Closed Die Forgings
What Are Closed Die Forgings?
Closed Die Forging, also known as impression die forging, is a manufacturing process where a heated metal billet is placed between two or more dies that contain a precut profile of the desired part. The dies are then forced together under high pressure, causing the metal to flow and completely fill the die cavities. The excess metal flashes out from the die parting line, forming a “flash” which is later trimmed off. This process produces near-net-shape parts with high dimensional accuracy and superior mechanical properties
Key Characteristics of Closed Die Forgings
High Strength and Durability: The forging process refines the metal’s grain structure, resulting in enhanced strength, toughness, and fatigue resistance.
Superior Structural Integrity: Parts have continuous grain flow that follows the part’s contour, eliminating porosity and inclusions.
Close Tolerances and Detailed Features: Allows for the production of complex geometries with fine details, reducing the need for extensive secondary machining.
Material and Cost Efficiency: Although the initial die cost is involved, it is highly economical for high-volume production due to minimal material waste.
Common Industries and Forged Parts
Closed die forgings are critical components across various heavy-duty industries:
Automotive: Crankshafts, connecting rods, gears, axle beams
Aerospace: Turbine disks, landing gear components, engine mounts, structural members
Oil & Gas: Valves, fittings, drill bits, wellhead equipment, flanges (
Agricultural Machinery: Gears, shafts, plowshares, harvester components
Industrial Machinery: Heavy-duty gears, rollers, press frames, hydraulic cylinders
Materials We Use for Closed Die Forgings
Carbon Steel: Low, medium, and high carbon steels for a balance of strength and cost.
Alloy Steel: Such as 4140, 4340, offering high strength, wear resistance, and toughness.
Stainless Steel: Grades like 304, 316, 410 for excellent corrosion resistance.
Aluminum Alloys: Lightweight with good strength-to-weight ratio
Titanium Alloys: High strength, lightweight, and exceptional corrosion resistance, ideal for aerospace.
Benefits of Choosing Closed Die Forgings
Enhanced Mechanical Properties: Superior impact and fatigue strength compared to castings or machined parts.
Reliability in Critical Applications: Consistent quality and performance, essential for safety-critical components.
Long-Term Cost Savings: Durable parts lead to less downtime and longer service life, reducing total cost of ownership.
Design Flexibility: Capable of producing a wide variety of complex shapes and sizes.
Custom Closed Die Forgings Service
We specialize in manufacturing custom closed die forgings tailored to your specific needs. Our engineering team works closely with clients from the design stage to final production. We can adjust parameters such as material selection, dimensional tolerances, heat treatment, and surface finish to ensure the final part meets your exact performance and application requirements. Submit your drawings and specifications for a prompt quote