The shovel manufacturer tells you the rust removal method of shovel

The shovel manufacturer tells you the rust removal method of the shovel:

1. Physical method:

It is mainly used for derusting, such as sandpaper, grinding wheel, wire brush, steel ball, etc.

2. Chemical method:

It mainly uses acid to react with rust, so as to achieve the purpose of rust removal.

The common rust remover in life is mainly composed of hydrochloric acid and dilute sulfuric acid, which will react with iron oxide. They penetrate into the surface of steel products along the cracks of the rust layer and impurity layer, dissolve and peel the rust layer and impurity layer, and make the rust layer, impurity and oxide skin fall off from the surface of steel products.

Precautions for rust removal:

1. The acid is corrosive. Wear protective clothing when removing rust. In addition, acid and iron will produce hydrogen, which will explode once an open fire occurs. Therefore, fireworks are prohibited during rust removal.

2. Hydrochloric acid and dilute sulfuric acid can react with iron oxide. Four factors are mainly considered in the selection: rust removal effect, acid production cost, acid transportation and storage, safety and environmental protection in use.

3. Substituting citric acid for hydrochloric acid and dilute sulfuric acid can solve the problem of environmental pollution caused by rust remover at present, and glycerin can strengthen the adhesion of rust remover to metal surface. The rust remover not only has the rust removal function, but also has the rust prevention function.