Instrument for measuring lateral expansion value of impact sample

Abstract

The embodiment of the invention provides a tester for the lateral expansion value of an impact sample. The tester comprises a bottom plate, a pressure sensor and a controller, the sample platform is used for placing the impact sample and is fixedly arranged on the bottom plate; the first measuring assembly is fixedly arranged on the bottom plate and is positioned on the first side of the sample platform along the radial direction; the second measuring assembly is arranged on the bottom plate in a sliding mode and located on the second side of the sample platform in the radial direction of the sample platform; the first measuring assembly and the second measuring assembly are matched with each other so as to measure the side expansion values of the two sides of the impact sample at the same time. By means of the bottom plate, the sample platform, the first measuring assembly and the second measuring assembly, the lateral expansion values of the two sides of the impact sample can be measured at the same time, the measuring frequency is reduced, operation is easy and convenient, and efficiency and precision are higher.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the field of measurement technology, and particularly relate to an instrument for measuring the side expansion value of an impact specimen. Background Art

[0002] The impact side expansion value is an important data obtained from the impact test, and is an indicator used to reflect the impact toughness of metal materials. In foreign standards and specifications, the impact side expansion value can be used alone as a toughness indicator in some special occasions. For example, the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC) uses the lateral expansion index for the toughness of high-alloy steel in the liquid nitrogen temperature zone, high-strength steel, and ferritic steel after heat treatment strengthening; for materials where the relationship between impact energy and lateral expansion is unclear, lateral expansion and impact energy are used together as indicators. In domestic standards and specifications, such as TSG 21-2016, GB / T 150 and the new HG / T

[0003] The draft for comments on 20585 also mentioned the lateral expansion value. The lateral expansion value LE is a new addition to the 2016 version of the Technical Supervision Regulations for Safety of Stationary Pressure Vessels (Fixed Regulations). The standard believes that "for high-strength steel, the lateral expansion value LE can better reflect the toughness of the material". Please refer to the revision notes of TSG 21-2016.

[0004] At present, the main methods for measuring the impact side expansion value are: vernier caliper method, image analysis method, and measuring instrument determination method. The vernier caliper method is to use a vernier caliper to measure the original side and maximum deformation size of the sample, and then calculate the side expansion value; the image analysis method is to use optical imaging technology to collect the image of the sample notch to the computer monitor, and measure the side expansion value by special measurement software; the measuring instrument determination method is to use a micrometer measuring instrument to measure the side expansion on both sides of the sample, and then calculate the side expansion value. All of the above methods have certain disadvantages: both the vernier caliper method and the instrument method require two or more measurements of the impact sample, resulting in large measurement errors and more trouble; the image analysis method is time-consuming, and factors such as human judgment have a greater impact on the results. Summary of the invention

[0005] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide an instrument for measuring the lateral expansion value of an impact specimen.

[0006] The embodiment of the present disclosure provides a measuring instrument for the side expansion value of an impact specimen, the

[0007] The measuring instrument includes:

[0008] Base plate;

[0009] A sample platform, used for placing the impact sample and fixed to the bottom plate;

[0010] A first measuring component is fixed to the bottom plate and is located at a first side of the sample platform along the radial direction thereof;

[0011] A second measuring component is slidably disposed on the bottom plate and is located at a second side of the sample platform along the radial direction thereof;

[0012] The first measuring assembly and the second measuring assembly cooperate to measure the lateral expansion values ​​of both sides of the impact specimen simultaneously.

[0013] Optionally, the first measuring component includes a first fixing member and a first measuring member;

[0014] The first fixing member is fixed to the bottom plate and is located at a first side of the sample platform along its radial direction. The first measuring member is fixed to a side of the first fixing member away from the bottom plate. The measuring end of the first measuring member is used to contact one side of the impact sample.

[0015] Optionally, the first fixing member includes a first sliding block and a fixing block;

[0016] The first sliding block is fixed to the bottom plate and is located at a first radial side of the sample platform. The fixing block is fixed to a side of the first sliding block away from the bottom plate. The side of the fixing block away from the bottom plate is used for fixedly connecting the first measuring piece.

