CN206028350U - Thin brilliant or superfine brilliant metal rod hot extrusion die of jumbo size - Google Patents
Thin brilliant or superfine brilliant metal rod hot extrusion die of jumbo size Download PDFInfo
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- CN206028350U CN206028350U CN201621038239.9U CN201621038239U CN206028350U CN 206028350 U CN206028350 U CN 206028350U CN 201621038239 U CN201621038239 U CN 201621038239U CN 206028350 U CN206028350 U CN 206028350U
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- mould
- extrusion
- diameter
- charging aperture
- recipient
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Abstract
The utility model provides a thin brilliant or superfine brilliant metal rod hot extrusion die of jumbo size. Extrusion die includes lower mould (1), goes up mould (2), recipient (3) extrusion cushion (4) extrusion axis (5), and wherein lower mould (1) outlet diameter is D, goes up four entrys that mould (2) have evenly distributed, and the diameter is d, and D is greater than d, recipient (3) contain the diameter for four holes of D, and the entry centre of a circle that the centre of a circle and the last mould in its hole are (2) four corresponds, extrusion axis is four extrusion axis (5) with the recipient reciprocal distribution. The washing on the rod surface in the middle of the repeated extrusion process has been avoided in flowing the mould to the cinder, defect etc. That have effectively prevented the ingot casting surface. The utility model provides an extrusion cushion then easily realizes the automation of course of working if adopt fixed extrusion cushion. Through 2 4 passage extrusion back, crystal grain size can refine micron or submicron, and the mechanical properties of extrusion rod is obviously improved.
Description
Technical field
This utility model belongs to Metal Forming field, more particularly to a kind of large scale fine grain or ultrafine grain metal bar
Hot-extrusion mold.
Background technology
Crystal grain thinning is a kind of effective means for improving metal material performance, and metal current material thinning method can be divided into
Physics and chemical two big class.Physical method includes that deformation process refinement method, physical field refinement, method for quick cooling, mechanical-physical are thin
Change method；Chemical method can be divided into addition fining agent with the rotten agent method of addition.Its other party in addition to deformation process thinning method
Method, is mainly used in metal solidification process, and the effect highest of its crystal grain thinning can reach tens microns even more than ten microns
Rank.Only just to make metal material refine to micron order even more little for deformation process method, but adopts deformation process side
The fine grain and ultrafine grain metal product stock size that formula is obtained is less, such as Equal Channel Angular Pressing method, which greatly limits correlation
The application of metal material.
Therefore, it is necessary to from a kind of new fine crystalline metal material extrusion die is researched and developed, this mould can squeeze out larger
The product of sectional area, while the crystallite dimension of product can refine to micron even submicron level.
Utility model content
In order to overcome above-mentioned deficiency, this utility model to provide a kind of large scale fine grain or ultrafine grain metal bar hot extruding die
Tool and pressing method.Bar enters mould by recipient first, and as mould is flat-die, the dead band formed in extruding can
The stream such as oxide skin, the defect on ingot casting surface is prevented in mould, after clean bar enters mould, due to lower mould cross sectional dimensions
It is more or less the same with upper mould size, under plus load effect, bar occurs detrusion, and subsequent four bars converge in lower mould
Close, flow out from the outlet of lower mould through another deformation.Subsequently recipient is separated with mould, discard is cut off, one is completed completely
Extruding action.
To achieve these goals, this utility model is adopted the following technical scheme that：
A kind of large scale fine grain or ultrafine grain metal bar hot-extrusion mold, including：Lower mould, upper mould, recipient, extruding
Axle；The mould is flat-die, and the lower mould is provided with the discharging opening of a diameter of D, and the upper mould is evenly arranged with multiple a diameter of d
Charging aperture；The recipient is provided with multiple, squeezing passages of a diameter of D one-to-one with the upper mould charging aperture, institute
State；The D is more than d；After die-filling, the lower mould surrounds cavity with upper mould, described
The feed end of squeezing passage is docked with the charging aperture of upper mould, and the center of circle of the upper mould charging aperture is located at the axle center of correspondence squeezing passage
On line.
Preferably, the upper mould is provided with 3～5 equally distributed charging apertures.
It is furthermore preferred that when the charging aperture number is set to 4, D/d=1.2～2.0, i.e.,：Lower mould outlet diameter D
20%-100% bigger than upper mould inlet diameter d.Research finds：If D/d is more than 2, will be because of the material flow rates of mold entrance
Less than lower mould outlet flow velocity, and cause in Die ＆ Mould Forming Process resistance not enough, when material is not completely filled with mould just from
Lower mould outlet is flowed out, and makes the bar existing defects of extruding.
