CN206241267U - The centrifugal atomizing fuel pulverizing plant of high-performance solder powder - Google Patents
The centrifugal atomizing fuel pulverizing plant of high-performance solder powder Download PDFInfo
- Publication number
- CN206241267U CN206241267U CN201621383859.6U CN201621383859U CN206241267U CN 206241267 U CN206241267 U CN 206241267U CN 201621383859 U CN201621383859 U CN 201621383859U CN 206241267 U CN206241267 U CN 206241267U
- Authority
- CN
- China
- Prior art keywords
- flour mill
- solder powder
- nozzle
- lid
- inlet pipe
- 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.)
- Active
Links
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Crushing And Grinding (AREA)
Abstract
Lid, high-speed electric expreess locomotive, motor shaft, rotation dish, nozzle, N on the centrifugal atomizing fuel pulverizing plant of high-performance solder powder, including tin stove, flour mill tank body, flour mill2Air inlet pipe, high-speed electric expreess locomotive is fixed on flour mill tank body by electric machine support, and rotation dish is threadedly coupled with motor shaft, and thread rotary orientation is opposite with high-speed electric expreess locomotive rotation direction, rotation dish upper surface is concave curvature, tangent line at concave curvature profile edge is parallel with lid section inwall oblique line on flour mill, and lid is fixed on flour mill tank body on flour mill, and lid is shaped as infundibulate on flour mill, tin stove is fixed on exterior surface on flour mill, nozzle is connected with tin furnace bottom, nozzle bottom Zheng Duixuandie centers, two N2Air inlet pipe is symmetrically mounted on lid side on flour mill, N2Air inlet pipe is inclined downwards and horizontal by 5 ° of angles.The utility model ensures that solder powder does not collide in forming process, reaches the purpose for reducing special-shaped powder ratio so that the quality of solder powder is significantly improved, with practical value very high.
Description
Technical field
The utility model is related to a kind of centrifugal atomizing fuel pulverizing plant of high-performance solder powder.
Background technology
Electronic Assemblies technique has been enter into high density, miniaturization, high efficiency stage at present by the development of decades.Electronics
Welding procedure experienced from the welding of manual flatiron, THT through hole wave solderings, to SMT surface mount reflow solderings.Electronic welding is used
Solder develops into high-accuracy solder(ing) paste by initial tin silk, tin bar.Solder(ing) paste chief component is the weldering of various metal ingredients
Glass putty.
The manufacturing process of solder powder mainly has three kinds：
1st, aeroponics, because glass putty oxygen content of poor quality is high and is difficult to control to, have been rarely employed.
2nd, centrifugal atomizing powder, yield is big, and low cost, technique is easily controlled, and glass putty quality is general, is tin main at present
Powder manufacturing process.The solder powder of various particle diameters can be prepared by changing parameter.
3rd, ultrasonic atomization, glass putty quality is good, is mainly used in requirement field higher.But production capacity is relatively low, high cost, only
20% or so of centrifugal atomizing technique, and due to the limitation of ultrasonic atomizatio principle, for the fine powder hardly possible that particle diameter is less than 15 μm
To produce in batches.
In the prior art, the technique of centrifugal atomizing is, by the solder of high temperature fused state, to be flowed into through nozzle from top tin stove
On the rotation dish of high-speed rotation, by revolving the centrifugal force of dish, solder drop is got rid of to full of N2The powder room processed of gas, and cool down rapidly
Solidification, shape face solder powder is fallen into lower section flour mill tank body and is collected.In solder powder centrifugal atomizing production process due to glass putty motion and
Additional N2Effect, be easy to produce disorderly air-flow in the spray chamber of conventional powder manufacturing apparatus.Space layout, N in spray chamber2
The angle and direction of rotation dish is left in the interference of inlet air flow, solder, makes solder that the motion of various tracks is produced with disorderly air-flow, Gu
Body glass putty, scolding tin drop and semi-molten state solder grain collide, and form the special-shaped powder of various forms.Special-shaped powder is to tin
The harm of cream is very large, causes the paste solder printing lost of life, yield decline, viscosity to raise, block steel mesh, even fail.Cause
This, the special-shaped powder problems demand on the high side of centrifugal atomizing is solved.
