NDW-XC 4mm/5mm/6mm/10mm/12mm/14mm Metal Wire Torsion Testing Machine

 1. Introduction

→Wire-simple torsion test (wire rotates for 360° around self-axes in one direction until it rotate for specified times or wire breaks)
→Wire-reverse torsion test (wire rotates for 360° around self-axes in one direction until it rotate for specified times and then rotate in reverse direction for same times or wire breaks)
→Used in simple or reverse torsion test for metal wires, bimetal wire, composites, bare wire, etc.
→Used to determine the plastic deformation capacity during simple torsion and reverse torsion and check the surface and internal defects of wires.
→Used to check the form of fracture and defects (flat, ladder type, oblique, fan shaped, with crack, with shrinkage hole, etc.)
→Used in simple torsion for metal wire, copper wire, aluminum wire and its alloy, composite materials, with wire diameter 1.0-14.0mm.
→Used in reverse torsion for metal wire, copper wire, aluminum wire and its alloy, irregular section conductor (contact wire). with wire diameter 1.0-10.0mm.

    Test Standards
     →ISO7800：2012(E) Metallic materials-Wire-Simple torsion test MOD；
     →ISO9649 Metallic materials-Wire-Reverse torsion test MOD；
     →ISO4101 Drawn steel wire for elevator ropes-Specifications MOD；
    →ISO7802:2013(E) Metallic materials-Wire-Wrapping test；
    →GB/T239.1-2012 Metallic materials-Wire-Part1：Simple torsion test；
    →GB/T239.2-2012 Metallic materials-Wire-Part2：Reverse torsion test；
    →GB/T4909.4 Test methods for bare wires-Part4：Torsion test；
    →GB/T4909.7 Test methods for bare wires-Part7：Mandrel winding test
    →GB/T2976 Metallic materials-Wire-Wrapping test
    →GB/T3952-2016 Copper drawing stock for electrical purpose
    →GB/T3428-2012Zinc-coated steel wire for stranded conductors/IEC60888：2006；MOD
    →GB/T20509 Copper and copper alloys drawing stock for the contacting materials of electric locomotives
    →YB/T5198-2015 Steel wires for elevator ropes (wire diameter: 0.15～3.50mm)
    →YB/T5197 Steel wire ropes for aeronautical use (wire diameter: 0.25～0.65mm)
    →YB/T5198-2015 Steel wires for elevator ropes (wire diameter 0.15～3.50mm)
    →TB/T2809 Copper and Copper-Alloy Contact Wires for Electric Railway
    →TB/T3111 Stranded Copper and Copper-Alloy Conductors for Electric Railway