防止机械制品的裸露金属面,特别是精加工面,在工序间和储存运输过程中的生锈,对保证制品的设计精度和使用性能,有重大意义。大气中的氧和水分,是引起金属锈蚀的主要因素;其他如含硫气体、浮尘、盐雾、凝露以及工件表面上的污染,如手汗等,都 To prevent the bare metal surface of mechanical products, especially the finished surface, rust during the process and storage and transportation, to ensure the accuracy of product design and performance, of great significance. Oxygen and moisture in the atmosphere, is the main factor causing metal corrosion; others such as sulfur gas, dust, salt spray, condensation and the surface of the workpiece, such as hand sweat, etc.