Forged flange blank

Liaocheng forging flange blanks: Liaocheng Tonghuang Machinery Parts Co., Ltd. mainly produces and sells flange blanks, stamped discs, hot expansion flange blanks, flange plates, stamped parts and other products, which can be customized and processed according to customer requirements.

LiaochengForged flange blankIntroduction:

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 is naturally cooled to 800-900 ℃ and maintained for 1-10 minutes; Cool with water to near room temperature, demold and remove the casting.

2. Forging 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 includes free forging, die forging, and membrane forging. During production, different forging methods should be selected based on the quality of the forgings and the quantity of production batches.

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

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

3. Forging processing technology:

The basic process of forging includes cutting, heating, pre forging, final forging, punching, trimming, quenching and tempering, and shot blasting. Common processes include upsetting, stretching, bending, punching, and forming.

4. Cutting flange processing technology:

Cut the inner and outer diameters and thickness of the flange directly from the middle plate, leaving room for processing, and then process the 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:

LiaochengForged flange blankThe process of cutting strips from medium plates and then rolling them into circles is called rolling, which is commonly used in the production of large flanges. After successful rolling, welding is carried out, then flattened, and the process of processing the water line and bolt holes is carried out.

Flat welding and butt welding are welders who connect flanges and pipelines. Flat welding flanges only require single-sided welding and do not require welding of the inner opening of the pipeline or the connection of the flange. The welding and installation of flange welding require double-sided welding of the flange. Therefore, flat welding flanges are generally used for medium and low pressure pipelines, and welding flanges are generally used for medium and high pressure pipeline connections. Welding flanges are generally at least 2.5 pounds per square inch, and butt welding is used to reduce stress concentration. Generally speaking, welding flanges are neck flanges, also known as threaded joint flanges. Therefore, the installation cost, labor cost, and auxiliary material cost of welding flanges are relatively high, because there is an additional process, and the production and use of flange plate welding have certain technical requirements and parameters, which are produced and processed according to certain methods and techniques: