KR100422717B1 - Bending test method of TWB panel - Google Patents

Bending test method of TWB panel Download PDF

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Publication number
KR100422717B1
KR100422717B1 KR10-2000-0084811A KR20000084811A KR100422717B1 KR 100422717 B1 KR100422717 B1 KR 100422717B1 KR 20000084811 A KR20000084811 A KR 20000084811A KR 100422717 B1 KR100422717 B1 KR 100422717B1
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twb
bending test
welding
test method
plate
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KR10-2000-0084811A
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Korean (ko)
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KR20020055615A (en
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황진영
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현대자동차주식회사
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0023Bending
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/026Specifications of the specimen
    • G01N2203/0296Welds
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/04Chucks, fixtures, jaws, holders or anvils
    • G01N2203/0435Chucks, fixtures, jaws, holders or anvils modifying the type of the force applied, e.g. the chuck transforms a compressive machine for applying a bending test

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  • Physics & Mathematics (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 Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Laser Beam Processing (AREA)

Abstract

본 발명은 TWB판재의 굽힘시험 방법에 관한 것으로, 서로 다른 두께를 갖는 판재를 레이저 용접 또는 메쉬 심 용접으로 용접하여 얻어지는 TWB 부재의 용접 부위에 대해 굽힘 성형을 하되, 상기 용접 부위에는 보조 부재를 덧붙여서 하중이 용접 부위 중앙에 가해지도록 하는 것을 특징으로 하는 TWB판재의 굽힘시험 방법을 제공하는데 그 목적이 있다.The present invention relates to a bending test method of the TV plate, and to bend the welded portion of the TWB member obtained by welding a plate having a different thickness by laser welding or mesh seam welding, the auxiliary portion is added to the welding site An object of the present invention is to provide a bending test method for a TV sheet, characterized in that a load is applied to the center of the welded portion.

본 발명의 바람직한 구현예에서, 상기 보조 부재는 레이저 용접으로 용접된 편차진 만큼의 두께를 갖는 판재인 것을 특징으로 하는 TWB판재의 굽힘시험 방법을 제공하게 된다.In a preferred embodiment of the present invention, the auxiliary member is to provide a bending test method of the TV plate, characterized in that the plate having a thickness of the deviation welded by laser welding.

또한, 상기 보조 부재는 메쉬 심 용접으로 용접된 부위의 중심으로 양쪽에 등간격으로 설치된 지지대인 것을 특징으로 한다.In addition, the auxiliary member is characterized in that the support is installed at equal intervals on both sides to the center of the welded portion of the mesh seam welding.

Description

TWB판재의 굽힘시험 방법{Bending test method of TWB panel}Bending test method of TWB panel

본 발명은 TWB판재의 굽힘시험 방법에 관한 것으로, 더욱 상세하게는 서로 다른 두께를 갖는 TWB 판재에 보조 부재를 덧붙여서 굽힘 시험을 행함으로써, 용접 상태를 용이하게 확인할 수 있는 TWB판재의 굽힘시험 방법에 관한 것이다.The present invention relates to a bending test method of a TV plate, and more particularly, to a bending test method of a TV plate that can be easily confirmed by welding by adding an auxiliary member to a TWB plate having a different thickness. It is about.

일반적으로 차량의 새시와 같이 다양한 굴곡과 강성을 필요로 하는 경우 두께가 다른 판재를 성형한 다음 이를 레이저 용접이나 매쉬 심(mash seam) 용접을 통해 TWB 판재를 성형하여 사용하고 있다.In general, when various flexures and stiffnesses such as a chassis of a vehicle are required, TWB plates are formed by forming a sheet having a different thickness and then laser welding or mash seam welding.

이와 같이 제작된 TWB 판재는 전체 구조물에 대해서는 굽힘 시험을 통해 용접 부위에 대한 크랙 등의 발생되었는지를 검사하게 된다.The TWB sheet fabricated as described above is inspected for cracks on the welded part through the bending test for the entire structure.

