Anti-rust treatment of automobile parts in production proces



Antirust treatment of automobile parts is an important link to ensure its service life and improve the performance of the whole vehicle. In the complex use environment and long-term working conditions, metal parts are easily corroded, which leads to problems such as mechanical performance degradation and appearance damage, and even affects driving safety in serious cases. Therefore, it is very important to take effective anti-rust measures in the production process of automobile parts.

1. The importance of rust prevention

Prolonged service life: By preventing or slowing down the oxidation reaction on the metal surface, the aging speed of parts can be effectively delayed.

Improve safety: ensure that key parts such as brake system are not affected by corrosion, and ensure the safety of vehicles.

Maintenance of aesthetics: Good anti-rust effect can maintain the original color of parts and enhance the competitiveness of products.

Reduce maintenance cost: reduce the problems caused by corrosion and avoid the economic burden caused by frequent replacement of parts.

2. Common rust prevention methods

Surface treatment technology

Electroplating layer: zinc, nickel and other metals are used as protective layers to cover the substrate, forming a dense barrier.

Chemical conversion film: a chemical reaction is used to form a compound film with anticorrosion effect on the metal surface.

Painting process: protective coating is applied to the surface of parts by spraying and dipping, and commonly used are epoxy resin paint and polyurethane paint.

Physical isolation method

　　Plastic wrapping: For some small pieces, they can be directly sealed* with plastic bags to isolate air from moisture.

Oil seal preservation: evenly spread lubricating oil on the metal surface to form a thin oil film, so as to achieve the purpose of short-term rust prevention.

3. Precautions

-When choosing a specific rust prevention scheme, the influence of material characteristics, processing conditions and expected service environment should be considered;

-Special protection should be strengthened for rust-prone parts, such as joints and threaded holes;

-Regularly check and timely supplement or replace the ineffective anti-rust measures to ensure continuous effectiveness;

-Considering the requirements of environmental protection, low-toxicity and pollution-free antirust agent and process flow are preferred.

In a word, reasonable antirust treatment is not only related to the quality control of automobile parts, but also one of the manifestations that manufacturers are responsible to consumers. With the development and application of new materials and technologies, the future anti-rust measures will be more diversified and efficient, which will bring more room for progress for the automobile industry.