WO2012003794A1 - 一种测量焊点正向拉伸强度的方法及夹具 - Google Patents

一种测量焊点正向拉伸强度的方法及夹具 Download PDF

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Publication number
WO2012003794A1
WO2012003794A1 PCT/CN2011/076856 CN2011076856W WO2012003794A1 WO 2012003794 A1 WO2012003794 A1 WO 2012003794A1 CN 2011076856 W CN2011076856 W CN 2011076856W WO 2012003794 A1 WO2012003794 A1 WO 2012003794A1
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Prior art keywords
hole
test
holes
tensile strength
mounting surface
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PCT/CN2011/076856
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English (en)
French (fr)
Inventor
金泉军
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奇瑞汽车股份有限公司
芜湖普威技研有限公司
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Publication of WO2012003794A1 publication Critical patent/WO2012003794A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0017—Tensile

Definitions

  • the invention belongs to the technical field of welding testing, and in particular to a method and a fixture for measuring the forward tensile strength of a solder joint. Background technique
  • Spot welding has the advantages of light weight, high static strength, good reliability, stable performance and easy automation. It has been widely used as a structural connection method in modern automobile bodies. Generally speaking, more than 90% of the car body welding points will be used. spot welding. The failure of the body solder joint is mainly due to the effect of the combined force, which causes the solder joint to crack. Therefore, in order to ensure the safety and reliability of the body structure, it is the focus of current research to consider the extreme value that the solder joint can withstand.
  • the method can basically overcome the defect that the deformation of the tensile surface of the solder joint is not uniform deformation, but the method has obvious defects: it is mainly for materials with low strength and good moldability, that is to say, the patent application In the middle, the shape of the test plate square box is realized by punching, and therefore, a material having good moldability is required to be realized.
  • high-strength steels and ultra-high-strength steels have been widely used in automobiles to achieve the purpose of light weight. These materials have poor formability and require special treatment to achieve molding. If the direct punching will not achieve the square box shape, it will bring great difficulties to the test, and the test cost will be greatly improved. There is an urgent need for improved exploration and research on current test methods to reduce the impact of the material's own formability on the test. Summary of the invention
  • a first object of the present invention is to provide a method for measuring the forward tensile strength of a solder joint which can accurately measure the forward tensile strength of the solder joint without being limited by the formability of the material itself.
  • the method for measuring the forward tensile strength of a solder joint of the present invention comprises the following steps:
  • the through holes having the same position and size are drilled on the two test plates, wherein the through holes on each of the test plates are evenly distributed on one circumference, and the through holes include the first through holes having larger apertures And a smaller aperture
  • Two through holes, the first through holes and the second through holes are equal in number and arranged at intervals;
  • the through hole includes a third through hole and a fourth through hole, and an aperture of the third through hole and an aperture of the fourth through hole are respectively equal to an aperture of the first through hole and an aperture of the second through hole.
  • the tensile speed of ⁇ 10 mm/min was slowly loaded, and the tensile test was performed until the solder joints of the test plates were broken.
  • the test data was recorded and the tensile load-displacement curve analysis was performed.
  • the first through hole and the second through hole are equal in number and arranged at intervals, so that the tensile force of the test sheet during stretching is the same and uniform.
  • the bolt and the nut are installed in two ways: 1.
  • the bolt passes through a third through hole having a larger aperture on a fixture mounting surface, and a first through hole of a test plate.
  • the second through hole of the other test plate, the fourth through hole with the smaller diameter on the other clamping surface, and then the nut and the bolt are fixed, and the diameter of the bolt cap of the bolt and the outer diameter of the nut are smaller than the first pass
  • the aperture of the hole and the third through hole, the diameter of the bolt cap and the outer diameter of the nut are larger than the aperture of the second through hole and the aperture of the fourth through hole; 2.
  • the nut is placed in the first through hole of the test plate, and the bolt is in turn Passing through a fourth through hole with a small aperture on the mounting surface of one fixture, a second through hole and a first through hole of the test plate, and a third through hole having a larger aperture on the other mounting surface, and then fixing the nut and the bolt
  • the outer diameter of the nut is smaller than the diameter of the first through hole and the third through hole, and the diameter of the bolt cap and the outer diameter of the nut are larger than the diameter of the second through hole.
