CN1031807A - The crystallizer of used in up-pulling method for continuously casting metallic pipe and technology - Google Patents
The crystallizer of used in up-pulling method for continuously casting metallic pipe and technology Download PDFInfo
- Publication number
- CN1031807A CN1031807A CN 87106200 CN87106200A CN1031807A CN 1031807 A CN1031807 A CN 1031807A CN 87106200 CN87106200 CN 87106200 CN 87106200 A CN87106200 A CN 87106200A CN 1031807 A CN1031807 A CN 1031807A
- Authority
- CN
- China
- Prior art keywords
- crystallizer
- graphite
- hole
- copper
- casting
- 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.)
- Pending
Links
Images
Landscapes
- Continuous Casting (AREA)
Abstract
A kind of relating to, drawn the method that casting is produced the crystallizer and the production copper pipe of metal tube.Crystallizer has a graphite mo(u)ld, is made up of die body, core rod, and the cross section in space between the two is identical with the cross section of the pipe of desiring to draw casting, and has one group of hole that the space is communicated with the external world.This crystallizer is immersed in the copper liquid of fusing, with vacuumizing or the liquid level difference method makes copper liquid enter crystallizer, and use water quench, with drawing bar continuous casting copper pipes is drawn again.Use this crystallizer and method, can draw the ingot metal pipe infinitely longways, also can draw the casting shape tube, draw the copper pipe non-scale of casting, have high conductance.
Description
The present invention relates to continuous casting of metal, i.e. the equipment and the technology of the casting do not limit of product length relate more particularly to use and draw equipment and the technology that the method for casting out is produced metal tube continuously.
Up-drawing method is produced the metal pole stock continuously, the current production of copper bar that is mainly used at home, be a kind ofly to develop in recent years than advanced production method faster, its advantage is that investment is little, floor space is few, die exchange is simple, produce flexibly, this method is adopted by cable factory and Copper Material Factory widely, but this at home method is not used to produce tubing.
Prior art is produced the method for metal seamless tubing, and the method for for example producing copper pipe generally with copper ingot extruding perforation, is made pipe, then through repeatedly being drawn into product, and this processing method, raw material are also wasted in time-consuming power consumption.
Chinese patent application numbers 85103853 has proposed a kind of method, equipment of continuous metal tube casting, proposition have at least one extension on transfer to become the drop-down liquid metal of situation in the magnetic suspension field of force and an auxiliary Electromagnetic Control field of force, tubulose liquid metal product after solidifying is pulled out from the top in magnetic field, and cooling also further is processed into desired end product.But this method needs complex apparatus and technology, for general medium-sized and small enterprises can not be born.
The objective of the invention is to design a kind of crystallizer of energy continuous casting of metals pipe.
A further object of the present invention is the crystallizer of a kind of energy of design continuous casting copper pipes.
A further object of the present invention is the crystallizer that a kind of energy of design continuous casting has the metal tube of various cross sectional shapes.
A further object of the present invention is to propose a kind of process of using above-mentioned crystallizer to produce copper pipe.
The present invention realizes by such design.
One metal tube crystallizer, comprise that one has cooling jacket and the crystallization parts interface that can communicate with vacuum source, described crystallization parts are made up of the conductor that conducts heat, combine closely graphite mo(u)ld and described crystallization part detachable, described graphite mo(u)ld has a cavity, one of cavity communicates with crystallizer in the crystallizer, the other end becomes enclosed construction, blind end stretches out in the chamber between a core rod and the chamber wall and forms the space, the cross sectional shape in described space is identical with the cross section of the metal tube of desiring continuous casting, have one group of hole that described space is communicated with the external world on the wall of graphite cavity near blind end, described graphite mo(u)ld and crystallizer are outer can also to be coated with jacket.
A kind of continuous metal cast process of copper pipe, with electric furnace with copper fusing and be heated to 1140 ℃-1160 ℃, at the topped air isolation layer in copper liquid surface, above-mentioned crystallizer is inserted in the copper liquid of fusing, in crystallizer, vacuumize or utilize copper liquid level official post copper liquid in crystallizer, to rise, continuously copper pipe is drawn by draw-gear after bar is drawn hollow copper tubing with drawing, the flow of regulating jacket water makes the temperature of the copper pipe of drawing between 80 ℃-150 ℃ again.
