Insulating thrust runner production process based on impregnation process

Abstract

The invention discloses an insulating thrust runner production process based on an impregnation process. The production process includes the steps that S1, aluminum is melted in an inert gas atmosphere; S2, a stainless steel plate is immersed in the molten aluminum and then taken out and cooled; S3, first powder is added into the aluminum and heated to be molten, so that first molten mixed liquor is obtained; S4, the stainless steel plate is immersed in the first molten mixed liquor and then taken out and cooled; S5, second powder is added into the first molten mixed liquor and heated to be molten, so that second molten mixed liquor is obtained; and S6, the stainless steel plate is immersed in the second molten mixed liquor, taken out, cooled and subjected to acid pickling and passivation, so that an insulating thrust runner is obtained. The first powder comprises, by weight, 50 parts of zirconium and 2-4 parts of cobalt; the second powder comprises, by weight, 50 parts of calcium and 10-12 parts of magnesium. According to the scheme, the conventional impregnation process is improved so that the manufactured thrust runner can be used frequently under high-temperature and high-pressure-intensity conditions, the thrust runner does not expand or contract, and the surface is flat, resistant to abrasion and not concave.

Description

technical field [0001] The invention relates to a production process of an insulating plate, in particular to a production process of an insulating mirror plate based on an impregnation process. 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 other when they are p...

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 coating 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. During operation, both high temperature heat (greater than 300°C) and strong pressure (greater than 50MPa) are generated, which requires the mirror plate to have excellent thermal pressure resistance, that is, the mirror plate needs to have a very high limit temperature resistance And the ultimate pressure resistance, and, more importantly, the surface coating of the mirror plate must remain very smooth and smooth after repeated hot pressing, without depressions on the surface, and no expansion and contraction. This requirement cannot be realized in the process. Generally, the mirror plate of the prior art can be used for about 100 times at room temperature, and then the surface begins to be sunken, resulting in the failure of the mirror plate, and it can only be used about 50 times at high temperature. has expired

The main reason why the existing technology cannot meet this requirement is that the preparation technology of this coating is not yet mature.

Images