  • the two test panels are round in the same size to ensure uniform deformation of the test panels during the drawing process.
  • step A it is preferable to first stack the two test plates together and then perform the drilling, because the positions and sizes of the through holes of the two test plates are the same, so that the drilling is beneficial to increase the speed, generally
  • the through holes on the test plate are 4-16, and the preferred solution is 8.
  • a second object of the present invention is to provide a jig for use in the above method for measuring the forward tensile strength of a solder joint, the jig having a mounting surface and a clamping end, the key being that the mounting surface of the jig is drilled
  • the through holes include a third through hole having a larger aperture and a fourth through hole having a smaller aperture, and the number of the third through hole and the fourth through hole are equal and spaced .
  • the aperture of the third through hole and the aperture of the fourth through hole are respectively equal to the aperture of the first through hole and the aperture of the second through hole.
  • the projection of the center of the clamp end of the clamp on the fixture mounting surface coincides with the center of the circumference of the through hole on the mounting surface to ensure that the solder joint position of the test board and the center of the clamp are on the same line.
  • the clamp end of the clamp has a threaded or non-slip pattern to facilitate the fixing of the clamp end of the clamp to the tensile end of the tensile tester.
  • the method for measuring the forward tensile strength of the solder joint does not need to stamp the test plate, and only needs to be drilled on the test plate to fix the plate and the clamp, thereby overcoming the unfavorable formability of the sheet metal part and the processing before the test.
  • the cumbersomeness of the sample and the unfavorable factors such as high cost make the solder joints in a uniform forward stretch state.
  • the measurement method is simple and easy to operate, and has high operability and accurate measurement.
  • Figure 1 is a front view of the test sheet in the method of the present invention: a method of positive tensile strength of a solder joint
  • Figure 2 is a front elevational view of the clamp of the method of the present invention for measuring: the forward tensile strength of the solder joint;
  • Figure 3 is a side view of the jig of the method of the present invention for measuring: the forward tensile strength of the solder joint;
  • Figure 4 is a schematic view showing the principle of the method for measuring the forward tensile strength of a solder joint according to the present invention
  • Fig. 5 is a schematic view showing the measurement of the method of the present invention: the method of positive tensile strength of a solder joint.
  • the method for measuring the forward tensile strength of a solder joint of the present invention comprises the following steps:
  • FIG. 1 As shown in Fig. 1, firstly, two circular test plates 1 of the same size are stacked concentrically, and then through holes of the same position and size are drilled on the two test plates 1, the through holes
  • the quantity is generally 4-16, this In the embodiment, the number of through holes is eight.
  • the through holes on each of the test sheets 1 are evenly distributed on a circumference, and the through holes include four first through holes 11 having a larger aperture and four second through holes 12 having a smaller aperture, the first pass The hole 11 and the second through hole 12 are arranged at intervals; the thickness of the test plate 1 is between 0.5 and 2.5 mm, and the surface is required to be smooth and flat, not rusted, flat and uniform in thickness;
  • FIG. 2 and FIG. 3 As shown in FIG. 2 and FIG. 3, two clamps 2 having a mounting surface 21 and a clamping end 22 are selected, and the positions and sizes of the through holes of the test plate are drilled on the mounting surfaces 21 of the two clamps respectively.
