Manufacturing process of seamless steel tube top

Abstract

The invention discloses a manufacturing process of a seamless steel tube top. The seamless steel tube top is manufactured through the steps of wax mould manufacturing, mud mould manufacturing, air drying, roasting and casting, wherein when a mud mould is manufactured, silica sol, quartz sand and rice husks in a mass ratio of 100 to 100 to 50 are added to the mud mould. A ceramic mould obtained after roasting has high strength and good air permeability. The performances of the manufactured seamless steel tube top have superiority compared with the performances of the seamless steel tube tops manufactured by traditional methods. The manufacturing process has the advantages of simple steps, safety, practicability, and the like.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a manufacturing process of a seamless steel pipe plug. Background technique [0002] The seamless steel pipe plug is manufactured by investment casting, which is also called the lost wax method. The lost wax method is to use wax to make the mold of the object to be cast, and then apply mud on the wax mold. This is the clay mold. After the clay mold is air-dried, it is baked into a pottery mold. Once fired, the wax mold is completely melted and lost, leaving only the pottery mold. Generally, when the clay mold is made, a sprue is left, and then the molten metal liquid is poured into the sprue. After cooling, the required utensils are made; however, the pottery molds produced by traditional methods are prone to shortcomings such as insufficient strength and poor air permeability, and the oil injection ring at the production site is easily deformed and has poor performance. ...

AI Technical Summary

Problems solved by technology

[0002] The seamless steel pipe plug is manufactured by investment casting, which is also called the lost wax method. The lost wax method is to use wax to make the mold of the object to be cast, and then apply mud on the wax mold. This is the clay mold. After the clay mold is air-dried, it is baked into a pottery mold. Once fired, the wax mold is completely melted and lost, leaving only the pottery mold. Generally, when the clay mold is made, a sprue is left, and then the molten metal liquid is poured into the sprue. After cooling, the required utensils are made; however, the pottery molds produced by traditional methods are prone to shortcomings such as insufficient strength and poor air permeability, and the oil injection ring at the production site is easily deformed and has poor performance