CN104549820A - Block-prevention micro-spray gun system of quartz-metal composite structure - Google Patents
Block-prevention micro-spray gun system of quartz-metal composite structure Download PDFInfo
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- CN104549820A CN104549820A CN201410830656.6A CN201410830656A CN104549820A CN 104549820 A CN104549820 A CN 104549820A CN 201410830656 A CN201410830656 A CN 201410830656A CN 104549820 A CN104549820 A CN 104549820A
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- micro
- spray gun
- gun
- straight tube
- quartz
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
Abstract
The invention relates to a block-prevention micro-spray gun system of a quartz-metal composite structure, which comprises a micro-spray gun, wherein the front end of the micro-spray gun is connected with a powder-feeding hose connector which is provided with a gasket in advance through a micro-spray gun bracket. The powder-feeding hose connector is connected with a powder-feeding hose, and the rear end of the micro-spray gun is connected with a system bracket which is provided with the gasket in advance through a fastener. The micro-spray gun is manufactured according to a method for heating quartz material at high temperatures. The front end of the micro-spray gun is a first straight pipe, the rear end is a second straight pipe, and the part between the first straight pipe and the second straight pipe is a contraction section. The first straight pipe, the contraction section and the second straight pipe form a contraction-straight wall structure. High pressure carrier gas which carries micro-sized-particle sized powder particles can enter the first straight pipe of the micro-spray gun through the powder-feeding hose, and then is sprayed from the contraction section and the second straight pipe. The block-prevention micro-spray gun system of the quartz-metal composite structure greatly reduces the blocking probability of the micro-sized straight-pipe spray gun while guaranteeing a high spatial resolution.
Description
Technical field
The invention belongs to the increasing material manufacturing technology field based on particle high velocity jet, be specifically related to the micro-gun system of a kind of quartz metal composite construction anti-clogging.
Background technology
At present, increase material Manufacturing Technology Development rapid, just towards the quick manufacturing direction development of integration of multifunction many materials parts with complex structures.And the 3 D auto synchronously completing multiple material parts with complex structures is shaped, processing technology must break away from the restriction of material melting point, and this makes the hot processing technology of solidifying again based on particles fuse become no longer applicable.On the contrary, cool grinding technique is the combination being realized particle or sheet material under lower than the technological temperature of material melting point by plastic deformation, is shaped while realizing the larger dissimilar materials of fusing point difference.Typical process has cold spraying forming technology, and in this technical process, metal or non-metallic particle high-speed impact working surface under the condition higher than its " critical deposition velocity ", produces " adia-batic shear instability " effect, forms deposition.And " critical deposition velocity " is generally hundreds of metre per second (m/s).
Metal or non-metallic particle are accelerated to so high speed, in most research, all uses Lavalle spray gun.Lavalle spray gun, by the change of its cross-sectional constriction further expansion, completes air-flow from subsonic speed to supersonic acceleration.But due to the existence of expansion segment, the outlet size of spray gun is comparatively large, and the dispersion of the particle beams can not control, and its spatial resolution is lower, independently can not control forming accuracy.The people such as Pattison utilize this spray gun to deposited Ti hemisphere, but drip molding precision is controlled by mould, and non-3 D auto is shaped.
If this cool grinding process modification is increased material manufacturing technology as one, process system must be made independently to control forming accuracy.Therefore must improve spray gun structure, make it while possessing high acceleration, the dispersion of the particle beams can be controlled.The people such as Alexey Sova utilize the medical needle tubing of internal diameter 0.5mm when straight tube spray gun carried out copper powder deposition Primary Study, helium is utilized to define 1mm under normal temperature under 4.0MPa wide, thickness only has the straight line of 20um-30um to deposit, in an experiment, although be adjusted to by powder sending quantity very low, still there is the situation that spray gun blocks.And when utilizing microsize spray gun (outlet diameter is less than 1mm) to realize the acceleration of micro-sized metal particle, spray gun blockage problem is common and is difficult to avoid.It proposes to need special powder feeder customized to solve blockage problem.
Microsize straight tube spray gun has enough accelerations and spatial resolution, ensure that particle high velocity jet is as a kind of required precision increasing manufacture process, but it very easily blocks, and causes very large adverse effect to the stability of technique.Therefore, be badly in need of solving the susceptible to plugging difficult problem of microsize straight tube spray gun based on the increasing manufacture process of particle high velocity jet at present.The way cost of special powder feeder customized is comparatively large, and reduces powder sending quantity and utilize powder separator to slow down the stopping state of spray gun, is not easy to the mechanism studying spray gun blocking, fundamentally can not solves the generation of blocking.The most reasonable approach in it is possible to solve this problem by the structural design of micro-spray gun itself.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide the micro-gun system of a kind of quartz metal composite construction anti-clogging, be mainly used in the increasing manufacture process of particle high velocity jet, the following powder size of pressure 4MPa is the acceleration of the Dual-Phrase Distribution of Gas olid of 0-100um, it significantly reduces the blocking probability of microsize straight tube spray gun while ensureing high spatial resolution.
