CN110788224A - Quality detection method for imprinting connection point - Google Patents
Quality detection method for imprinting connection point Download PDFInfo
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- CN110788224A CN110788224A CN201910983430.2A CN201910983430A CN110788224A CN 110788224 A CN110788224 A CN 110788224A CN 201910983430 A CN201910983430 A CN 201910983430A CN 110788224 A CN110788224 A CN 110788224A
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000004364 calculation method Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 239000007822 coupling agent Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000011160 research Methods 0.000 abstract 1
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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Abstract
The invention relates to a quality detection method of an embossed connection point, belonging to the technical field of nondestructive detection of a cold-formed structural member made of a metal sheet material. According to the invention, reflected wave data of different surfaces of the imprinting connection point are obtained by using an ultrasonic microscope, the time of reflected waves of different surfaces of the imprinting connection point is obtained by analyzing an A scanning signal, and geometric characteristic parameters of the bottom thickness of the center area of the connection point, the depth of concave of the center area of the connection point, the height of the center area of the connection point, the thickness of an upper plate and the thickness of a lower plate in the bottom thickness of the center area of the connection point, which influence the connection strength of the imprinting connection point, are obtained by calculation on the basis. The invention can measure and calculate a plurality of quality parameters of the imprinting connection test piece, thereby realizing the comprehensive evaluation of the quality level of the imprinting connection test piece joint, simultaneously realizing the nondestructive detection of the imprinting connection point, having no damage to the molding mosaic structure in the joint and providing scientific basis for the related research, design, process manufacturing and the like of the imprinting connection.
Description
Technical Field
The invention relates to a quality detection method of an embossed connection point, belonging to the technical field of nondestructive detection of a cold-formed structural member made of a metal sheet material.
Background
The impression connection is a new mechanical cold forming method, under the action of impression mould and punch, the connected thin plate material is cold-extruded and deformed in the forming process, and a connection point inlaid with each other is formed on the premise of not destroying the original characteristics of the material. The stamping connection technology has the characteristics of simple process, low energy consumption, high dynamic fatigue strength, wide range of connectable materials and the like, is primarily applied to the automobile manufacturing industry and permeates into the household appliance industry, for example, the stamping connection technology is used in parts such as automobile roof frameworks, automobile bumpers, automobile door inner plates, trunk cover plates and the like, and a certain number of stamping connection points are arranged in seats and washing machines.
The main parameters affecting the static and dynamic fatigue strength of the embossed joint include: the thickness of the bottom of the central area of the connecting point, the depth of the concave of the central area of the connecting point, the height of the table of the central area of the connecting point, the thickness of the upper plate and the thickness of the lower plate in the thickness of the bottom of the central area of the connecting point and other geometric characteristic parameters, wherein the thickness of the upper plate and the thickness of the lower plate in the thickness of the bottom of the central area of the connecting point are closely related to the sealing and corrosion resistance of the. At present, the main parameter evaluation of the quality of the imprinting connection point is to obtain a cross section by cutting an imprinting connection test piece in a traditional destructive manner, and visually measure and detect the cross section, or directly measure the bottom thickness of an imprinting connector by adopting a caliper gauge. Therefore, it is urgently needed to provide a method for rapidly and accurately detecting the quality of the pressed joint without damaging the internal structure of the joint.
Disclosure of Invention
The invention aims to provide a quality detection method of an imprinting connection point, which is used for solving the problems of large error, low precision and damage to an embedded structure formed in a joint in the traditional method for measuring the quality parameter of the imprinting point.
The technical scheme of the invention is as follows: the method for detecting the quality of the imprinting connection point comprises the steps of acquiring reflection wave data of different surfaces of the imprinting connection point by using an ultrasonic microscope, acquiring the time of reflection waves of different surfaces of the imprinting connection point by analyzing an A scanning signal, and acquiring geometric characteristic parameters of the bottom thickness of a connection point central area, the concave depth of the connection point central area, the height of a connection point central area, the thickness of an upper plate and the thickness of a lower plate in the bottom thickness of the connection point central area, which influence the connection strength of the imprinting connection point, by calculation on the basis.
