CN108311549A - A kind of extrusion forming method of copper piece vacuum temperature adjustment - Google Patents
A kind of extrusion forming method of copper piece vacuum temperature adjustment Download PDFInfo
- Publication number
- CN108311549A CN108311549A CN201810357657.1A CN201810357657A CN108311549A CN 108311549 A CN108311549 A CN 108311549A CN 201810357657 A CN201810357657 A CN 201810357657A CN 108311549 A CN108311549 A CN 108311549A
- Authority
- CN
- China
- Prior art keywords
- temperature
- upper mold
- blank
- carried out
- copper piece
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- 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.)
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Classifications
-
- 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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/001—Extruding metal; Impact extrusion to improve the material properties, e.g. lateral extrusion
-
- 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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
-
- 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
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- 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
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/04—Cooling or heating of press heads, dies or mandrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a kind of extrusion forming methods of copper piece vacuum temperature adjustment, it is characterised in that including：The copper base that initial temperature is 150 DEG C~20 DEG C is placed in and squeezes drag intracavitary, then blank is squeezed under upper mold effect, after upper mold moves to the displacement of design, pressurize is carried out to blank, then vacuumize process is carried out to the device space where upper and lower mould, vacuum degree 0.095MPa~0.09MPa, heating and temperature control are carried out to lower die simultaneously, cavity plate temperature is 20 DEG C~300 DEG C, after cavity plate reaches design temperature, upper mold continues to move downward carries out crimp again to blank, device space is carried out after the completion of extruding to be forced into atmospheric pressure, then upper mold backhaul and feeding.The method of the present invention can increase flow of metal ability, reduce flexible deformation, improve copper piece comprehensive performance and reduce forming process.
Description
Technical field
The present invention relates to a kind of extrusion forming methods of copper piece vacuum temperature adjustment.
Background technology
The control of structure property and dimensional accuracy, it is particularly significant to the manufacture of copper piece.Using large plastometric set and annealing
Process can refine the crystal grain of copper base, but the technological process of this method is longer.Simultaneously in copper piece forming process, deformation
Amount is bigger, and flow stress increase is more notable, and forming difficulty, elastic deformation amount is big, this has structure property, especially dimensional accuracy
Larger impact.
Invention content
The object of the present invention is to provide the extrusion forming methods of a kind of vacuum temperature adjustment.
To achieve the goals above, using following technical scheme：
A kind of extrusion forming method of copper piece vacuum temperature adjustment, it is characterised in that including：Copper base is placed in and squeezes drag intracavitary,
Blank is squeezed under upper mold effect, after upper mold moves to designated displacement, pressurize is carried out to blank, then to upper and lower mould institute
Device space carry out vacuumize process, while to lower die carry out heating and temperature control；After cavity plate reaches assigned temperature, upper mold
Continue to move downward and crimp is carried out again to blank, device space is carried out after the completion of extruding to be forced into atmospheric pressure, then
Upper mold backhaul and feeding.
The initial temperature of copper base is -150 DEG C~20 DEG C.
Vacuum degree -0.095MPa~- the 0.09MPa in device space.
Cavity plate temperature is higher than blank initial temperature, and cavity plate temperature is 20 DEG C~300 DEG C.
The present invention couples blank initial temperature field with the temperature field in deformation process, improves dislocation density and plastic deformation
Ability reduces flexible deformation, prevents from aoxidizing, good recrystallization driving force and uniform Deformation structure are provided for the manufacture of copper piece
Prepare, be conducive to improve Tapered Cup comprehensive performance, improve forming accuracy and reduces forming process.
Figure of description
Fig. 1 copper bores the mold for extruding and forming schematic device of part vacuum temperature adjustment；
The mold for extruding and forming schematic device of Fig. 2 copper arc part vacuum temperature adjustments.
Wherein, 1- cope plates, 2- is with heat-insulated upper padding plate, 3- upper mould fixed plates, 4- punch-pin, vacuum of the 5- with sealing device
Space, 6- is with heat-insulated lower die retainer plate, 7- heating elements, 8- cavity plates, 9- blanks, 10- cushion blocks, 11- with heat-insulated lower bolster,
12- lower templates, 13- mandrils, core model under 14-.
