The air valve body is an important industrial equipment, and its material selection and manufacturing process directly affect the performance and service life of the equipment. This article will introduce the manufacturing process of the air valve body from two aspects: material selection and manufacturing process.
1. Material selection
The material selection of the air valve body needs to consider factors such as the material's mechanical properties, corrosion resistance, and cost. Commonly used materials include cast iron, cast steel, stainless steel, etc. Among them, cast iron has good casting performance and wear resistance, and its cost is low, but its strength is low and it is suitable for low-pressure air valve bodies. Cast steel has high strength and wear resistance and is suitable for medium and high pressure air valve bodies. Stainless steel has good corrosion resistance and oxidation resistance, and is suitable for air valve bodies working in corrosive gas or high temperature environments.
2. Manufacturing process
The manufacturing process of the air valve body mainly includes material selection, blank manufacturing, heat treatment, finishing and other links.
Material selection: Select appropriate materials according to product requirements, and test chemical composition and mechanical properties.
Blank manufacturing: The blank of the air valve body is manufactured by casting or forging, and non-destructive testing and heat treatment are performed to ensure the quality and performance of the blank.
Heat treatment: Heat treatment is performed on the blank to improve the mechanical properties and wear resistance of the material. Commonly used heat treatment methods include normalizing, quenching, tempering, etc.
Finishing: Use mechanical processing, grinding and other methods to finish the blank to meet the dimensional accuracy and surface quality requirements of the product. During the finishing process, it is necessary to ensure the sharpness of the tool and the rationality of the processing parameters to avoid processing defects and stress concentration.
3. Key points of process
The key points of the air valve body manufacturing process include quality control of each link, optimization of processing technology, implementation of special processes, etc. For example, in the casting process, the pouring temperature, speed and mold filling capacity need to be controlled to ensure the density and structural uniformity of the casting; in the heat treatment process, the heating temperature, time and cooling rate need to be controlled to ensure the structure and performance of the material; in the precision The processing link needs to control the wear of the tool and the stability of the processing parameters to ensure the processing accuracy and quality stability of the product.
4. Case analysis
Take a company's high-pressure air valve body as an example. This product is made of cast steel and is manufactured using a combination of casting and machining. In the casting process, vacuum pouring and sand casting technology are used to ensure the density and structural uniformity of the castings. In the heat treatment process, quenching and tempering processes are used to improve the mechanical properties and wear resistance of the material. In the finishing process, CNC machine tools and grinders are used for processing and grinding to ensure the dimensional accuracy and surface quality requirements of the product. The performance and quality of the final product are recognized by customers.
5. Conclusion
The material selection and manufacturing process of the air valve body directly affect the performance and service life of the equipment. In terms of material selection, factors such as the material's mechanical properties, corrosion resistance, and cost need to be considered; in terms of manufacturing processes, it is necessary to strictly control the quality of each link, optimize the processing technology, and implement special processes. Only reasonable material selection and exquisite manufacturing technology can produce high-quality air valve body products to meet the needs of industrial production.
