机械专业外文翻译--一种材料的可机加工性
11页1、 毕业设计(论文)外文译文院 (系): 专 业: 机械设计制造及其自动化 姓 名: 学 号: 指导教师评语: 签名: 年 月 日外语文献翻译摘自: 制造工程与技术(机加工)(英文版) Manufacturing Engineering and TechnologyMachining 机械工业出版社 2004年3月第1版 美 s. 卡尔帕基安(Serope kalpakjian) s.r 施密德(Steven R.Schmid) 著原文:20.9 MACHINABILITYThe machinability of a material usually defined in terms of four factors:1、 Surface finish and integrity of the machined part;2、 Tool life obtained;3、 Force and power requirements;4、 Chip control. Thus, good machinability good surface finish and integrity, long
2、tool life, and low force And power requirements. As for chip control, long and thin (stringy) cured chips, if not broken up, can severely interfere with the cutting operation by becoming entangled in the cutting zone.Because of the complex nature of cutting operations, it is difficult to establish relationships that quantitatively define the machinability of a material. In manufacturing plants, tool life and surface roughness are generally considered to be the most important factors in machinabi
3、lity. Although not used much any more, approximate machinability ratings are available in the example below.20.9.1 Machinability Of SteelsBecause steels are among the most important engineering materials (as noted in Chapter 5), their machinability has been studied extensively. The machinability of steels has been mainly improved by adding lead and sulfur to obtain so-called free-machining steels.Resulfurized and Rephosphorized steels. Sulfur in steels forms manganese sulfide inclusions (second-
4、phase particles), which act as stress raisers in the primary shear zone. As a result, the chips produced break up easily and are small; this improves machinability. The size, shape, distribution, and concentration of these inclusions significantly influence machinability. Elements such as tellurium and selenium, which are both chemically similar to sulfur, act as inclusion modifiers in resulfurized steels.Phosphorus in steels has two major effects. It strengthens the ferrite, causing increased h
《机械专业外文翻译--一种材料的可机加工性》由会员博****1分享,可在线阅读,更多相关《机械专业外文翻译--一种材料的可机加工性》请在金锄头文库上搜索。
有关建议书作文600字集合5篇.doc
金融系统五四演讲稿:传承五四精神争当岗位先锋精选WORD.docx
星创天地建设基本信息表、信息汇总表、实施方案
口腔医院可行性工作报告
2021形式合同(3篇).docx
2021上海市黄浦区高三语文一模作文
初中语文教学措施计划
英语角活动策划.docx
2021县司法局干部管理监督责任制度落实情况自查报告.docx
新型基础设施建设行动计划
对于幼儿园小班评语.docx
编导自我介绍范文2023.doc
水稳试验路段方案
XXXX年度建设矿井防治水计划
2021年月大学生超市实习报告.docx
2022年特种作业人员管理制度范文
大型餐饮集团日常管理制度汇总
二年级语文下期教学计划范本(二篇).doc
真空断路器常见故障及处理方法
大班班主任个人工作总结范文(二篇).doc
2023-08-31 10页
2023-01-06 6页
2023-06-29 27页
2023-02-07 13页
2023-02-21 20页
2023-09-11 14页
2023-02-19 5页
2023-03-07 13页
2023-04-10 8页
2023-06-27 24页