CN106018546B - Test piece auxiliary device for magnetic powder detection sensitivity verification - Google Patents
Test piece auxiliary device for magnetic powder detection sensitivity verification Download PDFInfo
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- CN106018546B CN106018546B CN201610547480.2A CN201610547480A CN106018546B CN 106018546 B CN106018546 B CN 106018546B CN 201610547480 A CN201610547480 A CN 201610547480A CN 106018546 B CN106018546 B CN 106018546B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
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Abstract
The invention discloses a test piece auxiliary device for magnetic powder detection sensitivity verification, which comprises a clamping seat support and a fixed support, wherein the clamping seat support is positioned below the fixed support, the lower end of the clamping seat support is provided with a clamping seat, and the clamping seat support is provided with a buffer structure; the clamping seat support and the fixing support are connected through the support rod structure, and the clamping seat support is provided with the clamping seat and the buffer structure, so that the problems that the surface condition of a detected workpiece is easily affected and the like are solved; the support rod connecting structure is a hollow rod structure, so that the weight is reduced, the carrying is convenient, and the support rod connecting structure enables enough observation vision; the vertical support rod of the fixing support can be inserted into the vertical support rod of the clamping seat support and fixed through the clamping buckle structure, so that the height of the device can be adjusted according to actual requirements, the device is convenient to carry and can be reused; the upper end of the fixed support is provided with an anti-abrasion pad, so that the collision and friction between the magnetic powder detection instrument and the fixed support can be reduced, and the service lives of the magnetic powder detection instrument and the device can be prolonged.
Description
Technical Field
The invention relates to the field of detection sensitivity verification, in particular to a test piece auxiliary device for magnetic powder detection sensitivity verification.
Background
The sensitivity test piece for magnetic powder detection is used for detecting the comprehensive performance of magnetic powder detection equipment, magnetic powder and magnetic suspension. Before the magnetic powder detection method is adopted to detect the workpiece, the sensitivity of the detection system is required to be checked by using a sensitivity test piece, and the workpiece can be detected after the check is qualified.
At present, a DT4A ultra-high purity low carbon pure iron material A1-15/50 type sensitivity test piece is generally adopted for magnetic powder detection to verify a magnetic powder detection system. The sensitivity test strip is typically made of a thin iron sheet with straight and circular slots engraved on one side to a certain depth, as shown in fig. 1. A1-15/50 type sensitivity test piece is a square with a side length of 20mm and a thickness of 50um, a circular notch with a diameter of 10mm is arranged by taking the center of the square as the center of the circle, the center of the circle is taken as the intersection point, a cross notch with a side length of 6mm is arranged in the circular notch, and the depths of the circular notch and the cross notch are 15um. The method for checking the sensitivity of the detection system by using the sensitivity test piece is to tightly attach one surface of the test piece with the notch to the surface of the detected workpiece, and then magnetize the workpiece and apply magnetic powder. If the magnetization method and specification are properly selected, the magnetic mark corresponding to the notch can be seen on the other surface of the test piece.
However, in the actual detection process, the surface of the detected workpiece cannot reach the standard condition, even the conditions of rough surface, irregular shape, dust accumulation, slag accumulation and the like exist, if the sensitivity test piece disclosed in the prior art is stuck to the surface of the workpiece, the test piece cannot be tightly stuck to the surface of the workpiece, and the effect of sensitivity verification is affected; on the other hand, in the conventional method, a test piece is stuck to the surface of a workpiece to be inspected by using tape paper, and the tape paper is torn off from the test piece after the calibration is completed, and in this process, the thin test piece is extremely easy to break, crease, and the like. Therefore, the existing sensitivity test piece is complex in operation in the use process, is greatly influenced by the surface condition of the detected workpiece, and the used adhesive tape paper cannot be reused and is time-consuming and labor-consuming, so that great trouble is brought to the staff for field detection. The present invention has been made in this context.
Disclosure of Invention
Aiming at the problems, the invention provides the test piece auxiliary device for checking the magnetic powder detection sensitivity, which is less influenced by the surface condition of the detected workpiece, is convenient to carry and can be repeatedly used.
The invention adopts the technical proposal for solving the technical problems that:
the utility model provides a test block auxiliary device for magnetic powder detection sensitivity check-up, includes cassette support and fixed bolster, the cassette support is located the fixed bolster below, the lower extreme of cassette support is provided with the cassette that can make the test block fixed and can make test block and test block subsides tightly, be provided with the buffer structure that can freely stretch out and draw back along vertical direction on the cassette support.
As a further improvement of the scheme, the clamping seat support and the fixing support are of a supporting rod connecting structure.
As a further improvement of the scheme, the support rod connecting structures of the clamping seat support and the fixing support comprise vertical support rods and horizontal support rods connected between the adjacent vertical support rods, and the vertical support rods and the horizontal support rods are hollow rods.
As a further improvement of the above scheme, the fixing support is mounted above the cassette support through an adjustable positioning structure.
