For parts with a fixed shape and high demand, die stamping provides the highest production efficiency and the lowest cost per unit. Stamping can perform various deformations such as blanking, drawing, flanging, and coining. It is suitable for combining with bending to complete complex three-dimensional shapes and is the core process for mass production of automotive parts, home appliances, and equipment components.
Process Overview
Stamping production relies on dies: blanking dies complete blanking and punching, while forming dies complete drawing, flanging, and coining. Our stamping lines are equipped with presses of different tonnage, combined with automatic feeding systems to achieve continuous blanking; drawn parts use double-action presses and blank holders to control material flow, prevent wrinkling, and avoid rupture. Dies are maintained and serviced by our in-house team, ensuring high stability during mass production.
Capability Parameters
- Suitable batch size: Recommended 1000 pieces or more to amortize die costs
- Formable features: Drawing, flanging, coining, ribs
- Material utilization: Can reach over 80% after nest optimization
- Forming materials: Cold-rolled steel, galvanized steel, stainless steel, aluminum sheet, copper strip
- Part dimensions: Maximum approx. 600 × 600 mm (depending on die)
Technical Highlights
The key to stamping quality is die design and material flow control: when drawing depth exceeds the material limit, bottom rupture or flange wrinkling is likely to occur. We suppress defects while ensuring depth through blanking force adjustment and lubrication optimization. Nest 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 routine patrol inspection systems, with periodic die edge sharpening and maintenance.
Typical Applications
Shapes requiring die replication, such as bowl-shaped parts, covers, clips, and grooves. When your part has a stable annual demand of over a thousand pieces and a largely unchanged shape, stamping is the lowest total-cost solution; for low demand or frequent shape changes, we recommend the flexible solution of laser cutting and bending.
Frequently Asked Questions
Die costs correlate with part complexity; simple blanking dies have lower costs, while complex multi-station dies are higher. When batch sizes exceed one thousand pieces, die costs amortized per unit are typically significantly lower than other processes. We provide complete cost calculations for dies and individual units to support your decision-making.
Not recommended. When batch sizes are below 500 pieces, die amortization is too high; in this case, we recommend the flexible solution of laser cutting and bending. When the product enters stable mass production, we will then evaluate whether to switch to stamping for further cost reduction.
Commonly 0.5–3.0 mm, with drawn parts generally not exceeding 2.0 mm. Specific thickness should be confirmed with our process team based on part depth and material plasticity.
Need a cost reduction evaluation for mass production parts? Welcome to provide drawings and annual consumption; we will provide stamping feasibility and cost comparison within 2 working days.