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我厂自解放以来,在产量和质量逐渐提高的过程中,由于设备能力不足(以轧钢机主轴最为薄弱)而限制了产量的进一步提高,自1958年大跃进以来,生产要求迅速提高与设备能力不足的矛盾更为突出,我厂为了确保轧钢产量的提高,决定在58年7～8月进行对轧钢车间的技术改造——大修理。大修前设备布置及生产概况: 轧钢车间设有连续式加热炉二座(烧煤),400公厘开坯轧钢机一架及250公厘横列式小型轧钢机四架,其动力为750HP及500HP电动机并联传动,成品机架由200HP电动机单独传动,轧辊转速,400公厘开坯轧机为98转/分,250公厘小型轧机为190转/分,成品轧机为240转/分,平面布置参看图1。生产过程:钢锭由炼钢车间用平车运来后,用天车及电葫芦分别装炉,用顶钢机逐渐推进,出炉时利用自动推料机推出,由人力用吊钳输送到400公厘开坯轧机,该机架完全为人力操作,在万能菱形孔型内轧制7～9道后,由输送辊道送到250公厘小型轧机进行轧制,当通过小型轧机第一道后用摆动式热剪机切去头尾,然后继续进行轧制,在小型机列共通过5道,分别采用了正反围盘,成品轧出后由人工将钢材甩至冷床,冷床上设有雨淋式强迫冷却设备,当冷至室温时再顺序鈎到辊道送至冷剪机切成定尺钢材,再经检
Since the liberation of our factory, in the process of gradual increase of production and quality, the production capacity has been limited due to the shortage of equipment capacity (the weakest of the rolling mill spindle). Since the Great Leap Forward in 1958, the production requirement has rapidly increased and the equipment capacity Insufficient contradictions are more prominent, I plant in order to ensure the increase of rolling production, decided in 58 years from July to August for the rolling mill of the technological transformation - major repairs. Pre-overhaul equipment layout and production profile: Rolling workshop with continuous heating furnace two (coal), 400 mm and a 250 mm rolling mill a series of two small-scale rolling mill, its power 750HP and 500HP The motor is driven in parallel. The finished frame is driven by 200HP motor alone. The speed of the roller is 400 rpm. The number of open rolling mills is 98 rpm. The small mill of 250 mm is 190 rpm. The finished rolling mill is 240 rpm. figure 1. Production process: steel ingot by the steel plant with flat car shipped, with the crane and electric hoist were loaded furnace, with the top steel machine gradually pushed out when the use of automatic feeding machine introduced by the human use of tong delivery to 400 Cissor open mill, the rack is completely manual operation, after the universal diamond-shaped hole rolling 7 to 9, the conveyor roller conveyor to 250 milliliters of small rolling mill, after passing through the first mill after a small With a swing-type heat cutting machine to cut the head and tail, and then continue rolling, a total of 5 in the small machine through a series of positive and negative were used in the plate, the finished product after rolling out by the steel thrown to the cooling bed, cooling bed There are rain-type forced cooling equipment, when cold to room temperature then hook to the roller to send to the cold shear cut into the length of steel, and then by the inspection