CN107478720A - A kind of device and method for detecting point quality in real time using ultrasonic penetration signal - Google Patents
A kind of device and method for detecting point quality in real time using ultrasonic penetration signal Download PDFInfo
- Publication number
- CN107478720A CN107478720A CN201610407362.1A CN201610407362A CN107478720A CN 107478720 A CN107478720 A CN 107478720A CN 201610407362 A CN201610407362 A CN 201610407362A CN 107478720 A CN107478720 A CN 107478720A
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- spot
- electrode
- probe
- real time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0237—Thin materials, e.g. paper, membranes, thin films
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
- G01N2291/2672—Spot welding
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention relates to a kind of device and method for detecting point quality in real time using ultrasonic penetration signal, its device includes ultrasonic probe and the ultrasound measuring instrument and computer that are connected with ultrasonic probe, also include mash welder and spot-wedling electrode, the spot-wedling electrode is provided with the cooling water hole connected with the cavity, the ultrasonic probe includes transmitting probe and receiving transducer, the spot-wedling electrode includes Top electrode and bottom electrode, the transmitting probe is embedded in inside Top electrode, and the receiving transducer is embedded in inside bottom electrode；Its method comprises the following steps：S1, start mash welder, ultrasound measuring instrument and computer；S2, in resistance spot welding process is carried out to sheet material, transmitting probe launches a series of ultrasonic scanning pulses, and the transmission ultrasonic signal received by receiving transducer is converted to ultrasonic transmission wave shape figure by ultrasound measuring instrument.The present invention is directly perceived in pinpoint welding procedure, it is accurate, efficiently complete quality of welding spot comprehensive analysis, it is possible to achieve the online automatic detection of thin plate point quality overall process.
Description
Technical field
The present invention relates to field of non destructive testing, and the real-time test point of ultrasonic penetration signal is utilized more specifically to one kind
Weld the device and method of quality.
Background technology
Spot welding is to connect a kind of simple and easy to do, cost-effective method of sheet metal, suitable for high-speed automated production.
The workmanship of vehicle body directly affects the service life of vehicle complete vehicle, and resistance spot welding is the main Welder of current Auto-body manufacturing
Skill, therefore the non-destructive testing technology of quality of welding spot is to ensureing that autobody welding and assembling quality is significant.It is fast with auto industry
Hail exhibition, requirement to resistance spot welding quality improves constantly, while the precision to point quality Non-Destructive Testing, efficiency, cost, from
The requirement of dynamicization and onlineization degree also improves constantly.Point quality is characterized primarily by Joint Strength, and nugget size is to influence
The principal element of Joint Strength, therefore the detection of nugget forming core and its size is a weld through the key technology of quality Non-Destructive Testing.
Existing point quality non-destructive testing technology is broadly divided into on-line real time monitoring and postwelding Non-Destructive Testing.Utilize monitoring
The parameter of quality of welding spot is directly affected in pinpoint welding procedure, and the parameter feedback measured is controlled into its welding quality to control system
Method be referred to as on-line real time monitoring.This is a kind of method of Non-Destructive Testing indirectly, and it can not intuitively reflect the nugget of spot welding
Size and quality, are easily disturbed, and cost is high, complex operation, many uncertain factors be present.Postwelding Non-Destructive Testing mainly exists
Spot welding terminates rear butt welding point mass and carries out non-destructive Non-Destructive Testing, and it is mainly based on ultrasound examination, but its operating environment
Uniqueness seriously limit application of this method in on-line checking field.On the one hand, conventional Ultrasound a scannings are easily positioned
The influence of precision, so as to influence accuracy of detection；On the other hand, Ultrasonic C-scanning and focusing are again due to its Operating Complexity and right
The requirement of couplant substantially reduces spot welding production efficiency, and is difficult to apply in the on-line checking of point quality.Therefore, one is found
Intuitively lossless detection method is planted, its quality of welding spot is detected during spot welding, and high-speed automated on-line checking can be realized
It is current automobile manufacture industry urgent problem.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of to detect point quality in real time using ultrasonic penetration signal
Device and method, with reference to the advantages of two methods of on-line real time monitoring and postwelding Non-Destructive Testing, solves the positioning of ultrasonic probe
Error problem, and the technique for realizing resistance spot welding and its completion of quality testing on-line synchronous.
