II. Product Features
(I) Core Advantages
1. High strength and toughness: Using cold-rolled steel with a tensile strength of 300-500MPa, the strength is increased by 15%-25% after stamping and cold working hardening, and the deformation resistance is excellent. For example, the chassis bracket of the automobile can withstand heavy load impact without deformation.
2. High-precision adaptation: The mold processing accuracy is controlled at ±0.05mm, and the hole position and bending angle of the stamping parts are matched with the equipment design 1:1, realizing seamless integration of electrical components and mechanical structures, and facilitating rapid assembly of automated production lines.
3. Balance between cost and efficiency: Cold-rolled steel raw materials are easy to obtain, and the stamping process is continuous and efficient (a single device completes 10-30 forming times per minute). Compared with the cutting process, the production cost is reduced by 30%-40%, which is suitable for large-scale mass production.

(II) Feature Comparison Table

Comparison dimension	Cold rolled steel sheet metal stamping parts	Hot rolled steel stampings	Value realization
Precision control	±0.05mm	±0.2mm	Ensure high-precision integration of equipment
Strength performance	Strength after cold work hardening↑15% - 25%	No strengthening effect	Improve equipment durability
Production efficiency	10 - 30 pieces / minute	5 - 10 pieces/minute	Adapt to large-scale orders
Raw material cost	Low cost (easy to purchase)	High cost	Reduce production costs

III. Product Details
(I) Process Flow
1. Raw Material Pretreatment: Select SPCC cold-rolled steel plate (thickness 0.5 - 3.0mm), and then flatten, level, degrease and rust remove to ensure the flatness (≤0.1mm) and cleanliness of the plate, laying the foundation for precise stamping.
2. Mold Design: Based on the product 3D model, design a multi-station progressive die, integrating blanking, punching and bending functions, and undergo EDM and nitriding treatment (mold hardness HRC58 - 62), with a service life of over 800,000 times, ensuring the consistency of batch parts.
3. Stamping: On a 100 - 800T servo punch press, use continuous die stamping to form complex structures (such as hollowing out the housing of electronic equipment and curved bending of automotive parts) in one go, and simultaneously complete M3 - M6 threaded hole tapping and riveting nut implantation.
4. Surface treatment: optional galvanizing (salt spray test 720 hours), spraying (customized color, coating thickness 60-80μm), blackening (enhanced wear resistance), adapted to different working conditions for corrosion protection and aesthetics.
(II) Typical application scenarios
 Electronic equipment: manufacturing computer cases and server shells, high-precision punching holes adapted to motherboard and interface installation, galvanizing treatment to resist the humid environment of the computer room, and ensure the stable operation of the equipment 7×24 hours.
 Automobile industry: processing seat frames and door reinforcements, cold-rolled steel high-strength support body structure, stamping lightweight design (hollow, thin wall), help automobile weight reduction and energy saving, such as a new energy vehicle model, a single vehicle uses 15-20 kinds of cold-rolled steel stamping parts.
 Medical equipment: production of operating bed brackets and monitor shells, spraying treatment to meet the cleaning requirements of the medical environment, precise bending and hole positions to ensure the accuracy of equipment operation, such as operating bed brackets, bearing 200kg without deformation.
(III) Quality Control System
Implement "three-level quality inspection": full-size inspection of the first piece in three coordinates, process inspection to monitor mold wear and product size every 2 hours, 100% of finished products pass the pass/no-go gauge, and salt spray/tensile sampling test. Comply with ISO 9001 and IATF16949 standards, key parts pass GB/T 13914 metal stamping parts inspection, laying a solid "steel foundation" for industrial equipment.