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.
In the field of metallurgical machinery, the quality of shaft forgings directly affects the stability and service life of equipment. During the replacement of key equipment spindles, a metallurgical machinery factory in Liupanshui, Guizhou, faced issues such as insufficient forging strength and uneven internal organization, resulting in frequent equipment shutdowns and persistently high maintenance costs. After extensive investigation, the factory ultimately chose to cooperate with Jianing Forging, adopting a customized shaft forging solution that successfully enhanced the overall performance of the equipment.
The original shaft forgings at this metallurgical machinery factory had three major pain points: First, slight shrinkage cavities and looseness inside the forgings, which easily cause fatigue cracks after long-term heavy load operation; Second, insufficient material hardenability leads to uneven shaft hardness distribution and accelerated wear; Third, traditional suppliers have long delivery cycles and large quality fluctuations, seriously affecting production line scheduling plans. These issues directly lead to shorter mean time between failures, increased spare parts replacement frequency, and rising annual maintenance costs year by year.
To address these pain points, Jianing Forging offers an integrated solution from material optimization to process control. First, using high-quality alloy steel materials and adjusting the chemical composition range helps with hardenability and temper stability; Second, the multi-directional forging process refines the grain structure, eliminates internal defects, and significantly improves the density and uniformity of the forging; Finally, a strict item-by-piece inspection process has been established, covering ultrasonic flaw detection, hardness gradient and mechanical property testing, ensuring that every shaft forging meets the customer's technical agreement requirements. After applying this solution, the plant's spindle service life was extended by nearly 40% compared to before, equipment downtime was reduced, and overall operating costs dropped significantly.
