efficiency of heat transfer(As melting proceeds the efficiency of heat transfer to the scrap and bath drops off and more heat is radiated from the arc to the sidewalls. 随着熔炼的进行,对废钢和熔池的传热效率下降,电弧辐射热更多地传向炉墙。)
uniform heat transfer across slag layer(Mold fluxes for the casting of medium carbon steels are designed to have a high crystallinity index to form uniform heat transfer across slag layer and thus reduce the likelihood of longitudinal cracking in the cast product. 中碳钢连铸用结晶器保护渣的设计目的是使其具有高的结晶指数以便使渣层均匀传热,从而降低连铸坯产生纵裂纹的可能性。)
heat transfer from the arcs to the steel(Some of the benefits attributed to foamy slag in EAF are decreased heat losses to the sidewall, improved heat transfer from the arcs to the steel, reduced power and voltage fluctuations, reduced electrical and audible noise, increased arc length without increasing heat loss and reduced electrode and refractory consumption. 电弧炉使用泡沫渣的优点是:降低热量传向炉墙造成的热损、改善电弧向钢水的传热、降低电功率和电压波动、降低电源音频噪声、增加电弧长度但不增加热损失以及降低电极和耐火材料消耗。)
steel for heat transfer tube of steam generator(【技】用于制造蒸汽发生器传热管的钢材。此类钢应具备良好的抗应力腐蚀断裂和抗均匀腐蚀的能力、优异的导热性能以及加工与焊接性能。常用的材料有 18-8 系列不锈钢、镍基因科镍-600、因科洛依- 800和因科镍-690 合金。18-8 系列在含氯化物和氧的介质中会发生应力腐蚀断裂。因科镍-600是它的改进型,但只在弱碱性水溶液中具有抗应力腐蚀断裂能力。因科洛依-800 的抗晶间腐蚀和抗应力腐蚀断裂均优于因科镍-600,但不抗苛性碱的应力腐蚀断裂。因科镍-690耐高温水应力腐蚀性能最好。目前使用最普遍的是因科洛依-800和因科镍-690合金。)