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管材折弯展开计算器

使用中心线半径和折弯角度输入计算圆管和方管折弯后的展开长度。支持多弯序列、材料K因子、最小半径和薄壁警告。

1 · Tube Profile & Material

2 · Tube Dimensions

Tube Outside Diameter

Wall Thickness T

K-factor

Units

3 · Bend Sequence (straights & bends in order)

Segment 1 …Straight

Straight Length L

Segment 2 …Bend

Bend Angle θ

Centerline Radius R (CLR)

Segment 3 …Straight

Straight Length L

Total Developed Length

318.44 mmσ net straights + σ bend allowances

σ Bend Allowance120.84 mmσ θ × (R + K·T)

σ Net Straights197.6 mmL −tangent offsets

OD / T ratio15.4:1round >25 / square >20 warns

All bends within recommended radius limits for this material.

Bend allowance uses the neutral-axis method BA = θ × (R + K×T). Tangent offsets R × tan(θ/2) are removed from adjacent straights. Confirm with a trial bend …"springback and mandrel choice affect the final result.

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