Five kinds of flange processing technology steps
1、Casting flange processing technology:
Put the selected raw material steel into the medium frequency electric furnace melting, so that the steel temperature reaches 1600-1700 ℃; preheat the metal mold to 800-900 ℃ to maintain a constant temperature; start the centrifuge, inject the steel into the preheated metal molds; castings naturally cooled to 800-900 ℃ to maintain 1-10 minutes; use water to cool to Close to room temperature, take out the casting from the mold.
2、Forging flange processing technology:
Forging process generally consists of the following procedures, namely, selecting high-quality billets for discharging, heating, molding, and cooling after forging. The process methods of forging are free forging, die forging and tire film forging. Production, according to the size of the quality of the forgings, the number of production batches to choose a different forging method.
Die forging parts of high dimensional accuracy, small machining allowance, forging fiber tissue distribution is more reasonable, can further improve the service life of the parts.
The basic process of free forging: free forging, the shape of the forging is through some basic deformation process will be billet gradually forged. The basic processes of free forging are upsetting, drawing, punching, bending and cutting.
3, die forging process:
The basic process of die forging die forging process: material, heating, pre-forging, final forging, punching even skin, cutting edge, tempering, shot blasting. Commonly used processes are upsetting, pulling long, bending, punching, molding.
4、Cutting flange processing technology:
In the center plate directly cut out the flange to leave the processing amount of internal and external diameter and thickness of the disk, and then the bolt hole and waterline processing. The flange produced in this way is called cut flange, the maximum diameter of such flange is limited by the width of the center plate.
5、Rolling flange processing technology:
The process of cutting strips with center plate and then rolling them into round is called rolling, which is mostly used in the production of some large flanges. After the success of rolling, welding, and then flatten, and then the water line and bolt hole processing technology.
