Gas protective type flux-cored wire for 51 CrV4 spring steel and preparation method thereof

A flux-cored welding wire, 51crv4 technology, applied in welding equipment, welding medium, manufacturing tools, etc., can solve problems such as immature technology development, achieve good welding process performance, beautiful weld shape, and simple preparation method

Inactive Publication Date: 2018-08-03
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are only a few reports on the welding process of 51CrV4 spring steel, and the technology development is immature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation method of gas-shielded flux-cored welding wire for 51CrV4 spring steel is implemented according to the following steps:

[0049] Step 1, weigh 10% of manganese powder, 6% of chromium powder, 5% of vanadium powder, 2% of silicon powder, 28% of rutile, 12% of zircon sand, 14% of fluorite, 9% of quartz sand, long 10% mica powder, 4% mica powder, the sum of the mass percentages of the above components is 100%;

[0050] Step 2, mix zircon sand, fluorite, quartz sand, feldspar and mica powder weighed in step 1 to obtain mixed powder A, add water glass binder to mixed powder A and mix evenly, mix powder A and water glass The mass ratio of the binder is 5:1, and then placed in a heating furnace for sintering at 750°C for 5.5 hours, crushed, and passed through a 60-140 mesh sieve to obtain the mixed powder B;

[0051] Step 3, mix the chromium powder, silicon powder, manganese powder, vanadium powder, and rutile powder weighed in step 1 with the mixed medicinal p...

Embodiment 2

[0057] The preparation method of gas-shielded flux-cored welding wire for 51CrV4 spring steel is implemented according to the following steps:

[0058] Step 1, weigh 11% of manganese powder, 8% of chromium powder, 2% of vanadium powder, 1% of silicon powder, 32% of rutile, 12% of zircon sand, 13% of fluorite, 9% of quartz sand, long 8% mica powder, 4% mica powder, the sum of the mass percentages of the above components is 100%;

[0059] Step 2, mix zircon sand, fluorite, quartz sand, feldspar and mica powder weighed in step 1 to obtain mixed powder A, add water glass binder to mixed powder A and mix evenly, mix powder A and water glass The mass ratio of the binder is 5:1, and then placed in a heating furnace for sintering at 650°C for 4 hours, crushed, and passed through a 60-140 mesh sieve to obtain the mixed drug powder B;

[0060] Step 3, mix the chromium powder, silicon powder, manganese powder, vanadium powder, and rutile powder weighed in step 1 with the mixed medicinal...

Embodiment 3

[0066] The preparation method of gas-shielded flux-cored welding wire for 51CrV4 spring steel is implemented according to the following steps:

[0067] Step 1, weigh 12% of manganese powder, 7% of chromium powder, 5% of vanadium powder, 1% of silicon powder, 27% of rutile, 10% of zircon sand, 14% of fluorite, 10% of quartz sand, long 9% mica powder, 5% mica powder, the sum of the mass percentages of the above components is 100%;

[0068] Step 2, mix zircon sand, fluorite, quartz sand, feldspar and mica powder weighed in step 1 to obtain mixed powder A, add water glass binder to mixed powder A and mix evenly, mix powder A and water glass The mass ratio of the binder is 5:1, and then placed in a heating furnace for sintering at 670°C for 6 hours, crushed, and passed through a 60-140 mesh sieve to obtain the mixed drug powder B;

[0069] Step 3, mix the chromium powder, silicon powder, manganese powder, vanadium powder, and rutile powder weighed in step 1 with the mixed medicina...

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Abstract

The invention discloses a gas protective type flux-cored wire for 51 CrV4 spring steel. The gas protective type flux-cored wire comprises flux core and welding scale, wherein the flux core comprises the following components in percentage by mass: 7%-12% of manganese powder, 6%-10% of chromium powder, 2%-5% of vanadium powder, 1%-2% of ganister sand, 27%-32% of rutile, 9%-12% of zircon sand, 13%-16% of fluorite, 7%-10% of quartz sand, 7%-10% of feldspar, and 4%-6% of mica powder; and the sum of the mass percentage of the components is 100%. A mineral slag system is utilized to generate slag, sothat the furnace hearth formed during welding is protected, and the self-protection function is realized; in addition, the gas protective type flux-cored wire has the advantages that welding spatteris less, the weld forming is regular and artistic and the welding processing property is excellent, is can be used for an automatic continuous wire feeding welding machine and has higher production efficiency. The preparation method of the gas protective type flux-cored wire is simple, convenient to operate, high in applicability and used for mass 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 gas-shielded flux-cored welding wire for 51CrV4 spring steel, and also relates to a preparation method of the flux-cored welding wire. Background technique [0002] Spring steel is an important class of construction steel raw materials, and its application fields are very wide, including infrastructure such as trains and automobiles. Since my country's railway vehicles put forward the requirements of "speed increase, heavy load, and safety", in the past few years, my country has expanded its railway routes by 20,000 kilometers, of which 13,000 kilometers have a design speed of 350km per hour. The automobile industry is also the main body of the spring steel downstream industry, and the finished spring rods required for the manufacture of automobiles each year account for more than 60% of the total. [0003] 51CrV4 spring st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368B23K35/12B23K35/40
CPCB23K35/368B23K35/0266B23K35/406
Inventor 张敏许桓瑞慕二龙王晓伟李静李洁贾芳黄超
Owner XIAN UNIV OF TECH
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