CN209598210U - A kind of atomization of close coupling is let slip a remark system - Google Patents
A kind of atomization of close coupling is let slip a remark system Download PDFInfo
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- CN209598210U CN209598210U CN201920247822.8U CN201920247822U CN209598210U CN 209598210 U CN209598210 U CN 209598210U CN 201920247822 U CN201920247822 U CN 201920247822U CN 209598210 U CN209598210 U CN 209598210U
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Abstract
The utility model discloses a kind of close coupling to be atomized system of leting slip a remark, and belongs to gas-atomized powder technical field.Including leting slip a remark, diversion pipe, filled layer, graphite inner sleeve, graphite housing, collet, it is described let slip a remark top connection diversion pipe；It is matched outside the diversion pipe with graphite inner sleeve；Outside the diversion pipe and gap of graphite inner sleeve is filled layer；The graphite outside of inner cover is matched with graphite housing；The graphite housing and leting slip a remark is fixed by collet.Under the premise of guaranteeing the stability of flow of metal liquid stream, wherein the outer diameter of diversion pipe, filled layer, graphite inner sleeve and graphite housing designs according to a certain percentage, the Proportionality design meets thermodynamic (al) HEAT TRANSFER LAW, by the molten metal of tundish flow nozzle system, temperature change is no more than 50 DEG C, and pyroconductivity is low, temperature gradient variation is small, heat waste consumption is effectively reduced, insulation effect is played to molten metal, solves the problems, such as that molten metal causes to let slip a remark because of temperature reduction and blocks.
Description
Technical field
The utility model belongs to gas-atomized powder technical field, and leting slip a remark more specifically to a kind of atomization of close coupling is
System.
Background technique
The metal powder of aerosolization preparation has the advantages that sphericity is high, oxygen content is low etc..By the development and perfection of many years,
Gas-atomized powder technology has developed into the main method of production high-performance metal and alloy powder, and then becomes and support and push newly
The important means of investigation of materials and development.The basic principle is that liquid metal is ground into droplet and final using high-speed flow
It is frozen into powder, the core of aerosolization technology is control gas to the mechanism of metal liquid, makes the kinetic energy of high-speed flow most
The surface energy for being converted into metal powder of big degree.Currently, flourishing with metal 3D printing technique, relying is used
The preparation of metal powder raw material is increasingly taken seriously, this has also further pushed the development of gas-atomized powder technology and has answered
With.
Gas atomization has been more and more widely used in field of preparing metal powder, especially close coupling atomization technique.
Close-Coupled Gas Atomization technology has been obviously shortened the flying distance before air-flow and metal liquid interaction, greatly increases atomization
Efficiency also brings the raising of fine powder recovery rate, advantageously reduces production cost.Therefore, Close-Coupled Gas Atomization technology increasingly by
To the favor and attention of industry.And the main problem encountered in actual production at present include: one side tundish let slip a remark it is easily stifled
Plug causes atomization to be interrupted；In another aspect atomization process, let slip a remark constantly be washed, ablation, bore becomes larger, and mass output rate is caused to drop
It is low.
The molten metal temperature for causing to let slip a remark in the reason of blocking mainly tundish reduces, and viscosity increases, and mobility is deteriorated,
Until solidification.To solve the above-mentioned problems, the measure being usually taken includes improving the temperature of smelting furnace inner metal liquid and to centre
Packet carries out the problem of induction heating is to reach heat preservation, but the molten metal in tundish flows into the system of leting slip a remark being connected to atomization tank
When, still it can cool down, the risk gaged somebody still remains.In addition, the molten metal in tundish maintains higher temperature to produce to leting slip a remark
It is raw it is lasting wash away, ablation effect, usually used boron nitride material is let slip a remark, under non-vacuum condition, easily by high-temperature metal
Liquid is scrubbed, is corroded, atomization the later period let slip a remark bore increase, gas gold than reduce, atomizing effect deteriorate, mass output rate reduce.
