Stamping Defects Guide: Burrs, Cracks, Springback & Twist Fixes

Stamping Defects Guide: Burrs, Cracks, Springback & Twist Fixes

Short answer: Stamping defects — burrs from worn tools, cracks from brittle or too-cold material, springback from elastic recovery, twist and bow from uneven stress, and surface scratches from contaminated tooling — are the main yield killers in blanking, bending and deep drawing. Most are prevented by correct tool maintenance, material temper and process design: sharpen dies, anneal before severe forming, over-bend for springback, balance the draw, and keep tooling clean, with tolerances held per ISO fits and inspected by NDT.

At a Glance

Stamping Defects Guide: Burrs, Cracks, Springback & Twist Fixes chart
Figure 1 – Stamping Defects Guide: Burrs, Cracks, Springback & Twist Fixes overview.

Defect Causes & Fixes

Relate to Metal Stamping Vs Machining and Metal Burr Deburring Guide; compare Metal Deep Drawing Guide and Metal Roll Forming Guide.

Quality

Tolerance and surface checked per Metal Tolerances Fits Guide, certified by Mill Test Certificate Guide. Inspect by Metal Ndt Guide.

Supply & QA

Control springback via Metal Machinability Guide; protect via How To Prevent Metal Rust. HXSCO supplies stamping-grade coil and sheet.

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Tell HXSCO your requirements and we will respond with a competitive quote and lead time.

Frequently Asked Questions

What causes stamping burrs?

Dull or worn punches/dies; sharpen or regrind tooling.

Why do parts crack?

Brittle temper or forming too cold; anneal first.

How is springback fixed?

Over-bend past the target angle to absorb elastic return.

What causes twist/bow?

Uneven draw stress; balance the forming sequence.

Do you supply stamp stock?

HXSCO supplies draw-quality coil and sheet for stamping.

Source Stamping-Grade Metal from HXSCO

HXSCO supplies draw-quality steel, stainless and aluminium coil and sheet for clean stamping. Send your grade and temper for a quote.

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