Heat Treatment Processing of 4140 42CrMo Straight Section Drum Forging Riser Cylinder

Forging transforms solid metal from one shape to another through plastic forming, 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.

Select forgings by checking external dimensions and surface defects like cracks or bubbles. Internally, verify chemical composition, mechanical properties, and structure using specialized instruments to ensure no internal fractures or impurities exist.

The process includes pier roughening, elongation, punching, and expanding. Free forging uses a horse screw for hole expansion, while ring rolling uses rolling methods. Both methods ensure precise shape transformation.

The product uses structural carbon steel such as 45#, 4140, and 42CrMo. These materials offer high hardness, strength, and wear resistance after quenching and tempering treatments.

The product is certified under GB/T19001-2016 and ISO9001:2015 standards, ensuring quality management and product reliability for international markets.