JPH027643Y2 - - Google Patents
Info
- Publication number
- JPH027643Y2 JPH027643Y2 JP17760484U JP17760484U JPH027643Y2 JP H027643 Y2 JPH027643 Y2 JP H027643Y2 JP 17760484 U JP17760484 U JP 17760484U JP 17760484 U JP17760484 U JP 17760484U JP H027643 Y2 JPH027643 Y2 JP H027643Y2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- feeding device
- outer tube
- inner tube
- powder feeding
- 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
- 239000000843 powder Substances 0.000 claims description 51
- 239000000463 material Substances 0.000 claims description 21
- 239000012159 carrier gas Substances 0.000 claims description 2
- 238000007750 plasma spraying Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 229910018487 Ni—Cr Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 1
- 239000004482 other powder Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Nozzles (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は溶射技術、プラズマ肉盛溶接技術等異
なる２種の粉末材料を混合、送給するために用い
られる粉末送給装置の改良に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a powder feeding device used for mixing and feeding two different powder materials such as thermal spraying technology and plasma build-up welding technology.
第３図に金属材料粉末とセラミツクス材料粉末
とを用いる従来のプラズマ溶射装置の一例を示
す。
FIG. 3 shows an example of a conventional plasma spraying apparatus using metal material powder and ceramic material powder.
第３図において、プラズマ溶射ガン１は制御装
置２より電力を供給されてプラズマジエツト３を
発生する。プラズマ溶射技術の原理は公知である
ので、その詳細な説明は省略する。 In FIG. 3, a plasma spray gun 1 is supplied with electric power from a control device 2 and generates a plasma jet 3. In FIG. Since the principle of plasma spraying technology is well known, detailed explanation thereof will be omitted.
また、粉末送給装置４ａ，４ｂにはそれぞれ金
属材料粉末及びセラミツクス材料粉末が充填さ
れ、搬送ガス（不活性ガス）により、Ｙ字管５を
通つてプラズマ溶射ガン１に送給される。このＹ
字管５内では同時に２種の粉末材料の混合も行な
われる。プラズマ溶射ガン１に送給された粉末は
プラズマジエツト３によつて図示しない被加工物
表面に移行し、衝突して溶射皮膜を形成する。 Further, the powder feeding devices 4a and 4b are filled with metal material powder and ceramic material powder, respectively, and are fed to the plasma spray gun 1 through the Y-tube 5 by a carrier gas (inert gas). This Y
Two types of powder materials are simultaneously mixed in the tube 5. The powder fed to the plasma spray gun 1 is transferred to the surface of a workpiece (not shown) by the plasma jet 3, and collides with the surface of the workpiece to form a sprayed coating.
第４図に上記プラズマ溶射装置を用いて形成さ
れたNi−CrとZrO2との混合溶射皮膜の組識の顕
微鏡観察による模式図を示す。
FIG. 4 shows a schematic diagram obtained by microscopic observation of the structure of a mixed sprayed coating of Ni-Cr and ZrO 2 formed using the plasma spraying apparatus described above.
第４図において、母材６表面には溶射皮膜が形
成され、この溶射皮膜内ではNi−Cr粒子７と
ZrO2粒子８とが分散している。 In Fig. 4, a sprayed coating is formed on the surface of the base material 6, and within this sprayed coating, Ni-Cr particles 7 and
ZrO 2 particles 8 are dispersed.
しかし、従来のプラズマ溶射装置を用いた場
合、第４図に示すようにNi−Cr粒子７とZrO2粒
子８との分散が極めて不均一であることが確認さ
れている。この原因は、粉末送給装置４ａ，４ｂ
及びＹ字管５を用いた場合には、２種の粉末材料
を均一に混合することが極めて困難であるためで
あると考えられる。 However, when a conventional plasma spraying apparatus is used, it has been confirmed that the Ni--Cr particles 7 and ZrO 2 particles 8 are extremely non-uniformly dispersed, as shown in FIG. The cause of this is that the powder feeding devices 4a, 4b
This is believed to be because it is extremely difficult to uniformly mix two types of powder materials when the Y-shaped tube 5 is used.
