Testing of High Temperature Tempering of Laminated Spring Steels by Pulsed Magnetic Method

摘要

The results of investigation of possibility to use the curve parameters of the gradient of the normal component of the residual-magnetization field strength, of its hysteresis loop and of the recovery curves at local magnetization and magnetization-reversal of the article under test by series of magnetic field pulses, varying in time and sign for multiparameter testing are done. On the example of the specimens of silicon and chrome-manganese-vanadium spring steels it is shown, that in such case a unique dependence between these parameters and the hardness of the article can be established. Besides high correlation coefficients and acceptable values of rms deviation are available.