CN101016615A - Hot spraying method - Google Patents
Hot spraying method Download PDFInfo
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- CN101016615A CN101016615A CNA2007100137396A CN200710013739A CN101016615A CN 101016615 A CN101016615 A CN 101016615A CN A2007100137396 A CNA2007100137396 A CN A2007100137396A CN 200710013739 A CN200710013739 A CN 200710013739A CN 101016615 A CN101016615 A CN 101016615A
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- sand
- torch
- blasting gun
- spraying
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Abstract
The invention discloses a hot spraying method, which comprises the following steps: connecting torch and sand-blasting gun to divide with baffle; constituting to assembled spraying torch; making the lower of baffle doers projecting to near the surface of spraying metalwork; clamping the assembled spraying torch; making the sand-blasting gun set on the front and the torch on the rear; working at the same time; keeping the tilting angle of sand-blasting gun flowing axis to forward direction at 5-10 degree; making high-pressure blast and sand vomit to angularly forward direction; making the diameter of fluid jet section to near; keeping the center of two section in central axis of the same path of movement; keeping the altitude constant between injector of torch, injector of sand-blasting gun and surface of metalwork; keeping the advance speed uniform; sand-blasting and hot-spraying company with move along of assembled spraying torch. This invention simplified the process, which can increase the productive efficiency sharply.
Description
Technical field
The present invention relates to the wear-resisting and long-effective corrosion metallic coating technology of metal component surface, relate in particular to hot-spraying techniques.
Background technology
In order to obtain wear-resisting strengthened coat and long-effective corrosion coating at metal component surface, thermospray is one of normal method that adopts.Traditional heat spraying method all is earlier sandblasting to be carried out on the metalwork surface, and then carries out thermospray.Have following two big defectives with this method production: 1, the metal component surface after the sandblast is highly cleaning and active condition, is very easy to pollution once again, oxidation, the moisture absorption in air, loss of activity, the bonding force of reduction thermally sprayed coating.Should carry out thermospray in 2 hours after the processing requirement sandblast in dry dustfree environment, the longlyest also must not surpass 4 hours, the timed interval is short more good more.But because the inter process turnover needs, the shortening in the timed interval has considerable restraint in actual production process.In the operation circular flow, even environment is dry cleaner and tidier, the active forfeiture of sand blasted surface also is unavoidable, and this has become the key point that influences the hot spray coating bonding force, and especially to the thermospray of large-scale hardware, coating bonding force problem is particularly outstanding.2, thermal spray process is back and forth carried out, after the spraying of first road, the coating road that forms is uneven, road intermediate absorption heat is big, powder or the fusing of silk material are fully, the jet velocity height, the coating even compact bonding force of formation is big, and the both sides temperature in road is low, powder or the fusing of silk material are insufficient, jet velocity is low, and except part bounce-back was scattered and disappeared, some formed loose in conjunction with unstable coating, when reciprocal spraying overlaps second road, below this tectorium is coated over, directly influence the bonding force and the compactness of the second road coating and metal component surface, thereby had influence on the effect and the usefulness of whole coating.
Summary of the invention
The objective of the invention is the timed interval between sandblasting and the thermospray is shortened to the shortest, reduce the influence of environment to greatest extent, original sandblasting of separating and thermospray operation are merged together synchronously carry out, a kind of brand-new heat spraying method is provided.
Spraying method of the present invention is:
1, separating the formation combination spray torch that links together with dividing plate between torch and the sand-blasting gun, the dividing plate lower ends downward is stretched out near the metalwork surface that is sprayed;
2, clamping combination spray torch, sand-blasting gun is preceding, torch after, carry out work simultaneously, and keep the angle of sand-blasting gun jet axis forward direction deflection 5-10 degree, make the oblique a little working direction ejection of high-pressure blast and sand, require the jet area diameter of torch and sand-blasting gun to be close, two kernel of section should guarantee to be on the axis of same forward movement rule mark, and the height on torch nozzle and sand-blasting gun nozzle distance metalwork surface should remain unchanged, and the progressive movement velocity will remain uniformity; Along with moving forward of combination spray torch, limit sandblast limit thermospray forms the sprayed coating with base metal spare mortise;
Positively effect of the present invention is:
1, can obtain reliable high-bond thermally sprayed coating.
2, reduce timed interval between sandblast and the thermospray to greatest extent, the influence of environment has been reduced to minimum, avoided the secondary pollution oxidation after the sandblast.
3, simplified operation, sandblast and thermospray are once finished, production efficiency significantly improves.
