JP2585023B2 - Thermal spray coating test method - Google Patents
Thermal spray coating test methodInfo
- Publication number
- JP2585023B2 JP2585023B2 JP62251784A JP25178487A JP2585023B2 JP 2585023 B2 JP2585023 B2 JP 2585023B2 JP 62251784 A JP62251784 A JP 62251784A JP 25178487 A JP25178487 A JP 25178487A JP 2585023 B2 JP2585023 B2 JP 2585023B2
- Authority
- JP
- Japan
- Prior art keywords
- thermal spray
- spray coating
- coating
- quality
- test method
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、溶射皮膜試験方法に関する。Description: TECHNICAL FIELD The present invention relates to a thermal spray coating test method.
金属部材の表面に、溶射法を適用し、部材の使用環境
に応じた材料特性を有する金属（耐熱合金、耐食合金、
耐摩耗合金等）、その他の材料（セラミック、セラミッ
クと金属との混合物等）を溶射材として溶射皮膜を形成
することは、代表的な部材表面改質法として広く実施さ
れている。Applying thermal spraying method to the surface of the metal member, the metal having the material characteristics according to the usage environment of the member (heat-resistant alloy, corrosion-resistant alloy,
Forming a thermal spray coating by using a thermal spray material such as a wear-resistant alloy or another material (ceramic, a mixture of ceramic and metal, etc.) is widely practiced as a typical member surface modification method.
この溶射皮膜は、溶射材料（粉末状、ワイヤ状等）を
加熱溶融するとともに、これを高圧噴射ガスにより微細
な粒子（溶滴）として部材表面に吹付けて所定の膜厚と
なるように付着堆積させることにより形成される。The thermal spray coating heats and melts the thermal spray material (powder, wire, etc.) and sprays it onto the surface of the member as fine particles (droplets) with a high-pressure jet gas to adhere to a predetermined thickness. It is formed by depositing.
溶射皮膜の部材表面改質膜としての機能を確保するに
は、該皮膜が均一な緻密性を有していると共に、部材表
面に対する密着性が高く、使用環境でうける機械的衝撃
や熱的衝撃、あるいは他材の接触等により亀裂・剥離、
その他の損傷を生じることのない安定した品質を備えた
ものであることが必要である。In order to ensure the function of the sprayed coating as a surface modification film for a member, the coating has uniform uniformity, high adhesion to the member surface, and mechanical and thermal shocks in the use environment. Or cracking or peeling due to contact with other materials, etc.
It must be of a stable quality without any other damage.
上記溶射皮膜の品質判定方法として、さまざまな方
法、例えば、JIS H 8666 4.2に規定されている密着強度
試験、またはJIS H 8666 4.5に規定されている熱衝撃試
験等が行われており、またACTJP法と称される方法も提
案されている。As a method for determining the quality of the sprayed coating, various methods, for example, an adhesion strength test specified in JIS H 8666 4.2, or a thermal shock test specified in JIS H 8666 4.5, and the like, and ACTJP A method called a method has also been proposed.
しかし、簡易にしてしかも皮膜品質を適確に評価する
ことのできる信頼性のある判定方法は少ない。However, there are few reliable determination methods that can easily and accurately evaluate film quality.
本発明は、上記に鑑み、極めて簡易で、信頼性の高い
溶射皮膜試験方法を提供するものである。In view of the above, the present invention provides an extremely simple and highly reliable thermal spray coating test method.
本発明の溶射皮膜試験方法は、 部材表面の溶射皮膜に超音波振動を印加して該皮膜の
衝撃破砕による減量を測定し、その減量測定値に基づい
て溶射皮膜品質を判定することを特徴としている。The thermal spray coating test method of the present invention is characterized in that ultrasonic vibration is applied to a thermal spray coating on the surface of a member, the weight loss due to impact crushing of the coating is measured, and the thermal spray coating quality is determined based on the measured weight loss value. I have.
溶射皮膜で被覆されている部材（被検材）の該溶射皮
膜に超音波振動を印加すると、その衝撃により、溶射皮
膜はその品質の高低に対応する剥離が生じる。従って、
被検材の種類等に応じて定められる一定の超音波振動印
加条件下に生じる該皮膜の衝撃破砕減量と品質レベルな
いしその良否との関係を予め求めておけば、多数の被検
材についてその超音波振動印加条件下に得られる皮膜減
量の測定値から直ちに皮膜の品質の高低ないし良否を判
定することができる。When ultrasonic vibration is applied to the sprayed coating of a member (test material) coated with the sprayed coating, the impact causes peeling of the sprayed coating corresponding to the quality of the sprayed coating. Therefore,
If the relationship between the loss of impact crushing of the coating and the quality level or its quality, which is generated under a constant ultrasonic vibration application condition determined according to the type of the test material, is determined in advance, the number of test materials can be improved. From the measured value of the weight loss of the film obtained under the condition of applying the ultrasonic vibration, it is possible to immediately determine the quality of the film or the quality of the film.
