热磁仪是用来测定钢的过冷奧氏体转变曲线。理论和实践证明,由于退磁因子的影响,试样在磁场中的偏转角度α与磁化强度4πJ之间不成线性关系,以线性关系按偏转角度来计算奥氏体等溫转变量,在转变的起始阶段会引入很大的误差,因此必须采用热磁标样进行校正。 我所受冶金部太钢会议的委托,承担试制热磁标样的任务。本标样采用冶炼、锻造、轧 Thermometers are used to determine the supercooled austenite transformation curve of steel. Theoretical and practical results show that due to the influence of the demagnetization factor, the deflection angle α in the magnetic field does not have a linear relationship with the magnetization 4πJ, and the isothermal transformation amount of the austenite is calculated in a linear relationship according to the deflection angle. The initial stage will introduce a lot of errors, it must be used thermal magnetic standard calibration. I was entrusted by the Metallurgical Department of TISCO meeting, undertaking the task of trial production of thermal magnetic standard. The standard sample smelting, forging, rolling