In order to achieve the above object, the technical scheme that the present invention takes is:
The micro-gun system of a kind of quartz metal composite construction anti-clogging, comprise micro-spray gun 4, the male end of micro-gun stand 7 props up micro-spray gun 4 front end flange 4-1, sealing ring 5 is provided with between the front end flange 4-1 of micro-spray gun 4 and the male end of micro-gun stand 7, micro-gun stand 7 is through the endoporus of securing member 6, securing member 6 props up the axle collar 7-1 of micro-gun stand 7, the front end of micro-spray gun 4 to be exported with the powder feeding hose coupling 2 that the first pad 3 is housed in advance by the external screw thread of micro-gun stand 7 and is connected, powder feeding hose coupling 2 entrance is connected with powder feeding flexible pipe 1, the rear end of micro-spray gun 4 is connected with system frame 9 external screw thread that the second pad 8 is housed in advance by the internal thread of securing member 6, micro-spray gun 4 adopts quartz material to pass through the hot worked method manufacture of high temperature.
The front end of described micro-spray gun 4 is the first straight tube I, and rear end is between the second straight tube III, first straight tube I and the second straight tube III be contraction section II, and the first straight tube I, contraction section II, second straight tube III form contraction-straight wall construction jointly; Second straight tube III internal diameter is 0.1mm-1mm, and length is 20mm-80mm.
The powder attachment on inwall removed by described micro-spray gun 4 by ultrasonic wave water washing, ensure the work of its long-term stability.
Described powder feeding hose coupling 2, securing member 6, micro-gun stand 7 are made by metal material with system frame 9.
Described micro-gun stand 7 is screwed by fine thread with powder feeding hose coupling 2, and the first pad 3 clamps micro-spray gun 4 front end flange 4-1 with sealing ring 5 in both sides, ensure the air-tightness of micro-spray gun 4.
The first described pad 3 and the second pad 8 all adopt elastomeric material.
Compared with prior art, the present invention has following useful technique effect:
The present invention makes micro-spray gun 4 owing to have employed quartz material, make use of the flow conductivity of quartz material, significantly reduces the blocking probability of microsize straight tube spray gun; Make use of the transparency of quartz material, make the convenient adhesion condition observing metallic particles on micro-spray gun 4 inwall, thus analyze the reason of blocking, the dimensional structure design of the micro-spray gun 4 of one-step optimization of going forward side by side; Utilize capillary quartz ampoule can the characteristic of ultrasonic wave water washing, make micro-spray gun 4 remove inwall attaching particles by ultrasonic wave water washing, ensure its long-term stable operation.
The present invention is owing to have employed micro-spray gun 4 of quartz material contraction-straight wall construction, make use of quartz material high-temperature hot processing technology, the most low energy of the internal diameter of the second straight tube III of micro-spray gun 4 is made to accomplish 0.1mm, the elongated hole manufactured than conventional metals processing technology is thinner, while the high acceleration of the micro-spray gun 4 of guarantee, further increase its spatial resolution, have to utilize and improve craft precision; Meanwhile, the first straight tube I, the endoporus transition of contraction section II and the second straight tube III is more mild, further reduces blocking probability.
The present invention is owing to will adopt micro-spray gun 4 of quartz material manufacture to be assembled with system frame 9 with adopting the powder feeding hose coupling 2 of metal material manufacture, micro-gun stand 7, securing member 6 simultaneously, solve quartz construction part intensity low, frangible, be difficult to the intrinsic problem be reliably linked and packed; Adding of first pad 3, sealing ring 5 and the second pad 8, ensure that the air-tightness of the micro-gun system of quartz metal composite construction, and buffer protection has been carried out to quartz construction part.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of micro-spray gun 4.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to Fig. 1, the micro-gun system of a kind of quartz metal composite construction anti-clogging, comprise micro-spray gun 4, the male end of micro-gun stand 7 props up micro-spray gun 4 front end flange 4-1, sealing ring 5 is provided with between the front end flange 4-1 of micro-spray gun 4 and the male end of micro-gun stand 7, micro-gun stand 7 is through the endoporus of securing member 6, securing member 6 props up the axle collar 7-1 of micro-gun stand 7, the front end of micro-spray gun 4 to be exported with the powder feeding hose coupling 2 that the first pad 3 is housed in advance by the external screw thread of micro-gun stand 7 and is connected, powder feeding hose coupling 2 entrance is connected with powder feeding flexible pipe 1, the rear end of micro-spray gun 4 is connected with system frame 9 external screw thread that the second pad 8 is housed in advance by the internal thread of securing member 6, add rigidity, reduce the impact of impact shock on micro-spray gun 4 of quartz material, micro-spray gun 4 adopts quartz material to pass through the hot worked method manufacture of high temperature, make full use of the flow conductivity of quartz material, micro-spray gun inner wall smooth, reduce the flow resistance of powder particle in micro-spray gun, thus significantly reduce the blocking probability of microsize straight tube spray gun, make full use of the transparency of quartz material, convenient the attachment area of powder particle in micro-spray gun to be observed, analyze deficiency that micro-spray gun dimensional structure designs and be optimized.