Specific implementation mode
Below in conjunction with example, the invention will be further described.
Embodiment 1
Fig. 1 is the mold for extruding and forming schematic device of copper cone part vacuum temperature adjustment.Wherein upper mold is mainly by cope plate 1, with heat-insulated
Upper padding plate 2, upper mould fixed plate 3, punch-pin 4 form；Lower die is mainly by with heat-insulated lower die retainer plate 6, heating element 7, cavity plate
8, cushion block 10, with heat-insulated lower bolster 11, lower template 12, mandril 13 form.
Copper bore extrusion maximum outside diameter size be Φ 86.1mm, wall thickness 13mm（Such as the blank after being squeezed in Fig. 1）If
A diameter of Φ 47.8mm of copper base of meter, highly it is 77.2mm（Such as the blank before being squeezed in Fig. 1）.Copper base is cooled down by liquid nitrogen
To -100 DEG C；Then blank is placed in concave die cavity, cavity plate temperature is 20 DEG C；Then upper mold, which moves downward, squeezes blank
Pressure, upper mold movement velocity is 5mm/s, after upper mold moves downward 25.4mm, upper mold pressurize；Then to the device where upper and lower mould
Space carries out vacuumize process, and vacuum degree is -0.092MPa, while being heated to cavity plate by heating element, when cavity plate temperature
When degree reaches 200 DEG C, cavity plate is kept the temperature；Then upper mold continues to move downward and squeeze blank, upper mold movement velocity
It squeezes and completes after upper mold moves 5mm again downwards for 1mm/s.Device space is carried out after the completion of extruding to be forced into atmospheric pressure
Power, then upper mold backhaul and feeding.
In the case, copper base is subjected to low-temperature treatment first, is conducive to increase in extrusion process used for forming and be stored up inside blank
Can, while using the temperature-rise effect of cavity plate and increasing extrusion deformation degree, promote the quiet dynamic recovery of blank, improves flow stress, this
Sample is conducive to further increase the wall thickness deformation amount of Tapered Cup, to improve Tapered Cup comprehensive performance, reduces forming process.
Embodiment 2
Fig. 2 is the mold for extruding and forming schematic device of copper arc part vacuum temperature adjustment.Wherein upper mold is mainly by cope plate 1, with heat-insulated
Upper padding plate 2, upper mould fixed plate 3, punch-pin 4 form；Lower die is mainly by with heat-insulated lower die retainer plate 6, heating element 7, cavity plate
8, cushion block 10, with heat-insulated lower bolster 11, lower template 12, mandril 13, lower core model 14 form.
The wall thickness of copper arc extrusion is 7mm（Such as the blank after being squeezed in Fig. 2）, the copper base thickest of design is 11.6mm
（Such as the blank before being squeezed in Fig. 2）.Copper base initial temperature is 20 DEG C, is then placed in blank in the locating mould cavity of lower core model, under
The temperature of core model and cavity plate is 20 DEG C；Then upper mold, which moves downward, squeezes blank, and upper mold movement velocity is 1mm/s, when
After upper mold moves downward 3mm, upper mold pressurize；Then to where upper and lower mould device space carry out vacuumize process, vacuum degree be-
0.092MPa, while cavity plate is heated by heating element, when cavity plate temperature reaches 150 DEG C, cavity plate is kept the temperature；
Then upper mold continues to move downward and squeeze blank, and upper mold movement velocity is 0.5mm/s, when upper mold moves downwards again
Then pressurize 120 seconds after 1.6mm carry out device space being forced into atmospheric pressure, then upper mold backhaul and feeding.In the case
Using the temperature-rise effect of cavity plate, promote the quiet dynamic recovery of blank, reduce flexible deformation, ensures the forming accuracy of interior outer arcuate.
Claims (4)
1. a kind of extrusion forming method of copper piece vacuum temperature adjustment, including extrusion molding step, it is characterised in that carried out to copper base
It squeezes and after pressurize, vacuumize process is carried out to the device space where upper and lower mould, while heating and temperature control are carried out to lower die；When
After cavity plate reaches assigned temperature, upper mold continues to move downward carries out crimp again to blank, to device space after the completion of extruding
It carries out being forced into atmospheric pressure.