Advantage of the present invention is tangible.Adopt apparatus and method of the present invention directly seamless hollow copper tubing of continuous casting and various seamless metal heterotype tubing from molten metal, its length can infinitely prolong as required, removed from the past traditional like this with ingot heating, perforation, again by drawing die drawing repeatedly, middle very complicated technology such as also will anneal has been saved a large amount of energy and metal material.So just reduce the cost of metal pipe material very significantly, its economic worth is very valuable.The equipment of equipment of the present invention and prior art is compared, and is fairly simple, can utilize the crystallizer of original continuous casting copper bar, mixes graphite mo(u)ld of the present invention, helps small investment, goes up detective, and the transformation of used equipment is upgraded.The copper pipe surface of using the present invention to produce is highly polished, and is non-oxidation layer copper pipe, and product conductance height more is applicable to electric product than the copper pipe of drawing.The product that adopts equipment of the present invention and explained hereafter through initial estimate is than reducing production costs about about 25% with traditional apparatus and process production.
Fig. 1 is a metal tube structure of mould view of the present invention, and the part has been done to dissect.
Fig. 2 is the structure cutaway view of the graphite mo(u)ld of metal tube crystallizer shown in Figure 1.
Fig. 3 is that graphite mo(u)ld shown in Figure 2 is along A-A line side cross sectional view.
Fig. 4 is the cutaway view that graphite mo(u)ld shown in Figure 2 has the variation of spiral marking connection structure.
Fig. 5 is the structure cutaway view of the another variation of graphite mo(u)ld of metallic crystal device shown in Figure 1.
Fig. 6 is a graphite mo(u)ld shown in Figure 5, along B-B line side cross sectional view.
Fig. 7 is the structure cutaway view of the another variation of graphite mo(u)ld of metallic crystal device shown in Figure 1.
Fig. 8 is that graphite mo(u)ld shown in Figure 7 is along C-C line side cross sectional view.
Fig. 9 is the flow sheet that up-drawing method of the present invention is produced copper pipe.
Be described in detail several embodiments of the present invention referring now to accompanying drawing, will help the understanding of the present invention by narration, but not limit the scope of the invention.
As shown in Figure 1, metal tube crystallizer of the present invention has crystallization parts [4], and it has cylindrical shell [5], and the crystallizer [6] at a strip center is arranged in the cylindrical shell, and its endoporus section shape is identical with the peripheral shape in the cross section of the metal tube of desiring continuous casting.Form water jacket between cylindrical shell [5] and the crystallizer [6].Sealing between one of cylindrical shell [5] and the crystallizer [6], the other end of cylindrical shell [5] forms the shoulder [10] with helicitic texture.Mould bearing [11] thread connection with female thread structure is on the external screw thread convex shoulder [10] of cylindrical shell [5], and the endoporus of mould bearing [11] just in time closely is enclosed within on the end of crystallizer [6].Have cooling water cavity [13] in mould bearing [11] body, this chamber [13] and cylindrical shell [5] are connected with water jacket between the crystallizer [6].Mould bearing [11] has internal taper hole structure [14] or internal thread hole structure [18] (Fig. 1 left side expression inner bolt hole structure [18], internal taper hole structure [14] is represented on the right side).Spacer ring [7] cooling water cavity [13] in water sleeve mould bearing [11] body between cylindrical shell [5] and crystallizer [6] is separated or in water jacket [8] and outer water jacket [9], this two water jacket communicates in the bottom of cooling water cavity [13].In water jacket [8] communicate with cooling water inlet [3], outer water jacket [9] communicates with coolant outlet [2], vacuum source interface [1] communicates with crystallizer [6].Graphite mo(u)ld [12] with Outer Taper structure or external thread structure is closely put in the internal taper hole structure [14] or inner bolt hole structure [18] of mould bearing [11].The collet of being made up of high aluminum fiber [17] and carbon fibre [16] [15] is enclosed within the outside of mould bearing [11].
