CN112985939A - Charpy impact sample processing method for Charpy impact test - Google Patents
Charpy impact sample processing method for Charpy impact test Download PDFInfo
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- 238000009863 impact test Methods 0.000 title claims abstract description 144
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- 238000003466 welding Methods 0.000 claims abstract description 85
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- 230000004927 fusion Effects 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 26
- 239000007769 metal material Substances 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 13
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- 238000003754 machining Methods 0.000 claims description 5
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- 238000005260 corrosion Methods 0.000 claims description 3
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- 238000004519 manufacturing process Methods 0.000 description 1
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- G—PHYSICS
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- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
The invention provides a Charpy impact sample processing method for a Charpy impact test, which is applied to the technical field of dynamic mechanical property test methods, and comprises the following processing steps: when the section of the Charpy impact sample is single-side welded or double-side welded with a cut section similar to the single-side welded, the straight line b1 is parallel to the upper surface and the lower surface of the impact sample, has equal distance from the upper surface and the lower surface, is intersected with the fusion line at the point A, the straight line a1 passes through the point A and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, and the position of the a1 is taken as the position of the notch center line of the Charpy impact sample. The method for processing the Charpy impact test sample for the Charpy impact test can effectively solve the problem of positioning the notch processing position of the Charpy impact test sample of the material at the weld fusion line in the Charpy impact test approved by the existing welding process, ensure the reliable performance of the Charpy impact test and ensure the accurate and reliable test result.
Description
Technical Field
The invention belongs to the technical field of dynamic mechanical property test methods, and particularly relates to a Charpy impact sample processing method for a Charpy impact test.
Background
The Charpy impact test is a dynamic mechanical property test method which utilizes the energy conservation principle to break a Charpy impact test sample with a specific shape and size processed and manufactured according to relevant standards under the action of impact load so as to measure the impact absorption energy of the Charpy impact test sample in the fracture process. The charpy impact test has become a traditional mechanical property test for measuring the toughness of metal materials which is most widely applied due to the characteristics of simple and convenient sample processing, short test time and sensitivity of test data to material tissue structure, metallurgical defects and the like, is also one of important means for evaluating the toughness of metal materials under impact load, and is more an important test method for testing the toughness of materials in the welding process approval test in engineering. The factors influencing the Charpy impact test result of the metal material are many, and the main factors include the processing and manufacturing of the material and the sample, the measurement instrument and equipment, the operation of personnel and the like. The machining position of the notch of the sample has the largest influence on the test result, and if the machining position of the notch is inaccurate, the test result cannot accurately reflect the actual toughness level of the test material.
For the welding of metal materials, a welding seam is the weakest link of the whole steel, and the steel is easy to break and fail from the position of the welding seam. The weld seam is the juncture where the weld metal and the metal material substrate are combined, and is also the place where the weld seam is most prone to failure. Therefore, the impact absorption energy at the weld line is important for the trial evaluation of the safety performance at the weld joint. At present, standards for Charpy impact test methods and sample processing formed at home and abroad include GB/T229-2007 standards for Charpy pendulum impact test methods for metal materials, GB/T2650-2008 standards for welded joint impact test methods, ISO148-2006 standards for Charpy pendulum impact tests for metal materials, ISO9016-2012 standards for weld destructive tests for metal materials, namely impact tests and the like. Although charpy impact specimen notch processing positions of the weld line and the heat affected zone are specified in these standards, the charpy impact specimen notch processing position at the weld line is not specifically described. The welding line of the metal material welding line has the characteristics of irregular shape, very narrow shape and the like, so that the Charpy impact energy at the welding line is difficult to obtain, and the method for determining the processing position of the Charpy impact specimen notch at the welding line cannot meet the actual requirement in the existing various standards.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the defects of the prior art, the method for processing the Charpy impact specimen is simple in step, can effectively solve the problem of positioning the notch processing position of the Charpy impact specimen of the material at the welding line in the Charpy impact test approved by the existing welding process, ensures that the Charpy impact test is reliably carried out, and is accurate and reliable in test result.
