Method for welding two-layered stainless steel heat preservation inner bladder

A welding method and stainless steel technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of difficult welding process, high workpiece defect rate, difficult cleaning, etc., to ensure the quality of weld seam and welding, low cost, The effect of simple and easy process

Inactive Publication Date: 2009-05-27
卢晨熙
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Two parts have to be made into 90 ° seam welding, also have to be made into 180 ° of welding, no matter be 90 ° of welding or 180 ° of welding, welding torch 5 all applies welding outside cylinder, as figure 1 , figure 2 As shown, if it is made into 90° welding, it is easy to weld, but it is difficult to clean the 90° dead angle in the cylinder; if it is made into 180° welding, it is easy to clean but difficult to weld. At present, high-end products require 180° welding
As we all know, welding will generate high temperature, high temperature will make the stainless steel workpiece with poor heat transfer protrude and deform, and the joints of the inner wall of the cylinder will have pits and unevenness, which makes the welding process difficult and the defective rate of the workpiece is high

Method used

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  • Method for welding two-layered stainless steel heat preservation inner bladder
  • Method for welding two-layered stainless steel heat preservation inner bladder
  • Method for welding two-layered stainless steel heat preservation inner bladder

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Embodiment Construction

[0017] Hereinafter, an embodiment of the inner container of the welded stainless steel heat preservation pot of the present invention will be described in detail with reference to the drawings.

[0018] When welding the inner pot of stainless steel pot, follow the steps below:

[0019] The interface between the stainless steel tube 4 and the bottom 2 of the tube is degreased with acetone;

[0020] The bladder 4 and the bladder bottom 2 are put into the rotatable master mold 1 made of copper or aluminum material, so that the outer wall of the butted bladder and the bladder bottom are closely attached to the inner wall of the master mold. Because stainless steel has a great affinity for oxygen, if argon-filled protection is not used, the weld metal is prone to oxidation during the welding process, resulting in welding defects. Tungsten argon arc welding is a high-quality precision welding technology and an ideal welding method for welding thin-walled stainless steel. Therefore, when...

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Abstract

A method for welding the internal container of a dual-layer insulating canteen made of stainless steel includes such steps as degrasing the position to be welded, putting the workpiece in a rotary profile mould, fixing, inserting an argon-arc welding torch in the workpiece, fixing, driving the profile mould to rotate, starting electric arc, and welding by more than a turn.

Description

Technical field [0001] The present invention relates to metal welding technology, in particular to the welding of double-layer stainless steel heat-insulating cylinders, such as heat-insulating coffee pots, thermos cups, thermos bottles and other thin-walled stainless steel inner tanks. Background technique [0002] The traditional welding of thin-walled stainless steel cylindrical objects, such as the inner container of a double-layer vacuum stainless steel heat-preserving pot, is mostly welded by two parts of a stretched container and a bottom of the container. The two parts are made of 90° seam welding, and some are made of 180° welding. Whether it is 90° welding or 180° welding, the welding gun 5 is welded outside the barrel, such as figure 1 , figure 2 It is shown that it is easy to make 90° welding, but it is difficult to clean the 90° dead angle in the barrel; make 180° welding, it is easy to clean but the welding is very difficult. At present, high-end products require ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/02B23K9/12B23K9/16B23K9/32B23K101/12
Inventor 卢晨熙
Owner 卢晨熙
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