Manufacturing method of upper sealing head of high-level liquid waste glass curing container

Abstract

The invention relates to a manufacturing method of an upper sealing head of a high-level liquid waste glass curing container. The method comprises the step 1 for forming a preset blank mold with a preset neck part, the step 1 comprises the following steps that S1, cold stamping is performed on a steel plate to form a first blank mold, the lower part of the first blank mold is a cylindrical part, and the upper part of the first blank mold is a protruding part; and S2, cold stamping is conducted on the protruding part of the first blank mold, so that the first blank mold forms the preset blank mold with a preset shoulder part and the preset neck part, the height of the preset neck part is larger than the height of the highest position of the protruding part, the height of the preset neck part ranges from 105 mm to 108 mm, and the outer diameter of the preset neck part ranges from 149.5 mm to 150.3 mm. According to the method, a larger volume participating in deformation can be provided for forming of the preset blank mold, so that when the preset neck part is formed through the protruding part, the metal drawing deformation amount is small, and the possibility of local tension fracture or wall thickness reduction out-of-tolerance can be reduced; and the thickness of the steel plate for forming is reduced, so that the thinner steel plate can be used for forming the upper sealing head.

Description

technical field [0001] The invention relates to the technical field of head molding, in particular to a method for manufacturing a head on a high-level waste liquid vitrified container. Background technique [0002] At present, my country has completed the construction of the first high-level waste liquid vitrification project disposal line. According to the requirements of this disposal line for the transfer, filling and storage of high-level waste liquid vitrification containers, the top sealing of high-level waste liquid vitrification containers The structural size, wall thickness, contour and other technical indicators of the head put forward very high requirements. It is difficult to meet the requirements according to the conventional manufacturing method, and the manufacturing is very difficult. The structure of the upper head is as follows: figure 1 As shown, it is a body of revolution, which includes a flange surface 14, a neck 13, a shoulder 12, and a bottom 11 from ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to: in the prior art, in the molding scheme of the upper head of the high-level waste liquid vitrified container, there is a process of extending the closed horizontal surface upward to form a preset blank mold with a preset neck, which is very easy to be caused by metal tension. The problem of local cracking or wall thickness thinning caused by large amount of elongation is to provide a method for manufacturing the upper head of the vitrified container of high-level radioactive waste liquid