CN102560320A - Detonation gun spraying method of tungsten carbide - Google Patents
Detonation gun spraying method of tungsten carbide Download PDFInfo
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- CN102560320A CN102560320A CN2012100017747A CN201210001774A CN102560320A CN 102560320 A CN102560320 A CN 102560320A CN 2012100017747 A CN2012100017747 A CN 2012100017747A CN 201210001774 A CN201210001774 A CN 201210001774A CN 102560320 A CN102560320 A CN 102560320A
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- powder
- acetylene
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- flame spraying
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Abstract
The invention discloses a detonation gun spraying method of tungsten carbide. The method comprises the following steps: adjusting the technological parameters of tungsten carbide powder, adjusting the intake speeds of oxygen and acetylene, adjusting the parameters of detonation gun spraying, performing detonation gun spraying, cleaning a gun barrel, performing fine machining, and the like. By adopting the method, the structure uniformity of a coating and the bonding force of the coating and a matrix can be effectively enhanced and the localization of a blade pin special tungsten carbide coating spraying technology can be realized.
Description
Technical field
The invention belongs to field of surface treatment, relate to a kind of metal spraying technology.
Background technology
Explosive spray coating comes from U.S. combinating carbide company the earliest.The said firm has developed detonation flame spraying the fifties in last century, develops into Super D-Gun high-performance spray through upgrading afterwards.But the said firm is in confidential state with this technology always, does not externally sell equipment, only external spray process, and a lot of aircraft engine parts of the U.S. have adopted explosive spray coating at present, and the said firm has set up a lot of spraying standards, for example LW-1N40 coating.
Except that the U.S. (Praxair) company; The FSU and Ukraine have also developed explosive spray coating in succession in the eighties in last century; Though the spraying principle is identical, but adopt simple automatic powder feeding system continuously, the coating of acquisition is because the explosion time powder is dispersed in the explosion tube different positions; Coating structure is inhomogeneous, and bonding strength is low.
Summary of the invention
The object of the invention: realize the extraordinary tungsten carbide coating spraying coating process production domesticization of blade pin as early as possible, research blade pin detonation flame spraying LW1N40 tungsten carbide coating process method.
Technical scheme of the present invention: a kind of method of detonation flame spraying wolfram varbide; Comprise steps such as adjusting tungsten-carbide powder processing parameter, the intake velocity of regulating oxygen and acetylene, adjusting detonation flame spraying parameter, detonation flame spraying, cleaning gun barrel, precision work, concrete steps and processing parameter are following:
1) regulates the tungsten-carbide powder processing parameter
Powder requires: 300-400 purpose sintering WC-9Co powder
Powder sending quantity: 95-105g/min
Addition a: 3-5kg
Powder feeder control angle: 120 °
Automatic powder feeding system: intermittently powder feeding
2) intake velocity of adjusting oxygen and acetylene
Oxygen: 50L/min
Acetylene: 40L/min
Mixed gas: 50L/min
Powder feeding gas: 30L/min
3) regulate the detonation flame spraying parameter
Blast frequency: 6 times/second
Blast bore: 25mm
Explosive distance: 120mm
Translational speed: 30mm/min
The speed of rotation of workpiece is: 15rpm
4) use frock that blade pin to be sprayed is fixed on the position apart from muzzle 120mm, start detonation flame spraying equipment, divided for four steps accomplished detonation flame spraying:
A. oxygen and the acetylene with certain pressure, ratio feeds the water cooled lance inner chamber by inlet mouth,
B. by powder supply port tungsten-carbide powder is sent into
C. plug ignition, the mixed gas burning of oxygen and acetylene and blast produce the high temperature and high speed air-flow, and powder is heated to molten state, and strike substrate surface (to surpass about 3 times of velocity of sound) at a high speed, form coating
D. feed nitrogen cleaning gun barrel, for spraying is next time prepared.
5) according to the coat-thickness requirement, decision spraying number of times.
