JPH02293654A - Fluorescent penetrant inspection method by using dry process developer and developer contained in aerosol container used in this method - Google Patents
Fluorescent penetrant inspection method by using dry process developer and developer contained in aerosol container used in this methodInfo
- Publication number
- JPH02293654A JPH02293654A JP11646889A JP11646889A JPH02293654A JP H02293654 A JPH02293654 A JP H02293654A JP 11646889 A JP11646889 A JP 11646889A JP 11646889 A JP11646889 A JP 11646889A JP H02293654 A JPH02293654 A JP H02293654A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- aerosol
- fine powder
- fluorescent
- penetrant
- 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.)
- Granted
Links
- 239000000443 aerosol Substances 0.000 title claims abstract description 42
- 238000007689 inspection Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title abstract description 31
- 238000001035 drying Methods 0.000 title abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 35
- 230000007547 defect Effects 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 230000000149 penetrating effect Effects 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000003380 propellant Substances 0.000 claims description 15
- 238000010998 test method Methods 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims description 6
- 230000002950 deficient Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000011161 development Methods 0.000 description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 239000007850 fluorescent dye Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000009659 non-destructive testing Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- -1 polyoxyethylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、乾式現像剤を用いる蛍光浸透探傷試験方法及
び該方法に使用するエアゾール雷入り現像剤に関するも
のであり、簡便な現像処理によって実施できるとともに
適用範囲が拡大できる新規な乾式現像剤を用いる蛍光浸
透深傷試験方法を提供するものである。Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a fluorescent penetrant testing method using a dry developer and an aerosol lightning developer used in the method. The purpose of the present invention is to provide a fluorescent penetration deep scratch test method using a new dry developer that can expand the scope of application.
［従来の技術］
周知の通り、各種機械部品の表面や構造物の溶接部表面
等に存在する微細なクラックや微小のビンホールの如き
表面開口欠陥部（以下、欠陥部という）の深傷に適用さ
れている非破壊検査法の一種とＬ４ｒＪＩＳＺ ２３
４３−１９８２，ｌ：規定されている浸透深傷試験方法
がある．
この試験方法は、上掲ＪＩＳ規格に見られるように、現
像方法及び浸透液の種類によって分類されており、現像
方法の種類からは「乾式現像剤（乾燥した状態で使用す
る白色微粉末の現像剤）を用いる方法」、「湿式現像剤
（水に分敗させて使用する白色微粉末の現像剤）を用い
る方法」、「速乾式現像剤（白色微粉末を揮発性の有機
溶剤に分散させた現像剤）を用いる方法」及び「現像剤
を用いない方法」に別けられており、浸透液の種類から
は「蛍光浸透深傷試験」と「染色浸透探傷試験」とに大
別されている．
そして、「（社）日本非破壊検査協会 編・浸透深傷試
験！・（社）日本非破壊検査協会 ｌ９８９年２月１日
発行・ｌ５、５２〜５５頁」 （以下、文献■という）
にも「・・・・・・乾式現像法・・・・・・この方法は
蛍光浸透深傷試験にのみ適用できる方法である・・・・
・・（文献■：５５頁３〜１２行）」と記載されている
通り、゛［乾式現像剤を用いる方法］は「蛍光浸透探傷
試験」と組み合せて実施されている．
今、乾式現像剤を用いる蛍光浸透探傷試験方法の具体的
態様を示せば次の通りである．即ち、蛍光浸透液（蛍光
染料を溶解した浸透性の大きい液体）を検査物表面に適
用して該浸透液を欠陥部内に浸透させた後、欠陥部内に
浸透せずに検査物表面に残留している余剰の蛍光浸透液
を除去し、更に検査物表面を乾燥させ、次に乾式現像剤
である乾燥した状態で使用する白色無機微粉末を当該検
査物表面に適用して前記欠陥部内に浸透している蛍光浸
透液を吸い出させるとともに吸い出された蛍光浸透液に
よって前記白色無機微粉末を前記欠陥部に付着させるこ
とによって欠陥指示模様を現出させ、紫外線灯（ブラッ
クライト）照射下において検査物表面を観察することに
よって欠陥部の存在・位置を検知する探傷試験方法であ
る．
そして、乾式現像剤の適用に当っては、萌出文献に「・
・・・・・この現像剤は比重が軽い礪めて粒子の細かい
白色微粉末を使用しているため適用方法によっては空気
中に飛散し、人体に吸収され易いので適切な防塵対策を
施す必要がある．現像の方法としては、浸漬法か、完全
密閉できる容器の中で現像剤を飛散させる方法によって
行われる・・・・・・（文献■：５５頁４〜７行）」と
記載されている通り、乾式現像剤を充填した容器内に検
査物を浸漬する浸漬法又は乾式現像剤と検査物とを密閉
容器に入れ空気を吹き込み現像剤を飛敗させるエアーフ
ライング法が常用されている．
上記の通りの乾式現像剤を用いる蛍光浸透深傷試験方法
は、前出文献に［・・・・・・現像剤が欠陥の部分にだ
け付着するため時間が経過しても指示模様の拡大すなわ
ちにじみが少なく、欠陥指示模様が鮮明なため試験面上
での欠陥の大きさ、近接した欠陥等の判定が容易である
．また、この現像法は試験終了後現像剤を除去し易い利
点を持っている・・・・・・（文献！＝５２頁２２〜２
５行）と記載されている通りの長所を備えている．
［発明が解決しようとする課題］
しかし、前記の乾式現像剤を用いる蛍光浸透深傷試験方
法には、その乾式現像剤の適用法に起因して、次の通り
の短所がある．
即ち、前記浸漬法並びに前記エアーフライング法は、い
ずれも検査物を容器内に入れることを必須としており、
検査物が大型である場合には、これに比例した大きさの
容器が必要となるので、検査物が大型になればなるほど
、これに見合う容器を準備することが困難となる．また
、大型部品や構造物等の部分探傷を行なうことは殆んど
不可能である．
本発明は、上記短所を改良し、検査物が大型部品である
場合は勿論、大型部品や構造物等の部分深傷にも適用で
きる乾式現像剤を用いる蛍光浸透深傷試験方法を提供す
