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Increased negative real low chromium cast iron foundry comprehensive performance study

Author: LiQiuLin
Tutor: LiuGenShengï¼›LinXiaoZuo
School: Hebei University of Technology
Course: Materials Processing Engineering
Keywords: EPC Suspension Casting Micro -cooled iron Chromite sand Iron pills Low chromium white cast iron
CLC: TG252
Type: Master's thesis
Year: 2000
Downloads: 100
Quote: 0
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Abstract


This paper describes the domestic production of wear-resistant material and casting grinding balls and the status of the development process , analyzes the adoption of EPC process to produce low- chromium cast iron causes of poor overall performance . In -depth analysis of the casting process is known as the 21st century the technical content -EPC method , based on the metal solidification and forming scientific basis for the theory put forward to improve the EPC production of low chromium white cast iron comprehensive performance scientific measures to study the use of special type material and the introduction of micro -cooled iron on low chromium white cast iron microstructure and properties of the impact of EPC technology in high wear resistance, toughness microspheres produced in the promotion and application provides a theoretical basis . The use of special types of materials to replace the conventional type material , can significantly improve the casting solidification characteristics , refine the organization , strengthening the matrix , improving low-chromium white cast iron carbide distribution patterns . With the conventional method of producing low-chromium white cast iron compared to significantly improve the mechanical properties and wear resistance , impact toughness increased 17.8% , hardness HRC2 ~ 3, the relative wear resistance is increased by 31% . Fill in advance EPS mold micro -cooled iron filling process micro -cooled iron evenly distributed in the mold , changing liquid metal solidification characteristics , refinement organizations, and some types of carbide micro- region occurred a qualitative change , more significantly improved EPC France low chromium white cast iron overall performance. With the conventional method of producing low-chromium white cast iron compared to significantly improve the mechanical properties and wear resistance , impact toughness increased by 24.5% , the hardness increases HRC4 ~ 4.5, the relative wear resistance is increased by 35%.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Casting > Iron casting > White cast iron castings
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