6) use the precision work grinding machine to carry out grinding, coat-thickness is met design requirement.
Advantage of the present invention: the present invention has effectively improved the homogeneity of coating structure and the bonding force of coating and matrix, has realized the extraordinary tungsten carbide coating spraying coating process production domesticization of blade pin.
Embodiment
Below in conjunction with embodiment the present invention is described further:
The concrete operation of a certain embodiment is following:
1) measuring engine adds the right alignment of back blade pin, uses plumbous adhesive tape to carry out right alignment according to measuring result and proofreaies and correct.
2) use frock fixed blades pin in the position of regulation, prepare to carry out the wolfram varbide spraying.
3) regulate the tungsten-carbide powder processing parameter:
Powder requires: 300-400 purpose sintering WC-9Co powder
Powder sending quantity: 100g/min
Addition a: 3-5kg
Powder feeder control angle: 120 °
Automatic powder feeding system: intermittently powder feeding
4) intake velocity of adjusting oxygen and acetylene
Oxygen: 50L/min
Acetylene: 40L/min
Mixed gas: 50L/min
Powder feeding gas: 30L/min
5) regulate the detonation flame spraying parameter
Blast frequency: 6 times/second
Blast bore: 25mm
Explosive distance: 120mm
Translational speed: 30mm/min
The speed of rotation of workpiece is: 15rpm
Control coating thickness: 0.15-0.2mm
6) start detonation flame spraying equipment, divided for four steps accomplished detonation flame spraying:
A. oxygen and the acetylene with certain pressure, ratio feeds the water cooled lance inner chamber by inlet mouth,
B. by powder supply port tungsten-carbide powder is sent into
C. plug ignition, the mixed gas burning of oxygen and acetylene and blast produce the high temperature and high speed air-flow, and powder is heated to molten state, and strike substrate surface (to surpass about 3 times of velocity of sound) at a high speed, form coating.
D. feed nitrogen cleaning gun barrel, for spraying is next time prepared.
7) according to the coat-thickness requirement, decision spraying number of times.
8) use the precision work grinding machine to carry out grinding, coat-thickness is met design requirement.
9) according to the outward appearance of the blade pin after the drawing check processing, size reaches whether there is defective.
The present invention has effectively improved the homogeneity of coating structure and the bonding force of coating and matrix, has realized the extraordinary tungsten carbide coating spraying coating process production domesticization of blade pin.
The performance index of the coating that below for this reason obtains according to present method production:
Claims (1)
1. the method for a detonation flame spraying wolfram varbide; Comprise steps such as adjusting tungsten-carbide powder processing parameter, the intake velocity of regulating oxygen and acetylene, adjusting detonation flame spraying parameter, detonation flame spraying, cleaning gun barrel, precision work; It is characterized in that concrete steps and processing parameter are following:
1) regulates the tungsten-carbide powder processing parameter
Powder requires: 300-400 purpose sintering WC-9Co powder
Powder sending quantity: 95-105g/min
Addition a: 3-5kg
Powder feeder control angle: 120 °
Automatic powder feeding system: intermittently powder feeding
2) intake velocity of adjusting oxygen and acetylene
Oxygen: 50L/min
Acetylene: 40L/min
Mixed gas: 50L/min
Powder feeding gas: 30L/min
3) regulate the detonation flame spraying parameter
Blast frequency: 6 times/second
Blast bore: 25mm
Explosive distance: 120mm
Translational speed: 30mm/min
The speed of rotation of workpiece is: 15rpm
4) use frock that blade pin to be sprayed is fixed on the position apart from muzzle 120mm, start detonation flame spraying equipment, divided for four steps accomplished detonation flame spraying:
A. oxygen and the acetylene with certain pressure, ratio feeds the water cooled lance inner chamber by inlet mouth,
B. by powder supply port tungsten-carbide powder is sent into
C. plug ignition, the mixed gas burning of oxygen and acetylene and blast produce the high temperature and high speed air-flow, and powder is heated to molten state, and strike substrate surface (to surpass about 3 times of velocity of sound) at a high speed, form coating
D. feed nitrogen cleaning gun barrel, for spraying is next time prepared.
5) according to the coat-thickness requirement, decision spraying number of times.
