Surface treatment method of 3D hot-bending graphite mold

Abstract

The invention relates to a surface treatment method of a 3D hot-bending graphite mold, and belongs to the technical field of surface treatment of glass processing molds. In order to solve the problemof easy abrasion and short service life of an existing graphite mold, the invention provides the surface treatment method of the 3D hot-bending graphite mold. The method comprises the following steps:placing a to-be-treated 3D hot-bending graphite mould in a cavity of evaporation equipment, enabling the surface to be plated of the 3D hot-bending graphite mold to be arranged oppositely to a sputtering source, connecting an anode of a pulse power supply of the evaporation equipment with an electrode of the sputtering source, and connecting the cathode with a workpiece electrode of the 3D hot-bending graphite mold, wherein a silicon source is adopted as the target material of the sputtering source; and vacuumizing the cavity of the evaporation equipment, carrying out cleaning by an ion source, introducing argon gas and oxygen for a period of time, turning on a pulse power supply, and opening a silicon source to carry out vacuum coating, so that a coating layer is formed on the surface ofthe mold cavity of the graphite mold, and the corresponding coated 3D hot-bending graphite mold is obtained. Wear resistance and scratch resistance of the graphite mould can be improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to a surface treatment method for a 3D hot-bending graphite mold, and belongs to the technical field of surface treatment of glass processing molds. Background technique [0002] With the demand for thin, fashionable and practical 3C electronic products such as mobile phones, wearable products, and mobile electronics, more and more existing electronic product casings use glass materials, and mobile phones, wearable products, mobile electronics More and more products are using 3D curved glass screens or backplanes with complex shapes such as gradients, curved surfaces, and 3D special-shaped surfaces. [0003] The 2D curved or 3D curved glass used in mobile electronic devices is generally realized by the process technology of hot bending after glass is heated at high temperature, and has been widely used in the production of curved screens of various 3C electronic products. At the same time, due to the excellent high thermal conduc...

AI Technical Summary

Problems solved by technology

During processing, the glass is put into the cavity of the corresponding concave-convex mold for molding. However, since the mold is made of graphite material, the surface of the graphite mold is easily worn and oxidized during the production of curved glass by high-temperature heating. The production of carbon dioxide, carbon monoxide and carbon powder will cause the size of the mold to gradually decrease during continuous use, resulting in poor size curved glass, damage to the surface of the curved glass and damage to the mold, short service life and high production costs