一导言海绵钛质量标准中,布氏硬度是重要指标。但海绵钛不能直接用来测定硬度,必须先制成电极捧,再经真空电弧炉熔炼,车制成符合要求的试样块才能测定。因此试样制备的过程烦杂,每个环节稍有疏忽,都会使最后结果出现偏差。海绵钛硬度与杂质的关系按统计规律有如下经验公式 An Introduction Sponge titanium quality standards, Brinell hardness is an important indicator. However, sponge titanium can not be directly used to determine the hardness, we must first make the electrode holding, and then by vacuum arc furnace melting, the car made of the required sample block to determine. Therefore, the sample preparation process cumbersome, each link a little negligent, will make the final result of deviation. Titanium sponge hardness and impurity relationship according to the statistical rules have the following empirical formula