In the same manner, when the charging aperture number is set to 3, D/d=1.2～1.7；
When the charging aperture number is set to 5, D/d=1.2～2.2.
Preferably, dummy block is additionally provided with the middle of the squeezing passage and extrusion axis.
Preferably, the diameter of pending metal bar is identical with the squeezing passage.
This utility model additionally provides a kind of large scale fine grain or ultrafine grain metal bar hot-extrusion method, including：
The thermometal bar of N roots a diameter of D is put into recipient once to be extruded；
After the completion of extruding, bar is cut to into isometric N sections, is reheated, carry out secondary extrusion；
Repeat the above steps, until the crystal grain refinement of bar is to target size.
" target size " described in this utility model is referred to：Crystallite dimension is refine to into micron or submicron order.
In the present invention, " N " is the natural number more than zero.
Preferably, N is 3,4 or 5.
Preferably, the extrusion temperature is higher than the recrystallization temperature of metal to be extruded 50 DEG C -250 DEG C.
Preferably, increase with extruding passage, extrusion temperature is gradually lowered.
Preferably, described " repeat the above steps are until the grain structure of bar refine to target size " is repetition 2-3 time.
This utility model additionally provides the large scale fine grain or ultrafine grain metal bar prepared using arbitrary said method, institute
State the crystal grain refinement to 0.5-2 μm of metal bar.
The beneficial effects of the utility model
(1) in this utility model, as mould is flat-die, the dead band formed in extruding can prevent ingot casting surface
Oxide skin, defect etc. are flowed in mould, it is to avoid repeat the cleaning of the Surface of Rod Bar in the middle of extrusion process.In this utility model
Dummy block is then easily achieved the automatization of the course of processing according to fixation extrusion pad.After the extruding of 2-4 passages, crystallite dimension
Micron or submicron order can be refine to, the mechanical property of extruded barses is improved significantly.
(2) diameter of rod and recipient consistent size of this utility model extruding, thus, the bar for squeezing out can cut off
After be reentered into recipient, carry out secondary extrusion, through 2-4 passages extruding after, the crystallite dimension of bar can reach micron order
Or even submicron order.Using extrusion die of the present utility model, can produce and extrusion billet diameter identical large scale fine grain
Metal bar, the bar of production not only can carry out secondary operations as intermediate products but also can be used as final products, its mechanical property
Can be significantly improved compared with original blank.
(3) this utility model apparatus structure is simple, practical, easy to spread.
Description of the drawings
Fig. 1 is recipient mould side view.Wherein, 1 is lower mould, and 2 is upper mould, and 3 is recipient, and 4 is dummy block, and 5 is crowded
Last item.
Fig. 2 is recipient mould upward view.
Specific embodiment
By the following examples this utility model feature and other correlated characteristics are described in further detail, in order to same
The understanding of industry technology personnel：
Embodiment 1：
A kind of large scale fine grain or ultra-fine grained magnesium alloy bar hot-extrusion mold and pressing method, extrusion die include lower mould
(1), upper mould (2), recipient (3) dummy block (4) extrusion axis (5), wherein descend mould (1) outlet diameter to be 60mm, and upper mould (2) have
Four entrances of even distribution, a diameter of 40mm；Described recipient (3) containing a diameter of 60mm four holes, the center of circle in its hole with
The entrance center of circle correspondence that upper mould is (2) four, the extrusion axis is four extrusion axises (5) of distribution corresponding with recipient.
The first passage is extruded successively by four equal lengths, a diameter of 60mm, it is crowded that temperature is that 450 DEG C of magnesium alloy rod is put into
Pressure cylinder starts extruding.Extruding is finished 4 sections of bar cut-out equal length, reheats extruding.
Second passage extrusion temperature is 400 DEG C, and the 3rd passage extrusion temperature is 350 DEG C.
1-2 μm can be refine to through the grain structure of three passage extrusion magnesium alloy bars.
Embodiment 2：
A kind of large scale fine grain or Ultra-fine Grained rods and bars of aluminium alloy hot-extrusion mold and pressing method, extrusion die include lower mould
(1), upper mould (2), recipient (3) dummy block (4) extrusion axis (5), wherein descend mould (1) outlet diameter to be 100mm, and upper mould (2) have
Equally distributed four entrances, a diameter of 60mm；Four holes of described recipient (3) containing a diameter of 100mm, the center of circle in its hole
Corresponding with the upper mould entrance center of circle of (2) four, the extrusion axis is four extrusion axises (5) of distribution corresponding with recipient.
The first passage is extruded successively by four equal lengths, a diameter of 100mm, temperature are that 480 DEG C of rods and bars of aluminium alloy is put into
Recipient starts extruding.Extruding is finished 4 sections of bar cut-out equal length, reheats extruding.
Second passage extrusion temperature is 450 DEG C, and the 3rd passage extrusion temperature is 420 DEG C, and four-pass extrusion temperature is 400
℃。
0.5-1 μm can be refine to through the grain structure of 4 passage extruding aluminium alloy bars.
Embodiment 3
A kind of large scale fine grain or ultrafine grain metal bar hot-extrusion mold, including：Lower mould (1), upper mould (2), recipient
(3), extrusion axis (5)；The mould is flat-die, and lower mould (1) is provided with the discharging opening of a diameter of D, and the upper mould uniformly sets
It is equipped with the charging aperture of multiple a diameter of d；Recipient (3) be provided with it is multiple it is one-to-one with upper mould (2) charging aperture,
The squeezing passage of a diameter of D, is provided with corresponding extrusion axis (5) in the squeezing passage；The D is more than d；It is after die-filling, described
Lower mould (1) surrounds cavity with upper mould (2), and the feed end of the squeezing passage is docked with the charging aperture of upper mould (2), the upper mould
(2) center of circle of charging aperture is located on the axial line of correspondence squeezing passage.
Embodiment 4
A kind of large scale fine grain or ultrafine grain metal bar hot-extrusion mold, including：Lower mould (1), upper mould (2), recipient
(3), extrusion axis (5)；The mould is flat-die, and lower mould (1) is provided with the discharging opening of a diameter of D, and the upper mould uniformly sets
It is equipped with the charging aperture of multiple a diameter of d；Recipient (3) be provided with it is multiple it is one-to-one with upper mould (2) charging aperture,
The squeezing passage of a diameter of D, is provided with corresponding extrusion axis (5) in the squeezing passage；The D is more than d；It is after die-filling, described
Lower mould (1) surrounds cavity with upper mould (2), and the feed end of the squeezing passage is docked with the charging aperture of upper mould (2), the upper mould
(2) center of circle of charging aperture is located on the axial line of correspondence squeezing passage.
Upper mould (2) are provided with 3 equally distributed charging apertures, wherein, D/d=1.2～1.7.
Embodiment 5
A kind of large scale fine grain or ultrafine grain metal bar hot-extrusion mold, including：Lower mould (1), upper mould (2), recipient
(3), extrusion axis (5)；The mould is flat-die, and lower mould (1) is provided with the discharging opening of a diameter of D, and the upper mould uniformly sets
It is equipped with the charging aperture of multiple a diameter of d；Recipient (3) be provided with it is multiple it is one-to-one with upper mould (2) charging aperture,
The squeezing passage of a diameter of D, is provided with corresponding extrusion axis (5) in the squeezing passage；The D is more than d；It is after die-filling, described
Lower mould (1) surrounds cavity with upper mould (2), and the feed end of the squeezing passage is docked with the charging aperture of upper mould (2), the upper mould
(2) center of circle of charging aperture is located on the axial line of correspondence squeezing passage.
Upper mould (2) are provided with 4 equally distributed charging apertures, wherein, D/d=1.2～2.0.Research finds：If D/d
More than 2, lower mould outlet flow velocity will be less than because of the material flow rates of mold entrance, and cause to hinder in Die ＆ Mould Forming Process
Power is not enough, just flows out from the outlet of lower mould when material is not completely filled with mould, makes the bar existing defects of extruding.
Embodiment 6
A kind of large scale fine grain or ultrafine grain metal bar hot-extrusion mold, including：Lower mould (1), upper mould (2), recipient
(3), extrusion axis (5)；The mould is flat-die, and lower mould (1) is provided with the discharging opening of a diameter of D, and the upper mould uniformly sets
It is equipped with the charging aperture of multiple a diameter of d；Recipient (3) be provided with it is multiple it is one-to-one with upper mould (2) charging aperture,
The squeezing passage of a diameter of D, is provided with corresponding extrusion axis (5) in the squeezing passage；The D is more than d；It is after die-filling, described
Lower mould (1) surrounds cavity with upper mould (2), and the feed end of the squeezing passage is docked with the charging aperture of upper mould (2), the upper mould
(2) center of circle of charging aperture is located on the axial line of correspondence squeezing passage.
