Manufacturing method of composite electromagnetic valve

Abstract

The invention discloses a manufacturing method of a composite electromagnetic valve. The manufacturing method includes the steps of: S1, placing 10-15 parts of polytetrafluoroethylene into a mould, and filling the polytetrafluoroethylene with 2-4 parts of Mg2SiO4, 0.5-0.7 part of nano-alumina, 0.01-0.02 part of zirconium nitride and 0.01-0.02 part of titanium dioxide to obtain filler for standby use; S2, putting a single valve made of a metal material into the mould, putting the filler obtained in S1 into the mould, closing the mould, then putting the mould into a high temperature furnace, raising the temperature to 500-550DEG C, then performing heat preservation for 45-55min, pressing the mould by a press machine, blowing cold nitrogen to the mould for 30-45min in the pressurization process, then opening the mould to obtain a semi-finished product of the valve; and S3. spraying 4-6 parts of chromium carbide to the valve surface by hypersonic flame spraying, thus obtaining a final product.

Description

technical field [0001] The invention relates to the field of valve manufacturing materials, in particular to a manufacturing method of a composite material electromagnetic valve. Background technique [0002] Solenoid valve is an industrial equipment controlled by electromagnetic. It is an automatic basic component used to control fluid. It belongs to actuator and is not limited to hydraulic and pneumatic. It is used to adjust the direction, flow, speed and other parameters of the medium in the industrial control system. Solenoid valves can cooperate with different circuits to achieve the expected control, and the control accuracy and flexibility can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, and speed regulating valves. [0003] Based on the precision and flexibility of the electromagnetic...

AI Technical Summary

Problems solved by technology

[0003] Based on the precision and flexibility of the electromagnetic valve, the sealing performance of the valve body of the electromagnetic valve is high. However, because the valve body often needs to transport corrosive liquids, the valve body is easy to corrode, and the sealing performance of the valve body after corrosion Greatly reduced, and easy to corrode to electromagnetic working parts

In view of this technical problem, the Chinese patent number is: CN201410724297.6, which discloses "a method for manufacturing a composite electromagnetic valve", but the technical solution obtains an electromagnetic valve body, which not only has poor physical and chemical strength, but also has poor corrosion resistance. It still does not meet the requirements, and there is no real-time and effective way to solve the problems of existing technologies.