Welded Component Torque Testing Machine

Servo torsion test bench for welded joints, used for torsional strength, stiffness and torsional fatigue assessment of welded assemblies

Product Overview

This welded component torque testing machine adopts high-precision servo torsion drive system, specially developed for welded joints, welded shafts, welded brackets and welded structural assemblies widely used in automobiles, engineering machinery and steel structures. It performs static torsion destructive test, torsional stiffness test and cyclic torsional fatigue test. The equipment measures maximum breaking torque, yield torque, torsion angle, shear strain and torque-angle curve, and evaluates crack initiation, fracture location and torsional failure mode of welding seams. Customized special fixtures can hold irregular welded specimens stably and reduce extra bending load during loading. The supporting control software collects torque and angle data in real time, stores test curves and exports standardized test reports. It is applied for welding procedure qualification, weld quality inspection and structural reliability verification.

Applicable International Standards

The system is designed to comply with the following recognized testing standards:

• ISO 18338:2021 — Metallic materials — Torsion test at room temperature

• ISO 1352:2021 — Metallic materials — Torque-controlled fatigue testing

• ISO 17653:2012 — Resistance welding — Destructive tests on welds in metallic materials — Torsion test of resistance spot welds

• ISO/TR 14345:2012 — Fatigue — Fatigue testing of welded components — Guidance

Note: Specific compliance depends on model configuration, torque sensor selection and customized fixture design. Customized fixtures and test schemes for extra testing standards are available upon request.

Key Features

• High precision servo torsion drive — Smooth and stable rotation loading, good repeatability of torque and angle data for welded seam evaluation.

• Optional torque range — 0.1 ~ 2000 N·m, multiple sensor options, and can be configured according to customer test requirements, replaceable sensors for different welded assemblies.

• Multi-test mode integration — Static breaking torsion, torsional stiffness, cyclic torsional fatigue and constant angle holding test.

• Custom welded specimen fixtures — Adapt to irregular welded brackets, welded shafts and asymmetric welded structural parts.

• Rich calculated indicators — Maximum torque, yield torque, torsional stiffness, ultimate torsion angle and shear modulus.

• Real-time curve display — Torque-angle curve, torque-time curve displayed synchronously during testing.

• Professional test software — Curve overlay comparison, batch data storage and formatted test report export.

• Complete safety protection — Over-torque, over-angle, overload and emergency stop protection functions.

Technical Specifications

Specifications vary by model configuration, torque sensor selection and customized fixture. Large torque version and special clamping jigs can be customized for heavy welded structural component testing.

Typical Applications

• Automotive component industry — Torsion performance test for automotive welded suspension brackets and welded shaft assemblies.

• Engineering machinery sector — Weld seam torsion strength verification for construction machinery structural parts.

• Steel structure manufacturing — Welding procedure qualification and quality inspection of welded joints.

• Welding R&D laboratory — Study on torsional crack propagation and fatigue life of different welding processes.

• Third-party testing institutions — Standard torsion test and certification service for welded components.