Metal-mould interfacelnverse heatThe heat transfer coefficient at the metal–mould interface of a unidirectional solidification system was calculated by an algorithm that uses the whole domain method for the inverse solution to the heat conduction differential equation with phase change. Experimental ...
碳传递系数 carbon mass transfer coefficient 单位时间(秒)内气氛传递到工件表面单位面枳的碳最(碳通量)与气氛碳势和工件表面含碳量(碳钢)之间的差值之比。 退碳decarburizing 有意使工件表面降碳的化学热处理。 复碳carbon restoration 工件因某种原因脱碳后,为恢复初始碳含量而进行的渗碳。 过渗碳 overcarburizing...
The metal/die interfacial heat transfer coefficient (IHTC) was successfully determined based on the measured temperature inside the die by solving the inverse heat transfer problem. The IHTC was then used as the boundary condition to determine the 3-D temperature field inside the casting. Based on...
Uo is the overall heat transfer coefficient between the water surface and the environment given as:[9]Uo=hw·Tg−Ta/Tg−Ts+hrgsand the surface area Ar is the ratio of cover area Ag to the free horizontal surface area of the salt water in the basin Aw:[10]Ar=Ag/Aw. ...
The heat transfer coefficient between liquid slags and solid surfaces is important for the design and operation of metallurgical reactors. An experimental technique developed for the purpose of measuring the heat transfer coefficient between liquid slags and solid metals is described. During the initial ...
As an important role in the calculation of the effective heat transfer coefficient, the metal temperature at the mold/metal interface is calculated using an extrapolation technique and an inverse scheme. A lump capacity method is also utilized to estimate the average values of the effective heat ...
The 6061 aluminum alloy cooling rate curves and surface heat transfer coefficient variation with temperature under different cooling methods was studied through using cooling curves which were obtained by end-quench,combine with finite difference method and inverse heat conduction method.The results show ...
cone, the overall heat transfer coefficient depends on the cone angle, the film thickness, the speed of rotation, the liquid properties, the temperature difference between the evaporating liquid and the condensing steam, the evaporating temperature, and the evaporating surface metal type and thickness...
The results suggest that this coefficient can decrease by an order of magnitude during solidification for the case of a splat on metal substrates. For splats on quartz, where there is good bonding, the thermal contact coefficient appears to stay the same before and after solidification....