An X-ray fine-gauge steel wire residual stress detection and clamping device

Abstract

The invention relates to an X-ray fine-gauge steel wire residual stress detection and clamping device, which includes a base, a movable support and a crossbeam arranged above the movable support, a steel wire clamping assembly is arranged on the crossbeam, and the movable support can deflect and rotate relative to the base around a vertical axis. Translation along the lateral direction, the clamping assembly includes tensioning chucks arranged at both ends of the beam. The tensioning chucks are equipped with stress sensors for testing the tension force of the tensioning chucks on the steel wire. The tensioning chucks can wrap around the center of the steel wire Axis rotation. The steel wire clamping device, in cooperation with the X-ray residual stress tester, can effectively reduce the detection difference of residual stress values ​​at different arcs of the steel wire in the test spot area, and improve the detection accuracy of the residual stress of the steel wire micro-area.

Description

technical field [0001] The invention relates to the technical field of X-ray non-destructive testing of fine-gauge steel wires, in particular to a steel wire clamping device matched with an X-ray detector. Background technique [0002] During the drawing and reducing process of steel wire, due to the inconsistent deformation of the core and the surface, residual tensile stress will inevitably be generated inside the steel wire, and the surface and core of the steel wire have different residual stress values. Reducing the residual tensile stress of the steel wire can not only improve the tensile, torsion and bending properties of the steel wire, but also improve the fatigue resistance, relaxation resistance and corrosion resistance of the steel wire. In the process of high-strength and high-performance research and development of steel wire, the elimination of residual stress is one of the key points. [0003] At present, the measurement methods of steel wire residual stress...

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Problems solved by technology

[0003] At present, the measurement methods of steel wire residual stress can be divided into mechanical measurement and physical measurement. Among them, the nondestructive X-ray diffraction method is the most mature. However, the application of this method is also limited by the size of the spot, and because the steel wire has a certain ring diameter The residual stress along the circumferential and radial directions of the steel wire is often different, while the residual stress along the axial direction of the steel wire is basically the same

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