4, after the spraying of thermospray first road, when back and forth spraying overlaps second road, the sand-blasting gun of combination spray torch can be destroyed the tectorium at preceding one edge, does not influence the bonding force and the compactness of the second road coating and metal component surface, thereby obtains the coating of whole fine and close high-bonds.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention.
The 1-torch, 2-dividing plate, 3-sand-blasting gun, 4-mechanical grip arm, 5-metalwork.
Embodiment
Narrate specific implementation method of the present invention with reference to Fig. 1.
1, thermospray torch 1 and sand-blasting gun 3 are linked together by mechanical grip arm 4 constitute combination spray torch, during connection, separate with dividing plate 2 between torch 1 and the sand-blasting gun 3, the lower ends downward of dividing plate 2 is stretched out and near metalwork 5 surfaces, to prevent sandblast and spraying mixing; ,
2, mechanical grip combination spray torch, sand-blasting gun 3 is preceding, torch 1 after, carry out work simultaneously, and the angle that keeps sand-blasting gun 3 jet axis forward direction deflection α=5～10 to spend, make the oblique a little working direction ejection of high-pressure blast and sand, along with moving forward of combination spray torch, limit sandblast limit thermospray forms the sprayed coating with base metal spare mortise; The jet area diameter of torch 1 and sand-blasting gun 3 should be close, two kernel of section should guarantee to be on the axis of same forward movement rule mark, the height on torch nozzle and sand-blasting gun nozzle distance metalwork surface should remain unchanged, and the progressive movement velocity will remain uniformity.
If the metalwork through sandblast pretreatment is implemented the present invention again, better effects if, and can reduce to inter process interval and environment requirement available less sandblast blast of while and sandblast amount.
Claims (1)
1, a kind of heat spraying method, it is realized by following steps:
(1) separating the formation combination spray torch that links together with dividing plate between torch and the sand-blasting gun, the dividing plate lower ends downward is stretched out near the metalwork surface that is sprayed;
(2) clamping combination spray torch, sand-blasting gun is preceding, torch after, carry out work simultaneously, and keep the angle of sand-blasting gun jet axis forward direction deflection 5-10 degree, make the oblique a little working direction ejection of high-pressure blast and sand, require the jet area diameter of torch and sand-blasting gun to be close, two kernel of section should guarantee to be on the axis of same forward movement rule mark, and the height on torch nozzle and sand-blasting gun nozzle distance metalwork surface should remain unchanged, and the progressive movement velocity will remain uniformity; Along with moving forward of combination spray torch, limit sandblast limit thermospray forms the sprayed coating with base metal spare mortise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100137396A CN101016615A (en) | 2007-02-28 | 2007-02-28 | Hot spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100137396A CN101016615A (en) | 2007-02-28 | 2007-02-28 | Hot spraying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101016615A true CN101016615A (en) | 2007-08-15 |
Family
ID=38725839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100137396A Pending CN101016615A (en) | 2007-02-28 | 2007-02-28 | Hot spraying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101016615A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105209179A (en) * | 2013-05-17 | 2015-12-30 | 3M创新有限公司 | Easy-clean surface and method of making the same |
| CN107151777A (en) * | 2017-05-11 | 2017-09-12 | 中国人民解放军装甲兵工程学院 | The hot-spraying coating manufacturing process that sprayed on material is implemented in combination with bombardment particle phase |
| CN111958504A (en) * | 2020-08-11 | 2020-11-20 | 水利部产品质量标准研究所 | Efficient thermal spraying process curved surface track cooperative, intelligent and environment-friendly automatic sand blasting device and method |
-
2007
- 2007-02-28 CN CNA2007100137396A patent/CN101016615A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105209179A (en) * | 2013-05-17 | 2015-12-30 | 3M创新有限公司 | Easy-clean surface and method of making the same |
| US10293449B2 (en) | 2013-05-17 | 2019-05-21 | 3M Innovative Properties Company | Easy-clean surface and method of making the same |
| CN107151777A (en) * | 2017-05-11 | 2017-09-12 | 中国人民解放军装甲兵工程学院 | The hot-spraying coating manufacturing process that sprayed on material is implemented in combination with bombardment particle phase |
| CN111958504A (en) * | 2020-08-11 | 2020-11-20 | 水利部产品质量标准研究所 | Efficient thermal spraying process curved surface track cooperative, intelligent and environment-friendly automatic sand blasting device and method |
| CN111958504B (en) * | 2020-08-11 | 2022-02-08 | 水利部产品质量标准研究所 | Automatic sand blasting device and method with cooperation of curved surface tracks in thermal spraying process |
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Open date: 20070815 |