ることを技衛的課題とする。[Prior art] As is well known, this method is applied to deep scratches such as surface opening defects (hereinafter referred to as defects) such as minute cracks and minute holes that exist on the surfaces of various mechanical parts and the surfaces of welded parts of structures. A type of non-destructive testing method and L4rJISZ 23
43-1982, l: There is a prescribed penetration depth test method. As seen in the above JIS standard, this test method is classified according to the development method and type of penetrating liquid. ``Method using a wet developer (a white fine powder developer that is dissolved in water)'', ``Quick-drying developer (a white fine powder dispersed in a volatile organic solvent) The method is divided into two methods: a method using a developer) and a method that does not use a developer. Based on the type of penetrant, it is roughly divided into two types: a fluorescent penetrant deep flaw test and a dye penetrant flaw test. ．． And, "Edited by Japan Nondestructive Inspection Association, Penetrating Deep Flaw Test!, Japan Nondestructive Inspection Association, Published February 1, 1989, 15, pp. 52-55" (hereinafter referred to as Document ■)
"...Dry development method...This method can only be applied to fluorescent penetration deep scratch testing...
... (Literature ■: p. 55, lines 3 to 12)'', the method using a dry developer is carried out in combination with a ``fluorescent penetrant test.'' The specific aspects of the fluorescent penetrant testing method using a dry developer are as follows. That is, after applying a fluorescent penetrant liquid (a liquid with high permeability in which a fluorescent dye is dissolved) to the surface of the inspection object and causing the penetrating liquid to penetrate into the defect, it remains on the surface of the inspection object without penetrating into the defect. The excess fluorescent penetrating liquid is removed, the surface of the object to be inspected is further dried, and then a dry developer, white inorganic fine powder used in a dry state, is applied to the surface of the object to be inspected and penetrates into the defect area. At the same time, the white inorganic fine powder is adhered to the defect by the sucked-out fluorescent penetrating liquid, thereby making a defect indicating pattern appear, and then exposing it to an ultraviolet lamp (black light). This is a flaw detection test method that detects the presence and location of defects by observing the surface of the test object. Regarding the application of dry-type developers, the following literature states:
...This developer uses a white fine powder with a light specific gravity and fine particles, so depending on how it is applied, it may scatter into the air and be easily absorbed by the human body, so appropriate dust prevention measures must be taken. There is. The development method is carried out by immersion or by scattering the developer in a completely airtight container... (Literature ■: p. 55, lines 4 to 7). The immersion method, in which the test object is immersed in a container filled with dry developer, or the air-flying method, in which the dry developer and test object are placed in a sealed container and air is blown in to blow away the developer, are commonly used. The fluorescence penetrating deep scratch test method using a dry developer as described above is described in the above-mentioned literature [... Since the developer adheres only to the defective area, the indicated pattern does not expand over time. Because there is little bleeding and the defect indication pattern is clear, it is easy to judge the size of defects on the test surface and nearby defects. In addition, this developing method has the advantage that the developer can be easily removed after the test... (Literature! = 52 pages 22-2
It has the advantages as described (line 5). [Problems to be Solved by the Invention] However, the fluorescence penetration deep scratch test method using the dry developer described above has the following disadvantages due to the method of application of the dry developer. That is, both the immersion method and the air flying method require the test object to be placed in a container.
