Interest Name: Triform
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Stretch forming or wrap forming machines are used to form large metal sheets or extrusions around contoured dies to create the desired shapes. Stretching these materials to their elastic limit results in an increased material yield strength and a stronger finished part. Since stretch forming machines maintain constant tension of the metal throughout the process, they minimize imperfections and wrinkles.

Triform™ designs and builds machines for two main types of stretch forming: sheet (transverse) and extrusion (longitudinal).

Features of Triform’s Extrusion Stretch Forming Machines

  • Synced or independent arm actuation
  • Programmable pressure and position cycles facilitate both traditional and tangential stretch forming
  • ‘Closed-loop’ control system allows precise, repeatable tension and angle control during operation: Arm Angle Control (±0.5 degrees) / Tension Force Control (±2% of full scale)
  • Accurate, uniform tension force throughout the cycle minimizes wrinkling
  • Programmable post-load cycle minimizes material spring back and increases the yield strength of material
  • Built-in recipe functionality allows users to save proven cycle parameters for guaranteed repeatability and decreased set-up time
  • Manual control mode gives the operator direct control over the cycle profile during new part development
  • Supplemental accessories such as heat integration for high strength alloys and hydraulic joggle rams for setting bends in the formed extrusions can be incorporated as needed

Why are Triform Stretch Formers the Best in the Industry?

Beckwood’s Triform stretch forming machines are engineered for Infinite Life using Finite Element Analysis (FEA) software and feature high-quality, standard components from the best suppliers in the industry. Additionally, Triform is an official partner of ESI, the provider of PAM-STAMP Forming Simulation Software. Part quoting, new part development, tooling design, and sales efforts are all aided by PAM-STAMP simulations.

Learn more about Stretch Forming and other hydraulic press applications in our Hydraulic Press Handbook.

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