JPH04299239A - Inspection of weld part - Google Patents
Inspection of weld partInfo
- Publication number
- JPH04299239A JPH04299239A JP3064765A JP6476591A JPH04299239A JP H04299239 A JPH04299239 A JP H04299239A JP 3064765 A JP3064765 A JP 3064765A JP 6476591 A JP6476591 A JP 6476591A JP H04299239 A JPH04299239 A JP H04299239A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- weld part
- welded
- cut surface
- inspection
- 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.)
- Withdrawn
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000007547 defect Effects 0.000 claims abstract description 12
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004040 coloring Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 13
- 238000005530 etching Methods 0.000 description 6
- 239000000975 dye Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000003758 nuclear fuel Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001044 red dye Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
Landscapes
- 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 Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、溶接部の検査方法に関
し、例えば原子燃料集合体部品等における溶接部の溶接
状態を容易に確認することのできる、破壊検査の一種で
ある溶接部の検査方法に関する。[Industrial Application Field] The present invention relates to a method for inspecting welds, which is a type of destructive inspection that allows for easy confirmation of the welding condition of welds in, for example, nuclear fuel assembly parts. Regarding the method.
【０００２】0002
【従来の技術と発明が解決しようとする課題】例えば原
子燃料集合体部品等における溶接部の欠陥を検査する際
には、通常、溶接部のＸ線透視検査、溶接部表面の色検
査（浸透深傷検査）及び溶接部の切断面の溶け込み検査
を併用している。このうち、溶け込み検査においては、
まず、溶接部を切断して樹脂中に埋め込むことにより検
査試料を作成する。そして、その試料を研磨し、さらに
エッチング処理し、顕微鏡を用いて溶接部の組織状況や
熱影響状況、溶接状況等を視覚により検査する。[Prior Art and Problems to be Solved by the Invention] For example, when inspecting welds for defects in nuclear fuel assembly parts, etc., it is common to use X-ray fluoroscopic inspection of the welds, color inspection (penetration) of the weld surfaces, etc. (deep flaw inspection) and penetration inspection of the cut surface of the welded part are used together. Among these, in penetration inspection,
First, a test sample is created by cutting the welded part and embedding it in resin. Then, the sample is polished, further subjected to etching treatment, and visually inspected using a microscope for the structural condition, thermal influence condition, welding condition, etc. of the welded part.
【０００３】上述した溶接に伴う熱影響としては、金属
組織の変質や、歪み等があり、やはり溶接時の欠陥か否
か紛らわしい場合が多い。さらに、元々の材料組織によ
るものとしては、その組織が不均一な場合には溶接不良
と間違える場合もある。[0003] The above-mentioned thermal effects associated with welding include alteration and distortion of the metal structure, and it is often unclear whether or not it is a defect during welding. Furthermore, if the structure is non-uniform due to the original material structure, it may be mistaken for a welding defect.
【０００４】また、研磨による影響としては、研磨傷等
があり、溶接時の研磨によるクラックと紛らわしい。さ
らに、エッチング処理では、酸により研磨面を処理する
が、その処理時間が長すぎるとエッチング液の溶け出し
が多くなって研磨面の凹凸が著しくなり、一方、処理時
間が短かすぎるとエッチング効果が不十分になって組織
面が不鮮明になる等、処理のばらつきが大きい。[0004] Further, the effects of polishing include polishing scratches, which may be confused with cracks caused by polishing during welding. Furthermore, in the etching process, the polished surface is treated with acid, but if the treatment time is too long, the etching solution will dissolve more and the polished surface will become noticeably uneven.On the other hand, if the treatment time is too short, the etching effect will be reduced. There are large variations in processing, such as the tissue surface becoming unclear due to insufficient chromatography.
【０００５】上述した溶接部の欠陥の有無の確認は、溶
接用の前処理加工の跡の有無、巣の有無、クラックや不
良組織の有無等を判断することにより行うが、顕微鏡を
用いた検査作業では上述した種々の要因から適確な判断
を行うことができないのが実情である。[0005] Confirmation of the presence or absence of defects in the welded part as described above is carried out by determining the presence or absence of welding pretreatment marks, the presence or absence of cavities, and the presence or absence of cracks or defective structures. The reality is that it is not possible to make accurate judgments during work due to the various factors mentioned above.
【０００６】そこで、本発明は、検査方法を改良し、溶
接部の欠陥の有無を適確に実行できる溶接部の検査方法
を提供することを目的とするものである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to improve the inspection method and provide a method for inspecting a welded part, which can accurately determine the presence or absence of defects in the welded part.
