论文部分内容阅读
锻模钢的磨损、过热、氧化层的形成、附着作用、疲劳破坏抗力等都取决于表面层的成份、组织和性能。如果表面层与基本金属的结合很可靠,同时具有较大的热稳定性、氧化稳定性、硬度等就能使表面层的质量得到改善和延长工具的使用寿命。用化学热处理来改变表面的化学成份和组织状态可以使锻模表面达到要求的使用性能。在工具生产中,渗碳、碳氮共渗、氮化、渗铬、渗硅,渗铬硅和渗硼、渗铝等的应用已取得一定的经验,并研制了新成份的复盖层和复盖层形成的方法。本文目的是研究在高温时扩散复盖成份对工具钢的氧化性能的影响。在锻模的腐蚀破坏中,氧化的形成过程起着决定的作用。
Forging die steel wear and tear, overheating, the formation of oxide layer, adhesion, fatigue resistance and other damage depends on the composition of the surface layer, texture and performance. If the surface layer and the combination of basic metals is reliable, with greater thermal stability, oxidation stability, hardness, etc. can make the surface layer of the quality is improved and extend the life of the tool. Chemical heat treatment to change the chemical composition of the surface and the state of the surface of the forging die can achieve the desired performance. In the production of tools, some experience has been gained in the application of carburizing, carbonitriding, nitriding, chromizing, siliconizing, chromizing silicon, boronizing and aluminizing etc. The coverings of new compositions and Cover the formation of the method. The purpose of this paper is to investigate the effect of diffusion coverage on the oxidation behavior of tool steels at elevated temperatures. Corrosion in the forging damage, the formation of oxidation plays a decisive role.