Keywords: Quenching medium, cooling performance, test methods, oil-based quenching medium, water-based quenching medium, standard, determination, industrial, quenching oil, nickel alloy,

test method for cooling performance of quenching medium
　　JB/T7951 -1999 "Test Method for Cooling Performance of Quenching Medium" is applicable to both oil-based quenching medium and water-based quenching medium, but this standard has been replaced by TB/T7951-2004, introduction ISO9950:1995 the contents of the standard "nickel alloy probe test method for determining the cooling performance of industrial quenching oil.

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