また、粉末送給時にＹ字管５に粉末が詰まり易
いという問題もあつた。 Another problem was that the Y-tube 5 was easily clogged with powder during powder feeding.
本考案は上記問題点を解消するためになされた
ものであり、２種の異なる粉末材料を均一に混合
するとともに粉末の詰まりなどの不具合が生じな
い高性能の粉末送給装置を提供することを目的と
するものである。 The present invention was made to solve the above problems, and aims to provide a high-performance powder feeding device that can uniformly mix two different powder materials and does not cause problems such as powder clogging. This is the purpose.
〔問題点を解決するための手段〕
本考案の粉末送給装置は、１種の粉末材料が上
部から供給される外管と、他の１種の粉末材料が
上部から供給される内管と、外管と内管との間隙
に取付けられた螺旋状のフインとで構成したこと
を特徴とするものである。[Means for Solving the Problems] The powder feeding device of the present invention includes an outer tube into which one type of powder material is fed from the top, and an inner tube into which the other type of powder material is fed from the top. , which is characterized by comprising a spiral fin attached to the gap between the outer tube and the inner tube.
このような粉末送給装置によれば、外管から送
給される粉末材料が螺旋状のフインに沿つて回転
運動をしながら、内管から送給される粉末材料と
混合するので、両者の粉末が均一に混合する。ま
た、粉末が装置の軸にほぼ平行に流れるので、装
置内での粉末の詰まりなども生じない。
According to such a powder feeding device, the powder material fed from the outer tube rotates along the spiral fins and mixes with the powder material fed from the inner tube, so that both of them are mixed. The powder is mixed evenly. Furthermore, since the powder flows approximately parallel to the axis of the device, no powder clogging occurs within the device.
以下、本考案の実施例を第１図を参照して説明
する。
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
第１図において、本考案に係る粉末送給装置の
本体は外管１１と内管１２とで構成されており、
外管１１と内管１２との間の間隙１３には螺旋状
のフイン１４が取付けられている。前記内管１２
下方の外管１１の内部は２種の粉末材料の混合室
１５となつている。 In FIG. 1, the main body of the powder feeding device according to the present invention is composed of an outer tube 11 and an inner tube 12.
A spiral fin 14 is attached to a gap 13 between the outer tube 11 and the inner tube 12. The inner tube 12
The inside of the lower outer tube 11 is a mixing chamber 15 for two types of powder materials.
この粉末送給装置において、２種の粉末材料の
うち１種は外管１１の上部外周に設けられた外管
入口１６からフイン１４に沿つて外管１１と内管
１２との間の間隙１３を通り、混合室１５へ入
る。一方、他の１種の粉末材料は内管１２上端の
内管入口１７から内管１２内を通つて混合室１５
へ入る。 In this powder feeding device, one of the two types of powder materials is passed from the outer tube inlet 16 provided on the upper outer periphery of the outer tube 11 to the gap 13 between the outer tube 11 and the inner tube 12 along the fins 14. , and enter the mixing chamber 15. On the other hand, another kind of powder material passes through the inner tube 12 from the inner tube inlet 17 at the upper end of the inner tube 12 to the mixing chamber 15.
Enter.
このような粉末送給装置によれば、外管入口１
６から送給された粉末材料は螺旋状のフイン１３
によつて回転運動をしながら、混合室１５に入
り、内管入口１７から送給された他の粉末材料と
混合されるので、両者の粉末が均一に混合する。 According to such a powder feeding device, the outer tube inlet 1
The powder material fed from the spiral fin 13
The powder enters the mixing chamber 15 while being rotated by the inner tube, and is mixed with the other powder material fed from the inner tube inlet 17, so that both powders are mixed uniformly.