Upper mould (2) are provided with 5 equally distributed charging apertures, wherein, D/d=1.2～2.2.
Finally it should be noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to
This utility model, although being described in detail to this utility model with reference to the foregoing embodiments, for those skilled in the art
For member, which still can be modified to the technical scheme described in previous embodiment, or which part is equal to
Replace.It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in
Within protection domain of the present utility model.Although the above-mentioned accompanying drawing that combines is retouched to specific embodiment of the present utility model
State, but the not restriction to this utility model protection domain, one of ordinary skill in the art are should be understood that in skill of the present utility model
On the basis of art scheme, the various modifications or deformation that those skilled in the art are made by need not paying creative work still exist
Within protection domain of the present utility model.
Claims (7)
1. a kind of large scale fine grain or ultrafine grain metal bar hot-extrusion mold, including：Lower mould, upper mould, recipient, extrusion axis；
Characterized in that, the mould is flat-die, the lower mould is provided with the discharging opening of a diameter of D, and the upper mould is evenly arranged with many
The charging aperture of individual a diameter of d；The recipient is provided with multiple one-to-one with the upper mould charging aperture, a diameter of D crowded
Pressure passageway, is provided with corresponding extrusion axis in the squeezing passage；The D is more than d；After die-filling, the lower mould is surrounded with upper mould
Cavity, the feed end of the squeezing passage are docked with the charging aperture of upper mould, and the center of circle of the upper mould charging aperture is located at correspondence extruding
On the axial line of passage.
2. mould as claimed in claim 1, it is characterised in that the upper mould is provided with 3～5 and is uniformly distributed charging aperture.
3. mould as claimed in claim 2, it is characterised in that when the charging aperture number is set to 3, the D/d=1.2
～1.7.
4. mould as claimed in claim 2, it is characterised in that when the charging aperture number is set to 4, the D/d=1.2
～2.0.
5. mould as claimed in claim 2, it is characterised in that when the charging aperture number is set to 5, the D/d=1.2
～2.2.
6. mould as claimed in claim 1, it is characterised in that be additionally provided with extruding in the middle of the squeezing passage and extrusion axis
Pad.
7. mould as claimed in claim 1, it is characterised in that the diameter of pending metal bar and the squeezing passage phase
Together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038239.9U CN206028350U (en) | 2016-09-05 | 2016-09-05 | Thin brilliant or superfine brilliant metal rod hot extrusion die of jumbo size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038239.9U CN206028350U (en) | 2016-09-05 | 2016-09-05 | Thin brilliant or superfine brilliant metal rod hot extrusion die of jumbo size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206028350U true CN206028350U (en) | 2017-03-22 |
Family
ID=58299112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621038239.9U Withdrawn - After Issue CN206028350U (en) | 2016-09-05 | 2016-09-05 | Thin brilliant or superfine brilliant metal rod hot extrusion die of jumbo size |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206028350U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140856A (en) * | 2016-09-05 | 2016-11-23 | 山东省科学院新材料研究所 | A kind of large scale is carefully brilliant or ultrafine grain metal bar hot-extrusion mold and pressing method |
| WO2021169513A1 (en) * | 2020-02-26 | 2021-09-02 | 凯维思轻量化智能制造研究院(菏泽)有限公司 | Extrusion die, apparatus and method for implementing bidirectional extrusion molding process |
-
2016
- 2016-09-05 CN CN201621038239.9U patent/CN206028350U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140856A (en) * | 2016-09-05 | 2016-11-23 | 山东省科学院新材料研究所 | A kind of large scale is carefully brilliant or ultrafine grain metal bar hot-extrusion mold and pressing method |
| CN106140856B (en) * | 2016-09-05 | 2018-01-12 | 山东省科学院新材料研究所 | A kind of large scale fine grain or ultrafine grain metal bar hot-extrusion mold and pressing method |
| WO2021169513A1 (en) * | 2020-02-26 | 2021-09-02 | 凯维思轻量化智能制造研究院(菏泽)有限公司 | Extrusion die, apparatus and method for implementing bidirectional extrusion molding process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20180112 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20180112 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |