Repair Welding Process for Defects in Cladding of Stainless Steel Composite Plates

A composite plate and stainless steel technology, applied in the field of metal welding, can solve the problems of difficulty in quality control, and achieve the effect of ensuring the quality of cladding welding, avoiding cracks, and ensuring height

Inactive Publication Date: 2012-02-15
孙伟松 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the surfacing welding method belongs to the welding of dissimilar metals, and the quality control is difficult

Method used

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  • Repair Welding Process for Defects in Cladding of Stainless Steel Composite Plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Refer to attached figure 1 :

[0022] Stainless steel clad plate, the base material 1 is 16MnR, which meets the strength and rigidity requirements of the equipment, and the cladding material 2 is 0Cr13AI stainless steel, which meets the acid resistance requirements of the medium. During the manufacturing process, cracks appeared on the cladding side, so the method of overlay welding was used for repair welding. The specific steps are:

[0023] First remove the defective cladding material with a removal length of 100mm and a width of 30mm; then dig down the base material by 1mm and the width is less than the width of the cladding material 2, so that a step is formed between the base material 1 and the cladding material 2. The length is 3 mm to avoid cracks at the interface between the base material 1 and the cladding material 2. At the same time, the metal of the base weld 5 can be welded to be flush with the step to ensure the height of the base weld 5. At the same ti...

Embodiment 2

[0025] Stainless steel clad plate, the base material 1 is 16MnR, which meets the strength and rigidity requirements of the equipment, and the cladding material 2 is 0Cr13AI stainless steel, which meets the acid resistance requirements of the medium. During the manufacturing process, cracks appeared on the cladding side, so the method of overlay welding was used for repair welding. The specific steps are:

[0026]First remove the defective cladding material, the removal length is 150mm, and the width is 50mm; then the base material is dug down by 3mm, and the width is smaller than the filling width of the cladding material 2, so that a step is formed between the base material 1 and the cladding material 2. The length is 5mm to avoid cracks at the interface between the base material 1 and the cladding material 2. At the same time, the metal of the base weld 5 can be welded to be flush with the step to ensure the height of the base weld 5. At the same time, when welding the trans...

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Abstract

The invention relates to a cladding defect repair welding process of a stainless steel composite plate, which belongs to the technical field of metal welding, and specifically relates to a cladding defect repair welding process of a stainless steel clad plate aiming at the cladding defect of a stainless steel clad plate. It is characterized in that: remove the defective cladding material; remove the base material, so that a step is formed between the base material and the cladding material; the groove surface and the bottom of the weld are transitioned with rounded corners; the base welding is welded by electrode arc welding; Welding of the transition layer adopts short-arc operation; welding of cladding and cover surface adopts electrode arc welding. It overcomes the defects that cracks are easy to appear in surfacing welding, and the welding heat process has adverse effects on the performance of the heat-affected zone of the base metal. It can effectively avoid cracks at the interface between the base material and the cladding material, ensure the height of the base weld, and will not damage the cladding. It is beneficial to ensure the welding quality of cladding.

Description

technical field [0001] The invention relates to a cladding defect repair welding process of a stainless steel composite plate, which belongs to the technical field of metal welding, and specifically relates to a cladding defect repair welding process of a stainless steel clad plate aiming at the cladding defect of a stainless steel clad plate. Background technique [0002] Stainless steel clad plate is made of stainless steel and low carbon steel or low alloy steel by explosion rolling or explosion rolling. It not only has the strength, stiffness and toughness of the base material, but also has the corrosion resistance of the cladding material, and has the advantages of low price. It is widely used in petrochemical, nuclear power and other fields. During the manufacture or service of composite panels, defects such as cracks, lack of fusion, and slag inclusions often appear in cladding materials. At present, surfacing welding is the most important means to repair the defects ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04B23K9/235B23K9/095B23K9/23B23K37/00
Inventor 孙伟松高嵩宫艳斌蒋文春石风涛付海昌马斌冯晓亮
Owner 孙伟松
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