The technical solution adopted for the present invention to solve the technical problems is：Construction one kind is examined in real time using ultrasonic penetration signal
Survey the device of point quality, including ultrasonic probe and the ultrasound measuring instrument and computer that are connected with ultrasonic probe, in addition to spot welding
Machine and spot-wedling electrode, the spot-wedling electrode inside are provided with the cavity for accommodating cooling water, and the ultrasonic probe is placed in the cavity,
The spot-wedling electrode is provided with the cooling water hole connected with the cavity, and the ultrasonic probe includes transmitting probe and received to visit
Head, the spot-wedling electrode include Top electrode and bottom electrode, and the transmitting probe is embedded in inside Top electrode, in the receiving transducer
Inside bottom electrode.
In such scheme, the ultrasonic probe is embedded in electrode interior by flexible metal tube, is connected with ultrasonic probe
Wire be connected through flexible metal tube with ultrasound measuring instrument.
In such scheme, the wafer plane of the ultrasonic probe is parallel with spot-wedling electrode bottom surface.
Present invention also offers the device in real time detecting point quality described in a kind of utilization using ultrasonic penetration signal
Detection method, comprise the following steps：
S1, start mash welder, ultrasound measuring instrument and computer, cooling water is flowed into spot-wedling electrode by cooling water hole；
S2, in resistance spot welding process is carried out to sheet material, transmitting probe launches a series of ultrasonic scanning pulses, receiving transducer
Received transmission ultrasonic signal is converted to ultrasonic transmission wave shape figure by ultrasound measuring instrument, and is real-time transmitted to computer
In.
Present invention also offers one kind in the step S2, cooling water is as ultrasonic coupling agent.
In such scheme, the ultrasonic probe effective diameter is aboutWherein t is the thickness of slab of sheet material.
Implement the device for detecting point quality in real time using ultrasonic penetration signal of the present invention, have the advantages that：
1st, point quality real-time ultrasound Non-Destructive Testing is completed during resistance spot welding, efficiently, inexpensive, operation is simple
Just；
2nd, using Ultrasonic logging method directly, intuitively analyze quality of welding spot, by welding parameter fluctuation influenceed；
3rd, ultrasonic probe realizes solder joint detection positioning, avoids probe location error, improve inspection automatically inside spot-wedling electrode
Precision is surveyed, it is highly reliable；
What the 4th, cooling water was good act as ultrasonic-detection couplant, avoid cumbersome couplant spraying process, and simplification is set
It is standby, improve adaptability；
5th, the detection of resistance spot welding overall process is realized.The present invention can realize thin plate point quality online automatic detection, and energy
Effectively improve precision, accelerate efficiency.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation for detecting spot welding quality device in the present invention in real time using ultrasonic penetration signal；
Fig. 2 is Ultrasonic logging method point quality detection principle diagram in the present invention；
Fig. 3 is Ultrasonic logging method point quality detection waveform figure in the present invention.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now compares accompanying drawing and describe in detail
The embodiment of the present invention.
As shown in figure 1, the device of the invention for detecting point quality in real time using ultrasonic penetration signal, including ultrasonic probe,
Ultrasound measuring instrument 7, computer 8, mash welder and spot-wedling electrode.Ultrasonic probe is connected with ultrasound measuring instrument 7, ultrasound measuring instrument 7 with
Computer 8 connects.Wherein spot-wedling electrode includes Top electrode 1 and bottom electrode 12, and ultrasonic probe includes transmitting probe 4 and receiving transducer
11。
Ultrasonic probe is embedded in inside spot-wedling electrode, and the cavity for accommodating cooling water 3 is provided with inside spot-wedling electrode.Ultrasonic probe
It is placed in cavity, spot-wedling electrode is provided with the cooling water hole 2 connected with cavity.Ultrasonic probe is embedded in by flexible metal tube
Inside electrode 1, the wire 9 being connected with ultrasonic probe is connected through flexible metal tube 6 with ultrasound measuring instrument 7.Ultrasonic probe
Wafer plane is parallel with the bottom surface of spot-wedling electrode 1.Spot-wedling electrode 1 is provided with and the matching thread connecting hole 5 of flexible metal tube 6.Nothing
When damage detection means is used for solder joint Non-Destructive Testing, ultrasonic probe is positioned at the top of solder joint 10 to be measured.
