保护气氛陶瓷辊棒辊底炉支撑座的优化设计

Optimization design of support block of protective atmosphere roller hearth furnace

分析了保护气氛陶瓷辊棒辊底炉支撑座温度超高的影响因素,并对其进行了优化设计。结果表明,影响支撑座温度的因素从大到小依次为:陶瓷辊棒末端温度,辐射管托架温度及炉壳温度。支撑座优化设计方案为:在辐射管裸露处加装纤维隔热罩;在支撑座底部设计8 mm过水孔,进行水冷散热。通过ANSYS模拟分析,优化后支撑座安装位置温度由112℃降低到80.2℃,改善了轴承工作环境,延长了轴承工作寿命,设计方案可行。

Influencing factors of high temperature of protective atmosphere roller hearth furnace support block were analysed, and the support block was optimal designed. The results show that the influencing factors of support block from large to small is as follows： the end temperature of ceramic roller, the radiant tube bracket temperature and furnace shell temperature. The optimization design of support block is that fiber insulation cover is installed on the bare spots of radiant tube, one φ8 mm water hole is designed at support block bottom for cooling. By ANSYS simulating, the position temperature of support block is decreased from 112 ℃ to 80.2 ℃ after optimizing which improve the working environment and prolong the life of bear.