Utility model content
For the deficiency that background technology is proposed, a kind of centrifugal atomizing of high-performance solder powder of the utility model research and design
Fuel pulverizing plant, its object is to：A kind of effective collision for reducing scolding tin particle during separation and curing molding is provided, is improved
The centrifugal atomizing fuel pulverizing plant of the high-performance solder powder of centrifugal atomizing glass putty quality.
Technical solution of the present utility model：
The centrifugal atomizing fuel pulverizing plant of high-performance solder powder, it is characterised in that：Including tin stove, flour mill tank body, flour mill
Upper lid, high-speed electric expreess locomotive, motor shaft, rotation dish, nozzle, N2Air inlet pipe, the high-speed electric expreess locomotive is fixed on flour mill by electric machine support
On tank body, the rotation dish is threadedly coupled with motor shaft, and thread rotary orientation is with high-speed electric expreess locomotive rotation direction conversely, rotation dish upper surface is recessed
Curved surface is fallen into, the tangent line at concave curvature profile edge is parallel with lid section inwall oblique line on flour mill, cover solid on the flour mill
Due on flour mill tank body, lid is shaped as infundibulate on flour mill, and the tin stove is fixed on exterior surface on flour mill, the spray
Mouth is connected with tin furnace bottom, the nozzle bottom Zheng Duixuandie centers, the N2Air inlet pipe is two, two N2Air inlet pipe pair
Claim to be arranged on lid side, N on flour mill2Air inlet pipe is inclined downwards and horizontal by 5 ° of angles.
Lid is provided with cooling sandwith layer on the flour mill tank body, flour mill.
The flour mill tank body is connected by closed conduit with screening machine, it is ensured that powder processed, screening are in N2Gas is protected
Under retaining ring border.
Heat insulating device is provided with the tin stove.
The nozzle is stainless steel, and nozzle bore and outer surface are by precise polished.
The high-speed electric expreess locomotive maximum speed be 80000r/min, in high-speed electric expreess locomotive lead to cooling and lubricating device, and have temperature control and
Frequency conversion speed-adjusting system.
The N2Automatic pressure detection and flow control system are provided with air inlet pipe.
Vertical range between the nozzle and rotation dish is 2-5cm.
The beneficial effects of the utility model：The utility model is novel in design, rational in infrastructure, and lid on flour mill is fabricated to Lou
Bucket shape, forms a specific space in flour mill, prevents solder powder to being flown away above centrifugation drop layer；Air inlet pipe is set
It is symmetrical two, and equidirectional is rotated from side arrangement with rotation dish, air inlet pipe inclines downwards 5 °, and the glass putty of motion is formed
Downward cyclone；Rotation dish surface is made concave curvature, the section tangent line at curved edges is parallel with upper lid section oblique line, makes solder
Leave movement locus and upper lid inwall keeping parallelism after rotation dish, it is ensured that solder powder does not collide in forming process, reaches and subtracts
The purpose of few abnormity powder ratio so that the quality of solder powder is significantly improved, with practical value very high.
Brief description of the drawings
Fig. 1 is the cross-sectional view of existing common solder powder centrifugal atomizer.
Fig. 2 is the structural representation of existing common solder powder centrifugal atomizer.
Fig. 3 is the cross-sectional view of existing common solder powder centrifugal atomizer inward turning dish.
Fig. 4 is cross-sectional view of the present utility model.
Fig. 5 is structural representation of the present utility model.
Fig. 6 is rotation dish cross-sectional view of the present utility model.
Fig. 7 is the special-shaped powder topography scan electron micrograph that existing common centrifugation flour mill is produced.
Fig. 8 is the glass putty electron scanning micrograph of existing common centrifugation flour mill production.
Fig. 9 is the glass putty electron scanning micrograph of the utility model production.
Specific embodiment
The utility model is described further below in conjunction with drawings and Examples.
