METHOD FOR MEASURING HEAT TRANSFERRING COEFFICIENT WHILE COOLING STEEL MATERIAL

摘要

Purpose: a kind of method is arranged to one cooling formula model of raising degree for measuring heat transition coefficient, needs to hit a kind of hot-rolled steel material and enters the certain target for terminating temperature. Construction: change in temperature by using SUS304 without being realized by using the deformation of a dilatometer, when aerial cooling. Here, SUS304 is steel, not generating heat occurs in transmitting. Experimental run vacuum is not to generate an earth-current. The heat transfer coefficient of SUS304 by a formula realize, hvac (SUS)=Vd (pCpT)/dt A(T- to). Here, V is the volume of a sample, A is the surface area of sample, and p is the density of sample. Cp is the specific heat of sample. Here, Cp is changed according to temperature. T is absolute temperature, is normal temperature, and t is time.Hvac is the heat transfer coefficient of SUS304. Here, dT/dt is realized by experiment.