Welding method for stainless steel clad plates

A welding method and composite plate technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of weak welding at the joint, cracks at the joint, and affecting the quality of the joint, so as to achieve good economic benefits and prevent brittleness. The effects of softening or producing cracks and improving quality

Active Publication Date: 2014-04-30
SHANGHAI ZHENHUA HEAVY IND GRP NANTONG TRANSMISSION MACHINERY +1
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Problems solved by technology

When welding the transition layer, due to the different materials of the carbon steel layer and the stainless steel layer, especially the stainless steel clad plate with 316L stainless steel plate as the clad layer, the joint is prone to cracks or even breaks, so that the welding at the joint is not firm and affects Joint quality

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  • Welding method for stainless steel clad plates

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Embodiment Construction

[0020] Such as figure 1 As shown, the stainless steel clad plate is divided into base layer A and clad layer B. First, the welding end face of the stainless steel clad plate is processed into a V-shaped groove shape, and the base layer A is welded by manual gas shielded welding. In the present invention, the welding seam of the base layer A is divided into a base layer 1 and a filling layer 2, and the welding is performed in the order of the base layer 1 and the filling layer 2. Adopt the 136 welding method, adjust the welding process specification parameters in place, use TWE-711Ni welding material, diameter φ1.4㎜ welding wire, DCEP polarity, adjust the current to 280~350A, voltage 32~35V, wire feeder speed is 25~35cm / min, gas flow rate 18~25L / min, start welding, in order to make the weld beautiful and full, the thickness of the weld seam base layer 1 is 0~2mm higher than the base layer A, after the welding is completed, remove the weld scar burr, the back Clean the root of...

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Abstract

The invention relates to a welding method for stainless steel clad plates, in particular to a welding method for the stainless steel clad plates with 316L stainless steel as clad layers. Butt welding of two stainless steel clad plates made of the same materials is finished through three stages and five-layer weld joints. The three stages include welding of carbon steel layers, welding of joints between the carbon steel layers and stainless steel layers and welding of the stainless steel layers. The five weld joints are gradually welded by different welding materials specific to different base materials according to a mutual fusion relation among the welding materials, and finally, welded plates are combined into a whole.

Description

technical field [0001] The invention relates to a welding method of stainless steel clad plates, in particular to a butt joint method of stainless steel clad plates with 316L stainless steel as the clad layer. Background technique [0002] The stainless steel clad plate is a metal clad plate made of carbon steel or alloy steel as the base layer, stainless steel as the cladding layer, and explosive welding. Generally, the strength of the composite panel is guaranteed by the carbon steel layer (base layer), and the corrosion resistance of the composite panel is guaranteed by the stainless steel layer (multilayer). It not only has the excellent properties of stainless steel, such as beauty and durability, good formability, and strong corrosion resistance, but also has the advantages of high strength and low cost of carbon steel, so it is widely used in actual production. [0003] For the welding of stainless steel clad plates, the carbon steel layer and the stainless steel lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/23B23K9/235
CPCB23K9/16B23K9/23B23K9/235B23K31/125B23K33/004B23K35/3073B23K35/308B23K2101/185
Inventor 张建勇程大地鲁兆平
Owner SHANGHAI ZHENHUA HEAVY IND GRP NANTONG TRANSMISSION MACHINERY
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