Emissivity Calibration and Temperature Measurement of High Strength Steel Sheet in Hot Stamping Process
(0) In order to meet the requirements of improving hot stamping process, the temperature distribution of high strength steel (HSS) sheets should be observed. However, the accurate measurement of temperature field in transfer where the temperature falls rapidly proves to be difficult due to the limitation of thermocouple. The infrared thermography could be used for accurate measurement of temperature field but the emissivity which is crucial to the accuracy and reliability of measurement results is not available. In this paper, a method to calibrate emissivity of HSS blank was developed for temperature measurement in hot stamping using infrared thermography. Experiments were performed on the emissivity calibration of the HSS Advanced 1500 in hot stamping. Emissivity dependence on temperature was investigated, so was the impact of little variation in emissivity on the temperature measurement. The validation tests were made and the results reveal that this calibration method of emissivity is accurate and feasible. This method is also appropriate for the calibration of emissivity in other temperature measurement situations.
Emissivity Calibration Temperature measurement High strength steel Hot stamping Infrared thermography
Hongqing Li Yisheng Zhang Liang Wang Xiaowei Tian Chao Wang Bin Zhu
State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science & Technology, Luoyu Road, Wuhan, Hubei, 430074,China
国际会议
大连
英文
1473-1477
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）