Graphite mo(u)ld has mould-pipe body [22] shown in Fig. 2,3, and the upper end of die body [22] has cone structure [20], and the tapering of the internal taper hole [14] of the isotype bearing of its tapering [11] is identical, can be 4 °-8 °, and requires to have very high fineness.Die body [22] has elongated endoporus [21], and the diameter of endoporus is identical with the external diameter of the metal tube of desiring continuous casting, and has high fineness, can be
8～
12.One end of elongated endoporus [21] has internal taper hole [25] structure, has interior cylinder locating hole [24] to join with it on the internal taper hole [25] again.Described internal taper hole [25] and interior cylinder locating hole [24] and elongated hole [21] keep strict concentricity.On the die body wall of interior cylinder locating hole [24] top, have the radial direction through hole [23] of one group of circumference five equilibrium, the center line of each through hole [23] is by the axis of elongated hole [21] and on same plane perpendicular to axis.Described through hole [23] can be that circular hole also can be hole such as elliptical aperture, the square hole etc. of other shape, and described hole [23] have 6, also can be 4 or other quantity.One end of core rod [29] has the frustum of a cone [26] structure, and the tapering of the frustum of a cone [26] is identical with the tapering of internal taper hole [25]; The frustum of a cone [26] stretches upwards and forms positioning cylinder [27], and its diameter is identical with the diameter of interior cylinder locating hole [24]; Positioning cylinder [24] stretches upwards again, forms core rod [28], and it be a cylindrical section near a section of positioning cylinder, and its diameter equals to desire the internal diameter of continuous casting of metals pipe, and another section is the cone that has little tapering; The described frustum of a cone [26], positioning cylinder [27], core rod [28] keep with one heart strict.Core rod [29] is enclosed in the elongated hole [21] of die body [22], and its frustum of a cone [26] and positioning cylinder [27] are combined closely with internal taper hole [25], the interior cylinder locating hole [24] of die body [22].Because of the assurance of above-mentioned form and position tolerance precision, make the axis of core rod [28] and the dead in line of elongated hole [21].Each part of above-mentioned graphite mo(u)ld all adopts the graphite manufacturing of high thermal conductivity coefficient.The mating surface of each part and all should be processed into and have mirror-like light knot degree with the strand contact area.
As shown in Figure 4, as a kind of variation of the graphite mo(u)ld shown in Fig. 2,3, its cone structure [20] can be changed into external thread structure [30].This external screw thread should can closely match with the internal thread of the female thread structure [18] of mould bearing [11], and has very high precision and fineness, preferably grinds through screw grinder.
Graphite mo(u)ld shown in Fig. 5,6, its basic structure are identical with the graphite mo(u)ld shown in Fig. 2,3.The cross section of elongated hole [31] in the die body that only is it that do not exist together be foursquare, so just the energy continuous casting go out square hollow tube.As a kind of variation of graphite mo(u)ld shown in Fig. 5,6, its pyramidal structure also can become external thread structure because of narrating Fig. 2, explaining in detail at 3 o'clock, has no longer repeated here.
Graphite mo(u)ld shown in Fig. 7,8 is the another variation of graphite mo(u)ld shown in Fig. 2,3, and its basic structure is identical.Not exist together be that the cross section of elongated hole [32] of die body [33] is that at slot one shown in Figure 8 also links a semicircle orifice is arranged, become irregularly-shaped hole.The lower end of die body [33] has internal thread hole [35], and there is the through hole [34] of one group of circumference uniform distribution its top, and quantity can be 6,4 or other number.Having externally threaded end cap [36] closely is screwed in the above-mentioned inner bolt hole [35].Have a shoulder hole [37] that has an internal thread again at the eccentric position of end cap [36], an end have the external screw thread other end slightly the core rod [38] of tool tapering closely be screwed into stretching, extension to elongated hole [32] in the internal thread of shoulder hole [37].The cylinder of core rod [38] axis partly is just in time with the dead in line partly of special-shaped elongated hole [32] semicircle.All mating surfaces reach the fineness that all should have mirror-like with the contact-making surface of strand.
The also available helicitic texture of its cone structure of a kind of variation as graphite mo(u)ld shown in Fig. 7,8 substitutes.
Above-described any one graphite mo(u)ld when adopting thread connection, is increased thermal conductivity, also can use behind the sintering can increased thermal conductivity ointment be coated in the connection place.
As shown in Figure 9, for using metal tube crystallizer of the present invention to produce the process chart of hollow copper tubing.