To solve the technical problems, the invention adopts the technical scheme that:
the invention relates to a method for processing a Charpy impact sample for a Charpy impact test, which comprises the following processing steps: 1) firstly, taking down a Charpy impact test sample blank from a test board approved by a welding process; 2) grinding and polishing one side surface of a welding line of the Charpy impact test sample blank, and then selecting a corrosive liquid to corrode according to the material quality of the Charpy impact test sample blank to form a corrosion surface; 3) determining the position of a central line of a notch on the center of a welding line and a heat affected zone of the Charpy impact test sample blank respectively; 4) the Charpy impact test sample blank comprises three different conditions that the section is single-side welded or double-side welded with a cut section similar to the single-side welded, the section is double-side welded containing the root of a weld line fusion line, the distance between the root of the weld line fusion line and the upper surface and the lower surface of the Charpy impact test sample is close, the section is double-side welded containing the root of the weld line fusion line, the distance between the root of the weld line fusion line and the upper surface and the distance between the root of the Charpy impact test sample and the lower surface of the Charpy impact test sample are greatly different, and the position of a notch central line of the; 5) after the position of the central line of the Charpy impact sample notch is well positioned, cutting lines are respectively drawn at the two sides of the central line, the Charpy impact sample blank is cut into a new sample blank along the cutting lines, the new sample blank is sent to a grinding machine to be processed into a Charpy impact sample with a surface having roughness, a V-shaped notch is drawn out by using an impact sample notch broaching machine, and then a Charpy impact test is carried out on the Charpy impact sample; when the section of the Charpy impact sample is single-side welded or double-side welded with a cut section similar to the single-side welded, the straight line b1 is parallel to the upper surface and the lower surface of the impact sample, has equal distance from the upper surface and the lower surface, is intersected with the fusion line at the point A, the straight line a1 passes through the point A and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, and the position of the a1 is taken as the position of the notch center line of the Charpy impact sample.
When the cross section of the Charpy impact specimen is double-sided welding containing the root of a welding line, and the distance between the root of the welding line and the upper surface and the lower surface of the Charpy impact specimen has a large difference, the first determination method comprises the following steps: the straight line B2 is parallel to the upper surface and the lower surface of the impact sample, is equal in distance from the upper surface and the lower surface, intersects with the fusion line at a point B, passes through the point B and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, and the position of the a2 is taken as the position of the notch center line of the Charpy impact sample.
And when the cross section of the Charpy impact sample is double-sided welding containing the root of the welding line, and the distance between the root of the welding line and the upper surface and the lower surface of the Charpy impact sample is close, determining a second method: the straight line b3 is parallel to the upper surface and the lower surface of the impact sample, is equal in distance from the upper surface and the lower surface, intersects with the fusion line at a point C, passes through the point C and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, the central line a3 of the notch of the Charpy impact sample is a straight line which is deviated to the direction of the parent material, the horizontal distance of the distance C3 is fmm, and the horizontal distance is perpendicular to the upper surface and the lower surface of the Charpy impact sample. When the charpy impact specimen is a V-notch, f is selected to be 0.83mm for the following reasons: the V-notch Charpy impact specimen has a width of 10mm, a notch angle of 45 DEG and a thickness below the notch of 8mm, and therefore the horizontal distance between the center line of the notch and the bottom of the notch is (10-8) tan (45 DEG/2) equal to 0.83 mm.
When the Charpy impact test sample blank is taken down from a test plate approved by a welding process, according to the standard requirements of the Material and welding Specifications, GB/T2650-2008 'welding joint impact test method', or ISO9016-2012 'metallic material welding destructive test-impact test', of China Classification, the Charpy impact test sample blank is taken down from the corresponding position of the test plate approved by the welding process, and the surface roughness of the Charpy impact test sample blank meets the standard requirements, so that the Charpy impact sample blank is drawn orderly, and a machining allowance is reserved for the size of the Charpy impact test sample processed.
When the positions of the central lines of the notches are determined on the weld centers and the heat affected zones of the Charpy impact test sample embryos respectively, the positions of the central lines of the notches of the Charpy impact test sample embryos are determined on the Charpy impact test sample embryos in the weld centers and the heat affected zones respectively according to the standard requirements of the Material and welding Specifications, GB/T2650-2008 'impact test method for welded joints or ISO 9016-2012' impact tests for metal material welding destructiveness.
After the position of the central line of the notch of the Charpy impact test sample is well positioned, cutting lines are respectively drawn at the positions 27.5mm on the two sides of the central line, the Charpy impact test sample blank is cut into new sample blanks with the size of 55 multiplied by 10.1 multiplied by 10.5mm along the cutting lines, the new sample blanks are sent to a grinding machine to be processed into Charpy impact test samples meeting the requirements of the standards of the Material and welding Specifications of the China Classification, GB/T2650-2008 impact test method for welding joints and ISO9016-2012 impact test for welding destructive test of metal materials, namely impact test, the V-shaped notch is drawn by an impact test sample notch broaching machine, and then the Charpy impact test is carried out.
