Introduction to the machining process steps of five types of flanges

　　Do you know the machining process steps for flanges? Today, the flange manufacturer will introduce you to the processing technology of five types of flanges!

　　1. Casting flange processing technology:

　　Put the selected raw material steel into an intermediate frequency electric furnace for melting, so that the temperature of the molten steel reaches 1600-1700 ℃; Preheat the metal mold to 800-900 ℃ and maintain a constant temperature; Start the centrifuge and inject molten steel into the preheated metal mold; The casting should be naturally cooled to 800-900 ℃ and kept for 1-10 minutes; Cool with water to near room temperature, demold and remove the casting.

　　2. Forged flange processing technology:

　　The forging process generally consists of the following steps: selecting high-quality steel billets for cutting, heating, forming, and cooling after forging. The forging process methods include free forging, die forging, and membrane forging. During production, different forging methods are selected based on the quality of the forgings and the number of production batches.

　　The dimensional accuracy of die forgings is high, the machining allowance is small, and the fiber structure distribution of forgings is more reasonable, which can further improve the service life of parts.

　　The basic process of free forging: During free forging, the shape of the forging is gradually forged into the billet through some basic deformation processes. The basic processes of free forging include upsetting, elongation, punching, bending, and cutting.

　　3. Die forging processing technology:

　　The basic processes of die forging include cutting, heating, pre forging, final forging, punching and connecting, trimming, quenching and tempering, and shot peening. Common processes include upsetting, elongation, bending, punching, and forming.

　　4. Cutting flange processing technology:

　　Directly cut the inner and outer diameters and thickness of the flange on the middle plate, and then proceed with the processing of bolt holes and water lines. The flange produced in this way is called a cut flange, and the maximum diameter of this type of flange is limited to the width of the middle plate.

　　5. Rolling flange processing technology:

　　The process of using a medium plate to cut strips and then roll them into a circle is called coiling, and is often used in the production of some large flanges. After successful rolling, welding is carried out, then flattening is carried out, followed by processing of water lines and bolt holes.