Having studied the relationship between temperedhardness and tempering temperature for hardened carbon steels, a tempering behaviour model is set up between hardness and temperature.
研究了淬硬钢回火硬度与回火温度的关系，建立了回火硬度与回火温度关系的回火效应模型。
2
The evaluation of measuring uncertainty in metallic material Brinell hardness test is studied by testing the hardness of the 45 quenched and tempered steel.
以45#调质钢硬度试验为例，研究了金属材料布氏硬度试验中测量不确定度的评定。
3
Tempered martensite was gradually generated as the cutting temperature increased, which is the main cause of the decrease in the hardness.