The cathode copper surface is cleaned with water and dried, cut into fritter and add the melting furnace fusing, this method is used line frequency furnace.Then, the air isolation layer that adds charcoal or graphite phosphorus sheet.Charcoal must keep clean, and uses the charcoal by hardwood system, and standard water-content is less than 7%.The phosphorus content hand 99.5～99.8% of graphite phosphorus sheet is of a size of 0.7～1.2mm, is thin and light Powdered.Copper liquid after the fusing flows into holding furnace through chute, and this method also uses line frequency furnace to make holding furnace.Copper liquid is best cast tube temperature 1140 ℃ to 1160 ℃ humidity province, the copper pipe satisfactory mechanical property that casts out, the mechanical performance of cast tube degenerates this humidity province outside, thus in holding furnace the temperature of maintenance copper liquid at 1145 ℃ ± 5 ℃.Copper liquid surface also uses charcoal or graphite flake layer to make the air isolation layer, and the performance requirement of charcoal and graphite phosphorus sheet is with above-mentioned identical.After crystallizer inserted copper liquid certain depth, vacuumize the negative pressure of formation 80～100mm Hg in the crystallizer that makes crystallizer and make copper liquid suck the crystallizer of crystallizer by the graphite nib, perhaps will there be the crystallizer of collet to insert the darker degree of depth of copper liquid, and copper liquid be entered in the crystallizer by the graphite nib under the pressure of liquid level difference manage.To draw bar and insert crystallizer, when the copper liquid in drawing boom end and entering crystallizer contacts,, and make local-crystalized owing to scattering and disappearing of heat.To draw that bar upwards promotes and the copper pipe that will cast is constantly drawn with traction wheel.Meanwhile, constantly passing to cooling water in the water jacket of crystallizer cools off.Cooling water should adopt demineralized water, influences cooling effect to prevent to generate incrustation scale.The Flow-rate adjustment of cooling water in the temperature that makes the hollow copper tubing of drawing between 80 °～150 ℃.
Every technological parameter is as follows
1120 °～1180 ℃ of holding furnace furnace temperature
Vacuum 50～100Hgmm
Cooling water hydraulic pressure 3～6Kg/mm
8 °～15 ℃ of turnover cooling ranges
20 °～45 ℃ of inflow temperatures
Lead speed 700～1000mm/min
On draw pitch 3～7mm
Crystallizer immerses the copper liquid degree of depth 20～45mm
The topped thickness 50～100mm of graphite phosphorus sheet
The topped thickness 50～100mm of charcoal
Claims (16)
1, a kind of relating to, draw casting and produce the crystallizer of metal tube continuously and have the crystallization parts that have cooling jacket and vacuum interface, combine closely with it is characterized in that also having a graphite mo(u)ld and described crystallization part detachable, described graphite mo(u)ld has the die body of a band cavity, one of this cavity communicates with crystallizer in the crystallizer, the core rod that stretches is equipped with in the other end in the chamber, form the space between it and the chamber wall, the cross sectional shape in described space is identical with the cross section of the metal tube of desiring continuous casting, has one group of hole that described space is communicated with the external world on the wall of graphite cavity near blind end.
2, crystallizer as claimed in claim 1, it is characterized in that the described core rod that stretches [29] is by the frustum of a cone [26] in the chamber, positioning cylinder [27], core rod [28] are formed, one of described die body has internal taper hole [25], interior cylinder locating hole [24] and hole [23], and the other end becomes cone structure [20].
3, crystallizer as claimed in claim 2 is characterized in that the available external thread structure of described cone structure [20] [20] substitutes.
4,, it is characterized in that described hole [23] is 6 as claim 2 or 3 described crystallizers.
5, as claim 2 or 3 described crystallizers, the cross section that it is characterized in that the chamber of described die body [22] is circular or square.
6, crystallizer as claimed in claim 1, it is characterized in that the described core rod that stretches is by the end cap with external screw thread and shoulder hole [37] [36] in the chamber, the core rod [38] that is contained in the shoulder hole [37] is formed, described die body [33] one ends have cone structure, another one has female thread structure, the cross section rectangularity in its chamber adds semi-circular hole, and described end cap [36] is screwed in the internal thread of described die body [33], the axis of core rod [38] and the dead in line of semi-circular hole.
7, crystallizer as claimed in claim 6 is characterized in that described cone structure can substitute with helicitic texture.
8,, it is characterized in that described through hole [34] is 6 as claim 6 or 7 described crystallizers.
