1. Surface cleaning: Cleaning must be carried out according to the nature of the surface of the anti-rust object and the current conditions, and an appropriate method must be selected. 

Commonly used are solvent cleaning method, chemical treatment cleaning method and mechanical cleaning method.

2. Surface drying After cleaning, it can be dried with filtered dry compressed air, or dried with a dryer at 120-170 ℃, or wiped dry with clean gauze.

3. Soaking method: Some small items are soaked in anti-rust grease, and the surface of the cross tapered roller bearing is allowed to adhere to a layer of anti-rust grease. 

The thickness of the oil film can be achieved by controlling the temperature or viscosity of the anti-rust grease.

4. Brushing method: It is used for outdoor construction equipment or products with special shapes that are not suitable for soaking or spraying. 

When brushing, pay attention not only to avoid accumulation, but also to prevent leakage.

5. Spraying method: Some large anti-rust objects cannot be oiled by immersion method, and the turntable bearings are generally sprayed with filtered compressed air at a pressure of about 0.7Mpa in clean air. 

The spray method is suitable for solvent-diluted anti-rust oil or thin-layer anti-rust oil, but perfect fire prevention and labor protection measures must be adopted.

It should be noted that the following acid solutions cannot be used for bearing rust removal: sulfuric acid, hydrochloric acid, dilute sulfuric acid, and dilute hydrochloric acid. 

Because these acids will destroy good metal parts, these types of liquids must not be used! 

In daily life, there are several liquids that can remove rust without harming good metal parts, but the effects are different. 

The first is dilute oxalic acid, and the ratio of water to water is 3:1, dilute oxalic acid 3, water 1. This one is slower, but it works great and is sold everywhere. 

The second is gun oil, also called mechanical derusting oil, which is not very easy to buy. This kind of oil can quickly derust, and the effect is very good.