JPS633804Y2 - - Google Patents
Info
- Publication number
- JPS633804Y2 JPS633804Y2 JP1981128870U JP12887081U JPS633804Y2 JP S633804 Y2 JPS633804 Y2 JP S633804Y2 JP 1981128870 U JP1981128870 U JP 1981128870U JP 12887081 U JP12887081 U JP 12887081U JP S633804 Y2 JPS633804 Y2 JP S633804Y2
- Authority
- JP
- Japan
- Prior art keywords
- erosion
- film
- coating
- blade
- angle
- 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
Links
- 239000000463 material Substances 0.000 claims description 22
- 230000003628 erosive effect Effects 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 7
- 229910001347 Stellite Inorganic materials 0.000 description 4
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】
本考案は送風機翼、スラリー又は粉体移送用配
管及び部品、ボイラ用伝熱管等、気体又は液体中
の固体粒子によるエロージヨンに対する耐エロー
ジヨン性部材の改良に関するものである。[Detailed Description of the Invention] The present invention relates to improvements in erosion-resistant members such as blower blades, pipes and parts for transferring slurry or powder, heat exchanger tubes for boilers, etc. against erosion caused by solid particles in gas or liquid.
第１図は送風機の従来翼の１部を示す概略外観
図、第２図は第１図のＡ〜Ａ拡大断面図である。
第２図において、１は翼本体、２はステライトの
皮膜、３は固体粒子、４は固体粒子３の運動方向
を示す矢印、５は翼材表面におけるエロージヨン
の発生しやすい個所を示す。 FIG. 1 is a schematic external view showing a part of a conventional blade of a blower, and FIG. 2 is an enlarged sectional view taken from A to A in FIG. 1.
In FIG. 2, 1 is the blade body, 2 is the stellite coating, 3 is the solid particle, 4 is an arrow indicating the direction of movement of the solid particle 3, and 5 is a location where erosion is likely to occur on the surface of the blade material.
従来例として、耐エロージヨン性をもたせる目
的で、第２図のように翼本体１表面に、ステライ
トなどを溶接肉盛又は金属溶射等によつてステラ
イト皮膜２を施していたが、翼材表面の個所によ
つては、固体粒子３の衝突角度の違いによる異常
エロージヨンが発生するため、エロージヨンに対
する効果は十分ではなかつた。 As a conventional example, in order to provide erosion resistance, a stellite film 2 was applied to the surface of the blade body 1 by welding overlay or metal spraying with stellite, etc., as shown in Figure 2. In some places, abnormal erosion occurs due to the difference in the collision angle of the solid particles 3, so the effect against erosion was not sufficient.
固体粒子によるエロージヨンの発生において
は、部材表面への粒子の衝突角が、エロージヨン
に影響する重要な因子の一つである。第３図に示
すように、固くてもろい脆性材料２０と、伸びの
ある延性材料２１とでは、エロージヨン発生の様
相が異なることが良く知られている。 When erosion occurs due to solid particles, the collision angle of the particles on the surface of the member is one of the important factors that affects the erosion. As shown in FIG. 3, it is well known that the manner in which erosion occurs is different between a hard and brittle brittle material 20 and a stretchable ductile material 21.
そこで上述のようなエロージヨンに対して異な
つた特性を有する２種類の材料を、第４図のよう
に固体粒子３の衝突角６１，６２に応じて、最も
効果的と思われる場所に、皮膜２０，２１を区分
して設けることにより、耐エロージヨン性をもた
せることも考えられたが、事前に固体粒子３の衝
突角６１，６２を予想して、皮膜２０，２１の設
置個所を設定することは困難であつた。 Therefore, as shown in FIG. 4, two types of materials having different characteristics against erosion are applied to the coating 20 at a location considered to be most effective depending on the collision angles 61 and 62 of the solid particles 3. , 21 could be provided separately to provide erosion resistance, but it is not possible to predict the collision angles 61, 62 of the solid particles 3 in advance and set the installation locations of the coatings 20, 21. It was difficult.
本考案は前記従来の欠点を解消するために提案
されたもので、金属部材の表面を延性材料の皮膜
と脆性材料の皮膜で積層被覆することにより、信
頼性の高い耐エロージヨン性を持たせることがで
きる耐エロージヨン性部材を提供せんとするもの
である。 The present invention was proposed to eliminate the above-mentioned conventional drawbacks, and provides highly reliable erosion resistance by coating the surface of a metal member with a layer of a ductile material film and a brittle material film. It is an object of the present invention to provide an erosion-resistant member that is capable of resistant to erosion.
以下本考案の実施例を図面について説明する
と、第５図は本考案の実施例を示す皮膜を施した
翼の横断面図、第６図は一定期間使用後の状況を
示す翼の横断面図である。 The embodiment of the present invention will be explained below with reference to the drawings. Fig. 5 is a cross-sectional view of a blade coated with a coating showing an embodiment of the present invention, and Fig. 6 is a cross-sectional view of the blade after use for a certain period of time. It is.