To solve the above-mentioned problems, through retrieving, Chinese patent CN107042310A discloses a kind of gas atomizing nozzle, packet
Nozzle outer ring, nozzle inner ring, catheter, main air inlet pipe, auxiliary air inlet pipe, tundish are included, wherein catheter is installed in tundish
Bottom, and one end of catheter is communicated with the cavity of tundish, the protruding formation nozzle of the other end of catheter, nozzle inner ring
It is sleeved on the outside of nozzle set by catheter, nozzle exterior ring cap is mounted in the outside of nozzle inner ring, the inner wall and nozzle of nozzle outer ring
Atomization gas chamber is constituted between the outer wall of inner ring, is formed between the inner wall of nozzle outer ring and the outer wall of nozzle inner ring in the end of nozzle
Nozzle gas outlet circumferential weld, and nozzle gas outlet circumferential weld is communicated with atomization gas chamber, two main air inlet pipes are symmetrically installed in nozzle outer ring
Two sides, and one end of two main air inlet pipes with atomization gas chamber communicate；Chinese patent CN1709585A discloses a kind of high pressure gas
Body atomizer, it includes diversion pipe, and diversion pipe is externally provided with air cavity, the wall surface of the outside cavity wall of air cavity and the wall of inside cavity wall
Face forms Laval nozzle structure, is in cone on the outside of the tube wall near diversion pipe top, and the extended line of the conical surface forms angle β,
The extended line of cavity wall wall surface forms angle theta on the inside of air cavity in Laval nozzle structure divergent portion, and angle θ is greater than or equal to angle beta,
The central axis of Laval nozzle structure divergent portion forms angle α, Laval jet pipe divergent portion angle of flare δ；Chinese patent
CN107042310A and its internal structure design of Chinese patent CN1709585A are all complex, and are all made of high speed and high pressure gas
Body provides high kinetic energy, so higher cost.Chinese patent CN202343949U is disclosed to be atomized in a kind of smelting production and be used
The attemperator let slip a remark is to be equipped with heat insulation casing around leting slip a remark, heat-resisting guarantor is additionally provided in thermal insulation casing and between leting slip a remark
Warm layer.But let slip a remark and be constantly washed, ablation, bore becomes larger, and causes mass output rate to reduce, and heat insulation effect is bad.
Summary of the invention
1, it to solve the problems, such as
During existing aerosolization, molten metal causes to let slip a remark with temperature reduction to be blocked, this is practical new
Type provides a kind of atomization of close coupling and lets slip a remark system, ensure that the stability of flow of metal liquid stream, help to obtain moderately good mist
Change effect, realize higher fine powder recovery rate, while insulation effect is played to molten metal, prevents molten metal temperature from reducing and causing
It lets slip a remark blocking.
2, technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of atomization of close coupling is let slip a remark system, including is let slip a remark, diversion pipe, filled layer, graphite inner sleeve, graphite housing and bottom
Support, the top connection diversion pipe of leting slip a remark；It is matched outside the diversion pipe with graphite inner sleeve；The diversion pipe outside and graphite
The gap of inner sleeve is filled layer；The graphite outside of inner cover is matched with graphite housing；It the graphite housing and lets slip a remark by collet
It is fixed；The diversion pipe, filled layer, graphite inner sleeve, graphite housing outer diameter ratio be D1: D2: D3: D4=1:(1.5~2): (2~
3): (3~4).
In a kind of embodiment of the utility model, the material of leting slip a remark is zirconium oxide, internal in hollow ladder-like,
Its bottom bore is 4~5mm, and outside has the flange stretched out.
In a kind of embodiment of the utility model, the diversion pipe material is corundum, and bore is 7~8mm, wall thickness
For 1mm.
In a kind of embodiment of the utility model, the diversion pipe passes through graphite inner sleeve and the socket of leting slip a remark, and leads
The height of flow tube is 18~22mm higher than graphite inner sleeve.
In a kind of embodiment of the utility model, the filled layer material is alumina powder, and granularity is less than 200
Mesh.
In a kind of embodiment of the utility model, the graphite inner sleeve, graphite housing and collet material are high-purity stone
The fit clearance of ink, the outer inner room of graphite inner sleeve, graphite is 0.1~0.3mm, and the fit clearance between graphite housing and collet is 0.1
~0.3mm.