As shown in Figures 4 to 6, the centrifugal atomizing fuel pulverizing plant of high-performance solder powder includes tin stove 8, flour mill tank body 1, system
7-1, high-speed electric expreess locomotive 3, motor shaft 10, rotation dish 4-1, nozzle 5, N are covered on powder machine2Air inlet pipe 9-1, high-speed electric expreess locomotive 3 is by motor branch
Frame 2 is fixed on flour mill tank body 1, and rotation dish 4-1 is threadedly coupled with motor shaft 10, thread rotary orientation and the rotation direction of high-speed electric expreess locomotive 3
Conversely, rotation dish 4-1 upper surfaces are concave curvature, 7-1 section inwalls are covered on the tangent line at concave curvature profile edge and flour mill
Oblique line is parallel, 7-1 is covered on flour mill and is fixed on flour mill tank body 1,7-1 is covered on flour mill and is shaped as infundibulate, and tin stove 8 is fixed
7-1 outer surfaces are covered on flour mill, nozzle 5 is connected with the bottom of tin stove 8, and the bottom of nozzle 5 is just to Xuan Die 4-1 centers, N2Air inlet
Pipe 9-1 is two, two N2Air inlet pipe 9-1 is symmetrically mounted on and 7-1 sides, N is covered on flour mill2Air inlet pipe 9-1 is inclined downwards simultaneously
7-1 is covered horizontal by 5 ° of angles, on flour mill tank body 1, flour mill and is provided with cooling sandwith layer 11, flour mill tank body 1 is by close
Stopped pipe road 12 is connected with screening machine, it is ensured that powder processed, screening are in N2Under gas shield environment, insulation is provided with tin stove 8
Heat-proof device, nozzle 5 is stainless steel, and the endoporus of nozzle 5 and outer surface are by precise polished, the maximum speed of high-speed electric expreess locomotive 3
It is 80000r/min, cooling and lubricating device is led in high-speed electric expreess locomotive 3, and have temperature control and frequency conversion speed-adjusting system, N2Set on air inlet pipe 9-1
Automatic pressure detection and flow control system are equipped with, the vertical range between nozzle 5 and rotation dish 4-1 is 2-5cm.
As shown in Figure 1 to Figure 3, the technique of centrifugal atomizing is N2Entered in flour mill tank body 1 by air inlet pipe 9, high-temperature fusion
The solder of state is flowed on the rotation dish 4 of high-speed rotation from top tin stove 8 through nozzle 5, by revolving the centrifugal force of dish 4, due at a high speed
Centrifugal action, is thrown away rapidly along movement locus 6, forms liquid mist；Liquid mist is thrown toward full of N2The powder processed of gas
Room, and rapid cooled and solidified, shape face solder powder, fall into lower section flour mill tank body 1 and collect, solder powder centrifugal atomizing production process
In due to glass putty motion and additional N2Effect, be easy to produce disorderly air-flow in the spray chamber of conventional powder manufacturing apparatus.
The course of work：
The solder alloy input tin stove 8 that will be prepared in proportion heats and melts and be incubated, with draw point plug nozzle hole；Start
Cooling water system, makes in flour mill tank body 1 temperature stabilization at 25 DEG C；Open N2Air inlet pipe 9-1, pressure is produced in flour mill tank body 1
Power is set to 0.2MPa, keeps malleation to prevent air from entering；When oxygen content is less than 90PPM in flour mill tank body 1, start at a high speed
Motor 3, slowly accelerates to more than 25000r/min（Adjusted according to Production requirement）；Nozzle 5 is opened, extraction gets lodged in the steel on nozzle bore
Pin, liquid solder flows into the Xuan Die 4-1 centers of rotation at a high speed by deadweight from nozzle 5, rapid due to the effect of high speed centrifugation power
Thrown away along movement locus 6-1, form liquid mist；In N2Solid powder particles are cooled into protective gas；Solid glass putty
Grain is moved downward with cyclone, and screening machine is led to through the closed conduit 12 of the bottom of flour mill tank body 1, and screening after the assay was approved, is packed
Finished product.
Comparative example：
Closed to each addition Sn96.5Ag3.0Cu0.5 lead-free solders in conventional flour mill and tin stove of the present utility model simultaneously
Golden 50kg, temperature is set as 320 DEG C, and inserts nozzle bore with draw point；When temperature reaches setting value, N is opened2Air inlet pipe, pressure
Power is set as 0.1MPa；Start recirculated cooling water, temperature is set as 25 DEG C；When temperature stabilization is in 25 ± 1 DEG C of setting value, powder room processed
When interior oxygen content is less than 90PPM, start high-speed electric expreess locomotive；15000r/min is at the uniform velocity added to from 0r/min with 5min is not less than, is held
Reforwarding turns 5min, observes high-speed electric expreess locomotive situation, and high-speed electric expreess locomotive temperature may not exceed 80 DEG C, and operating has no abnormal sound；Slowly accelerate to again
30000r/min, dally 5min, observes high-speed electric expreess locomotive situation；The draw point on nozzle is pulled up, liquid solder is by deadweight from nozzle
The Xuan Die centers of rotation at a high speed are flowed into, due to the effect of high speed centrifugation power, and is thrown away along movement locus 5 rapidly, form liquid mist
Drop；In N2Solid powder particles are cooled into protective gas；Solid powder particles are moved downward with cyclone, through tank base
Closed conduit leads to screening machine；Screening after the assay was approved, packed products, in pulverizing process powder indoor temperature processed remain 25 ±
