Heat processing technology method of austenitic ductile iron wear-resistant casting

A process method, austerite technology, applied in the field of material processing, can solve the problems of unfavorable environment and high production cost, and achieve the effects of reducing production cost, fast cooling speed and high hardness

Inactive Publication Date: 2015-11-04
NINGGUO HUAFENG WEAR RESISTANT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology solves problems with traditional methods for producing strong steel by replacing some or all of its constituents through an alloy called ferroaluminum (FeAl). By substituting certain elements like nickel instead of chloride into FeAL2O3, this method prevents harmful environmental concerns while also reducing costs compared to other ways such as making stronger materials. Additionally, it allows for faster thermal processing temperatures during the manufacturing cycle due to slow down rates caused by forming films onto surfaces when adding Nitrogen Gas before melting them together. These technical benefits include improved strength without causing damage to the atmosphere, reduced energy consumption, increased productivity, longer life span, less expensive raw material usage, better quality control over final products made therefrom, etc

Problems solved by technology

The technical problem addressed by this patented technology relating to an austenotic ductility iron alloy is its poor performance due to environmental factors like acid rain during use over long periods without being able to maintain their quality for optimal functioning when exposed to harsh environments.

Method used

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Embodiment Construction

[0012] The heat treatment process is the key technology in the production process of the austeric ductile iron wear-resistant casting. The present invention uses a water-soluble quenching agent to carry out isothermal quenching treatment on the wear-resistant casting. Heating in a resistance furnace to 850°C-920°C, keeping it warm for 1-1.5 hours, then quickly quenching into a water-soluble quenching agent solution at a temperature of 40-60°C for 2-3 minutes, the water-soluble quenching agent consists of the following mass percentages Composition: Polyether 30%, Triethanolamine 6%, Industrial Sodium Silicate 15%, CaCl 2 10%, the balance water, wherein the molecular weight of the polyether is 40000-50000. After quenching, the surface temperature of the ausferitic ductile iron wear-resistant casting is controlled at 200-260°C. After the above-mentioned ausferitic ductile iron wear-resistant casting is taken out, it is immediately sent to the tempering furnace for isothermal temperi

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Abstract

The invention relates to a heat processing technology method of an austenitic ductile iron wear-resistant casting. The austenitic ductile iron wear-resistant casting is subjected to quenching processing, and the quenching processing comprises the following steps: the casting which is subjected to machining is heated to 850 DEG C-920 DEG C inside a bogie-hearth resistance furnace; thermal insulation is carried out for 1-1.5 hours; the casting is rapidly quenched into a water-soluble quenching liquid of which the temperature is 40-60 DEG C for 2-3 minutes; after quenching, the surface temperature of the austenitic ductile iron wear-resistant casting is controlled between 200 DEG C and 260 DEG C; the casting is taken out and is immediately sent into a tempering furnace for isothermal tempering processing to obtain the austenitic ductile iron wear-resistant casting, wherein the isothermal tempering temperature is controlled between 240 DEG C and 300 DEG C, and the isothermal tempering time is 2-3 hours. According to the heat processing technology method of the austenitic ductile iron wear-resistant casting, the cooling speed is high at a high-temperature phase over 400 DEG C; the cooling speed is low at a low-temperature phase below 400 DEG C; the performance of the wear-resistant casting is improved; the production cost is reduced; and the pollution to an atmospheric environment is avoided.

Description

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Claims

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Application Information

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Owner NINGGUO HUAFENG WEAR RESISTANT MATERIAL
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