Focus processes: fine blanking and thinning deep drawing
How thin a wall can deep drawing achieve?
Answer
When a drawn housing leaks, the cause is nearly always upstream of the leak. Ask three questions in order: was the wall thickness uniform after forming, was the material the right grade and temper for the reduction, and was the sealing face made as a controlled feature? A supplier who answers only the third has not looked at the part. How to specify tightness on the drawing State the requirement, not the test.
Sources
- Minimum Wall Thickness in Deep Drawing: Sensor HousingsHome › Engineering data › Wall thickness Engineering data · Process Wall Thickness in Deep Drawn Sensor Housings 256 configurations with a published wall thickness What is the minimum wall thickness in deep drawing?...
- Leak-Tight Deep Drawn Housings: What Decides It | BalfordWhen a drawn housing leaks, the cause is nearly always upstream of the leak. Ask three questions in order: was the wall thickness uniform after forming, was the material the right grade and temper for the reduction, and was the sealing face made as a controlled feature? A supplier who answers only t...
- What Balford Cannot Do: Stamping Limits | BalfordMaintain High Quality: We avoid the risk of failure on applications not suited to our equipment. Be Transparent: You can trust our quotes and lead times because they are based on realistic capabilities. We avoid the risk of failure on applications not suited to our equipment. Focus on Our Strengths:...
- Minimum Wall Thickness in Deep Drawing: Sensor HousingsThe minimum wall thickness in deep drawing - also called the minimum drawable wall - is set by the material, the draw ratio and the corner radius rather than by one catalogue figure, and it is not a single number even on one part: it follows the blank thickness in the first draw, thickens slightly a...
- 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 Drawn vs Progressive Stamping: Process Guide | BalfordSpecialized Equipment: Requires press and tooling setups specific to deep drawing, which limits the pool of shops that can actually run the process. Slower Production Speeds Common Defects in Deep Drawing Material Constraints Thinning: Predictable wall thickness reduction that you control by getting...
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
Next step. Send the drawing for a manufacturability review, or send the part data for a process and cost route.
Submit a drawing / RFQDFM review
Submit a drawing / RFQDFM review
Related questions
- What is fine blanking?
- Fine blanking vs conventional blanking: which should I specify?
- What edge quality does fine blanking achieve?
- Which materials and thicknesses suit fine blanking?
- What tooling does fine blanking need and what drives its cost?
- Fine blanking vs laser cutting vs machining for a flat functional part?
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.