1 DEG C, oxygen content is less than 90PPM.
By above-mentioned identical parameters Sn96.5Ag3.0Cu0.5-T4 glass puttys are produced with two sets of powder manufacturing apparatuses.That does not transform is normal
Rule flour mill generates various bad special-shaped powder because producing disorderly air-flow, various solder grains mutually to collide in powder room processed,
As shown in Figure 7, Figure 8, special-shaped powder proportion is larger, influences glass putty quality；As shown in figure 9, the flour mill after improving, because of powder processed
The downward spiral cyclone of indoor formation rule, solder grain is by throwing away the priority order of rotation dish helically track 6-1 downwards successively
Collision between motion, solder grain is reduced, and is particularly controlled with liquid and interfering for semi-molten state particle, abnormity
Powder produces probability to be greatly reduced.Existing conventional flour mill is as shown in table 1 with the application effect contrast of the utility model device, table
Middle sample 1 is that sample 2 is the made glass putty of the utility model in commonly using the made glass putty of rule flour mill, table.
The conventional flour mill of table 1 is contrasted with application effect of the present utility model
Remarks：1st, glass putty particle diameter detects that strip, oval glass putty can only be offered an explanation, and major part is not with laser particle analyzer
Regular powder is in qualified particle size range.
2nd, glass putty sphericity test, glass putty major and minor axis are only surveyed according to standard, and dimension scale is less than 1.2, therefore can only be to length
Bar shaped, oval glass putty are judged to unqualified.
3rd, the detection GB of irregular powder is not specified by.100 glass puttys are selected with stereoscan photograph upper ledge, it is all irregular
Powder accounts for the ratio of detection sample.
4th, glass putty oxygen content uses PULSE HEATING, infrared detection mode.
From experiment test correction data in Fig. 7~Fig. 9 and table 1 and, glass putty pattern prepared by the utility model device,
The indices such as yield rate, oxygen content are superior to the glass putty of conventional centrifugal atomization tin powder process units preparation, the utility model pair
The manufacture demand of high-quality glass putty, has great importance in high-precision electronic process for assembling and welding.
Claims (8)
1. the centrifugal atomizing fuel pulverizing plant of high-performance solder powder, it is characterised in that：Including on tin stove, flour mill tank body, flour mill
Lid, high-speed electric expreess locomotive, motor shaft, rotation dish, nozzle, N2Air inlet pipe, the high-speed electric expreess locomotive is fixed on flour mill tank by electric machine support
On body, the rotation dish is threadedly coupled with motor shaft, and thread rotary orientation is with high-speed electric expreess locomotive rotation direction conversely, rotation dish upper surface is depression
Curved surface, the tangent line at concave curvature profile edge is parallel with lid section inwall oblique line on flour mill, is covered on the flour mill and fixed
In on flour mill tank body, lid is shaped as infundibulate on flour mill, and the tin stove is fixed on exterior surface on flour mill, the nozzle
It is connected with tin furnace bottom, the nozzle bottom Zheng Duixuandie centers, the N2Air inlet pipe is two, two N2Air inlet pipe is symmetrical
The lid side on flour mill, N2Air inlet pipe is inclined downwards and horizontal by 5 ° of angles.
2. the centrifugal atomizing fuel pulverizing plant of high-performance solder powder as claimed in claim 1, it is characterised in that：The flour mill tank
Lid is provided with cooling sandwith layer on body, flour mill.
3. the centrifugal atomizing fuel pulverizing plant of high-performance solder powder as claimed in claim 1, it is characterised in that：The flour mill tank body
It is connected with screening machine by closed conduit, it is ensured that powder processed, screening are in N2Under gas shield environment.
4. the centrifugal atomizing fuel pulverizing plant of high-performance solder powder as claimed in claim 1, it is characterised in that：Set on the tin stove
There is heat insulating device.
