CN218591817U - Tightly coupled circular seam nozzle for metal powder making - Google Patents
Tightly coupled circular seam nozzle for metal powder making Download PDFInfo
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- CN218591817U CN218591817U CN202222908498.4U CN202222908498U CN218591817U CN 218591817 U CN218591817 U CN 218591817U CN 202222908498 U CN202222908498 U CN 202222908498U CN 218591817 U CN218591817 U CN 218591817U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model relates to a metal powder preparation equipment field, especially a metal powder process is with tight coupling circumferential weld nozzle. The tightly-coupled circular seam nozzle can automatically prevent blockage and has a better powder making effect. The utility model discloses switch-on metal fluid in well blast pipe, blast pipe external suit nozzle body, this internal hollow air cavity that is equipped with of nozzle, the air cavity is including the inlet port of drawing through the nozzle lateral wall, still includes towards the package steel efflux that prevents of metal flow hits hole, the broken hole of hitting of atomizing, still including can automatic formation and assaulting package steel prevent stifled hole of hitting, prevent stifled hitting between hole and the blast pipe being equipped with link gear to form when package steel forms and prevent stifled hitting air flue passageway.
Description
Technical Field
The utility model relates to a metal powder preparation equipment field, especially a metal powder process is with tight coupling circumferential weld nozzle.
Background
Cobalt-based alloys are hard alloys that are resistant to various types of wear and corrosion and high temperature oxidation. The coating has excellent high-temperature resistance, wear resistance and corrosion resistance, and is a good coating material for surface modification under the condition of complex and severe working conditions.
With the development of technologies such as metal 3D printing and ultrahigh-speed laser cladding, the demand and quality requirements for particle-reinforced cobalt-based alloy powder are higher and higher, and people urgently need to adopt an efficient method to prepare high-quality alloy powder. One of the current methods suitable for mass production of high-quality powder is a vacuum induction melting gas atomization powder making method, which can prepare metal powder with high sphericity and low oxygen content, and the key factor determining the quality of the powder is the design of a nozzle structure. The close coupling type nozzle has compact structure and complex design, but because the nozzle structure obviously shortens the acting distance of air flow and metal liquid flow, the atomization efficiency of the nozzle is obviously improved, and the nozzle is suitable for mass production, so the nozzle is widely applied at present. The key of the close-coupled circular seam nozzle for improving the atomization quality is that the gas can be kept in a relatively high atomization efficiency state in the process of the speed of a gas flow outlet of a spray pipe, the attenuation degree of the gas flow speed of an atomization area and the interaction of the gas flow at the outlet of the nozzle and a metal liquid flow, the metal liquid flow is continuously and stably crushed, and the purpose of improving the powder quality is achieved. Furthermore, in the design of the close coupling nozzle, the atomization process of the method is that high-temperature metal liquid flow in the tundish flows into the bottom of the close coupling nozzle through the guide pipe and interacts with high-speed low-temperature gas jet flow formed by the air outlet channel of the circumferential seam spray pipe, and the liquid flow is crushed and rapidly solidified to form metal powder. The main disadvantage of this technology at this stage is that the metal powder yield is always low and unstable.
Aiming at the situation, technical workers in the field carry out multi-improvement, for example, a manufacturing method of a gas heating rotational flow type tightly-coupled annular seam nozzle is applied by the company Limited in the creative lightweight scientific research institute of Beijing department, and rotational flow of liquid flow is realized by improving a flow guide pipe, so that superposition of various vector forces on an impact surface is realized, and powder preparation efficiency and powder preparation quality are improved.
For another example, the patent with the application number of 201911323841.5 is named as a novel tightly-coupled gas atomizing nozzle, and the designed double-airflow-channel tightly-coupled nozzle is suitable for high-capacity tundish anti-steel-deposition and can efficiently prepare ultrafine spherical metal powder. The draft tube required for the tightly coupled nozzle to completely spray the molten steel in the large-capacity tundish is strongly sucked under the negative pressure condition, and simultaneously, the key factors such as supersonic speed, angle, gas-liquid ratio and the like required for atomizing fine powder are ensured.