In a kind of embodiment of the utility model, the diversion pipe stretches out upwards, and upper part connects intermediate packet system；
The upper surface of filled layer is flushed with the upper surface of graphite inner sleeve, and is centered around the diversion pipe surrounding by clay filling.
In a kind of embodiment of the utility model, it is formed with step on the collet, the flange let slip a remark and step phase
Cooperation, collet and spray disc system cooperation.
3, beneficial effect
Compared with the prior art, the utility model has the following beneficial effects:
(1) a kind of close coupling of the utility model is atomized system of leting slip a remark, in the premise for the stability of flow for guaranteeing metal liquid stream
Under, wherein the outer diameter of diversion pipe, filled layer, graphite inner sleeve and graphite housing designs according to a certain percentage, which meets
Thermodynamic (al) HEAT TRANSFER LAW, by the molten metal of tundish flow nozzle system, temperature change is no more than 50 DEG C, and pyroconductivity is low,
Temperature gradient variation is small, effectively reduces heat waste consumption, plays insulation effect to molten metal, solves molten metal because temperature reduces
And lead to the problem of blocking of leting slip a remark；Meanwhile the work continuity of nozzle system is good, can obtain stable atomizing effect, guarantees
The consecutive production of aerosolization fine powder；
(2) a kind of close coupling of the utility model is atomized system of leting slip a remark, and controls the flow direction and volume flow of molten metal, and leak
Mouth uses zirconium oxide material, and refractory metal liquid (1600~1700 DEG C) washes away, ablation, lets slip a remark in atomization process internal in ladder
Shape, bore of leting slip a remark variation is small, ensure that the stability of flow of metal liquid stream, help to obtain moderately good atomizing effect, realizes
Higher fine powder recovery rate；
(3) a kind of close coupling of the utility model is atomized system of leting slip a remark, and wherein diversion pipe uses corundum material, for high temperature
The washing away of molten metal, ablation have excellent high temperature resistant, corrosion-resistant and wear-resisting property；And the upper surface of diversion pipe wants high
In the upper surface of graphite inner sleeve, buffer function is played for washing away for molten metal, improves heat insulation effect；
(4) a kind of close coupling of the utility model is atomized system of leting slip a remark, and filled layer material is alumina powder, and highest uses temperature
Degree is no more than 1700 DEG C；Graphite inner sleeve, graphite housing and collet material are high purity graphite, high purity graphite high temperature resistant and anti-oxidant
Performance is good, increases its service life；
(5) a kind of close coupling of the utility model is atomized system of leting slip a remark, and clay filling is centered around diversion pipe surrounding, and covers
In the upper surface of filled layer and the upper surface of graphite inner sleeve, on the one hand the filled layer of alumina powder material is sealed, anti-block
Change aluminium powder and pollute environment, positive effect is played to environmental protection；On the other hand diversion pipe, filled layer and graphite inner sleeve it
Between, it is possible to reduce heat scatters and disappears to play the role of heat preservation；
(6) a kind of close coupling of the utility model is atomized system of leting slip a remark, and system of leting slip a remark is surrounded by graphite piece, in induction power supply
Under, it may be implemented to be evenly heated the system of leting slip a remark, insulation effect played to molten metal, induction power supply will not generate pollution, add
Thermal velocity is fast, realizes clean energy-saving production.
Detailed description of the invention
Fig. 1 is that a kind of close coupling of the utility model is atomized system structure diagram of leting slip a remark.
Figure number explanation:
1, it lets slip a remark；2, diversion pipe；3, packing layer；4, graphite inner sleeve；5, graphite housing；6, collet.
Specific embodiment
The utility model is further described below combined with specific embodiments below.
It lets slip a remark system, including 1, diversion pipe 2 of leting slip a remark, fills out as shown in Figure 1, the utility model provides a kind of atomization of close coupling
Fill layer 3, graphite inner sleeve 4, graphite housing 5, collet 6, the 1 top connection diversion pipe 2 of leting slip a remark；2 outside of diversion pipe and stone
Black inner sleeve 4 matches；2 outside of diversion pipe and the gap of graphite inner sleeve 4 are filled layer 3；4 outside of graphite inner sleeve and stone
Black housing 5 matches；The graphite housing 5 and leting slip a remark 1 is fixed by collet 6；Diversion pipe, filled layer, graphite inner sleeve, graphite housing
Outer diameter ratio be D1: D2: D3: D4=1:(1.5~2): (2~3): (3~4).