9, as claim 2 or 6 described crystallizers, the epimere that it is characterized in that described core rod [29] [38] is tapering slightly.
10, crystallizer as claimed in claim 1 is characterized in that described graphite mo(u)ld made by the graphite of high thermal conductivity coefficient, its mating surface and touch mask with the casting embryonic breeding mirror finish is arranged.
11,, it is characterized in that described graphite mo(u)ld also is with the collet of being made by high aluminum fiber and carbon fiber [15] outward as claim 1 or 2 or 3 or 6 or 7 or 10 described crystallizers.
12, a kind of relating to, drawn the method that casting is produced copper pipe continuously, the copper material is melted in electric furnace and be incubated, surface coverage is with charcoal or graphite phosphorus sheet air isolation layer, crystallizer is inserted copper liquid, use the water quench crystallizer, make copper liquid enter crystallizer, continuous casting copper pipes is drawn with drawing bar with vacuumizing method or liquid level difference method, it is characterized in that described copper liquid temperature remains on 1140 ℃ to 1160 ℃, finally remain on 1145 ℃ ± 5 ℃.
13, method as claimed in claim 12, the flow-control that it is characterized in that cooling fluid in the temperature that makes the continuous casting copper pipes of pulling out between 60 ° to 120 ℃.
14, method as claimed in claim 12 is characterized in that vacuum that described vacuumizing method aspirates is 80 to 100mmHg in crystallizer.
15, method as claimed in claim 12, the topped thickness that it is characterized in that described charcoal or graphite phosphorus sheet air isolation layer is 50mm-10mm, and charcoal is made by hardwood, and water content is less than 7%, graphite phosphorus sheet phosphorus content is 99.5% to 99.8%, is of a size of 0.7mm to 1.2mm.
16, method as claimed in claim 12 is characterized in that described cooling water is a soft water, and the hydraulic pressure of cooling water is 3 to 6Kg/mm
2, the temperature difference of turnover cooling water is 8 ℃～15 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87106200 CN1031807A (en) | 1987-09-05 | 1987-09-05 | The crystallizer of used in up-pulling method for continuously casting metallic pipe and technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87106200 CN1031807A (en) | 1987-09-05 | 1987-09-05 | The crystallizer of used in up-pulling method for continuously casting metallic pipe and technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1031807A true CN1031807A (en) | 1989-03-22 |
Family
ID=4815617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87106200 Pending CN1031807A (en) | 1987-09-05 | 1987-09-05 | The crystallizer of used in up-pulling method for continuously casting metallic pipe and technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031807A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168180A (en) * | 2011-04-11 | 2011-08-31 | 中天合金技术有限公司 | Upcast method for producing high-purity bright copper rod |
| CN102581061A (en) * | 2012-03-09 | 2012-07-18 | 泉州中宇卫浴科技实业有限公司 | Production method for seamless brass pipe |
| CN103722350A (en) * | 2014-01-14 | 2014-04-16 | 东又悦（苏州）电子科技新材料有限公司 | Electroplating hollow phosphor copper ball and preparation method thereof |
| CN105149531A (en) * | 2015-09-29 | 2015-12-16 | 北京科技大学 | Device and technical method for preparing metal-wrapped long carbon fiber wrapping material |
| CN105813780A (en) * | 2013-12-18 | 2016-07-27 | 丰田自动车株式会社 | Up-drawing continuous casting method, up-drawing continuous casting apparatus, and continuous casting |
| CN107538186A (en) * | 2017-09-26 | 2018-01-05 | 中天合金技术有限公司 | A kind of production technology of up-drawing method thin-walled light copper pipe |
| CN107900290A (en) * | 2017-11-15 | 2018-04-13 | 贵溪博远金属有限公司 | A kind of mould for manufacturing copper pipe or copper palladium-silver bonding line |
| CN113399634A (en) * | 2021-05-24 | 2021-09-17 | 佛山市三水凤铝铝业有限公司 | Aluminum alloy circular tube casting crystallization equipment and method thereof |
-
1987
- 1987-09-05 CN CN 87106200 patent/CN1031807A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168180A (en) * | 2011-04-11 | 2011-08-31 | 中天合金技术有限公司 | Upcast method for producing high-purity bright copper rod |
