Precision seamless steel pipes are forged or forged by traditional process furnace + ESR - > billet and rolling. The products are round rods, square plates and forgings. Then the steam turbine plant is further processed, but the shape of the processing technology is special, and the metal utilization rate after processing is about 30%. The post-production extrusion mode will have the following advantages:
1. Precision seamless steel tube is in the optimum stress state during hot extrusion, which reduces the internal defects of the product.
2. It is easy to realize various cross-section shapes, adapt to more varieties and produce in small batches.
3. Performance uniformity in each direction.


The main ways to produce extrusion process are EAF + ESR - > forging or rolling alveolus - > induction heating - > extrusion - > annealing.


The difference between extrusion and forging is that:
1. The heating temperature of precision seamless extrusion is 30-60 C higher than that of forging.
2. Deformation, high speed (deformed steel only needs 2-4S).
3. Multi-step, high metal consumption.