Springback in stainless bending: why the angle is off and how to compensate

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bending · springback · tooling · process

Springback comes from elastic recovery and depends on grade, temper, radius and die opening. Compensate with overbending, tooling and process control — not just more force.

Springback after bending stainless is a common issue. Causes and countermeasures:

1) Cause: elastic recovery of the material; austenitic grades (304) work-harden noticeably and spring back more than mild steel; larger radius, wider V-die opening and thicker sheet increase springback.
2) Compensation:
   • Overbend: bend 1°–3° beyond target and let it spring back.
   • Tooling: adjust the V-die opening and punch radius.
   • Process: bend in stages, control bending speed and dwell time.
   • Material: harder tempers spring back more; consider softer temper or design changes.
3) Measurement: check the first piece with an angle gauge or template, then sample during production; springback can vary by heat, so re-try after a material change.

Note: bending cracks are often linked to too small a radius, burr orientation and hard temper; the radius should be a reasonable multiple of thickness for the grade and condition, verified by bend tests.

Write the bending parameters into the work instruction and approve the first piece before mass production.

本文由 SteelWe 编辑与行业专家整理，内容仅供行业交流参考，不构成交易或投资建议。引用请注明来源。

Springback in stainless bending: why the angle is off and how to compensate

Springback comes from elastic recovery and depends on grade, temper, radius and die opening. Compensate with overbending, tooling and process control — not just more force.

Springback after bending stainless is a common issue. Causes and countermeasures:

1) Cause: elastic recovery of the material; austenitic grades (304) work-harden noticeably and spring back more than mild steel; larger radius, wider V-die opening and thicker sheet increase springback.
2) Compensation:
   • Overbend: bend 1°–3° beyond target and let it spring back.
   • Tooling: adjust the V-die opening and punch radius.
   • Process: bend in stages, control bending speed and dwell time.
   • Material: harder tempers spring back more; consider softer temper or design changes.
3) Measurement: check the first piece with an angle gauge or template, then sample during production; springback can vary by heat, so re-try after a material change.

Note: bending cracks are often linked to too small a radius, burr orientation and hard temper; the radius should be a reasonable multiple of thickness for the grade and condition, verified by bend tests.

Write the bending parameters into the work instruction and approve the first piece before mass production.

本文由 SteelWe 编辑与行业专家整理，内容仅供行业交流参考，不构成交易或投资建议。引用请注明来源。