With reference to Fig. 2, the front end of described micro-spray gun 4 is the first straight tube I, and rear end is between the second straight tube III, first straight tube I and the second straight tube III be contraction section II, and the first straight tube I, contraction section II, second straight tube III form contraction-directly wall construction jointly; Second straight tube III internal diameter is 0.1mm-1mm, and length is 20mm-80mm; Minimum diameter can accomplish 0.1mm, the elongated hole internal diameter manufactured than conventional metals processing technology is less, micro-spray gun spatial resolution is higher, and Dual-Phrase Distribution of Gas olid is when through micro-spray gun contraction section II, the bounce-back of particle encounter inwall forms larger radial velocity component, designed micro-spray gun second straight tube III segment length is longer, particle increases at the bounce-back number of times of this section, radial velocity component reduces, along with acceleration and the promotion of follow-up air-flow, its axial velocity component increases, and is conducive to the acceleration of particle and controls the width of the particle beams further.
The powder attachment on inwall removed by described micro-spray gun 4 by ultrasonic wave water washing, ensure the work of its long-term stability.
Described powder feeding hose coupling 2, securing member 6, micro-gun stand 7 are made by metal material with system frame 9.Metal material ensure that the intensity that micro-gun system is enough, rigidity, and hardware is convenient to be linked and packed, and solves quartz construction part intensity low, frangible, is difficult to the intrinsic problem be reliably linked and packed.
Described micro-gun stand 7 is screwed by fine thread with powder feeding hose coupling 2, and the first pad 3 clamps micro-spray gun 4 front end flange 4-1 with sealing ring 5 in both sides, while fixing micro-spray gun 4, ensure that its air-tightness.
The first described pad 3 and the second pad 8 all adopt elastomeric material, avoid quartz construction part and contact with the direct of hardware, carried out available protecting to micro-spray gun 4 of quartz material in assembling process.
Operation principle of the present invention is:
The high pressure carrier gas of carrying micron particle size powder particle enters the first straight tube I of micro-spray gun 4 by powder feeding flexible pipe 1, then spray through contraction section II, second straight tube III, micro-gun stand 7 is screwed by common fine thread with powder feeding hose coupling 2, the sealing ring 5 of promotion elastomeric material and the first pad 3 extrude the front end flange 4-1 of micro-spray gun 4 from two ends, ensure that enough air-tightness, make high pressure gas fixed double phase flow can only enter micro-spray gun 4 from the first straight tube I section, and accelerate at contraction section II and the second straight tube III section.
Micro-spray gun 4 inner wall smooth of quartz material, reduces the flow resistance of powder particle in micro-spray gun 4, improves the adhesion condition of powder particle at micro-spray gun 4 inwall, thus significantly reduces the blocking probability of microsize straight tube spray gun.Dual-Phrase Distribution of Gas olid is when the contraction section II of micro-spray gun 4, the bounce-back of particles collision inwall forms larger radial velocity component, and the second straight tube III section is longer, particle increases at the bounce-back number of times of this section, radial velocity component reduces, along with acceleration and the promotion of follow-up air-flow, its axial velocity component increases, and is conducive to the acceleration of particle and the dispersion controlling particle.Second straight tube III section internal diameter is less, controls the width of exit particle beam further.Gas-particle two-phase flows through after micro-spray gun 4 completes acceleration, and high velocity jet substrate forms deposition.
After completing Particle Acceleration, take out micro-spray gun 4, the adhesion condition of powder particle on its inwall is analyzed, if particle adhesion condition is serious, mainly through improving contraction section II gradient of micro-spray gun 4 and curvature.In order to ensure the long-time stable work of micro-spray gun 4, in experiment gap, ultrasonic wave water washing is carried out to it.
