Title: Design scheme of catalyst extrusion die
In today's era of increasing environmental awareness, automotive exhaust emission control technology is constantly improving, and the market demand for SCR (Selective Catalytic Reduction) technology as an efficient automotive exhaust treatment technology continues to grow. The purpose of this paper is to introduce a design scheme of catalyst extrusion die to provide technical support for the efficient production of SCR catalysts.
The SCR catalyst mold is a catalyst that is extruded under high pressure to form a catalyst of the desired shape and size. It is of great significance to design a set of efficient catalyst extrusion die to improve catalyst production efficiency and reduce costs.
Second, the mold design requirements
1. Mold material selection: Mold material should have good corrosion resistance, wear resistance, thermal conductivity and strength. Commonly used mold materials are stainless steel, tungsten steel, etc.
2. Mold structure design: The mold structure should be reasonable to ensure the stability of catalyst extrusion molding and reduce the error in the production process. The mold structure includes the mold body, the mold core, the mold jacket and other parts.
3. Mold dimensional accuracy: The mold dimensional accuracy directly affects the shape and size of the catalyst, and the manufacturing accuracy of the mold needs to be strictly controlled.
4. Mold cooling system: The design of the mold cooling system is essential to ensure the stability of the temperature during the catalyst extrusion process, which can be water-cooled or air-cooled.
Third, the mold design scheme
1. Mold body design: design the size, shape and structure of the mold body according to the requirements of catalyst extrusion molding. The mold body should have sufficient strength and stiffness to withstand the forces generated during high-pressure extrusion.
2. Mold core design: The mold core is a key part of catalyst extrusion, and its design needs to consider the shape, size and flow characteristics of the catalyst during the extrusion process. The design of the mold core should ensure the uniformity and stability of the catalyst extrusion molding.
3. Mold jacket design: The design of the mold jacket needs to consider its fit relationship with the mold body, the mold core, and the layout of the cooling system. The mold jacket should be designed to ensure tightness and cooling during the catalyst extrusion process.
4. Cooling system design: design the type, layout and parameters of the cooling system according to the temperature control requirements in the catalyst extrusion process. The design of the cooling system should ensure the uniformity and stability of the temperature during the catalyst extrusion process.
Fourth, mold manufacturing and acceptance
1. Mold manufacturing: Manufacture molds according to the design plan, and strictly control the manufacturing accuracy and quality of molds. High-precision processing equipment and processes should be used in the mold manufacturing process to ensure the dimensional accuracy and surface quality of the mold.
2. Mold acceptance: After the mold manufacturing is completed, strict acceptance is required, including the dimensional accuracy of the mold, surface quality, and the performance of the cooling system. After the mold is accepted, it can be put into production.
The design of the catalyst extrusion die is of great significance to improve the production efficiency and reduce the cost of SCR catalysts. Through reasonable mold design, manufacturing and acceptance, the quality and stability of catalyst extrusion can be ensured, and strong support can be provided for the development of automobile exhaust emission control technology.