• CN:11-2187/TH
  • ISSN:0577-6686

›› 2014, Vol. 50 ›› Issue (16): 119-125.

• 论文 • 上一篇    下一篇


贾 璐;李永堂;武永红;齐会萍   

  1. 太原科技大学材料科学与工程学院;太原科技大学金属材料成形理论与技术山西省重点实验室
  • 发布日期:2014-08-20

Research on the Temperature Parameters in Casting-rolling Continuously Forming of Ring Parts

JIA Lu; LI Yongtang; WU Yonghong; QI Huiping   

  1. 1. School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024; 2. Shanxi Key Laboratory of Metal Forming Theory and Technology, Taiyuan University of Science and Technology, Taiyuan 030024
  • Published:2014-08-20

摘要: 针对传统环件生产工序繁琐、材料和能源浪费较严重的现状,提出一种环形零件铸辗连续成形新生产工艺。根据理论分析、数值模拟与试验研究来确定生产工序中冶炼、浇注和运输工序中的温度参数:以42CrMo合金钢为研究对象,利用JMatPro软件模拟出合金相图,依据凝固过程相变情况及工业生产实际制定冶炼温度,冶炼温度为1 750 ℃;通过ProCAST软件对离心铸造过程进行模拟,分析铸造凝固过程中组织晶粒尺寸、温度变化及应力变化,确定浇注温度和出模温度,其中浇注温度为1 520 ℃、出模温度为1 050 ℃;运用高温热台试验研究动态组织晶粒变化过程,制定环件保温温度及保温时间,保温温度为1 000 ℃,保温时间为180 min。模拟结果与工业生产相符合,且热台试验显微镜下观察,经保温处理的试样组织均匀细小,满足热辗扩晶粒条件要求。

关键词: 铸辗连续成形;环件;42CrMo合金钢;温度参数;数值模拟;高温热台试验

Abstract: Based on the complicated process, caused seriously waste of material and energy in traditional production process of rings, the objective of this study is to put forward a new type of ring production process, casting-rolling continuously forming of rings, as well as the temperature of each process through theoretical analysis, numerical simulation and experimental research. 42CrMo alloy steel is used as the material of the rings, the phase diagram of 42CrMo steel alloy is made through JMatPro software. According to the solidification process of phase change and industrial production practice to accurate formulate the smelting temperature and the smelting temperature is 1 750 ℃. The pouring temperature and the mold stripping temperature of centrifugal casting are simulated by the numerical simulation of microstructure and analysis on process of setting on ProCAST software, which concentrates on grain size, temperature and stress variation during casting, the pouring temperature is 1 520 ℃ and the mold stripping temperature is 1 050 ℃. The hot stage experiment is employed to seek the change process of dynamic organization grain that accurate prediction the holding mold temperature and time, the temperature is 1 000 ℃ and the time is 180 min. The simulation result is consistent with industrial production, the hot stage microscope shows fine and homogeneous microstructure of the samples, meets the grain condition of hot rolling.

Key words: casting-rolling continuously forming;rings;42CrMo alloy steel;temperature parameter;numerical simulation;hot stage experiment