The method comprises the following specific steps:
step one, measuring the bottom thickness X of the central area of the imprinting connection point:
step A: adding a couplant special for ultrasonic detection into a water tank, wherein the depth of the couplant in the water tank is ensured to be between the lowest water level and the highest water level, placing an imprinting connection test piece for the forward direction when the upper surface of an upper plate in the central area of an imprinting connection point is opposite to the forward direction of an ultrasonic probe, placing the imprinting connection test piece on a gasket in the water tank in the forward direction, and ensuring that the bottom of the imprinting connection test piece connection point is positioned between the two gaskets;
and B: moving the ultrasonic probe up and down to immerse the ultrasonic probe in the coupling agent;
and C: moving an ultrasonic probe to a position right above a to-be-detected base material area, transmitting ultrasonic waves by using the ultrasonic probe to obtain an A-scanning signal, and measuring t as the time for impressing and connecting reflected waves on the upper surface of an upper plate of the base material area of the test piece1Moving the ultrasonic probe to the position right above the central area of the imprinting connecting point, and measuring the time t of the reflected wave on the upper surface of the upper plate in the central area of the imprinting connecting point2；
Step D: placing an impression connection test piece for a reverse direction when the lower surface of a lower plate in the central area of an impression connection point is opposite to the forward direction of an ultrasonic probe, placing the impression connection test piece on two gaskets in the reverse direction, ensuring that the upper surface of an upper plate in a parent material area of the impression connection test piece is contacted with the upper surfaces of the gaskets, transmitting ultrasonic waves by using the ultrasonic probe to obtain an A scanning signal, moving the ultrasonic probe to a position right above the central area of the impression connection point, and measuring the time of reflected waves of the lower surface of the lower plate in the central area of the3Moving the ultrasonic probe to the position right above the gasket, and measuring the time t of the reflected wave on the upper surface of the gasket4By measuring the resulting ultrasonic reflections in step C and step DWave time, and propagation velocity V of ultrasonic wave in coupling agentcCalculating the bottom thickness X of the central area of the imprinting connection point;
the formula for calculating the bottom thickness X of the central area of the embossed connection point is as follows:
step two, measuring the concave depth H of the central area of the imprinting connection point:
performing the substep A, the substep B and the substep C of the first step, and measuring the obtained ultrasonic reflection wave time and the propagation speed V of the ultrasonic wave in the couplant through the substep A, the substep B and the substep C of the first stepcCalculating the concave depth H of the central area of the imprinting connection point;
the calculation formula of the concave depth H of the central area of the embossed connection point is as follows:
step three, measuring the height h of the central area of the imprinting connection point:
the height of the embossed connecting point central area platform is the height from the surface of the edge side of the lower plate in the connecting point central area to the lower surface of the lower plate in the connecting point central area, adding a coupling agent into a water tank, ensuring the depth of the coupling agent in the water tank to be between the lowest water level and the highest water level, placing an imprinting connection test piece for the backward direction when the lower surface of a lower plate in the central area of an imprinting connection point is opposite to the forward direction of an ultrasonic probe, placing the imprinting connection test piece on two gaskets in the backward direction, ensuring the upper surface of an upper plate in a parent material area of the imprinting connection test piece to be in contact with the upper surfaces of the gaskets, executing a substep B of the step I, transmitting ultrasonic waves by using the ultrasonic probe to obtain an A scanning signal, moving the ultrasonic probe up and down to focus, ensuring the focus of the ultrasonic probe to be focused on the lower surface of the lower plate of the imprinting connection test piece, moving the ultrasonic probe to be right above the central area.3Moving the probe to the embossing stationThe time of the reflected wave on the surface of the bump is measured to be t5Calculating the height h of the central area of the imprinting connection point by measuring the obtained ultrasonic reflection wave time and the propagation speed Vc of the ultrasonic wave in the couplant;
the calculation formula of the mesa height h of the central area of the imprinting connection point is as follows:
step four, measuring the thickness T of the upper plate in the thickness X of the bottom of the central area of the impressing connection point1Lower plate thickness T2：
All the substeps in the step one are executed, an A scanning signal when the probe is positioned right above the center area of the imprinting connection point in the substep C is obtained, and the reflected wave time t of the upper plate upper surface of the center area of the imprinting connection point in the A scanning signal is respectively extracted2And the time t of the reflected wave on the lower surface of the upper plate6Obtaining A scanning signals when the probe is positioned right above the center area of the imprinting connection point in the substep D, and respectively extracting the time t of reflected waves of the lower plate lower surface in the center area of the imprinting connection point in the A scanning signals3And the time t of the reflected wave from the upper surface of the lower plate7Measuring the time of the reflected wave obtained in the substep C and the substep D, and the propagation velocity V of the ultrasonic wave in the metal materialmCalculating the thickness T of the upper plate in the thickness X of the bottom of the central area of the impressing connecting point1Lower plate thickness T2；
Upper plate thickness T1The calculation formula is as follows:
thickness T of the lower plate2The calculation formula is as follows:
the invention has the beneficial effects that:
1. the nondestructive detection of the imprinting connection point can be realized, and the embedded structure formed in the joint is not damaged;
2. the method can measure a plurality of parameters such as the thickness of the bottom of the central area of the impressing connecting point, the concave depth of the central area of the connecting point, the thickness of an upper plate and the thickness of a lower plate in the thickness of the bottom of the central area of the connecting point, the height of the central area of the connecting point and the like, and realize the comprehensive evaluation of the quality of the connecting point;
3. compared with the traditional method for visually detecting the quality parameters of the section of the sectioning section or directly measuring by adopting a caliper, the method disclosed by the invention is simple, high in measuring speed and high in precision, and is easy to realize automation.
