• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 1993, Vol. 29 ›› Issue (2): 58-62.

• 论文 • 上一篇    下一篇

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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

江来珠;崔昆   

  1. 华中理工大学
  • 发布日期:1993-03-01

INFUENCE OF COMPOSITIN, SHAPE AND AREA FRACTION OF FREE-CUTTING PHASE ON MACHINABILITY OF SULFUR SYSTEM FREE-CUTTING STEEL

Jiang Laizhu;Cui Kun   

  1. Huazhong University of Science and Technology
  • Published:1993-03-01

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。

关键词: 表面粗糙度, 磨损, 切削力, 切削性能

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.

Key words: Cutting force, Machinability, Surface roughness, Wear

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