Four-function treating liquid for surface of iron or steel

Abstract

The invention relates to tetrafunctional surface treatment fluid for steel, the ingredients of which are: phosphoric acid: 60kg, polyvinyl alcohol: 0.2kg, zinc oxide: 2kg, zinc nitrate: 0.5kg, tartaric acid: 1.5kg, metal cleaner: 8611kg, ammonium molybdate: 0.36 kg and the rest of water. The product does not lead to environmental pollution and can guarantee the safety of production operation. Scientific material proportion ensures the product is limpid and has good stability. The invention has excellent derusting ability and can dispose of scale cinder attached on the surface of the steel, prevent an electrolyte from expansion and effectively control filiform corrosion under a film and corrosion in the breakage of a film coating. As for the usage method, dipping, spraying, brushing and wiping are all allowed. Simplification ensures that the operation process can be completed at one time.

Description

technical field

[0001] The invention belongs to a treatment liquid for removing and preventing rust on steel surfaces and a preparation method thereof, in particular to a four-function steel surface treatment liquid. Background technique

[0002] Environmental protection and energy saving are the common theme in the world. For this reason, in the field of rust removal and anti-rust on steel surfaces, everyone is constantly researching. How can we not only ensure the safety of workers, but also reduce production and operation costs? At present, the actual situation is that most of them still use the traditional method, that is, a series of processes such as washing with hydrochloric acid or sulfuric acid and water, and then phosphating. The liquid contains heavy metals, nitrite and other toxic and harmful substances. The even more backward method is to use sandblasting or shot blasting to treat the rust on the steel surface. The production process is extremely cumbersome and...