JPS6439360A - Treatment for internal tube surface - Google Patents
Treatment for internal tube surfaceInfo
- Publication number
- JPS6439360A JPS6439360A JP62192628A JP19262887A JPS6439360A JP S6439360 A JPS6439360 A JP S6439360A JP 62192628 A JP62192628 A JP 62192628A JP 19262887 A JP19262887 A JP 19262887A JP S6439360 A JPS6439360 A JP S6439360A
- Authority
- JP
- Japan
- Prior art keywords
- coating layer
- internal tube
- tube surface
- corrosion resistance
- plasma
- 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.)
- Pending
Links
- 239000011247 coating layer Substances 0.000 abstract 5
- 238000005260 corrosion Methods 0.000 abstract 3
- 230000007797 corrosion Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 239000000498 cooling water Substances 0.000 abstract 1
- 238000010891 electric arc Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000007750 plasma spraying Methods 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
PURPOSE:To improve corrosion resistance at an internal tube surface, by forming a coating layer on the internal tube surface by means of plasma spraying and then applying fusing to the surface of the above coating layer. CONSTITUTION:A plasma gas and cooling water are fed to a plasma torch 2 located in a tube 1 to be treated and a metal powder having superior corrosion resistance is also fed to the torch 2, and then, a high voltage is impressed by using a tungsten electrode 3 as an anode and also using the tube 1 as a cathode. As a result, arc discharge occurs and a plasma frame 4 is produced, by which the powder is melted and thermally sprayed on the internal tube surface to form a coating layer 7. Subsequently, a laser beam 8 is applied from a laser head 6 on the above coating layer 7 to fuse the surface of the coating layer 7, by which a fused layer 9 having dense surface is formed. By this method, corrosion resistance at the internal tube surface can be improved, and further, this method is applicable to the partial repair, etc., of a small- diameter tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62192628A JPS6439360A (en) | 1987-08-03 | 1987-08-03 | Treatment for internal tube surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62192628A JPS6439360A (en) | 1987-08-03 | 1987-08-03 | Treatment for internal tube surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6439360A true JPS6439360A (en) | 1989-02-09 |
Family
ID=16294411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62192628A Pending JPS6439360A (en) | 1987-08-03 | 1987-08-03 | Treatment for internal tube surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6439360A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05255832A (en) * | 1992-03-13 | 1993-10-05 | Hitachi Ltd | Surface modification method of structure and wire explosion spraying device |
| EP0834599A1 (en) * | 1996-09-26 | 1998-04-08 | Günter Hackerodt | Process for coating inner sliding surfaces of cylinders, especially aluminium surfaces |
| EP0837152A1 (en) * | 1996-10-18 | 1998-04-22 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Process for coating an aluminium alloy device of an internal combustion engine with silicon |
| JP2000087211A (en) * | 1998-09-17 | 2000-03-28 | Dai Ichi High Frequency Co Ltd | High frequency remelting treatment method and device |
| US6719847B2 (en) | 2002-02-20 | 2004-04-13 | Cinetic Automation Corporation | Masking apparatus |
| JP2015512786A (en) * | 2012-02-10 | 2015-04-30 | リモ パテントフェルヴァルトゥング ゲーエムベーハー ウント コー．カーゲーＬＩＭＯ Ｐａｔｅｎｔｖｅｒｗａｌｔｕｎｇ ＧｍｂＨ ＆ Ｃｏ．ＫＧ | Apparatus for processing the surface of a workpiece or for post-processing a coating on the outer or inner surface of the workpiece |
-
1987
- 1987-08-03 JP JP62192628A patent/JPS6439360A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05255832A (en) * | 1992-03-13 | 1993-10-05 | Hitachi Ltd | Surface modification method of structure and wire explosion spraying device |
| EP0834599A1 (en) * | 1996-09-26 | 1998-04-08 | Günter Hackerodt | Process for coating inner sliding surfaces of cylinders, especially aluminium surfaces |
| EP0837152A1 (en) * | 1996-10-18 | 1998-04-22 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Process for coating an aluminium alloy device of an internal combustion engine with silicon |
| JP2000087211A (en) * | 1998-09-17 | 2000-03-28 | Dai Ichi High Frequency Co Ltd | High frequency remelting treatment method and device |
| US6719847B2 (en) | 2002-02-20 | 2004-04-13 | Cinetic Automation Corporation | Masking apparatus |
| JP2015512786A (en) * | 2012-02-10 | 2015-04-30 | リモ パテントフェルヴァルトゥング ゲーエムベーハー ウント コー．カーゲーＬＩＭＯ Ｐａｔｅｎｔｖｅｒｗａｌｔｕｎｇ ＧｍｂＨ ＆ Ｃｏ．ＫＧ | Apparatus for processing the surface of a workpiece or for post-processing a coating on the outer or inner surface of the workpiece |
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