CN206028681U - But draw casting device on grain refinement - Google Patents
But draw casting device on grain refinement Download PDFInfo
- Publication number
- CN206028681U CN206028681U CN201621070015.6U CN201621070015U CN206028681U CN 206028681 U CN206028681 U CN 206028681U CN 201621070015 U CN201621070015 U CN 201621070015U CN 206028681 U CN206028681 U CN 206028681U
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- China
- Prior art keywords
- feed liquor
- feed tube
- cooler
- grain refinement
- crystal grain
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Abstract
The utility model discloses a but draw casting device on grain refinement, including the foundry furnace who is used for holding metal liquid draw the casting machine on, and set up in cooler and feed liquor pipe in the foundry furnace, wherein, on draw the casting machine set up in the top of cooler, the feed liquor pipe certainly the bottom of cooler penetrates the cooler is fixed, feed liquor socle end is sealed, the lateral wall is all has upwards offered at least round feed liquor hole, and every ring of feed liquor hole is provided with a plurality of feed liquor hole, every the axial in feed liquor hole with the inner wall of feed liquor pipe is tangent towards same direction. Above -mentioned casting device and casting process, metal liquid are spirally when managing through feed liquor hole entering feed liquor, metal liquid forms strong convection and realizes the stirring, restricts and destroys dendritic growth, does benefit to grain refinement, the metal liquid of spiral entering makes the temperature gradient of crystallization forward position metal liquid be spiral distribution, and the grain growing is the hand of spiral, realizes the spiral distribution of crystalline grain.
Description
Technical field
This utility model is related to casting field, especially it is a kind of can crystal grain refinement upper-drawing casting device.
Background technology
Copper bar is, for the raw material for manufacturing electrician's copper conductor such as copper cash, copper bar, electric wire, to have a wide range of applications, and is led to
Frequently with continuous casting and rolling method and upward-casting process production.Upward-casting process utilizes siphon principle, and copper water is introduced after crystallizer not
Disconnected crystallisation by cooling, because which has, floor space is little, one-time investment is few, device structure is simple, expendable part is few, maintenance cost is low
Feature and be widely used.However, the copper bar tissue of up-drawing method production is predominantly along the symmetrical column of copper bar section radius
Crystalline substance, has that tissue is thick and loose, and machinability is poor, and the problems such as rupturing easily occurs.
Utility model content
The purpose of this utility model be propose it is a kind of can crystal grain refinement upper-drawing casting device, its production copper bar crystal grain
Fine microstructures are uniform, and in spiral distribution, copper bar has good comprehensive mechanical property, and subsequent use performance is good.
It is that, up to this purpose, this utility model is employed the following technical solutions：
It is a kind of can crystal grain refinement upper-drawing casting device, including for hold the foundry furnace of molten metal, up casting machine with
And the cooler that is arranged in the foundry furnace and feed tube, wherein, the up casting machine is arranged at the upper of the cooler
Side, the feed tube penetrate the cooler fixed, the feed tube bottom end seal, side wall week from the bottom of the cooler
Offer upwards at least one circle inlet opening, often enclose inlet opening be provided with several inlet openings, the axial direction of each inlet opening with
The inwall of the feed tube is tangent in the same direction.
Wherein, the dead in line of the axis with the feed tube for often enclosing inlet opening.
Wherein, the adjacent inlet opening that often encloses mutually staggers.
Wherein, each described inlet opening along feed liquor direction obliquely, be in radially 5 ° -30 ° with the feed tube.
Wherein, the up casting machine is provided with a pair of traction wheels, and the traction wheel is driven by servomotor.
Wherein, insulation asbestos and graphite protective sleeve are enclosed with outside the cooler successively.
Wherein, the foundry furnace is power frequency induction furnace or intermediate frequency furnace.
Wherein, it is also including drawing bar, described to draw bar for solid hopkinson bar, internal diameter of the external diameter for drawing bar less than the feed tube,
Described one end for drawing bar is connected with the feed tube, and the other end is assemblied in the up casting machine.
