EXPANSION CRACK OF THE GREY IRON

CAI Xu-qin. EXPANSION CRACK OF THE GREY IRON[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2006, 42(7): 335-338.

Citation:

CAI Xu-qin. EXPANSION CRACK OF THE GREY IRON[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2006, 42(7): 335-338.

Citation:

CAI Xu-qin. EXPANSION CRACK OF THE GREY IRON[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2006, 42(7): 335-338.

Abstract

Metallographic examination and analysis are conducted for the cracks of different kind of grey iron. The results are showed, there are existing some thermal crack which caused by cubical-expansion. The relation between the macro-caracter, distribution position and microstructure of the crack of expension casting cracks are discussed in this paper. Furthmore, the formation mechanism of expansion crack and solving method are proposed.

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