CN210269735U - Multi-sensitivity contrast test block for detecting internal defects of large bearing ring - Google Patents
Multi-sensitivity contrast test block for detecting internal defects of large bearing ring Download PDFInfo
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- CN210269735U CN210269735U CN201920995078.XU CN201920995078U CN210269735U CN 210269735 U CN210269735 U CN 210269735U CN 201920995078 U CN201920995078 U CN 201920995078U CN 210269735 U CN210269735 U CN 210269735U
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- 239000007822 coupling agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
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Abstract
The utility model provides a multi-sensitivity contrast test block for detecting large-scale bearing ring internal defect, relates to nondestructive test's ultrasonic testing field, the utility model discloses a set up two sets of flat bottom holes of two kinds of different diameters on parent metal (3) respectively, realize the detection purpose to the different detectivity requirements in the different positions of same work piece, the utility model has the characteristics of simple structure, convenient to use etc. can adapt to higher and higher detection requirement.
Description
Technical Field
The utility model relates to a nondestructive test's ultrasonic testing field, concretely relates to sensitivity of excelling in contrast test block for detecting large-scale bearing ring internal defect.
Background
As is known, bearings are indispensable bearing parts for modern machines, widely used in machine tools, vehicles (automobiles, trains, etc.), construction machines, agricultural machines, mining machines; mechanical products such as petroleum, metallurgy, building, chemical engineering, water conservancy, electric power and the like; and in the fields of instruments, household appliances, computers, aviation, aerospace, navigation, war industry and the like, the bearing quality is known as the joint of the machine, and the performance and the level of various matched hosts and equipment are directly influenced by the bearing quality. For example, the wind power bearing has the disadvantages of severe use environment, extremely difficult maintenance and disassembly and high maintenance cost; the bearing of the shield machine cannot be maintained in the tunneling process due to the badness and the particularity of the working condition of the shield machine, and the bearing is required not to have any fault or failure which affects the normal use of the bearing in unit working time (or tunneling length). The high reliability and long life requirements of these bearings make the requirements on the manufacturing process and quality level of the bearings extremely high, which means that the requirements on the ultrasonic detection sensitivity of the internal defects of the materials are higher and higher. In particular, the functional region, which is the region near the working surface of the bearing, has defects hidden therein, which are the sources of cracks under the alternating stress applied to the bearing during operation. Therefore, the requirement on the sensitivity is higher, the flat-bottom hole phi 0.5 or even higher is generally required to be achieved, and the non-functional area generally reaches the flat-bottom hole phi 2.
Therefore, it is a technical requirement of those skilled in the art to find a reasonable method for detecting internal defects of a large-sized bearing ring, that is, the bearing ring is divided into a functional region and a non-functional region, the region with a thickness of 10mm from the surface of the rolling track is the functional region, the other regions are the non-functional regions, and the detection sensitivity of the functional region is obviously higher than that of the non-functional region. In actual detection, the reference block is one of important components in an ultrasonic detection system, and how to provide the multi-sensitivity reference block for detecting the internal defects of the large-sized bearing ring is particularly important.
Disclosure of Invention
For overcoming exist not enough among the background art, the utility model provides a multisensitiveness contrast test block for detecting large-scale bearing ring internal defect, the utility model discloses a set up two sets of flat holes of two kinds of diameters on the parent metal respectively to whether the work piece is qualified according to the requirement of accepting, realized the purpose to the different sensitivity detection requirements in the different positions of same work piece.
In order to achieve the above purpose, the present invention adopts the following technical solutions:
the utility model provides a multi-sensitivity contrast test block for detecting large-scale bearing ring internal defect, includes hole A, hole B, parent metal and arcwall face, the parent metal is the arc structure, and the right side or the left side interval of arcwall face are equipped with five hole B on the parent metal, are equipped with the arcwall face at the lower cambered surface of parent metal, are equipped with five hole A in the left side or the right side interval of arcwall face bottom, the central line in hole A and hole B respectively with the arc central line direction unanimous formation of parent metal the multi-sensitivity contrast test block for detecting large-scale bearing ring internal defect.
