CN103592185B - Measuring method for maximum tensile and shearing force of spot-welded joint of friction stir welding - Google Patents
Measuring method for maximum tensile and shearing force of spot-welded joint of friction stir welding Download PDFInfo
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- CN103592185B CN103592185B CN201310626656.XA CN201310626656A CN103592185B CN 103592185 B CN103592185 B CN 103592185B CN 201310626656 A CN201310626656 A CN 201310626656A CN 103592185 B CN103592185 B CN 103592185B
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Abstract
The invention relates to a measuring method for the tensile and shearing force of a spot-welded joint of friction stir welding and specifically provides a measuring method for the maximum tensile and shearing force of the spot-welded joint of friction stir welding to overcome the problem that measurement results of the maximum tensile and shearing force of a spot-welded joint of friction stir welding is not accurate in a traditional tensile and shearing force measurement method due to influence of additional bending moment. The method comprises the following steps: 1, fabrication of a fixture, wherein an upper support side plate and a lower support side plate are processed, and the length of the upper support side plate is 10 to 20 times thickness of the lap part of a test piece for tensile and shearing testing; 2, assembling of the test piece for tensile and shearing testing, wherein the test piece for tensile and shearing testing is arranged between the upper support side plate and the lower support side plate, and the non-lap parts at two sides of the test piece are respectively provided with a cushion block with thickness identical to the thickness of a sheet material to be welded; and 3, tensile and shearing testing, wherein the assembled test piece for tensile and shearing testing, the fixture and the cushion blocks are clamped on a tensile and shearing testing machine, tensile and shearing testing is carried out on the test piece for tensile and shearing testing at a loading speed of 0.5 to 1.5 mm/min, and a maximum tensile and shearing test load is recorded. The method provided by the invention is used for measuring the maximum tensile and shearing force of the spot-welded joint of friction stir welding.
Description
Technical field
The present invention relates to and a kind ofly measure the method that friction stir spot soldered joint draws shearing, be specifically related to a kind ofly measure the maximum method of drawing shearing of friction stir spot soldered joint.
Background technology
Friction stir spot welding is a kind of novel spot-welding technology, has plurality of advantages compared with traditional resistor spot welding when welding low-melting-point metal, and such as welding quality is high, production cost is low, non-environmental-pollution etc.Evaluating friction stir spot soldered joint most important performance index is maximumly draw shearing, but due to the asymmetry of tack-weld, traditional draw that to cut measuring method be measure test specimen apply larger additional bending moment to drawing to cut, make its-shear-mixed fracture that bends, thus have the greatest impact and draw the measurement result of shearing.Therefore, traditional drawing is cut measuring method and is difficult to accurately measure the maximum of friction stir spot soldered joint and draws shearing.
Summary of the invention
The object of the invention is to draw and cut additional bending moment in measuring method for solving tradition and have an impact to the maximum shearing force measurement result of drawing of friction stir spot soldered joint, cause measuring inaccurate problem, propose a kind ofly to measure the maximum method of drawing shearing of friction stir spot soldered joint.
Measure the maximum method of shearing of drawing of friction stir spot soldered joint to be realized by following steps:
Step one, making jig: support side plate and lower support side plate in processing, make support side plate equal with the length of lower support side plate, and the length of upper support side plate is draw 10 times ~ 20 times that cut and measure test specimen overlap thickness, upper support side plate and lower support side plate be arranged in parallel up and down, its gap equals to draw the thickness cut and measure test specimen overlap, and upper support side plate is connected by bolt and nut with lower support side plate;
Step 2, assembling are drawn and are cut measurement test specimen: will draw and cut measurement test specimen and be placed between support side plate and lower support side plate, and the gap of upper support side plate and lower support side plate is regulated by bolt and nut, making it just equal to draw the thickness cut and measure test specimen overlap, placing the thickness cushion block equal with welded sheet metal thickness respectively drawing the non-overlap in both sides cutting measurement test specimen;
Step 3, carry out drawing cutting measurement: drawing after assembling is cut and measures test specimen, jig and cushion block and be installed on tensile shear testing machine, with the loading velocity of 0.5mm/min ~ 1.5mm/min to draw cut measure test specimen carry out tensile shear testing, stop test when drawing to cut to measure after test specimen ruptures completely, and record maximum tensile shear testing load.
The present invention compared with prior art has following beneficial effect:
One, cut in measuring process drawing, upper support side plate and lower support side plate can be measured test specimen and retrain drawing to cut, ensure workpiece pure draw the condition of cutting under occur disrumpent feelings.In addition, the length of upper support side plate and lower support side plate is far longer than the thickness drawing and cut and measure test specimen overlap, can make to draw the impact of cutting additional bending moment suffered by measurement test specimen to be ignored like this.Therefore, measurement result can reflect that the maximum of joint draws shearing truly.
