《浅谈常见热处理的缺陷及其影响》-毕业论文.docVIP

精品论文 第 PAGE 1页 三江学院 浅谈常见热处理的缺陷及其影响 摘要：热处理在机械制造整个工艺流程中，对产品质量好坏起着“承先启后”的关键作用。一些已接近成品的零部件，往往仅由于热处理不当而造成废品，使人力、物力、财力和时间遭受很大损失热处理质量的好坏涉及很多因素，虽然有不少热处理规范有章可循，但在很多情况下还没有摸清规律，仍然是“凭经验办事”。因此，使人很难在短期内对热处理的缺陷与过失做全面了解和掌握。本论文试图利用系统分析的思路和方法，对热处理的缺陷与过失作一整体而较全面的摘要式分析，分析产生各种缺陷与过失的原因。 【Abstract】 Heat treatment in the entire process in mechanical manufacturing，Good or bad product quality plays a continuity of the key role。Some parts have been close to finished，Often only the result of improper waste treatment，The human, material and financial resources and time suffer a great loss to their quality, heat treatment involves many factors，Although there are many rules to follow heat treatment specifications，However, in many cases do not find out the laws，Is still a work rule of thumb.Therefore, Make it difficult in the short term treatment of defects and errors to do a comprehensive understanding and knowledge of, This paper attempts to use ideas and methods of system analysis, Defects and faults of the heat treatment to make a more comprehensive summary of the overall and type analysis, Analysis yielded a variety of reasons for defects and faults. 关键字：表面热处理；淬火；渗碳；缺陷 目录 第1章 热处理的缺陷概述·······························3 1.1 热处理功能和产生缺陷的原因··················3 1.2 常见几种热处理缺陷··························3 第2章 热处理常见缺陷·································5 2.1 过热和过烧··································5 2.2 氧化和脱碳··································5 2.3 变形和开裂··································5 2.3.1 淬火冷却应力····························5 2.3.2 淬火冷却变形····························6 2.3.3 淬火冷却开裂····························6 2.3.4 减少变形、防止开裂措施················6 第3章 典型热处理缺陷分析······························9 3.1 分析裂纹原因及改进措施······················9 3.2 后轴轮断裂原因及改进措施·····················9 3.3渗碳件断裂原因及改进措施······················10 第4章 总结···········································12 参考资料···············································13 谢辞·