Lower shell of electric valve and its mold and production process

Abstract

The invention relates to a lower shell of an electric valve, a mold thereof and a production process, comprising a main body and a copper sleeve, the copper sleeve is embedded on the main body and is integrated with the main body, and the outer circumferential direction of the copper sleeve is provided with continuous and discontinuous protrusions Since the connection between the body and the copper sleeve is provided with a connecting portion, the connecting portion is annular, the connecting portion is uniformly provided with trapezoidal grooves along the circumferential direction, and two adjacent trapezoidal grooves are provided with vent. The invention is the lower shell of the electric valve used in the high-end field, and is made by the aluminum-clad copper process. The copper-clad aluminum in the aluminum has stronger conductivity, which is beneficial to the transmission of electricity, has better conductivity, and effectively reduces environmental pollution and energy. The lower shell has an integrated casting structure that is more stable and reliable. The low-pressure process is used during casting. The produced lower shell has good internal compactness and can be heat treated to a certain extent, so better mechanical properties can be obtained.

Description

technical field [0001] The invention relates to the technical field of valve casting, in particular to a lower shell of an electric valve, a mold and a production process thereof. Background technique [0002] Traditional electric valve shells are generally made of separate materials and casted at high pressure. Especially in the field of nuclear power, electric valves have high requirements and require an integrated structure. Most of the electric valve shells in the prior art are cast with ferrous metal, which has high environmental pollution and high energy consumption, and In terms of product performance, iron has a large weight, is easily corroded, and has poor electrical conductivity. Traditional aluminum shells are generally cast with high pressure, and the products produced have poor internal compactness and cannot be heat treated, which leads to the mechanical properties of the product. Very poor, unable to meet the use requirements of nuclear power products, and ha...

AI Technical Summary

Problems solved by technology

[0002] Traditional electric valve casings are generally made of separate materials and cast under high pressure. Especially electric valves in the nuclear power field have high requirements and require an integrated structure. Most electric valve casings in the prior art are casted from ferrous metals, which cause high environmental pollution and high energy consumption. From the performance of the product, the weight of iron is heavy, it is easy to be corroded, and its electrical conductivity is poor. The traditional aluminum shell is generally cast by high pressure, and the internal compactness of the produced product is poor, and heat treatment cannot be performed, which leads to the mechanical properties of the product. Very poor, unable to meet the use requirements of nuclear power products, and the service life is short, at the same time, a single aluminum product cannot meet the corresponding electrical conductivity requirements

Images