Anti-corrosion treatment agent for metal material surface

Abstract

The invention discloses an anti-corrosion treatment agent for a metal material surface. The anti-corrosion treatment agent comprises 20 to 30 parts of manganous dihydrogen phosphate, 20 to 30 parts of zinc dihydrogen phosphate, 1 to 3 parts of potassium fluozirconate, 1 to 3 parts of phytic acid, 3 to 5 parts of citric acid, 0.5 to 1 part of emulsifying agent, 1 to 2 parts of vinylsilane, 2 to 4 parts of epoxy silane, and proper amount of phosphatizing accelerator. The anti-corrosion treatment agent can overcome the shortages in the prior art, and is stable in a solution, simple in process control process, and high in corrosion resistance; meanwhile, the heavy metal ions can be decreased. The anti-corrosion treatment agent is small in VOC (Volatile Organic Compounds) and sediment amount, small in pollution, high in efficiency, and wide in applicable scope.

Description

technical field [0001] The invention relates to the technical field of metal material anticorrosion, in particular to a metal material surface anticorrosion treatment agent. 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. 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 secon...

AI Technical Summary

Problems solved by technology

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. Ideally, the oxide skin cannot be completely removed and cannot meet the required standards. In order to effectively remove the dense oxide layer of steel, large-scale components are currently treated with "sandblasting", but the investment in equipment, workshops, etc. requires hundreds of thousands to millions of dollars. Water, electricity, and air compressors, laying air ducts, erecting wires, and making sandblasting equipment. Spraying with quartz sand or even steel sand will cause serious air pollution, strict labor protection requirements, high cost, and high labor intensity.