By adopting the technical scheme of the invention, the following beneficial effects can be obtained:
the invention relates to a method for processing a Charpy impact test sample for a Charpy impact test, which aims to solve the problem that the processing position of a notch of the Charpy impact test sample is positioned at a weld line of a Charpy impact test approved by the existing welding process. The blank that the test welding process can accept impact absorption energy at the weld line of the Charpy impact test is filled, and the toughness index of the weakest part of the weld is obtained. The method has important significance for engineering application such as welding material performance test, welding process acceptance test, failure analysis and the like. The method for processing the Charpy impact test sample for the Charpy impact test can effectively solve the problem of positioning the notch processing position of the Charpy impact test sample of the material at the weld fusion line in the Charpy impact test approved by the existing welding process, ensure the reliable performance of the Charpy impact test and ensure the accurate and reliable test result.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic view of the centerline of a Charpy impact specimen notch;
FIG. 2 is a schematic view I of a Charpy impact test sample blank (the cross section is a single-side welding or a double-side welding with a cross section similar to the single-side welding after cutting);
FIG. 3 is a schematic view II of a Charpy impact test sample blank (the section is a double-sided weld including the root of a weld fusion line, and the distance between the root of the weld fusion line and the upper and lower surfaces of the Charpy impact test sample is close);
FIG. 4 is a schematic view of a Charpy impact test specimen blank (the cross section is a double-sided weld including a weld fusion line root, and the distance between the weld fusion line root and the upper surface and the lower surface of the Charpy impact test specimen is greatly different);
FIG. 5 is a schematic diagram showing a position sampling of a fusion line in a double-sided welding process in which a cross section is a single-sided welding or a cut cross section similar to the single-sided welding;
FIG. 6 is a schematic diagram of a first method of fusion line position sampling when the cross section is double-sided welding including the root of the weld fusion line and the distances between the root of the weld fusion line and the upper surface and the lower surface of the Charpy impact specimen are different greatly;
FIG. 7 is a schematic diagram of a second method of sampling the position of a weld line when the cross section of the weld line is double-sided welding including the root of the weld line and the root of the weld line is close to the upper and lower surfaces of a Charpy impact specimen;
in the drawings, the reference numbers are respectively: 1. charpy impact test specimens; 2. a sample notch; 3. the center line of the notch.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes and structures of the components, the mutual positions and connection relations among the components, the functions and operation principles of the components, will be made by referring to the accompanying drawings and the description of the embodiments:
as shown in fig. 1 to 7, the present invention is a charpy impact specimen processing method for a charpy impact test, and the processing steps of the charpy impact specimen processing method for the charpy impact test are as follows: 1) firstly, taking down a Charpy impact test sample blank from a test board approved by a welding process; 2) grinding and polishing one side surface of a welding line of the Charpy impact test sample blank, and then selecting a corrosive liquid to corrode according to the material quality of the Charpy impact test sample blank to form a corrosion surface; 3) determining the position of a central line of a notch on the center of a welding line and a heat affected zone of the Charpy impact test sample blank respectively; 4) the Charpy impact test sample blank comprises three different conditions that the section is single-side welded or double-side welded with a cut section similar to the single-side welded, the section is double-side welded containing the root of a weld line fusion line, the distance between the root of the weld line fusion line and the upper surface and the lower surface of the Charpy impact test sample is close, the section is double-side welded containing the root of the weld line fusion line, the distance between the root of the weld line fusion line and the upper surface and the distance between the root of the Charpy impact test sample and the lower surface of the Charpy impact test sample are greatly different, and the position of a notch central line of the; 5) after the central line position of the Charpy impact sample notch is well positioned, cutting lines are respectively drawn towards the two sides of the central line, the Charpy impact sample blank is cut into a new sample blank along the cutting lines, the new sample blank is sent to a grinding machine to be processed into a Charpy impact sample with the surface meeting the roughness requirement of the Charpy impact sample, a V-shaped notch meeting the requirement of the Charpy impact sample is drawn out by an impact sample notch broaching machine, and then the Charpy impact test is carried out on the Charpy impact sample; as shown in fig. 5, when the cross section of the charpy impact specimen is single-side welded or double-side welded with a cut cross section similar to the single-side welded, a straight line b1 is parallel to the upper surface and the lower surface of the impact specimen, is equidistant from the upper surface and the lower surface, intersects with the weld line at a point a, passes through the point a by a straight line a1, is perpendicular to the upper surface and the lower surface of the charpy impact specimen, and takes the position of a1 as the position of the notch center line of the charpy impact specimen. In order to solve the problem of positioning the notch processing position of a material Charpy impact sample at a weld joint line of a Charpy impact test approved by the existing welding process, the invention fills the gap of impact absorption energy at the weld joint line of the Charpy impact test approved by the test welding process, and obtains the toughness index of the weakest part of the weld joint. The invention has important significance for engineering application such as welding material performance test, welding process acceptance test, failure analysis and the like. The method for processing the Charpy impact test sample for the Charpy impact test has simple steps, can effectively solve the problem that the existing welding process recognizes the notch processing position positioning of the Charpy impact test sample of the material at the welding line in the Charpy impact test, ensures that the Charpy impact test is reliably carried out, and has accurate and reliable test results.
