JP6868458B2 - A quick-drying developer for penetrant inspection and a penetrant test method using the developer - Google Patents
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- 238000001035 drying Methods 0.000 title claims description 46
- 238000007689 inspection Methods 0.000 title claims description 20
- 238000010998 test method Methods 0.000 title claims description 5
- 238000012360 testing method Methods 0.000 claims description 32
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 9
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 8
- 239000001095 magnesium carbonate Substances 0.000 claims description 8
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 8
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- 230000007547 defect Effects 0.000 description 34
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000576 coating method Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000002612 dispersion medium Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
本発明は、各種金属部材表面に存在する開口欠陥部を検出する浸透探傷試験に使用する速乾式現像剤に関する。詳しくは、該現像剤は、塗布直後から現像剤層が白くて隠蔽性があるため、現像剤の乾燥を待たずに明瞭な欠陥指示模様が現れて開口欠陥部を検出することができると共に、塗布した箇所が目視により判別できるから作業効率に優れ、また、乾燥後には微細な開口欠陥部を検出でき、しかも、乾燥時間が短い浸透探傷試験用速乾式現像剤に関する。 The present invention relates to a quick-drying developer used in a penetrant inspection to detect an opening defect existing on the surface of various metal members. Specifically, since the developer layer of the developer is white and has a concealing property immediately after application, a clear defect indication pattern appears without waiting for the developer to dry, and an opening defect can be detected. The present invention relates to a quick-drying developer for penetrant inspection, which is excellent in work efficiency because the applied portion can be visually identified, can detect fine opening defects after drying, and has a short drying time.
周知の通り、浸透探傷試験は、非破壊検査方法の一種でありJIS Z 2343-1〜6に規格化されている。その基本的態様は、染料を溶解させた浸透性の強い染色浸透液や蛍光浸透液（以下「浸透液」と言う）を被検査物表面に付着させて開口欠陥部に浸透させた後、当該欠陥部内に浸透せずに被検査物表面に残留している余剰浸透液を除去し、次いで、当該被検査物表面に炭酸マグネシウム粉末や炭酸カルシウム粉末などの無機質白色粉末（当業者間では「現像剤」と呼ばれている）の薄層（以下「現像剤層」と言う）を形成し、該現像剤層によって開口欠陥部内に浸透している浸透液を現像剤層表面に吸い出させることによって欠陥指示模様を現出させ、染色浸透液の場合は自然光又は白色光の下、デジタルカメラ等で撮影した画像を観察し、また、蛍光浸透液の場合はブラックライト等の照射の下、デジタルカメラ等で撮影した画像を観察して当該欠陥指示模様によって開口欠陥部の存在・位置を検出するというものである。 As is well known, the penetrant inspection is a kind of non-destructive inspection method and is standardized in JIS Z 2343-1-6. The basic embodiment is that a highly permeable dye penetrant or fluorescent penetrant (hereinafter referred to as "penetration solution") in which a dye is dissolved is adhered to the surface of an object to be inspected and permeated into an opening defect portion. The excess penetrant remaining on the surface of the object to be inspected without penetrating into the defective part is removed, and then an inorganic white powder such as magnesium carbonate powder or calcium carbonate powder is removed on the surface of the object to be inspected. A thin layer (hereinafter referred to as "developer layer") of (called "agent") is formed, and the penetrant permeating into the opening defect portion is sucked out to the surface of the developer layer by the developer layer. In the case of dye penetrant, observe the image taken with a digital camera, etc. under natural light or white light, and in the case of fluorescent penetrant, under irradiation with black light, etc., digitally. By observing an image taken with a camera or the like and detecting the presence / position of an opening defect portion by the defect instruction pattern.
浸透探傷試験における現像とは、現像剤層に含まれる粒子（以下「現像材粒子」と言う）間に空間が存在することにより生じる毛細管現象によって、開口欠陥部に残留した浸透液を現像剤層表面に吸い出し、吸い出された際の模様で欠陥部を検出しようとするものである。
したがって、染色浸透液を使用した浸透探傷試験において、明瞭な欠陥指示模様を得るには現像剤層には白さ、即ち、隠蔽性が求められる。
Development in the penetrant inspection is the development of the penetrant remaining in the opening defect due to the capillary phenomenon caused by the existence of a space between the particles contained in the developer layer (hereinafter referred to as "developing material particles"). It sucks out to the surface and tries to detect the defective part by the pattern when sucked out.
