据英刊《工艺加热》报道,美国 Kanthal公司发展了一种新的电炉、烘箱用铁基铬铝合金电阻加热丝(称为 Kanthal AF)。据称此新合金可以替代传统的镍铬合金。在高的表面负荷下,此合金的尺寸稳定性比 Ni-Cr合金高50%,因而可以减少电阻丝的重量和体积,大大降低加热元件的成本,延长加热元件的使用寿命(见表1) According to the British edition of “Process Heating,” Kanthal Inc. of the United States has developed a new electric furnace with an iron-based chrome-aluminum resistance heating wire called the Kanthal AF. Allegedly the new alloy can replace the traditional nickel-chromium alloy. Under high surface load, the alloy is 50% more dimensional-stable than Ni-Cr alloy, which can reduce the weight and volume of the resistance wire, greatly reduce the cost of the heating element and prolong the service life of the heating element (see Table 1)