However, in long-term first-line work, the applicant has found that there are areas in the prior art that need improvement, embodied in: 1. the properties of metal liquid flows generated by powder making raw materials with different proportions are slightly different, the optimal impact angle for each liquid flow is also different, and the technical center in the prior art is always in a state of one material, so that the optimal treatment state cannot be achieved even if the material is not suitable or cannot be adjusted; 2. in the double-channel structure, the impact of the second channel on the liquid flow is close to lateral direct collision, and the applicant finds that the impact force and the impact direction are not ideal after multi-party comparison; 3. the atomized fog liquid area is relatively uncontrollable.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that in the prior art, especially, the tight coupling circumferential weld nozzle is unsatisfactory in powder forming effect, too strong in equipment unicity and uncontrollable relatively in station area.
The utility model discloses a concrete scheme is:
a tight coupling circular seam nozzle for metal powder milling is designed, a metal fluid is communicated in a flow pipe, a nozzle body is sleeved outside the flow guide pipe, a hollow air cavity is arranged in the nozzle body and comprises an air inlet hole penetrating through the side wall of the nozzle, an anti-package steel jet flow striking hole facing to metal flow, an atomization crushing striking hole group and an anti-blocking striking hole capable of automatically forming and striking package steel, and a linkage mechanism is arranged between the anti-blocking striking hole and the flow guide pipe so as to form an anti-blocking striking air passage channel when the package steel is formed;
the link gear is including installing the spring of nozzle body upper surface, be equipped with outstanding installation ring body on the honeycomb duct, the other end of spring is installed on the installation ring body, the spring is in the state of often loosening, the nozzle body with be the axle sleeve formula between the honeycomb duct and connect, be equipped with two at least through-holes of acting as go-between on the inner wall of the nozzle body that forms "cover", one section of acting as go-between is fixed in on the installation ring body, the other end is connected and is driven prevent stifled barrier ring that strikes the air flue passageway and open and close, be equipped with the putty towards the honeycomb duct liquid outlet on the barrier ring and strike the air flue.
In specific implementation, the ladle steel jet flow preventing hitting hole is an annular hole so as to form a conical air flow with a cone angle smaller than 22 degrees.
In specific implementation, the atomization breaking striking hole group comprises at least 6 columnar jet ports, and the distribution of the jet ports takes the axis of the flow guide pipe as the center.
In specific implementation, a miniature jet pipe is arranged in the columnar jet port, a rotating automation degree space with a rotating cone angle not less than 60 degrees is arranged at the mounting position of the jet pipe, wherein the rotating cone angle takes the mounting fulcrum of the miniature jet pipe as the center of a circle and takes the upper part and the lower part as the orientation.
In specific implementation, the top of the jet flow pipes is not higher than the edge of the inner wall of the bottom of the air cavity, the bottom of the jet flow pipes is lower than the lower surface of the nozzle body, and umbrella-shaped connecting rods are further arranged among the jet flow pipes to realize synchronous retraction and rotation of the jet flow pipes relative to a distribution center.
The umbrella-shaped connecting rod comprises a sliding ring sleeved on the flow guide pipe, fixing rings sleeved on the flow guide pipes and a plurality of connecting rods, wherein the two sides of each connecting rod are hinged to the fixing rings and the sliding ring. In this design, the gas outlet of jet-propelled pipe is close to tangent with atomizing scope, in other words adds one deck gas hood for atomizing scope, and at every point, the direction of gas hood and the flow direction of atomizing powder are approximate tangent, have possessed certain image within range internal rotation's vector power, the umbrella form scattering after the atomizing originally, cover section of thick bamboo form scattering after having become the atomizing, fashioned curve has the line length of longer route, the shaping scope is more accurate, the better powdering effect of shaping effect is better.
