Spring rust cleaning liquid and rust cleaning process

Abstract

The invention relates to rust cleaning liquid used for cleaning rust on the surface of a spring and a process adopting the dust cleaning liquid to clean rust for the spring. The spring rust cleaning liquid consists of the following components in percentage by weight: 25%-45% of phosphoric acid, 5%-10% of ethyoxyl alkyl sodium sulfate, 30%-50% of acetone, 8%-15% of catechol and the balance of deionized water. The spring rust cleaning liquid is utilized to carry out rust cleaning on the spring, so that greasy dirt and a rust layer on the surface of the spring can be removed at the same time, a phosphating film also can be generated on the spring surface, and therefore, the process is simplified; the process is free of environmental pollution, free of any harm on operation staff, low in cost, high in rust-cleaning speed, free of corrosion on spring, long in rust-preventing time, and capable of strengthening binding force between the metal surface and the paint.

Description

technical field [0001] The invention relates to a derusting liquid for derusting the surface of springs and a process for derusting springs using the derusting liquid, in particular to a formula of derusting liquid and a derusting process thereof, belonging to metal anticorrosion or derusting technology field. Background technique [0002] During mechanical processing and subsequent processes, springs are prone to rust due to the influence of temperature, humidity and air medium in the atmospheric environment. Severe corrosion may affect the surface quality of spring electroplating, painting and other subsequent processes. Although anti-rust oil can be applied to the surface of machined springs to achieve the purpose of anti-rust, it is necessary to use gasoline and other solvents to remove the oil film on the spring surface before subsequent processes (such as electroplating, painting, etc.), and gasoline is flammable and volatile. It brings potential safety hazards to wor...

AI Technical Summary

Problems solved by technology

Although anti-rust oil can be applied to the surface of machined springs to achieve the purpose of anti-rust, it is necessary to use gasoline and other solvents to remove the oil film on the spring surface before subsequent processes (such as electroplating, painting, etc.), and gasoline is flammable and volatile. It brings safety hazards to the workshop production, and also increases the consumption of oil resources

Soaking in anti-rust water is also a common method of anti-rust in the process, but the commonly used anti-rust water contains chromate, nitrite and other components, which are more harmful to the environment and their use is restricted.