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Welding procedure of 0Cr11Ni2MoNbV thick plate material buried arc welding automatic arc welding

A technology of submerged arc automatic welding and welding process, applied in welding equipment, arc welding equipment, welding/welding/cutting items, etc., can solve the problems of no welding technology, no alloy welding technical data, etc. The effect of good protection and easy operation

Inactive Publication Date: 2009-04-22
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no technical information on the welding of this alloy, and there is no relevant information on its welding technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This embodiment provides a 0Cr11Ni2MoNbV thick plate material submerged arc welding automatic welding process, which is characterized in that: the 0Cr11Ni2MoNbV thick plate material submerged arc welding automatic welding process is specifically: the submerged arc automatic welding is a butt joint, and the test piece For thick plate parts, beveling, choose HJ260 stainless steel flux, Φ4.0 H0Cr20Ni10Ti welding wire, the welding assembly gap is 1.0mm, and a layer of 5mm flux is placed on the back of the weldment, in order to reduce or prevent the corner deformation of the weldment, Fix the weldment with a pressing block, add an arc striking plate and an arc closing plate, the welding current is 580A, the arc voltage is 32V, the dry elongation of the welding wire is 20mm, the front side is welded in 4 layers, the slag shell is removed between the layers, and the weld seam is ground with a grinding wheel to make it The metal luster is exposed to prevent slag inclusion. The w...

Embodiment 2

[0022] This embodiment provides a 0Cr11Ni2MoNbV thick plate material submerged arc welding automatic welding process, which is characterized in that: the 0Cr11Ni2MoNbV thick plate material submerged arc welding automatic welding process is specifically: the submerged arc automatic welding is a butt joint, and the test piece For thick plate parts, beveling, choose HJ260 stainless steel flux, Φ3.0 H0Cr20Ni10Ti welding wire, welding assembly gap is 0.1mm, a layer of 4mm thick flux is placed on the back of the weldment, in order to reduce or prevent the corner deformation of the weldment, Fix the weldment with a pressing block, add an arc striking plate and an arc closing plate, the welding current is 560A, the arc voltage is 30V, the dry elongation of the welding wire is 15mm, the front side is welded in 4 layers, the slag shell is removed between the layers, and the weld seam is ground with a grinding wheel to make it The metal luster is exposed to prevent slag inclusion. The wel...

Embodiment 3

[0029] This embodiment provides a 0Cr11Ni2MoNbV thick plate material submerged arc welding automatic welding process, which is characterized in that: the 0Cr11Ni2MoNbV thick plate material submerged arc welding automatic welding process is specifically: the submerged arc automatic welding is a butt joint, and the test piece For thick plate parts, beveling, choose HJ260 stainless steel flux, Φ5.0 H0Cr20Ni10Ti welding wire, welding assembly gap is 0.8mm, a layer of 6mm thick flux is placed on the back of the weldment, in order to reduce or prevent the corner deformation of the weldment, Fix the weldment with a pressing block, add an arc starting plate and an arc receiving plate, the welding current is 600A, the arc voltage is 32V, the dry elongation of the welding wire is 25mm, the front side is welded in 4 layers, the slag shell is removed between the layers, and the weld seam is ground with a grinding wheel to make it The metal luster is exposed to prevent slag inclusion. The w...

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Abstract

The invention provides a process for welding a 0Cr11Ni2MoNbV plank material by union melt welding. The process comprises the following steps: union melt welding is a butt joint; a sample is a plank piece, and is provided with a divided edge; stainless steel welding fluid and welding wire are selected; a layer of welding fluid is lined on the back of a welding piece; the welding piece is fixed by a briquette, and is added with an end tab and an arc-receive tab; 4 layers are welded on the front side of the welding piece; slug shells among layers are removed; welding seams are ground by a grinding wheel to expose metal luster of the welding seam; welding directions of the layers are opposite; the back of the sample is subject to back chipping by arc gouging, and then is ground by the grinding wheel to remove an oxide coating; two layers are welded; and a union-melt weld sample is in a supplying state before welding, and is subject to quenching at 1050 DEG C and drawing temper at 570 DEG C after welding. The invention has the advantages of good appearance and inside quality of a welding joint, excellent mechanical performance of the joint at room temperature and high temperature, good protecting effect, high quality of the joint, simple and convenient operation, wide application range and the like.

Description

technical field [0001] The invention relates to the field of material welding, and in particular provides an automatic welding process for submerged arc welding of 0Cr11Ni2MoNbV thick plate materials. Background technique [0002] 0Cr11Ni2MoNbV is a new type of material newly developed in my country in recent years. It is a martensitic stainless steel with comprehensive properties of strength and plasticity. It is used to manufacture casings, shafts, blades and other components of a heavy-duty gas turbine. A large number of welding processes are required in the component manufacturing process. At present, there is no technical information on the welding of this alloy, and there is no relevant information on its welding technology. Contents of the invention [0003] The object of the present invention is to provide a kind of 0Cr11Ni2MoNbV thick plate material submerged arc welding automatic welding process. [0004] 0Cr11Ni2MoNbV material composition and proportion are: c...

Claims

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Application Information

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IPC IPC(8): B23K9/18B23K9/02B23K9/095B23K33/00C21D1/18C21D9/50C21D11/00B23K101/16B23K103/04
Inventor 张琪崔荣繁曲伸秦旭东那旭高山
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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