Sam Zhang is a Process Engineer at Aunov with 14 years in metal deep drawing and drawing-based forming. He leads process development and tool/die commissioning across product formability analysis, draw-process design, CAE simulation, and trial-run tuning. His work covers cold drawing, hot drawing, multi-stage drawing and ironing, tooling for drawing/forming/trimming/flanging/calibrating, FLC-based springback compensation and wrinkle prediction, sheet material selection, press-line process planning, lubrication, and defect resolution (cracking, wrinkling, springback, scoring, strain lines).
Direct answer: Thirty consecutive pieces were measured on a Ø24.0 ± 0.5 mm feature with a 0.01 mm caliper. Mean 24.085 mm, standard deviation 0.0303 mm, giving Cp 5.51 and Cpk 4.57. The numbers are real and the arithmetic is correct — but a Cpk above 4 is a statement about the tolerance band, not a boast about the process. Below are all 30 readings,…
Deep Drawing Calculators Three quick tools for DFM review: press tonnage, blank size with draw ratio, and blank weight — using AUNOV measured limiting draw ratios. Direct answer: Use press tonnage to size the press (blanking force plus drawing force, times a safety factor), blank diameter to check the draw ratio against the material’s limiting…
Deep Drawing Force & LDR Calculator Enter the material and geometry to get the maximum draw ratio, estimated drawing force, and safe wall-thinning limit — based on AUNOV measured LDR data, not generic ranges. Material DC04 (low-carbon steel)304 stainless steel5052 (5xxx aluminium)6061-T4 (6xxx, shallow only)Other / custom UTS (MPa) — auto-filled, editable Blank diameter D₀…
Deep drawing turns flat sheet metal into seamless cup, shell, tube, and box-shaped components in a single press stroke — or a short sequence of draws. It is one of the most material-efficient ways to make stainless steel and aluminum enclosures, sensor housings, and structural shells. But the process lives on a knife-edge between controlled…
Deep drawing defects are the forming failures — wrinkling, cracking and earing — that appear when material flow, tool geometry or press settings fall out of balance. They show up most on parts with wall thicknesses from 0.15 to 3.0 mm, where the gap between a clean draw and a reject can be a fraction…
Same print, three very different prices? A die engineer explains what actually drives stainless steel deep drawing quotes.
Stamping cuts and bends sheet, deep drawing flows it into a seamless shell, die casting freezes molten alloy in a cavity. This guide compares tolerances, tooling cost and the annual volume where each one breaks even.
Why Small Parts Deserve a Different Design Lens Small deep drawn parts are components under roughly 20 mm in diameter formed by the same drawing physics as large shells, but with far tighter tolerances. Deep drawing small parts — say under 20 mm in diameter — follows the same physics as large shells, but the…
Why Material Choice Drives the Whole Process Material selection for deep drawing is the decision of which alloy to form, because the metal sets the draw ratio, the number of redraws and the scrap rate. In deep drawing, the metal is not a passive input — it decides the draw ratio, the number of redraws,…
Why Deep Drawn Parts Cost Less to Make Deep drawing is a metal forming process that shapes a flat blank into a seamless part in one press line. Because one blank becomes one part, material use stays high and minimum order quantities are typically around 1,000 pieces, so the unit-cost advantage grows with volume. When…
