Device and method for non-destructive detection of subcutaneous defects in radial tire mold
A radial tire and tire mold technology, applied in the direction of using radiation for material analysis, material magnetic variables, etc., can solve the problems of high-precision positioning detection and identification of radial tire molds, to improve accuracy, improve detection efficiency, and improve comprehensiveness. Effect
Active Publication Date: 2016-10-05
SOUTH CHINA UNIV OF TECH
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[0006] The purpose of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, to provide a device and method for non-destructive detection of subcutaneous defects in radial tire molds; , Technical issues of detection and identification
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[0055] Such as Figure 1 to Figure 6 shown. The device for non-destructive detection of subcutaneous defects in radial tire molds of the present invention includes: a ray detection system for identifying and locating tire mold pore defects; used to assist the ray detection system to prevent missed inspections caused by steel sheets in the subcutaneous area of tire molds eddy current testing system;
[0056] The radiation detection system includes: an X-ray source 11, an area array detector 12 (high resolution amorphous silicon), a data acquisition and transmission system 13, a computer image processing system 14, a transmission mechanism 16 of the tire mold, and a transmission mechanism 16. control system 15;
[0057] The emitting place of the X-ray source 11 and the receiving place of the area array detector 12 are respectively equipped with front and rear collimators; the photodiode of the area array detector 12 is connected with the data acquisition and transmission sys...
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The invention discloses a device and method for non-destructive detection of subcutaneous defects of radial tire molds, including a ray detection system for identifying and locating tire mold pore defects; used to assist the ray detection system to prevent damage caused by steel sheets in the subcutaneous area of tire molds. The eddy current inspection system that causes missed detection due to occlusion; adopts the sub-pixel extraction algorithm based on gray scale integration, locates the tire mold air hole defect to the sub-pixel level, and analyzes the characteristics of the defect as a whole through the collaborative defect identification method based on synergy theory. Aiming at various defects existing inside the radial tire mold, the efficient identification of specific defects is realized. The high-precision and high-efficiency detection of a large number of subcutaneous defects of quantum radial tire molds has been realized, and the effective classification of molds has been carried out, which has filled the gap in the field of subcutaneous defect detection of radial tire molds and effectively ensured the product quality of radial tire molds.
Description
technical field [0001] The invention relates to the technical field of nondestructive testing, in particular to a device and method for nondestructive testing of subcutaneous defects of radial tire molds. Background technique [0002] With the development of radial tire products in my country in the direction of high precision and safety, higher requirements are put forward for the quality and technical level of radial tire molds. However, tire molds are prone to defects such as air holes during the precision casting process. The existence of subcutaneous defects seriously affects the fatigue strength and toughness of radial tire molds, and at the same time reduces their service life. Therefore, the tire mold industry urgently needs to develop, promote and apply professional testing equipment with higher efficiency and higher precision, and continuously improve and perfect the detection method of subcutaneous defects in radial tire molds. [0003] At present, most of the de...
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IPC IPC(8): G01N23/04G01N27/90
Inventor 洪晓斌倪蕾周建熹
Owner SOUTH CHINA UNIV OF TECH