CN1112483A - Lateral extruding method long belt continuous uniform pressing technology and its apparatus - Google Patents
Lateral extruding method long belt continuous uniform pressing technology and its apparatus Download PDFInfo
- Publication number
- CN1112483A CN1112483A CN94110083A CN94110083A CN1112483A CN 1112483 A CN1112483 A CN 1112483A CN 94110083 A CN94110083 A CN 94110083A CN 94110083 A CN94110083 A CN 94110083A CN 1112483 A CN1112483 A CN 1112483A
- Authority
- CN
- China
- Prior art keywords
- frustum
- band
- continuous uniform
- pressing technology
- uniform pressing
- 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.)
- Granted
Links
- 238000005516 engineering process Methods 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 title description 11
- 230000002153 concerted effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 229910052797 bismuth Inorganic materials 0.000 description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 206010049244 Ankyloglossia congenital Diseases 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002887 superconductor Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910015901 Bi-Sr-Ca-Cu-O Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The continuous uniform press technology for strip material is characterized in that the strip to be pressed is wound on a frustum of a cone, which can be inserted in a conic hole, if a normal force is applied to the frustum, the strip is pressed, demoulding is achieved by drawing in the opposite direction, and the pressed metallic strip has improved performance.
Description
The present invention relates to the continuously even pressing process of long band.
Since Japanese scientist H.Maeda in 1987 found Bi-Sr-Ca-Cu-O system high-temperature superconducting material, the various countries scholar also had been devoted to the practical research of superconductor when competitively studying its superconduction mechanism and superconductivity.The topmost practicability target of high temperature superconducting materia is that it is prepared into band or the wire rod with high current carrying capacity, in order to electric energy transmitting, or with being with (line) material to turn to coil, solenoid etc., producing certain electromagnetic field, so it can be used as the magnet the selection of material of hyperconductive cable and liquid nitrogen temperature (77K).And at 10T, the critical current density J of bismuth anchor line (string) material under the 4.2K
cGreater than the J of traditional superconductor NbTi
cValue has also surpassed Nb at 16T
3The J of Sn
cValue.Therefore its application prospect is very optimistic.
In numerous technologies of preparation bismuth frenulum (line) material, the method for " adorning powder in the pipe " has been proved to be and has been optimised process.During soon the superconduction fine powder will be packed silver-colored pipe into,, roll into strip (0.10-0.20mm is thick usually, and 2-3mm is wide) again, carry out sintering processes at last, become superconduction band (line) material through being drawn into fine rule by the road.
1989, Japanese scholar Asano T. reported that at first the single shaft compacting can make the sequin of Bi series superconducting material material (Φ 20)) critical current density J
c(Japanese applicating physical magazine, 1989 27 volumes, the 1652nd page) improves a lot.Afterwards, people such as Yamamda is applied to the single shaft pressing process in the processing of Bi frenulum material again.He carries out single shaft with the short sample of the rolling band that obtains (10-50mm is long), and to suppress its pressure be 100-200Kg/mm
2, the critical current density J of band after finding to suppress
cImprove very greatly, as do not suppress the J of sample
cBe 3000A/cm
2, through reaching 15000A/cm after the compacting for the first time
2, after compacting for the second time, be 23600A/cm
2(Japanese applicating physical magazine, nineteen ninety, the 29th 3 phases of volume, 456-458 page or leaf).The various countries researcher has confirmed repeatedly that compacting can improve Bi frenulum material J subsequently
cConclusion.This shows that pressing technology has play a part important to the performance of band.
But though the pressurization of short carry sample is easy, the single shaft compacting of long band (hundreds of is to several thousand mm) is just very difficult, even made corresponding long mould, band pressurized in the longitudinal direction can be uneven yet.The bismuth that the compacting of segmentation pressing is long 1.5 meters is a superconducting tape, as a result J
cImprove not quite, main cause is suppressed between each section to have " joint ", has influenced the uniformity of length direction.
The object of the present invention is to provide a kind of technology and device thereof that long band wire rod is pressurizeed continuously.
To the effect that of the present invention, the pressing process of long band is undertaken by following step:
(a) will wait to press long band to have on the frustum of certain taper around one;
(b) frustum is inserted with in frustum has the taper hole of identical cone angle; (c) on frustum, apply normal pressure F, its F that effectively makes a concerted effort
1Perpendicular to strip surface, make the band pressurized;
(d) demoulding of oppositely pressurizeing.
The device of realizing above-mentioned technology as shown in Figure 1, mainly form by frustum 1 and base 2 two parts, the cone angle of frustum 1 is between 1-60 °, taper hole 3 is arranged on the base 2, and taper hole 3 angles are identical with frustum 2, and size adapts with frustum 2, the α angle is more fortunately between 4-10 °, α angle and diameter also have certain relation simultaneously, and diameter is big more, and preferred angle can be big more.The present invention is not only applicable to the long band pressing technology of superconductor, is described in detail the present invention below by embodiment.
Accompanying drawing 1 is the schematic diagram of device of lateral extruding method long belt uniform pressing technology
This technology of embodiment 1 usefulness is suppressed thick 0.15mm, and the bismuth of long 1200mm is 2223 phase superconducting tapes, J before the compacting
cBe 2200A/cm
2, J after once suppressing
cReach 9400A/cm
2, after the secondary compacting, reach 14400A/cm
2
Process conditions: 300 tons of pressure, ambient operation kept 10 minutes.
