CN215727244U - Portable Leeb hardness tester calibration test block suitable for multi-material check - Google Patents
Portable Leeb hardness tester calibration test block suitable for multi-material check Download PDFInfo
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- CN215727244U CN215727244U CN202121277511.XU CN202121277511U CN215727244U CN 215727244 U CN215727244 U CN 215727244U CN 202121277511 U CN202121277511 U CN 202121277511U CN 215727244 U CN215727244 U CN 215727244U
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Abstract
The utility model relates to a portable Leeb hardness tester calibration test block, in particular to a portable Leeb hardness tester calibration test block suitable for multi-material check. The test block comprises a test block body, a grain carving area, a bottom support and an upper cover, wherein the appearance of the test block body is cylindrical, the grain carving area is arranged on the side wall of the test block body, the lower end of the test block body is tightly hooped by the bottom support, and the upper cover is arranged at the upper end of the test block body. The test block comprises a first sector test block, a second sector test block, a third sector test block, a fourth sector test block, a fifth sector test block and a sixth sector test block which are all arranged in a sector structure, wherein the first sector test block, the second sector test block, the third sector test block, the fourth sector test block, the fifth sector test block and the sixth sector test block are mutually embedded. The side walls of the first sector test block, the second sector test block, the third sector test block, the fourth sector test block, the fifth sector test block and the sixth sector test block are all provided with grain carving areas.
Description
Technical Field
The utility model relates to a portable Leeb hardness tester calibration test block, in particular to a portable Leeb hardness tester calibration test block suitable for multi-material check.
Background
The hardness of the metal material is detected by using the portable Leeb hardness tester, so that the hardness value of the material can be quickly measured, and meanwhile, the material cannot be damaged, and the portable Leeb hardness tester is widely applied to the fields of the power industry and other engineering. On the one hand, the detection result of the portable Leeb hardness tester is sensitive to material selection, and the instrument is set before each impact, wherein the material channel selection is an important setting option, and the impact data deviation is large due to different channels.
On the other hand, due to the working principle and the characteristics of the Richter scale hardness tester, the instrument is easily interfered by various external factors in the detection process to generate data fluctuation and even errors. In order to reduce measurement deviation and improve the accuracy of equipment, the instrument needs to be checked by a standard test block in the detection process, and according to GB/T17394.2-2012 part 2 of the Metal Material hardness testing: the standard test block types are divided into three types according to the stipulation of the test and calibration of the hardness tester, the hardness ranges are respectively 530 +/-40, 630 +/-40 and 790 +/-40 HL, but the material types and the grades of the test blocks are not determined by the standard, and the standard only considers the selection of the hardness range and ignores the influence of the material.
With the rapid development of the thermal power generation industry and the application of large-capacity and high-parameter units, the grade of metal materials for power plants is continuously improved, and the grades are continuously enriched. At present, the grades of metal materials covered by the power industry range from carbon steel, low alloy steel to medium alloy steel, high alloy steel and even nickel-based alloy, the hardness range is about 120-330 HB, and the problems of different materials and unmatched hardness range exist in the existing universal standard test block. The existing universal standard test block is utilized to check the instrument, so that the significance is not great, the detection result is still unreliable, troubles and misleading are easily brought to detection personnel, and the requirements of detection work are difficult to meet.
In the checking process of an actual Richter hardness tester, the existing universal standard test blocks are only three types, the problems of unclear materials and unmatched hardness ranges exist, when the material grade and the hardness range of an impact sample are changed, the checking of an instrument loses the significance of the instrument, the detection result is still unreliable, troubles and misleading are easily brought to detection personnel, and the requirements of actual detection work are difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a portable Leeb hardness tester calibration test block which has reasonable structural design, various materials and matched hardness range and is suitable for multi-material check.
The technical scheme adopted by the utility model for solving the problems is as follows: this portable richter sclerometer calibration test block suitable for many materials are checked, its structural feature lies in: the test block comprises a test block, a pattern engraving area, a bottom support and an upper cover, wherein the appearance of the test block is cylindrical, the pattern engraving area is arranged on the side wall of the test block, the lower end of the test block is tightly hooped by the bottom support, and the upper cover is arranged at the upper end of the test block.
