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A detection method for internal defects of large bearing rings
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A bearing ring and detection method technology, which is applied to measurement devices, instruments, analysis of solids using sonic/ultrasonic/infrasonic waves, etc., can solve the problems of difficult maintenance, disassembly, harsh use environment, and high maintenance costs, and reduce detection blind spots. , The detection effect is good, the detection range is large
Active Publication Date: 2022-04-08
LUOYANG LYC BEARING
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Problems solved by technology
For example, wind power bearings are used in harsh environments, and maintenance and disassembly are extremely difficult, resulting in high maintenance costs; however, shield machine bearings cannot be repaired during the excavation process due to the harsh and special working conditions of the shield machine, and the bearings are required to operate within a unit of working time. (or tunneling length) shall not have any failure or failure affecting the normal use of the bearing
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specific Embodiment 1
[0048] Specific embodiment one: detection of bearing outer ring:
[0051] 1.2 Testing timing: After the surface of the forging is polished, the testing surface is reserved for testing when a 4mm margin is reserved, and the roughness of the testing surface is Ra≤3.2.
[0054] 1) Turn on the ultrasonic phased array instrument, connect the ultrasonic phased array probe, set the probe and wedge parameters, set the material sound velocity and wedge compensation; on the detection surface 1, adjust the detection depth of the instrument to be consistent with the depth of the test block; according to the instrument instructions, Collect the data of 5 Φ0.5 flat-bottomed holes of the comparison test block, make the...
specific Embodiment 2
[0069] Specific embodiment two: detection bearing inner ring:
[0070] 1. Function area detection
[0071] 1.1 Testing equipment: Olympus Omniscan MX phased array ultrasonic flaw detector, 10L64 phased array probe (10Mhz, plus profiling wedge), comparison test block II.
[0072] 1.2 Testing timing: After the surface of the forging is polished, the testing surface is reserved for testing when a 4mm margin is reserved, and the roughness of the testing surface is Ra≤3.2.
[0075] 1) Turn on the ultrasonic phased array instrument, connect the ultrasonic phased array probe, set the probe and wedge parameters, set the material sound velocity and wedge compensation; on the detection surface 1, adjust the detection depth of the instrument to be consistent with the depth of the test block; according to the instrument instructions, Collect the data of 5 Φ0.5 flat-bottomed holes of the comparison test block, make the T...
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Abstract
A method for detecting internal defects of a large bearing ring, which relates to the field of ultrasonic detection of non-destructive testing. The invention organically combines the two detection methods of ultrasonic phased array and ultrasonic detection, which not only achieves the detection of different detection sensitivities for different parts of the same workpiece The purpose is to overcome the shortcomings of the two detection methods, that is, the ultrasonic phased array detection is used for the functional area, which greatly improves the detection sensitivity and ensures the high reliability of the bearing. The ultrasonic detection is used for the non-functional area, so that the detection range is large. , and adopt relatively low detection sensitivity, meet the quality requirements and improve the utilization rate of materials, etc. The present invention has the characteristics of high detection sensitivity, high material utilization rate, good detection effect, etc., and is suitable for wide-scale popularization and application.
Description
technical field [0001] The invention relates to the field of ultrasonic testing of non-destructive testing, in particular to a testing method for internal defects of large bearing rings. Background technique [0002] It is known that bearings are indispensable supporting components of modern machines, and are widely used in machine tools, vehicles (automobiles, trains, etc.), construction machinery, agricultural machinery, mining machinery; petroleum, metallurgy, construction, chemical industry, water conservancy, electric power and other mechanical products ; and instrumentation, household appliances, computers, aviation, aerospace, navigation, military and other fields, known as the "joint" of the machine, the quality of the bearing directly affects the performance and level of various supporting hosts and equipment. For example, wind power bearings are used in harsh environments, and maintenance and disassembly are extremely difficult, resulting in high maintenance costs;...
Claims
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Application Information
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