Optimisation of the Deoxidation Degree and Modification on the Cast Steel Properties Improvement at Low Temperature

Archives of Metallurgy and Materials

Z. Sierant¹ 

[1] METALODLEW S.A., UL. UJASTEK 1, 31-752 KRAKÓW, POLAND;

关键词: Keywords: stell castings;    minus temperature;    wall thickness;   

DOI  :  10.2478/amm-2013-0068

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Industrial conditions of obtaining thick-walled and shaped castings intended for operations at temperatures: minus 40÷60°C are presented in the paper. The selection of a cast steel grade is based on known studies [1,10,14], however due to castings wall thickness (70-240mm), the way of preparing liquid metal (deep deoxidation and modification, argon stirring in a ladle) and conditions of filling mould cavities (gating system assuring quiet filling, directional solidification and avoiding a formation of inessential heat centres), were developed to assure the required impact strength. Maintaining these parameters as well as the selection of heat treatments for the produced massive castings allowed to achieve the impact strength over 50 J/cm2 at minus 40°. This value was obtained for walls of various thickness

【 授权许可】

Unknown