Case Summary

A chemical equipment factory in Yulin, Shaanxi, needed a batch of large-size cylindrical forgings as core pressure-bearing components when producing high-pressure reactors. The factory sets high requirements for the internal quality, dimensional accuracy, and delivery time of forgings to help ensure safe operation under harsh conditions.

Customer pain points

Customers face the following challenges during the procurement process:

• The wall thickness of the barrel forgings is relatively large, making conventional forging processes difficult to achieve uniform internal structure, which easily leads to defects such as loosening and segregation;
• Post-forging heat treatment requires strict performance indicators and meets specific mechanical performance indicators, but the original supplier has performed poorly in terms of performance stability;
• The project schedule was tight, requiring the complete process from blanks to rough machining in a short time, posing challenges to production scheduling capacity.

Product advantages

To address these pain points, we have provided systematic solutions:

• Utilizes multi-directional forging technology combined with a reasonable forging ratio design to effectively eliminate microstructural defects in the cast state, achieving internal density and uniformity;
• Optimizing the heat treatment curve, with more accurate phase change control through normalizing + tempering processes, helping to stabilize mechanical properties and meet customer drawing requirements;
• Relying on our own large forging press and supporting heat treatment furnace, we operate continuously 24 hours a day, ultimately completing delivery three days ahead of schedule, with a first-time pass rate of 1.

This batch of cylinder forgings has undergone third-party nondestructive testing and physicochemical testing by the customer, with all indicators meeting NB/T 47008 and customer internal control standards. It has now been successfully assembled into the equipment and is running smoothly.