Or the auxiliary hoop is arranged, the outer ring of the auxiliary hoop is larger than the inner ring of the mounting ring formed by the atomization breaking striking hole group, and the inner ring of the auxiliary hoop is smaller than the outer ring of the mounting ring formed by the atomization breaking striking hole group.
In specific implementation, the umbrella-shaped connecting rod further comprises a conical cylinder-shaped heat insulation cover arranged above the umbrella-shaped connecting rod.
The beneficial effects of the utility model reside in that:
the tightly-coupled circular seam nozzle can automatically prevent blockage and has better powder making effect;
the whole equipment does not have an external power source and manpower, automatic adjustment and regulation can be still realized, the application range of the equipment is regulated on the premise of not greatly increasing the cost, and the flexibility and the automation degree are greatly improved;
the equipment guarantees the flexibility, reasonably limits the ground area after atomization, is more favorable for controlling the processing result, effectively prevents uncontrolled splashing of metal atomized particles, has high adjustability and can be adjusted at any time according to the field working condition;
a plurality of sets of auxiliary tools are arranged, so that flexible auxiliary adjustment of equipment is facilitated, the requirement on the technical capability of workers is low, and the labor cost is saved to a certain extent;
a tightly coupled circular seam nozzle is provided which is distinguished from multi-stage atomization in that the auxiliary air flow, the auxiliary wall surface and the main air flow are atomized in combination. The device effectively solves the problems that when single-beam airflow is used for atomization, airflow generates deflection action when the loaded metal liquid flow is atomized, and the atomization process is unstable or atomization cannot continuously keep high efficiency.
Drawings
FIG. 1 is a front view of the structure of the present invention;
fig. 2 is a bottom view of the structure of the present invention;
fig. 3 is a left side view of the structure of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of the schematic structure of FIG. 3 according to the present invention;
fig. 5 is a schematic view of the axial measurement effect of the present invention in full section of the schematic structure of fig. 3;
fig. 6 is a full sectional view of another embodiment of the present invention;
FIG. 7 is an enlarged view of the section A of FIG. 4 according to the present invention;
fig. 8 is a perspective view of the present invention;
names of components in the drawings: 1. a flow guide pipe; 2. a nozzle body; 3. the mounting ring body 4 is an air inlet; 5. preventing the ladle steel jet from hitting the hole; 6. a columnar jet port; 7. a blocking ring; 8. blocking material impacts an air passage; 9. a slip ring; 10. a connecting rod; 11. a fixing ring; 12. conical heat shield.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1
A tight coupling circumferential weld nozzle for metal powder process, refer to fig. 1 to 5, design and switch on the metal fluid in the honeycomb duct 1, the honeycomb duct 1 overcoat installs the body of the nozzle 2, there is hollow air cavity in the body of the nozzle 2, the said air cavity includes the inlet port 4 to wear through the sidewall of the nozzle, also include towards the steel jet of preventing enveloping of the metal flow hit the hole 5, atomize and break and hit the group of holes, also include and can form and impact the steel-enveloping of preventing blocking up and hitting the hole automatically, the said preventing blocking up hits the hole and honeycomb duct 1 and is equipped with the link gear, in order to form and prevent blocking up and hit the airway channel when steel-enveloping;
the link gear is including installing the spring of 2 upper surfaces of nozzle body, be equipped with outstanding installation ring body 3 on the honeycomb duct 1, the other end of spring is installed on the installation ring body 3, the spring is in the state of often loosing, nozzle body 2 with be the axle sleeve formula between honeycomb duct 1 and connect, be equipped with two at least through-holes of acting as go-between on the inner wall of the nozzle body 2 that forms "cover", one section of acting as go-between is fixed in on the installation ring body 3, the other end is connected and is driven prevent stifled barrier ring 7 that strikes the air flue passageway and open and close, be equipped with putty impact air flue 8 towards the honeycomb duct 1 liquid outlet on the barrier ring 7.
