论文部分内容阅读
采用铸造焊接结构的机械部件以最充分利用铸造工艺和焊接过程的优点是现代机器制造发展的重要因素.同时,用具有良好铸造性和可焊性的高强度钢制造薄壁铸件具有特殊意义,为此,钢中的含碳量应不超过0.16%.虽然15??号钢的可焊性良好,但不能满足上述另两个要求.为了提高铸件的强度指标,在运输机械制造方面采用低碳锰钢是有发展前途的.锰能提高韧性,减低冷脆性和对应力集中的敏感性,并能补偿含碳量低之不足.
Advantages of using cast-welded mechanical components to make the most of the casting process and the welding process are important factors in the development of modern machine tools and, at the same time, making thin-walled castings of high strength steel with good castability and weldability is of special significance, To this end, the carbon content of steel should not exceed 0.16% .Although the 15 # steel weldability good, but can not meet the other two requirements.In order to improve the strength of castings indicators, the transport machinery used in the low Carbon-manganese steels have promising future, manganese can improve toughness, reduce cold brittleness and sensitivity to stress concentration, and can compensate for the low carbon content.