The multi-sensitivity reference block for detecting the internal defects of the large bearing ring is characterized in that the holes A and the holes B are uniformly distributed on the base material in a fan shape along the same circumference of the base material.
The multi-sensitivity reference block for detecting the internal defects of the large bearing ring is characterized in that the depths of the five holes A are sequentially increased from left to right.
The multi-sensitivity contrast block for detecting the internal defects of the large bearing ring is characterized in that the depths of the five holes B are sequentially reduced from left to right.
The multi-sensitivity contrast test block is used for detecting the internal defects of the large bearing ring, and the hole A is a flat-bottom hole.
The multi-sensitivity contrast test block is used for detecting the internal defects of the large bearing ring, and the hole B is a flat-bottom hole.
The multi-sensitivity contrast test block for detecting the internal defects of the large bearing ring is characterized in that the diameter of the hole A is phi 2-phi 4.
The multi-sensitivity contrast test block for detecting the internal defects of the large bearing ring is characterized in that the diameter of the hole B is phi 0.1-phi 0.5.
Adopt technical scheme as above, the utility model discloses the superiority as follows has:
the utility model discloses a set up two sets of flat bottom holes of two kinds of different diameters respectively on the parent metal, realize the detection purpose to the different detectivity requirements in the different positions of same work piece, the utility model has the characteristics of simple structure, convenient to use etc, can adapt to higher and higher detection requirement.
Drawings
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a schematic top view of the present invention;
fig. 3 is a left side view structure diagram of the present invention;
in the figure: 1. a hole A; 2. a hole B; 3. a base material; 4. an arc-shaped surface.
Detailed Description
The present invention will be explained in more detail by the following examples, which are not intended to limit the scope of the invention;
it should be noted that the directions and positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. used in describing the structure of the present invention are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The multi-sensitivity contrast test block for detecting the internal defects of the large-sized bearing ring comprises a hole A1, a hole B2, a base material 3 and an arc-shaped surface 4, wherein the base material 3 is of an arc-shaped structure, the curvature of the arc-shaped base material 3 is the same as that of a detected workpiece, five holes B2 are arranged on the right side or the left side of the arc-shaped surface of the base material 3 at intervals, the depth of the five holes B2 is gradually reduced from left to right, the hole B2 is a flat-bottom hole, and the diameter of the hole B2 is phi 0.1-phi 0.5. The lower arc surface of the base material 3 is provided with an arc surface 4, five holes A1 are arranged on the left side or the right side of the bottom of the arc surface 4 at intervals, the depth of the five holes A1 is sequentially deepened from left to right, the holes A1 are flat-bottom holes, the diameter of the holes A1 is phi 2-phi 4, the holes A1 and the holes B2 are uniformly distributed on the base material 3 in a fan shape along the same circumference of the base material 3, the center lines of the holes A1 and the holes B2 are respectively consistent with the direction of the arc center line of the base material 3 to form the multi-sensitivity comparison test block for detecting the internal defects of the large-size bearing ring, and in specific implementation, the specific arrangement relationship between the holes A1 and the holes B2 is left-right.
The utility model discloses when concrete implementation, the production technology based on large-scale bearing ring is detected the basis of technique: upsetting, punching and rolling, wherein the defects in the forged piece are distributed by a plurality of delay lines, the plane type defects are mainly used, the direction of the plane type defects is vertical to the forging direction, so that the forged piece detection is suitable for detecting longitudinal waves of an outer diameter surface, the detection of a straight probe is mainly used, and the incident direction of sound waves is vertical to the forging flow line as far as possible. Therefore, the test block reflector adopts a flat-bottom hole, the size of the flat-bottom hole depends on the requirements of customers, and the influence of a detection blind area and a near field area is considered.
Taking the wind power bearing as an example, the special reference block of wind power bearing ring can set up to 2 when specifically using, is the reference block I for outer lane detection respectively, and the reference block II for inner circle detection. The material and the heat treatment state of the workpiece are the same as those of the detected workpiece, and the surface roughness Ra is less than or equal to 3.2. The shape and size of each test block and the design of artificial defects (including the depth, size, distance and the like) of each test block are mainly carried out according to the national standards of the test blocks, the sensitivity requirements of the detected workpiece, the processing technology of the detected workpiece, the relevant technical standards of phased array and ultrasonic detection and the like.
(1) Reference block I
The hole is of an arc section structure, a plurality of flat bottom holes are processed along the length center line of the arc section structure in the arc direction, and the center line of each hole is consistent with the center line of the arc in the direction. At one end, facing inward from the outer diameter, 5 flat bottom holes of different depths are uniformly machined, herein denoted as d 1; at the other end, facing inwardly from the inside diameter, 5 flat bottom holes of different depths are uniformly machined, herein denoted as d 2.
(2) Reference block II
The hole is of an arc section structure, a plurality of flat bottom holes are processed along the length center line of the arc section structure in the arc direction, and the center line of each hole is consistent with the center line of the arc in the direction. At one end, facing inwards from the inner diameter, 5 flat-bottom holes with different depths are uniformly machined, which is herein denoted as d 3; at the other end, facing inward from the outer diameter, 5 flat bottom holes of different depths are uniformly machined, herein denoted as d 4.
The utility model discloses a specifically use as follows:
taking bearing outer sleeve detection as an example, the detection of the functional area is to place an ultrasonic detection probe on the test block detection surface 1, scan parallel lines, sequentially find out the highest wave reflection position of each flat-bottom hole, make a TCG (or DAC) curve according to the instruction of the instrument and store the TCG (or DAC) curve. When a workpiece is actually detected, judging whether the height of the curve wave exceeds the height of the curve wave when a defective echo is found; the detection method of the non-functional area is the same. If the detection device does not have the function of curve making, the found defect echo can be compared with the echo of the flat-bottom hole on the reference block in an equivalent manner to determine the equivalent size of the defect.
The utility model discloses an innovation point is as follows:
1) the test block is a special comparison test block for detecting the manufacture of a workpiece, and can be set into 2 blocks in one set during specific use: namely, the test block for the outer sleeve and the test block for the inner sleeve;
2) the flat bottom holes on the test block are provided with two groups of holes with different diameters, so that the detection purpose of different detection requirements of different parts on the same workpiece is achieved.
The utility model discloses a concrete use embodiment as follows:
1. functional area detection
1.1 detection equipment: olympus Omniscan MX phased array ultrasonic flaw detector, 10L64 phased array probe (10 Mhz, profile wedge added), reference block i.
1.2 detection timing: after the surface of the forged piece is polished, the surface roughness Ra of the detected surface is less than or equal to 3.2 by detecting when the allowance of 4mm is reserved on the detected surface.
1.3 coupling agent: glycerol
1.4 detection step
1) Opening an ultrasonic phased array instrument, connecting an ultrasonic phased array probe, setting parameters of the probe and a wedge block, setting material sound velocity and wedge block compensation; on the detection surface 1, adjusting the detection depth of an instrument to be consistent with the depth of a test block; according to the instrument specification, 5 phi 0.5 flat-bottom hole data of a reference block are collected, a TCG curve is made, and the TCG curve is stored as a setting file YJ0.5001. ops.
2) Calling a corresponding setting file and displaying a TCG curve interface;
3) 100% of parallel line scanning is carried out on the inner diameter surface of the bearing outer sleeve, and the coverage rate of adjacent scanning is 10% -30% of the length direction of the probe.
4) And (3) defect evaluation: and the TCG curve is adopted, and the defect is unqualified when the amplitude of the defect exceeds 80 percent of the gate line.
5) When the same ferrule is detected later, the corresponding setting file YJ0.5001.ops is directly called, and the detection can be started.
2. Nonfunctional area detection
2.1 detection equipment: TS-2028C ultrasonic flaw detector, 2.5M or 5M longitudinal wave straight probe, reference block I.
2.2 detection timing: and (5) detecting the forged piece after the surface is polished, wherein the surface roughness Ra is less than or equal to 3.2.
2.3 coupling agent: and (3) glycerol.
