Tube Bending Techniques & Design

Basics of Tube Bending

I. BENDING TUBE WITHOUT A MANDREL

Stretching and Compression Principles

Function of Bend Die Basic

Primary Tooling Control of Springback

Buckled Bends

II. BENDING TUBE WITH A PLUG MANDREL

Balanced Pressures

Unbalanced Pressures

Mandrel Too Far Back

Mandrel Too Far Forward

III. BENDING WITH BALL MANDREL AND WIPER DIE

Bending Thin Wall Tubing

IV. TROUBLESHOOTING

Tube breakage

Tube wrinkling

Scratches/Marking on Tube Centerline

Tube Collapses Either With or Without Wrinkling Through Bend

Hump at the End of a Bend and Mandrel Ball Humps

Tool Marks/Scratches Excessive Springback

Possible Reasons for Link Failure

Final Tips

V. GLOSSARY OF TERMS

Calculator - Bend Tooling

Bending Die, Clamp, Wiper

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Colour	Chrome
Finish Type	Chrome Finish
Item Weight	92.0 grams

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