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Carbon dioxide gas shielded welding flux-cored wire

A technology of gas shielded welding and flux cored wire, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc.

Inactive Publication Date: 2014-11-26
NINGBO LONGXING WELDING CUTTING TECH STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is currently no welding wire in the field of metal welding material technology that is suitable for welding of hot rolling mill guide plates, hot section molds, valves, etc., which need to work under long-term high-temperature impact loads and still maintain their hardness and non-deformation properties, so as to strengthen them. Report on Hardness Properties of CO2 Gas Shielded Flux-Cored Welding Wires

Method used

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  • Carbon dioxide gas shielded welding flux-cored wire
  • Carbon dioxide gas shielded welding flux-cored wire
  • Carbon dioxide gas shielded welding flux-cored wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Select a steel strip with a nominal thickness of 0.60mm and a nominal width of 1000mm for flux cored wire, 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 170 grams of rutile, 150 grams of silicon-manganese alloy, 250 grams of iron powder, 90 grams of nickel powder, 180 grams of metal chromium, 30 grams of aluminum-magnesium alloy, 70 grams of ferromolybdenum, vanadium 60 grams of iron. Put all the raw materials into the mixer and mix for 45 minutes, then add them to the U-shaped channel steel belt, the filling rate is 35%; close the U-shaped channel so that the drug core powder is wrapped in it, and then draw and reduce the diameter through the wire drawing machine , finally making the diameter of the wire reach 3.2mm.

[0095] 1. Test method:

[0096] (1) Chemical composition test

[0097] After welding the welding wire to the surfacing welding test plate, take the welding con...

Embodiment 2

[0106] Select a steel strip with a nominal thickness of 0.50mm and a nominal width of 900mm for flux-cored wire cold-rolled steel strip, 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 120 grams of rutile, 140 grams of silicon-manganese alloy, 300 grams of iron powder, 120 grams of nickel powder, 20 grams of metal chromium, 40 grams of aluminum-magnesium alloy, 40 grams of ferromolybdenum, vanadium Iron 40 grams. Put all the raw materials into the mixer and mix for 45 minutes, then add them to the U-shaped channel steel belt, the filling rate is 37%; close the U-shaped channel so that the drug core powder is wrapped in it, and then draw and reduce the diameter through the wire drawing machine , finally making the diameter of the wire reach 1.6mm.

Embodiment 3

[0108] Select a steel strip with a nominal thickness of 0.80mm and a nominal width of 1020mm for flux-cored wire cold-rolled steel strip, 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 250 grams of rutile, 200 grams of silicon-manganese alloy, 150 grams of iron powder, 50 grams of nickel powder, 100 grams of metal chromium, 50 grams of aluminum-magnesium alloy, 100 grams of ferromolybdenum, vanadium Iron 100 grams. Put all the raw materials into the mixer and mix for 45 minutes, then add them to the U-shaped channel steel belt, the filling rate is 37%; close the U-shaped channel so that the drug core powder is wrapped in it, and then draw and reduce the diameter through the wire drawing machine , finally making the diameter of the wire reach 1.6mm.

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Abstract

The invention discloses a carbon dioxide gas shielded welding flux-cored wire, which is characterized in that the flux-cored powder of the wire is mixed by the following components in percentage by weight: 10-30% of rutile, 10-30% of silicomanganese, 15-40% of iron powder, 2-15% of nickel powder, 2-25% of chromium metal, 1-5% of aluminium magnesium alloy, 2-10% of ferromolybdenum and 2-10% of ferrovanadium. The carbon dioxide gas shielded welding flux-cored wire disclosed by the invention has the advantages that the hardness and the non-deforming performance of a hot mill guide plate, a hot-forging die, a valve and the like are still can be kept even if the hot mill guide plate, the hot-forging die, the valve and the like work under the high-temperature impact load for a long time.

Description

technical field [0001] The invention relates to the technical field of metal welding materials, in particular to a carbon dioxide gas shielded flux-cored welding wire. Background technique [0002] At present, hot rolling mill guide plates, hot section molds, valves, etc. are used in mechanical equipment and need to work under long-term high-temperature impact loads; this requires these parts to be able to effectively maintain their hardness under long-term high-temperature impact loads , Non-deformable performance to ensure its use effect. [0003] However, there is currently no welding wire in the field of metal welding material technology that is suitable for welding of hot rolling mill guide plates, hot section molds, valves, etc., which need to work under long-term high-temperature impact loads and still maintain their hardness and non-deformation properties, so as to strengthen them. Hardness properties of carbon dioxide gas shielded flux-cored wires are reported. C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/368
Inventor 陈一赵善军邬剑敏
Owner NINGBO LONGXING WELDING CUTTING TECH STOCK
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