If the object to be inspected is large, a container of proportionate size is required, so the larger the object to be inspected, the more difficult it becomes to prepare a suitable container. Furthermore, it is almost impossible to perform partial flaw detection on large parts or structures. The present invention improves the above disadvantages and provides a fluorescence penetrating deep scratch testing method using a dry developer that can be applied not only to large parts to be inspected, but also to partial deep scratches in large parts and structures. is a technical and sanitary issue.
本発明者は、上記課題を達成するために、多くの試験、
研究を重ねた結果、検査物を容器に入れることなく乾式
現像剤が適用できる技術手段を確立して課題達成に成功
したものである．［課題を達成するための手段及び作用
］即ち、蛍光浸透液を検査物の表面に適用して該浸透液
を表面開口欠陥部内に浸透させた後、欠陥部内に浸透せ
ずに検査物表面に残留している余剰の蛍光浸透液を除去
し、更に検査物表面を乾燥させ、次に白色無機微粉末を
乾燥状態で当該検査物表面に適用して前記欠陥部内に浸
透している蛍光浸透液を吸い出させるとともに吸い出さ
れた蛍光浸透液によって該白色無機微粉末を前記欠陥部
に付着させることによって欠陥指示模様を現出させる乾
式現像剤を用いる蛍光浸透探傷試験方法において、エア
ゾール用液化ガス噴射剤と白色無機微粉末とをエアゾー
ル缶に封入して前記検査物表面に向けて噴射し、エアゾ
ール用液化ガス噴射剤は気化させ、白色無機微粉末のみ
を乾燥状態で当該検査物表面に適用するという技術手段
を採ることによって、検査物を容器に入れることなく乾
式現像剤を適用することが可能となり、前記課題が達成
できるのである．
次に、本発明の構成を作用とともに詳しく説明する．
先ず、本発明において最も重要な乾式現像剤の適用態様
について述べる．
本発明においては、エアゾール用液化ガス噴射剤と白色
無機微粉末とをエアゾール缶に封入して用いるが、前者
には周知のフロン−１ ２′、ＬＰＧ，ＤＥＭ等を用い
、後者には浸透深傷法における現像剤として常用されて
いる粒径ｌ〜１０μ国のタルク、ケイ酸、炭酸マグネシ
ウム、炭酸カルシウムを用いる．
両者をエアゾール缶に封入するに際し、配合割合は白色
無機微粉末１ｇに対してエアゾール用液化ガス噴射剤ｌ
ＯＮｌ５１ｍｌとすることが好ましく、充填圧は３．５
〜５． ５ｋｇ／Ｃｍ″とすることが好ましい．封入手
段は常法に従がえばよく、エアゾール缶も市販品を使用
すればよい．
上記のエアゾール用液化ガス噴射剤と上記の白色無機微
粉末とをＪ上記の配合割合並びに上記の充填圧で封入し
てなるエアゾール缶入り現像剤は、缶中では液化ガス噴
射剤（液体）中に白色無磯微粉末が分敗した状態にある
．これをノズルから検査物表面に向けて噴射させると液
化ガス噴射剤（液体）と白色無機微粉末とがともに霧状
で噴出するが、液化ガス噴射剤は検査物表面に到る簡に
気化してしまい、検査物表面には乾燥した状態にある白
色無磯微粉末のみが、換言すれば乾式現像剤が適用され
る．ノズル口から検査物表面までの距離は２０〜４０ｃ
ａ＋程度とすることが好ましい。In order to achieve the above object, the present inventor conducted many tests,
As a result of repeated research, they succeeded in achieving their goal by establishing a technical means that allows the use of dry developer without placing the test object in a container. [Means and actions for achieving the object] That is, after applying a fluorescent penetrating liquid to the surface of the object to be inspected and allowing the penetrating liquid to penetrate into the surface opening defect, the liquid penetrates into the surface of the object to be inspected without penetrating into the defect. The remaining excess fluorescent penetrant liquid is removed, the surface of the inspection object is dried, and then a white inorganic fine powder is applied to the surface of the inspection object in a dry state to remove the fluorescent penetrant liquid that has penetrated into the defect area. In a fluorescent penetrant testing method using a dry developer that causes a defect indicating pattern to appear by sucking out the white inorganic fine powder and adhering the white inorganic fine powder to the defective part using the sucked out fluorescent penetrating liquid, an aerosol liquefied gas is used. A propellant and white inorganic fine powder are sealed in an aerosol can and