As a further improvement of the scheme, the clamping seat is arranged at the lower end of the vertical supporting rod of the clamping seat bracket and can rotate around the vertical supporting rod where the clamping seat is arranged for facilitating the placement and fixing of the test piece.
As a further improvement of the scheme, the buffer structure is an elastic telescopic structure with elastic elements arranged inside, and two ends of the buffer structure are connected with the vertical struts of the clamping seat support.
As a further improvement of the scheme, the adjustable positioning structure adopts a buckle structure, the buckle structure is arranged at the upper end of the clamping seat support and comprises a fixed bayonet and a movable lock catch, the outer diameter of the vertical support rod of the fixed support is smaller than the inner diameter of the vertical support rod of the clamping seat support, and the vertical support rod of the fixed support can be inserted into the vertical support rod of the clamping seat support and fixed through the buckle structure.
As a further improvement of the scheme, the upper end of the fixed support is provided with an anti-abrasion pad for reducing the collision and friction of the magnetic powder detection instrument to the fixed support.
As a further improvement of the above, the hollow rod is a high strength low density material.
The beneficial effects of the invention are as follows: the invention discloses a test piece auxiliary device for magnetic powder detection sensitivity verification, wherein a clamping seat support and a fixed support are connected by adopting a support rod structure, the lower end of the clamping seat support is provided with a clamping seat for fixing a test piece and enabling the test piece to be tightly attached to the test piece, and the middle part of a vertical support rod of the clamping seat support is provided with a buffer structure, so that the problems that the test piece is easily influenced by the surface condition of a detected workpiece and the like are effectively solved, and the sensitivity verification failure caused by the surface condition of the test piece is avoided;
in addition, the clamping seat support and the fixing support are arranged to be of a support rod connecting structure, the support rod connecting structure is of a hollow rod structure, the weight of the device is reduced, the device is convenient to carry and use, and the support rod connecting structure enables enough observation fields to be available in the magnetic powder detection sensitivity verification process, and the effect of sensitivity verification can be judged conveniently and rapidly; the fixing support is arranged above the clamping seat support through an adjustable positioning structure, the adjustable positioning structure adopts a buckle structure, a vertical supporting rod of the fixing support can be inserted into the vertical supporting rod of the clamping seat support and is fixed through the buckle structure, the height of the device can be adjusted according to actual requirements, the device is convenient to carry, and the device can be reused;
further, the upper end of the fixed support is provided with the anti-abrasion pad, so that collision and friction between the magnetic powder detecting instrument and the fixed support can be reduced when the heavy magnetic powder detecting instrument is operated, and the service lives of the magnetic powder detecting instrument and the device are prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the invention, but not all embodiments, and that a person skilled in the art can obtain other designs and drawings from these drawings without inventive effort:
FIG. 1 is a schematic diagram of a preferred embodiment of the present invention.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a test piece auxiliary device for magnetic powder detection sensitivity calibration comprises a clamping seat support 1 and a fixing support 2, wherein the clamping seat support 1 and the fixing support 2 are of a supporting rod connection structure, and the fixing support 2 is located above the clamping seat support 1. Preferably, the cartridge holder 1 is provided with four vertical struts with equal length, and four horizontal struts with equal length are respectively arranged at the upper end and the lower end of the cartridge holder 1, and the struts are mutually connected to ensure the structural stability of the cartridge holder 1. The upper end of each vertical supporting rod of the clamping seat bracket 1 is provided with an adjustable positioning structure, preferably, the adjustable positioning structure is a clamping structure 3, the clamping structure 3 comprises a fixed bayonet and a movable lock catch, and the adjustable positioning structure can be arranged into other structures such as a bolt type structure besides the clamping structure 3; the middle part of each vertical supporting rod of the clamping seat bracket 1 is provided with a buffer structure 5 which can freely stretch to adapt to different surfaces, the buffer structure 5 is provided with an elastic telescopic structure, an elastic element such as a spring is arranged in the buffer structure 5, the stretching distance of the buffer structure 5 is one to three millimeters, and the stretching distance can be freely adjusted according to the surface structure of a test piece; the lower end of the vertical support rod of the clamping seat support 1 is provided with a clamping seat 4 which can fix the test piece and enable the test piece to be clung to the test piece, and the clamping seat 4 can rotate around the vertical support rod where the clamping seat is positioned to be used for conveniently placing and fixing the test piece. The fixed support 2 is provided with four equal-length vertical struts and four equal-length horizontal struts at the upper end of the fixed support, and the middle part of each horizontal strut is provided with an anti-abrasion pad 6 for reducing the collision and friction of the magnetic powder detection instrument to the fixed support 2.
The clamping seat bracket 1 is connected with the fixed bracket 2 through a clamping structure 3,
the support rod connecting structure is a hollow rod structure, the inner diameter of the vertical support rod of the clamping seat support 1 is one to two millimeters larger than the outer diameter of the vertical support rod of the fixing support 2, so that clearance fit is formed, the four vertical support rods of the clamping seat support 1 and the fixing support 2 are arranged in a one-to-one correspondence manner to be a telescopic structure fixed through the fastening structure 3, namely, the vertical support rod of the fixing support 2 can be inserted into the vertical support rod of the clamping seat support 1, and the proper height can be fixedly adjusted through the fastening structure 3.
