Wear-resisting insulation thrust runner collar preparation technology

Abstract

The invention discloses a wear-resisting insulation thrust runner collar preparation technology. The wear-resisting insulation thrust runner collar preparation technology comprises the following steps of: immersing an aluminum plate in an electrolytic cell containing an electrolytic solution, wherein the aluminum plate serves as a positive electrode; a stainless steel plate serves as a negative electrode; and performing micro-arc oxidation under setting conditions so as to form an oxidation film on the surface of the aluminum plate, wherein the specific setting conditions are as follows: the voltage range is 520-530V, the electric current density is 16-18A / dm<2>, the temperature of the electrolytic solution is 24-26 DEG C, and the reaction time is 18-20 minutes; and the electrolytic solution comprises 22-24 g / L of sodium silicate, 4-5 g / L of borax and 1-2 g / L of magnesium glycerophosphate. According to the technical scheme of the wear-resisting insulation thrust runner collar preparation technology, a micro-arc oxidation technology is adopted for forming a compact oxidation film layer on the surface of the aluminum plate; and the oxidation film layer can ensure that when an insulation thrust runner collar is hot-pressed at high temperatures and high pressures, the high-frequency usage of the insulation thrust runner collar is realized, the insulation thrust runner collar does not swell and shrink, and the surface of the insulation thrust runner collar is flat and wear-resisting and does not hollow.

Description

technical field [0001] The invention relates to a preparation process of an insulating mirror plate, in particular to a preparation process of a wear-resistant insulating mirror plate based on micro-arc oxidation. Background technique [0002] When manufacturing the main substrate of the circuit board (PCB), it is necessary to use a voltage machine to laminate multiple layers of different materials. The working principle of this voltage machine is to heat the processed glue through copper foil (or aluminum foil) Adhesive resin material, and press the multi-layer material by applying a certain pressure for at least half an hour, so as to make the circuit board base material, and in the process of pressing with an electric machine, due to cost considerations, a single pressing operation often needs to be done at the same time. Pressing multiple pieces of circuit board substrates, and in order to prevent multiple pieces of circuit board substrates from being affected by each ot...

AI Technical Summary

Problems solved by technology

[0003] The biggest difference between the mirror plate and the ordinary insulating plate is that there is a dense oxide film on the surface, which has a great influence on the performance of the mirror plate. In the lamination process, the performance requirements of the mirror plate are very high. When the machine is in operation, it generates both high temperature heat (greater than 300°C) and strong pressure (greater than 50MPa), which requires the mirror plate to have excellent thermal pressure resistance, that is, the mirror plate needs to have a high limit resistance Temperature and ultimate pressure resistance, and, more importantly, the surface of the mirror plate must remain very flat and smooth after repeated hot pressing, with no depressions on the surface, no expansion and contraction, and currently in the existing process However, this requirement cannot be realized in the current technology. Generally, after the mirror plate of the prior art can be used for about 100 times at room temperature, the surface begins to be sunken, resulting in the failure of the mirror plate, and it can only be used for about 50 times at high temperature. expired

Another reason why the existing technology cannot meet this requirement is that the preparation technology of this oxide film is not yet mature.

Images