sprayed toward the surface of the test object, the aerosol liquefied gas propellant is vaporized, and only the white inorganic fine powder is applied in a dry state to the surface of the test object. By adopting this technical method, it becomes possible to apply a dry developer without placing the test object in a container, and the above-mentioned problem can be achieved. Next, the configuration of the present invention will be explained in detail along with its operation. First, the application aspect of the dry developer, which is the most important aspect of the present invention, will be described. In the present invention, a liquefied gas propellant for aerosol and white inorganic fine powder are sealed in an aerosol can, and the former uses well-known Freon-1 2', LPG, DEM, etc., and the latter has a deep penetration depth. Talc, silicic acid, magnesium carbonate, and calcium carbonate with particle sizes of 1 to 10 μm, which are commonly used as developers in the scratch method, are used. When sealing both in an aerosol can, the mixing ratio is 1 g of white inorganic fine powder to 1 liter of liquefied gas propellant for aerosol.
It is preferable to set ONl to 51 ml, and the filling pressure is 3.5
~5. 5 kg/Cm". The enclosing means may be according to a conventional method, and the aerosol can may be a commercially available product. The above liquefied gas propellant for aerosol and the above white inorganic fine powder are The aerosol canned developer sealed with the above compounding ratio and the above filling pressure is in a state in which a white solid fine powder is separated into the liquefied gas propellant (liquid) in the can. When sprayed toward the surface of the object to be inspected, both the liquefied gas propellant (liquid) and white inorganic fine powder are ejected in the form of mist, but the liquefied gas propellant easily vaporizes when it reaches the surface of the object to be inspected. Only dry white, solid, fine powder, in other words, a dry developer, is applied to the surface of the object.The distance from the nozzle opening to the surface of the object to be inspected is 20 to 40 cm.
It is preferable to set it to about a+.
上記した適用時における白色無機微粉本と検査物表面と
の関係は、前記のエアーフライング法によって乾式現像
削が検査物表面に通用された時と全く同様であり、検査
物表面に適用された乾燥した状態にある白色無機微粉末
は欠陥部に浸透している蛍光浸透液を吸い出すとともに
吸い出した蛍光浸透液によって該欠陥部に付着し、白色
無機微粉末による欠陥指示模様が形成される．尚、必要
に応じて、検査物に振動を与えるか或いは軽く空気を吹
きつけることによって、蛍光浸透液に接触していない白
色＝＊微粉末を検査物表面から脱落させ除去することが
できる．
ところで、前記速乾式現像剤が「（社）日本非破壊検査
協会 編・浸透探傷試験ＩＩ・ （社）日本非破壊検査
協会 １９８９年２月１日発行・ｌ６、３６頁」 （以
下、文献ＩＩという）に「・・・・・・速乾式現像法・
・・・・・揮発性の高い有機溶剤に白色微粉末の現像剤
を分敗させた懸濁液を使用する方法で・・・・・・この
方法は、試験体の表面に塗布した現像剤がすばやく乾燥
し、湿式現像法の場合と同様、現像剤の！！！膜面を形
成し欠陥指示模様を形成する・・・・・・現像剤を適用
する方法としては、エアゾール製品によるスプレー法を
採用している・・・・・・（文献Ｈ ： ｌ ６頁１４
〜２１行）」と記載されている通り、エアゾール用噴射
剤とともにエアゾール缶に封入して用いられる場合があ
るので、これと本発明におけるエアゾール缶入り現像剤
との相違を明確にして置くと次の通りである．
即ち、本発明におけるエアゾール缶入り現像剤は、上記
の通り、エアゾール用液化ガス噴射剤と白色無機微粉末
とからなるが、速乾式現像剤がエアゾール缶に封入して
用いられる場合には、文献ＩＩに「・・・・・・現像剤
は溶剤と無機粉末がＦＪＩｍされた状態でエアゾール缶
中に加圧封入されている・・・・・・（文献ＩＩ ：
３ ６頁２４行）」と記載されている通り、エアゾール
