Force reduction in bending of thick steel plates by localized preheating
Force reduction in bending of thick steel plates by localized preheating
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DOI：
10.1016/s0007-8506(07)60406-5
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发表时间：
2006-01-01
影响因子：
4.1
通讯作者：
Aerens, R.
中科院分区：
文献类型：
--
作者：
Duflou, J. R.;Aerens, R.
可以观察到适合加工厚板的更高吨位折弯机的趋势。本文提出了一种仅限于弯曲区域的厚钢板预热的动态方法，有助于在显着降低总力的情况下进行弯曲。因此，动态加热方法允许显着扩展折弯机的工艺窗口。该方法在低碳钢板上进行了实验测试，其特点是需要相对较高的温升才能实现良好的屈服行为。描述了为此目的开发的原型设置。报告的测试结果包括可实现的温度分布、作为温度函数的力测量和回弹测量。派生的仿真模型可以将结果外推到更高厚度的板。
A trend towards higher tonnage press brakes, suitable for processing thick plates, can be observed. In this paper a dynamic method for preheating of thick steel plates, limited to the bending area, is presented, facilitating bending with a significantly reduced total force. The dynamic heating method thus allows to substantially extend the process window of press brakes. The method was experimentally tested on low carbon steel plates, characterised by a relatively high required temperature rise in order to achieve a favourable yield behaviour. A prototype setup developed for this purpose is described. Reported test results include achievable temperature distributions, force measurements as a function of temperature and spring back measurements. A derived simulation model allows to extrapolate the results to higher thickness plates.