Deep drawing
When is reverse drawing or multi-stage drawing needed?
Answer
wrinkles in the flange, and those wrinkles travel into the wall Too high → material cannot flow, the wall stretches instead, and the part tears at the die radius On a deep drawing tool the blank holder pressure is adjustable, because the correct setting depends on the actual material lot, its thickness tolerance, and the lubricant. This is also why deep drawing tooling needs tryout time that press forming does not. Single draw, redraw, and the multi-stage deep drawing process When the required ratio exceeds the material's single-draw limit, the part is formed in stages: a multi stage deep drawing process takes the blank through two or more draws, and each intermediate shape is called a redraw.
Sources
- Drawn Sheet Metal & Deep Drawing: Complete Guide | BalfordToo low → wrinkles in the flange, and those wrinkles travel into the wall Too high → material cannot flow, the wall stretches instead, and the part tears at the die radius On a deep drawing tool the blank holder pressure is adjustable, because the correct setting depends on the actual mate...
- Deep Drawn 5G Resonators & Microwave Components | BalfordHome › Metal Parts Stocks › 5G Resonators & Microwave Components In-Stock Deep Drawn & Stamped Parts Deep Drawn 5G Resonators & Microwave Components Published September 6, 2026 · Balford Stock & Sales Team Direct answer: Silver-plated and precision deep drawn resonators for 5G commu...
- Complex Deep Drawing | Precision Stamping - BalfordBlog › Metal Stamping › Precision Stamping Complex Deep Drawing in Precision Stamping Published: July 19, 2026 Process sequencing, reverse drawing, and material control for complex precision-formed components. Why complex drawing is difficult Deep drawing is already one of the more demanding stampin...
- Drawn Sheet Metal & Deep Drawing: Complete Guide | BalfordEach stage has to stay inside the material’s limiting draw ratio. When work-hardening closes that window, an intermediate anneal restores ductility before the next draw. Ratios fall after the first draw: second and later draws achieve less reduction than the first. Redrawing. A tall part is not simp...
- Deep Drawing Aluminium vs Stainless Steel: Tooling ChangesDecision Aluminium Stainless steel Draw ratio per stage More generous More conservative; more stages Die clearance Tighter relative control to limit burrs and marking Set to accommodate work hardening and springback Radii Larger radii reduce cracking risk Radii balance crack risk against thinning Lu...
- Deep Drawing Aluminium vs Stainless Steel: Tooling ChangesConfirm whether annealing is permitted, since it changes the process route Give the annual volume — the stage count only pays off at the right volume Key point A supplier who quotes aluminium and stainless at the same stage count has quoted the drawing, not the material. Frequently asked questions W...
What an engineer still needs from you
- material and material condition (grade, temper)
- material thickness, plus the key diameter, height and wall thickness
- tolerances, burr direction and the visual acceptance standard
- annual volume - it decides whether tooling is single-hit, progressive or transfer
- surface finish, and any secondary machining, annealing or plating
Submit a drawing / RFQDFM review
Related questions
- What is deep drawing?
- Deep drawing vs progressive die stamping: which process fits my part?
- What is the maximum deep draw diameter and press capacity?
- What draw ratio is possible in one deep drawing stage?
- How do I calculate the blank size for a deep drawn cup?
- How can I reduce cracking when deep drawing stainless steel?
This page is an engineering answer, not a quotation and not a dimensional acceptance. It is generated from Balford's published material and held to the verified company fact sheet.