For parts with a fixed geometry and high volume requirements, die stamping offers the highest production efficiency and the lowest cost per unit. Stamping can perform various deformations including blanking, deep drawing, flanging, and local embossing/coinage. It is ideal for combining with bending to create complex three-dimensional shapes, serving as the core process for high-volume production of automotive parts, home appliances, and equipment components.
Process Overview
Stamping production relies on dies: blanking dies perform blanking and punching, while forming dies handle drawing, flanging, and boss formation. Our stamping lines are equipped with press machines of various tonnage capacities, combined with automatic feeding systems to enable continuous blanking. Drawn parts use double-action presses with drawing rings (blank holders) to control material flow and prevent wrinkling or tearing. Dies are maintained and serviced by our in-house team, ensuring high stability during mass production.
Capability Parameters
- Applicable Volume: Recommended for runs of 1000+ units to amortize die costs
- Formable Features: Drawing, flanging, embossing, reinforcing ribs
- Material Utilization: Can exceed 80% with optimized nesting
- Formable Materials: Cold-rolled steel, galvanized steel, stainless steel, aluminum sheet, copper strip
- Part Dimensions: Up to approximately 600 × 600 mm (depending on the die)
Technical Highlights
The key to stamping quality lies in die design and material flow control: when the draw depth exceeds the material limit, the bottom is prone to tearing or the flange to wrinkling. We suppress these defects while ensuring depth by adjusting blanking force and optimizing lubrication. Nesting design determines material utilization; we use specialized software for common-edge and nesting optimization to minimize scrap. During mass production, we implement first-article inspection and periodic patrol inspection systems, with regular die sharpening and maintenance.
Typical Applications
Parts that require die replication, such as cup-shaped components, housings/enclosures, clips, and slides. When your part has a stable annual demand of over 1,000 units and a consistent geometry, stamping is the most cost-effective solution. For low volumes or frequently changing geometries, we recommend the flexible solution of laser cutting and bending.
FAQ
Are stamping die costs high?
Die costs correlate with part complexity; simple blanking dies are lower cost, while complex multi-station dies are higher. Once volume reaches 1,000+ units, the amortized die cost per unit is typically significantly lower than other processes. We provide a complete cost estimation for both the dies and per-unit costs to support your decision-making.
Do you stamp small batches?
Not recommended. For batches below 500 units, die amortization is too high. In this case, we recommend the flexible solution of laser cutting and bending. Once the product enters stable mass production, we can re-evaluate switching to stamping to further reduce costs.
Which material thicknesses are available?
Commonly 0.5–3.0 mm; drawn parts generally do not exceed 2.0 mm. Specific thicknesses depend on part depth and material plasticity; please confirm with our engineering team.
Have a mass-produced part that requires a cost reduction assessment? Please provide drawings and annual volume; we will provide feedback on stamping feasibility and cost comparison within 2 business days.