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Process for the production of steel rails with low residual stresses by means of roller straightening

机译：通过辊子矫直生产低残余应力的钢轨的方法

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The invention relates to a process for the production of steel rails with low residual stresses by means of roller straightening. Before entering the roller straightening machine, the rails, which have been cooled to below 100 DEG C following hot rolling, are heated in the rail web to 100-500 DEG C, preferably about 150-350 DEG C, and after straightening, cool to room temperature in air. This measure reduces the longitudinal tensile stresses in the rail head and foot to below 50 N/mm2 and thus increases the fracture resistance of the rail. While a rail straightened without heating of the web exhibits the characteristic a represented in Fig. 2 as regards its residual stresses, the considerably more advantageous characteristic b is established in the rail straightened in accordance with the invention. IMAGE

机译：本发明涉及一种通过辊矫直生产具有低残余应力的钢轨的方法。在进入辊矫直机之前，将热轧后已冷却至低于100℃的钢轨在钢轨腹板上加热至100-500℃，最好约为150-350℃，并在矫直后冷却至空气中的室温。该措施将轨道头和脚中的纵向拉伸应力减小到低于50 N / mm 2，从而增加了轨道的抗断裂性。在不加热腹板的情况下矫直的钢轨在残余应力方面表现出图2所示的特性a，而在根据本发明矫直的钢轨中则建立了更为有利的特性b。 <图像>

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公开/公告号DE3501522C1

专利类型
公开/公告日1986-04-03

原文格式PDF
申请/专利权人 KRUPP STAHL AG 4630 BOCHUM DE;
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申请/专利号DE19853501522
发明设计人 WEBER LUTZ DR.-ING. 4330 MUELHEIM DE;SCHWEITZER REINHARD DR.-ING. 4000 DUESSELDORF DE;FLUEGGE JUERGEN DR.-ING. 4100 DUISBURG DE;HELLER WILHELM DR.-ING.;
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申请日1985-01-18
分类号C21D9/04;
国家 DE
入库时间 2022-08-22 07:32:03

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