【摘要】 研究了含硼0.5％高硼钢冶炼、锻造、热处理工艺;探讨了高硼钢、含4％Ni(或2％Ni)高硼钢、0.5％Ni-0.5％Mo高硼钢的机械性能;摸索了含硼0.5％铸铁熔炼工艺。试验结果表明,试验室采用的高硼钢冶炼工艺、锻造工艺是可行的;高硼钢的热处理制度为1050℃/0.5h水冷+810℃/1h油冷;高硼钢冲击韧性不稳定,存在缺口敏感性,其机械性能不能满足技术要求;4％Ni或2％Ni高硼钢及0.5Ni-0.5％Mo高硼钢的机械性能均能满足技术条件要求;试验室熔炼高硼铸铁工艺是可行的,其性能基本满足技术条件要求。更多还原

【Abstract】 The smelting, forging, heat-treatment technology and the mechanical properties of three kinds of high-boron steels (type 1: 0. 5% boron; type 2: 0. 5% boron and 4 % or 2 % nickel; type 3:0. 5% boron,0. 5% nickel and 0. 5% molybdenum ) were studied. The test results show that the technology for smelting, forging and heat -treatment (1050C/0. 5 h water cooled+810C/l h oil cooled ) in laboratory is feasible . Being sensitive to notch, the impact toughness of high-boron steel type 1 is not steady and can not meet the technology requirements on mechanical properties. The mechanical properties of both high-boron steel type 2 and type 3 can meet the technological requirements. The smelting technology of high-boron casting iron cantaining 0.5% boron was researched. The tests show that this casting iron can be smelted in laboratory and its properties can basically satisfy the technology requirements.更多还原