Cooling Ability Evaluation of PAG Quenchants by Visualization Analysis
In this research, the performance and movement of bubbles in boiling film during quenching process were investigated with high-speed video camera and PIV technology as means of visualization method. Cooling curves of surface temperature during quenching of a silver cylinder based on JIS-B and modified types are measured and the heat transfer coefficients between quenchants and the silver probe are identified. The evaluation of the cooling ability of the quenchant used for the quenching technology relates to the quality control in the machine part. As for this paper, the cooling capacity of the PAG quenchants(polymer solution) is evaluated. In addition, the heat transfer behavior in quenching process is clarified more than making of generation and the destruction of the thermal flow and destruction of the steam film by using the PIV method of visualization. Effect of mechanical stirring of quenchants on steam film and heat transfer is studied.
Heat treatment PAG quenchants Thermal flow Film boiling Visualization PIV
Hiroyuki Yahagi Dong-Ying Ju Hideo Yokota Yuki Tazika Yasunori Kumakura
Department of Materials Science and Engineering, Graduate School of Science and Engineering,Saitama Department of Lubricants Research Central Technical Research Laboratory,Nippon Oil Corporation,Tokyo Department of Materials Science and Engineering,Graduate School of Science and Engineering,Saitama I
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
419-424
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）