A kind of spring steel casting surface antirust pretreatment solution

Abstract

The invention discloses a spring steel casting surface rust-prevention pretreatment solution, which is prepared from the following raw materials: 200 to 300 ml / L of buffer solution, 15 to 20 g / L of agar, 15 to 20 g / L of potassium fluozirconate, 15 to 20 g / L of tartaric acid, 15 to 20 g / L of phosphoric acid, 5 to 10 g / L of trihytdroxy methyl-aminomethane, 5 to 10 g / L of paradimethylaminobenzaldehyde, 10 to 20 g / L of zinc oxide, 0.02 to 0.4 g / L of octoxynol, 10 to 20 g / L of initiator, and the balance deionized water. The spring steel casting surface rust-prevention pretreatment solution provided by the invention overcomes the defects of the prior art, and is stable, simple in technical control process, good in corrosion resistance, beneficial to reducing heavy metal ions, low in VOC (Volatile Organic Compounds), low in pollution, high in efficiency, and wide in application range.

Description

technical field [0001] The invention relates to the technical field of anticorrosion of metal materials, in particular to a solution for antirust pretreatment on the surface of spring steel castings. Background technique [0002] Metal corrosion is a very serious problem faced by various fields of the national economy at present, and the loss caused by metal corrosion in the world is as high as hundreds of billions of dollars every year. In order to achieve the purpose of anti-corrosion of the metal surface, paint is usually applied on the metal surface to isolate the metal from the external environment, thereby reducing the corrosion of the metal. A single physical or chemical method is often used to remove rust on the surface of steel. In the past, sandblasting and strong acid pickling were mainly used for rust removal. [0003] Sandblasting rust removal requires large investment, high cost, high labor intensity, and pollutes the environment; while strong acid pickling is...

AI Technical Summary

Problems solved by technology

[0003] Sandblasting rust removal requires large investment, high cost, high labor intensity, and pollutes the environment; while strong acid pickling is prone to over-corrosion, and secondary rust often occurs after pickling, and a large number of steel equipment is exposed to the air for a long time. At an extremely fast speed Corroded; in some rust removal and anticorrosion methods, the rust removal solution used contains unstable sodium sulfate dodecyl, so the stability of the rust removal solution is not high, and the rust removal speed is not fast; there are also cleaning, Brushing and other methods are generally used to remove the rust on the metal surface, but it is not thorough to remove the oxide scale, especially it is more difficult to remove the dense oxide layer on the surface of new steel. The process is complicated and takes a long time. Ideal, if the oxide skin cannot be removed, it will not meet the required standard