Automatic crack detection system and method for medium-thick plate

Abstract

The invention relates to an automatic crack detection system and a method for medium-thick plates. The automatic crack detection system comprises an automatic crack detection control device, a steel plate movement control device, a first inner detection unit, a second inner detection unit and an inner detection unit movement control device. The automatic crack detection control device orders the steel plate movement control device to move a steel plate and orders the inner detection unit movement control device to control the first inner detection unit and the second inner detection unit to conduct inner detection to the steel plate. The automatic crack detection system additionally comprises a non-reference side detection unit, a reference side detection unit, a non-reference side detection unit movement control device and a reference side detection unit movement control device. The automatic crack detection control device orders the non-reference side detection unit movement control device and the reference side detection unit movement control device to control the non-reference side detection unit and the reference side detection unit to conduct head crack detection, side part crack detection and tail part crack detection to the steel plate. Thereby, the invention has the advantages that the crack detection efficiency and the practicability are improved.

Description

technical field [0001] The invention relates to the field of non-destructive testing, in particular to a novel automatic flaw detection system and method for medium and thick plates. Background technique [0002] The development history of the world's steel industry shows that the production level of medium and thick steel plates is an important symbol of the level of a country's steel industry. For ordinary medium-thick steel plates, the quality of the steel plates can be guaranteed to meet the application requirements by strictly controlling the metallurgical process, and steel mills usually conduct random inspections on product quality; while for shipbuilding plates, offshore platform plates, pipeline plates, boiler plates, pressure vessel plates, Special medium-thick steel plates such as bridge plates, automobile girder plates, weather-resistant plates, high-strength structural plates, and construction machinery plates, while ensuring production quality, comprehensive fl...

AI Technical Summary

Problems solved by technology

The obvious disadvantage of this solution is that the detection efficiency is low (usually it takes at least 4 minutes to detect a steel plate), especially when the detection system is installed on the production line, it will become the productivity bottleneck of the production line

In addition, the internal inspection of this inspection process uses two sets of cross-compensation methods to achieve 100% flaw detection. Due to the different specifications of the steel plates, it is impossible to guarantee the same detection blind area on the non-reference side of the steel plate with different specifications (maximum increase to 1 internal inspection unit) width, such as 100mm), which increases the detection range requirements of the non-reference side detector (right side detector), thus expanding the mechanical structure of the non-reference side detection trolley, which in turn affects the adaptability of the equipment to the board shape, and affects the reliability of the equipment. Practicality

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