CN111054930A - Annular inert gas atomizing nozzle - Google Patents
Annular inert gas atomizing nozzle Download PDFInfo
- Publication number
- CN111054930A CN111054930A CN201911347641.3A CN201911347641A CN111054930A CN 111054930 A CN111054930 A CN 111054930A CN 201911347641 A CN201911347641 A CN 201911347641A CN 111054930 A CN111054930 A CN 111054930A
- Authority
- CN
- China
- Prior art keywords
- liquid flow
- jet
- guide pipe
- flow guide
- atomizing nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011261 inert gas Substances 0.000 title claims abstract description 14
- 238000009689 gas atomisation Methods 0.000 title abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000007921 spray Substances 0.000 claims description 30
- 239000000843 powder Substances 0.000 abstract description 25
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000006698 induction Effects 0.000 abstract description 8
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 238000000889 atomisation Methods 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0836—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with electric or magnetic field or induction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/088—Fluid nozzles, e.g. angle, distance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0892—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting nozzle; controlling metal stream in or after the casting nozzle
Abstract
The invention provides an annular inert gas atomizing nozzle, belongs to the field of nozzle structural design, and particularly relates to an annular inert gas atomizing nozzle. Solves the problem of low fine powder yield commonly existing in the prior vacuum gas atomization powder preparation technology. The jet nozzle comprises an air cavity, a plurality of jet holes and a liquid flow guide pipe, wherein the jet holes are uniformly distributed at the bottom of the air cavity in an annular manner along the main axis of the liquid flow guide pipe, the intersection angle of the axis of the jet holes and the main axis of the liquid flow guide pipe is a jet vertex angle theta, the range of the jet vertex angle theta is 0-30 degrees, the central distance of the two jet holes taking the main axis of the liquid flow guide pipe as a symmetry axis is a pitch circle diameter D, and the radius of the jet holes is R0Said R is0In the range of 1mm < R0Less than 15 mm. It is mainly used for the production of powder by vacuum induction melting and gas atomization of cold wall crucible.
Description
Technical Field
The invention belongs to the field of nozzle structure design, and particularly relates to an annular inert gas atomizing nozzle.
Background
A vacuum induction melting gas atomization powder preparation process (VIGA-CC) of a cold wall crucible adopts an induction coil to melt an alloy bar in a water-cooled copper crucible, liquid flow conduction is realized by controlling the induction coil at the bottom of the crucible, and when alloy liquid flows through an atomization nozzle, the liquid flow is smashed and solidified by high-speed airflow generated by the atomization nozzle to form fine powder particles. The increase of jet-propelled pressure can increase the velocity of flow of atomizing nozzle export air current to a certain extent, but jet-propelled pressure can not the unlimited increase nozzle export air current velocity of flow, consequently must carry out the design research to the atomizing nozzle structure, because atomizing nozzle is whole atomizing in-process key component, make the atomizing medium obtain the high energy, high-speed core component, the atomizing ability receives nozzle structure influence obvious in the gas atomization powder process is smelted in the vacuum induction, consequently, the reasonable atomizing nozzle of design structure, it has important meaning to realize high-efficient production.
Disclosure of Invention
The invention provides an annular inert gas atomizing nozzle for solving the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the annular inert gas atomizing nozzle comprises an air cavity, a plurality of spray holes and a liquid flow guide pipe, wherein the spray holes are uniformly distributed at the bottom of the air cavity in an annular manner along the main axis of the liquid flow guide pipe, the intersection angle of the axis of each spray hole and the main axis of the liquid flow guide pipe is a spray vertex angle theta, the range of the spray vertex angle theta is more than or equal to 0 degree and less than or equal to 30 degrees, the central distance of the two spray holes taking the main axis of the liquid flow guide pipe as a symmetry axis is a pitch diameter D, and the radius of each spray hole is R0Said R is0In the range of 1mm < R0＜15mm。
Furthermore, the radius of the spray hole is R0Is 10 mm.
Further, the number of the injection holes is 4.
Further, the ejection apex angle θ is 16 °.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problem of low fine powder yield commonly existing in the prior vacuum gas atomization powder preparation technology. The invention is mainly used in the production of cold wall crucible vacuum induction melting gas atomization powder making, can effectively improve the production efficiency, improve the sphericity of powder and the yield of fine powder by improving the structure of the atomizing nozzle, reduce the production cost of the powder product and improve the income while ensuring the quality of the powder product. The reasonable design matches the key structure design parameter that influences atomization effect, has realized the high-efficient stable production of gas atomization powder process, has guaranteed the homogeneity of atomizing liquid drop among the atomizing process, has improved the farine yield, has reduced manufacturing cost, can guide the production that realizes high efficiency, high quality powder, provides an efficient, the annular atomizing nozzle structure that the farine rate is high for the powder market simultaneously.
Drawings
FIG. 1 is a schematic structural view of an annular inert gas atomizing nozzle according to the present invention.
1-air cavity, 2-jet orifice and 3-liquid flow guide pipe.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention.
Referring to fig. 1 to illustrate the embodiment, the annular inert gas atomizing nozzle comprises an air cavity 1, a plurality of spray holes 2 and a liquid flow guide pipe 3, wherein the spray holes 2 are uniformly distributed at the bottom of the air cavity 1 along the main axis of the liquid flow guide pipe 3 in an annular shape, the intersection angle of the axes of the spray holes 2 and the main axis of the liquid flow guide pipe 3 is a spray vertex angle theta, the range of the spray vertex angle theta is more than or equal to 0 degree and less than or equal to 30 degrees, the central distance of the two spray holes 2 taking the main axis of the liquid flow guide pipe 3 as a symmetry axis is a pitch diameter D, and the radius of the spray holes 2 is R0Said R is0In the range of 1mm < R0＜15mm。
This embodiment is to four key design parameters of atomizing nozzle main control, and the difference is: radius R of nozzle orifice 20Jet apex angle theta, pitch circle diameter D and the number of jet holes 2.
Determining the cross-sectional area of the gas flowing out of the atomizing nozzle based on the pressure and flow rate of the gas supply source and the cross-sectional area of the nozzle flow guide tube, and determining the radius R of the spray hole 20，R0After determination, the numerical change of the pitch circle diameter D and the jet vertex angle theta directly influences the jetThe size of the core area range influences the atomization energy, the ejection vertex angle theta is properly increased, the pitch circle diameter D is reduced, the attenuation of the airflow ejection energy can be reduced, and small liquid drops can be obtained after atomization.
In this embodiment, the annular atomizing nozzle is applied to the condition that the atomizing pulverization pressure is 5 +/-0.2 MPa, the number of the spray holes 2 is 4, and the radius of the spray holes 2 is R010mm, the spray tip angle theta is 16 deg.. The pitch circle diameter D is 66mm, the distance is suitable for a cold wall crucible vacuum induction melting gas atomization powder making process, the centers of 4 small gas injection holes are uniformly distributed on the pitch circle, the cold wall crucible vacuum induction melting gas atomization powder making process adopts an annular atomizing nozzle, in the powder making process, metal liquid flows pass through a liquid flow guide pipe 3, 4 uniformly distributed spray holes 2 jointly spray high-pressure gas, the high-pressure gas is converted into high-speed gas flow after passing through the spray holes 2, the high-speed gas flow impacts a low-speed alloy liquid flow column to atomize to form spherical alloy powder with small size and uniform distribution, the high-efficiency stable production of gas atomization powder making is realized through reasonable structural design, the uniformity of atomized liquid drops in the atomizing process is ensured, the fine powder yield is improved, the production cost is reduced, the design of the annular atomizing nozzle structure can guide the realization of high-efficiency and high-quality powder production, meanwhile, an annular atomizing nozzle structure with high efficiency and high fine powder rate is provided for the powder market.
The above detailed description of the annular inert gas atomizing nozzle provided by the present invention is provided, and the principle and the embodiment of the present invention are explained by applying specific examples, and the above description of the examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (4)
1. An inert gas annular atomizing nozzle characterized by: the jet nozzle comprises an air cavity (1), a plurality of jet holes (2) and a liquid flow guide pipe (3), wherein the jet holes (2) are in a plurality, and the plurality of jet holes (2) are arranged along the main shaft of the liquid flow guide pipe (3)The lines are uniformly distributed at the bottom of the air cavity (1) in an annular shape, the intersection angle of the axes of the spray holes (2) and the main axis of the liquid flow guide pipe (3) is a spray vertex angle theta, the range of the spray vertex angle theta is more than or equal to 0 degree and less than or equal to 30 degrees, the central distance of the two spray holes (2) taking the main axis of the liquid flow guide pipe (3) as a symmetry axis is a pitch diameter D, and the radius of the spray holes (2) is R0Said R is0In the range of 1mm < R0＜15mm。
2. An inert gas annular atomizing nozzle as set forth in claim 1, wherein: the radius of the spray hole (2) is R0Is 10 mm.
