我厂生产的挖掘机抓斗,其斗齿是采用铸造高锰钢。它的化学成份是:碳1～1.5%;锰10～15%;硅0.3～1%;磷<0.15%;硫<0.05%。制造上要求与 A_3钢焊接起来(对接,开 X 型坡口)。这种钢由于锰及碳含量高,故可焊性差,易产生裂纹。毛主席教导我们说:“社会的财富是工人,农民和劳动知识分子自己创造的。只要这些人掌握了自己的命运,又有一条马克思列宁主义的路线,不是回避问题,而是用积极的态度去解决问题,任何人间的困难总是可以解决的。”用毛泽东思想武装起来的工人阶级,发扬大 I produced the excavator grab, the bucket teeth are cast high manganese steel. Its chemical composition is: carbon 1 ~ 1.5%; manganese 10 ~ 15%; silicon 0.3 ~ 1%; phosphorus <0.15%; sulfur <0.05%. Manufacturing requirements and A_3 welded steel (butt, open X-groove). This steel due to high manganese and carbon content, so poor weldability, easy to crack. Chairman Mao taught us: “The wealth of society is created by the workers, peasants and labor intellectuals themselves. As long as these people hold their own destiny and have a Marxist-Leninist course, they are not avoiding the issue but using a positive attitude To solve the problem, any human difficulty can always be solved. ”The working class armed with Mao Tse-tung’s thought has greatly promoted