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Self-protected flux-cored wire for welding 0Cr13Ni5Mo stainless steel and 17-4PH stainless steel and preparation method thereof

A technology of flux-cored welding wire and stainless steel, applied in welding equipment, welding medium, welding/cutting medium/material, etc., to achieve the effect of less welding fume, high production efficiency, and less welding spatter

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

[0006] At present, regarding the welding of 0Cr13Ni5Mo and 17-4PH dissimilar steel, there is no report on the welding material for its fusion welding connection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] The preparation method of 0Cr13Ni5Mo stainless steel of the present invention and 17-4PH stainless steel welding self-protection type flux-cored welding wire, concrete steps are as follows:

[0045] Step 1, weighed respectively by mass percentage: manganese powder 2%~6%, chromium powder 13%~18%, niobium powder 1%~2.5%, copper powder 6%~13%, nickel powder 5.5%~8%, Rutile powder 8%~11%, marble 25%~33%, fluorite powder 6%~13%, mica 5%~8%, iron oxide powder 1%~3%, alumina powder 1%~4%, oxidation Calcium powder 1% to 4%, the rest is iron powder, the sum of the mass percentages of the above components is 100%;

[0046] Step 2, mix the rutile powder, marble, fluorite powder, mica, iron oxide powder, aluminum oxide powder and calcium oxide powder weighed in step 1 to obtain mixed drug powder A, add water glass binder to mixed drug powder A and mix Uniform, the addition of water glass binder is 20% of the total mass of the mixed drug powder A, and then placed in a heating furna...

Embodiment 1

[0052] The preparation method of 0Cr13Ni5Mo stainless steel of the present invention and 17-4PH stainless steel welding self-protection type flux-cored welding wire, concrete steps are as follows:

[0053] Step 1, take by weight respectively: manganese powder 4%, chromium powder 13%, niobium powder 1%, copper powder 13%, nickel powder 5.5%, rutile powder 8%, marble 28%, fluorite powder 13%, 5% of mica, 1% of iron oxide powder, 2% of alumina powder, 1% of calcium oxide powder, and the rest is iron powder. The sum of the mass percentages of the above components is 100%;

[0054] Step 2, mix the rutile powder, marble, fluorite powder, mica, iron oxide powder, aluminum oxide powder and calcium oxide powder weighed in step 1 to obtain mixed drug powder A, add water glass binder to mixed drug powder A and mix Evenly, the amount of water glass binder added is 20% of the total mass of the mixed powder A, and then placed in a heating furnace, sintered at 550 ° C for 3.5 hours, crushed,...

Embodiment 2

[0061] The preparation method of 0Cr13Ni5Mo stainless steel of the present invention and 17-4PH stainless steel welding self-protection type flux-cored welding wire, concrete steps are as follows:

[0062] Step 1, take by weight respectively: 6% of manganese powder, 15% of chromium powder, 2% of niobium powder, 10% of copper powder, 8% of nickel powder, 11% of rutile powder, 25% of marble, 6% of fluorite powder, 5% of mica, 1% of iron oxide powder, 1% of aluminum oxide powder, 4% of calcium oxide powder, and the rest is iron powder. The sum of the mass percentages of the above components is 100%;

[0063] Step 2, mix the rutile powder, marble, fluorite powder, mica, iron oxide powder, aluminum oxide powder and calcium oxide powder weighed in step 1 to obtain mixed drug powder A, add water glass binder to mixed drug powder A and mix Evenly, the amount of water glass binder added is 20% of the total mass of the mixed powder A, and then placed in a heating furnace, sintered at 50...

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Abstract

The invention discloses a self-protected flux-cored wire for welding 0Cr13Ni5Mo stainless steel and 17-4PH stainless steel. The self-protected flux-cored wire comprises a flux core and welding scale,wherein the flux core is prepared from the following components in percentage by mass: 2.0-6.0% of manganese powder, 13.0-18.0% of chromium powder, 1.0-2.5% of niobium powder, 6-13% of copper powder,5.5-8.0% of nickel powder, 8-11% of rutile powder, 25-33% of marbles, 6-13% of fluorite powder, 5-8% of mica, 1-3% of ferric oxide powder, 1-4% of aluminum oxide powder, 1-4% of calcium oxide powder and the balance of iron powder, totaling 100%. When the flux-cored wire is welded, protective gas is not additionally added, the welding spatter and soot are little, and the self-protected flux-cored wire has very good welding manufacturability, is suitable for automatic welding equipment and has a relatively high production efficiency.

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-protecting flux-cored welding wire for welding 0Cr13Ni5Mo stainless steel and 17-4PH stainless steel, and also relates to a preparation method of the flux-cored welding wire. Background technique [0002] Energy recovery devices, as an effective means of energy saving, are increasingly showing their development prospects in the world's energy problems. However, the impeller, the key component of the energy recovery device, sometimes breaks, and the fracture location is often located at the blade body and the transition arc. There are problems such as the matching of materials and the applicability of materials to parts. At present, the commonly used materials for energy recovery device blades are 17-4PH and 0Cr13Ni5Mo. In order to improve the service performance of energy recovery device blades, it is of great signific...

Claims

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Application Information

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IPC IPC(8): B23K35/02B23K35/30B23K35/40
CPCB23K35/02B23K35/3053B23K35/40
Inventor 张敏贾芳李洁程康康李静黄超许桓瑞张文辉
Owner XIAN UNIV OF TECH