锅炉大烟管缩口,过去是在炉内烧红,然后用汽锤锻打,需三人操作,劳动强度高,质量差。锅炉车间工人革新成功一种电动油压装置,可以一次冷压成形,不需加热,质量良好。一个人就能操作,提高效率并改善了劳动条件。现已投入生产使用。 Large pipe smoke pipe necking, the past is burning red in the furnace, and then forged with steam hammer, requiring three operations, high labor intensity, poor quality. Boasting the success of the boiler shop worker, an electric hydraulic unit can be cold-formed once without heating and of good quality. One can operate, improve efficiency and improve working conditions. Has been put into production use.