退火温度对刃具钢6CrW2Si组织和硬度的影响

Effect of Annealing Temperature on Microstructure and Hardness of Cutting Steel 6CrW2Si

为满足用户加工硬度的特殊需求(硬度≤210HBW),降低6CrW2Si钢硬度,本文利用连轧厂实际辊底式退火炉进行了不同退火温度的退火试验,并借助金相显微镜对不同退火温度下的组织进行了分析,以确定最佳的退火温度。结果表明:6CrW2Si的退火硬度与退火温度有关,随着退火温度的升高,硬度先下降后上升,当退火温度为810℃时,钢材平均硬度值最低(193 HBW左右),球化组织为均匀的球化珠光体组织。

Tests were annealed under different temperature, for purchasers word-hardness（ ≤210 HBW） special requirements satisfaction to determine the eptimal annealing process with the help of metalloscope to analyze annealing shape of 6 CrW2 Si under different temperature. The result showed that 6 CrW2 Si annealing hardness was connected with temperature,with the increase of annealing temperature, the hardness dacreases first and then increases. When annealing temperature is 810℃, the average hardness of steel products is the lowest（adout 193 HBW） and the structure is uniform spheroidized pearlite.