Bead weld flux-cored wire for repairing hammer forging die and preparation method

A technology of flux-cored welding wire and welding wire, applied in welding equipment, welding medium, manufacturing tools, etc., can solve problems such as low efficiency, and achieve good surfacing processability, good welding wire crack resistance, and good temper softening resistance. Effect

Inactive Publication Date: 2012-12-12
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, surfacing welding electrodes are mainly used for repairing hammer forging dies in China, and the efficiency is relatively low.

Method used

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  • Bead weld flux-cored wire for repairing hammer forging die and preparation method
  • Bead weld flux-cored wire for repairing hammer forging die and preparation method
  • Bead weld flux-cored wire for repairing hammer forging die and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 400g of calcium fluoride, 50g of soda ash, 50g of quartz, 200g of rutile, 850g of ferrochrome powder, 500g of pure nickel powder, 400g of electrolytic manganese, 300g of ferromolybdenum powder, 170g of ferrosilicon powder, 50g of ferrovanadium powder, and 7.03kg of reduced iron powder. Put the obtained flux core powder into the U-shaped steel strip groove, the filling rate is 20%, close the U-shaped groove to obtain the drill pipe wear-resistant band surfacing flux-cored wire with a diameter of 1.6mm, and prepare the surfacing according to the above process. The welding layer, the alloy composition in the obtained deposited metal is: C: 0.1wt.%; Cr: 1.2wt.%; Ni: 1wt.%; Mn: 0.74wt.%; Mo: 0.45wt.%; Si: 0.16 wt.%; V: 0.05wt.%; Fe: balance.

Embodiment 2

[0025] Take 500g of calcium fluoride, 100g of soda ash, 100g of quartz, 300g of rutile, 900g of ferrochrome powder, 600g of pure nickel powder, 550g of electrolytic manganese, 400g of ferromolybdenum powder, 200g of ferrosilicon powder, 80g of ferrovanadium powder, and 76.27kg of reduced iron powder. Put the obtained flux core powder into the U-shaped steel strip groove, the filling rate is 20%, close the U-shaped groove to obtain the drill pipe wear-resistant band surfacing flux-cored wire with a diameter of 1.6mm, and prepare the surfacing according to the above process. The welding layer, the alloy composition in the obtained deposited metal is: C: 0.13wt.%; Cr: 1.3wt.%; Ni: 1.2wt.%; Mn: 0.9wt.%; Mo: 0.6wt.%; Si: 0.19wt.%; V: 0.08wt.%; Fe: balance.

Embodiment 3

[0027] Take 600g of calcium fluoride, 200g of soda ash, 200g of quartz, 450g of rutile, 950g of ferrochrome powder, 650g of pure nickel powder, 550g of electrolytic manganese, 450g of ferromolybdenum powder, 250g of ferrosilicon powder, 90g of ferrovanadium powder, and 5.61kg of reduced iron powder. Put the obtained flux core powder into the U-shaped steel strip groove, the filling rate is 20%, close the U-shaped groove to obtain the drill pipe wear-resistant band surfacing flux-cored wire with a diameter of 1.6mm, and prepare the surfacing according to the above process. The welding layer, the alloy composition in the obtained deposited metal is: C: 0.15wt.%; Cr: 1.35wt.%; Ni: 1.3wt.%; Mn: 1wt.%; Mo: 0.68wt.%; Si: 0.23 wt.%; V: 0.09wt.%; Fe: balance.

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Abstract

The invention provides a bead weld flux-cored wire for repairing a hammer forging die and a preparation method, and belongs to the field of a flux-cored wire. According to the bead weld flux-cored wire, flux-cored powder is wrapped with a carbon steel belt, and a filling rate is of 20 to 35%; and the flux-cored powder comprises the following components in percentage by weight: 4 to 12% of calcium fluoride, 0.5 to 4.5% of soda, 0.5 to 4.5% of quartz, 2 to 12% of rutile, 8.5 to 17% of ferrochrome powder, 5 to 11% of nickel powder, 4 to 11% of electrolytic manganese, 3 to 6.5% of ferromolybdenum, 1.7 to 11% of ferrosilicon, 0.5 to 2.1% of ferrovanadium, and the balance of ferrous powder; and fused alloy elements comprise comprises the following components in percentage by weight: 0.1 to 0.27% of C, 1.2 to 2.2% of Cr, 1 to 2.3% of Ni, 0.74 to 2% of Mn, 0.45 to 1% of Mo, 0.16 to 1.1% of Si, 0.05 to 0.22% of V, and the balance of Fe. The bead weld flux-cored wire has high efficiency, a good technical performance, and high temperature hardness and thermal fatigue resistance performances.

Description

technical field [0001] The invention belongs to the field of flux-cored welding wires, and in particular relates to a flux-cored welding wire used for repairing hammer forging dies. Background technique [0002] The traditional hammer forging die steel is a homogeneous material, and the limitation of its high temperature service performance seriously restricts the improvement of the service life of the hammer forging die. Using surfacing technology to treat the surface of the mold can save a lot of precious metals, improve the service life of materials, and have great economic benefits. Especially for mold parts working in some special environments, the surface wear is very serious, and some are even broken or broken. The use of surfacing welding technology for repair can effectively improve the service life of workpieces or repair waste workpieces, which not only improves wear resistance, prolongs the service life of parts, reduces the time for replacing worn parts, but al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368B23K35/40
Inventor 周正蒋建敏孙昊贺定勇赵秋颖崔丽王智慧李晓延
Owner BEIJING UNIV OF TECH
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