  • test plates 1 are stacked concentrically, and the first through hole 11 of one test plate and the second through hole 12 of the other test plate are kept concentric, and then the two test plates 1 are spot welded. Soldering, the solder joint is at the center of the circumference of the first through hole 11 and the second through hole 12;
  • the bolt 3 is sequentially passed through the third through hole 23 having a larger aperture of the clamp mounting surface, the first through hole 11 and the second through hole 12 of the test plate, and the aperture of the clamp mounting surface. a smaller fourth through hole 24, and then fixing the nut 4 to the bolt 3, wherein the diameter of the bolt cap of the bolt 3 and the outer diameter of the nut 4 are smaller than the diameter of the first through hole 11 and the third through hole 23 of the clamp mounting surface The diameter of the bolt cap of the bolt 3 and the outer diameter of the nut 4 are larger than the diameters of the second through hole 12 and the fourth through hole 24 of the clamp mounting surface;
  • the clamp 2 applied in the method for measuring the forward tensile strength of the solder joint has a mounting surface 21 and a clamping end 22, and the key point is that the mounting surface 21 of the clamp 2 is drilled in the same a plurality of through holes on the circumference, the through holes including a third through hole 23 having a larger aperture and a fourth through hole 24 having a smaller aperture, the number of the third through hole 23 and the fourth through hole 24 being equal and spaced arrangement.
  • the grip end 22 of the clamp 2 is threaded to facilitate the clamping end of the clamp to be secured to the tensile end of the tensile tester.
  • the above method for measuring the forward tensile strength of the solder joint does not require stamping of the test sheet, and only needs to be drilled on the test sheet to fix the sheet and the clamp, thereby overcoming the unfavorable formability of the sheet metal part and the processing test before the test. Unfavourable factors such as cumbersomeness and high cost make the solder joints in a uniform forward stretch state.