用噴射剤、白色ＷＡ機微粉末及び揮発性溶剤からなって
いる．また、本発明におけるエアゾール缶入り現像剤は
、上記の通り、その使用時には、白色無機微粉末のみが
検査物表面に適用されるが、速乾式現像剤がエアゾール
缶に封入して用いられる場合には、その使用時には、白
色無機微粉末と揮発性溶剤とが検査物表面に適用され、
検査物表面において揮発性溶剤が気化した後に白色無磯
微粉木からなる膜面が形成される。The relationship between the white inorganic fine powder and the surface of the object to be inspected during the above application is exactly the same as when dry development was applied to the surface of the object to be inspected using the air flying method. The white inorganic fine powder in this state sucks out the fluorescent penetrating liquid that has penetrated into the defect, and the sucked out fluorescent penetrating liquid adheres to the defect, forming a defect indicating pattern by the white inorganic fine powder. If necessary, the white = *fine powder that has not come into contact with the fluorescent penetrant can be removed from the surface of the test object by vibrating the test object or by lightly blowing air on it. By the way, the quick-drying developer is described in "Japan Nondestructive Testing Association, Edited by Penetrant Testing II, Japan Nondestructive Testing Association, Published February 1, 1989, p. 16, 36" (hereinafter referred to as Document II). ``...quick-drying development method,
...This method uses a suspension of a fine white powder developer in a highly volatile organic solvent. dries quickly, and as with wet development, the developer! ! ! Forming a film surface and forming a defect indicating pattern... As a method of applying the developer, a spray method using an aerosol product is adopted... (Reference H: l 6 p. 14)
~ line 21), it may be used by being sealed in an aerosol can together with an aerosol propellant, so to clarify the difference between this and the developer packaged in an aerosol can according to the present invention: It is as follows. That is, as described above, the aerosol canned developer of the present invention is composed of a liquefied gas propellant for aerosol and white inorganic fine powder, but when a quick-drying developer is used by being enclosed in an aerosol can, there is a method described in the literature. II: ``...The developer is pressurized and sealed in an aerosol can with a solvent and an inorganic powder mixed together...'' (Reference II:
3, page 6, line 24), it consists of an aerosol propellant, white WA fine powder, and a volatile solvent. In addition, as mentioned above, when using the aerosol canned developer of the present invention, only the white inorganic fine powder is applied to the surface of the inspection object. When used, white inorganic fine powder and volatile solvent are applied to the surface of the test object.
After the volatile solvent evaporates on the surface of the test object, a film surface made of white sand-free fine powder wood is formed.
次に、本発明は、上記した乾式現像剤の適用態様を除け
ば、従来法と同様の構成、作用である。Next, the present invention has the same structure and operation as the conventional method except for the application mode of the dry developer described above.