Further, 1 material of leting slip a remark is zirconium oxide, and internal in hollow ladder-like, bottom bore is 4~5mm, external
Flange with stretching.2 material of diversion pipe is corundum, and bore is 7~8mm, wall thickness 1mm.Diversion pipe 2 passes through graphite inner sleeve
4 with let slip a remark 1 socket, the height of diversion pipe 2 is 18~22mm higher than graphite inner sleeve 4.3 material of filled layer is alumina powder, granularity
Less than 200 mesh.Graphite inner sleeve 4, graphite housing 5 and 6 material of collet are high purity graphite, matching between graphite inner sleeve 4, graphite housing 5
Conjunction gap is 0.1~0.3mm, and the fit clearance between graphite housing 5 and collet 6 is 0.1~0.3mm.Diversion pipe 2 stretches out upwards,
Upper part connects intermediate packet system；The upper surface of filled layer 3 is flushed with the upper surface of graphite inner sleeve 4, and is surrounded by clay filling
In 2 surrounding of diversion pipe.It is formed with step on collet 6,1 flange of leting slip a remark is matched with step, and collet 6 is matched with spray disc system
It closes.
Embodiment 1
In the present embodiment, 1 material of leting slip a remark is zirconium oxide, and internal in hollow ladder-like, bottom bore is 4mm, outside
Portion has the flange stretched out.2 material of diversion pipe is corundum, bore 7.5mm, wall thickness 1mm.Diversion pipe 2 passes through in graphite
Set 4 and 1 socket of leting slip a remark, the height of diversion pipe 2 are 20mm higher than graphite inner sleeve 4.3 material of filled layer is alumina powder, granularity 190
Mesh.Graphite inner sleeve 4, graphite housing 5 and 6 material of collet are high purity graphite, the fit clearance between graphite inner sleeve 4, graphite housing (5)
For 0.1mm, the fit clearance between graphite housing 5 and collet 6 is 0.1mm.Diversion pipe 2 stretches out upwards, and upper part connects tundish
System；The upper surface of filled layer 3 is flushed with the upper surface of graphite inner sleeve 4, and is centered around the diversion pipe 2 four by clay filling
Week.It is formed with step on collet 6,1 flange of leting slip a remark is matched with step, collet 6 and spray disc system cooperation.Diversion pipe 2 it is straight
Diameter is 9.5mm, the diameter of filled layer 3 is 19mm, the diameter of graphite inner sleeve 4 is 23.8mm, the diameter of graphite housing 5 is
28.5mm, diversion pipe 2, filled layer 3, graphite inner sleeve 4, graphite housing 5 outer diameter ratio be D1: D2: D3: D4=1:2:2.5:3.
Embodiment 2
In the present embodiment, 1 material of leting slip a remark is zirconium oxide, and internal in hollow ladder-like, bottom bore is 5mm, outside
Portion has the flange stretched out.2 material of diversion pipe is corundum, bore 7.5mm, wall thickness 1mm.Diversion pipe 2 passes through in graphite
Set 4 and 1 socket of leting slip a remark, the height of diversion pipe 2 are 19mm higher than graphite inner sleeve 4.3 material of filled layer is alumina powder, granularity 180
Mesh.Graphite inner sleeve 4, graphite housing 5 and 6 material of collet are high purity graphite, the fit clearance between graphite inner sleeve 4, graphite housing (5)
For 0.3mm, the fit clearance between graphite housing 5 and collet 6 is 0.3mm.Diversion pipe 2 stretches out upwards, and upper part connects tundish
System；The upper surface of filled layer 3 is flushed with the upper surface of graphite inner sleeve 4, and is centered around the diversion pipe 2 four by clay filling
Week.It is formed with step on collet 6,1 flange of leting slip a remark is matched with step, collet 6 and spray disc system cooperation.Diversion pipe 2 it is straight
Diameter is 9.5mm, the diameter of filled layer 3 is 4.3mm, the diameter of graphite inner sleeve 4 is 19mm, the diameter of graphite housing 5 is 33.3mm,
Diversion pipe 2, filled layer 3, graphite inner sleeve 4, graphite housing 5 outer diameter ratio be D1: D2: D3: D4=1:1.5:2:3.5.