Furthermore, the test block comprises a first sector test block, a second sector test block, a third sector test block, a fourth sector test block, a fifth sector test block and a sixth sector test block which are all arranged in a sector structure, and the first sector test block, the second sector test block, the third sector test block, the fourth sector test block, the fifth sector test block and the sixth sector test block are mutually embedded.
Furthermore, the side walls of the first sector test block, the second sector test block, the third sector test block, the fourth sector test block, the fifth sector test block and the sixth sector test block are all provided with grain carving areas.
Furthermore, the first sector test block, the second sector test block, the third sector test block, the fourth sector test block, the fifth sector test block and the sixth sector test block are made of different materials, and the materials of the first sector test block, the second sector test block, the fifth sector test block and the sixth sector test block represent carbon steel, 1Cr steel, 2.25Cr steel, 9-12 Cr steel, 18Cr-8Ni steel and nickel-based alloy steel.
Furthermore, the texture carving area is internally provided with a material grade of the test block and a calibrated hardness indication value, wherein the two hardness indication values are a Richter hardness value (HL) and a Brinell hardness value (HB), and the calibration needs to be carried out in a laboratory.
Further, the specification of the test block is phi 90 × 55mm, the specifications of the first sector test block, the second sector test block, the third sector test block, the fourth sector test block, the fifth sector test block and the sixth sector test block are the same, the radii are 45mm, the heights are 55mm, the angles are 60 °, the errors of the radii and the heights are +/-1 mm, and the error of the angles is +/-1 °.
Furthermore, the material marks of the first sector test block, the second sector test block, the third sector test block, the fourth sector test block, the fifth sector test block and the sixth sector test block are 20G, 15CrMoG, P22, P91, TP347H and R26 respectively.
Further, the height of the shell of the bottom support does not exceed 30mm, so that information in the grain carving area of the arc surface of each sector test block which is arranged in the sector structure is exposed.
Further, the bottom support 8 is made of plastic or rubber.
Compared with the prior art, the utility model has the following advantages: the portable Leeb hardness tester calibration test block suitable for multi-material verification can realize on-site quick selection of standard test blocks which are consistent with the material grade of a sample to be impacted and have matched hardness ranges for instrument verification; the material grade and the hardness range of the test block almost cover all monitored metal materials in the current power industry; the understanding of the checking principle of the Leeb hardness meter by the detection personnel is deepened; the error of the instrument is reduced to the maximum extent, and the accuracy of measurement is improved.
The portable Leeb hardness tester calibration test block suitable for multi-material check comprises a test block whole body, a sector test block, a grain carving area, a plastic or bottom support and an upper cover; the test block is integrally cylindrical and is formed by mutually embedding 6 sectors with the same specification, and the sectors have homogeneity, tissue stability and test surface hardness uniformity; the grain carving area is positioned on the arc surface of the sector, and the display information comprises the material grade and the hardness calibration value of the test block; the test block is wholly clamped by plastic or a bottom support and is provided with an upper cover.
The portable Leeb hardness tester calibration test block suitable for multi-material checking can reduce the error of an instrument to the maximum extent and improve the accuracy of measurement.
Drawings
Fig. 1 is a schematic diagram of a standard test block structure commonly used in the prior art.
FIG. 2 is a schematic structural diagram of a portable Leeb hardness tester calibration block suitable for multi-material verification according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of an impact test of a portable Leeb hardness tester calibration block suitable for multi-material verification according to an embodiment of the present invention.
In the figure: the device comprises a first sector test block 1, a second sector test block 2, a third sector test block 3, a fourth sector test block 4, a fifth sector test block 5, a sixth sector test block 6, a grain carving area 7, a bottom support 8, an upper cover 9 and a portable Richter scale hardness tester 10.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 2 to 3, it should be understood that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical essence, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes, should still fall within the scope of the present invention without affecting the functions and the achievable objectives of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle" and "one" are used for clarity of description, and are not used to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
The portable richter hardness tester calibration test block suitable for many materials are checked in this embodiment, including the appearance for the test block of cylinder, the region 7 is carved to the line, collet 8 and upper cover 9, the regional 7 setting of carving the line is at the lateral wall of test block, the lower extreme of test block is by collet 8 lock ring, upper cover 9 sets up the upper end at the test block.
