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Transformer tank and copper plate welding method

A transformer oil tank and welding method technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of difficult formation of molten pool, easy generation of pores, cracks, difficult operation, etc.

Inactive Publication Date: 2017-06-09
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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  • Claims
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Problems solved by technology

[0003] However, the welding between copper plates and copper plates and the welding of copper plates and boxes is a technical problem: First, in terms of the selection of welding methods, in structural parts manufacturing units, the commonly used welding methods include electrode arc welding, gas tungsten shielded welding, Metal gas shielded welding, among them, using electrode arc welding for copper plate welding will easily produce defects such as pores and cracks, the weld shape is poor, and the operation is difficult. Using tungsten shielded welding, because tungsten shielded welding is generally The current is low and the arc voltage is low, so it is difficult to form a molten pool for copper plate welding. In addition, the use of gas tungsten arc welding has low production efficiency for structural parts

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Embodiment Construction

[0024] The following describes the present invention in detail, and the features and advantages of the present invention will become more clear and definite along with these descriptions.

[0025] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "back", "left" and "right" etc. indicate directions or positions The relationship is an orientation or positional relationship based on the working state of the present invention, which is only for the convenience of describing the present invention and simplifying the descripti...

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Abstract

The invention provides a transformer tank and copper plate welding method. According to the method, mixed gas of argon and helium serves as protective gas, the copper plate and a steel fuel tank are welded by using gas metal arc welding, the copper plate or the steel fuel tank does not need to be preheated, and the welding operation can be conveniently performed. Moreover, the welding quality is high, and the product deformation is small.

Description

technical field [0001] The invention relates to a method for welding steel and copper, in particular to a method for welding a copper plate of a transformer oil tank. Background technique [0002] The transformer oil tank is a box-type structure, and the box body is composed of a box bottom, a box wall, and a box cover, such as figure 1 As shown, the material is generally carbon steel plate and low magnetic plate. During the operation of the transformer and the fuel tank, a magnetic field will be generated inside the fuel tank. For this reason, copper plates are generally installed on the tank wall and cover of the fuel tank to shield the magnetic field, such as figure 2 shown. [0003] However, the welding between copper plates and copper plates and the welding of copper plates and boxes is a technical problem: First, in terms of the selection of welding methods, in structural parts manufacturing units, the commonly used welding methods include electrode arc welding, gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K9/00B23K35/30B23K35/38B23K103/18
CPCB23K9/173B23K9/0043B23K35/302B23K35/383B23K2103/22
Inventor 王磊张桐彪杨明伟李洪利张克李学鸥
Owner HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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