When the magnetic powder detection device is used, the lock catch of each buckle structure 3 is unscrewed firstly, then the height of the fixed support 2 is adjusted, the overall height of the device is one to two millimeters higher than the height of the probe of the magnetic powder detection instrument matched with the device, and then the lock catch is screwed down to fix the fixed support 2. The test piece is placed on the clamping seat 4, and the angle of the clamping seat 4 is rotated to fix the test piece on the clamping seat 4. The device is placed under the magnetic powder detection instrument, and the magnetic powder detection instrument is slightly forced to enable the test piece to be clung to the surface of the test piece, so that the sensitivity verification of magnetic powder detection can be performed.
The foregoing embodiments are further illustrative of the present invention, but it should not be construed that the scope of the subject matter of the present invention is limited to the foregoing embodiments, and all techniques implemented based on the foregoing are within the scope of the present invention.
Claims (3)
1. A test piece auxiliary device for magnetic powder detection sensitivity check-up, its characterized in that: the test strip fixing device comprises a clamping seat support (1) and a fixing support (2), wherein the clamping seat support (1) is positioned below the fixing support (2), a clamping seat (4) which can fix a test strip and enable the test strip to be tightly attached to the test strip is arranged at the lower end of the clamping seat support (1), and a buffer structure (5) which can freely stretch along the vertical direction is arranged on the clamping seat support (1);
the fixed support (2) is arranged above the clamping seat support (1) through an adjustable positioning structure;
the adjustable positioning structure adopts a buckle structure (3), the buckle structure (3) is arranged at the upper end of the clamping seat support (1) and comprises a fixed bayonet and a movable lock catch, the outer diameter of a vertical support rod of the fixed support (2) is smaller than the inner diameter of a vertical support rod of the clamping seat support (1), and the vertical support rod of the fixed support (2) can be inserted into the vertical support rod of the clamping seat support (1) and fixed through the buckle structure (3);
firstly unscrewing the lock catch of each buckle structure (3), then adjusting the height of the fixed support (2) to ensure that the overall height of the device is one to two millimeters higher than the height of the probe of the magnetic powder detection instrument matched with the device, and then screwing the lock catch to fix the fixed support (2); placing a test piece on the clamping seat (4), and rotating the clamping seat (4) to an angle to fix the test piece on the clamping seat (4); the device is placed under a magnetic powder detection instrument, and the magnetic powder detection instrument is slightly forced to enable a test piece to be clung to the surface of a test piece, so that the sensitivity verification of magnetic powder detection can be performed;
the clamping seat support (1) and the fixing support (2) are of a supporting rod connecting structure; the support rod connecting structures of the clamping seat support (1) and the fixing support (2) comprise vertical support rods and horizontal support rods connected between the adjacent vertical support rods, and the vertical support rods and the horizontal support rods are hollow rods;
the clamping seat (4) is arranged at the lower end of the vertical supporting rod of the clamping seat bracket (1) and can rotate around the vertical supporting rod where the clamping seat is positioned to facilitate the placement and the fixation of a test piece;
the buffer structure (5) can freely stretch to adapt to different surfaces, the stretching distance of the buffer structure (5) is one to three millimeters, and the stretching distance can be freely adjusted according to the surface structure of a test piece; the buffer structure (5) is an elastic telescopic structure with elastic elements arranged inside, and two ends of the buffer structure (5) are connected with the vertical support rods of the clamping seat support (1).
2. The test piece assisting device for magnetic particle detection sensitivity verification according to claim 1, wherein: the upper end of the fixed support (2) is provided with an anti-abrasion pad (6) for reducing the collision and friction of the magnetic powder detection instrument to the fixed support (2).
3. The test piece assisting device for magnetic particle detection sensitivity verification according to claim 1, wherein: the hollow rod is a high strength low density material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547480.2A CN106018546B (en) | 2016-07-11 | 2016-07-11 | Test piece auxiliary device for magnetic powder detection sensitivity verification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610547480.2A CN106018546B (en) | 2016-07-11 | 2016-07-11 | Test piece auxiliary device for magnetic powder detection sensitivity verification |
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| Publication Number | Publication Date |
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| CN106018546A CN106018546A (en) | 2016-10-12 |
| CN106018546B true CN106018546B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610547480.2A Active CN106018546B (en) | 2016-07-11 | 2016-07-11 | Test piece auxiliary device for magnetic powder detection sensitivity verification |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088897A (en) * | 2017-12-01 | 2018-05-29 | 中车长江车辆有限公司 | For detecting the detection method of the production method of magnetic particle testing system overall sensitivity verification sample and sensitivity |
| CN113552210B (en) * | 2021-08-26 | 2023-05-30 | 宝武杰富意特殊钢有限公司 | Sensitivity test piece placement device for magnetic powder detection and verification and application method thereof |
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