Shanxi Jianing Forging has collected real-world engineering cases of long shafts, short shafts, drive shafts, and marine nuclear power shaft forgings, fully showcasing the forging process of shaft forgings, finished product precision, and practical application scenarios for heavy equipment.
A hydraulic machinery factory in Huizhou, Guangdong encountered multiple technical challenges in shaft forgings procurement and, after extensive evaluation, selected Jianing Forging as the supplier. The factory mainly produces core components of hydraulic systems, with strict requirements for the strength, precision, and service life of shaft forgings. This case demonstrates the customized solutions provided by Jianing Forging for the forging needs of hydraulic machinery factories.
The original shaft forgings of this hydraulic machinery factory had the following issues:
1. Traditional forging processes lead to low material utilization and large machining allowances, increasing subsequent machining costs and time;
2. The internal structure of the forging is uneven, and after heat treatment, hardness fluctuates greatly, affecting the stability of the hydraulic shaft;
3. Some shaft parts show early fatigue cracks during use, leading to frequent equipment shutdowns and maintenance;
4. Supplier delivery times are unstable, making it difficult to match the lean production rhythm of hydraulic machinery factories.
After in-depth analysis of customer working conditions, Jianing Forging adopted the following targeted solutions:
1. Optimized forging die design, adopting a fine closed die forging process to keep machining allowances within a reasonable range, increasing material utilization by about 15%;
2. Introducing temperature-controlled forging technology combined with strict normalizing + quenching and tempering heat treatment processes helps achieve hardness uniformity in the HB220-260 range;
3. Through multi-directional forging and grain refinement processes, the fatigue resistance of shaft forgings is improved, with laboratory tests showing fatigue life over 30% longer than traditional methods;
4. Establish flexible production lines to prepare materials in advance according to customers' monthly plans, helping to keep delivery times within 7-10 working days.
