Overlap welding method using ultrathin aluminum-steel compound transition joint

A transition joint and lap welding technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as aluminum-steel interface peeling, reduce production costs, reduce spatter, and reduce post-weld cleaning workload Effect

Inactive Publication Date: 2017-03-22
LUOYANG SHUANGRUI METAL COMPOSITE MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned technical problems in the lap welding process of the ultra-thin aluminum-steel composite transition joint, due to the extremely thin thickness of the ultra-thin aluminum-steel compos

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  • Overlap welding method using ultrathin aluminum-steel compound transition joint
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  • Overlap welding method using ultrathin aluminum-steel compound transition joint

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[0032] Example 1:

[0033] An ultra-thin aluminum-steel composite transition joint manufactured by explosive welding with a 5mm-thick hull structural steel CCSB as the base layer, a 2mm-thick pure aluminum 1060 as an intermediate layer, and a 3mm-thick aluminum alloy 5083 as a composite layer. The size of the test plate for welding process test of the sawn ultra-thin aluminum-steel composite transition joint is (5+2+3)×20×400mm, and the quantity is 2 pieces. For the welding process test, a temperature measuring hole is drilled at the aluminum-steel interface of the aluminum-steel transition joint welding test plate, with a diameter of 3~4mm. Before welding, use stainless steel wire brush and acetone to clean the surface of the part to be welded and within 50mm on both sides to remove moisture, dust, oil, oxide film and other impurities and all attachments. In the welding process, the welding sequence of welding aluminum first and then steel welding is adopted. The aluminum allo...

Example Embodiment

[0039] Example 2

[0040] An ultra-thin aluminum-steel composite transition joint manufactured by explosive welding with a thickness of 5mm ship structure steel CCSB as a base layer, a 2mm thickness of titanium TA1 as an intermediate layer, and a 3mm thickness of aluminum alloy 5083 as a composite layer. CB / T3953-2002 "Technical Conditions for Welding of Aluminum-Ti-Steel Composite Transition Joints" requires that the size of the test plate used for the welding process test of the ultra-thin aluminum-steel composite transition joint is (5+2+5)×20×400mm, The quantity is 5 pieces. Before welding, use stainless steel steel wire brush and acetone to clean the surface of the part to be welded and within 50mm on both sides to remove impurities and all attachments such as moisture, dust, oil, oxide film. In the welding process, the welding sequence of welding aluminum first, then steel. The welding between the ultra-thin aluminum-steel composite transition joint and the connecting pla...

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Abstract

The invention relates to an overlap welding method using an ultrathin aluminum-steel compound transition joint. The method comprises the steps of: pre-welding treatment; and a method of welding aluminum first and then welding steel during welding. The patent provides the welding method of welding aluminum first and then welding steel. As the heat conductivity coefficient of aluminum is about 3 times that of iron. Heat dissipation of an aluminum-steel interface is facilitated if aluminum is welded first, and the peak temperature of the aluminum-steel interface in the welding process is reduced, so that continuous welding is guaranteed, and meanwhile, the aluminum-steel interface of the ultrathin aluminum-steel compound transition joint is not peeled off.

Description

technical field [0001] The invention relates to a welding method, in particular to a lap welding method utilizing an ultra-thin aluminum-steel composite transition joint. Background technique [0002] The functions provided by metal materials can be divided into structural, thermal expansion, thermomechanical stress control, magnetism, corrosion resistance, connection, etc., and the continuous development of joints of different metal materials is due to the relative development of two or more layers of metal materials. As far as joints are concerned, a metal material can only provide one chemical, physical and mechanical property, and the use of lightweight metal materials directly composited on strong metal materials can save considerable weight. In view of the above reasons, the development of high-speed ships requires aluminum-steel composite transition joints to connect aluminum superstructures and steel hulls. Due to the need for further lightweighting of high-speed hu...

Claims

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Application Information

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IPC IPC(8): B23K9/173
CPCB23K9/173
Inventor 王小华辛宝刘金涛张保奇庞磊任江毅
Owner LUOYANG SHUANGRUI METAL COMPOSITE MATERIAL
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