Eddy-current ultrasonic nondestructive testing device for automobile fuel seamless steel tubes

Abstract

The invention discloses an automobile fuel seamless steel tube eddy current ultrasonic nondestructive testing device. The device comprises a feeding rack, a front roller path, an eddy current flaw detection device, an ultrasonic flaw detection device, a rear roller path, a discharging sorting device and a control system which are sequentially installed on a rack, wherein the ultrasonic flaw detection device comprises an ultrasonic rotating probe and an external circulating water tank, the ultrasonic rotating probe is a point focusing probe to improve the detection noise ratio, and the ultrasonic rotating probe is driven by an ultrasonic rotating probe host to rotate. The device is advantaged in that vortex detection and ultrasonic detection are carried out in sequence, detection precisionand detection efficiency are improved, the product quality is ensured, meanwhile, through the improved feeding and sorting structure, efficient feeding and orderly feeding are achieved, the improved sorting structure prevents steel pipes from being damaged after detection, and detection efficiency is improved; and meanwhile, efficient classified collection and marking operations are performed, sodetection accuracy of the whole detection device is improved.

Description

technical field [0001] The invention belongs to the technical field of nondestructive testing of seamless steel pipes, and in particular relates to an eddy current ultrasonic nondestructive testing device for seamless steel pipes of automobile fuel. Background technique [0002] Automobile fuel seamless stainless steel pipes are relatively important parts in automobiles, and their quality directly affects the actual performance of automobiles. Most of the existing steel pipe inspections use a single eddy current flaw detection technology or ultrasonic flaw detection technology. Therefore, although its equipment structure is simple, its detection effect is not good. At the same time, in the existing non-destructive testing device, its sorting station distinguishes good products from defective products, and then passes the steel pipe from the conveying track through the dial during the sorting process. When the steel pipe is dropped, it is easy to touch the inner wall of the c...

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Problems solved by technology

Therefore, although its equipment structure is simple, its detection effect is not good. At the same time, in the existing non-destructive testing device, its sorting station distinguishes good products from defective products, and then passes the steel pipe from the conveying track through the dial during the sorting process. When the steel pipe is dropped, it is easy to touch the inner wall of the collection tank, which will cause secondary damage to the steel pipe, or the steel pipe will fall directly without any buffer during the falling process, resulting in different steel pipes. Collision between, resulting in re-bruising, affecting product quality

In addition, the feeding method of the existing non-destructive testing device is usually relatively traditional, and the operator manually loads the material. This operation method is labor-intensive and requires the operator to be replaced midway. Therefore, the labor cost is increased and the work efficiency is low. The problem of this kind of feeding method is that there is a mechanical feeding method on the market. Although the mechanical method reduces the labor intensity of the operator and improves work efficiency, the structure of the existing device for feeding steel pipes is relatively Complexity and high installation cost greatly limit its popularization and application

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