Rust remover capable of improving metal corrosion resistance

Abstract

The invention relate to a rust remover capable of improving metal corrosion resistance. The rust remover is characterized by being prepared from, by weight, 45-60 parts of hydrochloric acid, 4-5 parts of phosphoric acid, 0.4-0.6 part of hexamethylenetetramine, 0.4-0.6 part of lauryl sodium sulfate, 0.15-0.4 part of triethanolamine, 0.4-0.6 part of citric acid, 0.5-1.2 parts of oleic acid, 0.8-1.6 parts of oxalic acid, 0.4-0.6 part of zinc sulfate, 0.1-0.5 part of aluminum sulfate, 0.2-0.4 part of aluminum sulfate and 20-70 parts of water. Zinc sulfate and other solid raw materials are added, the corrosion-resistant period of metal obtained after rust removal is at least doubled compared with that of original metal, rust can be efficiently and rapidly removed, no inflaming or blasting is caused, no volatilization is caused, corrosion to a base material is low, the price is low, and use is convenient.

Description

technical field [0001] The invention relates to a rust remover, in particular to a rust remover capable of improving metal corrosion resistance. Background technique [0002] With the development of the steel industry and steel manufacturing industry, the problem of steel corrosion has become increasingly prominent. The weight of metal materials and equipment scrapped due to corrosion every year in the world is about 20%-30% of the annual output of metal, up to 1×10 8 t above. Before taking various anti-corrosion measures on metal products, rust removal is a necessary process step. The current rust removal methods mainly include mechanical methods and chemical methods. The mechanical method is manual knocking, grinding and sandblasting. The disadvantages are high labor intensity, low efficiency, serious dust pollution, and limited by the shape of the component, it is difficult to clean the rust on the edges, corners, concave corners and the inner diameter of the thin tube....

AI Technical Summary

Problems solved by technology

Therefore, the current chemical method is difficult to apply in industries with high requirements, especially shipbuilding and other industries that derust large workpieces.