前言曲轴是柴油机上的重要零件。我厂采用球墨铸铁铸造已有八年历史。多年来由于存在内部组织缩松与轴颈表面夹杂等缺陷,使曲轴质量出现波动,一直是工厂生产的一个关键。为尽快提高曲轴质量,在铸铁车间党支部领导下,组成以老工人为主体的三结合攻关组,党委主要领导同志深入车间蹲点,与攻关组一起,以毛主席的《实践论》、《矛盾论》、《人的正确思想是从那里来的?》等光辉著作 Foreword Crankshaft is an important part of diesel engine. I plant with ductile iron casting has eight years of history. Over the years due to the existence of internal organization shrinkage and journal surface inclusions and other defects, the quality of crankshaft fluctuations, has been a key manufacturing plant. In order to improve the quality of the crankshaft as soon as possible, under the leadership of the party branch of the cast iron workshop, a three-pronged research team with an old worker as the main body will be formed. Major leaders of the party committees will deepen their understanding of the workshop and, together with the research team, take Chairman Mao’s “Theory of Practice, On ”,“ From where is the correct human thought? ”And other glorious works