[0017] Optionally, the second measuring component includes a second sliding member and a second measuring member;

[0018] The second sliding member is slidably disposed on the bottom plate and is located at the second side of the sample platform along its radial direction. The second measuring member is fixedly disposed on the side of the second sliding member away from the bottom plate. The side measuring end of the second measuring member is used to contact the other side of the impact sample.

[0019] Optionally, the second sliding member includes a second sliding block and a connecting block;

[0020] The second slider is slidably disposed on the bottom plate and is located at the second side of the sample platform along its radial direction. The connecting block is fixedly disposed on the side of the second slider away from the bottom plate. The side of the connecting block away from the bottom plate is used for fixedly connecting the second measuring piece.

[0021] Optionally, the axis of the sample platform is perpendicular to the axis of the bottom plate, and the center lines of the first measuring member and the second measuring member are collinear and parallel to the axis of the bottom plate.

[0022] Optionally, both the first measuring piece and the second measuring piece are micrometer measuring instruments.

[0023] Optionally, the measuring instrument further comprises an elastic member;

[0024] One end of the elastic member is connected to the second measuring component, and the other end of the elastic member is connected to the sample platform.

[0025] Optionally, the measuring instrument further comprises a track;

[0026] The track is fixed on the bottom plate, and the first measuring component is slidably arranged on the track.

[0027] Optionally, the measuring instrument further comprises a connecting piece and a pull rod;

[0028] One end of the connecting member is hinged to the pull rod, the other end of the connecting member is hinged to the second measuring assembly, and the bottom of the pull rod is hinged to the end of the bottom plate along the second radial side direction of the sample platform through a positioning block.

[0029] The instrument for measuring the side expansion value of the impact specimen in the embodiment of the present disclosure can simultaneously measure the side expansion values ​​on both sides of the impact specimen through the provided base plate, specimen platform, first measuring component and second measuring component, thereby reducing the number of measurements, simplifying and facilitating operation, and improving efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an instrument for measuring the side expansion value of an impact specimen according to an embodiment of the present disclosure;

[0031] Figure 2 A top view of an instrument for measuring the side expansion value of an impact specimen according to another embodiment of the present disclosure;

[0032] Figure 3 The present invention is a side view of an instrument for measuring the side expansion value of an impact specimen according to another embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figures 1 to 3As shown, an instrument 100 for measuring the side expansion value of an impact specimen comprises: a bottom plate 110. A specimen platform 120, which is used to place the impact specimen 200 and is fixed to the bottom plate 110. A first measuring component 130, which is fixed to the bottom plate 110 and is located at a first side of the specimen platform 200 along its radial direction. A second measuring component 140, which is slidably disposed on the bottom plate 110 and is located at a second side of the specimen platform 200 along its radial direction. The first measuring component 130 and the second measuring component 140 cooperate to measure the side expansion value of both sides of the impact specimen 200 simultaneously.

[0035] Specifically, Figures 1 to 3 As shown, a sample platform 120 is fixedly arranged in the central area above the bottom plate 110, a first measuring component 130 is fixedly arranged on the left side of the bottom plate 110, and a second measuring component 140 is slidably arranged on the right side of the bottom plate 110. When in use, the second measuring component 140 is pulled rightward, the second measuring component 140 slides rightward, and then the standard sample is placed on the sample platform 120, the second measuring component 140 is slowly released, and the second measuring component 140 slides leftward until the measuring ends of the first measuring component 130 and the second measuring component 140 are respectively in contact with the two sides of the standard sample, and at this time, the first measuring component 130 and the second measuring component 140 are zeroed. After zeroing, continue to slide the second measuring component 140 to the right, remove the standard specimen and place the impact specimen 200 on the specimen platform 120, slowly release the second measuring component 140, and slide the second measuring component 140 to the left until the measuring ends of the first measuring component 130 and the second measuring component 140 respectively abut against the two sides of the impact specimen 200. At this time, record the values ​​of the first measuring component 130 and the second measuring component 140 to simultaneously measure the data on both sides of the impact specimen 200, and simultaneously measure the lateral expansion values ​​on both sides of the impact specimen 200.