Therefore, in the penetrant inspection test using the dye penetrant, the developer layer is required to have whiteness, that is, concealing property, in order to obtain a clear defect indication pattern.
しかし、通常、現像剤は、塗布した直後は白く現れず、乾燥するにつれ白く現れるから、塗布した現像剤が乾燥するまで探傷作業を待たなければならない。 However, normally, the developer does not appear white immediately after application, but appears white as it dries. Therefore, it is necessary to wait for the flaw detection operation until the applied developer dries.
また、乾燥するまで塗布した箇所が分かり難く、塗布直後に被検査物表面が完全に塗布されているかどうか判別することは困難である。 In addition, it is difficult to know where the coating is applied until it dries, and it is difficult to determine whether the surface of the object to be inspected is completely coated immediately after coating.
そこで、分散媒に揮発性が非常に高いシクロヘキサンを使用した乾燥時間が短い超速乾式現像剤が開発されている。 Therefore, an ultra-quick-drying developer that uses cyclohexane, which has extremely high volatility, as a dispersion medium and has a short drying time has been developed.
しかしながら、超速乾式は乾燥が早いため、塗布作業を素早く行わなければならず、また、均一な現像剤層を形成し難いといった問題がある。 However, since the ultra-quick-drying type dries quickly, there is a problem that the coating operation must be performed quickly and it is difficult to form a uniform developer layer.
現像剤層が均一でなく、現像材粒子間の隙間が偏って存在したり、隙間が全く存在しない部分ができると、浸透液が偏って吸い出されたり、全く吸い出されなかったりするため、正確に開口欠陥部の位置や大きさを検出することが難しくなる。 If the developer layer is not uniform and the gaps between the developing material particles are unevenly present or if there is a portion where there is no gap at all, the penetrant may be sucked out unevenly or not sucked out at all. It becomes difficult to accurately detect the position and size of the opening defect.
また、いかに速乾式であったとしても、乾燥するまで待たなければ探傷作業が行えず、また、塗布直後は白くないから、塗布した箇所を判別し難いといった問題もある。 Further, no matter how quick-drying it is, there is a problem that the flaw detection work cannot be performed unless it is waited until it dries, and it is difficult to identify the applied portion because it is not white immediately after application.
そこで、現像剤を塗布した直後から現像剤層が白く、乾燥を待たずに明瞭な欠陥指示模様が現れて開口欠陥部を検出することができると共に、塗布直後から塗布した箇所を目視により正確に判別でき、また、乾燥した後は均一な現像剤層になって微細な開口欠陥部を検出することができる現像剤の開発が望まれている。 Therefore, the developer layer is white immediately after the developer is applied, a clear defect indication pattern appears without waiting for drying, and an opening defect can be detected, and the area where the developer is applied can be visually accurately observed immediately after the application. It is desired to develop a developer that can be discriminated and that after drying, it becomes a uniform developer layer and can detect minute opening defects.
特許文献１には、主成分がアルコールで、窒素含有非イオン性界面活性剤を含む分散媒に珪酸微粉末や炭酸マグネシウムを分散させた現像剤が開示されている。
特許文献１に開示される現像剤は、分散剤が揮発性のアルコールであるから乾燥時間は短いが、塗布した直後は白く現れずに隠蔽性がないから、塗布した現像剤が乾燥するまで探傷作業を行うことができず、また、乾燥するまで塗布した箇所の判別が難しいといった問題がある。
The developer disclosed in
本発明者らは、前記諸問題点を解決することを技術的課題とし、試行錯誤的な数多くの試作・実験を重ねた結果、酸化チタン6〜20重量％と炭酸カルシウム及び／又は炭酸マグネシウム6〜20重量％とが揮発性有機溶剤に分散してなる浸透探傷試験用速乾式現像剤であれば、塗布直後から現像剤層が白くて隠蔽性があるため、染色浸透液を用いた浸透探傷試験において、現像剤の乾燥を待たずに明瞭な欠陥指示模様が現れて開口欠陥部を検出することができると共に、塗布した箇所が目視により判別できて作業効率に優れ、また、乾燥後には微細な開口欠陥部を検出でき、しかも乾燥時間の短い速乾式現像剤になるという刮目すべき知見を得て、前記技術的課題を達成したものである。
The present inventors have set the technical problem to solve the above-mentioned problems, and as a result of repeated trial and error trials and experiments, 6 to 20% by weight of titanium oxide and calcium carbonate and / or
前記技術的課題は、次のとおり本発明によって解決できる。 The technical problem can be solved by the present invention as follows.
本発明は、浸透探傷試験用速乾式現像剤であって、前記現像剤は、酸化チタン６重量％以上、かつ、２０重量％以下と炭酸カルシウム及び／又は炭酸マグネシウム６重量％以上、かつ、２０重量％以下とがシクロヘキサンとアルコールとからなる揮発性有機溶剤に分散してなり、前記現像剤における前記シクロヘキサンの含有量が２０重量％以上、かつ、６８重量％未満である浸透探傷試験用速乾式現像剤である。
The present invention is a quick-drying developer for a penetration flaw detection test, wherein the developer is
また、本発明は、分散剤及び／又は樹脂を添加した浸透探傷試験用速乾式現像剤である。 Further, the present invention is a quick-drying developer for penetrant inspection, to which a dispersant and / or a resin is added.
また、本発明は、前記アルコールが、エタノール、イソプロピルアルコール、ノルマルプロピルアルコールから選択される１以上からなる浸透探傷試験用速乾式現像剤である。
Further, the present invention is pre-Symbol alcohol is ethanol, isopropyl alcohol, penetrant for speed dry developer comprising one or more selected from n-propyl alcohol.
また本発明は、前記浸透探傷試験用速乾式現像剤を用いて現像することを特徴とする浸透探傷試験方法である。 Further, the present invention is a penetrant inspection method characterized by developing using the quick-drying developer for penetrant inspection.
また本発明は、前記浸透探傷試験方法であって、前記浸透探傷試験用速乾式現像剤が乾燥する前に探傷することを特徴とする浸透探傷試験方法である。 Further, the present invention is the penetrant inspection test method, characterized in that the quick-drying developer for the penetrant inspection test detects flaws before it dries.
本発明における速乾式現像剤は、酸化チタンを含有するので、塗布直後から現像剤層が白くて隠蔽性がある。
したがって、染色浸透液を用いた浸透探傷試験において、塗布直後から明瞭な欠陥指示模様が得られるから、乾燥を待たずに開口欠陥部を検出することができる。
Since the quick-drying developer in the present invention contains titanium oxide, the developer layer is white immediately after application and has a concealing property.
Therefore, in the penetrant inspection test using the dye penetrant, a clear defect indication pattern can be obtained immediately after application, so that the opening defect portion can be detected without waiting for drying.
また、炭酸カルシウム及び／又は炭酸マグネシウムも含有するから乾燥後は微細な開口欠陥部も正確に検出できる。 In addition, since it also contains calcium carbonate and / or magnesium carbonate, fine opening defects can be accurately detected after drying.
また、塗布直後から現像剤層が白いので、既に塗布した箇所と未だ塗布していない箇所を目視により正確に判別できるから、塗布作業性に優れる。 In addition, since the developer layer is white immediately after coating, it is possible to visually and accurately distinguish between a portion that has already been coated and a portion that has not yet been coated, resulting in excellent coating workability.
また、分散媒が揮発性有機溶剤であるから、乾燥時間が短くて液だれが起こり難く、乾燥後は均一な現像剤層になる。 Further, since the dispersion medium is a volatile organic solvent, the drying time is short and dripping is unlikely to occur, and a uniform developer layer is formed after drying.
本発明に係る現像剤は酸化チタン、及び、炭酸カルシウム及び／又は炭酸マグネシウムからなる現像材粒子が、揮発性有機溶剤に分散する現像剤である。 The developing agent according to the present invention is a developing agent in which developing material particles composed of titanium oxide and calcium carbonate and / or magnesium carbonate are dispersed in a volatile organic solvent.