The during operation, prevent package steel efflux hitting hole 5 and be used for tentatively preventing package steel, the broken punching group that strikes of atomizing is used for further optimizing and injecing atomizing scope, and UNICOM's mechanism and the stifled striking air flue that prevents of drive, design aim at, when package steel appears in the export, drive honeycomb duct 1 aversion, and stifled striking air flue that prevents under the in-process normal close state of honeycomb duct 1 aversion is opened, form the gas shock to package steel position, it is better to strike the effect, pertinence is better, realization that can be better prevents stifled and prevent package steel, furtherly, when being strikeed to the package steel, the spring drives and resets, prevent stifled striking air flue and returning to the state of normal close once.
In the working process, the air inlet hole 4 sends high-speed high-pressure gas, the honeycomb duct 1 sends the raw material metal flow after melting, the outlet of the steel-coated jet-flow-preventing hitting hole 5 meets the raw material metal flow, negative pressure is effectively formed, the raw material metal flow is conveniently subjected to vaporific diffusion, the gas outlet of the atomizing breaking hitting control group further hits the vaporific diffused metal flow of the regular script, the atomizing effect is further improved, and the final powdering effect is further optimized.
The anti-ladle steel jet flow hitting hole 5 is an annular hole so as to form a conical air flow with a cone angle smaller than 22 degrees. The design of the angle is determined for the characteristics of most materials in the process step.
The atomization breaking striking hole group comprises at least 6 columnar jet ports 6, and the distribution of the jet ports takes the axis of the flow guide pipe 1 as the center.
The columnar jet flow port 6 is internally provided with a miniature jet flow pipe, and the installation position of the jet flow pipe is provided with a rotation automation degree space with a rotation cone angle not less than 60 degrees, wherein the rotation cone angle takes the installation fulcrum of the miniature jet flow pipe as the center of a circle and takes the upper part and the lower part as the orientation. In the working process, the columnar jet opening 6 can be rotated to a proper position aiming at metal liquid flows of different materials before the machine is started, the flexibility and the pertinence are stronger, and manual adjustment can be carried out before the machine is started in the working process.
The top of each jet flow pipe is not higher than the edge of the inner wall of the bottom of the air cavity, the bottom of each jet flow pipe is lower than the lower surface of the nozzle body 2, and an umbrella-shaped connecting rod 10 is further arranged among the jet flow pipes so as to realize synchronous retraction and rotation of each jet flow pipe relative to the distribution center. The adjustment in a conical surface space is realized to adapt to various metal liquid flow raw materials with different proportioning properties.
Example 2
In this embodiment, the working principle is the same as that in embodiment 1, and specifically, the present invention further includes a plurality of auxiliary devices, and specifically, an auxiliary hoop, wherein an outer ring of the auxiliary hoop is larger than an inner ring of a mounting ring formed in the atomization breaking striking hole group, and an inner ring of the auxiliary hoop is smaller than an outer ring of the mounting ring formed in the atomization breaking striking hole group. This supplementary hoop does not draw in the drawing, and its structure is cyclic annular, can divide into among the practical process, pushes up from atomizing breakage striking punch combination below, and supplementary angle deflects, or the suit is in atomizing breakage striking punch combination outside back chucking, from last down removal, carries out angle adjustment, umbelliform connecting rod 10 still includes the awl section of thick bamboo form heat exchanger 12 of taking the dress in its top. This design lies in thermal-insulated, protects umbrella-shaped connecting rod.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a metal powder process is with close coupling circumferential weld nozzle which characterized in that: the nozzle comprises a guide pipe (1), a nozzle body (2) and a hollow air cavity, wherein metal fluid is communicated in the guide pipe (1), the nozzle body (2) is sleeved outside the guide pipe (1), the air cavity comprises an air inlet (4) penetrating through the side wall of the nozzle, an anti-package steel jet flow striking hole (5) facing to metal flow, an atomization breaking striking hole group and an anti-blocking striking hole capable of automatically forming and striking package steel, and a linkage mechanism is arranged between the anti-blocking striking hole and the guide pipe (1) so as to form an anti-blocking striking air passage channel when the package steel is formed;
the link gear is including installing the spring of nozzle body (2) upper surface, be equipped with outstanding installation ring body (3) on honeycomb duct (1), the other end of spring is installed on installation ring body (3), the spring is in the state of often loosing, nozzle body (2) with be the axle sleeve formula between honeycomb duct (1) and connect, be equipped with two at least through-holes of acting as go-between on the inner wall of the nozzle body (2) that forms "cover", one section of acting as go-between is fixed in on the installation ring body (3), the other end is connected and is driven prevent stifled stopper ring (7) that strike the air flue passageway and open and close, be equipped with putty impact air flue (8) towards honeycomb duct (1) liquid outlet on stopper ring (7).
