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High-carbon high-chrome high-vanadium wearable surfacing self-shielded flux-cored wire

A technology of flux-cored welding wire, high carbon and high chromium, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of high brittleness, easy to drop blocks, and shortened service life, so as to improve hardness and wear resistance properties, excellent anti-block performance, and the effect of uniform crack morphology

Inactive Publication Date: 2016-07-27
GRIPM ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional high-chromium cast iron surfacing alloy has low hardness, poor wear resistance, and high brittleness, and is easy to fall off during wear; the hardness of the high-chromium wear-resistant surfacing alloy containing boron can reach HRC60, but its brittleness is large, so that Its lifespan is greatly reduced

Method used

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  • High-carbon high-chrome high-vanadium wearable surfacing self-shielded flux-cored wire
  • High-carbon high-chrome high-vanadium wearable surfacing self-shielded flux-cored wire
  • High-carbon high-chrome high-vanadium wearable surfacing self-shielded flux-cored wire

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Experimental program
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Effect test

Embodiment 1

[0020] Low carbon steel strip H08A is used, its thickness is 0.3mm, and its width is 16mm.

[0021] The drug core components are: 100g high carbon ferrochrome, 450g chromium carbide, 200g ferrovanadium, 35g ferromolybdenum, 20g electrolytic manganese, 20g ferrosilicon, 18g ferroboron, 20g graphite, 13g aluminum magnesium, 10g barium fluoride, barium carbonate 13g, marble 10g, fluorite 13g, iron powder 78g, a total of 1000g powder, the weight ratio is 50%.

[0022] The above-mentioned low-carbon steel strip and flux core were made into a flux-cored welding wire with a diameter of 3.2 mm.

Embodiment 2

[0024] Low carbon steel strip H08A is used, its thickness is 0.3mm, and its width is 16mm.

[0025] The drug core components are: 63g of high-carbon ferrochrome, 500g of chromium carbide, 250g of ferro-vanadium, 25g of ferro-molybdenum, 20g of electrolytic manganese, 20g of ferrosilicon, 22g of ferro-boron, 20g of graphite, 14g of aluminum magnesium, 14g of zircon sand, fluoride Barium 16g, barium carbonate 20g, marble 16g, totally 1000g powder, the counterweight ratio is 50%.

[0026] The above-mentioned low-carbon steel strip and flux core were made into a flux-cored welding wire with a diameter of 3.2 mm.

Embodiment 3

[0028] Low carbon steel strip H08A is used, its thickness is 0.3mm, and its width is 16mm.

[0029] The drug core components are: 50g of high-carbon ferrochrome, 500g of chromium carbide, 300g of ferrovanadium, 15g of ferromolybdenum, 20g of electrolytic manganese, 20g of ferrosilicon, 16g of ferroboron, 20g of graphite, 10g of aluminum magnesium, 8g of barium fluoride, and 13g of marble , sodium fluorosilicate 11g, iron powder 17g, a total of 1000g powder, the weight ratio is 50%.

[0030] The above-mentioned low-carbon steel strip and flux core are made into a flux-cored wire with a diameter of 3.2 mm, and the flux-cored wire is made into a surfacing alloy. The metallographic diagram of the surfacing alloy is as follows figure 2 As shown, it can be seen from the figure that the surface structure of the surfacing layer is uniform, and there are no defects such as pores, slag inclusions, and undercuts.

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Abstract

The invention discloses a high-carbon high-chrome high-vanadium wearable surfacing self-shielded flux-cored wire. According to the flux-cored wire, the core is prepared from the following components in mass percentage: 5-25% of high carbon ferro-chrome, 30-60% of chromium carbide, 15-35% of ferrovanadium, 0.5-5% of ferromolybdenum, 1-4% of electrolytic manganese, 1-4% of ferrosilicon, 1-4% of ferroboron, 1-5% of graphite, 1-5% of aluminium magnesium, 0-3% of zircon sand, 0-4% of marble, 0-3% of barium fluoride, 0-5% of barium carbonate, 0-3% of sodium fluosilicate, and 0-5% of fluorite; the skin of the flux-cored wire is a mild-carbon steel strip, the diameter is 1.6-4.0mm, and the counterweight ratio is 44-53%. According to the flux-cored wire disclosed by the invention, the rigidity and wearability of surfacing alloy can be greatly improved and the toughness of the surfacing alloy cannot be reduced; and the prepared surfacing alloy can be widely applied to surfacing repair of parts with severe low and intermediate stress abrasion at low temperature, intermediate temperature and high temperature and manufacture of new parts.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and relates to a high-carbon, high-chromium, high-vanadium wear-resistant surfacing self-protecting flux-cored welding wire. Background technique [0002] Wear is one of the main causes of mechanical failure, of which abrasive wear accounts for more than 50%. With the development of modern industry, mechanical equipment and its parts have higher and higher requirements on the wear resistance of materials in use, and their service life has become an increasingly important factor affecting the production efficiency of mechanical equipment. According to the incomplete statistics of the five departments of my country's electric power, building materials, metallurgy, coal mining and agricultural machinery, the annual consumption of metal materials is more than 3 million tons, and the loss of energy consumption and shutdown due to replacement parts is as high as several billion yuan. Especia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368B23K35/30B23K35/12
Inventor 刘飞付东兴孙昊张彬李文杰杨中元汪礼敏张景怀
Owner GRIPM ADVANCED MATERIALS CO LTD
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