溧水钢铁厂为了保证出厂铸铁直管的质量,对铸造车间生产的铸铁管逐根进行水压、外观检验。往往发现一根四米长的管子,因一处有轻微渗水,就得被破碎掉回冲天炉重铸,实觉可惜。该厂决定做补管试验工作。生铁管的补漏并非容易,因它不只是将漏洞补上的问题,而且补好后应能承受 Lishui Iron and Steel Plant In order to ensure the quality of the factory cast iron straight pipe, cast iron pipe castings produced by the foundry by root pressure, visual inspection. Often find a four-meter-long pipe, due to a slight water seepage, you have to be crushed back to the cupola recast, I really feel pity. The factory decided to do the supplementary test work. Trapping pig iron tube is not easy, because it not only make up for the problem of holes, but also should be able to withstand a make up