The test block in this embodiment includes a sector test block 1, a sector test block 2, a sector test block 3, a sector test block 4, a sector test block 5 and a sector test block 6, all of which are sector structures, the sector test block 1, the sector test block 2, the sector test block 3, the sector test block 4, the sector test block 5 and the sector test block 6 have the same specification, and the sector test block 1, the sector test block 2, the sector test block 3, the sector test block 4, the sector test block 5 and the sector test block 6 are mutually embedded.
In this embodiment, the side walls of the first sector test block 1, the second sector test block 2, the third sector test block 3, the fourth sector test block 4, the fifth sector test block 5 and the sixth sector test block 6 are all provided with the grain carving area 7, and the first sector test block 1, the second sector test block 2, the third sector test block 3, the fourth sector test block 4, the fifth sector test block 5 and the sixth sector test block 6 are made of different materials.
The texture carving area 7 in this embodiment is provided with a material grade of the test block and a calibrated hardness indication value, the hardness indication values are two, the hardness indication values are a Richter hardness value HL and a Brinell hardness value HB respectively, the material of the bottom support 8 is plastic or rubber, and the height of the shell of the bottom support 8 is not more than 30mm, so that information in the texture carving area 7 of the arc surface of each sector test block which is arranged in a sector structure can be exposed.
The specification of the test block in this embodiment is Φ 90 × 55mm, the specifications of the first sector test block 1, the second sector test block 2, the third sector test block 3, the fourth sector test block 4, the fifth sector test block 5, and the sixth sector test block 6 are the same, the radii are all 45mm, the heights are all 55mm, and the angles are all 60 °.
In this example, the material designations of the first sector test piece 1, the second sector test piece 2, the third sector test piece 3, the fourth sector test piece 4, the fifth sector test piece 5, and the sixth sector test piece 6 are 20G, 15CrMoG, P22, P91, TP347H, and R26, respectively.
Specifically, the test block is cylindrical in shape and is formed by mutually embedding 6 sector test blocks with the same specification, namely a first sector test block 1, a second sector test block 2, a third sector test block 3, a fourth sector test block 4, a fifth sector test block 5 and a sixth sector test block 6; each sector test block represents a material and is specially manufactured to ensure the homogeneity of the material, the stability of the structure and the uniformity of the hardness of a test surface; the material grade and the calibrated hardness value of each test block are arranged in the circular arc side grain engraving area 7 of each test block; the test block is wholly clamped at the bottom by a plastic or rubber bottom support 8, and an upper cover 9 can be provided.
The overall specification of the test block is phi 90 multiplied by 55mm, the radius of each sector test block is 45mm, the height is 55mm, and the angle is 60 degrees, wherein the errors of the radius and the height are +/-1 mm, and the error of the angle is +/-1 degree; the overall specification of the test block is similar to GB/T17394.3-2012 part 3 of the Metal Material hardness in Rich test: calibration of the standard hardness block the specified geometry remained consistent.
The material of each sector test block respectively represents carbon steel, 1Cr steel, 2.25Cr steel, 9-12 Cr steel, 18Cr-8Ni steel and nickel-based alloy steel; the material selection of each sector test block can also be changed according to the actual requirements of the industry, and is not limited to the 6 materials.
The hardness indication values are two, namely a Richter hardness value HL and a Brinell hardness value HB, and the hardness indication values are calibrated in a laboratory.
The height of the shell of the bottom support 8 tightly hooping the bottom of the test block is not more than 30mm, and the grain carving information in the grain carving area 7 of the arc surface of each sector test block is ensured to be exposed.
The test block is suitable for all D-type impact devices; of course, the test block is equally applicable to other types of D, DC, S, E, D +15, DL, C, etc. percussion devices.
The chamfer angle of the edge of the test block is 1 multiplied by 45 degrees, the flatness of the test surface and the supporting surface is less than or equal to 0.02mm, the parallelism of the test surface and the supporting surface is less than or equal to 0.03mm/50mm, and the roughness Ra of the test surface is less than or equal to 0.05 mu m.