As shown in fig. 6, when the cross section of the charpy impact specimen is double-sided welding including the root of the weld line, and the distance between the root of the weld line and the upper surface and the lower surface of the charpy impact specimen is greatly different, the first determination method is as follows: the straight line B2 is parallel to the upper surface and the lower surface of the impact sample, is equal in distance from the upper surface and the lower surface, intersects with the fusion line at a point B, passes through the point B and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, and the position of the a2 is taken as the position of the notch center line of the Charpy impact sample.
As shown in fig. 7, when the cross section of the charpy impact specimen is double-sided welding including the root of the weld line, and the distance between the root of the weld line and the upper and lower surfaces of the charpy impact specimen is close, the second determination method comprises the following steps: the straight line b3 is parallel to the upper surface and the lower surface of the impact sample, is equal in distance from the upper surface and the lower surface, intersects with the fusion line at a point C, passes through the point C and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, the central line a3 of the notch of the Charpy impact sample is a straight line which is deviated to the direction of the parent material, the horizontal distance of the distance C3 is fmm, and the horizontal distance is perpendicular to the upper surface and the lower surface of the Charpy impact sample.
When the charpy impact specimen is a V-notch, f is selected to be 0.83mm for the following reasons: the V-notch Charpy impact specimen has a width of 10mm, a notch angle of 45 DEG and a thickness below the notch of 8mm, and therefore the horizontal distance between the center line of the notch and the bottom of the notch is (10-8) tan (45 DEG/2) equal to 0.83 mm.
When the Charpy impact test sample blank is taken down from a test plate approved by a welding process, according to the standard requirements of the Material and welding Specifications, GB/T2650-2008 'welding joint impact test method', or ISO9016-2012 'metallic material welding destructive test-impact test', of China Classification, the Charpy impact test sample blank is taken down from the corresponding position of the test plate approved by the welding process, and the surface roughness of the Charpy impact test sample blank meets the standard requirements, so that the Charpy impact sample blank is drawn orderly, and a machining allowance is reserved for the size of the Charpy impact test sample processed.
When the positions of the central lines of the notches are determined on the weld centers and the heat affected zones of the Charpy impact test sample embryos respectively, the positions of the central lines of the notches of the Charpy impact test sample embryos are determined on the Charpy impact test sample embryos in the weld centers and the heat affected zones respectively according to the standard requirements of the Material and welding Specifications, GB/T2650-2008 'impact test method for welded joints or ISO 9016-2012' impact tests for metal material welding destructiveness.
After the position of the central line of the Charpy impact sample notch is well positioned, cutting lines are respectively drawn at the positions 27.5mm on the two sides of the central line, the Charpy impact sample blank is cut into new sample blanks with the size of 55 multiplied by 10.1 multiplied by 10.5mm along the cutting lines, the new sample blanks are sent to a grinding machine to be processed into Charpy impact samples meeting the requirements of the standards of China Classification's material and welding Specifications, GB/T2650-2008 ' weld joint impact test method ' and ISO9016-2012 ' metal material weld destructive test-impact test ', a V-shaped notch meeting the requirement of the Charpy impact samples is drawn by an impact sample notch broaching machine, and then the Charpy impact test is carried out.
