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High-temperature oxidation resistant grate piece and casting mould and technique thereof

A technology of high-temperature oxidation resistance and grate pieces, which is applied in the direction of manufacturing tools, metal processing equipment, casting molding equipment, etc., can solve the problems of oxidation corrosion, large loss, etc., achieve enhanced anti-oxidation performance, improve temperature resistance, and ensure wear resistance performance effect

Active Publication Date: 2017-10-17
国润环保工程(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when used in an incinerator, the grate will still be oxidized and corroded if it works for 2-3 months in a high-temperature environment, and the incinerator needs to be shut down for replacement, resulting in large losses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A high-temperature wear-resistant grate, made of iron-based alloy material, the iron-based alloy material includes the following substances in weight percentage: C: 0.2%; Si: 1.31%; Mn: 0.71%; Cr: 28%; Ni: 5.8 %; Mo: 0.22%; Sc: 0.012%; P: 0.018%;

Embodiment 2

[0039] A high-temperature wear-resistant fire grate, made of iron-based alloy material, the iron-based alloy material includes the following substances in weight percentage: C: 0.34%; Si: 0.48%; Mn: 1.13%; Cr: 24%; Ni: 4.1 %; Mo: 0.41%; Sc: 0.01%; P: 0.028%; S: 0.025%;

Embodiment 3

[0041] A high-temperature wear-resistant grate piece, made of iron-based alloy material, the iron-based alloy material includes the following substances in weight percentage: C: 0.46%; Si: 1.5%; Mn: 1.34%; Cr: 24.5%; Ni: 4 %; Mo: 0.15%; Sc: 0.016%; P: 0.04%; S: 0.039%;

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PUM

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Abstract

The invention discloses a high-temperature oxidation resistant grate piece made of a high-temperature oxidation resistant iron alloy. The high-temperature oxidation resistant iron alloy comprises the following substances, by weight, of 0.2%-0.5% of C, 1.5% or the less of Si, 1.5% or the less of Mn, 24%-28% of Cr, 4%-6% of Ni, 0.5% or the less of Mo, 0.01%-0.02% of Sc, 0.04% or the less of P, 0.04% or the less of S and the balance Fe and has the advantages of high-temperature oxidation resistance and long service life under the high-temperature condition. The invention further discloses a casting mould and technique of the grate piece. The grate piece made through the casting mould and technique is stable and balanced in performance and long in service life.

Description

technical field [0001] The invention relates to a fire grate, in particular to a high-temperature-resistant oxidation fire grate, a casting mold and a casting process thereof. Background technique [0002] At present, urban waste disposal has become a serious problem faced by cities in our country. Our country's urban domestic waste has the characteristics of high moisture and low calorific value. According to the current situation of my country's waste, mechanical reciprocating grate incinerator is currently the most suitable for my country's urban domestic waste incineration. Processing equipment; in the mechanical reciprocating grate incinerator, the grate is used as a part to push the garbage and make it fully combustible. During use, the environment of the grate has a certain amount of oxygen for combustion, and the temperature is usually at Above 700°C, under high temperature conditions, the metal is prone to oxidation and corrosion, which affects the service life of the...

Claims

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Application Information

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IPC IPC(8): C22C38/44C22C38/02C22C38/04B22C9/22B22C9/06B22C9/08
CPCB22C9/068B22C9/088B22C9/22C22C38/005C22C38/02C22C38/04C22C38/44
Inventor 朱青
Owner 国润环保工程(常州)有限公司
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