渗碳方式对18CrNi4A钢齿轮渗层的影响
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摘要
对18CrNi4A钢齿轮试件分别采取可控气氛和低压真空两种方式进行渗碳,研究了渗碳方式对齿轮渗碳层组织的影响。结果表明,在齿高中部有效硬化层深度相近的情况下,与可控气氛渗碳相比,低压真空渗碳处理的齿根圆角处有效硬化层深度显著增加。采取低压真空渗碳处理的齿轮,渗层中碳化物呈细小、弥散分布,而传统可控气氛渗碳处理的齿轮碳化物较粗大。
18CrNi4A steel gear were treated by controlled atmosphere carburizing and low pressure vacuum carburizing,and effect of carburizing methods on microstructure was researched.The results show that the effective hardening depth of low pressure vacuum carburizing would be more deeper at the tooth root than that of controlled atmosphere carburizing in the case of the similar effective hardening layer in the middle height of tooth.Compared with the gear treated by controlled atmosphere carburizing,the size of carbide in the gear treated by low pressure vacuum carburizing is fine and disperse distribution.
18CrNi4A steel gear were treated by controlled atmosphere carburizing and low pressure vacuum carburizing,and effect of carburizing methods on microstructure was researched.The results show that the effective hardening depth of low pressure vacuum carburizing would be more deeper at the tooth root than that of controlled atmosphere carburizing in the case of the similar effective hardening layer in the middle height of tooth.Compared with the gear treated by controlled atmosphere carburizing,the size of carbide in the gear treated by low pressure vacuum carburizing is fine and disperse distribution.
引文
[1]包耳,田绍洁.真空热处理[M].沈阳:辽宁科学技术出版社,2009:124-128.
[2]何英介.金属材料的真空热处理[M].上海:上海科学技术出版社,1981:66-76.
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[4]樊玉福,王小琴.27Si Mn Mo V钢针阀体的低压真空渗碳[J].金属热处理,2001,26(1):41-42.Fan Yufu,Wang Xiaoqin.Low pressure vacuum carburizing for injector valve of 27Si Mn Mo V steel[J].Heat Treatment of Metals,2001,26(1):41-42.
[5]胡小丽,李城,贡伟瑾.新颖优质渗碳技术—真空低压乙炔渗碳[J].国外金属热处理,2000,21(6):12-14.
[6]赵家萍,李保成,张治民,等.变温低压渗碳技术研究[J].华北工学院学报,1999,20(4):360-362.
[7]赵连成.金属热处理原理[M].哈尔滨:哈尔滨工业大学出版社,1987:95-97.
[8]Daniel H Herring,Frederick J Otto.Low-pressure vacuum carburizing[J].Advanced Materials and Processes,2007,165(3):31-33.
[9]马森林,高文栋,沈玉明.ECM低压真空渗碳技术应用研究与探讨[J].汽车工艺与材料,2004(8):27-30.Ma Senlin,Gao Wendong,Shen Yuming.Application researches and discussion on ECM low pressure vacuum carburizing technology[J].Automobile Technology and Material,2004(8):27-30.
[2]何英介.金属材料的真空热处理[M].上海:上海科学技术出版社,1981:66-76.
[3]孙枫,佟小军,王广生.Cr17Ni2不锈钢低压真空渗碳工艺研究[J].金属热处理,2009,34(9):67-71.Sun Feng,Tong Xiaojun,Wang Guangsheng.Low pressure vaccum carburizing for Crl7Ni2 stainless steel[J].Heat Treatment of Metals,2009,34(9):67-71.
[4]樊玉福,王小琴.27Si Mn Mo V钢针阀体的低压真空渗碳[J].金属热处理,2001,26(1):41-42.Fan Yufu,Wang Xiaoqin.Low pressure vacuum carburizing for injector valve of 27Si Mn Mo V steel[J].Heat Treatment of Metals,2001,26(1):41-42.
[5]胡小丽,李城,贡伟瑾.新颖优质渗碳技术—真空低压乙炔渗碳[J].国外金属热处理,2000,21(6):12-14.
[6]赵家萍,李保成,张治民,等.变温低压渗碳技术研究[J].华北工学院学报,1999,20(4):360-362.
[7]赵连成.金属热处理原理[M].哈尔滨:哈尔滨工业大学出版社,1987:95-97.
[8]Daniel H Herring,Frederick J Otto.Low-pressure vacuum carburizing[J].Advanced Materials and Processes,2007,165(3):31-33.
[9]马森林,高文栋,沈玉明.ECM低压真空渗碳技术应用研究与探讨[J].汽车工艺与材料,2004(8):27-30.Ma Senlin,Gao Wendong,Shen Yuming.Application researches and discussion on ECM low pressure vacuum carburizing technology[J].Automobile Technology and Material,2004(8):27-30.