6) use the precision work grinding machine to carry out grinding, coat-thickness is met design requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100017747A CN102560320A (en) | 2012-01-05 | 2012-01-05 | Detonation gun spraying method of tungsten carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100017747A CN102560320A (en) | 2012-01-05 | 2012-01-05 | Detonation gun spraying method of tungsten carbide |
Publications (1)
| Publication Number | Publication Date |
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| CN102560320A true CN102560320A (en) | 2012-07-11 |
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| CN2012100017747A Pending CN102560320A (en) | 2012-01-05 | 2012-01-05 | Detonation gun spraying method of tungsten carbide |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264098A (en) * | 2014-09-15 | 2015-01-07 | 广东新劲刚新材料科技股份有限公司 | Preparation method of explosion spraying tungsten carbide wear-resistant coating |
| CN106513659A (en) * | 2015-10-29 | 2017-03-22 | 中国航空工业集团公司北京航空材料研究院 | Preparation method for graphene-modified self-lubricating wear-resistant coating |
| CN109112465A (en) * | 2018-08-17 | 2019-01-01 | 国营芜湖机械厂 | A kind of novel undercarriage Shaft of Titanium Alloy remanufactures repair method |
| CN109773598A (en) * | 2019-03-15 | 2019-05-21 | 烟台卓范精密机械设备有限公司 | A kind of production method of scraper |
| CN110592520A (en) * | 2019-09-09 | 2019-12-20 | 中国人民解放军第五七一九工厂 | Remanufacturing and repairing method for blade boss of aero-engine compressor |
| CN112063961A (en) * | 2020-09-11 | 2020-12-11 | 深圳大学 | Preparation method of high-entropy alloy coating |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2714563A (en) * | 1952-03-07 | 1955-08-02 | Union Carbide & Carbon Corp | Method and apparatus utilizing detonation waves for spraying and other purposes |
-
2012
- 2012-01-05 CN CN2012100017747A patent/CN102560320A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2714563A (en) * | 1952-03-07 | 1955-08-02 | Union Carbide & Carbon Corp | Method and apparatus utilizing detonation waves for spraying and other purposes |
Non-Patent Citations (2)
| Title |
|---|
| 杨德明: "爆炸喷涂碳化钨涂层工艺及性能研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
| 谢光荣: "第聂泊-3型爆炸喷涂设备技术性能研究", 《机械开发》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264098A (en) * | 2014-09-15 | 2015-01-07 | 广东新劲刚新材料科技股份有限公司 | Preparation method of explosion spraying tungsten carbide wear-resistant coating |
| CN104264098B (en) * | 2014-09-15 | 2016-08-17 | 广东新劲刚新材料科技股份有限公司 | Preparation method of explosion spraying tungsten carbide wear-resistant coating |
| CN106513659A (en) * | 2015-10-29 | 2017-03-22 | 中国航空工业集团公司北京航空材料研究院 | Preparation method for graphene-modified self-lubricating wear-resistant coating |
| CN109112465A (en) * | 2018-08-17 | 2019-01-01 | 国营芜湖机械厂 | A kind of novel undercarriage Shaft of Titanium Alloy remanufactures repair method |
| CN109773598A (en) * | 2019-03-15 | 2019-05-21 | 烟台卓范精密机械设备有限公司 | A kind of production method of scraper |
| CN110592520A (en) * | 2019-09-09 | 2019-12-20 | 中国人民解放军第五七一九工厂 | Remanufacturing and repairing method for blade boss of aero-engine compressor |
| CN112063961A (en) * | 2020-09-11 | 2020-12-11 | 深圳大学 | Preparation method of high-entropy alloy coating |
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Application publication date: 20120711 |