Brightening rust remover

Abstract

The invention relates to a brightening rust remover. The brightening rust remover is composed of following components including, by weight, 45 parts to 60 parts of hydrochloric acid, 4 parts to 5 parts of phosphoric acid, 0.4 part to 0.6 part of hexamine, 0.4 part to 0.6 part of lauryl sodium sulfate, 0.15 part to 0.4 part of triethanolamine, 0.4 part to 0.6 part of citric acid, 0.5 part to 1.2 parts of oleic acid, 0.8 part to 1.6 parts of oxalic acid, 0.5 part to 3 parts of thiocarbamide, 3 parts to 10 parts of dihydroxysuccinic acid, 1 part to 6 parts of sulfamic acid and 20 parts to 70 parts of water. The agent is low in cost, can be used at the normal-temperature state, and is not likely to generate acid mist, friendly to the human body and the environment, extremely small in board damage and easy to operate.

Description

technical field [0001] The invention relates to a rust remover, in particular to a brightening rust remover. 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 more than t. 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. The chemical method has a seri...

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.