Welding part stress change testing device

Abstract

The invention discloses a welding part stress change testing device which includes a supporting disc, a clamping arc plate, a stress detecting plate, a thrust cone, a threaded rod, a sliding clamp supporting frame, a sliding base, an equipment base, a waste tray and a swinging clamp supporting frame. The supporting disc is taken as a supporting point, the clamping arc plate is taken as a lever, the tension of the clamping arc plate is adjusted through the horizontal movement of the trust cone and a welding part is clamped, and the adjustment is convenient; strain gauges can be bonded at different positions in the stress detecting plate, the strain gauges can be used multiple times according to different measurement requirements, the measurement steps are simplified, according to the lengthof the welding part, the position of the sliding base on a sliding groove can be appropriately adjusted to be suitable for welding parts of different lengths, the tilt angle of the swing clamp supporting frame is adjusted, then the butt joint angle of two welding parts is adjusted to be suitable for the welding of different welding lines, the waste tray is convenient to install and remove, wastedripped during welding is collected, and the cleanliness of the equipment is ensured.

Description

technical field [0001] The invention relates to the technical field of material welding, in particular to a stress change testing device for welded parts. Background technique [0002] During the welding process, thermal expansion and contraction of the weld metal lead to stress deformation of the workpiece after welding. The existing method for measuring the deformation of welded parts is to stick strain gauges on the welded parts. During the measurement, the sticking of the strain gauges takes time, and after the welding is completed, it needs to be pasted again, which is laborious, increases the difficulty of measurement, and complicates the operation of the experiment. [0003] Since welding is a physical process in which the welding material and the base metal are fused under the action of heat, there are different stress changes at the weld, and the positions of the bonded strain gauges will be different when measuring different stress changes. During the testing proc...

AI Technical Summary

Problems solved by technology

The existing method of measuring the deformation of welded parts is to stick strain gauges on the welded parts. During the measurement, it takes time to stick the strain gauges, and it needs to be pasted again after the welding is completed, which is laborious, increases the difficulty of measurement, and complicates the operation of the experiment.

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