我厂是生产三板设备的专业厂,其铸钢、铸铁件及长网成型机辊筒等按图纸要求为无气孔砂眼,水压试验不漏水。以前处理气孔砂眼是用铸铁焊条补焊再加工,但补焊处有硬点,车削困难,并有裂纹易漏水,经反复研究试验,用生铁屑粘补铸铁气孔砂眼效果很好。其方法是: I plant is the production of three professional plate plant equipment, the cast steel, cast iron and long net forming machine rollers and other drawings required for non-porous trachoma, water pressure test leaking. Prior to dealing with stomatal trachoma is cast iron welding repair welding, but the repair of a hard spot, turning difficult, and easy to leak cracks, after repeated research tests, with cast iron pig iron sandblasting effect of sticking good. The method is: