Semi-automatic backing welding method for consumable electrode of stainless steel gasket of aluminum alloy plate
A technology of aluminum alloy plate and welding method, which is applied in the direction of welding equipment, arc welding equipment, metal processing equipment, etc., can solve the problems of stainless steel liner breakdown or damage, unstable root welding quality, etc., and solve the problem of internal quality Instability problems, shortening the production cycle, and avoiding the effects of breakdown or damage
Inactive Publication Date: 2013-10-23
杭州杭氧低温液化设备有限公司
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Problems solved by technology
[0010] The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a stainless steel liner that can avoid breakdown or damage, effectively solve the problems of unstable internal quality of backing welding, improve the pass rate of one-time molding, and improve production efficiency. Reduce energy consumption, shorten the production cycle, and greatly reduce the production cost of the stainless steel liner semi-automatic welding method for aluminum alloy plates
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[0024] Industrial CO with serial drawing numbers such as RS803 designed by the Petrochemical Department of Hangyang Co., Ltd. 2 In the evaporator, the thickness of the cylinder and the head is 30-35mm, and the volume is small, and the internal space is narrow. In order to facilitate the welding of the cylinder, the two sides of the head and the cylinder are connected by a stainless steel gasket single-sided welding process. The application of the welding technology of the present invention can ensure the welding quality and greatly shorten the manufacturing cycle.
[0025] After many tests, the back stainless steel liner was peeled off, and no breakdown was found. The back of the weld is beautifully formed. After X-ray inspection, it was qualified once and there was no repair case.
[0026]
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Abstract
A semi-automatic backing welding method for a consumable electrode of a stainless steel gasket of an aluminum alloy plate comprises the following steps: obliquely arranging the aluminum alloy plate and the stainless steel gasket clung to the lower part of the aluminum alloy plate onto a plane at an angle of 10-30 degrees with the horizontal ground; in a welding process, enabling a welding gun to be vertical to the surface of the aluminum alloy plate, downwards and backwards leaning at an angle of 10-20 degrees, swinging a welding gun nozzle in a Z shape leftwards and rightwards on the two sides of a base material, welding from bottom up, reasonably controlling a welding stop point to act on the root parts of the base material on the two sides, and fully melting. When the method is applied to a process of welding and manufacturing a large and thick plate container, the characteristics of a semi-automatic welding process can be fully utilized and the heat input in the welding process does not need to be compensated by external heating, so that the energy consumption is reduced, the production cycle is shortened and the production cost is greatly lowered.
Description
Technical field [0001] The invention relates to a semi-automatic bottom welding method for stainless steel gaskets of aluminum alloy plates, belonging to the technical field of metal welding. Background technique [0002] 1. The characteristics of melting pole semi-automatic welding process. [0003] Molten electrode gas shielded welding technology (MIG) is widely used in the manufacture of aluminum alloy pressure vessels. It is a low-hydrogen welding method, and the hydrogen content of the weld metal is relatively low. Therefore, it is suitable for metal welding sensitive to cracks. Secondly, this welding method has deep penetration and strong penetrating power. For some joints, grooves can be omitted or less grooved. Compared with other methods, it has the following advantages: [0004] 1. Melting pole welding adopts spray transition, low welding heat input, high welding speed and small welding deformation, which reduces the workload of post-welding correction; [0005] 2. Good b...
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IPC IPC(8): B23K9/173B23K9/00
Inventor 马华锋何仙来黄敏伟
Owner 杭州杭氧低温液化设备有限公司
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