Novel valve body casting process

Abstract

The invention discloses a novel valve body casting process. The novel valve body casting process comprises a lower die sleeve and connecting blocks, wherein a sand core is arranged in the lower die sleeve, connecting seats are arranged on the left side and the right side of the lower mold sleeve, a lifting handles are connected to the outside of the connecting seats, connecting bolts are arrangedin the connecting blocks, the connecting blocks are located at the upper end of the lower die sleeve, connecting nuts are fixed to the left end of the connecting bolts, a connecting groove is formed in the upper end of the connecting block, a middle die sleeve is arranged above the connecting groove, an upper die sleeve is arranged above the middle die sleeve, and a mold cover is arranged above the mold main body. Compared with an existing common valve body casting process, the novel valve body casting process has the advantages that the operation process is more rapid and convenient, the structure is small, the manufacturing process is simple, excessive maintenance cost is not needed, the internal structure is complex and is formed by splicing a plurality of sand cores, the structure is not easy to deform in a high-temperature state, the internal size can be well controlled, and the size precision is relatively high.

Description

technical field [0001] The invention relates to the technical field of valve body casting, in particular to a novel valve body casting process. Background technique [0002] What is casting: pouring liquid metal into a mold cavity that is suitable for the shape of the part, and after it solidifies, the product of a part with a certain shape, size and surface quality is obtained, which is called casting. Casting has three major elements : Alloy, modeling and casting solidification, it can form various complex parts, and valve is one of them. The definition of "valve" is a device used to control the direction, pressure, and flow of fluid in a fluid system. A valve is a device that allows the medium (liquid, gas, powder) in the piping and equipment to flow or stop, and can control its flow. The material of the valve body of the device is selected according to different process media. The commonly used materials are: cast iron, cast steel, stainless steel, carbon steel, plastic...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of valve body casting process to solve the problem that the general nodular cast iron solidification method proposed in the above-mentioned background technology is mushy solidification, which cannot ensure that the structure of the casting is dense, and there are no defects such as shrinkage cavity and porosity inside, and Although the valve body has a square shape, its internal structure is complex, which is composed of multiple sand cores spliced ​​together. The internal structure is complex and easy to sinter.

The sand core hole is small, easy to deform in high temperature state, difficult to control the internal size, and cannot well meet people's use needs.

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