Bainite nodular graphite cast iron grinding ball
Title：
Bainite nodular graphite cast iron grinding ball
Application Number：
 96100468
Application Date：
 1996/02/02
Announcement Date：
 1996/10/29
Pub. Date：
 1999/03/24
Publication Number：
 1134468
Announcement Number：
 1042657
Grant Date：
Granted Pub. Date：
 1999-3-24
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C22C 37/04
Applicant(s)：
 Qinghua Univ.
Inventor(s)：
 Liang Ji, Gao Zhidong, Wei Bingqing
Key Words：
 Bainite, nodular graphite cast iron, grinding ball
Abstract：
 The present invention belongs to the field of metal material and the gringing ball has components of: C 3.4-3.8%, Si 2.5-3.5%, Mn 2.0-3.5%, Cr 0.1-1.0%, S less than 0.03%, P less than 0.1%, Mg 0.03-0.08%, Re 0.02-0.07%, and Fe the rest. Its heat treatment process include heating at 820-920 deg.C for 2-8 hr, quenching in the aqueous solution of sodium or potassium salt of pH value 9-14 and specific weight 1.05-1.8 and heating at 150-300 deg.C for 2-8 hr. The grinding ball of the present invention has good comprehensive performance.
Claim：
Priority：
PCT：
LegalStatus：

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