It is described in the utility model it is a kind of can crystal grain refinement upper-drawing casting device, the feed liquor tube side wall circumference of casting device
At least one circle inlet opening is offered, inlet opening is often enclosed and is provided with several inlet openings, axial direction and the feed tube of each inlet opening
Inwall is tangent in the same direction；Draw bar and pull crystallized metallic rod upwards, negative pressure is brought to the molten metal of crystallization front, gold
Helically formula, molten metal formation strong convection realization stirring when category liquid enters feed tube by inlet opening, limits and destroys dendrite and give birth to
It is long, beneficial to crystal grain refinement；The spiral molten metal for entering feed tube, makes the thermograde of crystallization front molten metal helically divide
Cloth, grain growth helically direction, realizes the Spiral distribution of crystal grain.
Description of the drawings
Fig. 1 be described in this utility model embodiment it is a kind of can crystal grain refinement upper-drawing casting device structural representation；
Fig. 2 is sectional view of 3 feed tube of part along axis longitudinal section in Fig. 1；
Fig. 3 is perspective view of 3 feed tube of part perpendicular to axis cross section in Fig. 1.
Reference：
1st, foundry furnace；2nd, cooler；21st, asbestos are incubated；22nd, graphite protective sleeve；3rd, feed tube；31st, inlet opening；4th, draw on
Casting machine；41st, traction wheel；5th, draw bar.
Specific embodiment
The technical solution of the utility model is further illustrated below in conjunction with the accompanying drawings and by specific embodiment.
As Figure 1-3, described in the present embodiment it is a kind of can crystal grain refinement upper-drawing casting device, including for holding metal
The foundry furnace 1 of liquid, up casting machine 4 and the cooler 2 being arranged in the foundry furnace 1 and feed tube 3, the up casting
Machine 4 is arranged at the top of the cooler 2, and the feed tube 3 penetrates the cooler 2 from the bottom of the cooler 2 and consolidates
It is fixed, at least one circle inlet opening is offered in 3 bottom end seal of the feed tube, side wall circumference, is often enclosed inlet opening and is provided with several
Inlet opening 31, the axial direction of each inlet opening 31 are tangent in the same direction with the inwall of the feed tube 3；Preferably, it is described
Four circle inlet openings are offered on 3 side wall of feed tube, often circle is provided with four inlet openings 31；Multi-turn inlet opening, it is ensured that liquid inlet volume
Abundance, is not affected by crystallization front.
The dead in line of the axis with the feed tube 3 for often enclosing inlet opening；The adjacent often circle inlet opening phase
Mutually stagger；Be conducive to turbulent flow during molten metal spiral flow, increase stirring convection current and heat exchange, crystal grain thinning；Each institute
Inlet opening 31 is stated along feed liquor direction obliquely, be in 5 ° -30 ° with 3 radial direction of the feed tube；Crystallization front gold when meeting up casting
The convex feature in category liquid liquid cave, can increase molten metal convection current, strengthen to the impact at solid liquid interface, crystal grain thinning.
The up casting machine 4 is provided with a pair of traction wheels 41, and the traction wheel 41 is driven by servomotor；It is capable of achieving
To drawing hauling speed, traction pitch and the control of intermittent time of bar 5, hauling speed is faster, traction pitch is bigger, the wink caused
Between negative pressure it is bigger, molten metal convection current is stronger, and mixing effect is more obvious, and crystal grain refinement is more prominent.
The cooler 2 is outer to be enclosed with insulation asbestos 21 and graphite protective sleeve 22 successively；The insulation asbestos 21 are used for hindering
Heat exchange between cooler interior circulation water and molten metal, the graphite protective sleeve 22 are used for protecting the cooler 2.
The foundry furnace 1 is power frequency induction furnace or intermediate frequency furnace；For being incubated to molten metal in casting process.
