Stainless steel seamless pipe hot rolling production process: pipe billet→heating→piercing→three-roll cross rolling, continuous rolling→pipe removal→sizing→cooling→straightening→hydraulic test→marking→warehousing
The raw material for rolling stainless steel seamless pipe is a round tube billet. The round tube billet is cut by a cutting machine into a billet with a length of about 1 meter, and sent to the furnace for heating by a conveyor belt. After the tube blank is out of the furnace, it must be pierced by a piercing machine. Generally, the more common piercing machine is the tapered roller steel pipe piercing machine. This kind of piercing machine has high production efficiency, good product quality, large perforation diameter expansion, and can wear a variety of steel types. After piercing, the tube blank is successively cross-rolled and continuous rolled by three rolls. After extrusion, the pipe must be taken off for sizing. The sizing machine rotates the conical drill at high speed into the steel billet to punch holes to form a steel pipe (the inner diameter of the steel pipe is determined by the length of the outer diameter of the sizing machine’s drill). After the steel seamless pipe is sized, it enters the cooling tower and is cooled by spraying water. After the steel pipe is cooled, it will be straightened. After the steel pipe is straightened, it is sent to the metal flaw detector by the conveyor belt for internal flaw detection. If there are cracks, bubbles and other problems inside the steel pipe, it will be detected. After the quality inspection is completed, the ss seamless tube will be packed into the warehouse.
