在基于不同卷接触计算方法的板块连续造过程中固化热传递的研究
Daiwei Liu1,2, Guifang Zhang1, Jianhua Zeng3
1Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
Materials (Basel, Switzerland)
|January 26, 2024
概括
真实滚动接触 (R.方法) 和等效滚动接触 (E.方法) 方法影响连续造中的传热预测. 对于预测固化末端位置和柔软区域长度而言,R.方法更准确.
科学领域:
- 材料科学 材料科学 材料科学
- 金工程 金工程 金工程
- 热传递是一种热传递.
背景情况:
- 卷轴接触在连续造过程中显著影响了板块的热传递.
- 不同的滚动接触计算方法对传热预测的影响仍未得到研究.
研究的目的:
- 调查真实滚动接触 (R.方法) 和等效滚动接触 (E.方法) 对宽厚板材的热传输预测的影响.
- 为了比较这两种方法在预测板块表面温度,柔软区域长度和固化末端位置方面的准确性.
主要方法:
- 为宽厚板块固化开发了一个2D传热模型.
- 该模型使用了真实滚动接触 (R.方法) 和等效滚动接触 (E.方法).
- 模型预测与红外摄像头 (表面温度) 和钉子射击 (外厚度) 实验数据进行了验证.
主要成果:
- 这两种方法都能准确地预测板块表面温度,当忽略短暂的温度下降时.
- 相当的滚动接触 (E. 方法) 在预测柔软区域长度和固化末端位置方面显示出显著的偏差.
- 与R.方法相比,E.方法高估了柔软区域的长度,并延迟了固化末端位置.
结论:
- 真实滚动接触方法 (R.方法) 在宽厚板块连续造中提供了更准确的预测,用于柔软区域的长度和固化末端位置.
- 相当的滚动接触方法 (E. 方法) 适用于表面温度预测,但对内部固化参数不太适合.
- 精确选择卷接触模型对于连续造中精确的热传递分析至关重要.
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