5. the centrifugal atomizing fuel pulverizing plant of high-performance solder powder as claimed in claim 1, it is characterised in that：The nozzle is stainless
Steel matter, nozzle bore and outer surface are by precise polished.
6. the centrifugal atomizing fuel pulverizing plant of high-performance solder powder as claimed in claim 1, it is characterised in that：The high-speed electric expreess locomotive is most
Rotating speed high is 80000r/min, cooling and lubricating device is led in high-speed electric expreess locomotive, and have temperature control and frequency conversion speed-adjusting system.
7. the centrifugal atomizing fuel pulverizing plant of high-performance solder powder as claimed in claim 1, it is characterised in that：The N2In air inlet pipe
It is provided with automatic pressure detection and flow control system.
8. the centrifugal atomizing fuel pulverizing plant of high-performance solder powder as claimed in claim 1, it is characterised in that：The nozzle and rotation dish
Between vertical range be 2-5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621383859.6U CN206241267U (en) | 2016-12-16 | 2016-12-16 | The centrifugal atomizing fuel pulverizing plant of high-performance solder powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621383859.6U CN206241267U (en) | 2016-12-16 | 2016-12-16 | The centrifugal atomizing fuel pulverizing plant of high-performance solder powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206241267U true CN206241267U (en) | 2017-06-13 |
Family
ID=59008061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621383859.6U Active CN206241267U (en) | 2016-12-16 | 2016-12-16 | The centrifugal atomizing fuel pulverizing plant of high-performance solder powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206241267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109093128A (en) * | 2018-09-25 | 2018-12-28 | 大连理工大学 | A kind of device and method preparing superfine low melting point globular metallic powder by drop atomization |
-
2016
- 2016-12-16 CN CN201621383859.6U patent/CN206241267U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109093128A (en) * | 2018-09-25 | 2018-12-28 | 大连理工大学 | A kind of device and method preparing superfine low melting point globular metallic powder by drop atomization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106563810B (en) | The centrifugal atomizing flouring technology and its device of high-performance solder powder | |
| CN106914626B (en) | Preparation device and preparation method of superfine metal powder | |
| CN104475743B (en) | A kind of preparation method of superfine spherical titanium and titanium alloy powder | |
| CN103785846B (en) | The preparation method of a kind of titanium alloy spherical powder at different levels | |
| CN104588673B (en) | A kind of device and method for efficiently preparing metal ball shaped superfine powder | |
| CN205414417U (en) | Device of plasma atomizing preparation high performance powder for vibration material disk | |
| CN105397100B (en) | A kind of preparation method of refining metallic powder and the equipment for realizing this method | |
| CN104493186B (en) | A kind of preparation facilities of homogeneous spherical micro-particle and preparation method thereof | |
| CN105689730A (en) | Method for preparing Inconel 625 alloy spherical powder | |
| CN106956008A (en) | A kind of 3D printing preparation method of Hastelloy X-alloy powder | |
| CN106735275B (en) | A kind of metal powder preparation method and device suitable for 3D printing | |
| WO2020063620A1 (en) | Droplet-by-droplet centrifugal atomization manner-based device and method for efficiently preparing low-melting-point spherical metal powders | |
| CN112091216B (en) | Preparation method of high-welding-resistance copper-chromium fine-grain composite contact | |
| CN107716934A (en) | A kind of preparation method of Inconel718 alloy powders for 3D printing technique | |
| CN114192790B (en) | Spherical titanium and titanium alloy powder preparation device and method | |
| CN107570719A (en) | Metal powder preparation method and device | |
| CN206662279U (en) | A kind of preparation facilities of submicron metal | |
| CN206241267U (en) | The centrifugal atomizing fuel pulverizing plant of high-performance solder powder | |
| JP2023051904A (en) | Low melting point metal or alloy powder atomization manufacturing process | |
| CN107745130B (en) | A kind of high temperature niobium tungsten alloy raw powder's production technology | |
| CN102248173A (en) | Method and equipment for preparing spherical low-oxygen aluminum-based solder powder | |
| CN206335133U (en) | Annular arrangement collision type aerodynamic atomization titanium alloy powder producing equipment | |
| CN106493377B (en) | Annular arrangement collision type aerodynamic atomization titanium alloy powder producing equipment and preparation method | |
| CN110871274B (en) | Titanium alloy powder processing equipment and preparation process | |
| CN113560587A (en) | BGA tin ball smelting and rapid forming method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |