采用50kg真空炉及模拟退火炉进行冶炼和退火试验,结合硬度、拉伸试验及金相分析,研究了镀锡原板中的w(C)和退火温度对调质度的影响。结果表明,在相同的退火温度条件下,随着镀锡原板中w(C)增加约0.001%,镀锡板的洛氏表面硬度值(HR30Tm)增加约5,其强度增加5～10 MPa,而伸长率下降约1.5%;在w(C)不变的条件下,随着退火温度的上升,镀锡板的洛氏表面硬度值下降。 Smelting and annealing experiments were carried out in 50kg vacuum furnace and simulated annealing furnace. Combining with hardness, tensile test and metallographic analysis, the effects of w (C) and annealing temperature on the temper degree were studied. The results show that with the increase of w (C) about 0.001% in the original tin plate, the hardness of the tin plate increases by about 5 and its strength increases by 5 ~ 10 MPa at the same annealing temperature. While the elongation decreased by about 1.5%. With the constant w (C), the Rockwell surface hardness decreased with the increase of annealing temperature.