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Pile up welding flux cored wire used for remanufacturing compound bimetal large special wear resistant parts

A technology of composite bimetal and wear-resistant parts, applied in the field of material science and engineering, can solve the problems of polluting the environment, environmental pollution, difficult to break, etc., and achieve the effect of avoiding pollution, wide market space, and reducing energy consumption.

Inactive Publication Date: 2007-07-18
QINHUANGDAO WEIERDE SPECIAL WELDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, scrapped workpieces are used as raw materials for scrap steel. Through recycling, they can re-enter the manufacturing process of large wear-resistant parts, re-wasting energy and polluting the environment; Before and after the workshop in the factory area, it also causes pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Surfacing and remanufacturing of large coal grinding rollers, the chemical composition (wt%) of this flux-cored wire used for surfacing welding of large coal grinding roller wear parts is: high carbon ferrochrome 45, high carbon ferromanganese 4, ferrosilicon 6 , Ferrovanadium 4, Ferromolybdenum 4, Rare Earth Oxide 5, Graphite 10, Ferroniobium 4, Chromium Powder 8, Ferroboron 2, Fluorite 6, Aluminum, Magnesium Powder 5. The outer skin is made of low carbon steel strip. For ferrosilicon, ferrochromium and ferromanganese, passivation treatment is required before use. The passivation process for ferrosilicon powder is 730°C, ferrochrome powder is 560°C, and ferromanganese powder is 320°C. The above metal powders are all kept for 1 hour. The relevant powders in the above formula are mixed with a mixer, and the flux-cored wire is manufactured with special flux-cored wire production equipment. Select hard Ni4 alloy cast iron or 65Mn as the base material, use the surfacing we...

Embodiment 2

[0011] Surfacing and remanufacturing the bell (bucket) on the blast furnace distributor, which is the key component of the blast furnace distributor. During the feeding and blanking process, the charging bell (bucket) not only bears the impact and wear of the furnace charge, but also is subjected to the erosion and corrosion of the gas. Therefore, the hardening treatment of the joint surface of the material bell (bucket) is the key to improving its service life.

[0012] The chemical composition (wt%) of the flux-cored wire used for this material bell (bucket) surfacing welding on the blast furnace distributor is: high carbon ferrochrome 55, high carbon ferromanganese 1, ferrosilicon 4, ferrosilicon 1, molybdenum 1 iron, 2 rare earth oxides, 20 graphite, 1 ferroniobium, 5 chromium powder, 1 ferroboron, 4 fluorite, 5 aluminum and magnesium powder. The outer skin is made of low carbon steel strip. Its manufacturing process and surfacing process are the same as those of large c...

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Abstract

The present invention discloses a surfacing flux-cored wire for refabrication of composite bimetal large-size special wear-resistant component. Its chemical composition includes (by wt%) 45-55% of high-carbon ferrochrome, 1-4% of high-carbon manganese iron, 4-6% of tantiron, 1-4% of ferrovanadium, 1-4% of ferromolybdenum, 2-5% of rare earth oxide, 10-20% of graphite, 1-4% of ferroniobim, 5-8% of chrome powder, 1-2% of ferroboron, 4-6% of fluorite and 2-5% of aluminium-magnesium powder. Its external covering adopts low-carbon steel tape. Besides, said invention also provides its application method.

Description

technical field [0001] The invention relates to the field of material science and engineering, in particular to a surfacing flux-cored welding wire for remanufacturing large-scale special wear-resistant composite bimetallic parts. Background technique [0002] Large workpieces such as coal grinding rollers, bells (buckets) of blast furnace distributors, and various wear-resistant parts on sintering machines are manufactured through the smelting of molten iron, casting, heat treatment and simple processing of castings to form final products. In the manufacturing process of the above-mentioned large wear-resistant parts, not only a large amount of energy is consumed, but also the environment is seriously polluted. Large-scale wear-resistant parts are generally used under the conditions of high-stress abrasive wear and collision wear where the impact is not too strong. After a certain period of use, they are scrapped due to excessive surface wear. On the one hand, scrapped wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/02B23K9/04B22F1/00
Inventor 杨育林杨庆祥王青峰
Owner QINHUANGDAO WEIERDE SPECIAL WELDING IND
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