【摘要】 本文采用碳化钨球对30CrMnSiNi2A超高强度钢进行布氏硬度试验,并研究了该钢种布氏硬度HBW与抗拉强度σb间的关系,采用电子计算机进行数据处理和多项式拟合,求得该钢的σb与HBW之间的数字表达式。解决了国内超高强度钢布氏硬度长期以来难以准确测定的问题。更多还原

【Abstract】 Tungsten carbide ball was used to measure the Brinell hardness of ultra high strength steel 30CrMnSiNi2 A , and the relationship between tensile strength and Brinell hardness value of the steel has been studied in this investigation. The experimental data were fittiedby polynomial using a computer and the relationship between a, and HBW has been obtained. Therefore the problem to measure the Brinell hardness of the ultra high strength steel, which is difficult to be accurately determined is solved.更多还原