Drawings
FIG. 1 is a schematic diagram of a system configuration of the quality detection method of the embossed connection point, wherein in FIG. 1: 1. a gasket; 2. impressing a connection test piece; 3. a coupling agent; 4. an ultrasonic probe; 5. an ultrasonic control system; 6. a computer; 7. a motion control system; 8. a three-axis linkage mechanism; 9. a water tank;
fig. 2 is a schematic diagram of a test piece forward placement detection state of the quality detection method of the embossed connection point of the present invention, and in fig. 2: 1. a gasket; 10. detecting points in a base material area; 11. detecting points on the upper surface of the upper plate in the central area of the connecting point; 12. a lower surface detection point of the lower plate in the central area of the connection point; 15. an upper plate; 16. a lower plate;
fig. 3 is a schematic diagram of a test piece upside down placement detection state of the quality detection method of the embossed connection point of the invention, and in fig. 3: 1. a gasket; 13. detecting points on the upper surface of the gasket; 14. detecting points of the edge side bulges of the lower plate; 15. an upper plate; 16 a lower plate;
FIG. 4 is a schematic diagram of the marking of quality parameters of the embossed joint according to the present invention;
FIG. 5 is an ultrasonic A-scan of the parent metal zone detection points when the imprinting connection test piece is placed in the forward direction;
FIG. 6 is an ultrasonic A scan of the detection points in the center area of the connection point when the imprinting connection specimen is placed in the forward direction according to the present invention;
FIG. 7 is an ultrasonic A scan of the detection points in the center area of the connection point when the imprinting connection test piece is placed upside down according to the present invention;
FIG. 8 is an ultrasonic A scan of a pad detection point of the present invention;
FIG. 9 is an ultrasonic A scan of the lower plate edge bump detection points in the center area of the embossed connection points of the present invention.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Example 1: a quality detection method for an embossed connection point specifically comprises the following steps:
step one, measuring the bottom thickness X of the central area of the imprinting connection point:
further, the first step can be divided into the following sub-steps:
step A: as shown in fig. 1, deionized water for ultrasonic detection is added into a water tank 9 as a coupling agent 3, and the depth of the deionized water is ensured to be between the lowest water level and the highest water level; the tested imprinting connection test piece 2 is of a single-lap structure made of the same aluminum alloy, the size of the connected plate is 110mm multiplied by 20mm multiplied by 1.5mm, and the imprinting connection test piece 2 is placed in the positive direction when the upper surface of the upper plate 15 in the central area of the imprinting connection point is opposite to the positive direction of the ultrasonic probe 4; placing the detected aluminum alloy imprinting connection test piece 2 on the gasket 1 in the water tank 9 in the forward direction and ensuring that the bottom of a connection point of the imprinting connection test piece 2 is positioned between the two gaskets 1;
and B: the ultrasonic probe 4 is moved up and down and is immersed in a little deionized water;
and C: moving the ultrasonic probe 4 to the position right above the base material area detection point 10, transmitting ultrasonic waves by using the ultrasonic probe 4 to obtain an A-scanning signal, displaying the A-scanning signal in the computer 6, and obtaining the time t of the reflected wave on the upper surface of the upper plate 15 of the base material area detection point 10 of the imprinting connection test piece 21(ii) a Moving the ultrasonic probe 4 to be right above the upper plate upper surface detection point 11 in the central area of the imprinting connection point to obtain the reflected wave of the upper plate upper surface detection point 11 in the central area of the imprinting connection point, wherein the time t is t2；
Step D: the lower surface of the lower plate 16 in the central area of the imprinting connection point is placed in a reverse direction with the imprinting connection test piece 2 when the ultrasonic probe 4 is opposite to the positive direction; as shown in FIG. 3, the imprinting connection specimen 2 is placed on the two pads 1 in the reverse direction and the base material region of the imprinting connection specimen 2 is ensuredThe upper surface of the upper plate 15 is contacted with the upper surface of the gasket 1, the ultrasonic probe 4 is utilized to emit ultrasonic waves, an A-scanning signal is obtained and displayed in the computer 6, the ultrasonic probe 4 is moved to be right above the lower plate lower surface detection point 12 in the center area of the stamping connection point, and the time t of the reflected wave of the lower plate lower surface detection point 12 in the center area of the stamping connection point is obtained3(ii) a Moving the ultrasonic probe 4 to the position right above the detection point 13 of the upper surface of the gasket to obtain the time t of the reflected wave of the detection point 13 of the upper surface of the gasket4(ii) a And D, calculating the thickness X of the bottom of the central area of the imprinting connection point according to the ultrasonic reflection wave time measured in the step C and the ultrasonic wave propagation speed Vc in the deionized water, wherein the calculation formula is as follows:
step two, measuring the concave depth H of the central area of the imprinting connection point:
performing the substep A, the substep B and the substep C of the first step, and measuring the obtained ultrasonic reflection wave time and the propagation speed V of the ultrasonic wave in the deionized water through the substep A, the substep B and the substep C of the first stepcAnd calculating the concave depth H of the central area of the imprinting connection point, wherein the calculation formula is as follows:
step three, measuring the height h of the central area of the imprinting connection point:
the height of the central area table of the impressing connecting point is the height from the edge side of the lower plate of the connecting point area to the lower surface of the lower plate of the connecting point central area; adding deionized water into the water tank 9, wherein the depth of the deionized water in the water tank is ensured to be between the lowest water level and the highest water level; placing the imprinting connection test piece 2 on the two gaskets 1 in the reverse direction, ensuring that the upper surface of an upper plate 15 in a parent metal area of the imprinting connection test piece 2 is in contact with the upper surface of the gasket 1, executing a substep B of the step I, transmitting ultrasonic waves by using an ultrasonic probe 4, obtaining an A scanning signal and displaying the A scanning signal in a computer 6, and moving the ultrasonic probe up and downFocusing the probe 4 to ensure that the focus of the ultrasonic probe 4 is focused on the lower surface of the lower plate 16 of the imprinting connection test piece 2, moving the ultrasonic probe 4 to be right above a detection point 12 on the lower surface of the lower plate in the center area of the imprinting connection point by utilizing ultrasonic C-scan imaging positioning, and obtaining the reflected wave of the detection point 12 on the lower surface of the lower plate in the center area of the imprinting connection point with the time t3(ii) a Moving the probe to be right above a lower plate edge side bulge detection point 14 in the center area of the imprinting connection point to obtain a reflected wave time t of the lower plate edge side bulge detection point 14 in the center area of the imprinting connection point5The ultrasonic reflection wave time obtained by measurement and the propagation speed V of the ultrasonic wave in the deionized watercAnd calculating the height h of the central area of the imprinting connection point by the following calculation formula:
step four, impressing the upper plate thickness T in the bottom thickness X of the central area of the connecting point1Lower plate thickness T2The measurement of (2):
all the substeps in the step one are executed, A-scan signals when the ultrasonic probe 4 is positioned right above the upper plate upper surface detection point 11 in the center area of the imprinting connection point in the substep C are obtained, and the upper surface reflection wave time t of the upper plate 15 in the center area of the imprinting connection point in the A-scan signals is respectively extracted2And a reflected wave time t of the lower surface of the upper plate 156(ii) a Obtaining an A-scan signal when the ultrasonic probe 4 is positioned right above the detection point 12 on the lower surface of the lower plate in the center area of the imprinting connection point in the substep D, and respectively extracting the time t of the reflected wave on the lower surface of the lower plate 16 in the center area of the imprinting connection point in the A-scan signal3And the surface reflection time t of the lower plate 167(ii) a The obtained reflection wave time and the propagation speed V of the ultrasonic wave in the aluminum alloy material are measured in the substep C and the substep DmCalculating the thickness T of the upper plate in the thickness X of the bottom of the central area of the impressing connecting point1Lower plate thickness T2The calculation formula is as follows:
in example 1, the propagation velocity V of ultrasonic waves in deionized waterc1.48 mm/. mu.s; the propagation velocity of the ultrasonic wave in the aluminum alloy material is Vm＝6.138mm/μs；
The quality parameters of the aluminum alloy stamped connection test piece are measured by a traditional detection method as a reference, and the results of example 1 and reference measurement are as follows:
the resulting calculations are compared to relevant industry standards to assess the quality of the embossed joint.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit and scope of the present invention.