Two, in addition, regulated the gap of upper support side plate and lower support side plate by bolt and nut, different overlap joint thickness can be realized and draw and cut drawing of test specimen of measurement and cut measurement.
Accompanying drawing explanation
Fig. 1 be draw in the step 2 of embodiment one cut measure test specimen and jig assemble after main cut-open view;
Fig. 2 be draw in the step 2 of embodiment one cut measure test specimen and jig assemble after stereographic map.
Embodiment
Embodiment one: composition graphs 1 and Fig. 2 illustrate present embodiment, and present embodiment is realized by following steps:
Step one, making jig: support side plate 1 and lower support side plate 2 in processing, make support side plate 1 equal with the length of lower support side plate 2, and the length L of upper support side plate 1 draws 10 times ~ 20 times that cut and measure test specimen 3 overlap thickness t, upper support side plate 1 be arranged in parallel with lower support side plate about 2, its gap equals to draw the thickness cut and measure test specimen 3 overlap, and upper support side plate 1 is connected by bolt and nut 5 with lower support side plate 2;
Step 2, assembling draw cut measure test specimen 3: will draw cut measurement test specimen 3 be placed between support side plate 1 and lower support side plate 2, and the gap of upper support side plate 1 and lower support side plate 2 is regulated by bolt and nut 5, making it just equal to draw the thickness t cutting and measure test specimen 3 overlap, placing the thickness cushion block equal with welded sheet metal thickness 4 respectively drawing the non-overlap in both sides cutting measurement test specimen 3;
Step 3, carry out drawing cutting measurement: drawing after assembling is cut and measures test specimen 3, jig and cushion block 4 and be installed on tensile shear testing machine, with the loading velocity of 0.5mm/min ~ 1.5mm/min to draw cut measure test specimen 3 carry out tensile shear testing, stop test when drawing to cut to measure after test specimen 3 ruptures completely, and record maximum tensile shear testing load F.
Embodiment two: composition graphs 1 illustrates present embodiment, present embodiment is the length L of upper support side plate 1 in step one is draw 12 times that cut and measure test specimen 3 overlap thickness t.Can make to draw the impact of cutting additional bending moment suffered by measurement test specimen 3 to be ignored like this.Other step is identical with embodiment one.
Embodiment three: composition graphs 1 illustrates present embodiment, present embodiment is the length L of upper support side plate 1 in step one is draw 14 times that cut and measure test specimen 3 overlap thickness t.Can make to draw the impact of cutting additional bending moment suffered by measurement test specimen 3 to be ignored like this.Other step is identical with embodiment one.
Embodiment four: composition graphs 1 illustrates present embodiment, present embodiment is the length L of upper support side plate 1 in step one is draw 16 times that cut and measure test specimen 3 overlap thickness t.Can make to draw the impact of cutting additional bending moment suffered by measurement test specimen 3 to be ignored like this.Other step is identical with embodiment one.
Embodiment five: composition graphs 1 illustrates present embodiment, present embodiment is the length L of upper support side plate 1 in step one is draw 18 times that cut and measure test specimen 3 overlap thickness t.Can make to draw the impact of cutting additional bending moment suffered by measurement test specimen 3 to be ignored like this.Other step is identical with embodiment one.
Embodiment six: composition graphs 1 and Fig. 2 illustrate present embodiment, present embodiment is that in described step 3, loading velocity is 0.6mm/min.Other step is identical with embodiment one.
Embodiment seven: composition graphs 1 and Fig. 2 illustrate present embodiment, present embodiment is that in described step 3, loading velocity is 0.8mm/min.Other step is identical with embodiment one.
Embodiment eight: composition graphs 1 and Fig. 2 illustrate present embodiment, present embodiment is that in described step 3, loading velocity is 1mm/min.Other step is identical with embodiment one.
Embodiment nine: composition graphs 1 and Fig. 2 illustrate present embodiment, present embodiment is that in described step 3, loading velocity is 1.2mm/min.Other step is identical with embodiment one.
Embodiment ten: composition graphs 1 and Fig. 2 illustrate present embodiment, present embodiment is that in described step 3, loading velocity is 1.4mm/min.Other step is identical with embodiment one.
Claims (10)
1. measure the maximum method of drawing shearing of friction stir spot soldered joint, it is characterized in that: described method is realized by following steps:
Step one, making jig: support side plate (1) and lower support side plate (2) in processing, make support side plate (1) equal with the length of lower support side plate (2), and the length L of upper support side plate (1) is for drawing 10 times ~ 20 times that cut and measure test specimen (3) overlap thickness t, upper support side plate (1) and lower support side plate (2) be arranged in parallel up and down, its gap equals to draw the thickness cut and measure test specimen (3) overlap, and upper support side plate (1) is connected by bolt and nut (5) with lower support side plate (2);
Step 2, assembling draw cut measure test specimen (3): will draw cut measurement test specimen (3) be placed between support side plate (1) and lower support side plate (2), and by the gap of support side plate (1) in bolt and nut (5) adjustment with lower support side plate (2), making it just equal to draw the thickness t cutting and measure test specimen (3) overlap, placing the thickness cushion block equal with welded sheet metal thickness (4) respectively drawing the non-overlap in both sides cutting measurement test specimen (3);
Step 3, carry out drawing cutting measurement: drawing after assembling is cut and measures test specimen (3), jig and cushion block (4) and be installed on tensile shear testing machine, with the loading velocity of 0.5mm/min ~ 1.5mm/min to draw cut measure test specimen (3) carry out tensile shear testing, stop test when drawing to cut to measure after test specimen (3) ruptures completely, and record maximum tensile shear testing load F.
2. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step one, the length L of upper support side plate (1) is for drawing 12 times that cut and measure test specimen (3) overlap thickness t.
3. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step one, the length L of upper support side plate (1) is for drawing 14 times that cut and measure test specimen (3) overlap thickness t.
4. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step one, the length L of upper support side plate (1) is for drawing 16 times that cut and measure test specimen (3) overlap thickness t.
5. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step one, the length L of upper support side plate (1) is for drawing 18 times that cut and measure test specimen (3) overlap thickness t.
6. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step 3, loading velocity is 0.6mm/min.
7. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step 3, loading velocity is 0.8mm/min.
8. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step 3, loading velocity is 1mm/min.
9. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step 3, loading velocity is 1.2mm/min.
10. measure the maximum method of drawing shearing of friction stir spot soldered joint according to claim 1, it is characterized in that: in described step 3, loading velocity is 1.4mm/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310626656.XA CN103592185B (en) | 2013-11-29 | 2013-11-29 | Measuring method for maximum tensile and shearing force of spot-welded joint of friction stir welding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310626656.XA CN103592185B (en) | 2013-11-29 | 2013-11-29 | Measuring method for maximum tensile and shearing force of spot-welded joint of friction stir welding |
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| CN103592185A CN103592185A (en) | 2014-02-19 |
| CN103592185B true CN103592185B (en) | 2015-07-22 |
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| CN201310626656.XA Expired - Fee Related CN103592185B (en) | 2013-11-29 | 2013-11-29 | Measuring method for maximum tensile and shearing force of spot-welded joint of friction stir welding |
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| CN105181437A (en) * | 2015-06-08 | 2015-12-23 | 成都理工大学 | Tension shear fracture simulation test device for fractured rock mass |
| CN105136575A (en) * | 2015-09-07 | 2015-12-09 | 江苏大学 | Welding-type superhard blade mechanical property test device and method |
| CN106840874A (en) * | 2017-01-05 | 2017-06-13 | 航天科工防御技术研究试验中心 | A kind of laser welding overlaps weldment shearing force performance test methods |
| CN108896412B (en) * | 2018-05-14 | 2020-11-24 | 安徽路港通工程试验检测有限公司 | Fillet welding quality detection method for planar plate and angular plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DD274277A1 (en) * | 1988-07-25 | 1989-12-13 | Zentralinstitut Schweiss | DEVICE FOR THE EXPERIMENTAL SCHERKRAFT PROVISION OF POINT WELDING COMPOUNDS |
| US5705752A (en) * | 1996-03-01 | 1998-01-06 | The Aerospace Corporation | Rubber substrate shear lap-joint testing fixture and method |
| US6453752B1 (en) * | 2000-02-07 | 2002-09-24 | Ford Global Technologies, Inc. | Fixture for testing shear strength in tailor welded blanks |
| CN102645382B (en) * | 2012-04-01 | 2015-11-11 | 郑州宇通客车股份有限公司 | For measuring the test method of solder joint shear resistance and special test unit thereof |
| JP2013234910A (en) * | 2012-05-09 | 2013-11-21 | Tosoh Corp | Auxiliary tool for bonding strength measurement |
| CN102680331B (en) * | 2012-05-14 | 2014-01-15 | 湖北航天技术研究院总体设计所 | Check method for shear strength of welding joint of linear welding seam |
| CN203011766U (en) * | 2012-12-25 | 2013-06-19 | 上海大学 | Assistant locating and clamping device for tensile test of spot welding test sample |
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