| 易切削相组成、形态及面积份数对硫系易切削钢切削性能的影响 |
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| 引用本文： | 江来珠,崔昆.易切削相组成、形态及面积份数对硫系易切削钢切削性能的影响[J].机械工程学报,1993,29(2):58-62. |
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| 作者姓名： | 江来珠 崔昆 |
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| 作者单位： | 华中理工大学 |
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| 摘 要： | 研究了Ca、RE及Ca-RE变性后易切削相的组成、形态及面积份数对硫系易切削钢切削性能的影响。降低切削力的作用依MnS、（Mn、Ca）S、MnS-RE2S3及（Mn、Ca）S-RE2S3次序减弱，而减少后刀面磨损的作用按上述次序增强。易切削相形态的改善对前者不利，而对后者有利，面积份数的增加对两者都有利。
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| 关 键 词： | 表面粗糙度 磨损 切削力 切削性能 |
INFUENCE OF COMPOSITIN,SHAPE AND AREA FRACTION OF FREE-CUTTING PHASE ON MACHINABILITY OF SULFUR SYSTEM FREE-CUTTING STEEL |
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| Jiang Laizhu,Cui Kun.INFUENCE OF COMPOSITIN,SHAPE AND AREA FRACTION OF FREE-CUTTING PHASE ON MACHINABILITY OF SULFUR SYSTEM FREE-CUTTING STEEL[J].Chinese Journal of Mechanical Engineering,1993,29(2):58-62. |
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| Authors: | Jiang Laizhu Cui Kun |
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| Affiliation: | Huazhong University of Science and Technology |
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| Abstract: | In this paper the influence of composition, shape and area fraction of freecuffing phase modified by Ca, RE and Ca-RE on machinability of sulfur system free-cutting steel has been investigated. The role of free-cutting phases in decreasing cutting force lowers in the following order, MnS, (Mn, Ca)S, MnS-RE2S3 and (Mn, Ca)S-RE2S3, but that in decreasing flank wear increases in the above mentioned order The improvement of shape of free-cutting phase is defrimental to the former role, but helpful to the tatter role the increase of area fraction of free-cutting phase is helpful to both them. |
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| Keywords: | Cutting force Machinability Surface roughness Wear |
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