CN109482665A - A kind of dummy block squeezed for titanium alloy profile - Google Patents
A kind of dummy block squeezed for titanium alloy profile Download PDFInfo
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- CN109482665A CN109482665A CN201811508655.4A CN201811508655A CN109482665A CN 109482665 A CN109482665 A CN 109482665A CN 201811508655 A CN201811508655 A CN 201811508655A CN 109482665 A CN109482665 A CN 109482665A
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- Prior art keywords
- reflux
- crush cones
- dummy block
- limited step
- diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C26/00—Rams or plungers; Discs therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of dummy blocks squeezed for titanium alloy profile, including crush cones, transition arc step and reflux limited step.Crush cones are arranged to the form of diameter gradual change, and transition arc step one end connects crush cones maximum outside diameter end, and the other end connects reflux limited step.Crush cones and internal diameter of the container difference and form space, make extrusion ingot blank outer surface metal reverse flow in extrusion process；Transition arc step reduces crush cones and the stress of reflux limited step junction is concentrated, and the metal of reverse flow contacts the blocking of reflux limited step with axis is squeezed in extrusion process, so that extruded product is smoothly detached from axis is squeezed.The configuration of the present invention is simple, utilize the difference of crush cones, reflux limited step and extrusion cylinder inner diameter, the space for squeezing ingot blank extexine metal flow is provided, extrusion process can finally make to squeeze the layering of ingot blank surfaces externally and internally, avoid the profile section filling deletion problem that outer surface metal impurities flow into extrusion die orifice and cause.
Description
Technical field
The invention belongs to technical field of material formation, and in particular, to a kind of dummy block squeezed for titanium alloy profile.
Background technique
It is well known that titanium alloy profile is a kind of important nearly end form semi-finished product, it only needs to machine or be not required on a small quantity
Machining can be made directly to be part application, and structural returns are high, at present various types of aerospace flights at home and abroad
There is extensive application on device.
Wherein, hot extrusion method is the prevailing technology technology for producing titanium alloy profile both at home and abroad at present.In view of surface quality
It is the most important factor for determining titanium alloy profile application, in order to obtain preferable surface quality, when titanium alloy profile squeezes, one
Aspect is needed using anti-oxidation glass coating, carries out protection against oxidation to ingot blank is squeezed, surface when preventing extrusion ingot base from heating
There is hard crisp oxide layer, avoids forming crackle during subsequent extrusion by drawing crack and deteriorating surface quality；On the other hand it needs
To improve extruding lubricating condition using glass lubricant, prevent surface of extruded profiles from forming deeper groove.
Currently used glass lubricant mainly includes outer glassing for squeezing surface of ingot blank and for extrusion ingot
Glass isolator between base and mold.Therefore, extrusion ingot blank outer surface can adhere to a large amount of glass in extrusion process, also can sometimes
There are a small amount of oxide layers.The common cylindrical press of metal fever extrusion process is generallyd use when titanium alloy profile squeezes at present
Pad, effect are to squeeze to terminate to be separated convenient for extruded product with axis is squeezed later, still, when squeezing titanium alloy profile, circle
Cylindricality dummy block can promote extrusion ingot blank outer surface metal and inner layer metal to flow simultaneously to die hole, will lead to and squeeze ingot blank appearance
The foreign matters such as glass, the oxide layer in face flow into die hole with metal, tie up the space of metal flow, substitute metal in section
On filling, cause the filling of profile section discontented.
In summary, it would be highly desirable to it designs a kind of can be avoided and squeezes the dummy block that ingot blank circumferential surface metal flows into die hole, with
Solve the technical problems existing in the prior art.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the purpose of the present invention is mention
For a kind of dummy block that can be avoided ingot blank circumferential surface metal and flow into die hole, including crush cones 1, transition arc step 2 and anti-
Limited step 3 is flowed, the crush cones 1 are arranged to the form of diameter gradual change, and the crush cones 1 utilize the extruding with extruder
Cylinder internal diameter difference forms space squeezing ingot blank rear end, to make extrusion ingot blank outer surface metal reverse flow in extrusion process
It is dynamic；Described 2 one end of transition arc step connects the 1 maximum outside diameter end of crush cones, and the other end connects the reflux limited step
3, the transition arc step 2 is used to reduce crush cones 1 and the stress of 3 junction of reflux limited step is concentrated, the reflux limit
Position step 3 is squeezed for stopping the extruding axis of the metal with extruder of reverse flow in extrusion process to contact to squeeze later
Compacting product are smoothly detached from axis is squeezed.
Preferably, the minimum outer diameter of the crush cones 1 is 25mm-40mm smaller than the internal diameter of the container of extruder, maximum outside diameter
It is 15mm-30mm smaller than the internal diameter of the container of extruder.
Preferably, the minimum outer diameter of the crush cones 1 is 65mm-180mm, maximum outside diameter 75mm-190mm.