2.4 detection step
1) Opening an ultrasonic flaw detector, connecting an ultrasonic probe, setting probe parameters and setting material sound velocity; adjusting the detection depth of the instrument to be consistent with the depth of the test block; according to the instrument specification, 5 phi 2 flat-bottom hole data of a reference block are collected, a DAC curve is made, and a setting file is stored in a channel 1.
2) Calling a corresponding setting file, and displaying a DAC curve interface;
3) and scanning the outer diameter surface of the bearing outer sleeve by a 100% grating method, wherein the moving coverage area of the adjacent probes is at least 10% -30% of the effective probe diameter.
4) And (3) defect evaluation: and adopting a DAC curve, and determining that the defect amplitude exceeds the curve to be unqualified.
5) When the same ferrule is detected later, the channel 1 is directly opened to call the corresponding curve interface, and then the detection can be started.
The part of the utility model not detailed is prior art.
The embodiments selected for the purpose of disclosing the invention are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and invention.
Claims (8)
1. The utility model provides a multi-sensitivity reference block for detecting large-scale bearing ring internal defect, includes hole A (1), hole B (2), base metal (3) and arcwall face (4), characterized by: the base material (3) is of an arc-shaped structure, five holes B (2) are formed in the right side or the left side of an arc-shaped surface of the base material (3) at intervals, the arc-shaped surface (4) is arranged on the lower arc surface of the base material (3), five holes A (1) are formed in the left side or the right side of the bottom of the arc-shaped surface (4) at intervals, and the central lines of the holes A (1) and the holes B (2) are respectively consistent with the direction of the arc-shaped central line of the base material (3) to form the multi-sensitivity comparison test block for detecting the internal defects of the large-.
2. The multi-sensitivity contrast block for detecting internal defects of a large bearing ring according to claim 1, wherein: the holes A (1) and the holes B (2) are uniformly distributed on the base material (3) in a fan shape along the same circumference of the base material (3).
3. The multi-sensitivity contrast block for detecting internal defects of a large bearing ring according to claim 1, wherein: the depth of the five holes A (1) becomes deeper from left to right in sequence.
4. The multi-sensitivity contrast block for detecting internal defects of a large bearing ring according to claim 1, wherein: the depth of the five holes B (2) becomes shallow from left to right in sequence.
5. The multi-sensitivity contrast block for detecting internal defects of a large bearing ring according to claim 1, wherein: the hole A (1) is a flat bottom hole.
6. The multi-sensitivity contrast block for detecting internal defects of a large bearing ring according to claim 1, wherein: the hole B (2) is a flat bottom hole.
7. The multi-sensitivity contrast block for detecting internal defects of a large bearing ring according to claim 1, wherein: the diameter of the hole A (1) is phi 2-phi 4.
8. The multi-sensitivity contrast block for detecting internal defects of a large bearing ring according to claim 1, wherein: the diameter of the hole B (2) is phi 0.1-phi 0.5.
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| CN201920995078.XU CN210269735U (en) | 2019-06-28 | 2019-06-28 | Multi-sensitivity contrast test block for detecting internal defects of large bearing ring |
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| CN201920995078.XU CN210269735U (en) | 2019-06-28 | 2019-06-28 | Multi-sensitivity contrast test block for detecting internal defects of large bearing ring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114487132A (en) * | 2022-01-28 | 2022-05-13 | 洛阳Lyc轴承有限公司 | Ultrasonic phased array detection reference block for high-speed rail bearing ring |
| RU225060U1 (en) * | 2023-10-31 | 2024-04-12 | Алексей Сергеевич Зубарев | Adjustment sample for setting up ultrasonic thickness gauges |
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2019
- 2019-06-28 CN CN201920995078.XU patent/CN210269735U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114487132A (en) * | 2022-01-28 | 2022-05-13 | 洛阳Lyc轴承有限公司 | Ultrasonic phased array detection reference block for high-speed rail bearing ring |
| RU225060U1 (en) * | 2023-10-31 | 2024-04-12 | Алексей Сергеевич Зубарев | Adjustment sample for setting up ultrasonic thickness gauges |
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Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China |