Novel corrosion resistant antiwear metallic material

A metal material and corrosion-resistant technology, applied in the field of new corrosion-resistant and wear-resistant metal materials, can solve the problems of low wear resistance, high cost of duplex steel, low hardness of duplex stainless steel, etc., and achieve comprehensive corrosion resistance and wear resistance. Increases, reduces production costs, and improves the effect of wear resistance

Inactive Publication Date: 2009-06-24
SHIJIAZHUANG IND PUMP FACTORY CO LTD
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Problems solved by technology

[0002] At present, in the corrosion and wear conditions, especially the wet corrosion and wear conditions in the electric power, chemical industry and other industries (mainly the pump flow parts in the desulfurization system of thermal power plants, such as circulating desulfurization pumps, the medium characteristics of thermal power plant desulfurization systems are

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  • Novel corrosion resistant antiwear metallic material
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Examples

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Embodiment Construction

[0018] The new type of corrosion-resistant and wear-resistant metal material is smelted in an intermediate frequency furnace. The process steps are: (1) After the detected content of scrap steel, pig iron and various ferroalloys are proportioned according to the content of the product, they are heated and smelted in sequence; (2) The temperature rises To 1520°C-1580°C, out of the furnace; (3) Resin sand molding, pouring temperature 1400°C-1450°C; (4) After the casting is cooled, remove the riser, flash, drape, etc.; (5) The casting is in the heat treatment furnace Machining is carried out after annealing treatment; (6) The casting is heated to 1000°C at a certain speed in the heat treatment furnace for air cooling treatment. The metallographic structure of the obtained novel corrosion-resistant and wear-resistant metal material is A+F+alloy carbide, and the hardness range is HRC25-32.

[0019] The chemical composition and hardness results of Examples 1-6 are shown in Table 1. ...

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Abstract

The invention discloses a novel corrosion-resistant anti-wear metallic material which has the components with the weight percentage of 0.3-1.2% of C, 20-30% of Cr, 1-2.5% of Si, 0.5-1.5% of Mn, 3-8% of Ni, 1-4% of Mo, 1-4% of Cu, less than or equal to 0.035% of P, less than or equal to 0.04% of S, and the rest of Fe. As the novel corrosion-resistant anti-wear metallic material properly increases the carbon content and is added with the right amount of alloying elements, so that material structure contains a certain amount of alloy carbide, and the anti-wear performance of the material is greatly improved. Although the static corrosion-resistant performance is slightly reduced, the comprehensive corrosion-resistant anti-wear performance is greatly improved. In addition, the novel corrosion-resistant anti-wear metallic material can be smelted in an intermediate frequency furnace and needs no concentrated feeding stuff. The production cost is reduced more than CD4M-Cu material.

Description

technical field [0001] The invention relates to a metal material, especially a novel corrosion-resistant and wear-resistant metal material with high carbon content. Background technique [0002] At present, in the corrosion and wear conditions, especially the wet corrosion and wear conditions in the electric power, chemical industry and other industries (mainly the pump flow parts in the desulfurization system of thermal power plants, such as circulating desulfurization pumps, the medium characteristics of thermal power plant desulfurization systems are: Contains a lot of Cl - , SO 4 2- , SO 3 2- Most of the materials used in corrosive ions such as limestone and solid particles such as limestone are duplex stainless steel, but duplex stainless steel has low wear resistance due to low hardness, and at the same time, the cost of duplex steel is relatively high. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a...

Claims

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Application Information

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IPC IPC(8): C22C38/44
Inventor 高纪平杜辉李春海
Owner SHIJIAZHUANG IND PUMP FACTORY CO LTD
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