Working life of large 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 large 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. Will increase working hours, extend delivery time, and increase the manufacturing cost of the mold. 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.I go this article written after my chat with bronzecast.net.

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.

Metals are subject to corrosion, which is what everyone knows. Affected by the environment, causing destructive damage through chemical or electrochemical reactions. It can be said that almost all metal products, in a certain environment, there will be some forms of corrosion, and the copper sleeve is also a metal product, naturally can not prevent the problem of metal corrosion, the environment and time of use is different, corrosion. There are also obvious differences in the phenomenon. There is also a certain relationship with the material. Iron is the most easily corroded one. The brass sleeve is slightly better. The tin bronze sleeve is the most resistant to corrosion and can work in acid and alkali environments.

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