図において、１は翼本体、２０は脆性材料によ
る皮膜、２１は延性材料による皮膜を示す。さて
翼本体１に耐エロージヨン性皮膜を施す場合は、
先ず一層目に延性材として、例えばステライトを
溶接肉盛又は金属溶射によつて皮膜２１を形成さ
せる。 In the figure, 1 is a blade body, 20 is a coating made of a brittle material, and 21 is a coating made of a ductile material. Now, when applying an erosion-resistant coating to the wing body 1,
First, a coating 21 is formed on the first layer using a ductile material such as stellite by welding overlay or metal spraying.
次に同皮膜２１の上に脆性材として、例えばセ
ラミツク材による溶射を行なつたのち、翼を加熱
炉に入れて加熱するか、又はガス加熱器により表
面より加熱してセラミツク皮膜を所要の温度で焼
成して皮膜２０を形成させる。 Next, after thermal spraying a brittle material such as ceramic material onto the coating 21, the blade is heated in a heating furnace or heated from the surface with a gas heater to bring the ceramic coating to the desired temperature. The film 20 is formed by firing.
次に作用を説明すると、上述のようにして成形
された翼材を、一定使用した結果、第６図に一点
鎖線８で示すように、脆性材の皮膜２０の一部で
ある個所７は、粒子の高角度衝突によつて脱落す
るが、その下層には高角度衝突に対して強い延性
材の皮膜２１が露出する。また残りの個所の低角
度衝突部分は、低角度衝突に対して強い脆性材の
皮膜２０がそのまま残るようになつている。 Next, to explain the effect, as a result of constant use of the blade material formed as described above, as shown by the dashed line 8 in FIG. The particles fall off due to high-angle collisions, and a coating 21 of a ductile material that is strong against high-angle collisions is exposed below. Further, in the remaining low-angle collision portions, the coating 20 of a brittle material that is strong against low-angle collisions remains as is.
以上詳細に説明した如く、本考案による耐エロ
ージヨン部材は、粒子の高角度衝突及び低角度衝
突に耐える皮膜が積層して施されているため、耐
エロージヨン性に対する信頼性が高く、部材の耐
用寿命が大幅に改善される。 As explained in detail above, the erosion-resistant member according to the present invention is coated with a layered film that can withstand high-angle and low-angle collisions of particles, so it has high reliability in erosion resistance and has a long service life of the member. is significantly improved.
なお、前記実施例においては、翼本体１表面に
延性材の皮膜２１を形成した後、同皮膜２１表面
を脆性材の皮膜２０で積層被覆した例であつた
が、逆に翼本体１表面を脆性材の皮膜２０で被覆
した後、同皮膜２０表面を延性材の皮膜２１で形
成することもできる。またこれらの皮膜２０，２
１を複数層積層することもできる。 In the above embodiment, after forming the film 21 of a ductile material on the surface of the blade body 1, the surface of the film 21 was laminated and coated with the film 20 of a brittle material. After coating with the film 20 of a brittle material, the surface of the film 20 may be formed with a film 21 of a ductile material. Moreover, these films 20, 2
1 can also be laminated in multiple layers.
第１図は送風機の従来翼の１部を示す斜視図、
第２図は第１図のＡ〜Ａ拡大断面図、第３図イ，
ロは皮膜材の違いによる粒子衝突角（α゜）とエロ
ージヨン度合の関係を示す説明図、第４図は他の
従来翼を示す横断面図、第５図は本考案の実施例
を示す翼の横断面図、第６図は第５図の翼の一定
期間使用後の状態を説明する断面図である。
図の主要部分の説明、１……翼本体、２０……
脆性材料による皮膜、２１……延性材料による皮
膜。
Fig. 1 is a perspective view showing a part of a conventional blade of a blower;
Figure 2 is an enlarged sectional view from A to A in Figure 1, Figure 3 A,
B is an explanatory diagram showing the relationship between the particle collision angle (α°) and the degree of erosion due to differences in coating materials, FIG. 4 is a cross-sectional view of another conventional blade, and FIG. 5 is a blade showing an embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating the state of the blade shown in FIG. 5 after it has been used for a certain period of time. Explanation of the main parts of the figure, 1... wing body, 20...
Film made of brittle material, 21... Film made of ductile material.
Claims (1)
料の皮膜で積層被覆したことを特徴とする耐エロ
ージヨン性部材。 An erosion-resistant member characterized in that the surface of the metal member is laminated and coated with a film of a ductile material and a film of a brittle material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12887081U JPS5833227U (en) | 1981-08-31 | 1981-08-31 | Erosion resistant parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12887081U JPS5833227U (en) | 1981-08-31 | 1981-08-31 | Erosion resistant parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5833227U JPS5833227U (en) | 1983-03-04 |
| JPS633804Y2 true JPS633804Y2 (en) | 1988-01-29 |
Family
ID=29922549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12887081U Granted JPS5833227U (en) | 1981-08-31 | 1981-08-31 | Erosion resistant parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5833227U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61179337U (en) * | 1985-04-30 | 1986-11-08 | ||
| JPH0541238Y2 (en) * | 1987-09-18 | 1993-10-19 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4937912A (en) * | 1972-08-15 | 1974-04-09 |
-
1981
- 1981-08-31 JP JP12887081U patent/JPS5833227U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4937912A (en) * | 1972-08-15 | 1974-04-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5833227U (en) | 1983-03-04 |
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