Preferably, the transition arc radius of the transition arc step 2 is 5mm-10mm.
Preferably, 3 outer diameter of reflux limited step is 5mm-10mm smaller than the internal diameter of the container of extruder.
Preferably, 3 outer diameter of reflux limited step is 85mm-210mm.
Preferably, the reflux limited step 3 is with a thickness of 15mm-50mm.
Preferably, the dummy block is placed on when use and is squeezed between ingot blank and the extruding axis of extruder, wherein squeezing
1 one end is bored close to extruding ingot blank, and reflux limited step 3 is in contact with extruding axis, is then squeezed.
The present invention has the following advantages and beneficial effects:
1) structure is simple, using the difference of crush cones, reflux limited step and extrusion cylinder inner diameter, provides extrusion ingot
The space of base extexine metal flow；
2) in extrusion process, extruding ingot blank inner layer metal flow inversion is consistent with the direction of extrusion to flow into die hole, squeezes
Ingot blank outer surface metal is opposite with the direction of extrusion to be formed to flow into crush cones diameter, reflux limited step, extrusion cylinder inner wall
In space, finally make to squeeze the layering of ingot blank surfaces externally and internally, so as to avoid outer surface metal impurities flow into extrusion die orifice and cause
Profile section fill deletion problem.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is a kind of overall structure diagram of dummy block squeezed for titanium alloy profile of the invention；
Wherein, the appended drawing reference in attached drawing are as follows:
1- crush cones；2- transition arc step；3- reflux limited step.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In a broad embodiment of the invention, a kind of dummy block squeezed for titanium alloy profile, including crush cones, mistake
Cross arc steps, reflux limited step, wherein
Dummy block overall thickness is preferably 50-150mm,
Preferably, the minimum outer diameter of crush cones is 25mm-40mm smaller than the internal diameter of the container of extruder, and the maximum of crush cones is outer
Diameter is 15mm-30mm smaller than the internal diameter of the container of extruder；
Crush cones utilize with internal diameter of the container difference, squeeze ingot blank rear end formed space, thus make squeeze ingot blank appearance
Face metal reverse flow in extrusion process；
Transition arc step one end connects crush cones maximum outside diameter end, and the other end connects reflux limited step, it is preferable that its
Transition arc radius is 5mm-10mm；
Transition arc step is used to reduce crush cones and the stress of reflux limited step junction is concentrated；
Preferably, reflux limited step outer diameter is 5mm-10mm smaller than the internal diameter of the container of extruder, and reflux limited step is thick
Degree is 15mm-50mm；
Reflux limited step for stops in extrusion process the metal of reverse flow with extruding axis contact, to squeeze it
Extruded product is smoothly detached from axis is squeezed afterwards.
Using the modes of emplacement of dummy block during conventional extrusion when titanium alloy profile squeezes, dummy block is placed on extruding
Between ingot blank and the extruding axis of extruder, wherein crush cones one end close to squeeze ingot blank, and reflux limited step with extruding axis phase
Contact is then squeezed using conventional extrusion process.
The present invention is further expalined and is illustrated with preferred embodiment with reference to the accompanying drawing.
Preferred embodiment 1:
In this preferred embodiment, titanium alloy profile extruding is carried out using the extrusion cylinder of diameter 90mm.The dummy block used is each
The size of structure is as follows, dummy block overall thickness 50mm；1 minimum outer diameter 65mm of crush cones, 1 maximum outside diameter 75mm of crush cones；Transition
Arc steps radius 5mm；The outer diameter 85mm of reflux limited step 3, the thickness 15mm of reflux limited step.
When titanium alloy profile squeezes, using dummy block modes of emplacement during conventional extrusion, dummy block is placed on extruding
Between ingot blank and the extruding axis of extruder, 1 one end of crush cones is in contact close to ingot blank, reflux limited step 3 is squeezed with axis is squeezed,
Then squeezed using conventional extrusion process.In extrusion process, ingot blank inner layer metal flow inversion and the direction of extrusion are squeezed
Unanimously to flow into die hole, extrusion ingot blank outer surface metal is opposite with the direction of extrusion to flow into crush cones diameter, reflux limit
In the space that step and extrusion cylinder inner wall are formed, finally makes to squeeze the layering of ingot blank surfaces externally and internally, avoid the inflow of outer surface metal
Extrusion die orifice.
Preferred embodiment 2:
In this preferred embodiment, titanium alloy profile extruding is carried out using the extrusion cylinder of diameter 220mm.The dummy block used is each
The size of structure is as follows, dummy block overall thickness 150mm；1 minimum outer diameter 180mm of crush cones, 1 maximum outside diameter 190mm of crush cones；It crosses
Cross arc steps radius 10mm；The outer diameter 210mm of reflux limited step 3, the thickness 50mm of reflux limited step.
