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Defect repair welding process of stainless steel composite board coating

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

Inactive Publication Date: 2010-07-14
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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  • Defect repair welding process of stainless steel composite board coating
  • Defect repair welding process of stainless steel composite board coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Refer to attached figure 1 :

[0026] 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 0Cr13Al 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:

[0027] 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

[0029] 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 0Cr13Al 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:

[0030]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 defect repair welding process of a stainless steel composite board coating, belonging to the technical field of metal welding, and relating to a defect repair welding process of stainless steel composite board coating aiming at the defect of the stainless composite board coating. The process is characterized by comprising the following steps of: removing a coating material with defects; removing a base layer material to form a step between the base layer material and the coating material; transiting the surface of a groove and the bottom of a welding line with a circular angle; welding the base layer by a welding rod arc welding; welding a transition layer by short arc operation; and welding a coating cap by adopting welding rod arc welding. The invention overcomes the defects that crack is easy to occur in the bead weld, poor influence is generated to the performance of base metal thermal influence area in the thermal welding process, and the like, effectively prevents the interface of the base layer material and the coating material from generating crack, ensures the weld bead height of the base layer without damaging the coating, and is beneficial to guaranteeing the welding quality of the coating.

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 Applications(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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