How to prevent corrosion of copper castings
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, will have several forms of corrosion, and the copper sleeve is also a metal product.
Naturally, it is impossible to prevent the problem of metal corrosion. When the environment and time of use are different, the phenomenon of corrosion is also significantly different. 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.
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 copper sleeve is a bearing. It belongs to the general category of sliding bearings. It is a bearing that works under sliding friction. The opposite shaft is rotating. Generally, it needs auxiliary lubrication system to work. The sliding bearing works smoothly, reliably and without noise. Under liquid lubrication conditions, the sliding surface is separated by the lubricating oil without direct contact, and the friction loss and surface wear can be greatly reduced. The oil film also has a certain vibration absorbing capability, which is lubrication, heat dissipation, friction reduction, and extended life.
