Do you know the manufacturing process of stainless steel seamless elbow? The manufacturing processes of stainless steel seamless elbows include hot rolling and cold drawing, and the cold drawn tubes can also be subdivided into round tubes and special-shaped tubes.
Stainless steel seamless elbows are mainly used in pipe bends, which account for 80% of all pipe fittings used in piping systems.
So when it comes to the manufacturing process of stainless steel seamless elbows, the forming processes used for elbows of different materials and wall thicknesses are also different. Generally, the forming processes for manufacturing stainless steel seamless elbows include hot pushing, stamping, extrusion, etc.
The raw material for rolling stainless steel seamless elbow pipe fittings is a round tube billet. The round tube billet is first cut by a cutting machine, processed into a billet with a length of about 1m, and sent to the furnace for heating by a conveyor belt. The heating temperature is controlled at about 1200°C, and the fuel used is hydrogen or acetylene. The temperature control in the furnace is a key issue. After the round tube is released from the furnace, it must be pierced by a pressure piercer.
The common piercing machine is the cone roll piercing machine. This piercing machine has relatively high production efficiency, good production quality, large perforation diameter expansion, and can wear a variety of pipe fittings. After piercing, the round tube billet will be successively cross-rolled, continuous rolled or extruded by three rolls. After extrusion, the pipe needs to be taken off for sizing, and the sizing machine is rotated at high speed into the billet to punch holes to form pipe fittings.