Method and device for welding stainless steel mirror surface liner of insulation container

Abstract

The invention discloses a method and device for welding a stainless steel mirror surface liner of an insulation container. The method is characterized in that the stainless steel liner is welded on a corner jointing part of two parts of a cylinder body and a cylinder bottom by using inert-gas-protected self-fusion welding, so that the periphery of the welding position is not oxidized due to the protection of inert gas, and the inert gas protection is realized in a manner that the surface of the self-fusion part is protected through introducing inert gas when the self-fusion welding is carried out by an inert gas protection welding device. The inert gas protection welding device comprises a base, a top plate, a top plate connector, a wedge-shaped block, a sealing rubber block, a base plate, an upper and a lower urethane locking plates, urethane, a venting screw, a cover plate, a sliding block and a sliding block spring. The invention has the advantages of changing the traditional stainless steel liner manufacture method, enabling the surface of the welding part of a product to be protected by the inert gas during annular welding of the stainless steel mirror liner, avoiding bad defects generated by the welding position, saving subsequent procedures of surface treatment, and ensuring that the product is more attractive and environment-friendly.

Description

technical field [0001] The invention relates to a process for manufacturing an inner liner of a thermal insulation container and equipment used in the process, in particular to a welding method for a stainless steel mirror inner liner of a thermal insulation container and the equipment used therein. Background technique [0002] Existing heat preservation containers related to stainless steel liners have the following several liner welding processes. 1) The stainless steel liner is divided into two parts, the body and the bottom. figure 1 As shown, there is no device for providing argon gas on the inner appearance surface, so the welding position on the inner surface will turn yellow and black. The subsequent process uses sandblasting and electrolysis to make a sand surface or Teflon plating to cover the defects left after welding. , Time-consuming, labor-intensive, affecting the environment and detrimental to human health, among which Teflon contains some trace chemical ele...

AI Technical Summary

Problems solved by technology

[0004] The stainless steel mirror liner of the present invention is made of stainless steel mirror, and the liner is divided into two parts, the barrel body and the bottom. The welding position uses inert gas shielded self-fluxing welding at the corner junction of the two parts of the cylinder body and the cylinder bottom, so that the surrounding area of ​​the welding position is not oxidized due to the protection of the inert gas. The inert gas protection is through the inert gas protection welding device Inert gas is introduced to protect the surface of the self-melting part during self-melting welding, which avoids the yellowing and blackening around the welding position. The self-melting part is protected by the inert gas so that the bright surface is the same color as the mirror stainless steel, which is almost invisible to the naked eye. The traces of stainless steel melting, which seems to be an integral body, solve the problem that stainless steel liner products have obvious surface defects on the inner surface through other metal processing processes, which need to be compensated by subsequent surface treatment

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