Insulating rotating shaft manufacturing method
A manufacturing method and a technology for insulating shafts, which are applied in the manufacture of emergency protection devices, electrical components, circuits, etc., can solve the problems of peeling, collapse of the insulating layer, insufficient adhesion of the polyphenylene sulfide coating, etc., and achieve the enhanced adhesion. Effect
Inactive Publication Date: 2015-04-22
XIANGTAN ELECTRIC MFG CORP LTD
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Problems solved by technology
In the past, polyphenylene sulfide was sprayed on the surface of the metal shaft to meet this requirement, but the adhesion of the polyphenylene sulfide coating on the metal rod was not enough, and the insulating layer often cracked and peeled off from the metal shaft during machining. Multiple reworks and re-spraying of polyphenylene sulfide are required to obtain qualified insulating shafts
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[0017] The present invention will be further described below in conjunction with drawings and embodiments.
[0018] With reference to the accompanying drawings, a manufacturing method of an insulating rotating shaft, the manufacturing method comprises the following steps:
[0019] Step 1. Clean the surface of the metal shaft 2, and use an organic solvent to dissolve and remove the grease on the surface of the metal shaft 2;
[0020] Step 2, sandblasting the surface of the metal shaft 2 to make the surface of the metal shaft 2 rough;
[0021] Step 3, spraying an adhesive transition layer on the surface of the metal shaft 2, the adhesive is 850N-314 colorless water-based primer;
[0022] Step 4, using spraying equipment to spray polychlorotrifluoroethylene (PCTFE) insulating material on the surface of the metal shaft 2;
[0023] Step 5. Put the rotating shaft sprayed with insulating material into the oven, and the temperature is controlled between 80°C and 100°C until the solv...
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The invention relates to an insulating rotating shaft manufacturing method. The manufacturing method comprises the steps that 1, the surface of a metal rotating shaft is cleaned; 2, coarsen treatment is carried out on the surface of the metal rotating shaft; 3, an adhesive transition layer is sprayed on the surface of the metal rotating shaft; 4, spraying equipment is used for spraying insulating materials on the surface of the metal rotating shaft; 5, the rotating shaft sprayed with the insulating materials is placed into a drying oven, and the temperature of the drying oven is controlled to range from 80 DEG C to 100 DEG C until a solvent in an adhesive is completely evaporated; 6, the temperature of the drying oven is increased to range from 200 DEG C to 210 DEG C, so that the insulating layer is molten and evenly adheres to the surface of the metal rotating shaft. According to the insulating rotating shaft manufacturing method, the adhesive is sprayed on the surface of the processed metal rotating shaft at first, then the insulating materials are sprayed on the metal rotating shaft, and the metal rotating shaft is roasted at high temperature to enable the insulating materials and the adhesive to form a net structure to adhere to the surface of the metal rotating shaft, so that the adhesive force is significantly enhanced, and insulating layer breakage and peeling will not occur during machining.
Description
technical field [0001] The invention relates to the field of electric appliance manufacturing, in particular to a method for manufacturing an insulating rotating shaft. Background technique [0002] The closing of the circuit breaker contacts must be completed by the rotation of the rotating shaft, so the used rotating shaft must be a metal rod capable of transmitting high torque, and at the same time, insulation between the rotating shaft and the circuit breaker contacts is required. In the past, polyphenylene sulfide was sprayed on the surface of the metal shaft to meet this requirement, but the adhesion of the polyphenylene sulfide coating on the metal rod was not enough, and the insulating layer often cracked and peeled off from the metal shaft during machining. Multiple reworks and re-spraying of polyphenylene sulfide are required to obtain qualified insulating shafts. Contents of the invention [0003] The object of the present invention is to overcome the above def...
Claims
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IPC IPC(8): H01H69/00
CPCH01H69/00
Inventor 魏建勋毛峰牛学研熊刚秦丽伟
Owner XIANGTAN ELECTRIC MFG CORP LTD