本発明に係る速乾式現像剤が含有する酸化チタンは６〜２０重量％であることが好ましい。 The titanium oxide contained in the quick-drying developer according to the present invention is preferably 6 to 20% by weight.
６重量％未満であると、均一な薄膜を形成し難く、また、２０重量％を超えて含有させたとしても隠蔽性は変わらず、また、分散性が悪くなって均一な現像剤層になり難いからである。 If it is less than 6% by weight, it is difficult to form a uniform thin film, and even if it is contained in excess of 20% by weight, the hiding property does not change, and the dispersibility deteriorates to form a uniform developer layer. Because it is difficult.
本発明が含有する炭酸カルシウム及び／又は炭酸マグネシウムは６〜２０重量％であることが好ましい。 The calcium carbonate and / or magnesium carbonate contained in the present invention is preferably 6 to 20% by weight.
６重量％未満であると、均一な薄膜を形成し難く、また、２０重量％を超えて含有させたとしても隠蔽性は変わらず、また、分散性が悪くなって均一な現像剤層になり難いからである。 If it is less than 6% by weight, it is difficult to form a uniform thin film, and even if it is contained in excess of 20% by weight, the hiding property does not change, and the dispersibility deteriorates to form a uniform developer layer. Because it is difficult.
本発明に係る速乾式現像剤には、現像材粒子の分散性を向上させるために、分散剤を添加することができる。 A dispersant can be added to the quick-drying developer according to the present invention in order to improve the dispersibility of the developing material particles.
添加できる分散剤は特に限定されるものではないが、トーホール（登録商標）N２２０（東邦化学工業株式会社製）DISPERBYK(登録商標）-111（ビックケミー・ジャパン株式会社製）等が好適である。 The dispersant that can be added is not particularly limited, but Toho Hall (registered trademark) N220 (manufactured by Toho Chemical Industry Co., Ltd.) DISPERBYK (registered trademark) -111 (manufactured by Big Chemie Japan Co., Ltd.) and the like are preferable.
分散剤の添加量は０．５〜５．０重量％が好ましい。 The amount of the dispersant added is preferably 0.5 to 5.0% by weight.
本発明に係る現像剤には、樹脂を添加することができる。欠陥指示模様が広がる、いわゆるニジミを抑制して、明瞭な欠陥指示模様が得られるからである。 A resin can be added to the developer according to the present invention. This is because a clear defect indication pattern can be obtained by suppressing so-called bleeding in which the defect indication pattern spreads.
添加できる樹脂は特に限定されるものではないが、ヒドロキシプロピルセルロース、アルキルアセタ−ルカポリビニルアルコ−ルが好適である。 The resin that can be added is not particularly limited, but hydroxypropyl cellulose and alkyl acetylcapolyvinyl alcohol are preferable.
樹脂の添加量は０．１〜２．０重量％が好ましい。 The amount of the resin added is preferably 0.1 to 2.0% by weight.
本発明に係る揮発性有機溶剤はシクロヘキサンとアルコールとからなる。アルコールは、エタノール、イソプロピルアルコール、ノルマルプロピルアルコールから選択される１以上であることが好ましい。現像材粒子の分散性が良く、また、速乾性であるので、現像剤が液だれし難く、均一な現像剤層を形成できるからである。 The volatile organic solvent according to the present invention comprises cyclohexane and alcohol. The alcohol is preferably one or more selected from ethanol, isopropyl alcohol, and normal propyl alcohol. This is because the developer particles have good dispersibility and are quick-drying, so that the developer does not easily drip and a uniform developer layer can be formed.
特にシクロヘキサンの含有量が２０〜６８重量％未満であることが好ましい。速乾性が高くなるからである。
In particular, the content of cyclohexane is preferably less than 20 to 68 % by weight. Quick-drying is from a high Kunar.
本発明における速乾式現像剤を使用した浸透探傷試験方法の一形態を示す。 A form of a penetrant inspection test method using a quick-drying developer in the present invention is shown.
