Simulation analysis of thermal stress during casting process of large-sized alloy steel ingot

Abstract

To quantitatively analyze the main reasons of common crack in the surface of alloy steel ingot with 5%Cr during production and to propose the direction of improvement, a physical model system, which consisted of steel ingot mold, casting, riser of heat insulation, slag layer, sprue pipe, and runner, was primarily established by three-dimensional CAD software. The joint simulation method concerned with pouring, solidification, temperature field, and cast stress was determined by using ADSTEFAN cast simulation software. The stress distribution of casting and the quantitative effect of shake-out timing were analyzed in detail. An effective plan of decreasing stress was proposed in cooling mode.

Keywords

alloy steel / solidification / thermal stress / crack

References

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Acknowledgements

This work was supported by the National Science Support Project founded by the Ministry of Science and Technology of the People's Republic of China (Grant No.2007BAE51B04).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg