Large forged rings often require machining after forging to achieve the final outside diameter, inside diameter, face thickness, grooves, shoulders, and functional surfaces. Shanghai Changjin Metal Product Co., Ltd. welcomes inquiries for custom forged components and CNC machining based on customer drawings.
Forging creates the near-net shape and forms the basic ring geometry. Machining brings the component to its specified dimensions and surface condition. Depending on the application, a customer may require rough machining for a later operation or finish machining for assembly.
A useful drawing should identify all critical dimensions, datum surfaces, geometric tolerances, surface-finish requirements, and any features that must remain accessible for inspection. It should also state the material grade, heat-treatment condition, and whether the dimensions are for the finished part. For large or heavy parts, handling and workholding are part of the process plan.
Large components can be affected by residual stress, temperature variation, clamping forces, and material condition. A suitable process may therefore separate rough machining from finish machining and include intermediate checks or stress-relief steps when required by the specification. Do not assume a tolerance is achievable until it has been reviewed against the part size, geometry, material, and inspection method.
The main cost drivers are material and blank preparation, setup time, the number of machining operations, metal removal, required accuracy, tooling, inspection, and quantity. A simple ring with standard tolerances is different from a ring with multiple sealing faces, deep bores, complex profiles, or extensive documentation requirements.
Send your technical drawing and inspection requirements for review. A complete RFQ helps the supplier evaluate the machining route and provide a more reliable quotation and lead-time estimate.
We also provide forging blanks and CNC precision machining services for our clients, covering industries such as energy, petrochemicals, steel, engineering machinery, plastics, prevention and control, hydraulics, healthcare, and food. Please feel free to send us drawings for inquiries.
Metalworking Services
CNC Machining
Sheet Metal Fabrication
Metal Welding
Metal Cutting
Metal Bending
Metal Punching
Metal Forging
Metal Sheet Rolling
Tube and Plate Drilling
Our heavy-duty forging presses support open-die forging and deformation of large-section forgings, including discs, shafts, blocks, and custom components. This capability enables us to meet the demanding forming requirements of heavy industrial applications.
Heat treatment is a critical step in achieving the mechanical properties required for heavy-duty forgings. Our process capabilities meet the strength, toughness, and structural stability requirements for forged components used under demanding operating conditions.
We offer machining capabilities for large forged shafts and long cylindrical components, supporting both rough and finish machining. This capacity is suitable for stepped shafts, rotor shafts, rollers, and other heavy-duty forged shaft components.
Our machining facilities are capable of handling large ring-shaped forgings and circular parts that require precise turning, face machining, boring, and contour control. This capability is suitable for industrial ring blanks, heavy-duty circular parts, and machined ring forgings.
We offer machining solutions for heavy-duty cylindrical, hollow, and tubular forgings. This capability supports the machining of sleeves, cylinders, and other thick-walled forged components used in pressure vessels, rotating systems, and general industrial applications.
Quality control is integrated into our production process through the inspection and testing of forged and machined parts. Our capabilities help verify the dimensional accuracy, condition, and quality consistency of industrial forgings prior to delivery.
Finished forgings are properly protected and packaged to minimize the risk of damage during storage and transportation. Our packaging methods ensure the safe domestic delivery and export shipment of machined and high-value forged components.
