銹——金属的腐蝕,对机械制造工业带来了巨大的損失,尤其是精密的零件如軸承产品等,产生了銹蝕,不但影响精度和光洁度,而且降低了使用寿命,甚至报廢不能使用。軸承防銹工作是一項重要的工作,特別是工序間的防銹,象軸承在热处理經过酸洗、清洗、磨加工后,还有許多道工序,尤其是当产品不是流水生产一次順序地加工完毕时,就要儲存在中間庫內,因此工序間儲存的軸承套圈必須进行防銹。工序間防銹一般采用的方法有以下几种: (1) 涂油:象成品一样涂上防銹油。这一方法必須在执行下一工序前进行清洗,比較麻煩。(2) 浸涂濃的亚硝酸鈉溶液:将产品清洗后,浸入含有15～20%的亚硝酸钠和0.6%碳酸鈉的溶液 Rust - metal corrosion, the mechanical manufacturing industry has brought tremendous losses, especially precision parts such as bearing products, rust, not only affect the accuracy and finish, but also reduce the service life, or even scrapped can not be used. Anti-rust bearing work is an important task, especially between the rust-proof process, such as bearings in the heat treatment after pickling, cleaning, grinding processing, there are many procedures, especially when the product is not a sequence of production Processing is completed, it is necessary to store in the middle of the library, so the process of storing the bearing rings must be rust-proof. Anti-rust process commonly used methods are the following: (1) oiled: the same as the finished product coated with anti-rust oil. This method must be cleaned before the next operation, which is troublesome. (2) dipping concentrated sodium nitrite solution: After the product was washed, immersed in a solution containing 15 to 20% sodium nitrite and 0.6% sodium carbonate