Efficient deoiling and derusting liquid for metal surface treatment

Abstract

The invention discloses an efficient deoiling and derusting liquid for metal surface treatment. The efficient deoiling and derusting liquid is prepared from the following raw material ingredients in parts by weight: 30-35 parts of phosphoric acid, 20-25 parts of acetic acid, 15-20 parts of benzene sulfonic acid, 10-12 parts of acrylic acid, 10-15 parts of chloric acid, 8-10 parts of carbonic acid, 5-8 parts of ammonia water, 3-5 parts of ferric hydroxide, 3-6 parts of sodium hydroxide, 6-8 parts of potassium dihydrogen phosphate, 5-6 parts of sodium hexametahposphate, 6-8 parts of sodium tripolyphosphate, 7-8 parts of silica, 3-5 parts of calcium silicate, 4-6 parts of thioacetamide, 2-3 parts of urea, 3-5 parts of fatty alcohol-polyoxyethylene ether, 5-6 parts of cocoanut fatty acid diethanolamide, 8-10 parts of oxalic acid, 5-6 parts of sodium chloride, 6-10 parts of p-polyethylene glycol and 55-60 parts of deionized water. The efficient deoiling and derusting liquid for the metal surface treatment has the advantages that the derusting effect is good, the derusting speed is high, the cost is low, the use is convenient and safe, is free from environmental pollution and is free from irritation or damage to human bodies and metal objects, the efficient deoiling and derusting liquid is safe, non-toxic and non-volatile, and the like; and during use, the consumption is low, the cost is low, and oil stains and rust stains can automatically fall off by only soaking at normal temperature after the efficient deoiling and derusting liquid is used.

Description

technical field [0001] The invention relates to the technical field of an oil-removing and rust-removing liquid for cleaning metal materials, in particular to an efficient oil-removing and rust-removing liquid for treating metal surfaces. Background technique [0002] The corrosion of metal surfaces is a very complex system, and its composition is very different under different oxidation conditions. Before metal materials are coated such as electroplating, spraying, dipping, etc., their surfaces must be treated, that is, to remove oil dirt, impurities and rust layers on their surfaces. The current derusting method one is a mechanical method, but a chemical derusting method, but the mechanical method requires manpower to use a tool area to eradicate, can not completely eliminate the rust, and requires more labor. [0003] The chemical derusting method basically adopts the formula of derusting phosphating agent and phosphating solution to form an anti-corrosion layer on the s...

AI Technical Summary

Problems solved by technology

But the shortcoming of above-mentioned technology is that the structure of anticorrosion layer formed by above-mentioned formula is relatively loose, and the time of effective antirust is shorter, and its waste water still has certain pollution to environment, and the storage time of product is very short, loses efficacy easily, and rust removal effect not ideal