Self-protection flux-cored wire for welding of 1Cr12NiW1MoV stainless steel and G520 stainless steel and preparation method thereof

A 1.1cr12niw1mov, flux-cored welding wire technology, applied in the field of welding materials and its preparation, to achieve good welding process performance, simple preparation method, and high production efficiency

Inactive Publication Date: 2018-07-13
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are only a few reports on the welding process of 1Cr12NiW1MoV stainless steel and G520 stainless steel dissimilar welding, and there is no report on its fusion welding self-shielded flux cored wire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] The preparation method of 1Cr12NiW1MoV stainless steel and G520 stainless steel welding self-shielding flux-cored wire, the specific steps are as follows:

[0041] Step 1. Weigh respectively according to mass percentage: 4%-6% of quartz, 26%-34% of chromium powder, 2%-4% of manganese powder, 3%-6% of ferroniobium powder, 15%-23% of barium fluoride powder %, rutile powder 12% to 16%, lithium carbonate powder 2% to 6%, iron oxide powder 5% to 9%, alumina powder 4% to 6%, magnesium oxide 4% to 6%, and the rest is iron powder , the sum of the mass percentages of the above components is 100%;

[0042] Step 2, mix the barium fluoride powder, lithium carbonate powder, iron oxide powder, quartz, aluminum oxide powder and magnesium oxide powder that step 1 takes by weighing, obtain mixed medicine powder A, add water glass binder in mixed medicine powder A and Mix evenly, the mass ratio of mixed drug powder A to water glass binder is 5:1, then place it in a heating furnace, sint...

Embodiment 1

[0048] The preparation method of 1Cr12NiW1MoV stainless steel and G520 stainless steel welding self-shielding flux-cored wire, the specific steps are as follows:

[0049] Step 1. Weigh respectively by mass percentage: 6% of quartz, 26% of chromium powder, 4% of manganese powder, 6% of ferroniobium powder, 15% of barium fluoride powder, 16% of rutile powder, 2% of lithium carbonate powder, 9% of iron powder, 6% of alumina powder, 6% of magnesium oxide powder, and the rest is iron powder. The sum of the mass percentages of the above components is 100%;

[0050] Step 2, mix the barium fluoride powder, lithium carbonate powder, iron oxide powder, quartz, aluminum oxide powder and magnesium oxide powder that step 1 takes by weighing, obtain mixed medicine powder A, add water glass binder in mixed medicine powder A and Mix evenly, the mass ratio of mixed drug powder A to water glass binder is 5:1, then place in a heating furnace, sinter at 650°C for 5 hours, crush and pass through a...

Embodiment 2

[0057] The preparation method of 1Cr12NiW1MoV stainless steel and G520 stainless steel welding self-shielding flux-cored wire, the specific steps are as follows:

[0058] Step 1. Weigh respectively by mass percentage: 4% of quartz, 34% of chromium powder, 2% of manganese powder, 3% of ferroniobium powder, 19% of barium fluoride powder, 12% of rutile powder, 6% of lithium carbonate powder, 7% iron powder, 5% aluminum oxide powder, 5% magnesium oxide powder, and the rest is iron powder. The sum of the mass percentages of the above components is 100%;

[0059] Step 2, mix the barium fluoride powder, lithium carbonate powder, iron oxide powder, quartz, aluminum oxide powder and magnesium oxide powder that step 1 takes by weighing, obtain mixed medicine powder A, add water glass binder in mixed medicine powder A and Mix evenly, the mass ratio of mixed drug powder A to water glass binder is 5:1, then place in a heating furnace, sinter at 700°C for 4 hours, crush and pass through a 6...

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Abstract

The invention discloses a self-protection flux-cored wire for welding of 1Cr12NiW1MoV stainless steel and G520 stainless steel. The self-protection flux-cored wire comprises a wire core and a cover, wherein the wire core comprises the following components in percentage by mass: 4-6% of quartz, 26-34% of chromium powder, 2-4% of manganese powder, 3-6% of ferroniobium powder, 15-23% of barium fluoride powder, 12-16% of rutile powder, 2-6% of lithium carbonate powder, 5-9% of iron oxide powder, 4-6% of aluminum oxide powder, 4-6% of magnesium oxide, and the balance of iron powder; and the mass percentage sum of all the components is 100%. Compared with a stainless steel welding rod and a solid welding wire, the flux-cored wire has the advantages of few welding spatters, beautiful welding linemolding and excellent welding process performances, can be used for a continuous wire feeding automatic welding machine, achieves higher production efficiency, and saves shielded gas; and meanwhile,a preparation method of the flux-cored wire is simple, convenient to operate and suitable for batch production.

Description

technical field [0001] The invention belongs to the technical field of welding materials and preparation methods thereof, and in particular relates to a self-protective flux-cored welding wire for welding 1Cr12NiW1MoV stainless steel and G520 stainless steel, and also relates to a preparation method of the flux-cored welding wire. Background technique [0002] In recent years, the use of large-scale fans in my country's industry has become increasingly widespread, and the operating conditions have become more and more complex. In order to improve the overall quality of the fan, the blade material at the core of the fan is required to have good comprehensive mechanical properties such as high strength, toughness and hardness. performance. [0003] G520 stainless steel is a new type of precipitation hardening martensitic stainless steel developed on the basis of FV520 type martensitic stainless steel. It has higher strength, good welding performance, heat resistance and corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/368B23K35/40B23K103/04
CPCB23K35/3086B23K35/0266B23K35/3605B23K35/3608B23K35/368B23K35/406
Inventor 张敏李洁贾芳程康康李静许桓瑞黄超
Owner XIAN UNIV OF TECH
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