[0036] The instrument for measuring the side expansion value of the impact specimen in the embodiment of the present disclosure can simultaneously measure the side expansion values ​​on both sides of the impact specimen through the provided base plate, specimen platform, first measuring component and second measuring component, thereby reducing errors and the number of measurements, being simple and convenient to operate, and having higher efficiency and accuracy.

[0037] For example, Figures 1 to 3 As shown, the first measuring assembly 130 includes a first fixing member 131 and a first measuring member 132. The first fixing member 131 is fixed to the bottom plate 110 and is located at a first side of the sample platform 120 along its radial direction, and the first measuring member 132 is fixed to a side of the first fixing member 131 away from the bottom plate 110, and a measuring end of the first measuring member 132 is used to contact a side of the impact sample 200.

[0038] Furthermore, the first fixing member 131 includes a first slider 1311 and a fixing block 1312. The first slider 1311 is fixed to the bottom plate 110 and is located at a first side of the sample platform 120 along its radial direction, and the fixing block 1312 is fixed to a side of the first slider 1311 away from the bottom plate 110, and the side of the fixing block 1312 away from the bottom plate 110 is used for fixing and connecting the first measuring member 132.

[0039] Specifically, Figures 1 to 3 As shown, a first slider 1311 is fixedly provided on the upper left side of the bottom plate 110, and the first slider 1311 is located on the left side of the sample platform 120. A fixed block 1312 is fixedly provided above the first slider 1311, and a first measuring piece 132 is fixedly provided above the fixed block 1312. The measuring end of the first measuring piece 132 corresponds to one side of the impact sample 200, and is used to contact with one side of the impact sample 200 to measure the side expansion value of one side of the impact sample 200.

[0040] The instrument for measuring the side expansion value of an impact specimen in the embodiment of the present disclosure can make the operation of the instrument simpler and more convenient by fixing the first fixing member and the first measuring member. The side expansion value of the impact specimen can be measured only by controlling the second measuring component, thereby reducing the movement of the measuring device during the process of measuring the side expansion value of the impact specimen, thereby improving the measurement efficiency and accuracy.

[0041] For example, Figures 1 to 3 As shown, the second measuring assembly 140 includes a second sliding member 141 and a second measuring member 142. The second sliding member 141 is slidably disposed on the bottom plate 110 and is located at the second side of the sample platform 120 along the radial direction thereof, and the second measuring member 142 is fixedly disposed on the side of the second sliding member 141 away from the bottom plate 110, and the side measuring end of the second measuring member 142 is used to contact the other side of the impact sample 200.

[0042] Furthermore, the second sliding member 141 includes a second slider 1411 and a connecting block 1412. The second slider 1411 is slidably disposed on the bottom plate 110 and is located at the second side of the sample platform 120 along the radial direction thereof, and the connecting block 1412 is fixedly disposed on the side of the second slider 1411 away from the bottom plate 110, and the side of the connecting block 1412 away from the bottom plate 110 is used for fixedly connecting the second measuring member 142.

[0043] Specifically, Figures 1 to 3As shown, a second slider 1411 is slidably provided on the upper right side of the bottom plate 110, and the second slider 1411 is located on the right side of the sample platform 120. A connecting block 1412 is fixedly provided above the second slider 1411, and a second measuring piece 142 is fixedly provided above the connecting block 1412. The measuring end of the second measuring piece 142 corresponds to the other side of the impact sample 200, and is used for contacting the other side of the impact sample 200 to measure the side expansion value of the other side of the impact sample 200.

[0044] As a specific example, Figures 1 to 3 As shown, both the first measuring member 132 and the second measuring member 142 are micrometer measuring instruments. For example, the first measuring member 132 is set as a first micrometer measuring instrument, and the second measuring member 142 is set as a second micrometer measuring instrument. When using, the user first presses the switch opening device on the first micrometer measuring instrument and the second micrometer measuring instrument, pulls the second measuring component 140 to the right, and the second measuring component 140 slides to the right, then places the standard sample on the sample platform 120, slowly releases the second measuring component 140, and slides the second measuring component 140 to the left, until the measuring rods of the first micrometer measuring instrument and the second micrometer measuring instrument respectively abut against the two sides of the standard sample, and at this time, press the zero adjustment buttons on the first micrometer measuring instrument and the second micrometer measuring instrument respectively to perform zero adjustment. After zeroing is completed, continue to slide the second measuring component 140 to the right, remove the standard sample and place the impact sample 200 on the sample platform 120, slowly release the second measuring component 140, and slide the second measuring component 140 to the left until the measuring rods of the first micrometer measuring instrument and the second micrometer measuring instrument respectively abut against the two sides of the impact sample 200, at this time record the values ​​of the first micrometer measuring instrument and the second micrometer measuring instrument, realize the simultaneous measurement of the data on both sides of the impact sample 200, and can simultaneously measure the lateral expansion values ​​on both sides of the impact sample 200.