The present embodiment additionally provides the detection using the above-mentioned device for detecting point quality in real time using ultrasonic penetration signal
Method.Such as 1.6+1.6mmDP590 dual phase sheet steel resistance spot welding real time comprehensives point quality is analyzed, utilize Ultrasonic logging method
Ultrasonic Nondestructive is carried out to spot welding overall process.
Its principle is as shown in Figure 2：At the end of spot welding precompressed, thin plate not yet melts, and has air between two-ply, receives
Probe can not receive the ultrasonic signal that transmitting probe is launched；At the end of spot welding is heated, the part gold between two layers of thin plate
Category has been completely melt to form liquid nugget, because the Ultrasonic characteristics difference of liquid nugget and mother metal is larger, therefore transmitting probe
The ultrasonic signal of transmitting can upper/lower electrode, on five roundtrips occurring on the interface of lower thin sheet and liquid nugget, this
A little reflected signals are received by through electrode, thin plate, liquid nugget and water layer by receiving transducer；At the end of spot welding cools down,
Solidification forms solder joint to liquid nugget completely, solder joint other ultrasonic characteristics in addition to attenuation coefficient consider it is identical with mother metal, therefore
The roundtrip three times that the ultrasonic signal of transmitting probe transmitting can occur on upper/lower electrode and the interface of nugget, these reflections
Signal is received by through electrode, thin plate, nugget and water layer by receiving transducer.In pinpoint welding procedure, cooling water serves simultaneously
The effect of ultrasonic coupling agent, its flow velocity is controlled, avoid its flow that significant changes occur and disturb ultrasonic signal.
First existing spot-wedling electrode is modified, electrode selects conventional cylinder electrode, outer diameter 16mm, inner diameter
10mm, basal diameter 6mm.Electrode side bores single hole, by effective diameter be 6mm by flexible metal tube, frequency be 15MHz's
Ultrasonic high frequency probe is embedded in inside spot-wedling electrode, is fabricated to the Top electrode containing transmitting probe and the bottom electrode containing receiving transducer,
And ensure that probe wafer plane is parallel with electrode bottom surface.Wire is connected through a screw thread, and is examined through flexible metal tube and ultrasound
Instrument is surveyed with computer to be connected.Conventional spot welding parameter is set to general high-frequency ac mash welder, and record spot welding squeeze time, being powered adds
The hot time, cool down hold time respectively 15 cycles, 12 cycles, 20 cycles (1 cycle is 0.02s).