【０００７】[0007]
【課題を解決するための手段】本発明に係る溶接部の検
査方法は、試料の溶接部を切断してこの溶接部を含む切
断面を露出させる工程と、切断面における溶接部に対し
浸透性のある着色液を塗布した後塗布領域を拭き取る工
程と、前記塗布領域に前記着色液の吸い出し作用を有す
る吸い出し液を塗布する工程とを具備し、前記塗布領域
に吸い出される着色液の分布状態により溶接部の欠陥の
有無を検査するようにしたものである。[Means for Solving the Problems] The method for inspecting a weld according to the present invention includes a step of cutting a weld of a sample to expose a cut surface including the weld, and a step of exposing the weld to the weld at the cut surface. a step of wiping off the application area after applying a certain colored liquid, and a step of applying a suction liquid having a suction effect of the colored liquid to the application area, and a distribution state of the colored liquid sucked out to the application area. This method is designed to inspect the presence or absence of defects in welded parts.
【０００８】[0008]
【作用】上述した本発明に係る検査方法によると、試料
の溶接部を切断してこの溶接部を含む切断面を露出させ
、切断面における溶接部に対し浸透性のある着色液を塗
布した後、塗布領域を拭き取り、さらに、着色液の吸い
出し作用を有する吸い出し液を塗布して溶接部内に浸透
した着色液を吸い出してその分布状態により溶接部の欠
陥の有無を検査するようにしたものであるから、顕微鏡
を用いること無く肉眼により溶接部の欠陥の有無、即ち
、傷やクラック、組織不良等の有無を適確に判断できる
。[Operation] According to the above-described inspection method according to the present invention, the welded part of the sample is cut to expose the cut surface including the welded part, and a penetrating colored liquid is applied to the welded part on the cut surface. , the application area is wiped off, and a suction liquid that has the effect of sucking out the colored liquid is applied to suck out the colored liquid that has penetrated into the weld, and the presence or absence of defects in the weld is inspected based on the distribution state of the colored liquid. Therefore, the presence or absence of defects in the welded portion, ie, the presence or absence of scratches, cracks, structural defects, etc., can be accurately determined with the naked eye without using a microscope.
【０００９】[0009]
【実施例】以下に、本発明の実施例を詳細に説明する。EXAMPLES Examples of the present invention will be described in detail below.
【００１０】例えば、図１に示すような核燃料集合体の
部品１，２を溶接してその検査を行う場合を例にとって
以下の説明を行う。The following explanation will be given by taking as an example a case where parts 1 and 2 of a nuclear fuel assembly as shown in FIG. 1 are welded and then inspected.
【００１１】溶接すべき部品１，２の接合面の端部に前
処理としてＶ字状を呈する切欠部３を設ける。次に、切
欠部３に対し、図示しない溶接機を用いて溶接処理を実
施し、図２に示すように溶接部４を形成する。さらに、
溶接部４により溶接された前記部品１，２を金属カッタ
ーにより切断し、図３に示すように前記溶接部４を端部
に有する切断面５を露出させた状態の試料を作成する。[0011] As a pretreatment, a notch 3 having a V-shape is provided at the end of the joint surfaces of the parts 1 and 2 to be welded. Next, a welding process is performed on the notch 3 using a welding machine (not shown) to form a welded part 4 as shown in FIG. 2. moreover,
The parts 1 and 2 welded by the welding part 4 are cut with a metal cutter to create a sample in which a cut surface 5 having the welding part 4 at the end is exposed as shown in FIG.
【００１２】この試料の切断面５における溶接部４の表
面に金属に対する浸透性が強く、かつ、赤色に着色され
た着色液Ｌ１ を塗布（図４にクロス斜線で示す。）し
、この着色液を溶接部４の内部に浸透させる。[0012] A colored liquid L1, which has strong permeability to metals and is colored red, is applied to the surface of the welded part 4 on the cut surface 5 of this sample (indicated by cross hatching in FIG. 4). permeate into the inside of the welded part 4.
【００１３】ここで、この着色液は、トルエン、キシレ
ン、石油系混合溶剤等の溶剤と染料とを混合することに
より調製される。染料は溶接部を染着することができる
ことを要し、アゾ系赤色染料が好適である。[0013] Here, this colored liquid is prepared by mixing a dye and a solvent such as toluene, xylene, or a petroleum-based mixed solvent. The dye must be able to dye the welded area, and azo red dyes are preferred.
