be scrapped in most cases. It can continue to be used even after repairing, and it will increase working hour, Extend the delivery time and increase the manufacturing cost of the mold.
Heat treatment technology is very closely related to the mold quality, so that these two technologies in the process of modernization ， promote each other and improve jointly. In recent years, the rapid development of international mold heat treatment technology is vacuum heat treatment technology, mold surface strengthening technology and mold material pre-hardening technology.