Start ultrasound measuring instrument and computer, while start spot welding cooling device, cooling water is flowed into a little by cooling water hole
Ultrasonic transmission wave shape figure is shown in welding electrode, on computer.Spot welding overall process is divided into：Spot welding squeeze time section t1, it is powered and adds
Hot time period t2Held time a section t with cooling3.It is 12 μ s to set time delay, only retains a2、a3、a4And b2Transmission waveform
Figure.Start resistance spot welding switch, on the node that the cycle of precompressed 15,12 cycles of heating, 20 cycles of cooling terminate, computer is automatic
A ultrasonic reflection waveform figure is preserved, and names 11、12、13, as shown in Figure 3.Computer automatically processes Fig. 11、12、13：Fig. 11Nothing
Ultrasonic signal；Fig. 12In have the phenomenon that ultrasonic sound pressure amplitude rises, it was demonstrated that have a2、a3、a4Transmitted wave signal, and there occurs
Superposition, illustrates that plate metal has melted, and forms liquid nugget；Fig. 13In adjacent two corrugation pitches and velocity of ultrasonic sound product between
Between individual layer thickness of slab 1.6mm and double-deck thickness of slab 3.2mm, without obvious small echo, initial sound pressure amplitude is normal, and decay is normal, it was demonstrated that
Solder joint has impression, and nugget has been formed, and nugget size is more than probe wafer diameter 6mm.Comprehensive analysis point quality is qualified.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (6)
1. a kind of device for detecting point quality in real time using ultrasonic penetration signal, including ultrasonic probe and it is connected with ultrasonic probe
Ultrasound measuring instrument and computer, in addition to mash welder and spot-wedling electrode, it is characterised in that be provided with and hold inside the spot-wedling electrode
Receive the cavity of cooling water, the ultrasonic probe is placed in the cavity, and the spot-wedling electrode is provided with what is connected with the cavity
Cooling water hole, the ultrasonic probe include transmitting probe and receiving transducer, and the spot-wedling electrode includes Top electrode and bottom electrode, institute
State transmitting probe to be embedded in inside Top electrode, the receiving transducer is embedded in inside bottom electrode.
2. the device according to claim 1 for detecting point quality in real time using ultrasonic penetration signal, it is characterised in that institute
State ultrasonic probe and electrode interior is embedded in by flexible metal tube, the wire being connected with ultrasonic probe passes through flexible metal tube
It is connected with ultrasound measuring instrument.
3. the device according to claim 1 for detecting point quality in real time using ultrasonic penetration signal, it is characterised in that institute
The wafer plane for stating ultrasonic probe is parallel with spot-wedling electrode bottom surface.
A kind of 4. device for detecting point quality in real time using ultrasonic penetration signal using described in claim 1-3 any one
Detection method, it is characterised in that comprise the following steps：
S1, start mash welder, ultrasound measuring instrument and computer, cooling water is flowed into spot-wedling electrode by cooling water hole；
S2, in resistance spot welding process is carried out to sheet material, transmitting probe launches a series of ultrasonic scanning pulses, and receiving transducer is connect
The transmission ultrasonic signal received is converted to ultrasonic transmission wave shape figure by ultrasound measuring instrument, and is real-time transmitted in computer.
5. the detection method of the device according to claim 4 for detecting point quality in real time using ultrasonic penetration signal, its
It is characterised by, in the step S2, cooling water is as ultrasonic coupling agent.
6. the detection method of the device according to claim 4 for detecting point quality in real time using ultrasonic penetration signal, its
It is characterised by, the ultrasonic probe effective diameter is aboutWherein t is the thickness of slab of sheet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610407362.1A CN107478720A (en) | 2016-06-08 | 2016-06-08 | A kind of device and method for detecting point quality in real time using ultrasonic penetration signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610407362.1A CN107478720A (en) | 2016-06-08 | 2016-06-08 | A kind of device and method for detecting point quality in real time using ultrasonic penetration signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107478720A true CN107478720A (en) | 2017-12-15 |
Family
