Transactions of Materials and Heat Treatment

Title：Evaluation of lubricating performance for hot forging lubricant based on optimized cone-forging method

Authors： Chen Lunqiang Zheng Juntao Zhuang Xiaowei Hu Chengliang Zhao Zhen

Unit： Shanghai Jiao Tong University Jiangsu Longcheng Precision Forging Co. Ltd.

KeyWords： cone-forging method lubricant lubricating performance height indicator load indicator hot forging viscosity

ClassificationCode：TG316

year,vol(issue):pagenumber：2018,43(1):154-159

Abstract：

The lubricating performance of four kinds of solid matrixes contents and different contents of water-based thermoformed lubricants were evaluated by the optimized cone-forging method, and the values of H-indicator and F-indicator reflecting the lubricating performance of lubricant at 950 ℃ and 1050 ℃ with the volume ratios of lubricant and water of 1∶60, 1∶20 and 1∶4.5 were obtained. The results show that the optimized cone-forging method can indicate different lubricating performances of lubricants under varied conditions, and the lubricating performances of lubricants with compound stearate to be the matrix are the best under different conditions with stable lubricating performance and good process suitability. However, the lubricating performances of lubricants with artificial graphite to be the matrix are generally poor. Therefore, when two kinds of lubricants with high solid content in stock solution are forged at 950 ℃, their lubricating performances increase with the concentrations of stock solution. The optimal volume ratio of two kinds of lubricants with non-scale graphite to be the matrix forged at 1050 ℃ is 1∶20. The greater the viscosity of lubricant stock solution is, the better the lubricating performance is.

Funds：

国家自然科学基金资助项目（51475294）

作者简介：陈伦强（1991-），男，硕士研究生，E-mail：chenlunqiang@sjtu.edu.cn；通讯作者：赵震（1972-），男，博士，教授，E-mail：zzhao@sjtu.edu.cn

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