Atmospheric plasma chemical processing method of WC and SiC optical molding molds

A plasma and chemical processing technology, applied in the direction of manufacturing tools, glass forming, glass pressing, etc., can solve the problems of reduced mold service life, sub-surface damage, low processing efficiency, etc., to reduce system costs, efficient removal, Effects of reduced precision and stiffness requirements
CN101659568AActive Publication Date: 2010-03-03HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2010-03-03

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Abstract

The invention relates to an atmospheric plasma chemical processing method of WC and SiC optical molding molds, which belongs to the atmospheric plasma chemical processing methods of the optical molding molds. The atmospheric plasma chemical processing method can solve the problems that the grinding and polishing technology which is used for processing after processing and forming of the optical molding molds made of SiC and WC materials has the disadvantages of low processing efficiency, poor surface quality, damage of a sub-surface layer and short service life of the molds. The method comprises the steps of: introducing a mixture of plasma gas, reaction gas and oxygen into space between a cathode and an anode of a plasma generator, imposing radio frequency power signals on the cathode andthe anode, producing the plasma discharge between the two electrodes, then placing the surface to be processed of the WC or SiC optical molding mold in a plasma jet region for carrying out chemical reaction and realizing the optical surface processing of the optical molding molds made of the SiC and WC materials. The method is used for carrying out the optical processing on the surfaces of the WCand SiC optical molding molds.
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Description

technical field

[0001] The invention relates to an atmospheric plasma chemical processing method for WC and SiC optical molding dies. Background technique

[0002] Compared with various plastic lenses, optical lenses made of glass materials are more and more widely used due to their optical properties such as high refractive index and low thermal expansion coefficient. It can be used to manufacture various lenses, prisms and filters used in military and civilian optical instruments; to manufacture optical fiber coupler lenses for optical communication; to manufacture light-gathering aspheric lenses for optical discs; to manufacture digital cameras, digital video cameras, Lenses for mobile phones, various aspheric surfaces for viewfinders, and even diffractive optical lenses. The annual global demand for this type of optical parts reaches hundreds of millions, which cannot be met by traditional grinding and polishing processes. Production and processing of large quantities o...

Claims

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