Metal Bending Force Calculator

Metal Bending Force Calculation Tool

This tool can quickly calculate the required bending force based on the properties of different metal materials and bending parameters, helping engineers and technicians optimize metal processing techniques and improve production efficiency.

Bending Force Calculator

Enter material parameters and bending dimensions to calculate required force

mm
mm
mm

Typically 6-8 times the material thickness

Typical range: 0.2 - 0.5

Calculation Results

Please fill in all required parameters and click the calculate button

Parameter Summary
  • Material:-
  • Thickness:-
  • Length:-
  • V-Die Width:-

Common Metal Material Parameters

Reference values for mechanical properties of various metal materials

Material Name Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Bending Characteristics
Carbon Steel (Q235)
235 375-500 26 Easy to bend, suitable for most applications
Stainless Steel (304)
205 515 40 Requires higher force, significant springback
Aluminum Alloy (6061)
55 110 16 Easy to bend, minimal springback
Copper Alloy
70-310 200-450 10-45 Good ductility, suitable for complex bends
Brass
90-340 300-600 5-65 Good bending properties, controlled speed required

Note: Data in the table are typical values. Actual applications should be adjusted according to specific material grades and heat treatment conditions.

Bending Force Calculation Formula

Theoretical basis and parameter explanation for bending force calculation

Basic Calculation Formula

Bending Force (kN) = (K × S² × L × σ) / V

Parameter Explanation
  • K: Bending factor, typically 0.33
  • S: Material thickness (mm)
  • L: Bending length (mm)
  • σ: Material tensile strength (MPa)
  • V: V-die opening width (mm)
Usage Instructions
  • V-die width is usually 6-8 times the material thickness
  • Actual required force should consider 10-20% safety margin
  • For high-strength materials, it is recommended to increase K value appropriately
  • This formula applies to acute angle bending; obtuse angles require coefficient adjustment

Material Comparison Chart

About Bending Force Calculation

Basic knowledge and application tips for bending processes

Introduction to Bending Process

Metal bending is a common metalworking process that applies force to create plastic deformation in materials, forming desired angles and shapes. Accurately calculating bending force is crucial for selecting appropriate equipment, ensuring product quality, and improving production efficiency.

The magnitude of bending force depends primarily on the material's mechanical properties, thickness, bending length, and the parameters of the dies used. Excessive force can cause equipment overload or material damage, while insufficient force will not achieve the desired bending effect.

Application Tips

  • Choose appropriate V-die width, typically 6-8 times the material thickness
  • For high-strength materials, appropriately reduce the V-die width
  • Remove impurities and oil from the material surface before bending
  • Consider the springback characteristics of the material and adjust the bending angle appropriately
  • For long workpieces, ensure adequate support to prevent deformation
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