첨부도면 도 1a은 두께가 다른 판재를 레이저 용접한 다음 용접 부위에 대해 수직으로 하중을 가해 굽힘 시험을 하면서 크랙 등의 발생과 같은 용접 상태를 확인하게 되며, 첨부도면 도 1b는 메쉬 심 용접을 한 TWB 판재에 대해서 용접 상태를 확인하는 상태를 보여주고 있다.Figure 1a is a laser welding a plate of different thickness and then applied a load perpendicular to the weld site to perform a bending test to check the welding conditions such as the occurrence of cracks, Figure 1b is a mesh seam welding The welding state of the TWB sheet is shown.

그러나, 기존과 같이 용접 부위에 대해 굽힘 시험을 통해 용접 상태를 확인하는 경우, 레이저 용접을 한 TWB 부재는 두께가 서로 다르기 때문에 하중을 가하게 되면 얇은 두께의 부재쪽으로 치우치게 되어 용접 부위에 대한 상태를 정확하게 확인할 수 없게 되어 이에 대한 개선이 필요하게 되었다.However, in case of checking the welding state through the bending test for the welded part as before, since the TWB member subjected to the laser welding has different thicknesses, when the load is applied, it is biased toward the thinner part, so that the state of the welded part is accurately corrected. This could not be verified and improvement was needed.

또한, 메쉬 심 용접을 한 경우 용접 부위에 하중을 가하게 되면 상술한 치우침이나 슬라이딩 현상이 일어나게 되어 데이타에 대한 신뢰도가 떨어지는 문제가 발생하였다.In addition, in the case of mesh seam welding, when the load is applied to the welded portion, the above-described skew or sliding occurs, thereby causing a problem of low reliability of data.

본 발명은 이러한 점을 감안하여 안출한 것으로, 서로 다른 두께를 갖는 판재를 레이저 용접 또는 메쉬 심 용접으로 용접하여 얻어지는 TWB 부재의 용접 부위에 대해 굽힘 성형을 하되, 상기 용접 부위에는 보조 부재를 덧붙여서 하중이 용접 부위 중앙에 가해지도록 하는 것을 특징으로 하는 TWB판재의 굽힘시험 방법을 제공하는데 그 목적이 있다.The present invention has been made in view of the above-mentioned, the bending of the welded portion of the TWB member obtained by welding the plate material having a different thickness by laser welding or mesh seam welding, the load by adding an auxiliary member to the welding portion An object of the present invention is to provide a bending test method for a TV sheet, which is to be applied to the center of the welded portion.

본 발명의 바람직한 구현예에서, 상기 보조 부재는 레이저 용접으로 용접된 편차진 만큼의 두께를 갖는 판재인 것을 특징으로 하는 TWB판재의 굽힘시험 방법을 제공하게 된다.In a preferred embodiment of the present invention, the auxiliary member is to provide a bending test method of the TV plate, characterized in that the plate having a thickness of the deviation welded by laser welding.

또한, 상기 보조 부재는 메쉬 심 용접으로 용접된 부위의 중심으로 양쪽에 등간격으로 설치된 지지대인 것을 특징으로 한다.In addition, the auxiliary member is characterized in that the support is installed at equal intervals on both sides to the center of the welded portion of the mesh seam welding.

도 1a는 레이저 용접 부위에 대한 TWB 판재의 굽힘 시험 방법을 보여주는 도면,Figure 1a is a view showing a bending test method of the TWB sheet for the laser welding site,

도 1b는 매쉬 심 용접 부위에 대한 TWB 판재의 굽힘 시험 방법을 보여주는 도면,Figure 1b is a view showing a bending test method of the TWB sheet for the mesh seam welded portion,

도 2a는 본 발명에 따르는 레이저 용접 부위에 대한 TWB 판재의 굽힘 시험 방법을 보여주는 도면,Figure 2a is a view showing a bending test method of the TWB sheet for the laser welding site according to the present invention,

도 3b는 본 발명에 따르는 매쉬 심 용접 부위에 대한 TWB 판재의 굽힘 시험 방법을 보여주는 도면,Figure 3b is a view showing a bending test method of the TWB sheet for the mesh seam welded portion according to the present invention,

[도면의 주요 부분에 대한 부호의 설명][Description of Symbols for Main Parts of Drawing]

10 : TWB 부재 20 : 보조 부재10: TWB member 20: auxiliary member

21 : 판재 22 : 지지대21: plate 22: support

이하, 첨부도면을 참조하여 본 발명의 구성 및 작용 효과를 상세하게 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and effect of the present invention.