| CN102168180B (en) * | 2011-04-11 | 2013-05-08 | 中天合金技术有限公司 | Upcast method for producing high-purity bright copper rod |
| CN102581061A (en) * | 2012-03-09 | 2012-07-18 | 泉州中宇卫浴科技实业有限公司 | Production method for seamless brass pipe |
| CN102581061B (en) * | 2012-03-09 | 2015-04-15 | 泉州中宇卫浴科技实业有限公司 | Production method for seamless brass pipe |
| CN105813780A (en) * | 2013-12-18 | 2016-07-27 | 丰田自动车株式会社 | Up-drawing continuous casting method, up-drawing continuous casting apparatus, and continuous casting |
| CN103722350A (en) * | 2014-01-14 | 2014-04-16 | 东又悦（苏州）电子科技新材料有限公司 | Electroplating hollow phosphor copper ball and preparation method thereof |
| CN103722350B (en) * | 2014-01-14 | 2016-08-10 | 东又悦（苏州）电子科技新材料有限公司 | A kind of plating hollow phosphorous copper balls and preparation method thereof |
| CN105149531A (en) * | 2015-09-29 | 2015-12-16 | 北京科技大学 | Device and technical method for preparing metal-wrapped long carbon fiber wrapping material |
| CN105149531B (en) * | 2015-09-29 | 2017-07-28 | 北京科技大学 | A kind of device and process for preparing metal bag long carbon fiber covering material |
| CN107538186A (en) * | 2017-09-26 | 2018-01-05 | 中天合金技术有限公司 | A kind of production technology of up-drawing method thin-walled light copper pipe |
| CN107900290A (en) * | 2017-11-15 | 2018-04-13 | 贵溪博远金属有限公司 | A kind of mould for manufacturing copper pipe or copper palladium-silver bonding line |
| CN113399634A (en) * | 2021-05-24 | 2021-09-17 | 佛山市三水凤铝铝业有限公司 | Aluminum alloy circular tube casting crystallization equipment and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100496808C (en) | Short flow-path production of copper and copper alloy precise pipe | |
| CN1031807A (en) | The crystallizer of used in up-pulling method for continuously casting metallic pipe and technology | |
| CN104117644B (en) | A kind of metal strand apparatus for continuously production that compression casting is provided and method | |
| CN115872606B (en) | Method for melting quartz tube by utilizing electric arc and quartz tube electric arc melting equipment | |
| CN1156358C (en) | Extruding-out die and technology for forming blank of cored ceramics | |
| CN87213174U (en) | Crystallizer for continuous casting metallic pipe using upward guide method | |
| CN108838350A (en) | A kind of round steel cast dies holder device and its application | |
| CN213223754U (en) | Copper rod continuous casting and rolling mill | |
| CN107299327A (en) | A kind of manufacture method of inexpensive niobium pipe target | |
| CN109957670A (en) | A kind of commutator copper silver tellurium alloy and preparation method thereof | |
| CN100999011A (en) | Short process high efficiency preparation method of high aluminium coppe alloy precision pipe material | |
| CN106269969B (en) | A kind of production technology of electron tube non-oxygen copper bar | |
| CN2880815Y (en) | Large scale quartz glass plate producing apparatus | |
| CN106077125B (en) | A kind of production technology of pole coil copper profile | |
| CN110681711A (en) | Extrusion-ECAP Extrusion deformation device and method for preparing fine-grained material | |
| CN115557677B (en) | Quartz tube manufacturing method and quartz tube | |
| MD855C2 (en) | Process for cast microwire manufacturing | |
| CN216938343U (en) | Combined type guide rod device capable of regulating and controlling orientation of high-purity copper single crystal | |
| CN102489535A (en) | Method for preparing and processing cupronickel capillary with high efficiency | |
| CN206028681U (en) | But draw casting device on grain refinement | |
| CN1255413A (en) | Technology for casting and drawing steel-aluminum compounded electrically conductive wire | |
| CN207207097U (en) | A kind of PVC sizing mill | |
| CN113664181A (en) | Full liquid state extrusion casting conveying pipe | |
| CN202169360U (en) | Graphite crystallizer for improving smoothness of inner wall of horizontal continuous casting blank of copper pipe | |
| CN2237505Y (en) | Crystallizer for downhill continuous casting of square pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination |