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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- 238000003756 stirring Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010008 shearing Methods 0.000 title claims 11
- 238000003466 welding Methods 0.000 title abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 47
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000011430 maximum method Methods 0.000 claims 10
- 238000005452 bending Methods 0.000 abstract description 8
- 238000000691 measurement method Methods 0.000 abstract description 5
- 125000006850 spacer group Chemical group 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- -1 high welding quality Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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Abstract
测量搅拌摩擦点焊接头最大拉剪力的方法，它涉及一种测量搅拌摩擦点焊接头拉剪力的测量方法，以解决传统拉剪测量方法中附加弯矩对搅拌摩擦点焊接头最大拉剪力测量不准确的问题。方法：一、制作卡具：加工上支撑侧板和下支撑侧板，上支撑侧板的长度为拉剪测量试件搭接部分厚度的10～20倍；二、组装拉剪测量试件：拉剪测量试件置于上支撑侧板与下支撑侧板之间，拉剪测量试件的两侧未搭接部分分别放置厚度与被焊板材厚度相等的垫块；三、进行拉剪测量：组装后的拉剪测量试件、卡具及垫块装卡在拉剪试验机上，以0.5～1.5mm/min的加载速度对拉剪测量试件进行拉剪试验，并记录最大拉剪试验载荷。本发明用于测量搅拌摩擦点焊接头拉剪力。
A method for measuring the maximum tensile shear force of friction stir spot welded joints, which relates to a measurement method for measuring the tensile shear force of friction stir spot welded joints, in order to solve the problem of the additional bending moment on the maximum tensile shear force of friction stir spot welded joints in the traditional tensile shear measurement method The problem of inaccurate force measurement. Method: 1. Make the fixture: process the upper support side plate and the lower support side plate. The length of the upper support side plate is 10 to 20 times the thickness of the lapped part of the tension-shear measurement specimen; 2. Assemble the tension-shear measurement specimen: The tensile-shear measurement specimen is placed between the upper support side plate and the lower support side plate, and the non-lapped parts on both sides of the tensile-shear measurement specimen are respectively placed with pads whose thickness is equal to the thickness of the welded plate; 3. Conduct tension-shear measurement : The assembled tensile-shear test piece, jig and spacer are clamped on the tensile-shear testing machine, and the tensile-shear test piece is subjected to a tensile-shear test at a loading speed of 0.5-1.5 mm/min, and the maximum tensile-shear test is recorded load. The invention is used for measuring the tensile shear force of the friction stir spot welding joint.
Description
技术领域technical field
本发明涉及一种测量搅拌摩擦点焊接头拉剪力的方法，具体涉及一种测量搅拌摩擦点焊接头最大拉剪力的方法。The invention relates to a method for measuring the tensile shear force of a friction stir spot welding joint, in particular to a method for measuring the maximum tensile shear force of a friction stir spot welding joint.
背景技术Background technique
搅拌摩擦点焊是一种新型的点焊技术，与传统电阻点焊相比在焊接低熔点金属时具有诸多优点，例如焊接质量高、生产成本低、无环境污染等。评价搅拌摩擦点焊接头最重要的性能指标为最大拉剪力，但由于点焊接头的不对称性，传统的拉剪测量方法是对拉剪测量试件施加较大的附加弯矩，使其发生弯曲-剪切混合断裂，从而影响最大拉剪力的测量结果。因此，传统的拉剪测量方法难以准确测量出搅拌摩擦点焊接头的最大拉剪力。Friction stir spot welding is a new type of spot welding technology. Compared with traditional resistance spot welding, it has many advantages in welding low melting point metals, such as high welding quality, low production cost, and no environmental pollution. The most important performance index for evaluating friction stir spot welded joints is the maximum tensile shear force. However, due to the asymmetry of spot welded joints, the traditional tensile shear measurement method is to apply a large additional bending moment to the tensile shear measurement specimen to make it Bending-shear mixed fracture occurs, which affects the measurement of the maximum tensile shear force. Therefore, it is difficult to accurately measure the maximum tensile shear force of the friction stir spot welded joint by the traditional tensile shear measurement method.
发明内容Contents of the invention
本发明的目的是为解决传统拉剪测量方法中附加弯矩对搅拌摩擦点焊接头最大拉剪力测量结果产生影响，导致测量不准确的问题，提出一种测量搅拌摩擦点焊接头最大拉剪力的方法。The purpose of the present invention is to solve the problem that the additional bending moment in the traditional tension-shear measurement method affects the measurement results of the maximum tension-shear force of the friction stir spot welded joint, resulting in inaccurate measurement, and proposes a method for measuring the maximum tension-shear force of the friction stir spot welded joint method of force.
测量搅拌摩擦点焊接头最大拉剪力的方法是通过以下步骤实现的：The method of measuring the maximum tensile shear force of the friction stir spot welded joint is realized through the following steps:
步骤一、制作卡具：加工上支撑侧板和下支撑侧板，使上支撑侧板与下支撑侧板的长度相等，且上支撑侧板的长度为拉剪测量试件搭接部分厚度的10倍～20倍，上支撑侧板与下支撑侧板上下平行设置，其间隙等于拉剪测量试件搭接部分的厚度，上支撑侧板与下支撑侧板通过螺栓螺母连接；Step 1. Make the fixture: process the upper support side plate and the lower support side plate, so that the lengths of the upper support side plate and the lower support side plate are equal, and the length of the upper support side plate is the thickness of the overlapping part of the test piece measured by tensile shear. 10 times to 20 times, the upper support side plate and the lower support side plate are arranged in parallel up and down, and the gap is equal to the thickness of the overlapping part of the tensile shear measurement specimen, and the upper support side plate and the lower support side plate are connected by bolts and nuts;
步骤二、组装拉剪测量试件：将拉剪测量试件置于上支撑侧板与下支撑侧板之间，并通过螺栓螺母调节上支撑侧板与下支撑侧板的间隙，使其恰好等于拉剪测量试件搭接部分的厚度，在拉剪测量试件的两侧未搭接部分分别放置厚度与被焊板材厚度相等的垫块；Step 2. Assemble the tensile-shear measurement specimen: place the tensile-shear measurement specimen between the upper support side plate and the lower support side plate, and adjust the gap between the upper support side plate and the lower support side plate through bolts and nuts to make it just right It is equal to the thickness of the overlapped part of the tension-shear measurement specimen, and the pads with the thickness equal to the thickness of the plate to be welded are respectively placed on the non-lapped parts of both sides of the tension-shear measurement specimen;
步骤三、进行拉剪测量：将组装后的拉剪测量试件、卡具及垫块装卡在拉剪试验机上，以0.5mm/min～1.5mm/min的加载速度对拉剪测量试件进行拉剪试验，当拉剪测量试件完全断裂后停止试验，并记录最大拉剪试验载荷。Step 3. Perform tensile and shear measurement: install the assembled tensile and shear measurement specimen, fixture and spacer on the tensile and shear testing machine, and test the tensile and shear measurement specimen at a loading speed of 0.5mm/min～1.5mm/min Carry out the tensile-shear test, stop the test when the tensile-shear measurement specimen is completely broken, and record the maximum tensile-shear test load.
本发明与现有技术相比具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
一、在拉剪测量过程中，上支撑侧板和下支撑侧板可对拉剪测量试件进行约束，保证工件在纯拉剪条件下发生破断。此外，上支撑侧板和下支撑侧板的长度远远大于拉剪测量试件搭接部分的厚度，这样可以使拉剪测量试件所受附加弯矩的影响忽略不计。因此，测量结果可以真实地反映接头的最大拉剪力。1. During the tension-shear measurement process, the upper support side plate and the lower support side plate can constrain the tension-shear measurement specimen to ensure that the workpiece breaks under pure tension-shear conditions. In addition, the lengths of the upper support side plate and the lower support side plate are far greater than the thickness of the overlapping part of the tension-shear measurement specimen, so that the influence of the additional bending moment on the tension-shear measurement specimen can be ignored. Therefore, the measurement results can truly reflect the maximum tensile shear force of the joint.
二、此外，通过螺栓螺母调节上支撑侧板与下支撑侧板的间隙，可以实现不同搭接厚度拉剪测量试件的拉剪测量。2. In addition, by adjusting the gap between the upper support side plate and the lower support side plate through the bolts and nuts, the tensile shear measurement of the tensile shear measurement specimens with different lap joint thicknesses can be realized.
附图说明Description of drawings
图1是具体实施方式一的步骤二中拉剪测量试件与卡具组装后的主剖视图；Fig. 1 is the main cross-sectional view after the tensile-shear measurement specimen and fixture are assembled in the step 2 of the specific embodiment one;
图2是具体实施方式一的步骤二中拉剪测量试件与卡具组装后的立体图。Fig. 2 is a perspective view of the assembly of the tension-shear measurement specimen and the fixture in step 2 of the first embodiment.
具体实施方式Detailed ways
具体实施方式一：结合图1和图2说明本实施方式，本实施方式是通过以下步骤实现的：Specific embodiment one: this embodiment is described in conjunction with Fig. 1 and Fig. 2, and this embodiment is realized through the following steps:
步骤一、制作卡具：加工上支撑侧板1和下支撑侧板2，使上支撑侧板1与下支撑侧板2的长度相等，且上支撑侧板1的长度L为拉剪测量试件3搭接部分厚度t的10倍～20倍，上支撑侧板1与下支撑侧板2上下平行设置，其间隙等于拉剪测量试件3搭接部分的厚度，上支撑侧板1与下支撑侧板2通过螺栓螺母5连接；Step 1. Making the jig: process the upper support side plate 1 and the lower support side plate 2, so that the lengths of the upper support side plate 1 and the lower support side plate 2 are equal, and the length L of the upper support side plate 1 is the tensile shear test 10 to 20 times the thickness t of the overlapping part of the piece 3, the upper supporting side plate 1 and the lower supporting side plate 2 are arranged in parallel up and down, and the gap is equal to the thickness of the overlapping part of the test piece 3 in tensile shear measurement, and the upper supporting side plate 1 and the lower supporting side plate 2 are arranged parallel to each other. The lower support side plate 2 is connected by bolts and nuts 5;
步骤二、组装拉剪测量试件3：将拉剪测量试件3置于上支撑侧板1与下支撑侧板2之间，并通过螺栓螺母5调节上支撑侧板1与下支撑侧板2的间隙，使其恰好等于拉剪测量试件3搭接部分的厚度t，在拉剪测量试件3的两侧未搭接部分分别放置厚度与被焊板材厚度相等的垫块4；Step 2. Assemble the tensile-shear measurement specimen 3: place the tensile-shear measurement specimen 3 between the upper support side plate 1 and the lower support side plate 2, and adjust the upper support side plate 1 and the lower support side plate through bolts and nuts 5 2, so that it is exactly equal to the thickness t of the overlapped part of the tension-shear measurement test piece 3, and place pads 4 whose thickness is equal to the thickness of the plate to be welded on the non-lapped parts on both sides of the tension-shear measurement test piece 3;
步骤三、进行拉剪测量：将组装后的拉剪测量试件3、卡具及垫块4装卡在拉剪试验机上，以0.5mm/min～1.5mm/min的加载速度对拉剪测量试件3进行拉剪试验，当拉剪测量试件3完全断裂后停止试验，并记录最大拉剪试验载荷F。Step 3. Perform tensile and shear measurement: install the assembled tensile and shear measurement specimen 3, fixture and pad 4 on the tensile and shear testing machine, and measure the tensile and shear at a loading speed of 0.5mm/min～1.5mm/min Specimen 3 is subjected to a tensile-shear test, and the test is stopped when the tensile-shear measurement specimen 3 is completely broken, and the maximum tensile-shear test load F is recorded.
具体实施方式二：结合图1说明本实施方式，本实施方式是步骤一中上支撑侧板1的长度L为拉剪测量试件3搭接部分厚度t的12倍。这样可以使拉剪测量试件3所受附加弯矩的影响忽略不计。其它步骤与具体实施方式一相同。Embodiment 2: This embodiment is described in conjunction with FIG. 1 . In this embodiment, the length L of the upper support side plate 1 in step 1 is 12 times the thickness t of the overlapping portion of the tensile and shear measurement test piece 3 . In this way, the influence of the additional bending moment on the tensile-shear measurement specimen 3 can be neglected. Other steps are the same as in the first embodiment.