即ち、蛍光浸透液としては、周知の石油系混合溶剤、グ
リコールエーテル及びポリオキシエチレンアルキルアリ
ルエーテル等からなる浸透性の大きい液体に油溶性蛍光
染料やペンゾトリアゾール型油溶性蛍光染料が約１．５
重置％程度添加されたもの一市販品としては例えば、ス
パーグロー浸透探傷剤ＯＤ−１８００ （商品名：マー
クテック株式会社・製）や同ＯＤ−２８００１１（同上
》が挙げられる一を用い、これを検査物の表面に、常法
通り、八ヶ塗り２スプレー等の手段により付着させ、３
〜７分間放置した後、検査物表面を常法通り、スプレー
ノズル、シャワーノズル等を用いて水を１〜３ ｋｇ／
ｃｍ”の水圧で吹きつけて水洗し、更に検査物表面を４
５〜６５℃で４〜６分間乾燥する．
乾燥後、上記した本発明に係るエアゾール缶入り現像剤
を用い、ノズル口と検査物表面との距離を２０〜４０ｃ
＋ｓ程度に設定した状態で、液化ガス噴射剤と白色無機
微粉末とを検査物表面に向けて噴射すれば上記した通り
の作用によって欠陥指示模様が形成される．
その後、常法に従って、暗所にて検査物表面をブラック
ライトの照射下で肉眼により観察すれば、欠陥指示模様
が明瞭に目視できる．［実施例］
本発明の代表的な実施例を挙げれば次の通りである．
実施例ｌ
Ａ．エアゾール缶入り現像剤の調製
粒径約２μ一のタルク８ｇと粒径約１μ諷のケイ酸（ニ
ップシールＮ−３００Ａ：商品名二日本シリカ工業株式
会社・製）２０ｇとをエアゾール缶に入れ、次いで、こ
れにフロン−１２ ３００一１を充填圧４． ５ｋｇ
／ｃｍ”で封入してエアゾール化した．
Ｂ．蛍光浸透探傷試験
ｒＪ Ｉｓ Ｚ ２３４３−１９８２Ｊ （７）Ａ
型試験片を用い、その表面を清浄にした後、試験片表面
の全面に市販の蛍光浸透液（スパーグロー浸透探傷剤Ｏ
Ｄ−２８００１１：商品名：マークテック株式会社・製
）をスプレーし、５分間放置後、当該試験片表面にシャ
ワーノズルにて２ ｋｇ／ｃａｂ”の水圧で水を吹きつ
けて水洗した後、約６０’Ｃで５分間乾燥し、乾燥後、
試験片表面の片面に上記エアゾール缶入り現像剤を、ノ
ズル口から試験片表面までの距離約３０ｃｍで、一様に
吹き付け、吹き付け後、当該試験片に振動を与えて余分
の現像剤を除ｆ１１９、
いイ室にて試験片表面をブラックライトの照射下で肉眼
により観察したところ、現像剤を吹き付けた試験片表面
には５現像剤を吹き付けていない試験片表面よりもはる
かに鮮明な欠陥指示模様が目視できた。また、２時間経
過後に、再度、肉眼により観察したところ欠陥指示模様
のニジミは認められず、初期の検出性能を維持している
ことが確認できた。That is, the fluorescent penetrating liquid is a highly penetrating liquid made of a well-known petroleum-based mixed solvent, glycol ether, polyoxyethylene alkyl allyl ether, etc., and an oil-soluble fluorescent dye or a penzotriazole-type oil-soluble fluorescent dye is mixed with about 1. 5
Examples of commercially available products include Super Glow Penetrant OD-1800 (trade name: manufactured by Marktec Co., Ltd.) and OD-280011 (same as above). is applied to the surface of the object to be inspected using a method such as Yatsuka-nuri 2 spray in the usual manner, and 3
After leaving it for ~7 minutes, apply 1 to 3 kg of water to the surface of the test object using a spray nozzle, shower nozzle, etc. as usual.
Spray with water at a pressure of 4 cm", rinse with water, and then clean the surface of the test object with 4 cm of water pressure.
Dry at 5-65°C for 4-6 minutes. After drying, use the aerosol canned developer according to the present invention described above, and set the distance between the nozzle opening and the surface of the test object to 20 to 40 cm.
If the liquefied gas propellant and the white inorganic fine powder are injected toward the surface of the object to be inspected while the temperature is set to approximately +s, a defect indicating pattern is formed by the action described above. After that, if the surface of the test object is observed with the naked eye under a black light in a dark place according to the usual method, the defect indication pattern can be clearly seen. [Example] Representative examples of the present invention are as follows. Example I A. Preparation of developer in an aerosol can Put 8 g of talc with a particle size of about 2 μm and 20 g of silicic acid with a particle size of about 1 μm (Nip Seal N-300A, manufactured by Nippon Silica Kogyo Co., Ltd.) into an aerosol can, and then , Fill this with Freon-12 300-1 at a pressure of 4. 5kg
/cm” and made into an aerosol. B. Fluorescent penetrant testing rJ Is Z 2343-1982J (7) A
Using a mold test piece, after cleaning the surface, apply a commercially available fluorescent penetrant liquid (Spar Glow Penetrant Flaw Detector O) to the entire surface of the test piece.
