钢制储罐广泛应用于石油、化工、建材等行业且日趋大型化。因其具有制作成本低、工期短、使用寿命长、质量可靠等特点正被各行各业广泛采用。我国近年钢制储罐业发展迅猛,10×10~4m~3以上的储罐也正在大量制作与使用中。钢制储罐制作最难的部位是储罐底板,底板由钢板逐块拼焊而成,由于焊缝多,焊接所产生的应力作用会使底板产生变形,而变形造成的瓢曲、扭曲、起拱、凹陷、连续波浪等缺陷使后续作业无法进行,严重的焊接变形产生的缺陷会造成底板报废,其所产生的经济损失是企业难以承受的。长期的生产实 Steel storage tanks are widely used in petroleum, chemical, building materials and other industries and the increasing size. Because of its low production costs, short construction period, long service life, reliable quality and other characteristics are being widely used by all walks of life. In recent years, China’s steel storage tank industry has developed rapidly, 10 × 10 ~ 4m ~ 3 tank is also a large number of production and use. The most difficult part of steel storage tank production is the tank floor, the bottom plate welded by the piece by piece, due to the weld, the stress generated by the welding will make the floor deformation, and deformation caused by the crooked, distorted, Fissures, potholes, continuous wave and other defects make follow-up operations can not be carried out, serious defects in the welding deformation will cause the scrap scrap, the resulting economic losses are unbearable enterprises. Long-term production is real