まず、染色浸透液を被検査物表面に塗布して開口欠陥部に浸透させる（浸透処理）。 First, the dyeing penetrant is applied to the surface of the object to be inspected and permeated into the opening defect (penetration treatment).
次いで、当該被検査物表面を水道水又はエコチェック（登録商標）ER−ST（マークテック株式会社製）等の洗浄剤を使用し、ウエスによって開口欠陥部内に浸透せずに被検査物表面に残っている余剰浸透液を洗浄・除去する（洗浄処理）。 Next, tap water or a cleaning agent such as Ecocheck (registered trademark) ER-ST (manufactured by MARKTEC Corporation) is used on the surface of the object to be inspected, and the surface of the object to be inspected is not permeated into the opening defect by a waste cloth. Cleans and removes the remaining excess penetrant (cleaning treatment).
被検査物表面に本発明おける速乾式現像剤を塗布した直後、現像剤が乾燥する前に自然光又は白色光の下、デジタルカメラ等で撮影して観察することにより開口欠陥部の数、大きさ、形などを検出する。 Immediately after applying the quick-drying developer of the present invention to the surface of the object to be inspected, the number and size of aperture defects are observed by photographing with a digital camera or the like under natural light or white light before the developer dries. , Shape, etc. are detected.
50μｍ以上の開口欠陥部であれば、現像剤を塗布した直後に検出できる。 If the aperture defect is 50 μm or more, it can be detected immediately after the developer is applied.
したがって、５０〜１０００μｍの開口欠陥部の検出が目的である自動車部品（鋳造部品）等であれば、現像剤直後から探傷作業を行えるので、試験時間を短縮することができる。 Therefore, for automobile parts (cast parts) or the like whose purpose is to detect an opening defect portion of 50 to 1000 μm, the flaw detection operation can be performed immediately after the developer, so that the test time can be shortened.
また、現像剤が乾燥するまで待って自然光又は白色光の下、デジタルカメラ等で撮影して観察することにより開口欠陥部の数、大きさ、形などを検出することもできる。 It is also possible to detect the number, size, shape, etc. of the aperture defect portion by taking a picture with a digital camera or the like and observing it under natural light or white light after waiting until the developer dries.
現像剤が乾燥するまで待てば、30μｍ以上の開口欠陥部の検出を行うことができる。 If the developer waits until it dries, it is possible to detect an opening defect portion of 30 μm or more.
本発明を実施例及び比較例を挙げてより詳しく説明するが、本発明はこれに限定されるものではない。 The present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.
表１記載の原料を用いて、本発明の実施例及び比較例の速乾式現像剤を作製した。組成（単位はｇ）は表３及び表４に示したとおりである。 Using the raw materials shown in Table 1, quick-drying developers of Examples and Comparative Examples of the present invention were prepared. The composition (unit: g) is as shown in Tables 3 and 4.
実施例及び比較例の速乾式現像剤を使用して感度試験を行った。 Sensitivity tests were performed using the quick-drying developers of Examples and Comparative Examples.
試験片は、JIS Z ２３４３−３に規定されているタイプ３対比試験片とタイプ１対比試験片５０μｍを使用した。
As the test pieces, a
視認試験にはタイプ３対比試験片を用い、また、検出率にはタイプ１対比試験片を用いた。
A
染色浸透液はエコチェック（登録商標）EP−ST、除去剤はエコチェックER−ST（いずれもマークテック株式会社製）を使用した。 Ecocheck (registered trademark) EP-ST was used as the dye penetrant, and Ecocheck ER-ST (both manufactured by MARKTEC Corporation) was used as the remover.
試験は次のとおり行った。 The test was conducted as follows.
＜浸透処理＞
刷毛塗り法により試験片に染色浸透液を塗布し5分間浸透させた。
＜除去処理＞
ウエスにより拭き取った後、除去剤を付けたウエスにより拭き取った。
＜現像処理＞
現像剤をエアーガンにより塗布した。
＜観察＞
白色光の下でデジタルカメラにより、現像直後と10分経過後を撮影した。
<Penetration treatment>
The dye penetrant was applied to the test piece by the brush coating method and allowed to permeate for 5 minutes.
