Shanxi Jianing Forging has gathered real-world cases of wind power flange rings, ring gears, bearing rings, roller rings, and other ring landings, with a complete range of finished forging products for carbon steel, stainless steel, and alloy rings, providing reference for product selection and non-standard solutions.
A hydraulic equipment factory in Changsha, Hunan, set high requirements for dimensional accuracy, internal structural uniformity, and surface finish of annular forgings when producing key components for large hydraulic cylinders. The factory originally used traditional casting processes, but castings often had defects such as porosity and segregation, resulting in large machining allowances and high scrap rates, which affected project delivery times.
The customer faced three main pain points: First, the concentricity of the inner and outer diameters of the ring forgings was difficult to control within 0.5mm, resulting in prolonged subsequent turning processes; second, the internal grains of the forgings were coarse, failing to meet the fatigue life requirements of hydraulic cylinders under high-pressure conditions; third, the original supplier's delivery cycle was unstable, often delaying assembly progress due to machining rework.
To address these pain points, we offer customized ring forging solutions. First, a fine ring rolling process is adopted, with multiple consecutive rollings that evenly distribute metal streamlines along the circumferential direction, effectively eliminating casting microstructure defects, and the concentricity of the finished product remains stable within 0.3mm. Second, the forging temperature and deformation rate process parameters have been optimized to achieve grain size above grade 7, thereby improving the material's fatigue resistance. Finally, a full-process quality tracking system was established from cutting and heating to finished products, reducing the single-piece delivery cycle to 15 days and committing to one-dimensional inspection, which reduced the customer's post-processing costs and time loss.