D-280011 (trade name: Marktec Co., Ltd.) was sprayed on the surface of the test piece, left for 5 minutes, and the surface of the test piece was sprayed with water at a water pressure of 2 kg/cab with a shower nozzle and washed with water. Dry at 60'C for 5 minutes, and after drying,
The developer in the aerosol can was sprayed uniformly onto one side of the test piece surface at a distance of about 30 cm from the nozzle opening to the test piece surface, and after spraying, the test piece was vibrated to remove excess developer. When the surface of the test piece was observed with the naked eye under black light irradiation in a small room, it was found that the surface of the test piece sprayed with the developer had much clearer defect indications than the surface of the test piece that had not been sprayed with the developer. The pattern was visible. Furthermore, when the sample was visually observed again after 2 hours had elapsed, no blurring of the defect indicating pattern was observed, confirming that the initial detection performance was maintained.
実施例２
Ａ．エアゾール缶入り現像剤の調製
粒径約３μｌの炭酸マグネシウムｌｏｇと粒径約２μｌ
のケイ酸（サイロイド２４４：商品名：富士デヴソン株
式会社・製）１５ｇとをエアゾール缶に入れ、次いで、
これにＬＰＧ ３５０＋ｓｌを充填圧４． ５ｋｇ／
ｃｍ”で封入してエアゾール化した。Example 2 A. Preparation of aerosol canned developer Magnesium carbonate log with a particle size of approximately 3 μl and a particle size of approximately 2 μl
15 g of silicic acid (Syroid 244, product name: manufactured by Fuji Devson Co., Ltd.) was placed in an aerosol can, and then
This was filled with LPG 350+sl at a pressure of 4. 5kg/
cm'' and made into an aerosol.
Ｂ．蛍光浸透探傷試験
エアゾール缶入り現像剤として、上記エアゾール缶入り
現像剤を用いた他は、実施例ｌと全く同一の条件で蛍光
浸透深傷試験を行なったところ、実施例ｌの場合と同等
の結果を得られた．実施例３
Ａ．エアゾール缶入り現像剤の調製
粒径約０．５μ国の炭酸カルシウムｌｏｇと粒径約ｌμ
ｍのケイ酸（アエロジール：商品名二日本アエロジール
株式会社・製）２ｇと粒径約２μｍのケイ酸（カーブレ
ックスａｌｌ２０：商品名：シオノギ製薬株式会社・！
！）１５ｇとをエアゾール缶に入れ、次いで、これにＤ
ＭＥ ３５０ＩＩｌｌを充填圧４． ５ｋｇ／ｃｍ”
で封入してエアゾール化した。B. Fluorescent Penetrant Flaw Detection Test A fluorescent penetrant deep flaw test was conducted under exactly the same conditions as in Example 1, except that the above aerosol canned developer was used as the aerosol canned developer. I got the results. Example 3 A. Prepared particle size of developer in aerosol can: approx. 0.5 μ Calcium carbonate log in country and particle size: approx. 1 μ
2 g of silicic acid (Aerogel: product name: manufactured by Nippon Aerosil Co., Ltd.) and 2 g of silicic acid with a particle size of about 2 μm (Carbrex All20: product name: Shionogi Pharmaceutical Co., Ltd.)!
! ) into an aerosol can, then add D
ME 350IIll at filling pressure 4. 5kg/cm”
It was sealed and made into an aerosol.
Ｂ．蛍光浸透探傷試験
エアゾール缶入り現像剤として、上記エアゾール缶入り
現像剤を用いた他は、実施例ｌと全く同一の条件で蛍光
浸透深傷試験を行なったところ、実施例ｌと同様の結果
が得られた．
［効果］
以上説明した通りの本発明によれば、従来法では適用が
困難であった大型部品は勿論、適用が殆んど不可能であ
った構造物等の部分探偏に乾式現像剤を用いる蛍光浸透
深傷試験方法を容易に適用することができ、しかも乾式
現像剤を用いる蛍光浸透探傷試験方法が本来的に有して
いる長所は何等失なわれることがなく、精度良く探傷試
験が行えるのである。B. Fluorescent Penetrant Flaw Detection Test A fluorescent penetrant deep flaw test was conducted under exactly the same conditions as in Example 1, except that the above aerosol canned developer was used as the aerosol canned developer, and the same results as in Example 1 were obtained. Obtained. [Effects] According to the present invention as explained above, the dry developer can be used not only for large parts, which were difficult to apply with conventional methods, but also for partial detection of structures, etc., which were almost impossible to apply. The fluorescent penetrant deep flaw testing method used can be easily applied, and the inherent advantages of the fluorescent penetrant flaw testing method using a dry developer are not lost, and flaw detection can be performed with high accuracy. It can be done.
