Study on Heat Treatment Technology of Overtemperature Quenching and Low Temperature Tempering 20Cr13 Forged Peeling Teeth
Taking 20Cr13 stainless steel forged peeling teeth as research object,compared with the traditional heat treatment process,a heat treatment process method of over temperature quenching and low temperature tempering was put forward.The results show that the hardness of the peeled teeth is obtained in the range of 48.0-49.5 HRC in a salt bath furnace.Compared with the same condition of quenching and heating to 1000℃,the hardness value of peeled teeth is incr eased by 5.3%.Metallographic structure is low temperature tempered martensite and residual austenite,which m eets the safety hardness value requirement of 47-51 HRC.The hardness range of peeling teeth is 47.5-51.0 HRC,and the metallogra-phic structure is both low temperature tempered martensite and retained austenite.The actual working environment proves that the peeling teeth meets the hardness requirement of safety work.
peeling teeth20Cr13overtemperature quenchinglow temperature temperinghardness
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