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通过对测温系统和热防护层的研究,最终开发出了尺寸仅为220mm×240mm×260mm(高×宽×长)的黑匣子高温测试仪,并对GCr15轴承钢方坯(150mm×150mm)加热过程进行了温度测试。采用MSC Marc有限元软件建立了钢坯加热过程的三维温度场模型,并通过正交试验设计与有限元模拟相结合的方法实现了小断面轴承钢钢坯的加热工艺优化。经现场应用后,轴承钢钢坯加热最大断面温差降为32.75℃,加热均匀性有所提高,头尾性能差异性显著降低。
Through the research on the temperature measurement system and the thermal protection layer, a black box high temperature tester with a size of only 220mm × 240mm × 260mm (height × width × length) was developed and the GCr15 bearing steel billet (150mm × 150mm) was heated The process was temperature tested. The three-dimensional temperature field model of billet heating process was established by using MSC Marc finite element software. The optimization of heating process of billet of small section bearing steel was realized by the combination of orthogonal experimental design and finite element simulation. After field application, the temperature difference of the maximum section of bearing steel billet is reduced to 32.75 ℃, the uniformity of heating is improved, and the difference of head and tail performance is significantly reduced.