2. The close-coupled circumferential seam nozzle for pulverizing metal powder of claim 1, wherein: the anti-ladle steel jet flow hitting hole (5) is an annular hole so as to form conical air flow with a cone angle smaller than 22 degrees.
3. The close-coupled circumferential seam nozzle for pulverizing metal powder of claim 1, wherein: the atomization breaking striking hole group comprises at least 6 columnar jet ports (6), and the distribution of the jet ports takes the axis of the flow guide pipe (1) as the center.
4. The close-coupled circumferential seam nozzle for pulverizing metal powder of claim 3, wherein: the jet flow device is characterized in that a miniature jet flow pipe is arranged in the columnar jet flow port (6), a rotating automation degree space with a rotating cone angle not less than 60 degrees is arranged at the mounting position of the jet flow pipe, wherein the rotating cone angle uses the mounting fulcrum of the miniature jet flow pipe as the circle center and the upper part and the lower part as the orientation.
5. The close-coupled circumferential seam nozzle for pulverizing metal powder of claim 4, wherein: the top of each jet flow pipe is not higher than the edge of the inner wall of the bottom of the air cavity, the bottom of each jet flow pipe is lower than the lower surface of the nozzle body (2), and an umbrella-shaped connecting rod (10) is further arranged among the jet flow pipes to realize synchronous retraction and rotation of each jet flow pipe relative to a distribution center.
6. The close-coupled circumferential seam nozzle for pulverizing metal powder of claim 5, wherein: umbelliform connecting rod (10) are including the suit at slip ring (9) on honeycomb duct (1) and solid fixed ring (11) of suit on each jet-propelled pipe still include a plurality of connecting rods (10), each hinge branch in both sides of connecting rod (10) is connected gu fixed ring (11) with slip ring (9).
7. The close-coupled circumferential seam nozzle for pulverizing metal powder of claim 6, wherein: the auxiliary hoop is characterized by further comprising an auxiliary hoop, the outer ring of the auxiliary hoop is larger than the inner ring of the mounting ring formed by the atomization breaking striking hole group, and the inner ring of the auxiliary hoop is smaller than the outer ring of the mounting ring formed by the atomization breaking striking hole group.
8. The close-coupled circumferential seam nozzle for pulverizing metal powder of claim 6, wherein: the umbrella-shaped connecting rod (10) further comprises a conical heat insulation cover (12) arranged above the umbrella-shaped connecting rod in a lapping mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222908498.4U CN218591817U (en) | 2022-11-02 | 2022-11-02 | Tightly coupled circular seam nozzle for metal powder making |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222908498.4U CN218591817U (en) | 2022-11-02 | 2022-11-02 | Tightly coupled circular seam nozzle for metal powder making |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116604023A (en) * | 2023-05-29 | 2023-08-18 | 中航迈特增材科技(北京)有限公司 | Atomizer and preparation method of silver powder for 3D printing |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116604023A (en) * | 2023-05-29 | 2023-08-18 | 中航迈特增材科技(北京)有限公司 | Atomizer and preparation method of silver powder for 3D printing |
| CN116604023B (en) * | 2023-05-29 | 2023-11-21 | 中航迈特增材科技(北京)有限公司 | Atomizer and preparation method of silver powder for 3D printing |
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