绝热材料在热处理设备中是很重要的组成部份,不仅影响到炉子的保温性能,能源的消耗,而且涉及到炉子的体积大小,厂房占地面积,炉体的重量,及钢材的消耗。从六十年代开始,尤其是七十年代以来,国外已在许多热处理炉上使用了一种导热系数很小,密度特别低的新型材料——陶瓷纤维。国内近几年来在加热设备中也开始采用这种材料。目前主要有以下几种:1)氧化铝纤维,可耐高温1600℃,目前国内还不能生产,尚在研制中;2)硅酸铝纤维,根据成份之不同,可耐温1300℃左右,国内已能大量生 Insulation materials in heat treatment equipment is an important component, not only affects the furnace insulation performance, energy consumption, but also relates to the size of the furnace, plant floor space, the weight of the furnace, and steel consumption. Since the 1960s, especially since the 1970s, a new type of ceramic fiber has been used in many heat treatment furnaces abroad, which has a very low thermal conductivity and a very low density. In recent years, domestic heating equipment also began to use this material. At present, there are mainly the following: 1) alumina fiber, high temperature resistant 1600 ℃, the current domestic can not produce, still under development; 2) aluminum silicate fiber, according to the different ingredients, can be temperature 1300 ℃, domestic Has a large number of students