井式渗碳炉炉罐有限元优化设计

Optimized design of pit carburizing furnace retort by finite element

对井式渗碳炉炉罐进行了有限元模拟优化。结果表明,优化前炉罐模拟得到最大应力58.3 MPa,最大畸变1.89×10-1mm,不符合工程应用要求;对炉罐进行厚度由上至下逐步减少,底部采用锥度收口优化后,模拟得到最大应力34.5 MPa,最大畸变1.28×10-1mm,炉罐重量减少1200 kg,节省了成本并符合工程应用要求。

Pit carburizing furnace retort was simulated and optimizated by FEM. The results show that the simulated maximum stress and distortion of the furnace retort is 58.3 MPa and 1.89 ×10^-1 mm respectively before optimization which is not meet the requirements of engineering application. After optimization that the thickness of furnace retort is gradually reduced from top to bottom and the bottom is taper nosing, the simulated maximum stress and distortion of the furnace retort is 34.5 MPa and 1.28 ×10^-1 mm respectively, and the weight of furnace retort is reduced by 1200 kg which save the cost and meet the requirement of engineering application.