  • the measurement method is simple and easy to operate, and it has high operability and accurate measurement.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Analytical Chemistry (AREA)
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Abstract

本发明属于焊接测试技术领域，提供了一种测量焊点正向拉伸强度的方法及夹具，该方法不受材料本身成型性限制。该方法包括：首先在两块试验板材（1）上钻出位置及大小均相同的通孔，该试验板材（1）上通孔包括孔径较大的第一通孔（11）和孔径较小的第二通孔（12），均匀地分布于一个圆周上，第一通孔（11）和第二通孔（12）的数目相等并间隔排列。选取两个夹具（2），并分别在两个夹具（2）的安装面（21）上钻出与试验板材（1）的通孔的位置及大小均相同的通孔；再将两块试验板材（1）叠在一起进行点焊焊接，焊点在第一通孔（11）和第二通孔（12）所在圆周的圆心处，并利用螺栓（3）及螺母（4）分别将同侧的夹具（2）及试验板材（1）固定在一起；以一定的拉伸速度拉伸两个夹具（2），拉伸至试验板材（1）的焊点处断裂为止，记录试验数据并进行拉伸载荷——位移曲线分析。

Description

一种测量焊点正向拉伸强度的方法及夹具
技术领域
本发明属于焊接测试技术领域， 特别地， 涉及一种测量焊点正向拉伸强度的方法 及夹具。 背景技术
点焊具有质量轻、 静强度高、 可靠性好、 性能稳定和易于实现自动化等优点， 已 被现代汽车车身普遍采用为结构连接方法， 一般来说， 90%以上的轿车车身的焊接点 都会采用点焊。 车身焊点失效主要由于综合力的作用从而导致焊点开裂。 因此， 为保 证车身结构安全可靠， 考虑焊点能够承受的极值成为目前研究的重点。
目前点焊拉伸试验方法的研究比较少， 2001年申请的美国专利 "焊点结构分析方 法" 中 （申请号： US6186011B1 ), 将试验的板材切割成一定形状， 再经冲压模具将其 形状冲成或折弯成方盒状， 在其翻起的立边拐角处采用熔化焊进行焊接， 并将每一对 盒状试样的底面中心点焊到一起， 然后将加工好的夹具插入方盒中用紧固螺栓拧紧， 最后将试样放到拉伸试验机上进行拉伸， 直至试样点焊处断裂为止。 该方法基本能克 服焊点所在拉伸表面的变形不是均匀变形的缺陷， 但该方法有个很明显的缺陷： 它主 要是针对强度较低、 成型性较好的材料， 也就是说该申请专利中， 试验板材方盒形状 是通过冲压实现的， 因此， 需要成型性较好的材料才能实现。 但目前汽车已经普遍采 用高强度钢及超高强度的钢， 以实现轻量化的目的， 这些材料的成型性较差， 需通过 特殊处理才能实现成型。 如果直接冲压将无法实现方盒形状， 会给试验带来极大地困 难， 试验费用也会大大提高。 目前急需对当前的试验方法进行改进性探索和研究， 以 减少对材料本身成型性对试验的影响。 发明内容
本发明的第一个目的是提供一种测量焊点正向拉伸强度的方法， 能够不受材料本 身成型性限制， 准确地测量焊点正向拉伸强度。
本发明测量焊点正向拉伸强度的方法包括如下步骤：
A : 分别在两块试验板材上钻出位置及大小均相同的通孔， 其中每块试验板材上 的通孔均匀地分布于一个圆周上， 所述通孔包括孔径较大的第一通孔和孔径较小的第 二通孔， 第一通孔和第二通孔的数目相等并间隔排列；
B : 制作两个夹具， 所述的夹具具有与试验台拉伸端连接的夹持端和与试验板材 连接的安装面， 其中安装面上钻有与试验板材位置和大小均一致的通孔， 通孔包括第 三通孔和第四通孔， 第三通孔的孔径和第四通孔的孔径分别等于第一通孔的孔径和第 二通孔的孔径。
C: 将两块试验板材叠放在一起， 并使其中一块试验板材的第一通孔和另一块试 验板材的第二通孔保持同心， 然后将两块试验板材进行点焊焊接， 焊点在第一通孔和 第二通孔所在圆周的圆心处；
D: 利用螺栓及螺母分别将同侧的夹具及试验板材固定在一起；
E : 分别将两个夹具的夹持端固定于拉伸试验机的两个拉伸端上， 然后以 5
~10mm/min的拉伸速度缓慢加载， 拉伸至试验板材的焊点处断裂为止， 记录试验数据 并进行拉伸载荷一一位移曲线分析。
