Method of vacuum pouring screw rod castings by adopting epoxy resin

Abstract

The invention discloses a method of vacuum pouring screw rod castings by adopting epoxy resin. The method sequentially comprises the steps that vacuum drying treatment is conducted on the epoxy resin;auxiliary materials are added for two times, material mixing for two times and vacuum defoaming treatment for two times are conducted successively; pouring is conducted under a vacuum state; then solidifying for two times is conducted; and finally, demoulding cooling is conducted. The screw rod castings prepared by adopting the method are exclusively used for oilless compressors or oilless vacuumpumps and the like and pay attraction to the situation that under working conditions of 24-hour uninterrupted high-speed rotation, high temperature and oilless lubrication, and the screw rod castingsare high in thermal stability size performance, low in friction coefficient, long in service life, green and environmentally friendly and have no pollution to equipment and terminal products; in addition, due to the fact that the mass of the epoxy resin is about 20% of a metal material, the screw rod castings prepared by adopting the method are low in mass, and can greatly reduce energy consumption of the equipment and improve economic benefits of industrial production.

Description

technical field [0001] The invention relates to a method of pouring screw castings. Background technique [0002] The oil or no oil of the compressor and vacuum pump generally refers to the amount of oil in the gas discharged from the compressor. Generally, the oil content of the oil machine is relatively large, and the oil content of the oil-free machine is 0.01ppm. Oil-free machines are increasingly used in applications that require very high air quality, such as food, medicine and cotton spinning industries. [0003] The screw is the main rotating part of the compressor and vacuum pump. During high-speed operation, the material of the screw must have high strength, high temperature resistance, and high wear resistance. However, the traditional screw is generally made of metal, and the wear rate of the metal screw is large during use. Oil is required for lubrication. The oil-gas separation technology used in high-end fields cannot achieve 100% separation in the true sense...

AI Technical Summary

Problems solved by technology

[0003] The screw is the main rotating part of the compressor and vacuum pump. During high-speed operation, the material of the screw must have high strength, high temperature resistance, and high wear resistance. However, the traditional screw is generally made of metal, and the wear rate of the metal screw is large during use. Oil is required for lubrication. The oil-gas separation technology used in high-end fields cannot achieve 100% separation in the true sense, and some oil remains, which is easy to pollute the application end

[0004] Ordinary metal screws are used in oil-free compressors or oil-free vacuum pumps. Under oil-free lubrication conditions, very precise calculations are required, and the size is slightly deviated, which is easy to get stuck; water lubrication, the metal friction generates heat High, easy local temperature is too high, affecting the stability of the machine; the metal screw is heavy and works 24 hours a day, and the equipment consumes a lot of energy; the metal screw compressor is very noisy when it is working, and in the social environment that pays more and more attention to environmental protection , Reducing the working noise of the equipment can expand the application range of compressors and vacuum pumps, such as hospitals in the city center, R&D centers, office buildings, etc.