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Submerged-arc welding flux-cored wire

A technology of flux-cored welding wire and submerged arc welding, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc.

Inactive Publication Date: 2014-08-13
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, in the field of metal welding material technology, there is no welding wire suitable for surfacing welding of continuous casting kiln, welding of steam turbine components, centrifugal pump blades, etc., to enhance their wear resistance and corrosion resistance. Submerged arc welding flux core wire report

Method used

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  • Submerged-arc welding flux-cored wire
  • Submerged-arc welding flux-cored wire
  • Submerged-arc welding flux-cored wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] 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 200 grams of rutile, 110 grams of silicon-manganese alloy, 200 grams of iron powder, 100 grams of nickel powder, 200 grams of metal chromium, 80 grams of aluminum-magnesium alloy, and 110 grams of micro-carbon ferrochrome . 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.

[0093] 1. Test method:

[0094] (1) Chemical composition test

[0095] After welding the welding wire to the surfacing welding test plate, take the welding consumables in...

Embodiment 2

[0104] 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 150 grams of rutile, 50 grams of silicon-manganese alloy, 350 grams of iron powder, 100 grams of nickel powder, 150 grams of metal chromium, 120 grams of aluminum-magnesium alloy, and 80 grams of micro-carbon ferrochrome . 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 3.2mm.

Embodiment 3

[0106] 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, 50 grams of silicon-manganese alloy, 150 grams of iron powder, 150 grams of nickel powder, 150 grams of metal chromium, 100 grams of aluminum-magnesium alloy, and 150 grams of micro-carbon ferrochrome . 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 3.2mm.

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Abstract

The invention discloses a submerged-arc welding flux-cored wire. The submerged-arc welding flux-cored wire is characterized in that flux core powder comprises the following components in percentage by weight: 10 to 32 percent of rutile, 5 to 15 percent of silicon-manganese alloy, 10 to 45 percent of iron powder, 2 to 15 percent of nickel powder, 10 to 40 percent of chromium metal, 2 to 15 percent of aluminum magnesium alloy and 5 to 15 percent of micro-carbon ferro chrome. The submerged-arc welding flux-cored wire has the advantages that the submerged-arc welding flux-cored wire is resistant to wear and corrosion and is suitable for overlaying of continuous rollers and welding of components of gas turbines and blades of centrifugal pumps.

Description

technical field [0001] The invention relates to the technical field of metal welding materials, in particular to a flux-cored welding wire for submerged arc welding. Background technique [0002] At present, continuous casting kilns, steam turbine parts, centrifugal pump blades, etc. are used in mechanical equipment, need long-term high-speed operation, and are in contact with lubricating oil; thus these parts are required to have high wear resistance and wear resistance. corrosion performance. [0003] However, in the field of metal welding material technology, there is no welding wire suitable for surfacing welding of continuous casting kiln, welding of steam turbine components, centrifugal pump blades, etc., to enhance their wear resistance and corrosion resistance. Submerged arc welding flux core Wire reports. Contents of the invention [0004] The present invention aims at the above-mentioned deficiencies of the prior art, and provides a wear-resistant and corrosion...

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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