Embodiment 2
Prepare Al with this technology
2O
3Strip (the thick 0.1mm of silver-colored band, Al
2O
3Bed thickness 30 μ m) use 300 tons of lateral compression pressure, α=10 ° make Al
2O
3Density rise to 58% solid density from 52% original solid density; Thereby make Al
2O
3Strip has higher density, and molten going has better toughness and intensity behind the Ag cover.
Embodiment 3
This technology is used for the pressure diffusion welding (DW) of two kinds of different metal strips; 0.05-0.10mm is thick, and 5mm is wide, pressurizes behind long 2 meters the aluminium strip (containing A1＞99.3%) and the oxygen-free copper stripe lap wound of corresponding size;
Technological parameter: the room temperature assembling, be warming up to 400 ℃, 64 tons of pressure kept 20 minutes, and vacuum is 10
-3Holder.
Use conventional pressure diffusion welding (DW) to weld the short band of these two kinds of metals, the tensile strength of institute's survey joint is 10.0Kg/mm
2After using new technology, because band is very thin, so can't survey the tensile strength of its joint, but its joint of scanning electron microscopic observation is to close, the joint micro-quality reaches the level of conventional pressure diffusion welding (DW), has more meaningfully solved the problem that the long band of metal foil for a long time can't carry out pressure diffusion welding (DW).
This technology can realize the continuous uniform compacting of quite long band, compares with the segmented pressing process, and not only the band pressurized is even, and greatly improve compacting efficient, and can satisfy the needs of non junction continuous uniform compacting band, be the technology initiative, its operation principle is simple and clear, and is easy and simple to handle.
Claims (3)
1, a kind of continuous uniform pressing technology of growing the band wire rod, it is characterized in that: pressing step is as follows
A. will wait to press long band to have on the frustum of certain taper around one;
B. frustum is inserted with in frustum has the taper hole of identical cone angle;
C. on frustum, apply normal pressure F, its F that effectively makes a concerted effort
1Perpendicular to strip surface, make the band pressurized;
D. the demoulding of oppositely pressurizeing.
2, a kind of device of realizing pressing technology shown in the claim 1, it is characterized in that: device mainly is made up of frustum (1) and base (2) two parts, the cone angle of frustum (1) is between 1 °-60 °, taper hole (3) is arranged on the base (2), taper hole (3) angle is identical with frustum (1), and size adapts with frustum (1).
3, by the described device of claim 2, it is characterized in that: α is more fortunately between 4-10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110083A CN1066354C (en) | 1993-02-27 | 1994-02-26 | Lateral extruding method long belt continuous uniform pressing technology and its apparatus |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110128.X | 1993-02-27 | ||
| CN 93110128 CN1091358A (en) | 1993-02-27 | 1993-02-27 | Continuous and uniform pressurizing on long strip with side extrusion method and device thereof |
| CN94110083A CN1066354C (en) | 1993-02-27 | 1994-02-26 | Lateral extruding method long belt continuous uniform pressing technology and its apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1112483A true CN1112483A (en) | 1995-11-29 |
| CN1066354C CN1066354C (en) | 2001-05-30 |
Family
ID=25743063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94110083A Expired - Fee Related CN1066354C (en) | 1993-02-27 | 1994-02-26 | Lateral extruding method long belt continuous uniform pressing technology and its apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1066354C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500632A (en) * | 2011-09-30 | 2012-06-20 | 南京理工大学 | Method for realizing high-pressure shearing of pipes according to wedge principle and device utilizing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104876B (en) * | 1985-06-26 | 1987-03-18 | 株式会社神户制钢所 | Indirect extrusion process |
| SU1454729A1 (en) * | 1987-07-27 | 1989-01-30 | Предприятие П/Я В-2190 | Thermoelastic press |
| IT1211380B (en) * | 1987-10-01 | 1989-10-18 | Lmi Spa | PROCEDURE FOR THE CONSTRUCTION OF A SEMI-FINISHED TUBULAR SHAPE IN COPPER ALLOY SUITABLE TO CREATE A LINGOTTEER FOR STEEL CONTINUOUS CASTING |
| CN2050353U (en) * | 1989-04-14 | 1990-01-03 | 陈忠明 | Thermal constant temp. compression dies for flat materials |
| CN1068214A (en) * | 1991-06-26 | 1993-01-20 | 北京航空航天大学 | The preparation bismuth is the new method (molten-salt reaction method) of superconducting oxide crystal |
-
1994
- 1994-02-26 CN CN94110083A patent/CN1066354C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500632A (en) * | 2011-09-30 | 2012-06-20 | 南京理工大学 | Method for realizing high-pressure shearing of pipes according to wedge principle and device utilizing method |
| WO2013044599A1 (en) * | 2011-09-30 | 2013-04-04 | 南京理工大学 | Method for achieving high-pressure shearing deformation in tube materials by wedge principle and apparatus therefor |
| CN102500632B (en) * | 2011-09-30 | 2014-11-05 | 南京理工大学 | Method for realizing high-pressure shearing of pipes according to wedge principle and device utilizing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1066354C (en) | 2001-05-30 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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