Claims (2)
1. A quality detection method of an embossed connection point is characterized in that: the method comprises the steps of acquiring reflected wave data of different surfaces of an imprinting connection point by using an ultrasonic microscope, acquiring time of reflected waves of different surfaces of the imprinting connection point by analyzing an A scanning signal, and acquiring geometric characteristic parameters of the bottom thickness of a connection point central area, the concave depth of the connection point central area, the height of a connection point central area, and the thickness of an upper plate and the thickness of a lower plate in the bottom thickness of the connection point central area, which influence the connection strength of the imprinting connection point, by calculating on the basis.
2. The method for detecting the quality of the embossed connection point according to claim 1, which is characterized by comprising the following specific steps:
step one, measuring the bottom thickness X of the central area of the imprinting connection point:
step A: adding a couplant special for ultrasonic detection into a water tank, wherein the depth of the couplant in the water tank is ensured to be between the lowest water level and the highest water level, placing an imprinting connection test piece for the forward direction when the upper surface of an upper plate in the central area of an imprinting connection point is opposite to the forward direction of an ultrasonic probe, placing the imprinting connection test piece on a gasket in the water tank in the forward direction, and ensuring that the bottom of the imprinting connection test piece connection point is positioned between the two gaskets;
and B: moving the ultrasonic probe up and down to immerse the ultrasonic probe in the coupling agent;
and C: moving an ultrasonic probe to a position right above a to-be-detected base material area, transmitting ultrasonic waves by using the ultrasonic probe to obtain an A-scanning signal, and measuring t as the time for impressing and connecting reflected waves on the upper surface of an upper plate of the base material area of the test piece1Moving the ultrasonic probe to the position right above the central area of the imprinting connecting point, and measuring the time t of the reflected wave on the upper surface of the upper plate in the central area of the imprinting connecting point2；
Step D: placing an impression connection test piece for a reverse direction when the lower surface of a lower plate in the central area of an impression connection point is opposite to the forward direction of an ultrasonic probe, placing the impression connection test piece on two gaskets in the reverse direction, ensuring that the upper surface of an upper plate in a parent material area of the impression connection test piece is contacted with the upper surfaces of the gaskets, transmitting ultrasonic waves by using the ultrasonic probe to obtain an A scanning signal, moving the ultrasonic probe to a position right above the central area of the impression connection point, and measuring the time of reflected waves of the lower surface of the lower plate in the central area of the3Moving the ultrasonic probe to the position right above the gasket, and measuring the time t of the reflected wave on the upper surface of the gasket4The ultrasonic reflection wave time obtained by the measurement in the step C and the step D and the propagation speed V of the ultrasonic wave in the couplantcCalculating the bottom thickness X of the central area of the imprinting connection point;
the formula for calculating the bottom thickness X of the central area of the embossed connection point is as follows:
step two, measuring the concave depth H of the central area of the imprinting connection point:
performing substeps A, B and C of said first step, byMeasuring the time of ultrasonic reflection wave obtained in the substep A, the substep B and the substep C of the step one, and the propagation speed V of the ultrasonic wave in the couplantcCalculating the concave depth H of the central area of the imprinting connection point;
the calculation formula of the concave depth H of the central area of the embossed connection point is as follows:
step three, measuring the height h of the central area of the imprinting connection point:
the height of the embossed connecting point central area platform is the height from the surface of the edge side of the lower plate in the connecting point central area to the lower surface of the lower plate in the connecting point central area, adding a coupling agent into a water tank, ensuring the depth of the coupling agent in the water tank to be between the lowest water level and the highest water level, placing an imprinting connection test piece for the backward direction when the lower surface of a lower plate in the central area of an imprinting connection point is opposite to the forward direction of an ultrasonic probe, placing the imprinting connection test piece on two gaskets in the backward direction, ensuring the upper surface of an upper plate in a parent material area of the imprinting connection test piece to be in contact with the upper surfaces of the gaskets, executing a substep B of the step I, transmitting ultrasonic waves by using the ultrasonic probe to obtain an A scanning signal, moving the ultrasonic probe up and down to focus, ensuring the focus of the ultrasonic probe to be focused on the lower surface of the lower plate of the imprinting connection test piece, moving the ultrasonic probe to be right above the central area.3Moving the probe to a position right above a bulge on the edge side of a lower plate in the central area of the imprinting connection point, and measuring the time t of a reflected wave on the surface of the bulge5Calculating the height h of the central area of the imprinting connection point by measuring the obtained ultrasonic reflection wave time and the propagation speed Vc of the ultrasonic wave in the couplant;
the calculation formula of the mesa height h of the central area of the imprinting connection point is as follows:
step four, measuring the imprinting connection pointUpper plate thickness T in core region bottom thickness X1Lower plate thickness T2：
All the substeps in the step one are executed, an A scanning signal when the probe is positioned right above the center area of the imprinting connection point in the substep C is obtained, and the reflected wave time t of the upper plate upper surface of the center area of the imprinting connection point in the A scanning signal is respectively extracted2And the time t of the reflected wave on the lower surface of the upper plate6Obtaining A scanning signals when the probe is positioned right above the center area of the imprinting connection point in the substep D, and respectively extracting the time t of reflected waves of the lower plate lower surface in the center area of the imprinting connection point in the A scanning signals3And the time t of the reflected wave from the upper surface of the lower plate7Measuring the time of the reflected wave obtained in the substep C and the substep D, and the propagation velocity V of the ultrasonic wave in the metal materialmCalculating the thickness T of the upper plate in the thickness X of the bottom of the central area of the impressing connecting point1Lower plate thickness T2；
Upper plate thickness T1The calculation formula is as follows:
thickness T of the lower plate2The calculation formula is as follows:
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050210953A1 (en) * | 2002-05-17 | 2005-09-29 | Paul Buschke | Method for determining temporal and amplitude threshold values of gates during ultrasound testing of spot welding joints |
| US20090133470A1 (en) * | 2007-11-28 | 2009-05-28 | Whalen Christopher D | Dry Side Sensor Mounting for Sensor Chip Assembly |
| CN103317076A (en) * | 2012-03-23 | 2013-09-25 | 空中客车营运有限公司 | Method for evaluating the installation of blind rivets, method and system for installing blind rivets, method and system for obtaining a pattern, and aircraft |
| CN106596719A (en) * | 2016-12-02 | 2017-04-26 | 国网北京市电力公司 | Method, device and system for detecting pressure welding quality |
| CN106862463A (en) * | 2015-12-10 | 2017-06-20 | 罗伯特·博世有限公司 | Riveting device and the sleeving and riveting method of stamping riveting is carried out using the vibration for aiding in punching power |
| RU2701204C1 (en) * | 2018-12-29 | 2019-09-25 | Акционерное общество "Обнинское научно-производственное предприятие "Технология" им. А.Г. Ромашина" | Method for non-destructive testing of a monolithic sheet together with an adhesive layer in multilayer structures from polymer composite materials |
-
2019
- 2019-10-16 CN CN201910983430.2A patent/CN110788224B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050210953A1 (en) * | 2002-05-17 | 2005-09-29 | Paul Buschke | Method for determining temporal and amplitude threshold values of gates during ultrasound testing of spot welding joints |
| US20090133470A1 (en) * | 2007-11-28 | 2009-05-28 | Whalen Christopher D | Dry Side Sensor Mounting for Sensor Chip Assembly |
| CN103317076A (en) * | 2012-03-23 | 2013-09-25 | 空中客车营运有限公司 | Method for evaluating the installation of blind rivets, method and system for installing blind rivets, method and system for obtaining a pattern, and aircraft |
| CN106862463A (en) * | 2015-12-10 | 2017-06-20 | 罗伯特·博世有限公司 | Riveting device and the sleeving and riveting method of stamping riveting is carried out using the vibration for aiding in punching power |
| CN106596719A (en) * | 2016-12-02 | 2017-04-26 | 国网北京市电力公司 | Method, device and system for detecting pressure welding quality |
| RU2701204C1 (en) * | 2018-12-29 | 2019-09-25 | Акционерное общество "Обнинское научно-производственное предприятие "Технология" им. А.Г. Ромашина" | Method for non-destructive testing of a monolithic sheet together with an adhesive layer in multilayer structures from polymer composite materials |
Non-Patent Citations (3)
| Title |
|---|
| 初明明: "镀锌钢-1420铝锂合金电阻点焊及压印接头连接强度对比", 《热加工工艺》 * |
| 肖智杰: ""DP590高强钢双脉冲胶接点焊连接工艺及接头力学性能研究"", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
| 赵得锁等: "1420铝锂合金电阻点焊与压印连接力学性能对比", 《热加工工艺》 * |
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