[0045] The instrument for measuring the side expansion value of the impact specimen in the embodiment of the present disclosure can slide on the bottom plate by operating the second sliding member and the second measuring member, and the operation and measurement method is simple and convenient, the zeroing process is simple, and the measurement efficiency and accuracy are higher, and the side expansion values ​​on both sides of the impact specimen can be measured simultaneously.

[0046] For example, Figure 1 As shown, the measuring instrument 100 further includes an elastic member 150 . One end of the elastic member 150 is connected to the second measuring assembly 140 , and the other end of the elastic member 150 is connected to the sample platform 120 .

[0047] Specifically, Figure 1As shown, a connecting member 300 is provided on the right side of the connecting block 1412, and a connecting member 300 is also provided on the right side of the sample platform 120. One end of the elastic member 150 is connected to the connecting member 300 on the connecting block 1412, and the other end of the elastic member 150 is connected to the connecting member 300 on the sample platform 120. The elastic member 150 can be provided so that after the second measuring component 140 is pulled to the right, the elastic force of the elastic member 150 itself can drive the second measuring component 140 to automatically slide to the left to return to its original position, and the measuring rods of the first micrometer measuring instrument and the second micrometer measuring instrument can automatically abut against the two sides of the sample.

[0048] Furthermore, if Figures 1 to 3 As shown, the measuring instrument 100 further includes a track 160. The track 160 is fixed to the bottom plate 110, and the second measuring component 140 is slidably disposed on the track 160.

[0049] Specifically, Figures 1 to 3 As shown, a track 160 is fixedly connected above the bottom plate 110 through a connecting member 300, and a second measurement component 140 is slidably arranged on the track 160. It should be noted that the track 160 can be arranged only on the right side of the bottom plate 110, and the track 160 is only located on the right side of the sample platform 120 for the second measurement component 140 to slide. The track 160 can also be arranged to be equal in length to the bottom plate 110 and be located entirely on the bottom plate 110, and the second measurement component 140 slides on the corresponding track 160 on the right side of the sample platform 120. By setting the track, the second measurement component can slide on the track, which can effectively reduce the friction resistance of the second measurement component during the movement process, increase the movement rate of the second measurement component, and thus improve the measurement efficiency.

[0050] It should be further explained that the connecting member 300 described above may be made of screws, bolts and other parts, and the embodiments of the present disclosure do not impose any specific limitation on this.

[0051] For example, Figures 1 to 3 As shown, the axis of the sample platform 120 is perpendicular to the axis of the bottom plate 110 , and the center lines of the first measuring member 132 and the second measuring member 142 are collinear and parallel to the axis of the bottom plate 110 .

[0052] Specifically, Figures 1 to 3 As shown, the axis of the sample platform 120 in the vertical direction and the axis of the bottom plate 110 in the horizontal direction are perpendicular to each other, that is, the sample platform 120 is perpendicular to the bottom plate 110. The center lines of the first measuring piece 132 and the second measuring piece 142 in the horizontal direction are collinear and parallel to the axis of the bottom plate 110 in the horizontal direction. Such an arrangement enables the measuring ends of the first measuring piece 132 and the second measuring piece 142 to maintain the same horizontal line with the sample when the sample is placed on the sample platform 120, and the measurement accuracy is higher.

[0053] For example, Figure 1 As shown, the measuring instrument 100 further includes a connecting member 170 and a pull rod 180. One end of the connecting member 170 is hinged to the pull rod 180, and the other end of the connecting member 170 is hinged to the second measuring assembly 140. The bottom of the pull rod 180 is hinged to the end of the bottom plate 110 along the radial second side direction of the sample platform 120 through a positioning block 190.