在上述测量方法中， 无须对试验板材进行冲压， 只需要在试验板材上钻孔即可实 现板材与夹具的固定， 从而进行拉伸试验， 因此不受材料本身成型性限制。 第一通孔 和第二通孔的数目相等并间隔排列，可以使试验板材在拉伸时所受的拉力相同并均匀。
在 D步骤中将试验板材与夹具固定时， 螺栓及螺母的安装有两种方式： 1、 螺栓 依次穿过一个夹具安装面上孔径较大的第三通孔、 一个试验板材的第一通孔和另一个 试验板材的第二通孔、 另一个夹具安装面上孔径较小的第四通孔， 然后将螺母与螺栓 固定， 此时螺栓的螺栓帽的直径和螺母的外径小于第一通孔与第三通孔的孔径， 螺栓 帽的直径和螺母的外径大于第二通孔的孔径和第四通孔的孔径； 2、将螺母放置于试验 板材的第一通孔中， 螺栓依次穿过一个夹具的安装面上孔径较小的第四通孔、 试验板 材的第二通孔和第一通孔、 另一个安装面上孔径较大的第三通孔， 然后将螺母与螺栓 固定， 此时螺母的外径小于第一通孔与第三通孔的孔径， 螺栓帽的直径和螺母的外径 大于第二通孔的孔径。
所述两块试验板材最好为大小相同的圆形， 以保证在拉伸过程中试验板材能够均 匀变形。
所述 A步骤中， 最好首先将两块试验板材叠放在一起， 然后再进行钻孔， 因为两 块试验板材的通孔位置及大小均相同， 因此， 这样钻孔有利于提高速度， 一般试验板 材上的通孔是 4-16个， 优选方案是 8个。
所述试验板材要求平整且厚度均匀， 厚度为 0.5-2.5mm， 以确保试验的准确性。 本发明的第二个目的是提供一种用于上述测量焊点正向拉伸强度的方法中所应 用的夹具， 该夹具具有安装面和夹持端， 关键在于所述夹具的安装面上钻有位于同一 个圆周上的多个通孔， 所述通孔包括孔径较大的第三通孔和孔径较小的第四通孔， 第 三通孔和第四通孔的数目相等并间隔排列。 第三通孔的孔径和第四通孔的孔径分别等 于第一通孔的孔径和第二通孔的孔径。
上述夹具的夹持端的中心在夹具安装面上的投影与安装面上的通孔所在圆周的 圆心重合， 以保证试验板材的焊点位置和夹具的中心在同一条直线上。
上述夹具的夹持端带有螺纹或防滑花纹， 以利于夹具的夹持端与拉伸试验机的拉 伸端固定。
本发明测量焊点正向拉伸强度的方法无须对试验板材进行冲压， 只需要在试验板 材上钻孔即可实现板材与夹具的固定， 因此克服了钣金件成型性不利和试验前的加工 试样的繁琐性及费用过高等不利因素， 使焊点处于均匀的正向拉伸状态。 该测量方法 简便易行， 可操作性强， 测量准确。 附图说明
图 1是本发明测: ：焊点正向拉伸强度的方法中的试验板材的正视图
图 2是本发明测: ：焊点正向拉伸强度的方法的夹具的正视图；
图 3是本发明测: ：焊点正向拉伸强度的方法的夹具的侧视图；
图 4是本发明测: ：焊点正向拉伸强度的方法的原理示意图；
图 5是本发明测: ：焊点正向拉伸强度的方法的测量示意图。
附图标记：
I . 试验板材 2.夹具 3.螺栓 4.螺母
II.第一通孔 12.第二通孔 21.安装面 22.夹持端
23.第三通孔 24. 第四通孔 具体实施方式
下面结合具体实施例和附图详细说明本发明。
本发明测量焊点正向拉伸强度的方法包括如下步骤：
A: 如图 1所示， 首先将两块大小相同的圆形试验板材 1 同心地叠放在一起， 然 后再在两块试验板材 1上钻出位置及大小均相同的通孔， 通孔的数量一般为 4-16， 本 实施例中， 通孔的数量为 8个。 其中每块试验板材 1上的通孔均匀地分布于一个圆周 上， 所述通孔包括四个孔径较大的第一通孔 11和四个孔径较小的第二通孔 12， 第一 通孔 11和第二通孔 12间隔排列； 试验板材 1的厚度在 0.5-2.5mm之间， 要求表面光 洁平整， 没有被锈蚀， 平整且厚度均匀；
B : 如图 2、 3所示， 选取两个具有安装面 21和夹持端 22的夹具 2， 并分别在两 个夹具的安装面 21上钻出与试验板材通孔的位置及大小均相同的第三通孔 23、 第四 通孔 24， 其中第三通孔 23的孔径与试验板材的第一通孔 11的孔径相同， 第四通孔 24 的孔径与试验板材的第二通孔 12的孔径相同；
C: 将两块试验板材 1同心地叠放在一起， 并使一块试验板材的第一通孔 11和另 一块试验板材的第二通孔 12保持同心， 然后将两块试验板材 1进行点焊焊接， 焊点在 第一通孔 11和第二通孔 12所在圆周的圆心处；
D : 如图 4、 5所示， 将螺栓 3依次穿过夹具安装面的孔径较大的第三通孔 23、 试验板材的第一通孔 11和第二通孔 12、 夹具安装面的孔径较小的第四通孔 24， 然后 将螺母 4与螺栓 3固定， 其中螺栓 3的螺栓帽的直径和螺母 4的外径小于第一通孔 11 及夹具安装面的第三通孔 23的孔径，螺栓 3的螺栓帽的直径和螺母 4的外径大于第二 通孔 12及夹具安装面的第四通孔 24的孔径；