Embodiment 3
In the present embodiment, 1 material of leting slip a remark is zirconium oxide, and internal in hollow ladder-like, bottom bore is 4mm, outside
Portion has the flange stretched out.2 material of diversion pipe is corundum, bore 8mm, wall thickness 1mm.Diversion pipe 2 passes through graphite inner sleeve 4
It is 21mm higher than graphite inner sleeve 4 with the height of 1 socket of leting slip a remark, diversion pipe 2.3 material of filled layer is alumina powder, and granularity is 185 mesh.
Graphite inner sleeve 4, graphite housing 5 and 6 material of collet are high purity graphite, and the fit clearance between graphite inner sleeve 4, graphite housing (5) is
0.2mm, the fit clearance between graphite housing 5 and collet 6 are 0.2mm.Diversion pipe 2 stretches out upwards, and upper part connects tundish system
System；The upper surface of filled layer 3 is flushed with the upper surface of graphite inner sleeve 4, and is centered around 2 surrounding of diversion pipe by clay filling.
It is formed with step on collet 6,1 flange of leting slip a remark is matched with step, collet 6 and spray disc system cooperation.The diameter of diversion pipe 2 is
10mm, filled layer 3 diameter be 20mm, the diameter of graphite inner sleeve 4 is 25mm, the diameter of graphite housing 5 is 30mm, diversion pipe 2,
Filled layer 3, graphite inner sleeve 4, graphite housing 5 outer diameter ratio be D1: D2: D3: D4=1:2:2.5:3.
Embodiment 4
In the present embodiment, 1 material of leting slip a remark is zirconium oxide, and internal in hollow ladder-like, bottom bore is 4mm, outside
Portion has the flange stretched out.2 material of diversion pipe is corundum, bore 7mm, wall thickness 1mm.Diversion pipe 2 passes through graphite inner sleeve 4
It is 22mm higher than graphite inner sleeve 4 with the height of 1 socket of leting slip a remark, diversion pipe 2.3 material of filled layer is alumina powder, and granularity is 170 mesh.
Graphite inner sleeve 4, graphite housing 5 and 6 material of collet are high purity graphite, and the fit clearance between graphite inner sleeve 4, graphite housing (5) is
0.1mm, the fit clearance between graphite housing 5 and collet 6 are 0.1mm.Diversion pipe 2 stretches out upwards, and upper part connects tundish system
System；The upper surface of filled layer 3 is flushed with the upper surface of graphite inner sleeve 4, and is centered around 2 surrounding of diversion pipe by clay filling.
It is formed with step on collet 6,1 flange of leting slip a remark is matched with step, collet 6 and spray disc system cooperation.The diameter of diversion pipe 2 is
9mm, filled layer 3 diameter be 18mm, the diameter of graphite inner sleeve 4 is 27mm, the outer diameter of graphite housing 5 is 36mm, diversion pipe 2,
Filled layer 3, graphite inner sleeve 4, graphite housing 5 diameter ratio be D1: D2: D3: D4=1:2:3:4.
Example described in the utility model is only that preferred embodiments of the present invention are described, not to this reality
It is defined with novel conception and scope, under the premise of not departing from the design concept of the utility model, this field engineering technology people
The various changes and improvements that member makes the technical solution of the utility model, should all fall into the protection scope of the utility model.
Claims (8)
- The system 1. a kind of atomization of close coupling is let slip a remark, it is characterised in that: including leting slip a remark (1), diversion pipe (2), filled layer (3), graphite Inner sleeve (4), graphite housing (5) and collet (6), (1) top connection diversion pipe (2) of leting slip a remark；The diversion pipe (2) it is external with Graphite inner sleeve (4) matches；The external gap with graphite inner sleeve (4) of the diversion pipe (2) is filled layer (3)；In the graphite It is matched outside set (4) with graphite housing (5)；The graphite housing (5) and let slip a remark (1) it is fixed by collet (6)；The diversion pipe (2), filled layer (3), graphite inner sleeve (4), graphite housing (5) outer diameter ratio be D1: D2: D3: D4=1:(1.5~2): (2~3): (3~4).
