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Co2 gas shielded stainless steel flux-cored welding wire and preparation method thereof

A technology of flux-cored welding wire and gas shielding, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of damage, large space occupation, small specific gravity, etc.

Inactive Publication Date: 2016-06-22
NINGBO LONGXING WELDING CUTTING TECH STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the specifications of stainless steel flux-cored welding wire used in the market are only φ1.2mm and above, but it is difficult to weld this specification of welding wire on ultra-thin stainless steel appliances and containers; moreover, argon arc welding must be used for welding , if you want to use manual continuous welding with low price and easy operation, because of the use of large-size welding wire (1.2mm and above), relatively large current and voltage should be used when welding with welding machine (such as current above 220A, voltage above 25V) Will cause the welded object (due to ultra-thin) breakdown or damage, etc.
[0003] Moreover, due to the small specific gravity of the stainless steel flux-cored welding wires currently used in the market, when the same amount of welding wire needs to be filled in the steel strip, it occupies a large space. The core powder takes up a lot of space, and the core powder is sharply compressed during the drawing process, which creates pressure on the steel strip, causing the steel strip to break easily and cause powder leakage

Method used

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  • Co2 gas shielded stainless steel flux-cored welding wire and preparation method thereof
  • Co2 gas shielded stainless steel flux-cored welding wire and preparation method thereof
  • Co2 gas shielded stainless steel flux-cored welding wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Select the steel strip with a nominal thickness of 0.40mm, cut the nominal width into a cold-rolled steel strip for flux-cored welding wire with a nominal width of 14mm, and use a forming machine to roll it into a U-shaped groove. Take 1000 grams of submerged arc welding flux-cored wire as an example: take 210 grams of rutile, 130 grams of silicon-manganese alloy, 170 grams of iron powder, 90 grams of nickel powder, 60 grams of aluminum-magnesium alloy, 180 grams of micro-carbon ferrochromium, and 100 grams of ferromolybdenum , 60 grams of ferrovanadium. Put all the raw materials into the mixer and mix for 30 minutes, then take 500 grams and add them to the U-shaped channel steel belt; close the U-shaped groove so that the drug core powder is wrapped in it and flattened, and rolled into a U-shaped groove again, and the remaining 500 The core powder is added to the U-shaped channel steel belt, and then drawn and reduced one by one by a wire drawing machine, so that the d...

Embodiment 2

[0097] Select the steel strip with a nominal thickness of 0.40mm, cut the nominal width into a cold-rolled steel strip for flux-cored welding wire with a nominal width of 14mm, and use a forming machine to roll it into a U-shaped groove. Take 1000 grams of submerged arc welding flux-cored wire as an example: take 180 grams of rutile, 150 grams of silicon-manganese alloy, 150 grams of iron powder, 120 grams of nickel powder, 50 grams of aluminum-magnesium alloy, 200 grams of micro-carbon ferrochromium, and 90 grams of ferromolybdenum , 60 grams of ferrovanadium. Put all the raw materials into the mixer and mix for 30 minutes, then take 500 grams and add them to the U-shaped channel steel belt; close the U-shaped groove so that the drug core powder is wrapped in it and flattened, and rolled into a U-shaped groove again, and the remaining 500 The core powder is added to the U-shaped channel steel belt, and then drawn and reduced one by one by a wire drawing machine, so that the d...

Embodiment 3

[0099] Select the steel strip with a nominal thickness of 0.40mm, cut the nominal width into a cold-rolled steel strip for flux-cored welding wire with a nominal width of 14mm, and use a forming machine to roll it into a U-shaped groove. Take 1000 grams of submerged arc welding flux-cored wire as an example: take 230 grams of rutile, 110 grams of silicon-manganese alloy, 150 grams of iron powder, 80 grams of nickel powder, 80 grams of aluminum-magnesium alloy, 150 grams of micro-carbon ferrochromium, and 80 grams of ferromolybdenum , 120 grams of ferrovanadium. Put all the raw materials into the mixer and mix for 30 minutes, then take 500 grams and add them to the U-shaped channel steel belt; close the U-shaped groove so that the drug core powder is wrapped in it and flattened, and rolled into a U-shaped groove again, and the remaining 500 The core powder is added to the U-shaped channel steel belt, and then drawn and reduced one by one by a wire drawing machine, so that the d...

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Abstract

The invention discloses a stainless steel flux cored wire protected by CO2 gas. The stainless steel flux cored wire protected by CO2 gas is characterized in that flux cored powder and a steel belt wrapping the flux cored powder are included, and the flux cored powder of the flux cored wire comprises, by weight, 15-35% of rutile, 12-25% of silicon manganese alloy, 12-30% of iron powder, 5-16% of nickel powder, 3-10% of aluminium magnesium alloy, 10-25% of micro-carbon ferro chrome, 5-15% of ferro-molybdenum and 5-15% of ferrovanadium. The stainless steel flux cored wire protected by CO2 gas has the advantages of being suitable for welding on small-specification ultrathin stainless steel devices and containers.

Description

technical field [0001] The invention relates to the technical field of metal welding materials, in particular to a CO 2 Gas-shielded stainless steel flux-cored welding wire and a preparation method thereof. Background technique [0002] At present, the specifications of stainless steel flux-cored welding wire used in the market are only φ1.2mm and above, but it is difficult to weld this specification of welding wire on ultra-thin stainless steel appliances and containers; moreover, argon arc welding must be used for welding , if you want to use manual continuous welding with low price and easy operation, because of the use of large-size welding wire (1.2mm and above), relatively large current and voltage should be used when welding with welding machine (such as current above 220A, voltage above 25V) It will cause breakdown or damage of the welded object (due to ultra-thinness). [0003] Moreover, due to the small specific gravity of the stainless steel flux-cored wires cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/368B23K35/40
CPCB23K35/3053B23K35/368B23K35/406
Inventor 赵善军邬剑敏陈一
Owner NINGBO LONGXING WELDING CUTTING TECH STOCK
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