Development the Methods for Preventing Hot Cracking With Use Analysis of Temperature Fields

7th International Scientific Practical Conference "Innovative Technologies in Engineering"

Ol'Khovik, Evgeniy^1

Admiral Makarov State University of Maritime and Inland Shipping, Dvinskaya str.5/7, Saint-Petersburg, Russia^1

关键词: Developed model;    Geometric shape;    Hot cracking;    Hot cracks;    Stress strain state;    Temperature conditions;    Thermal condition;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/142/1/012084/pdf
DOI  :  10.1088/1757-899X/142/1/012084

来源: IOP

【 摘 要 】

The reasons for formation of hot cracks in steel castings having difficult geometric shape of a revolution body are discussed in the paper. Mathematical model for the calculation of metal castings solidification and analysis of temperature conditions, which determines the conditions of hot cracking formation are proposed. The advantage of developed model is ability to use only results of thermal analysis without special calculation of stress-strain state. Criteria for evaluating of thermal conditions for directional solidification and heat dissipation in mold is developed, what allowing to correct technology of casting for defects prevention.