The invention relates to a method for processing a Charpy impact test sample for a Charpy impact test, which aims to solve the problem that the processing position of a notch of the Charpy impact test sample is positioned at a weld line of a Charpy impact test approved by the existing welding process. The blank that the test welding process can accept impact absorption energy at the weld line of the Charpy impact test is filled, and the toughness index of the weakest part of the weld is obtained. The method has important significance for engineering application such as welding material performance test, welding process acceptance test, failure analysis and the like. The method for processing the Charpy impact test sample for the Charpy impact test can effectively solve the problem of positioning the notch processing position of the Charpy impact test sample of the material at the weld fusion line in the Charpy impact test approved by the existing welding process, ensure the reliable performance of the Charpy impact test and ensure the accurate and reliable test result.
The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, changes and equivalents of the embodiments of the invention, and its application to other applications without departing from the spirit and scope of the invention.
Claims (7)
1. A Charpy impact sample processing method for a Charpy impact test is characterized by comprising the following steps of: the processing method of the Charpy impact specimen for the Charpy impact test comprises the following processing steps: 1) firstly, taking down a Charpy impact test sample blank from a test board approved by a welding process; 2) grinding and polishing one side surface of a welding line of the Charpy impact test sample blank, and then selecting a corrosive liquid to corrode according to the material quality of the Charpy impact test sample blank to form a corrosion surface; 3) determining the position of a central line of a notch on the center of a welding line and a heat affected zone of the Charpy impact test sample blank respectively; 4) the Charpy impact test sample blank comprises three different conditions that the section is single-side welded or double-side welded with a cut section similar to the single-side welded, the section is double-side welded containing the root of a weld line fusion line, the distance between the root of the weld line fusion line and the upper surface and the lower surface of the Charpy impact test sample is close, the section is double-side welded containing the root of the weld line fusion line, the distance between the root of the weld line fusion line and the upper surface and the distance between the root of the Charpy impact test sample and the lower surface of the Charpy impact test sample are greatly different, and the position of a notch central line of the; 5) after the position of the central line of the Charpy impact sample notch is well positioned, cutting lines are respectively drawn at the two sides of the central line, the Charpy impact sample blank is cut into a new sample blank along the cutting lines, the new sample blank is sent to a grinding machine to be processed into a Charpy impact sample with a surface having roughness, a V-shaped notch is drawn out by using an impact sample notch broaching machine, and then a Charpy impact test is carried out on the Charpy impact sample; when the section of the Charpy impact sample is single-side welded or double-side welded with a cut section similar to the single-side welded, the straight line b1 is parallel to the upper surface and the lower surface of the impact sample, has equal distance from the upper surface and the lower surface, is intersected with the fusion line at the point A, the straight line a1 passes through the point A and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, and the position of the a1 is taken as the position of the notch center line of the Charpy impact sample.
2. The charpy impact specimen processing method for a charpy impact test according to claim 1, characterized in that: when the cross section of the Charpy impact specimen is double-sided welding containing the root of a welding line, and the distance between the root of the welding line and the upper surface and the lower surface of the Charpy impact specimen has a large difference, the first determination method comprises the following steps: the straight line B2 is parallel to the upper surface and the lower surface of the impact sample, is equal in distance from the upper surface and the lower surface, intersects with the fusion line at a point B, passes through the point B and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, and the position of the a2 is taken as the position of the notch center line of the Charpy impact sample.
3. The charpy impact specimen processing method for a charpy impact test according to claim 1, characterized in that: and when the cross section of the Charpy impact sample is double-sided welding containing the root of the welding line, and the distance between the root of the welding line and the upper surface and the lower surface of the Charpy impact sample is close, determining a second method: the straight line b3 is parallel to the upper surface and the lower surface of the impact sample, is equal in distance from the upper surface and the lower surface, intersects with the fusion line at a point C, passes through the point C and is perpendicular to the upper surface and the lower surface of the Charpy impact sample, the central line a3 of the notch of the Charpy impact sample is a straight line which is deviated to the direction of the parent material, the horizontal distance of the distance C3 is fmm, and the horizontal distance is perpendicular to the upper surface and the lower surface of the Charpy impact sample.
4. The charpy impact specimen processing method for a charpy impact test according to claim 3, characterized in that: when the charpy impact specimen is a V-notch, f is selected to be 0.83mm for the following reasons: the V-notch Charpy impact specimen has a width of 10mm, a notch angle of 45 DEG and a thickness below the notch of 8mm, and therefore the horizontal distance between the center line of the notch and the bottom of the notch is (10-8) tan (45 DEG/2) equal to 0.83 mm.
