Shanxi Jianing Forging can process large-diameter pressure vessel shell forgings made of carbon steel, stainless steel, and alloy steel. The station has a wealth of real-world cases of cylinder forging, fully demonstrating the forging capabilities of large-size cylinders and the corrosion-resistant results of finished products.
A ship equipment factory in Yancheng, Jiangsu has long been engaged in manufacturing marine supporting equipment, and its core component, the cylinder forging, must meet the stringent requirements of the marine environment. When seeking forging suppliers, the factory focuses on product dimensional accuracy, material density, and delivery cycles. After extensive investigation, Jianing Forging was ultimately chosen as the designated production unit for its tube forgings.
This customer faced multiple technical challenges in the processing of cylinder forgings: the cylinder walls were relatively thick and long, making conventional forging processes difficult to achieve uniformity on the inner and outer walls; Materials must possess both good corrosion resistance and mechanical strength to meet classification society standards; At the same time, the client's project schedule is tight, placing high demands on the delivery cycle for forgings blanks. Additionally, since the inner hole of the cylinder requires subsequent precision machining, it is recommended to keep the straightness and roundness deviation of the forging's inner surface within an extremely narrow range; otherwise, it will lead to insufficient machining allowance or material waste in subsequent processing.
Jianing Forging has provided a complete set of customized solutions to address these pain points. During the process design phase, the technical team combined multi-directional forging with temperature-controlled forging, effectively eliminating microstructural defects in the casting state and fully refining the internal grains of the forging. By optimizing the mold structure, nearly net forming of the large length-to-diameter cylinder is achieved, reducing subsequent processing workload. In material management, selecting high-quality alloy steel billets and strictly following heat treatment process curves helps stabilize mechanical properties. During production, full-size inspection is conducted, recording the inner and outer diameter, length, and wall thickness deviations of each forging piece by piece, and providing complete material and non-destructive testing reports before delivery. Ultimately, Jianing Forging completed delivery of all cylinder forgings within the agreed timeframe. The customer reported that the first-pass rate exceeded expectations, the internal hole machining allowance was uniform, and the defect rate in subsequent processes was reduced.
Through this collaboration, the ship equipment factory not only obtained stable quality cylindrical forgings but also established a long-term supporting relationship with Jianing Forging. Subsequent batches of cylinder forgings all followed the same process standards, continuously meeting the reliability requirements for core components of marine equipment.