<Removal process>
After wiping with a waste cloth, it was wiped with a waste cloth with a removing agent.
<Development processing>
The developer was applied with an air gun.
<Observation>
The images were taken with a digital camera under white light immediately after development and after 10 minutes had passed.
実施例及び比較例の各速乾式現像剤を表２記載の項目について評価を行った。 Each quick-drying developer of Examples and Comparative Examples was evaluated for the items shown in Table 2.
隠蔽性については、市販の現像剤（エコチェックED−ST マークテック株式会社製）と比較した。 The concealing property was compared with a commercially available developer (manufactured by Ecocheck ED-ST MARKTEC Corporation).
分散性は３０分間放置した後ハードケーキの形成があったものを×、それ以外を○として評価した。 The dispersibility was evaluated as x for those having hard cake formation after being left for 30 minutes, and as ◯ for others.
総合評価は現像剤として使用可能なものを○、不可能なものを×として評価した。 In the comprehensive evaluation, those that could be used as a developer were evaluated as ◯, and those that could not be evaluated as x.
実施例の結果を表３、比較例の結果を表４に示す。 The results of the examples are shown in Table 3, and the results of the comparative examples are shown in Table 4.
表３及び表４、図１〜８に示すとおり、本発明における速乾式現像剤であれば、現像剤を塗布した直後から開口欠陥部が検出でき、また、現像剤が乾いた後にはさらに微細な開口欠陥部も検出できることが証明された。 As shown in Tables 3 and 4, and FIGS. 1 to 8, in the case of the quick-drying developer of the present invention, an opening defect can be detected immediately after the developer is applied, and finer after the developer dries. It was proved that a large opening defect can be detected.
本発明に係る現像剤は、塗布直後から現像剤層が白くて隠蔽性があるため、染色浸透液を用いた浸透探傷試験において、乾燥を待たずに開口欠陥部を検出することができると共に、塗布した箇所が視認できるから作業効率に優れ、また、乾燥後には微細な開口欠陥部を検出でき、しかも乾燥時間の短い速乾式現像剤であって、５０μｍ以上の開口欠陥部を検出する浸透探傷試験においては特に試験時間を短縮できる速乾式現像剤である。
よって、本発明の産業上の利用可能性は高いと言える。
Since the developer layer of the developer according to the present invention is white and has a concealing property immediately after application, it is possible to detect an opening defect portion without waiting for drying in a penetrant inspection test using a dye penetrant. It is excellent in work efficiency because the applied part can be visually recognized, and it is a quick-drying developer that can detect fine opening defects after drying and has a short drying time, and it is a penetrant inspection that detects opening defects of 50 μm or more. In the test, it is a quick-drying developer that can shorten the test time.
Therefore, it can be said that the industrial applicability of the present invention is high.
Claims (5)
The penetrant inspection test method according to claim 4, wherein the quick-drying developer for a penetrant inspection test detects a flaw before it dries.
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| CN111308866B (en) * | 2020-04-01 | 2023-08-22 | 烟台核晶陶瓷新材料有限公司 | Developing solution for crucible detection and preparation method and application method thereof |
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| JPS5563745A (en) * | 1978-11-09 | 1980-05-14 | Kashiwa Kagaku Kogyo:Kk | Developer as flaw detecting agent |
| JPS626147A (en) * | 1985-07-03 | 1987-01-13 | Nippon Oil & Fats Co Ltd | Developer for liquid penetrant inspection |
| JP2805233B2 (en) * | 1990-02-01 | 1998-09-30 | マークテック株式会社 | Curable penetrant and curable developer used in solvent removal test method |
| JPH0854356A (en) * | 1994-08-10 | 1996-02-27 | Nippon Oil & Fats Co Ltd | Water detecting type flaw detecting agent and its method |
| JP2000298104A (en) * | 1999-04-15 | 2000-10-24 | Nof Corp | Quick dry developer for penetrant test |
| CN1444037A (en) * | 2003-04-21 | 2003-09-24 | 上海远航助剂材料厂 | Imaging liquor for inspection and preparation method |
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