在毛主席亲自批示的《鞍钢宪法》的指引下,我局铸造车间工人、干部和技术人员,以大庆为榜样,发扬“有条件上,没有条件创造条件也要上”的革命精神,在沈阳铸造研究所等有关部门的大力协助下,经过反复试验,终于试制成功稀土镁中锰球墨铸铁磨球。几年来使用表明,中锰铁球与钢球相比,具有耐磨性强,使用寿命长,价格低廉等优点。磨球耗量与1966年 Guided by the “Anshan Iron and Steel Constitution,” which was personally authorized by Chairman Mao, our bureau cast the foundry workers, cadres and technicians to take Daqing as an example and carry forward the revolutionary spirit of “conditionally and conditionally creating conditions as well” Casting Institute and other relevant departments under the strong help, after repeated tests, and finally successful trial of rare earth manganese manganese nodular cast iron ball. Years of use shows that the medium manganese steel ball compared with the ball, with strong wear resistance, long life, low price and so on. Grinding ball consumption and 1966