Experimental Quantification of Critical Parameters for Prediction of Surface Crack Formation in Continuous Casting,Steel Research International

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Experimental Quantification of Critical Parameters for Prediction of Surface Crack Formation in Continuous Casting
Steel Research International ( IF 1.9 ) Pub Date : 2020-07-07 , DOI: 10.1002/srin.202000234
Roman Krobath ₁ , Christian Bernhard ₁

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One possibility for the off‐line training of quality prediction modules in continuous casting is the performance of experiments with samples simulating conditions close to the process. An important point is the surface quality. In the last decade, a new testing setup has been developed called the in situ material characterization by bending (IMC‐B) test. This test represents an experimental method, combining solidification, cooling, and deformation in one sequence. It allows the prediction of surface crack formation with respect to the testing conditions. Varying testing parameters enable the determination of the impact of different factors that lead to crack formation during deformation of a casted sample in a hot bending test. The output comprises quantification parameters for damage evaluation, by defining a critical strain for crack formation. Herein, the crack sensitivity for a low carbon construction steel at the bending temperatures of 700–1100 °C is determined. The most critical temperature range is found to be 850–1000 °C.

中文翻译：

预测连铸表面裂纹形成的关键参数的实验量化

在连铸过程中离线训练质量预测模块的一种可能性是通过模拟接近过程的样品进行实验。重要的是表面质量。在过去的十年中，开发了一种新的测试设置，称为通过弯曲进行原位材料表征（IMC-B）测试。该测试代表了一种将凝固，冷却和变形相结合的实验方法。它可以根据测试条件预测表面裂纹的形成。不同的测试参数可以确定导致热弯曲测试中铸造样品变形期间导致裂纹形成的不同因素的影响。通过定义裂纹形成的临界应变，输出包括用于损伤评估的量化参数。在此，确定了低碳建筑钢在700–1100°C弯曲温度下的裂纹敏感性。发现最关键的温度范围是850–1000°C。

更新日期：2020-07-07

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