The operation process is as follows:
assuming that the material of a pre-impact object is 12Cr1MoVG, and a detection and use instrument is an American GR model HT-2000A Leeb hardness tester, before impact, the instrument is firstly set, wherein the impact direction, hardness index type and material channel are selected, the impact direction is selected according to the actual situation, Brinell hardness HB can be selected as the hardness index, and ST is selected as the material channel to represent the steel material; and then selecting a sector test block 2 as a check test block, and performing a part 2 of a metal material hardness-Richch test according to GB/T17394.2-2012: and (4) carrying out impact operation in the step of the inspection and calibration of the hardness tester, comparing an impact indicating value with a calibration value of the test block 2, wherein if the indicating value error is less than or equal to 12, the instrument does not need to be calibrated, otherwise, corresponding calibration is carried out according to the indicating value error, so that the whole process of instrument calibration is completed, and the instrument can be directly used for impact tests.
In the test process, if the impact object changes, for example, the material is TP347HFG, the material channel of the instrument needs to be changed to SS, which represents the stainless steel material; and then selecting the sector test block 5 as a checking test block, and repeating the steps, thereby completing the whole instrument checking process due to the change of the impact object in the detection process.
In conclusion, the material grade and the hardness range of the test block almost cover all monitored metal materials in the current power industry; the matching of the material and the hardness range can be quickly completed in the checking process of the Leeb hardness tester; the understanding of the checking principle of the Leeb hardness meter by the detection personnel is deepened; the error of the instrument is reduced to the maximum extent, and the accuracy of measurement is improved.
And will be apparent to those skilled in the art from the foregoing description.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the utility model are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.
Claims (7)
1. The utility model provides a portable richter sclerometer calibration test block suitable for many materials are checked which characterized in that: the test block comprises a cylindrical test block body, a grain carving area (7), a bottom support (8) and an upper cover (9), wherein the grain carving area (7) is arranged on the side wall of the test block body, the lower end of the test block body is tightly hooped by the bottom support (8), and the upper cover (9) is arranged at the upper end of the test block body.
2. The portable richter scale calibration block for multi-material collation according to claim 1, wherein: the test block comprises a first sector test block (1), a second sector test block (2), a third sector test block (3), a fourth sector test block (4), a fifth sector test block (5) and a sixth sector test block (6) which are all arranged in a sector structure, wherein the first sector test block (1), the second sector test block (2), the third sector test block (3), the fourth sector test block (4), the fifth sector test block (5) and the sixth sector test block (6) are mutually embedded.
3. The portable richter scale calibration block for multi-material collation according to claim 2, wherein: the side walls of the first sector test block (1), the second sector test block (2), the third sector test block (3), the fourth sector test block (4), the fifth sector test block (5) and the sixth sector test block (6) are provided with grain carving areas (7).
4. The portable richter scale calibration block for multi-material collation according to claim 2, wherein: the first sector test block (1), the second sector test block (2), the third sector test block (3), the fourth sector test block (4), the fifth sector test block (5) and the sixth sector test block (6) are made of different materials, wherein the materials respectively represent carbon steel, 1Cr steel, 2.25Cr steel, 9-12 Cr steel, 18Cr-8Ni steel and nickel-based alloy steel.
5. The portable richter scale calibration block for multi-material collation according to claim 2, wherein: the texture carving area (7) is internally provided with a material grade of the test block and a calibrated hardness indication value, and the two hardness indication values are a Leeb hardness value (HL) and a Brinell hardness value (HB) respectively.
6. The portable richter scale calibration block for multi-material collation according to claim 2, wherein: the specification of the test block is phi 90 multiplied by 55mm, the specifications of the first sector test block (1), the second sector test block (2), the third sector test block (3), the fourth sector test block (4), the fifth sector test block (5) and the sixth sector test block (6) are the same, the radius is 45mm, the height is 55mm, the angle is 60 degrees, the radius and the height error are +/-1 mm, and the angle error is +/-1 degree.
7. The portable richter scale calibration block for multi-material collation according to claim 2, wherein: the height of the shell of the bottom support (8) is not more than 30mm, so that information in the engraved area (7) of the arc surface of each sector test block which is arranged in a sector structure is exposed.
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| CN202121277511.XU CN215727244U (en) | 2021-06-08 | 2021-06-08 | Portable Leeb hardness tester calibration test block suitable for multi-material check |
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| CN202121277511.XU CN215727244U (en) | 2021-06-08 | 2021-06-08 | Portable Leeb hardness tester calibration test block suitable for multi-material check |
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| CN202121277511.XU Active CN215727244U (en) | 2021-06-08 | 2021-06-08 | Portable Leeb hardness tester calibration test block suitable for multi-material check |
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