[0054] Specifically, Figure 1 As shown, one end of the connecting member 170 is hinged to the rod body of the pull rod 180, and the other end of the connecting member 170 is hinged to the right end of the connecting block 1412. The bottom of the pull rod 180 is hinged to the right end of the bottom plate 110 by setting a positioning block 190. By hingedly connecting the bottom of the pull rod 180 to the right end of the bottom plate 110 and hingedly connecting the rod body of the pull rod 180 to the right end of the connecting block 1412, the pull rod 180 can be rotated rightward to drive the second measuring component 140 to slide rightward as a whole, which is labor-saving and simple and convenient to operate.

[0055] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. An instrument for measuring the side expansion value of an impact specimen, characterized in that: The measuring instrument comprises: Base plate; A sample platform, used for placing the impact sample and fixed to the bottom plate; A first measuring component is fixed to the bottom plate and is located at a first side of the sample platform along the radial direction thereof; A second measuring component is slidably disposed on the bottom plate and is located at a second side of the sample platform along the radial direction thereof; The first measuring assembly and the second measuring assembly cooperate to measure the lateral expansion values ​​of both sides of the impact specimen simultaneously.

2. The instrument for measuring the impact specimen side expansion value according to claim 1, characterized in that: The first measuring assembly includes a first fixing member and a first measuring member; The first fixing member is fixed to the bottom plate and is located at a first side of the sample platform along its radial direction. The first measuring member is fixed to a side of the first fixing member away from the bottom plate. The measuring end of the first measuring member is used to contact one side of the impact sample.

3. The instrument for measuring the impact specimen side expansion value according to claim 2, characterized in that: The first fixing member includes a first sliding block and a fixing block; The first sliding block is fixed to the bottom plate and is located at a first radial side of the sample platform. The fixing block is fixed to a side of the first sliding block away from the bottom plate. The side of the fixing block away from the bottom plate is used for fixedly connecting the first measuring piece.

4. The instrument for measuring the impact specimen side expansion value according to claim 2, characterized in that: The second measuring assembly includes a second sliding member and a second measuring member; The second sliding member is slidably disposed on the bottom plate and is located at the second side of the sample platform along its radial direction. The second measuring member is fixedly disposed on the side of the second sliding member away from the bottom plate. The side measuring end of the second measuring member is used to contact the other side of the impact sample.

5. The instrument for measuring the impact specimen side expansion value according to claim 4, characterized in that: The second sliding member includes a second sliding block and a connecting block; The second slider is slidably disposed on the bottom plate and is located at the second side of the sample platform along its radial direction. The connecting block is fixedly disposed on the side of the second slider away from the bottom plate. The side of the connecting block away from the bottom plate is used for fixedly connecting the second measuring piece.

6. The instrument for measuring the impact specimen side expansion value according to claim 4, characterized in that: The axis of the sample platform is perpendicular to the axis of the bottom plate, and the center lines of the first measuring piece and the second measuring piece are collinear and parallel to the axis of the bottom plate.

7. The instrument for measuring the impact specimen side expansion value according to claim 4, characterized in that: The first measuring piece and the second measuring piece are both micrometer measuring instruments.

8. The instrument for measuring the impact specimen side expansion value according to any one of claims 1 to 7, characterized in that: The measuring instrument also includes an elastic member; One end of the elastic member is connected to the second measuring component, and the other end of the elastic member is connected to the sample platform.

9. The instrument for measuring the side expansion value of an impact specimen according to any one of claims 1 to 7, characterized in that: The measuring instrument also includes a track; The track is fixed on the bottom plate, and the first measuring component is slidably arranged on the track.

10. The instrument for measuring the side expansion value of an impact specimen according to any one of claims 1 to 7, characterized in that: The measuring instrument also includes a connecting piece and a pull rod; One end of the connecting member is hinged to the pull rod, the other end of the connecting member is hinged to the second measuring assembly, and the bottom of the pull rod is hinged to the end of the bottom plate along the second radial side direction of the sample platform through a positioning block.

Images