我厂生产的汽轮机中,需用大量的大型圆柱螺旋弹簧,其钢丝直径最大为φ55,最大展开长度达9米,最大重量78公斤。为生产这类弹簧,我厂编制了弹簧热缠工艺,并自制了卷簧机、油压机、磨头机、并头机、长8.6米的大油炉等设备。多年来生产实践证明,工艺是可行的,设备是可靠的,弹簧质量达到了“GB1239—76普通圆柱螺旋弹簧”的国家标准。 I plant the steam turbine, the need to use a large number of large cylindrical helical spring, the wire diameter up to φ55, the maximum expansion length of 9 meters, the maximum weight of 78 kg. For the production of such springs, I plant the preparation of the spring hot winding process, and made a self-winding spring machine, hydraulic machine, grinding machines, and the first machine, 8.6 meters long oil furnace and other equipment. Years of production practice has proved that the process is feasible, the equipment is reliable, the spring quality has reached the “GB1239-76 ordinary cylindrical coil spring,” the national standard.