不管你怎样使用与保管,只要钢材与空气、水和酸碱等相接触,它就要发生或快或慢的生锈与腐蚀现象。据试验,放置在露天的钢材,一个月,一吨钢材能腐蚀掉二公斤多,四个月,就能腐蚀掉15公斤。有人作过统计,世界上因腐蚀而损失的钢铁,约占每年生产量的40%。有些机器因部分的腐蚀,以至造成整个机器的报废,这种情形在航空与船舶方面造成的损失更是惊人。钢材为什么会腐蚀呢?简单的说,就是钢材受到水、空气、酸、碱等周围的介质作用后起了化学变化,把金属变成了另一种新物质。我们把钢材发生这种化学变化而遭到破坏的过程叫做腐蚀。 Regardless of how you use and keep it, as long as the steel is in contact with air, water and acids and alkalis, it will happen quickly or slowly rust and corrosion. According to tests, steel placed in the open air, one month, a ton of steel can erode more than two kilograms. In four months, 15 kilograms can be eroded. Some people have made statistics that the world’s loss of steel due to corrosion accounts for about 40% of the annual production. Some of the machines are partially corroded, causing the entire machine to be scrapped. This situation has caused astonishing losses in aviation and ships. Why do steels corrode? Simply put, steel is chemically altered by surrounding media such as water, air, acids, and alkalis, turning metal into another new substance. The process of destroying our steel by this chemical change is called corrosion.