A kind of welding method of carbon steel and stainless steel clad plate

A welding method and composite plate technology, applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., can solve problems such as mixing, increase effective thickness, eliminate metal mixing and gaps, and ensure corrosion resistance Effect

Active Publication Date: 2015-11-18
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of this invention is to provide a kind of welding method that the cladding is stainless steel and the base is the bimetallic clad plate of carbon steel, can effectively solve the problem of stainless steel and carbon in the weld seam of the bimetal clad plate of stainless steel cladding and carbon steel base. The problem of steel mixing, overcome the defects in the prior art

Method used

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  • A kind of welding method of carbon steel and stainless steel clad plate
  • A kind of welding method of carbon steel and stainless steel clad plate
  • A kind of welding method of carbon steel and stainless steel clad plate

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Embodiment Construction

[0022] Such as figure 1 As shown, taking the rolled composite plate as an example, the base plate 1 is carbon steel with a thickness of 20mm.

[0023] The clad plate 2 is made of stainless steel with a thickness of 10 mm, and the thickness of the clad plate is t=30 mm. The butt welding steps are:

[0024] 1. If figure 2 As shown, take the composite plates I and II of A and B, and machine the left and right bevels 4 and 4' in the shape of isosceles triangles at the ends of their butt welding edges. The left and right bevels have the same shape and size, and the bottom The sides are opposite, the lateral height a=kl=kπωμFr 1 / 90000V, where ω=600r / min, μ=0.3, F=10KN, r 1 =15mm, V=60mm / min, k is 1.05 according to field operation experience. Calculated a = 16.5mm, b = 3mm determined by field operation experience. After the processing is completed, clean the rust on the groove.

[0025] 2. Align the butt joint edges of A and B composite plates I and II made of grooves with t...

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Abstract

The invention discloses a method for welding carbon steel and stainless steel composite plates, and belongs to the field of technologies for welding bimetal composite plates. The method is characterized by comprising operation steps of (1), machining isosceles-triangular grooves in end surfaces of butt edges of composite plates A and B; (2), aligning to-be-welded edges of the composite plates A and B and filling welding wires in the grooves; (3); placing a stirring pin at an end of each butt edge seam, turning the stirring pin at a speed, applying pressure F to the composite plates by a shaft shoulder of the stirring pin, and enabling the turning stirring pin to move forwardly in the butt weld seam at a welding speed V to reach the other end of each weld seam. The lengths of the bottom edges of the isosceles-triangular grooves are 2b, the transverse heights a of the isosceles-triangular grooves are equal to a k, the k is a coefficient of a friction stir welding zone and can be a value larger than 1.0 and smaller than 1.1 according to field experience. The method has the advantage that the welding quality can be improved.

Description

Technical field: [0001] The invention belongs to the technical field of welding bimetallic composite plates, and in particular relates to a welding method for carbon steel and stainless steel composite plates. Background technique: [0002] The base layer is carbon steel and the cladding layer is stainless steel. As the raw material for bimetallic welded pipe forming, it can effectively solve the corrosion problem of pipelines in oil and gas transportation, oil refining, chemical industry and other industrial sectors, and has more and more applications. The literature "ButtjoiningofAl——Cubilayersheetthroughfrictionstirwelding" published in the 12th issue of the Chinese Journal of Nonferrous Metals (English version) in 2012 and the graduation thesis of Xi'an University of Architecture and Technology published in 2013 conducted research on the friction stir welding of bimetallic clad plates, but the involved They are all directly performing traditional friction stir welding wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/12
CPCB23K20/12B23K33/004B23K2101/185B23K2103/04
Inventor 黄庆学罗淦王效岗周存龙吴雨兰
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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