第１図は部材（１）の表面に形成された溶射皮膜
（２）の膜面に振動端子（Ａ）を押付けて超音波振動を
印加する状態を示している。被検材に対する超音波振動
の印加条件、例えば超音波振動出力、振動端子押付け圧
力、あるいは印加時間等は、被検材の種類、形状、サイ
ズ、溶射皮膜材の材質・膜厚、あるいは皮膜品質の合否
判定基準内容等に応じて適宜決定すればよいが、例えば
超音波振動出力20〜300W、共振周波数10〜30KHz、端子
押付け圧力30〜100g/mm2、印加時間10〜60秒に設定する
ことにより再現性を有する測定結果を得ることができ
る。また、超音波振動印加条件により、破壊試験のほか
に非破壊試験法として適用することもできる。FIG. 1 shows a state in which the vibration terminal (A) is pressed against the surface of the thermal spray coating (2) formed on the surface of the member (1) to apply ultrasonic vibration. The conditions for applying ultrasonic vibration to the test material, such as ultrasonic vibration output, vibration terminal pressing pressure, or application time, depend on the type, shape and size of the test material, the material and film thickness of the sprayed coating material, or the coating quality. The ultrasonic vibration output 20 to 300 W, the resonance frequency 10 to 30 KHz, the terminal pressing pressure 30 to 100 g / mm 2 , and the application time 10 to 60 seconds are set as appropriate. As a result, reproducible measurement results can be obtained. Depending on the ultrasonic vibration application conditions, the method can be applied as a non-destructive test method in addition to the destructive test.
軟鋼部材表面に溶射皮膜を形成した２種の被検材
（Ａ）おより（Ｂ）について、その溶射皮膜面に、振動
端子としてセラミック（SiC）製中実丸棒（直径10mm）
を、50g/mm2の静圧で押付け、出力150W、共振周波数16K
Hz、印加時間10秒の条件下に超音波振動を印加し、それ
ぞれの皮膜の衝撃破砕による減量を秤量した。被検材
（Ａ）の溶射皮膜は、99.5％Al2O3−TiO2セラミックか
らなる膜厚0.5mmの皮膜、また被検材（Ｂ）のそれは炭
化タングステン系自溶性合金からなる膜厚0.5mmの皮膜
であり、皮膜面積はいずれも25cm2である。なお、上記
と同一の超音波振動をガラス板（板厚10mm）に印加した
場合の衝撃破砕による減量は41.5mg（10回平均値）であ
る。For the two types of test materials (A) and (B) with the thermal spray coating formed on the surface of the mild steel member, a solid ceramic (SiC) round bar (diameter 10 mm) was used as a vibration terminal on the spray coating surface.
And pressing at a static pressure of 50 g / mm 2, output 150 W, the resonance frequency 16K
Ultrasonic vibration was applied under the conditions of Hz and application time of 10 seconds, and the weight loss due to impact crushing of each film was weighed. The thermal sprayed coating of the test material (A) is a 0.5 mm thick film made of 99.5% Al 2 O 3 —TiO 2 ceramic, and the test material (B) is a 0.5 mm thick film of a tungsten carbide based self-fluxing alloy. mm, and the area of each film is 25 cm 2 . In addition, when the same ultrasonic vibration as described above was applied to a glass plate (plate thickness: 10 mm), the weight loss by impact crushing was 41.5 mg (average value of 10 times).
上記被検材（Ａ）および（Ｂ）の各皮膜の衝撃破砕減
量測定値（10回平均値）と、その品質の良否判定結果を
第１表に示す。Table 1 shows the measured values of the impact crushing weight loss (average value of 10 times) of each film of the test materials (A) and (B) and the quality judgment results.
〔発明の効果〕 本発明によれば、超音波振動の印加と、それによる溶
射皮膜の衝撃破砕減量を測定するという極めて簡易な操
作と手順により、高い信頼性を以て溶射皮膜品質の良否
を判定することができる。従って、溶射製品の検査工程
の省力化、および品質保証に大きな効果が得られる。 [Effects of the Invention] According to the present invention, the quality of a sprayed coating quality is determined with high reliability by an extremely simple operation and procedure of applying ultrasonic vibration and measuring the impact crushing loss of the sprayed coating. be able to. Therefore, a great effect can be obtained in labor saving of the inspection process of the sprayed product and quality assurance.
第１図は本発明の試験法の例を模式的に示す説明図であ
る。 1:部材、2:溶射皮膜、A:振動端子。FIG. 1 is an explanatory view schematically showing an example of the test method of the present invention. 1: Member, 2: Thermal spray coating, A: Vibration terminal.
Claims (1)
動を印加して該皮膜の衝撃破砕による減量を測定し、そ
の減量測定値に基づいて溶射皮膜品質を判定することを
特徴とする溶射皮膜の試験方法。An ultrasonic vibration is applied to a sprayed coating formed on the surface of a member to measure weight loss due to impact crushing of the coating, and the quality of the sprayed coating is determined based on the measured weight loss. Test method for thermal spray coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62251784A JP2585023B2 (en) | 1987-10-06 | 1987-10-06 | Thermal spray coating test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62251784A JP2585023B2 (en) | 1987-10-06 | 1987-10-06 | Thermal spray coating test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0194259A JPH0194259A (en) | 1989-04-12 |
| JP2585023B2 true JP2585023B2 (en) | 1997-02-26 |
Family
ID=17227876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62251784A Expired - Lifetime JP2585023B2 (en) | 1987-10-06 | 1987-10-06 | Thermal spray coating test method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2585023B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483216A (en) * | 2014-12-31 | 2015-04-01 | 华侨大学 | Ultrasonic-vibration based microscale testing device for material impact fatigue |
-
1987
- 1987-10-06 JP JP62251784A patent/JP2585023B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0194259A (en) | 1989-04-12 |
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