事実、上記粉末送給装置を用いてプラズマ溶射
によつて形成させたNi−CrとZrO2の混合溶射皮
膜の組織の顕微鏡観察を行なつたところ、第２図
に模式図で示すように母材１８表面に形成された
溶射皮膜内でNi−Cr粒子１９とZrO2粒子２０と
が均一に分散していることが確認された。このこ
とから、上記粉末送給装置では混合室１５内で２
種の粉末材料が均一に混合されていることがわか
る。 In fact, when we conducted a microscopic observation of the structure of a mixed sprayed coating of Ni-Cr and ZrO 2 formed by plasma spraying using the above-mentioned powder feeding device, we found that the structure of the mixed sprayed coating of Ni-Cr and ZrO 2 formed by plasma spraying was as shown in the schematic diagram in Figure 2. It was confirmed that Ni-Cr particles 19 and ZrO 2 particles 20 were uniformly dispersed within the sprayed coating formed on the surface of material 18. For this reason, in the powder feeding device described above, two
It can be seen that the seed powder material is mixed uniformly.
また、粉末の流れが粉末送給装置の軸方向にほ
ぼ平行であるため、装置内での粉末の詰まりなど
の問題も生じない。更に、構造も比較的簡単であ
り、安価であるため経済性にも優れている。 Further, since the powder flow is substantially parallel to the axial direction of the powder feeding device, problems such as powder clogging within the device do not occur. Furthermore, the structure is relatively simple and inexpensive, so it is highly economical.
以上詳述した如く本考案の粉末送給装置によれ
ば、２種の異なる粉末材料を均一に混合すること
ができ、装置内での粉末の詰まりも生じず、溶射
技術やプラズマ肉盛溶接技術の向上に大きく寄与
するものである。
As detailed above, according to the powder feeding device of the present invention, two different powder materials can be mixed uniformly, there is no powder clogging in the device, and thermal spraying technology and plasma overlay welding technology can be used. This will greatly contribute to the improvement of
第１図は本考案の実施例における粉末送給装置
の断面図、第２図は同粉末送給装置を用いてプラ
ズマ溶射により形成された混合溶射皮膜の組織の
顕微鏡観察による模式図、第３図は従来の粉末送
給装置を備えたプラズマ溶射装置の構成図、第４
図は同装置を用いてプラズマ溶射により形成され
た混合溶射皮膜の組織の顕微鏡観察による模式図
である。
１１……外管、１２……内管、１３……間隙、
１４……フイン、１５……混合室、１６……外管
入口、１７……内管入口、１８……母材、１９…
…Ni−Cr粒子、２０……ZrO2粒子。
Fig. 1 is a sectional view of a powder feeding device according to an embodiment of the present invention, Fig. 2 is a schematic diagram of the structure of a mixed sprayed coating formed by plasma spraying using the same powder feeding device, observed by microscopic observation, and Fig. 3 Figure 4 is a configuration diagram of a plasma spraying device equipped with a conventional powder feeding device.
The figure is a schematic diagram obtained by microscopic observation of the structure of a mixed thermal spray coating formed by plasma spraying using the same apparatus. 11...Outer pipe, 12...Inner pipe, 13...Gap,
14...Fin, 15...Mixing chamber, 16...Outer tube inlet, 17...Inner tube inlet, 18...Base material, 19...
...Ni-Cr particles, 20...ZrO 2 particles.
Claims (1)
合、送給する粉末送給装置において、１種の粉末
材料が上部から供給される外管と、他の１種の粉
末材料が上部から供給される内管と、上記外管と
上記内管との間隙に取付けられた螺旋状のフイン
とを具備したことを特徴とする粉末送給装置。 In a powder feeding device that mixes and feeds two different types of powder materials using a carrier gas, there is an outer tube into which one type of powder material is fed from the top, and an outer tube into which the other type of powder material is fed from the top. 1. A powder feeding device comprising: an inner tube; and a spiral fin attached to a gap between the outer tube and the inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17760484U JPH027643Y2 (en) | 1984-11-22 | 1984-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17760484U JPH027643Y2 (en) | 1984-11-22 | 1984-11-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6195469U JPS6195469U (en) | 1986-06-19 |
| JPH027643Y2 true JPH027643Y2 (en) | 1990-02-23 |
Family
ID=30735175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17760484U Expired JPH027643Y2 (en) | 1984-11-22 | 1984-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH027643Y2 (en) |
-
1984
- 1984-11-22 JP JP17760484U patent/JPH027643Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6195469U (en) | 1986-06-19 |
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