具体实施方式三：结合图1说明本实施方式，本实施方式是步骤一中上支撑侧板1的长度L为拉剪测量试件3搭接部分厚度t的14倍。这样可以使拉剪测量试件3所受附加弯矩的影响忽略不计。其它步骤与具体实施方式一相同。Embodiment 3: This embodiment is described in conjunction with FIG. 1 . In this embodiment, the length L of the upper support side plate 1 in step 1 is 14 times the thickness t of the overlapping part of the tension-shear measurement test piece 3 . In this way, the influence of the additional bending moment on the tensile-shear measurement specimen 3 can be neglected. Other steps are the same as in the first embodiment.
具体实施方式四：结合图1说明本实施方式，本实施方式是步骤一中上支撑侧板1的长度L为拉剪测量试件3搭接部分厚度t的16倍。这样可以使拉剪测量试件3所受附加弯矩的影响忽略不计。其它步骤与具体实施方式一相同。Embodiment 4: This embodiment is described in conjunction with FIG. 1 . In this embodiment, the length L of the upper support side plate 1 in step 1 is 16 times the thickness t of the overlapping part of the tensile and shear measurement test piece 3 . In this way, the influence of the additional bending moment on the tensile-shear measurement specimen 3 can be neglected. Other steps are the same as in the first embodiment.
具体实施方式五：结合图1说明本实施方式，本实施方式是步骤一中上支撑侧板1的长度L为拉剪测量试件3搭接部分厚度t的18倍。这样可以使拉剪测量试件3所受附加弯矩的影响忽略不计。其它步骤与具体实施方式一相同。Embodiment 5: This embodiment is described in conjunction with FIG. 1 . In this embodiment, the length L of the upper support side plate 1 in step 1 is 18 times the thickness t of the overlapping part of the tensile and shear measurement test piece 3 . In this way, the influence of the additional bending moment on the tensile-shear measurement specimen 3 can be neglected. Other steps are the same as in the first embodiment.
具体实施方式六：结合图1和图2说明本实施方式，本实施方式是所述步骤三中加载速度为0.6mm/min。其它步骤与具体实施方式一相同。Embodiment 6: This embodiment is described in conjunction with FIG. 1 and FIG. 2 . In this embodiment, the loading speed in step 3 is 0.6 mm/min. Other steps are the same as in the first embodiment.
具体实施方式七：结合图1和图2说明本实施方式，本实施方式是所述步骤三中加载速度为0.8mm/min。其它步骤与具体实施方式一相同。Embodiment 7: This embodiment is described with reference to FIG. 1 and FIG. 2 . In this embodiment, the loading speed in step 3 is 0.8 mm/min. Other steps are the same as in the first embodiment.
具体实施方式八：结合图1和图2说明本实施方式，本实施方式是所述步骤三中加载速度为1mm/min。其它步骤与具体实施方式一相同。Embodiment 8: This embodiment is described with reference to FIG. 1 and FIG. 2 . In this embodiment, the loading speed in step 3 is 1 mm/min. Other steps are the same as in the first embodiment.
具体实施方式九：结合图1和图2说明本实施方式，本实施方式是所述步骤三中加载速度为1.2mm/min。其它步骤与具体实施方式一相同。Ninth specific embodiment: This embodiment will be described with reference to Fig. 1 and Fig. 2. In this embodiment, the loading speed in step 3 is 1.2 mm/min. Other steps are the same as in the first embodiment.
具体实施方式十：结合图1和图2说明本实施方式，本实施方式是所述步骤三中加载速度为1.4mm/min。其它步骤与具体实施方式一相同。Embodiment 10: This embodiment is described with reference to FIG. 1 and FIG. 2 . In this embodiment, the loading speed in step 3 is 1.4 mm/min. Other steps are the same as in the first embodiment.
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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 |
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| 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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| 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 |
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| 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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