ID=60594388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610407362.1A Pending CN107478720A (en) | 2016-06-08 | 2016-06-08 | A kind of device and method for detecting point quality in real time using ultrasonic penetration signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107478720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098517A (en) * | 2020-09-30 | 2020-12-18 | 吉林大学 | Detection device and method for detecting friction stir spot welding by using composite ultrasonic |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3384733A (en) * | 1964-07-20 | 1968-05-21 | Army Usa | Ultrasonic inspection system and apparatus for resistance welds and the like |
| US3410983A (en) * | 1962-05-23 | 1968-11-12 | Deutsch Karl | Method and apparatus for resistance welding and testing |
| US3726130A (en) * | 1970-12-09 | 1973-04-10 | Budd Co | Method of monitoring a welding operation |
| US3810385A (en) * | 1971-02-22 | 1974-05-14 | Mc Donnell Douglas Corp | Transducer means for ultrasonic extensometer |
| US4711984A (en) * | 1987-03-09 | 1987-12-08 | General Motors Corporation | Ultrasonic method and apparatus for spot weld control |
| CN104708216A (en) * | 2015-03-04 | 2015-06-17 | 天津大学 | Coaxial type ultrasound-assisted resistance spot welding device and method |
-
2016
- 2016-06-08 CN CN201610407362.1A patent/CN107478720A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3410983A (en) * | 1962-05-23 | 1968-11-12 | Deutsch Karl | Method and apparatus for resistance welding and testing |
| US3384733A (en) * | 1964-07-20 | 1968-05-21 | Army Usa | Ultrasonic inspection system and apparatus for resistance welds and the like |
| US3726130A (en) * | 1970-12-09 | 1973-04-10 | Budd Co | Method of monitoring a welding operation |
| US3810385A (en) * | 1971-02-22 | 1974-05-14 | Mc Donnell Douglas Corp | Transducer means for ultrasonic extensometer |
| US4711984A (en) * | 1987-03-09 | 1987-12-08 | General Motors Corporation | Ultrasonic method and apparatus for spot weld control |
| CN104708216A (en) * | 2015-03-04 | 2015-06-17 | 天津大学 | Coaxial type ultrasound-assisted resistance spot welding device and method |
Non-Patent Citations (1)
| Title |
|---|
| BIN WANG等: "Effects of electrode tip morphology on resistance spot welding quality of DP590 dual-phase steel", 《SPRINGER》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098517A (en) * | 2020-09-30 | 2020-12-18 | 吉林大学 | Detection device and method for detecting friction stir spot welding by using composite ultrasonic |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107478721A (en) | A kind of point quality real-time ultrasound the cannot-harm-detection device and method | |
| US10823703B2 (en) | Real-time fusion of ultrasound and eddy current data during non-destructive examination | |
| US9063059B2 (en) | Three-dimensional matrix phased array spot weld inspection system | |
| US11353430B2 (en) | Phased array probe and method for testing a spot-weld | |
| US9733219B2 (en) | Automated weld inspection system with weld acceptability pass or fail indications | |
| US9037419B2 (en) | Portable matrix phased array spot weld inspection system | |
| CN102207488B (en) | Positioning method of transverse wave TOFD (Time of Flight Diffraction) defect | |
| CN108562647A (en) | The polyethylene pipe hot melt banjo fixing butt jointing supersonic detection device and method that PA-TOFD is combined | |
| JP2018513976A (en) | Phased array system for inspection of laser welds | |
| CN108872380B (en) | Method for detecting bonding defect of multilayer bonding member | |
| US6250163B1 (en) | EMATS for spot weld examination | |
| EP3108233A1 (en) | Portable matrix phased array spot-weld inspection system | |
| CN106124624A (en) | A kind of thin plate point quality automatic detection device and method | |
| CN102590342B (en) | Ultrasonic nondestructive testing system for large blacksmith welding pieces | |
| CN114147382B (en) | Method and device for on-line monitoring of electric and ultrasonic signal combined resistance spot welding quality | |
| CN108802202A (en) | A kind of ultrasonic wave tandem probe apparatus and method | |
| CN107478720A (en) | A kind of device and method for detecting point quality in real time using ultrasonic penetration signal | |
| CN203117167U (en) | Ultrasonic detector for road steel bridge | |
| CN105911142A (en) | Friction stirring welding phased array detection device and method of aluminum alloy hollow sectional material | |
| CN108956779A (en) | A kind of Resistance Welding point detecting method based on total focus synthetic aperture technique | |
| Liu et al. | Real-time nondestructive evaluation of electrode weld stacks using a laser vibrometer and shock tube | |
| CN109187741A (en) | Large-scale storage tank bottom plate weld seam health status on-line monitoring method | |
| Suresh et al. | Fuel tube spacer-pad spot-weld quality estimation using guided ultrasonic waves | |
| JP3753567B2 (en) | Ultrasonic probe | |
| CN210803363U (en) | Device for detecting adhesive layer of automobile tail door |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |
|
| RJ01 | Rejection of invention patent application after publication |