E: 分别将两个夹具的夹持端 22 固定于拉伸试验机的两个拉伸端上， 然后以 5 ~10mm/min的拉伸速度缓慢加载， 拉伸至试验板材的焊点处断裂为止， 记录断裂时的 载荷及失效部位， 采集数据点并进行拉伸载荷一一位移曲线分析。
如图 2、 3所示， 上述测量焊点正向拉伸强度的方法中所应用的夹具 2具有安装 面 21和夹持端 22， 关键在于所述夹具 2的安装面 21上钻有位于同一个圆周上的多个 通孔， 所述通孔包括孔径较大的第三通孔 23和孔径较小的第四通孔 24， 第三通孔 23 和第四通孔 24的数目相等并间隔排列。
夹具 2的夹持端 22的中心在夹具安装面 21上的投影与安装面 21上的通孔所在 圆周的圆心重合， 以保证试验板材的焊点位置和夹具的中心在同一条直线上。 夹具 2 的夹持端 22带有螺纹， 以利于夹具的夹持端 22与拉伸试验机的拉伸端进行固定。
上述测量焊点正向拉伸强度的方法无须对试验板材进行冲压， 只需要在试验板材 上钻孔即可实现板材与夹具的固定， 因此克服了钣金件成型性不利和试验前的加工试 样的繁琐性及费用过高等不利因素， 使焊点处于均匀的正向拉伸状态。 该测量方法简 便易行， 可操作性强， 测量准确。

Claims

权利要求书
1. 一种测量焊点正向拉伸强度的方法， 其特征在于： 包括如下步骤：
A.分别在两块试验板材上钻出位置及大小均相同的通孔， 其中， 每块试验板材上 的通孔均匀地分布于一个圆周上， 所述通孔包括孔径较大的第一通孔和孔径较小的第 二通孔， 第一通孔和第二通孔的数目相等并间隔排列；
B.制作两个夹具， 所述的夹具具有与试验台拉伸端连接的夹持端和与试验板材连 接的安装面， 其中安装面上钻有与试验板材位置和大小均一致的通孔；
C.将两块试验板材叠放在一起， 使其中一块试验板材的第一通孔和另一块试验板 材的第二通孔保持同心， 然后将两块试验板材进行点焊焊接， 焊点在第一通孔和第二 通孔所在圆周的圆心处；
D.利用螺栓及螺母分别将两个夹具的安装面与同侧的试验板材固定在一起；
E.分别将两个夹具的夹持端固定于拉伸试验机的两个拉伸端上， 然后以 5 ~10mm/min的拉伸速度加载， 拉伸至试验板材的焊点处断裂， 记录试验数据并进行拉 伸载荷一一位移曲线分析。
2. 根据权利要求 1所述的测量焊点正向拉伸强度的方法， 其特征在于： 在所述 D 步骤中， 将螺栓依次穿过一个夹具的安装面上孔径较大的第三通孔、 试验板材上的第 一通孔、 第二通孔以及另一个夹具的安装面上孔径较小的第四通孔， 然后将螺母与螺 栓固定， 螺栓帽的直径与螺母的外径小于第一通孔与第三通孔的孔径， 螺栓帽的直径 与螺母的外径大于第二通孔的孔径与第四通孔的孔径。
3. 根据权利要求 1所述的测量焊点正向拉伸强度的方法， 其特征在于： 在所述 D 步骤中， 将螺母放置于试验板材的第一通孔中， 将螺栓依次穿过一个夹具的安装面上 孔径较小的第四通孔、 试验板材上的第二通孔、 第一通孔以及另一个夹具的安装面上 孔径较大的第三通孔， 然后将螺母与螺栓固定， 螺母的外径小于第一通孔的孔径， 螺 栓帽的直径和螺母的外径大于第二通孔的孔径与第四通孔的孔径。
4. 根据权利要求 1 至 3任一项所述的测量焊点正向拉伸强度的方法， 其特征在 于： 所述两块试验板材为大小相同的圆形。
5. 根据权利要求 1 至 3任一项所述的测量焊点正向拉伸强度的方法， 其特征在 于： 在所述 A步骤中， 首先将两块试验板材叠放在一起， 然后再进行钻孔。
6. 根据权利要求 1 至 3任一项所述的测量焊点正向拉伸强度的方法， 其特征在 于： 所述试验板材平整且厚度均匀， 厚度为 0.5-2.5mm。
7. 根据权利要求 1 至 3任一项所述的测量焊点正向拉伸强度的方法， 其特征在 于： 试验板材上的通孔是 4-16个。
8. 一种用于权利要求 1-7任一项所述的测量焊点正向拉伸强度的方法中的夹具， 夹具具有安装面和夹持端， 其特征在于： 安装面上钻有位于同一个圆周上的多个通孔， 通孔包括孔径较大的第三通孔和孔径较小的第四通孔， 第三通孔和第四通孔的数目相 等并间隔排列。
9. 根据权利要求 8所述的夹具， 其特征在于： 夹持端的中心在安装面上的投影与 安装面上的通孔所在圆周的圆心重合。
10. 根据权利要求 8或 9所述的夹具， 其特征在于： 夹持端带有螺纹或防滑花纹。
