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Method for detecting internal defects of large bearing ring
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A technology for bearing rings and detection methods, applied in measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc., can solve maintenance, disassembly difficulties, harsh use environments, and maintenance costs Advanced problems, to achieve the effect of improved quality requirements, good detection effect, and large detection range
Active Publication Date: 2019-08-09
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
The invention relates to a method for detecting internal defects of a large bearing ring, and relates to the field of ultrasonic detection of non-destructive detection. Two detection methods includingultrasonic phased array detection and ultrasonic detection are organically combined in the invention; therefore, the purpose of detecting different detection sensitivities of different parts of the same work-piece is achieved; furthermore, disadvantages of the two detection methods are overcome; namely, ultrasonic phased array detection on a functional area is carried out; therefore, the detection sensitivity is greatly increased; the high reliability of a bearing is ensured; ultrasonic detection on a non-functional area is carried out; therefore, the detection range is large; the relativelylow detection sensitivity is adopted; the material utilization rate and the like are increased while quality requirements are satisfied; and the method in the invention has the characteristics of being high in detection sensitivity and material utilization rate, good in detection effect and the like, and is suitable for large-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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