Alloy material for incinerator fire grate and preparation method of alloy material

An alloy material and incinerator technology, which is applied in the field of special alloy material manufacturing and processing, achieves the effects of easy parameter control, easy control and low manufacturing cost

Inactive Publication Date: 2021-06-01
萍乡市长峻特种材料铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is to provide an alloy material for incinerator grate and its preparation method in view of the fact that the alloy material for manufacturing incinerator grate in the prior art cannot have excellent comprehensive performance and suitable manufacturing cost at the same time

Method used

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  • Alloy material for incinerator fire grate and preparation method of alloy material
  • Alloy material for incinerator fire grate and preparation method of alloy material
  • Alloy material for incinerator fire grate and preparation method of alloy material

Examples

Experimental program
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Effect test

Embodiment 1

[0041] An alloy material for an incinerator grate, the composition alloy elements include:

[0042] Carbon C 0.8%, Silicon Si 2.5%, Manganese Mn 0.9%, Chromium Cr 22%, Nickel Ni 3.5%, Molybdenum Mo 0.35%, Copper Cu 0.5%, Rare Earth Element RE 0.12%, Sulfur S 0.01%, Phosphorus P 0.02 %, nitrogen N 0.2%, strong carbide forming elements 0.25%, boron B 0.05%, aluminum Al 0.05%, the balance is iron Fe and other unavoidable impurities.

[0043] Low-carbon steel scrap, ferroalloy and pure nickel are sequentially added to an intermediate frequency induction furnace for smelting by weight percentage, with a neutral lining, and the smelting temperature is 1650°C. Baking is carried out before the iron alloy is added to remove moisture, and the temperature is kept between 200-300°C. During the melting process, an appropriate amount of flux is added to form slag and cover the molten steel. After the charge is melted, samples are taken for full analysis, and the composition is adjusted acc...

Embodiment 2

[0046] An alloy material for an incinerator grate, the composition alloy elements include:

[0047] Carbon C 0.8%, Silicon Si 2.2%, Manganese Mn 0.9%, Chromium Cr 22%, Nickel Ni 3.5%, Molybdenum Mo 0.35%, Copper Cu 0.5%, Rare Earth Element RE 0.12%, Sulfur S 0.01%, Phosphorus P 0.03 %, nitrogen N 0.2%, strong carbide forming elements 0.20%, boron B 0.03%, aluminum Al 0.03%, the balance is iron Fe and other unavoidable impurities.

[0048] Low-carbon steel scrap, ferroalloy and pure nickel are sequentially added to an intermediate frequency induction furnace for smelting by weight percentage, with a neutral lining, and the smelting temperature is 1620°C. Baking is carried out before the iron alloy is added to remove moisture, and the temperature is kept between 200-300°C. During the melting process, an appropriate amount of flux is added to form slag and cover the molten steel. After the charge is melted, samples are taken for full analysis, and the composition is adjusted acc...

Embodiment 3

[0050] An alloy material for an incinerator grate, the composition alloy elements include:

[0051] Carbon C 0.9%, Silicon Si 2.8%, Manganese Mn 0.9%, Chromium Cr 22%, Nickel Ni 3.5%, Molybdenum Mo 0.35%, Copper Cu 0.6%, Rare Earth Element RE 0.10%, Sulfur S 0.02%, Phosphorus P 0.02 %, nitrogen N 0.2%, strong carbide forming elements 0.15%, boron B 0.05%, aluminum Al 0.05%, the balance is iron Fe and other unavoidable impurities.

[0052] Low-carbon steel scrap, ferroalloy and pure nickel are sequentially added to an intermediate frequency induction furnace for smelting by weight percentage, with a neutral lining, and the smelting temperature is 1640°C. Baking is carried out before the iron alloy is added to remove moisture, and the temperature is kept between 200-300°C. During the melting process, an appropriate amount of flux is added to form slag and cover the molten steel. After the charge is melted, samples are taken for full analysis, and the composition is adjusted acc...

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Abstract

The invention provides an alloy material for an incinerator fire grate and a preparation method of the alloy material, and belongs to the field of manufacturing and processing of special alloy materials. The alloy material for the incinerator fire grate comprises the following alloy elements in percentage by weight: 0.15 percent to 1.5 percent of carbon C, 2 percent to 3 percent of silicon Si, 0.6 percent to 1.5 percent of manganese Mn, 18 percent to 29 percent of chromium Cr, 2.5 percent to 4.0 percent of nickel Ni, 0.15 percent to 0.45 percent of molybdenum Mo, 0.1 percent to 0.8 percent of copper Cu, 0.05 percent to 0.20 percent of rare earth element RE, less than or equal to 0.03 percent of sulfur S, less than or equal to 0.04 percent of phosphorus P, 0.1 percent to 0.3 percent of nitrogen N, 0.05 percent 0.40 percent of strong carbide forming element, 0.04 percent to 0.06 percent of boron B, 0.04 percent to 0.06 percent of aluminum Al, and the balance of ferrum Fe and other inevitable impurities. The alloy material for the fire grate provided by the invention has the characteristics of high temperature resistance, corrosion resistance, carbonization resistance, wear resistance and the like, is simple in process, long in service life and good in comprehensive performance, is very suitable for materials for fire grates of large municipal solid waste incinerators in China, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of manufacturing and processing of special alloy materials, and in particular relates to an alloy material for an incinerator grate and a preparation method thereof. Background technique [0002] The mechanical grate incinerator is one of the most widely used municipal waste treatment equipment in the world today, and the incinerator grate is the main wear-resistant and vulnerable part of the equipment. The quality of the grate and its service life affect the use and economic effect of the incineration equipment, and it is a key research and manufacture component of the equipment manufacturer. [0003] The working conditions of the incinerator grate are very harsh: the solid or liquid (leachate) waste carried by the grate often contains acid, alkali, corrosion, and toxic substances; ℃, and the flue gas contains nitrogen oxides, sulfides, CO, HCl, various organic gases, dioxins, Hg and other heavy metal harmful substa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/54C22C33/04
CPCC22C33/04C22C38/001C22C38/005C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/54
Inventor 何长寿叶毅松
Owner 萍乡市长峻特种材料铸造有限公司
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