此种盐浴炉采用硅酸铝耐火纤维和珍珠岩两种耐火材料进行隔热,调节加热功率不用通过变压器可由改变电热元件的接法实现,盐浴由加热元件直接加热,故比电极式或外热式渗浴炉分别节能30%和50%,炉温均匀,炉膛各部位温差在3～5℃,适用于600℃以下的回火、 This kind of salt bath furnace is made of aluminosilicate refractory fiber and perlite two kinds of refractory materials for insulation, adjust the heating power without changing the transformer can be connected by changing the heating element, the salt bath is heated directly by the heating element, so than the electrode type or External heat bath furnace were energy-saving 30% and 50%, uniform temperature, the temperature difference between the various parts of the furnace at 3 ~ 5 ℃, suitable for tempering below 600 ℃,