従って、本発明は、乾式現像剤を用いる蛍光浸透探傷試
験方法の適用範囲を飛躍的に拡大せしめたもので、その
産業利用性は礪めて大きいといえる。Therefore, the present invention dramatically expands the scope of application of the fluorescent penetrant testing method using a dry developer, and its industrial applicability can be said to be even greater.
Claims (1)
面開口欠陥部内に浸透させた後、欠陥部内に浸透せずに
検査物表面に残留している余剰の蛍光浸透液を除去し、
更に検査物表面を乾燥させ、次に白色無機微粉末を乾燥
状態で当該検査物表面に適用して前記欠陥部内に浸透し
ている蛍光浸透液を吸い出させるとともに吸い出された
蛍光浸透液によって該白色無機微粉末を前記欠陥部に付
着させることによって欠陥指示模様を現出させる乾式現
像剤を用いる蛍光浸透探傷試験方法において、エアゾー
ル用液化ガス噴射剤と白色無機微粉末とをエアゾール缶
に封入して前記検査物表面に向けて噴射し、エアゾール
用液化ガス噴射剤は気化させ、白色無機微粉末のみを乾
燥状態で当該検査物表面に適用することを特徴とする乾
式現像剤を用いる蛍光浸透探傷試験方法。 ２、エアゾール用液化ガス噴射剤と白色無機微粉末との
二者のみをエアゾール缶に封入してなるエアゾール缶入
り現像剤。[Claims] 1. After applying a fluorescent penetrant liquid to the surface of the object to be inspected and allowing the penetrant to penetrate into the surface opening defect, the excess remaining on the surface of the object without penetrating into the defect. remove the fluorescent penetrant of
Furthermore, the surface of the inspection object is dried, and then white inorganic fine powder is applied to the surface of the inspection object in a dry state to suck out the fluorescent penetrant liquid that has penetrated into the defective part, and the fluorescent penetrant liquid that has been sucked out In a fluorescent penetrant testing method using a dry developer in which the white inorganic fine powder is attached to the defective part to reveal a defect indicating pattern, a liquefied gas propellant for aerosol and a white inorganic fine powder are sealed in an aerosol can. Fluorescence penetration using a dry developer, characterized in that the aerosol liquefied gas propellant is vaporized and only white inorganic fine powder is applied in a dry state to the surface of the test object. Flaw detection test method. 2. A developer packaged in an aerosol can, in which only two components, a liquefied gas propellant for aerosol and a white inorganic fine powder, are sealed in the aerosol can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1116468A JP2566460B2 (en) | 1989-05-09 | 1989-05-09 | Fluorescent Penetrant Testing Method Using Dry Phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1116468A JP2566460B2 (en) | 1989-05-09 | 1989-05-09 | Fluorescent Penetrant Testing Method Using Dry Phenomenon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02293654A true JPH02293654A (en) | 1990-12-04 |
| JP2566460B2 JP2566460B2 (en) | 1996-12-25 |
Family
ID=14687853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1116468A Expired - Fee Related JP2566460B2 (en) | 1989-05-09 | 1989-05-09 | Fluorescent Penetrant Testing Method Using Dry Phenomenon |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2566460B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS528117A (en) * | 1975-07-03 | 1977-01-21 | Teijin Ltd | Oiling device |
| JPS59139534A (en) * | 1984-01-20 | 1984-08-10 | Hitachi Ltd | Face plate of image pick up tube |
-
1989
- 1989-05-09 JP JP1116468A patent/JP2566460B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS528117A (en) * | 1975-07-03 | 1977-01-21 | Teijin Ltd | Oiling device |
| JPS59139534A (en) * | 1984-01-20 | 1984-08-10 | Hitachi Ltd | Face plate of image pick up tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2566460B2 (en) | 1996-12-25 |
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