2. the extrusion forming method of copper piece vacuum temperature adjustment as described in claim 1, it is characterised in that：The initial temperature of copper base
It is -150 DEG C~20 DEG C.
3. the extrusion forming method of copper piece vacuum temperature adjustment as described in claim 1, it is characterised in that：The vacuum in device space
Degree -0.095MPa~-0.09MPa.
4. the extrusion forming method of copper piece vacuum temperature adjustment as described in claim 1, it is characterised in that：Cavity plate temperature is higher than blank
Initial temperature, cavity plate temperature are 20 DEG C~300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810357657.1A CN108311549A (en) | 2018-04-20 | 2018-04-20 | A kind of extrusion forming method of copper piece vacuum temperature adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810357657.1A CN108311549A (en) | 2018-04-20 | 2018-04-20 | A kind of extrusion forming method of copper piece vacuum temperature adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108311549A true CN108311549A (en) | 2018-07-24 |
Family
ID=62894504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810357657.1A Pending CN108311549A (en) | 2018-04-20 | 2018-04-20 | A kind of extrusion forming method of copper piece vacuum temperature adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108311549A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112264473A (en) * | 2020-08-24 | 2021-01-26 | 中国工程物理研究院材料研究所 | Device and method for preparing high-chemical-activity metal fine-grain and ultra-fine-grain materials |
| CN112296111A (en) * | 2020-10-10 | 2021-02-02 | 中国兵器工业第五九研究所 | Plastic forming method of large-scale complex special-shaped structural part |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3285628B2 (en) * | 1991-12-16 | 2002-05-27 | テチント・コンパニーア・テクニカ・インテルナツィオナーレ・ソシエタ・ペル・アチオニ | Extrusion press assembly |
| CN101670385A (en) * | 2009-08-31 | 2010-03-17 | 哈尔滨工业大学 | Pulse current assisted extrusion forming device and extrusion forming method |
| CN204108008U (en) * | 2014-08-27 | 2015-01-21 | 山东科技大学 | By the multidirectional extruding of amorphous alloy, coated device is carried out to wire rod |
| CN104889186A (en) * | 2015-06-18 | 2015-09-09 | 燕山大学 | Electrical field assisted forward and backward combined extrusion forming method for ZrTiAlV alloy |
| CN106424178A (en) * | 2016-10-12 | 2017-02-22 | 燕山大学 | Discharging multi-directional extrusion moulding method for parts of complex shapes |
-
2018
- 2018-04-20 CN CN201810357657.1A patent/CN108311549A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3285628B2 (en) * | 1991-12-16 | 2002-05-27 | テチント・コンパニーア・テクニカ・インテルナツィオナーレ・ソシエタ・ペル・アチオニ | Extrusion press assembly |
| CN101670385A (en) * | 2009-08-31 | 2010-03-17 | 哈尔滨工业大学 | Pulse current assisted extrusion forming device and extrusion forming method |
| CN204108008U (en) * | 2014-08-27 | 2015-01-21 | 山东科技大学 | By the multidirectional extruding of amorphous alloy, coated device is carried out to wire rod |
| CN104889186A (en) * | 2015-06-18 | 2015-09-09 | 燕山大学 | Electrical field assisted forward and backward combined extrusion forming method for ZrTiAlV alloy |
| CN106424178A (en) * | 2016-10-12 | 2017-02-22 | 燕山大学 | Discharging multi-directional extrusion moulding method for parts of complex shapes |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112264473A (en) * | 2020-08-24 | 2021-01-26 | 中国工程物理研究院材料研究所 | Device and method for preparing high-chemical-activity metal fine-grain and ultra-fine-grain materials |
| CN112296111A (en) * | 2020-10-10 | 2021-02-02 | 中国兵器工业第五九研究所 | Plastic forming method of large-scale complex special-shaped structural part |
| CN112296111B (en) * | 2020-10-10 | 2022-07-22 | 中国兵器工业第五九研究所 | Plastic forming method of large-scale complex special-shaped structural part |
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Application publication date: 20180724 |