Also include drawing bar 5, described to draw bar 5 for solid hopkinson bar, the external diameter for drawing bar 5 is slightly less than the internal diameter of the feed tube 3,
Described one end for drawing bar 5 is connected with the feed tube 3, and the other end is assemblied in the up casting machine 4；The up casting machine 4
The bar 5 that draws is involved, at the solid liquid interface of feed tube 3, the continuous crystallisation by cooling of molten metal forms new metallic rod, and described
Draw bar 5 and drive and gradually involve；Negative pressure is formed after involving, and molten metal is constantly carried out from the inlet opening 31 into the feed tube 3
Crystallization.
As preferred embodiment, oxygen-free copper bar is manufactured with copper liquid, the internal diameter of the feed tube 3 is φ 8.1mm, in institute
State and on the side wall of feed tube 3, open up three circle inlet openings 31, often enclose averagely 4 inlet openings 31 of arrangement, each inlet opening 31
A diameter of 2mm, is in 10 ° with radial direction；The external diameter for drawing bar 5 is φ 7.0mm, and material is fine copper, and one end is placed in the feed tube 3
Bottom, the other end be fixed on the up casting machine 4 wait traction；Copper liquid is contained in foundry furnace 1 and is incubated
1120℃-1150℃；Upper-drawing casting device, adjusting parameter are set up：When traction pitch 8mm, hauling speed 800mm/s, interval
Between 0.12s, the leaving water temperature of recirculated water controlled at 43 ± 2 DEG C, is started the up casting machine 4 and will be drawn bar 5 and involves, and is drawing bar 5
Drive under gradually copper bar is involved；Now a diameter of φ 8mm of copper bar, are almost all equiax crystal, and mean grain size is only
0.5mm, is much better than the grain structure of the copper bar of conventional method production.
As another preferred embodiment, with Kufil liquid silver content be 0.1wt% manufacture Kufil bar, institute
The internal diameter for stating feed tube 3 is φ 16.2mm, opens up 4 circle inlet openings 31 on the side wall of the feed tube 3, often encloses average arrangement 8
Individual inlet opening 31, a diameter of 2mm of each inlet opening 31 is in 15 ° with radial direction；The external diameter for drawing bar 5 is φ 15.0mm,
Material is fine copper, and one end is placed in the bottom of the feed tube 3, and the other end is fixed on the up casting machine 4 and waits traction；Will
Kufil liquid is contained in foundry furnace 1 and is incubated at 1120 DEG C -1150 DEG C；Upper-drawing casting device, adjusting parameter are set up：Lead
Draw pitch 3mm, hauling speed 400mm/s, intermittent time 0.2s, the leaving water temperature of the recirculated water is controlled at 43 ± 2 DEG C, started
The up casting machine 4 will draw bar 5 and involve, and gradually involve copper bar under the drive for drawing bar 5；The now diameter of Kufil bar
For φ 16mm, top layer equiax crystal is more flourishing, and crystal grain is tiny, and center pillar crystalline substance is in spiral distribution, and size is less, is much better than
The grain structure of the Kufil bar of conventional method production.
Described in the present embodiment it is a kind of can crystal grain refinement upper-drawing casting device, draw bar 5 and pull the metallic rod for having solidified
Upwards, the molten metal to crystallization front brings negative pressure, helically formula when molten metal enters feed tube 3 by inlet opening 31, metal
Liquid forms strong convection and realizes stirring, limits and destroys dendritic growth, realize crystal grain refinement, it is not necessary to which applied mechanical is stirred or electricity
Magnetic is stirred；The spiral molten metal for entering feed tube 3, makes the thermograde of crystallization front molten metal in spiral distribution, crystal grain life
Long helically direction, realizes the Spiral distribution of crystal grain；By adjusting the degree of refinement of the controllable crystal grain of Traction Parameters, hauling speed
Faster, traction pitch is bigger, and crystal grain refinement is more prominent；By adjusting size, the quantity of the internal diameter and inlet opening 31 of feed tube 3,
It is applicable to produce the metallic rod of different size.
