前言伟大领袖毛主席教导我们说:“中国人民有志气,有能力,一定要在不远的将来,赶上和超过世界先进水平。”我厂广大革命职工,遵照毛主席的教导,高举“鞍钢宪法”的伟大红旗,掀起了波澜壮阔的技术革新、技术革命运动。我厂生产球磨机用的冷硬铸铁球,过去用普通冲天爐化鉄,用铸造生鉄作原料,产量低、成本高,给国家造成很大浪费,还满足不了用户需要。在“双革”运动中,经过几百 Foreword Chairman Mao, the great leader, taught us to say: “The Chinese people have ambition and ability and must catch up with and surpass the world’s advanced level in the near future.” Our revolutionary workers and staff, following Chairman Mao’s teachings, hold high the bar of “Ansteel The great red flag of the Constitution has set off a magnificent technological revolution and a technical revolution. I plant the ball mill used in the production of chilled cast iron balls, the past with ordinary cupola 化, with cast raw 鉄 as raw material, low output, high cost, causing a great waste to the country, but also can not meet the needs of users. In the ”double leather" movement, after hundreds