Hot rolling forming method of stainless steel seamless steel tube
A seamless steel pipe and hot-rolled forming technology, which is used in the processing of stainless steel seamless steel pipes and the production of seamless steel pipes, can solve the problems of low metal yield, poor high temperature plasticity, and high manufacturing costs, and achieve good surface quality and short production processes. , The effect of less product grinding
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[0006] (1) The material of the seamless steel pipe is 304, and the product specification is φ159mm×12m.
[0007] (2) The billet used is rolled billet with a specification of φ180×1200mm.
[0008] (3) The blank is peeled, inspected and ground.
[0009] In order to ensure the rolling precision of the steel pipe, the tube blank is peeled or externally ground to ensure that there are no cracks, scars and other defects on the surface of the round billet.
[0010] (4) Blank heating
[0011] Φ180 tube blank heating system
[0012]
Preheating section
Heating section
soaking section
0~850℃
850~1170℃
1170~1150℃
130~150 points
50~60 minutes
25~40 minutes
[0013] (5) perforation
[0014] 219 cone-type two-roll piercing machine is used for piercing. The material of the roll is 60Mn, the material of the guide plate is high-chromium cast iron, and the material of the plug is molybdenum-...
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