【００１４】前記染料の着色液中における濃度は、通常
、２重量％である。[0014] The concentration of the dye in the coloring liquid is usually 2% by weight.
【００１５】前記着色液Ｌ１ としては、表１に示すマ
ークテック（株）製の高純度のもの（商品名ＵＰ−Ｔ）
を用いる。なお、このような着色液で染着される溶接部
は、ニッケル系あるいは鉄系の金属で形成されている。The coloring liquid L1 is a high-purity liquid manufactured by Marktec Co., Ltd. (trade name UP-T) shown in Table 1.
Use. Note that the welded portion dyed with such a colored liquid is formed of a nickel-based or iron-based metal.
【００１６】[0016]
【表１】[Table 1]
【００１７】また、同社の商品名Ｐ−ＳＴと称される表
２に示す組成のものやＵＰ−ＳＴと称される前記表１の
ＵＰ−Ｔと同じ組成のものを用いることもできる。[0017] Further, a product having the composition shown in Table 2 called P-ST by the same company, or a product having the same composition as UP-T in Table 1 called UP-ST can also be used.
【００１８】[0018]
【表２】[Table 2]
【００１９】前記溶接部４に前記着色液Ｌ１ を浸透さ
せた後、この溶接部４の表面を軽く拭き取り、次に、こ
の表面に下記表３に示す組成のマークテック（株）製の
白色の吸い出し液（商品名ＵＤ−Ｔ）Ｌ２ を塗布する
。After the colored liquid L1 is infiltrated into the welded part 4, the surface of the welded part 4 is lightly wiped, and then a white solution manufactured by Marktec Co., Ltd. having the composition shown in Table 3 below is applied to this surface. Apply suction liquid (trade name UD-T) L2.
【００２０】本願発明で使用される吸い出し液は、染着
液中の染料を表面にうかび上がらせることができるとい
う機能を有する限り、種々の組成の液で形成することが
できる。前記機能を満たす吸い出し液としては、炭酸塩
微粉末と珪酸微粉末とを溶剤に分散して調製された混合
液を挙げることができる。ここで、前記炭酸塩微粉末の
吸い出し液中の濃度は、通常、６〜７重量％であり、珪
酸微粉末の吸い出し液中の濃度は、通常、３〜５重量％
である。The suction liquid used in the present invention can be formed of liquids having various compositions as long as it has the function of allowing the dye in the dyeing liquid to rise to the surface. An example of the suction liquid that satisfies the above-mentioned functions is a mixed liquid prepared by dispersing fine carbonate powder and fine silicic acid powder in a solvent. Here, the concentration of the fine carbonate powder in the suction liquid is usually 6 to 7% by weight, and the concentration of the fine silicic acid powder in the suction liquid is usually 3 to 5% by weight.
It is.
【００２１】[0021]
【表３】[Table 3]
【００２２】また、白色の吸い出し液Ｌ２ としては、
同社の商品名ＵＤ−ＳＴ又はＤ−ＳＴと称される表４お
よび表５に示す組成のものを用いることもできる。[0022] Furthermore, as the white suction liquid L2,
It is also possible to use the compositions shown in Tables 4 and 5, which are named UD-ST or D-ST by the same company.
【００２３】[0023]
【表４】[Table 4]
【００２４】[0024]
【表５】[Table 5]
【００２５】このような白色の吸い出し液Ｌ２ を溶接
部４の表面に塗布することにより、溶接部４内に巣やク
ラック等がある場合にはその部分に残存していた前記着
色液Ｌ１ が図５に示すように白色の吸い出し液Ｌ２
を塗布した溶接部４の表面に染み出しその領域が赤色に
変色するので、これにより、溶接部４内の巣やクラック
等の欠陥の存在を顕微鏡等を用いること無く肉眼で明確
に検査することができる。By applying such white suction liquid L2 to the surface of the welded part 4, if there are cavities or cracks in the welded part 4, the colored liquid L1 remaining in those parts is removed. As shown in 5, the white suction liquid L2
It seeps onto the surface of the welded part 4 to which it has been applied, and the area turns red, making it possible to clearly inspect the presence of defects such as cavities and cracks in the welded part 4 with the naked eye without using a microscope or the like. Can be done.
【００２６】この後、溶接部の４の表面を鎖状炭化水素
液により洗浄することで一連の検査が終了する。Thereafter, the series of inspections is completed by cleaning the surface of the welded portion 4 with a chain hydrocarbon liquid.