When titanium alloy profile squeezes, using dummy block modes of emplacement during conventional extrusion, dummy block is placed on extruding
Between ingot blank and the extruding axis of extruder, 1 one end of crush cones is in contact close to ingot blank, reflux limited step 3 is squeezed with axis is squeezed,
Then squeezed using conventional extrusion process.In extrusion process, ingot blank inner layer metal flow inversion and the direction of extrusion are squeezed
Unanimously to flow into die hole, extrusion ingot blank outer surface metal is opposite with the direction of extrusion to flow into crush cones diameter, reflux limit
In the space that step, extrusion cylinder inner wall are formed, finally make to squeeze the layering of ingot blank surfaces externally and internally, avoids the inflow of outer surface metal and squeeze
Pressing mold hole.
It will be understood by those skilled in the art that: it without departing from the principle and spirit of the present invention can be right
These embodiments carry out a variety of change, modification, replacement and modification, and the scope of the present invention is defined by the claims and their equivalents.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Claims (8)
1. a kind of dummy block squeezed for titanium alloy profile, including crush cones (1), transition arc step (2) and reflux limit
Step (3), which is characterized in that
The crush cones (1) are arranged to the form of diameter gradual change,
The crush cones (1) form space using the internal diameter of the container difference with extruder, squeezing ingot blank rear end, to make to squeeze
Briquetting blank outer surface metal reverse flow in extrusion process；
Described transition arc step (2) one end connects crush cones (1) the maximum outside diameter end, and the other end connects the reflux limit
Step (3),
The transition arc step (2) is used to reduce crush cones (1) and the stress of reflux limited step (3) junction is concentrated,
The reflux limited step (3) is for stopping the extruding axis of the metal and extruder of reverse flow in extrusion process to connect
Touching, so that extruded product is smoothly detached from extruding axis after squeezing.
2. dummy block according to claim 1, which is characterized in that the minimum outer diameter of the crush cones (1) is than extruder
The small 25mm-40mm of internal diameter of the container, maximum outside diameter are 15mm-30mm smaller than the internal diameter of the container of extruder.
3. dummy block according to claim 2, which is characterized in that the minimum outer diameter of the crush cones (1) is 65mm-
180mm, maximum outside diameter 75mm-190mm.
4. dummy block according to claim 1, which is characterized in that the transition arc radius of the transition arc step (2)
For 5mm-10mm.
5. dummy block according to claim 1, which is characterized in that reflux limited step (3) outer diameter is than extruder
The small 5mm-10mm of internal diameter of the container.
6. dummy block according to claim 5, which is characterized in that reflux limited step (3) outer diameter is 85mm-
210mm。
7. dummy block according to claim 6, which is characterized in that the reflux limited step (3) is with a thickness of 15mm-
50mm。
8. dummy block according to claim 1-7, which is characterized in that be placed on the dummy block when use crowded
Between briquetting base and the extruding axis of extruder, wherein crush cones (1) one end close to squeeze ingot blank, and reflux limited step (3) with
It squeezes axis to be in contact, then be squeezed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811508655.4A CN109482665A (en) | 2018-12-11 | 2018-12-11 | A kind of dummy block squeezed for titanium alloy profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811508655.4A CN109482665A (en) | 2018-12-11 | 2018-12-11 | A kind of dummy block squeezed for titanium alloy profile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109482665A true CN109482665A (en) | 2019-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811508655.4A Pending CN109482665A (en) | 2018-12-11 | 2018-12-11 | A kind of dummy block squeezed for titanium alloy profile |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08197132A (en) * | 1995-01-24 | 1996-08-06 | Kuroki Kogyosho:Kk | Aluminum extruding parts and its manufacture |
| JP2010089123A (en) * | 2008-10-08 | 2010-04-22 | Showa Denko Kk | Dummy block |
| CN207013474U (en) * | 2017-08-08 | 2018-02-16 | 江苏亚太轻合金科技股份有限公司 | Double floating elastic fixation extrusion pads |
| CN208098921U (en) * | 2017-09-12 | 2018-11-16 | 江苏顺丰铝业有限公司 | A kind of aluminum alloy extruder of shrinkproof tail |
-
2018
- 2018-12-11 CN CN201811508655.4A patent/CN109482665A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08197132A (en) * | 1995-01-24 | 1996-08-06 | Kuroki Kogyosho:Kk | Aluminum extruding parts and its manufacture |
| JP2010089123A (en) * | 2008-10-08 | 2010-04-22 | Showa Denko Kk | Dummy block |
| CN207013474U (en) * | 2017-08-08 | 2018-02-16 | 江苏亚太轻合金科技股份有限公司 | Double floating elastic fixation extrusion pads |
| CN208098921U (en) * | 2017-09-12 | 2018-11-16 | 江苏顺丰铝业有限公司 | A kind of aluminum alloy extruder of shrinkproof tail |
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Application publication date: 20190319 |