Claims (6)
1. the micro-gun system of quartz metal composite construction anti-clogging, comprise micro-spray gun (4), it is characterized in that: the male end of micro-gun stand (7) props up micro-spray gun (4) front end flange (4-1), sealing ring (5) is provided with between the front end flange (4-1) of micro-spray gun (4) and the male end of micro-gun stand (7), micro-gun stand (7) is through the endoporus of securing member (6), securing member (6) props up the axle collar (7-1) of micro-gun stand (7), the front end of micro-spray gun (4) to be exported with the powder feeding hose coupling (2) that the first pad (3) is housed in advance by the external screw thread of micro-gun stand (7) and is connected, powder feeding hose coupling (2) entrance is connected with powder feeding flexible pipe (1), the rear end of micro-spray gun (4) is connected with system frame (9) external screw thread that the second pad (8) are housed in advance by the internal thread of securing member (6), micro-spray gun (4) adopts quartz material by the hot worked method manufacture of high temperature.
2. the micro-gun system of a kind of quartz metal composite construction according to claim 1 anti-clogging, it is characterized in that: the front end of described micro-spray gun (4) is the first straight tube (I), rear end is the second straight tube (III), be contraction section (II) between first straight tube (I) and the second straight tube (III), the first straight tube (I), contraction section (II), the second straight tube (III) form contraction-straight wall construction jointly; Second straight tube (III) internal diameter is 0.1mm-1mm, and length is 20mm-80mm.
3. the micro-gun system of a kind of quartz metal composite construction according to claim 1 anti-clogging, is characterized in that: the powder attachment on inwall removed by described micro-spray gun (4) by ultrasonic wave water washing, ensure the work of its long-term stability.
4. the micro-gun system of a kind of quartz metal composite construction according to claim 1 anti-clogging, is characterized in that: described powder feeding hose coupling (2), securing member (6), micro-gun stand (7) and system frame (9) are made by metal material.
5. the micro-gun system of a kind of quartz metal composite construction according to claim 1 anti-clogging, it is characterized in that: described micro-gun stand (7) and powder feeding hose coupling (2) are screwed by fine thread, and the first pad (3) and sealing ring (5) clamp micro-spray gun (4) front end flange (4-1) in both sides, ensure the air-tightness of micro-spray gun (4).
6. the micro-gun system of a kind of quartz metal composite construction according to claim 1 anti-clogging, is characterized in that: described the first pad (3) and the second pad (8) all adopt elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830656.6A CN104549820A (en) | 2014-12-26 | 2014-12-26 | Block-prevention micro-spray gun system of quartz-metal composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830656.6A CN104549820A (en) | 2014-12-26 | 2014-12-26 | Block-prevention micro-spray gun system of quartz-metal composite structure |
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| Publication Number | Publication Date |
|---|---|
| CN104549820A true CN104549820A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410830656.6A Pending CN104549820A (en) | 2014-12-26 | 2014-12-26 | Block-prevention micro-spray gun system of quartz-metal composite structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043309A (en) * | 2015-08-13 | 2015-11-11 | 东莞市贝德帕模具科技有限公司 | Method for measuring size of inner hole of mould |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1376164A (en) * | 1972-05-02 | 1974-12-04 | Hinckleys Silica Sands Ltd | Guns for spraying hydraulically settable abrasive material |
| NZ238299A (en) * | 1991-05-29 | 1994-03-25 | Monk Construction Ltd | Water course lining unit using cement and mesh |
| CN201950380U (en) * | 2010-11-06 | 2011-08-31 | 青岛瑞丰气体有限公司 | Protective device for gas shielded arc welding gun |
| CN202045038U (en) * | 2011-04-26 | 2011-11-23 | 安阳市凤凰光伏科技有限公司 | Silicon nitride spray gun |
| CN202818751U (en) * | 2011-11-22 | 2013-03-20 | 安捷伦科技有限公司 | Plasma torch with a plurality of inlets for guiding cooling air |
-
2014
- 2014-12-26 CN CN201410830656.6A patent/CN104549820A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1376164A (en) * | 1972-05-02 | 1974-12-04 | Hinckleys Silica Sands Ltd | Guns for spraying hydraulically settable abrasive material |
| NZ238299A (en) * | 1991-05-29 | 1994-03-25 | Monk Construction Ltd | Water course lining unit using cement and mesh |
| CN201950380U (en) * | 2010-11-06 | 2011-08-31 | 青岛瑞丰气体有限公司 | Protective device for gas shielded arc welding gun |
| CN202045038U (en) * | 2011-04-26 | 2011-11-23 | 安阳市凤凰光伏科技有限公司 | Silicon nitride spray gun |
| CN202818751U (en) * | 2011-11-22 | 2013-03-20 | 安捷伦科技有限公司 | Plasma torch with a plurality of inlets for guiding cooling air |
Non-Patent Citations (1)
| Title |
|---|
| 王海军: "《热喷涂技术问答》", 30 April 2006, 国防工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043309A (en) * | 2015-08-13 | 2015-11-11 | 东莞市贝德帕模具科技有限公司 | Method for measuring size of inner hole of mould |
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Application publication date: 20150429 |