첨부도면 도 2a는 본 발명에 따르는 레이저 용접 부위에 대한 TWB 판재의 굽힘 시험 방법을 보여주는 도면이고, 첨부도면 도 3b는 본 발명에 따르는 매쉬 심용접 부위에 대한 TWB 판재의 굽힘 시험 방법을 보여주는 도면이다.Figure 2a is a view showing a bending test method of the TWB sheet material for the laser welding site according to the present invention, Figure 3b is a view showing a bending test method of the TWB plate material for the mesh core welding site according to the present invention. .

여기서, 도면부호 10은 두께가 다른 2개의 판재가 용접된 TWB 부재를, 20은 보조 부재를 각각 나타낸다.Here, reference numeral 10 denotes a TWB member in which two plate materials having different thicknesses are welded, and 20 denotes an auxiliary member.

본 발명은 상기 TWB 부재(10)의 용접 부위에 대해 용접 상태나 불량 등을 확인하기 위해 행해지는 TWB 판재의 굽힘 시험 방법에 관한 것으로, 굽힘 시험 전에 두께가 다른 2개의 판재가 용접 부위에서 골고루 균형있게 굽혀질 수 있도록 보조부재(20)를 장착한 다음 굽힘 시험을 행하도록 한 것이다.The present invention relates to a bending test method of a TWB sheet material is performed to confirm the welding state or defects, etc. for the welded portion of the TWB member 10, two plates having different thicknesses before the bending test evenly balanced at the weld site The auxiliary member 20 is mounted so that it can be bent, and then a bending test is performed.

여기서, 상기 보조 부재(20)는 맞대기와 같은 방법으로 용접을 하는 레이저 용접인 경우 2개의 판재의 두께차만큼의 두께를 갖는 판재(21)를 사용하여 굽힘 시험을 하게 된다.In this case, the auxiliary member 20 is subjected to the bending test using the plate 21 having a thickness equal to the thickness difference between the two plates in the case of laser welding, which is welded by the same method as the butt.

즉, 상기 판재(21)는 두께가 얇은 판재 쪽에 덧대기 형태로 덧붙여서 TWB 부재(10)가 전체적으로 균등하게 이루어지게 한 다음 굽힘 시험을 행함으로써, TWB 부재(10)의 용접 부위가 균일하게 굽혀지게 되어 용접 부위에 대한 검사를 용이하게 할 수 있게 된다.That is, the plate 21 is added to the side of the thin plate in the form of a pad, so that the TWB member 10 is made evenly as a whole, and then subjected to a bending test, so that the welded portion of the TWB member 10 is bent uniformly. This facilitates inspection of the welded portion.

한편, 상기 보조부재(20)는 테두리가 경사져서 덧대기 형태로 용접을 하게 되는 메쉬 심 용접의 경우, 굽힘 시험을 하게 되면 용접 부위에서 슬라이딩 현상이 이루어나게 되는데, 이를 방지하기 위해 TWB 부재(10)의 용접 부위 중앙에서 등간격으로 지지대(22)를 설치하여 굽힘 시험을 하게 된다.On the other hand, the auxiliary member 20 is a mesh seam welding is welded in the form of a pad with the inclined rim, when the bending test is made a sliding phenomenon occurs in the welding site, to prevent this TWB member 10 At the center of the welded part of), the support 22 is installed at equal intervals to bend the test.

여기서, 상기 지지대(22)는 슬라이딩 되는 것을 막아 굽힘 시험을 통해 용접 부위에 대한 검사를 용이하고 정확하게 할 수 있게 된다.In this case, the support 22 is prevented from sliding so that inspection of the welded portion can be easily and accurately performed through a bending test.

즉, 상기 지지대(22)를 용접부의 센터를 중심으로 좌우에 등간격으로 설치하여 시험하게 되면 시험 초기에 굽힘부의 중앙이 두께가 얇은 쪽으로 치우치게 되며, 이 부분이 지지대(22)에 걸리게 되면 더이상 치우침이 발생하지 않고 그 상태에서 시험을 계속할 수 있게 된다. 결국, 시험편은 용접부 좌우의 지지대(22)를 중심으로 굽혀져서 용접부의 중심부가 굽힘부의 중심에 오는 것이 가능하게 되는 것이다.That is, when the support 22 is installed at equal intervals on the left and right sides of the center of the welded portion, the center of the bent portion is biased toward the thinner portion at the beginning of the test. The test can be continued in that state without this occurring. As a result, the test piece is bent around the support 22 on the left and right of the welded portion so that the center of the welded portion can come to the center of the bent portion.

따라서, 상기 보조 부재(20)는 레이저 용접 또는 메쉬 심 용접을 통해 제작된 TWB 부재(10)의 용접 부위에 대해 용접 상태나 불량 등을 용이하게 확인할 수 있게 된다.Therefore, the auxiliary member 20 can easily check the welding state or failure of the welding portion of the TWB member 10 produced through laser welding or mesh seam welding.

이상에서 본 바와 같이 본 발명은 서로 다른 두께를 갖는 판재를 레이저 용접 또는 메쉬 심 용접으로 용접하여 얻어지는 TWB 부재의 용접 부위에 대해 굽힘 성형을 하되, 상기 용접 부위에는 보조 부재를 덧붙여서 하중이 용접 부위 중앙에 가해지도록 하는 것을 특징으로 하는 TWB판재의 굽힘시험 방법을 제공함으로써 다음과 같은 효과를 얻게 된다.As described above, the present invention is to bend the welded portion of the TWB member obtained by welding a plate having a different thickness by laser welding or mesh seam welding, but the load is added to the welding site by adding an auxiliary member By providing a bending test method of the TV sheet, characterized in that to be applied to the following effects are obtained.

1) 단차진 TWB 부재를 구성하는 2개의 판재가 두께를 임의로 맞춰진 상태에서 굽힘 시험을 행하게 되며, 이에 따라 TWB 부재의 용접 부위를 중심으로 양측의 판재가 균일하게 휘어지게 되어 용접 부위에 대한 검사를 용이하게 할 수 있게 된다.1) The bending test is performed while the two plates constituting the stepped TWB member are arbitrarily adjusted in thickness. Accordingly, the plates on both sides are bent uniformly around the welded portion of the TWB member. It becomes easy to do it.

Claims (3)

삭제delete 삭제delete 서로 다른 두께를 갖는 판재를 레이저 용접 또는 메쉬 심 용접으로 용접하여 얻어지는 TWB 부재의 용접 부위에 대해 굽힘 성형을 하되, 상기 용접 부위에는 보조 부재를 덧붙여서 하중이 용접 부위 중앙에 가해지도록 하는 TWB판재의 굽힘시험 방법에 있어서,Bend the TWB plate to be welded to the welded area of the TWB member obtained by laser or mesh seam welding of different thicknesses, and attach the auxiliary member to the welded area so that the load is applied to the center of the welded area. In the test method, 상기 보조 부재는 메쉬 심 용접으로 용접된 부위의 중심으로 양쪽에 등간격으로 설치된 지지대인 것을 특징으로 하는 TWB판재의 굽힘시험 방법.The auxiliary member is a bending test method of the TV sheet, characterized in that the support is provided at equal intervals on both sides of the center of the welded portion of the mesh seam welding.
KR10-2000-0084811A 2000-12-29 2000-12-29 Bending test method of TWB panel KR100422717B1 (en)

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KR100422717B1 true KR100422717B1 (en) 2004-03-12

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KR20160076725A (en) 2014-12-23 2016-07-01 주식회사 포스코 Clamping apparatus and method of for specimen of stepped shape

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