Catalytic Converter Production Process Detailed

Catalytic converter is a crucial off-machine purification device in the automobile exhaust system, its production process is complex and fine, and each step is directly related to the performance and quality of the product. This article will analyze the production process of the Catalytic converter in detail, and give you a full introduction and show the birth process of this high-tech product.

Carrier Preparation

The core component of the three-way catalytic converter is a porous ceramic or metal material as a carrier, which needs to have a high specific surface area and good thermal stability. Common carrier materials include Al₂O₃, SiO₂, and TiO₂ ₃. The main preparation methods are dry powder method, sol-gel method, impregnation method and so on. For example, when using the sol-gel method, the raw material is first dissolved in the solvent to form a solution, and then the gel is formed through chemical reactions such as hydrolysis and condensation, and then the porous carrier is made through drying, sintering and other steps.

Coating Catalyst

Coating the catalyst on the surface of the carrier is a key step in the production of the Catalytic converter. The catalyst is usually composed of precious metals (such as Pt, Pd, Rh, etc.) and a certain proportion of alumina, titanium oxide, etc. There are various coating methods, including dip method, rotary coating method, fluidized bed method, etc. Impregnation method is to immerse the carrier in a solution containing catalyst components, so that the solution penetrates into the pores of the carrier, and then through drying and sintering to make the catalyst firmly attached to the surface of the carrier.

Drying And Sintering

The carrier coated with the catalyst needs to be dried and sintered. The drying temperature is usually 100-200 ° C to remove moisture and solvents on the surface of the carrier. The sintering temperature is between 500-900℃, so that a strong chemical bond is formed between the catalyst coating and the carrier, ensuring that the catalyst can remain stable under high temperature and harsh conditions.

Assembly And Sealing

The dried and sintered carrier is loaded into a shell made of materials such as stainless steel or aluminum alloy, and then sealed with a sealing material to prevent acid in the tail gas from corrosing the catalytic converter. At the same time, the shell is also provided with a vibration damping layer, which is composed of a liner or a steel wire mesh pad, and plays the role of sealing, heat preservation and fixing the carrier.

Performance Test

During the production process, the Catalytic converter must be subjected to strict performance testing to ensure that it meets the relevant emission standards. The test items include conversion efficiency, durability, anti-poisoning performance, etc.

The production process of the Catalytic converter is a complex and fine process, with the continuous development of the automotive industry, the production process of the three-way catalytic converter will continue to innovate and improve to meet the more stringent environmental requirements.

In the trend and background of environmental protection, GRWA has successfully developed a Catalytic converter product with significant advantages by virtue of its profound technology accumulation and innovation ability. Our products use advanced catalytic materials and unique structural design, which can effectively extend the service life while ensuring efficient conversion. In addition, we offer customized solutions for different types of vehicles and engine characteristics to meet the diverse needs of our customers.