PCT/CN2011/076856 2010-07-06 2011-07-05 一种测量焊点正向拉伸强度的方法及夹具 WO2012003794A1 (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130095485A1 (en) * 2011-10-18 2013-04-18 Dow Agrosciences Llc Materials and Methods for Detecting the Aryloxyalkanoate Dioxygenase Gene (AAD-12) Containing Event pDAB4472-1606 in Plants
CN106289976A (zh) * 2016-08-15 2017-01-04 北京普莱德新能源电池科技有限公司 一种用于busbar焊点拉伸试验检测的装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101900651B (zh) * 2010-07-06 2012-10-03 奇瑞汽车股份有限公司 一种测量焊点正向拉伸强度的方法及夹具
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2351811A (en) * 1999-07-06 2001-01-10 Ford Global Tech Inc Method of analyzing spot welded structures
CN1942750A (zh) * 2004-04-13 2007-04-04 新日本制铁株式会社 点焊部的断裂预测装置、方法、计算机程序、及计算机可读记录介质
JP4133956B2 (ja) * 2003-10-22 2008-08-13 新日本製鐵株式会社 スポット溶接部の破断限界荷重の推定方法
CN101614637A (zh) * 2009-07-29 2009-12-30 奇瑞汽车股份有限公司 一种测量焊点拉伸强度的装置和试验方法
CN101900651A (zh) * 2010-07-06 2010-12-01 奇瑞汽车股份有限公司 一种测量焊点正向拉伸强度的方法及夹具

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100520343C (zh) * 2006-09-04 2009-07-29 北京工业大学 一种十字型点焊试样多向疲劳加载夹具装置
CN201355343Y (zh) * 2008-12-24 2009-12-02 中国航空工业第一集团公司北京航空制造工程研究所 用于涂层结合强度测试的拉伸试件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2351811A (en) * 1999-07-06 2001-01-10 Ford Global Tech Inc Method of analyzing spot welded structures
JP4133956B2 (ja) * 2003-10-22 2008-08-13 新日本製鐵株式会社 スポット溶接部の破断限界荷重の推定方法
CN1942750A (zh) * 2004-04-13 2007-04-04 新日本制铁株式会社 点焊部的断裂预测装置、方法、计算机程序、及计算机可读记录介质
CN101614637A (zh) * 2009-07-29 2009-12-30 奇瑞汽车股份有限公司 一种测量焊点拉伸强度的装置和试验方法
CN101900651A (zh) * 2010-07-06 2010-12-01 奇瑞汽车股份有限公司 一种测量焊点正向拉伸强度的方法及夹具

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130095485A1 (en) * 2011-10-18 2013-04-18 Dow Agrosciences Llc Materials and Methods for Detecting the Aryloxyalkanoate Dioxygenase Gene (AAD-12) Containing Event pDAB4472-1606 in Plants
CN106289976A (zh) * 2016-08-15 2017-01-04 北京普莱德新能源电池科技有限公司 一种用于busbar焊点拉伸试验检测的装置
CN106289976B (zh) * 2016-08-15 2023-06-23 北京普莱德新能源电池科技有限公司 一种用于busbar焊点拉伸试验检测的装置
CN113092259A (zh) * 2021-04-27 2021-07-09 昆山裕莱祥电子科技有限公司 连接线焊点拉伸测试装置

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