Method for nano vacuum coating of reflective cup

Abstract

The invention discloses a method for nano vacuum coating of a reflective cup. The method comprises the following steps: (1) pre-treatment: cleaning oil stains and a release agent on the surface of thereflective cup and activating the surface of the reflective cup; (2) drying and electrostatic dust collection: after drying the pre-treated reflective cup, ionizing gas by means of an static electricfield to absorb dust particles to an electrode in an electrified manner; (3) first time evaporation of silicone oil: fixing the reflective cup treated in the step (2) to a clamp and mounting the reflective cup in a vacuum chamber of an evaporative coating machine for plating silicone oil, wherein the thickness of the silicone oil is 2.5-3.0 [mu]m; (4) evaporation: coating the reflective cup plated with the silicone oil, wherein the thickness of the coating is 50-60 [mu]m; (5) second time evaporation of silicone oil: plating silicone oil to the evaporated reflective cup, wherein the thicknessof the silicone oil is 2.5-3.0 [mu]m; and (6) inspection and packaging: inspecting the reflective cup treated in the step (5) and packaging and putting qualified products in storage.

Description

technical field [0001] The invention relates to the technical field of vacuum coating, in particular to a method for nanometer vacuum coating of reflective cups. Background technique [0002] The optical surface of some optical parts needs to be plated with one or more layers of thin film by physical or chemical methods, so that the characteristics of reflected light or transmitted light of the light passing through the surface will change, and the surface of the tool used in many mechanical processing also needs to deposit 1 Layer dense, combined with a firm superhard coating to harden it, prolong its service life, improve cutting efficiency, thereby improving the precision and smoothness of the processed parts. At present, vacuum coating as a physical coating method, especially the nanoscale ultra-thin film production technology, has been widely used in high-tech fields such as electric vacuum, radio, optics, atomic energy, space technology, and information technology and ...

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation of the protective film of lamps and lanterns mostly adopts the artificial surface spraying organic layer as the protective film, because the process is not completed under vacuum conditions, so the surface of the aluminum film will be corroded, and the coating will also be polluted to varying degrees, reducing the overall The performance of the car lamp; more importantly, the sprayed organic coating has poor chemical stability. Under the environment of high temperature and ultraviolet light, its transmittance will be greatly reduced, thereby reducing the reflectivity of the reflector cup

In addition to the poor stability of the artificial spraying process, the reflectivity of the reflective cup prepared by this process is about 75%, which can no longer meet the requirements of the lamp for the reflective cup.

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