毕业论文移动版

摘要随着切削技术的发展，对难加工材料的切削提出了更高要求，实际切削加工过程非常困难，切削后的表面质量更是我们所关心的。因此，对切削后的表面应力，表面温度的研究有重要的意义。镍基高温合金也属于难加工材料。本文论述了镍基合金的应用背景、发展现状，对难加工材料的特点、切削性能及切削后工件及刀具的温度进行了归纳和总结。为了研究难加工材料切削后的性能及锯齿状切屑的特点，本文针对镍基高温合金GH4169，通过ABAQUS有限元仿真软件对其进行车削仿真，改变切削速度、背吃刀量、刀具前角三个因素，得到了各种不同切削条件下加工表面的应力、残余应力分布，以及切削形成锯齿形切屑的齿距、锯齿化程度与各因素之间的关系，并以图形表示出来，对以后的加工有指导意义。49804

毕业论文关键词：难加工材料；镍基合金（HG4169）；锯齿形切削；残余应力；ABAQUS； 

Abstract With the development of cutting technology for cutting difficult materials put forward higher requirements, the actual cutting process is very difficult, even after cutting the surface quality is our concern. Thus, after the cutting surface stress, the surface temperature of study has important significance. Nickel-base superalloy also belong to difficult materials. This paper discusses the application of nickel-based alloys background, development status, on the characteristics of difficult materials, cutting and the cutting tool and the workpiece temperature and summarized. In order to study after cutting difficult materials properties and characteristics of serrated chip, this paper nickel-based superalloy GH4169, ABAQUS finite element simulation software through its turning simulation, changing the cutting speed, depth of cut, rake angle three factor, to obtain a variety of different cutting conditions of the machined surface stress, the residual stress distribution, and the chip formed by cutting pitch serrated, jagged degree of relationship between the factors and graphically represented, for subsequent processing guiding significance.

Key words: Difficult processing materials; Nickel-based alloy (HG4169); The serrated cutting; Residual stress; ABAQUS;

目录

第一章  绪论 1

1.1  概述 1

1.2  难加工材料简介 1

1.2.1 难加工材料 1

1.2.2 难加工材料的切削特点 1

1.2.3 车削时应注意的问题 2

1.3 有限元法在切削加工过程中的应用 2

1.3.1 有限元法的国内外发展现状 2

1.3.2 有限元法优点 3

1.3.3 切削加工过程中有限元分析的解题思路 3

1.4论文内容简介 4

第二章 镍基高温合金GH4169 5

2.1 概述 5

2.2镍基高温合金 5

2.2.1 镍基高温合金分类 5

2.2.2 镍基高温合金的切削性能 5

2.3 GH4169镍基高温合金的化学成分及物理性能 6

2.3.1 GH4169概述 6

2.3.2 GH4169物理性能 6

2.4 GH4169工艺性能与要求 7

第三章  基于ABAQUS的GH4169切削仿真 (责任编辑：qin)