【００２７】尚、本実施例方法によれば、既述した従来
の研磨、エッチング処理を行う方法に比べても略同等の
検査精度を得ることができることが確認でき、従来方法
の代替えが可能であることが判明した。又、切断面のエ
ッチング処理と併用しても良い。[0027] It has been confirmed that the method of this example can provide almost the same inspection accuracy as the conventional method of polishing and etching described above, and can be used as an alternative to the conventional method. It turns out that there is something. Further, it may be used in combination with etching treatment of the cut surface.
【００２８】本発明は、上述した実施例に限定されるも
のではなく、その要旨の範囲内で種々の変形が可能であ
る。例えば、本発明は、核燃料集合体の部品の溶接部の
検査に適用する場合のほか、種々の産業分野で行われて
いる溶接箇所の検査にも適用可能である。The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the invention. For example, the present invention is applicable not only to the inspection of welded parts of parts of nuclear fuel assemblies, but also to the inspection of welded parts carried out in various industrial fields.
【００２９】[0029]
【発明の効果】以上詳述した本発明によれば、浸透性を
有する着色液及び吸い出し作用を有する吸い出し液を用
いることにより、簡略かつ適確に溶接部の欠陥の有無を
検査することが可能な検査方法を提供することができる
。[Effects of the Invention] According to the present invention as detailed above, by using a penetrating colored liquid and a sucking liquid having a sucking action, it is possible to simply and accurately inspect the presence or absence of defects in a welded part. It is possible to provide a unique testing method.
【図１】本発明の実施例方法を適用する部品の溶接前の
状態を示す部分斜視図である。FIG. 1 is a partial perspective view showing a state before welding of a component to which an embodiment method of the present invention is applied.
【図２】本発明の実施例方法を適用する部品の溶接後の
状態を示す部分斜視図である。FIG. 2 is a partial perspective view showing the state of parts after welding to which the embodiment method of the present invention is applied.
【図３】本発明の実施例方法を適用する部品の溶接部を
含む切断面を示す断面図である。FIG. 3 is a cross-sectional view showing a cut surface including a welded part of a component to which the embodiment method of the present invention is applied.
【図４】図３に示す切断面の溶接部に着色液を塗布した
状態の平面図である。4 is a plan view of a state in which a colored liquid is applied to the welded portion of the cut surface shown in FIG. 3; FIG.
【図５】図３に示す切断面における着色液の染み出し状
態を示す平面図である。FIG. 5 is a plan view showing how the colored liquid oozes out from the cut surface shown in FIG. 3;
１ 部品 ２ 部品 ３ 切欠部 ４ 溶接部 Ｌ１ 着色液 Ｌ２ 吸い出し液 1 Parts 2 Parts 3 Notch 4 Welded part L1 Coloring liquid L2 Suction liquid
Claims (1)
含む切断面を露出させる工程と、切断面における溶接部
に対し浸透性のある着色液を塗布した後、塗布領域を拭
き取る工程と、前記塗布領域に前記着色液の吸い出し作
用を有する吸い出し液を塗布する工程とを具備し、前記
塗布領域に吸い出される着色液の分布状態により溶接部
の欠陥の有無を検査することを特徴とする溶接部の検査
方法。1. A step of cutting a welded portion of a sample to expose a cut surface including the welded portion, and a step of applying a penetrating colored liquid to the welded portion on the cut surface and then wiping off the applied area. , comprising a step of applying a suction liquid having a suction effect of the colored liquid to the application area, and inspecting the presence or absence of defects in the welded part based on the distribution state of the colored liquid sucked out to the application area. Inspection method for welded parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3064765A JPH04299239A (en) | 1991-03-28 | 1991-03-28 | Inspection of weld part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3064765A JPH04299239A (en) | 1991-03-28 | 1991-03-28 | Inspection of weld part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04299239A true JPH04299239A (en) | 1992-10-22 |
Family
ID=13267614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3064765A Withdrawn JPH04299239A (en) | 1991-03-28 | 1991-03-28 | Inspection of weld part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04299239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530767A (en) * | 2018-05-24 | 2019-12-03 | 核动力运行研究所 | A kind of control rod drive mechanism remote auto penetrating inspection device and method |
-
1991
- 1991-03-28 JP JP3064765A patent/JPH04299239A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530767A (en) * | 2018-05-24 | 2019-12-03 | 核动力运行研究所 | A kind of control rod drive mechanism remote auto penetrating inspection device and method |
| CN110530767B (en) * | 2018-05-24 | 2024-06-11 | 核动力运行研究所 | Remote automatic penetration inspection device and method for control rod driving mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980514 |