我厂6m刨床在使用过程中,因行走蜗杆壳体发生断裂,被迫停产。分析断裂原因是,壳体强度不够,底部壁厚仅10mm;蜗杆在壳体内工作时,长期反复受轴向抗力,左右窜动,增大了冲击力,断裂处有气孔,且装配工艺不合理。针对上述原因,采用钢芯石墨型铸 I plant 6m planer in the use of the process, because of the occurrence of broken worm housing, was forced to stop production. Analysis of fracture reasons is that the shell strength is not enough, the bottom wall thickness of only 10mm; worm work in the shell, the long-term repeated by the axial resistance, left and right play, increased impact, fracture at the pores, and the assembly process is unreasonable . For the above reasons, the use of steel core graphite casting