如何减少或防止金属的氧化、脱碳、提高产品质量是热处理工作者最重要的一项任务.近十几年来,世界各国都在探索,极力寻找出一种操作简便、价格便宜、省工省时的保护热处理方法.如真空,惰性气体、可控气氛热处理等方面都取得了不少的成果.但由于一次投资大,生产成本昂贵,在实际使用中受到一定的局限性.与此同时,一种新型保护涂料的研制也取得了很大进展. How to reduce or prevent oxidation and decarburization of metals and improve product quality are the most important tasks of heat treatment workers.In the past decade or so, all countries in the world are exploring ways to find a simple, cheap, When the protection of heat treatment methods such as vacuum, inert gas, controlled atmosphere heat treatment and achieved a lot of results, but because of a large investment, high production costs, in actual use by some limitations.At the same time, A new type of protective coatings has also made great progress.