5. The charpy impact specimen processing method for a charpy impact test according to claim 1, 2, or 3, characterized in that: when the Charpy impact test sample blank is taken down from a test plate approved by a welding process, according to the standard requirements of the Material and welding Specifications, GB/T2650-2008 'welding joint impact test method', or ISO9016-2012 'metallic material welding destructive test-impact test', of China Classification, the Charpy impact test sample blank is taken down from the corresponding position of the test plate approved by the welding process, and the surface roughness of the Charpy impact test sample blank meets the standard requirements, so that the Charpy impact sample blank is drawn orderly, and a machining allowance is reserved for the size of the Charpy impact test sample processed.
6. The charpy impact specimen processing method for a charpy impact test according to claim 1, 2, or 3, characterized in that: when the positions of the central lines of the notches are determined on the weld centers and the heat affected zones of the Charpy impact test sample embryos respectively, the positions of the central lines of the notches of the Charpy impact test sample embryos are determined on the Charpy impact test sample embryos in the weld centers and the heat affected zones respectively according to the standard requirements of the Material and welding Specifications, GB/T2650-2008 'impact test method for welded joints or ISO 9016-2012' impact tests for metal material welding destructiveness.
7. The charpy impact specimen processing method for a charpy impact test according to claim 1, 2, or 3, characterized in that: after the position of the central line of the notch of the Charpy impact test sample is well positioned, cutting lines are respectively drawn at the positions 27.5mm on the two sides of the central line, the Charpy impact test sample blank is cut into new sample blanks with the size of 55 multiplied by 10.1 multiplied by 10.5mm along the cutting lines, the new sample blanks are sent to a grinding machine to be processed into Charpy impact test samples meeting the requirements of the standards of the Material and welding Specifications of the China Classification, GB/T2650-2008 impact test method for welding joints and ISO9016-2012 impact test for welding destructive test of metal materials, namely impact test, the V-shaped notch is drawn by an impact test sample notch broaching machine, and then the Charpy impact test is carried out.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592569A (en) * | 2009-06-23 | 2009-12-02 | 武汉钢铁(集团)公司 | A kind of job operation of standard impact test sample with Charpy V-notch |
| KR20120033003A (en) * | 2010-09-29 | 2012-04-06 | 현대제철 주식회사 | Marking apparatus of welding part notch on a specimen |
| CN103196715A (en) * | 2013-03-06 | 2013-07-10 | 中国石油天然气集团公司 | Processing method of Charpy impact samples |
| CN106513925A (en) * | 2016-11-30 | 2017-03-22 | 东北大学 | Method for screening reasonable welding process parameters based on impact toughness |
| CN208847558U (en) * | 2018-08-15 | 2019-05-10 | 招商局重工（江苏）有限公司 | The device positioned for welding point impact specimen fixed length and notch |
-
2021
- 2021-02-09 CN CN202110176602.2A patent/CN112985939A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592569A (en) * | 2009-06-23 | 2009-12-02 | 武汉钢铁(集团)公司 | A kind of job operation of standard impact test sample with Charpy V-notch |
| KR20120033003A (en) * | 2010-09-29 | 2012-04-06 | 현대제철 주식회사 | Marking apparatus of welding part notch on a specimen |
| CN103196715A (en) * | 2013-03-06 | 2013-07-10 | 中国石油天然气集团公司 | Processing method of Charpy impact samples |
| CN106513925A (en) * | 2016-11-30 | 2017-03-22 | 东北大学 | Method for screening reasonable welding process parameters based on impact toughness |
| CN208847558U (en) * | 2018-08-15 | 2019-05-10 | 招商局重工（江苏）有限公司 | The device positioned for welding point impact specimen fixed length and notch |
Non-Patent Citations (6)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局等: "《中华人民共和国国家标准 GB/T 229-2007》", 23 November 2007 * |
| 中华人民共和国国家质量监督检验检疫总局等: "《中华人民共和国国家标准 GB/T 2650-2008》", 31 March 2008 * |
| 何小东等: "高强度管线钢焊接接头不同缺口位置的断裂韧性研究", 《焊管》 * |
| 国家市场监督管理总局等: "《中华人民共和国国家标准 GB/T 2975-2018》", 14 May 2018 * |
| 秦斌等: "马氏体不锈钢与低合金钢异质焊接接头的组织与力学性能", 《金属热处理》 * |
| 陈志刚等: "《压力容器焊接工艺和焊接缺陷处理案例》", 30 April 2018 * |
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