Study on the Boundary Phenomena in Rolling by the Measurement of Stress and Temperature on a Roll Surface

轧辊表面应力和温度测量研究轧制边界现象

• 批准号: 62550089
• 负责人: HATAMURA Yotaro
• 金额: $ 1.34万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550089/
• 关键词: Forming; Rolling; Pressure; Friction; Temperature; Heat Flux; Stress Sensor; 測定; 温度センサ

In order to elucidate mechanical and thermal phenomena on the boundary surface in rolling, actual stress and temperature have been measured using a stress sensor which can detect both pressure and frictional stress acting on a roll surface and using a temperature sensor which can detect surface temperature and heat flux developed by the authors.Frictional stress in the rolling direction is almost constant from the entrance to the neutral point in the contacting arc, both in strip rolling and billet rolling. The directions of the frictional stresses on the contacting surface agree with the directions of the gradients of pressure distribution in strip rolling. In billet rolling, frictional stress in the width direction increases in the later part of the contacting arc. This may be related with the three dimensional metal flow into the width direction.Surface temperature and heat flux are calculated from the two temperatures measured by the temperature sensor using the reverse calculation method for one-dimensional unsteady thermal conduction. Accuracy of this calculation method has been confirmed. Distribution of the heat generation along the contacting arc can be estimated in strip rolling from the surface temperature and heat flux measured by the temperature sensor. Therefore thermal mechanical phenomena can be investigated using the temperature sensor.

为了在滚动中阐明边界表面上的机械和热现象，已经使用应力传感器测量了实际的应力和温度，该压力传感器可以检测到在滚动表面上作用的压力和摩擦力压力，并使用可以检测到作者在滚动范围内的滚动方向在滚动方向上几乎不变的滚动和滚动的温度传感器。接触表面上摩擦应力的方向与带状滚动压力分布的梯度的方向一致。在钢坯滚动中，接触弧的后期，宽度方向上的摩擦应力增加。这可能与三维金属流向宽度方向相关。表面温度和热通量是根据温度传感器测得的两个温度来计算的，使用反向计算方法对一维不稳定的热传导进行了反向计算方法。该计算方法的准确性已得到证实。可以根据温度传感器测量的表面温度和热通量来估算沿接触弧的热量分布。因此，可以使用温度传感器研究热机械现象。

项目成果

Yotaro,HATAMURA;Takesi,YONEYAMA: JSME International Journal,SeriesIII. 31. 465-469 (1988)

Yotaro，HATAMURA；Takesi，YONEYAMA：JSME 国际期刊，系列III。

畑村洋太郎、米山猛: 日本機械学会論文集(C編). 53. 2392-2395 (1987)

Yotaro Hatamura、Takeshi Yoneyama：日本机械工程师学会会议记录（ed. C）53. 2392-2395 (1987)。

Yotaro HATAMURA.;Takeshi YONEYAMA.: JSME International Journal,Series III.31. 465-469 (1988)

Yotaro HATAMURA.；Takeshi YONEYAMA.：JSME 国际期刊，系列 III.31。

Takeshi,YONEYAMA;Yotaro,HATAMURA: JSME International Journal,SeriesIII. 32. (1989)

Takeshi，YONEYAMA；Yotaro，HATAMURA：JSME 国际期刊，系列III。

畑村 洋太郎: 日本機械学会論文集(C編). 53. 2392-2395 (1987)

Yotaro Hatamura：日本机械工程师学会会议记录（ed. C） 53. 2392-2395 (1987)。