- The system 2. a kind of close coupling atomization according to claim 1 is let slip a remark, it is characterised in that: described (1) material of leting slip a remark is Zirconium oxide, internal in hollow ladder-like, bottom bore is 4~5mm, and outside has the flange stretched out.
- The system 3. a kind of close coupling atomization according to claim 1 is let slip a remark, it is characterised in that: diversion pipe (2) material For corundum, bore is 7~8mm, wall thickness 1mm.
- The system 4. a kind of close coupling atomization according to claim 3 is let slip a remark, it is characterised in that: the diversion pipe (2) passes through Graphite inner sleeve (4) and described (1) socket of leting slip a remark, the height of diversion pipe (2) are 18~22mm higher than graphite inner sleeve (4).
- The system 5. a kind of close coupling atomization according to claim 1 is let slip a remark, it is characterised in that: filled layer (3) material For alumina powder, granularity is less than 200 mesh.
- The system 6. a kind of close coupling atomization according to claim 1 is let slip a remark, it is characterised in that: the graphite inner sleeve (4), stone Black housing (5) and collet (6) material are high purity graphite, the fit clearance between graphite inner sleeve (4), graphite housing (5) is 0.1~ 0.3mm, the fit clearance between graphite housing (5) and collet (6) are 0.1~0.3mm.
- The system 7. a kind of close coupling atomization according to claim 1 is let slip a remark, it is characterised in that: the diversion pipe (2) is upward It stretches out, upper part connects intermediate packet system；The upper surface of filled layer (3) is flushed with the upper surface of graphite inner sleeve (4), and by clay Filling is centered around the diversion pipe (2) surrounding.
- The system 8. a kind of close coupling atomization according to claim 2 is let slip a remark, it is characterised in that: formed on the collet (6) There is step, the flange of (1) of leting slip a remark is matched with step, collet (6) and spray disc system cooperation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920247822.8U CN209598210U (en) | 2019-02-27 | 2019-02-27 | A kind of atomization of close coupling is let slip a remark system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920247822.8U CN209598210U (en) | 2019-02-27 | 2019-02-27 | A kind of atomization of close coupling is let slip a remark system |
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ID=68403355
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014701A (en) * | 2019-12-17 | 2020-04-17 | 南京理工大学 | Method for preparing high-conductivity metal powder by electrode induction melting gas atomization method |
| CN111889690A (en) * | 2020-08-13 | 2020-11-06 | 中天上材增材制造有限公司 | Full-automatic vacuum tight coupling gas atomization device and method thereof |
| CN115253331A (en) * | 2022-07-25 | 2022-11-01 | 季华实验室 | Combined anti-blocking flow guide device and powder atomization equipment |
-
2019
- 2019-02-27 CN CN201920247822.8U patent/CN209598210U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014701A (en) * | 2019-12-17 | 2020-04-17 | 南京理工大学 | Method for preparing high-conductivity metal powder by electrode induction melting gas atomization method |
| CN111889690A (en) * | 2020-08-13 | 2020-11-06 | 中天上材增材制造有限公司 | Full-automatic vacuum tight coupling gas atomization device and method thereof |
| CN111889690B (en) * | 2020-08-13 | 2022-12-27 | 中天上材增材制造有限公司 | Gas atomization method of full-automatic vacuum tight coupling gas atomization device |
| CN115253331A (en) * | 2022-07-25 | 2022-11-01 | 季华实验室 | Combined anti-blocking flow guide device and powder atomization equipment |
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Address after: 243000 No.1, Cishan Road, Yushan Economic Development Zone, Yushan District, Ma'anshan, Anhui Province Patentee after: Ma'anshan Xinkangda Magnetic Industry Co.,Ltd. Address before: 243000 No.1 Cishan Road, Yushan Economic Development Zone, Yushan District, Ma'anshan City, Anhui Province Patentee before: MAANSHAN NEW CONDA MAGNETIC INDUSTRIAL CO.,LTD. |