钢铁常温发黑的前处理,其中除油和除锈处理,一般分两步进行,先在碱液中除油,后在酸液中除锈。工序复杂,成本高。我们在从事常温发黑处理过程中,经过多次试验,配制成一种混合溶液,可使除油除锈同时进行。这样既可简化工艺,减少设备数量,又可缩短处理时间,提高生产率。我们采用的几种除油除锈合一表面处理剂的配方及工作规 Steel blackening at room temperature pretreatment, of which degreasing and rust treatment, generally in two steps, the first degreasing in lye, after the rust in the acid. Complex process, high cost. We are engaged in blackening process at room temperature, after many tests, formulated into a mixed solution, degreasing rust can be carried out at the same time. This not only simplifies the process, reduces the number of devices, but also shortens the processing time and increases the productivity. We use several kinds of degreasing rust a surface treatment agent formulations and work rules