3. An inert gas annular atomizing nozzle as set forth in claim 1, wherein: the number of the spray holes (2) is 4.
4. An inert gas annular atomizing nozzle as set forth in claim 1, wherein: the spray apex angle θ was 16 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347641.3A CN111054930A (en) | 2019-12-24 | 2019-12-24 | Annular inert gas atomizing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347641.3A CN111054930A (en) | 2019-12-24 | 2019-12-24 | Annular inert gas atomizing nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111054930A true CN111054930A (en) | 2020-04-24 |
Family
ID=70303158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911347641.3A Pending CN111054930A (en) | 2019-12-24 | 2019-12-24 | Annular inert gas atomizing nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111054930A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8503276D0 (en) * | 1984-02-29 | 1985-03-13 | Gen Electric | Atomization nozzle |
| US5320509A (en) * | 1991-10-01 | 1994-06-14 | Hitachi Metals, Ltd. | Molten metal-atomizing apparatus |
| CN106378461A (en) * | 2016-11-21 | 2017-02-08 | 华南理工大学 | Double-nozzle atomizing device and method for preparing 3D printing spherical metal powder |
| CN106513692A (en) * | 2016-12-30 | 2017-03-22 | 湖南航天新材料技术研究院有限公司 | Atomizing nozzle and method for producing powder |
| CN206215920U (en) * | 2016-11-21 | 2017-06-06 | 华南理工大学 | A kind of two-nozzle atomization device for preparing 3D printing globular metallic powder |
| CN108247074A (en) * | 2018-04-23 | 2018-07-06 | 安徽哈特三维科技有限公司 | A kind of device and method for being used to prepare inexpensive high cleanliness spherical metal powder |
| CN108274013A (en) * | 2018-04-23 | 2018-07-13 | 安徽哈特三维科技有限公司 | A kind of gas atomization prepares the special atomizer of 3D printing titanium alloy spherical powder |
| CN108480652A (en) * | 2018-04-23 | 2018-09-04 | 安徽哈特三维科技有限公司 | It is a kind of to prepare spherical metal powder high efficiency annular distance gas atomizing nozzle |
-
2019
- 2019-12-24 CN CN201911347641.3A patent/CN111054930A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8503276D0 (en) * | 1984-02-29 | 1985-03-13 | Gen Electric | Atomization nozzle |
| US5320509A (en) * | 1991-10-01 | 1994-06-14 | Hitachi Metals, Ltd. | Molten metal-atomizing apparatus |
| CN106378461A (en) * | 2016-11-21 | 2017-02-08 | 华南理工大学 | Double-nozzle atomizing device and method for preparing 3D printing spherical metal powder |
| CN206215920U (en) * | 2016-11-21 | 2017-06-06 | 华南理工大学 | A kind of two-nozzle atomization device for preparing 3D printing globular metallic powder |
| CN106513692A (en) * | 2016-12-30 | 2017-03-22 | 湖南航天新材料技术研究院有限公司 | Atomizing nozzle and method for producing powder |
| CN108247074A (en) * | 2018-04-23 | 2018-07-06 | 安徽哈特三维科技有限公司 | A kind of device and method for being used to prepare inexpensive high cleanliness spherical metal powder |
| CN108274013A (en) * | 2018-04-23 | 2018-07-13 | 安徽哈特三维科技有限公司 | A kind of gas atomization prepares the special atomizer of 3D printing titanium alloy spherical powder |
| CN108480652A (en) * | 2018-04-23 | 2018-09-04 | 安徽哈特三维科技有限公司 | It is a kind of to prepare spherical metal powder high efficiency annular distance gas atomizing nozzle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106378461B (en) | A kind of two-nozzle atomization device and method preparing 3D printing globular metallic powder | |
| CN102319898B (en) | Spray forming system for preparing alloy and metal-based composite parts | |
| WO2020063626A1 (en) | Device and method for highly efficient preparation of superfine spherical metal powder by means of drop-by-drop centrifugal atomization process | |
| CN108274013A (en) | A kind of gas atomization prepares the special atomizer of 3D printing titanium alloy spherical powder | |
| CN204449311U (en) | For the preparation of the device of fine grain hypoxemia spherical titanium and titanium alloy powder | |
| CN104057097B (en) | Dual-ring supersonic atomizer | |
| CN206215920U (en) | A kind of two-nozzle atomization device for preparing 3D printing globular metallic powder | |
| CN105618773B (en) | A kind of gas atomization device being used to prepare 3D printing metal powder | |
| JP6006861B1 (en) | Metal powder manufacturing apparatus and manufacturing method thereof | |
| CN101992301A (en) | Method for producing spherical stainless steel powder material by using high pressure water atomization method | |
| CN106180739B (en) | A kind of aerosolization nozzle being used to prepare minute spherical powder | |
| CN108480652A (en) | It is a kind of to prepare spherical metal powder high efficiency annular distance gas atomizing nozzle | |
| CN106513692A (en) | Atomizing nozzle and method for producing powder | |
| CN212217096U (en) | Spray disk device for preparing superfine low-oxygen subsphaeroidal metal powder | |
| CN105436509B (en) | A kind of metal atomization bilayer restrictive nozzle with electromagnetic field booster action | |
| CN107598178B (en) | Disk is sprayed in multistage free style aerosolization with gas self-loopa function | |
| CN108436093A (en) | A kind of Supersonic atomizer preparing iron-based spherical metal powder using crucible gas atomization | |
| CN206104891U (en) | A gas atomizing nozzle for preparing fine spherical powder | |
| CN113145853B (en) | Gas atomization preparation device and method for spherical metal powder | |
| CN114054764B (en) | Spray pipe atomizer for gas atomization powder preparation | |
| CN204892966U (en) | Fine globular metal powder's of high frequency supersonic speed plasma gas preparation device | |
| CN201693177U (en) | Atomizing nozzle for preparing metal superfine powder | |
| CN111054930A (en) | Annular inert gas atomizing nozzle | |
| CN202174243U (en) | Confined type atomizing nozzle device for preparing metal powder | |
| JP2015000997A (en) | Soft magnetic metal powder production device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |
|
| RJ01 | Rejection of invention patent application after publication |