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远红外线加热是近年来发展起来的一项新技术,它利用远红外加热元件对被加热体进行加热。目前在塑料、油漆、油脂等涂膜的烘烤和食品、纸张、粮食等加热烘干方面得到广泛应用。红外线加热在钢铁热处理方面的应用国外也有新报道。我们把远红外加热应用于热处理回火,经反复试验,制成远红外线低温回火炉如图1。电热体(7)发出的热量通过远红外涂料板(6)向炉膛工件发射出远红外线,大部分远红外线被工件吸收,少部分反射或穿透工件射向炉膛。为了提高热效率,在电热体对面的炉壁处安
Far-infrared heating is a new technology developed in recent years, which uses far-infrared heating elements to be heated body heating. Currently in plastic, paint, grease and other baking film and food, paper, food and other heating and drying has been widely used. Infrared heating in the heat treatment of steel has also been newly reported abroad. We apply far-infrared heat treatment tempering, after repeated tests, made of far-infrared tempering furnace shown in Figure 1. The heat generated by the heating element (7) emits far-infrared rays toward the workpiece of the furnace through the far-infrared coating plate (6). Most of the far-infrared rays are absorbed by the workpiece and a small part of the reflection or penetration of the workpiece is directed toward the hearth. In order to improve thermal efficiency, in the electric furnace opposite the furnace at the security