Forged Step Shaft Forging for Hydraulic Machinery

Forging transforms solid metal into another shape through plastic deformation, while casting transforms liquid metal into a solid shape by pouring it into a mold. Forging improves mechanical properties, whereas casting focuses on melting and pouring processes.

High-quality forgings are selected by checking external dimensions and surface defects (cracks, wrinkles) and internal properties like chemical composition, mechanical strength, and hardness using specialized instruments for high-magnification inspection.

The process includes pier roughening, elongation, punching, and expanding. Ring rolling uses rolling to expand holes, while free forging typically uses a horse screw for the same purpose.

The primary material is 45# carbon structural steel, which offers low price, good cutting performance, and high hardness after quenching and tempering. Other alloys like 42CrMo are also available.

Yes, flexible customization is available including shapes (Round Bar, Square, Shaft, etc.), sizes, surface treatments, and alloy numbers based on customer designs or samples.