Welding method of stainless steel composite board

A welding method and composite plate technology, applied to welding equipment, arc welding equipment, workpiece edge parts, etc., can solve the problems of deteriorating joint quality and easy cracks, and achieve the effect of improving welding quality and preventing embrittlement or cracks

Active Publication Date: 2010-12-15
CHINA HUAYE GROUP
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Problems solved by technology

Easy to produce cracks, thus

Method used

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  • Welding method of stainless steel composite board
  • Welding method of stainless steel composite board
  • Welding method of stainless steel composite board

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Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described in detail in conjunction with the accompanying drawings.

[0019] In the present invention, a stainless steel clad steel plate with 0Cr18Ni9 stainless steel as the composite material and low carbon structural steel as the base material is taken as an example to illustrate the embodiments of the present invention. The composite layer of the stainless steel clad plate is 0Cr18Ni9 stainless steel with a thickness of 2mm; the base layer is low carbon alloy steel Q235 with a thickness of 20mm. The welding of this stainless steel clad plate adopts the following steps.

[0020] First, the welding end of the stainless steel clad plate is processed into an X-shaped bevel as shown in Figure 1 by plasma cutting, gas cutting and other mechanical processing methods. Wherein, the included angle between grooves is 65°±5°. The gap between the grooves of two relative stainless steel clad steel plates is 2±1mm, and the...

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Abstract

The invention provides a welding method of a stainless steel composite board, comprising the following steps of: (a) machining a groove: machining the welding end of the stainless steel composite board into an X-shaped groove, wherein an included angle of the X-shaped grooves is 65+/-5 degrees, a gap at the middle part of the groove is 2+/-1mm, and the root of the groove is 1-2mm distant from a composite interface; (b) welding a basement layer: dividing the basement layer into three layers: a base layer (1), a filling layer (2) and a covering layer (3), and welding the base layer (1), the filling layer (2) and the covering layer (3) in sequence; (c) welding a transition layer: carrying out straight welding by adopting a minor-diameter welding rod or a welding wire and adopting the small-scale reversed polarity; and (d) welding a multiple layer: welding by adopting small current, high welding speed and low heat input.

Description

technical field [0001] The invention relates to a welding method for stainless steel clad plates. Background technique [0002] The stainless steel clad plate is a bimetal clad steel plate made of carbon steel or alloy steel as the base layer and stainless steel as the cladding layer by rolling and other methods. Generally, the strength of the composite board is guaranteed by the base layer, and the corrosion resistance of the composite board is guaranteed by the cladding layer. 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. [0003] For stainless steel composite plate welding, the base layer and cladding layer should be welded separately. The transition layer shall be welded at the junction of the base layer and the cladding layer. Basic welding and multi-layer welding belong to th...

Claims

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Application Information

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IPC IPC(8): B23K9/00B23K9/235B23K33/00
Inventor 陈现民贾庆林
Owner CHINA HUAYE GROUP
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