Ultrasonic probe for wheel hub

Abstract

The invention discloses an ultrasonic probe for a wheel hub. The ultrasonic probe comprises a probe shell and a piezoelectric wafer, wherein the piezoelectric wafer is arranged at the end part of theprobe shell; the ultrasonic probe further comprises an elastically deformable sound beam convergent lens; the sound beam convergent lens is detachably located on the outer side of the piezoelectric wafer and arranged at the end part of the probe shell. The ultrasonic probe for the wheel hub is a detachable portable focused ultrasonic probe; the sound beam convergent lens can be fitted to the curved surface of a tread to improve the ultrasonic flaw detection capacity of the tread; the sound beam convergent lens detachably detects flaws on inner and outer rim surfaces, so that various types of multiple probes are not required to be carried; furthermore, the ultrasonic probe is simple in structure and low in manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of rail wheels, in particular to an ultrasonic probe for wheel tires. Background technique [0002] Ultrasonic testing technology has been widely used in the detection of internal defects of rail transit wheel tires. As we all know, the quality of the internal quality of the wheel is directly related to the reliability of the product. With the rapid development of China's rail transit wheels towards high speed and heavy load, customers such as OEMs have higher and higher requirements for the reliability of wheel and tire products. , in order to ensure the safety of the wheels, in addition to improving the level of wheel steel smelting technology, the wheel manufacturing enterprises have full-scale ultrasonic testing of the wheels to become the factory guarantee of the wheels, and the selection and design of the ultrasonic probe is an essential requirement for flaw detection. [0003] At present, ultrasonic ...

AI Technical Summary

Problems solved by technology

[0004] The comprehensive utilization of the above various probes basically meets the full-scale flaw detection requirements of wheel rims, but it is inconvenient to carry probes of various specifications when testing wheels

However, there are still some deficiencies in the flaw detection of the tread: the wheel tread is a curved surface, and the ultrasonic sound field generated by the conventional straight probe is similar to a "horn" shape. Defect detection, coupled with the fact that the probe cannot fit the surface of the tread, causes a large difference in manual flaw detection, which affects the evaluation of defects

Although the dual-element probe can realize the focused incidence of ultrasonic waves, it also cannot fit the tread, and the focal length is short and fixed.

Although phased array probes can be fitted with curved surface wedges, the accessories of phased array probes are relatively expensive, there are many wheel specifications, and the curvature of the tread surface varies greatly. The configuration of multi-specification phased array wedges is obviously lacking in economy.

Images