Material selection and process steps of metal deep drawing technology

The deep drawing process requires high ductility, tensile strength, and formability of materials, and commonly used materials include:

Low carbon steel (such as SPCC, DC04): Low cost, easy to process.

Stainless steel (such as 304, 316): Strong corrosion resistance, suitable for high demand scenarios.

Aluminum alloy (such as 3003, 5052): the preferred choice for lightweight requirements.

Copper and copper alloys: Good conductivity, used for electronic components.

Titanium alloy: high strength and high temperature resistance, used in aerospace.

Process steps

Mold design: The punch, die, and edge ring are key components that need to consider material flow, friction, and rebound.

Preparation of raw materials: Cut the metal sheet to the appropriate size and clean the surface.

Lubrication: Apply lubricant (such as oil, wax, or polymer coating) to reduce friction and wear.

First stamping: The punch presses the blank into the die to form a preliminary shape.

Multiple deep drawing (multi station or continuous die): For high aspect ratio parts, multiple stretching steps are required to avoid material breakage.

Edge trimming and shaping: Remove excess edges and calibrate dimensional accuracy.

Subsequent processing: heat treatment, surface electroplating, spraying, etc.