Know-why of the present utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With new principle, and the restriction to this utility model protection domain can not be construed to by any way.Based on explanation herein,
Those skilled in the art associates other specific embodiments of the present utility model by need not paying performing creative labour,
These modes are fallen within protection domain of the present utility model.
Claims (8)
1. it is a kind of can crystal grain refinement upper-drawing casting device, including for holding foundry furnace (1), the up casting machine of molten metal
And the cooler (2) that is arranged in the foundry furnace (1) and feed tube (3) (4), it is characterised in that：The up casting machine
(4) top of the cooler (2) is arranged at, feed tube (3) penetrate the cooler from the bottom of the cooler (2)
(2) it is and fixed, at least one circle inlet opening is offered in feed tube (3) bottom end seal, side wall circumference, is often enclosed inlet opening and is arranged
There are several inlet openings (31), the axial direction of each inlet opening (31) and the inwall of the feed tube (3) phase in the same direction
Cut.
2. it is according to claim 1 it is a kind of can crystal grain refinement upper-drawing casting device, it is characterised in that：It is described often to enclose feed liquor
The dead in line of the axis in hole and the feed tube (3).
3. it is according to claim 1 it is a kind of can crystal grain refinement upper-drawing casting device, it is characterised in that：Adjacent is described every
Circle inlet opening mutually staggers.
4. it is according to claim 1 it is a kind of can crystal grain refinement upper-drawing casting device, it is characterised in that：Each described feed liquor
Hole (31) obliquely, is in radially 5 ° -30 ° with the feed tube (3) along feed liquor direction.
5. it is according to claim 1 it is a kind of can crystal grain refinement upper-drawing casting device, it is characterised in that：The up casting
Machine (4) is provided with a pair of traction wheels (41), and traction wheel (41) are driven by servomotor.
6. it is according to claim 1 it is a kind of can crystal grain refinement upper-drawing casting device, it is characterised in that：The cooler
(2) insulation asbestos (21) and graphite protective sleeve (22) is enclosed with outward successively.
7. it is according to claim 1 it is a kind of can crystal grain refinement upper-drawing casting device, it is characterised in that：The foundry furnace
(1) it is power frequency induction furnace or intermediate frequency furnace.
8. it is according to claim 1 it is a kind of can crystal grain refinement upper-drawing casting device, it is characterised in that：Also include drawing bar
(5), the bar (5) that draws is solid hopkinson bar, and the external diameter for drawing bar (5) is less than the internal diameter of the feed tube (3), described to draw bar (5)
One end be connected with the feed tube (3), the other end is assemblied in up casting machine (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621070015.6U CN206028681U (en) | 2016-09-22 | 2016-09-22 | But draw casting device on grain refinement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621070015.6U CN206028681U (en) | 2016-09-22 | 2016-09-22 | But draw casting device on grain refinement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206028681U true CN206028681U (en) | 2017-03-22 |
Family
ID=58296090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621070015.6U Expired - Fee Related CN206028681U (en) | 2016-09-22 | 2016-09-22 | But draw casting device on grain refinement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206028681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180618A (en) * | 2016-09-22 | 2016-12-07 | 江西省鹰潭铜产业工程技术研究中心 | A kind of can crystal grain refinement upper-drawing casting device and up casting method |
| CN110461500A (en) * | 2017-03-31 | 2019-11-15 | 日本碍子株式会社 | The manufacturing method of ozzle, casting device and moulding |
-
2016
- 2016-09-22 CN CN201621070015.6U patent/CN206028681U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106180618A (en) * | 2016-09-22 | 2016-12-07 | 江西省鹰潭铜产业工程技术研究中心 | A kind of can crystal grain refinement upper-drawing casting device and up casting method |
| CN110461500A (en) * | 2017-03-31 | 2019-11-15 | 日本碍子株式会社 | The manufacturing method of ozzle, casting device and moulding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20180922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |