CN203610633U - Cored crystallization system for up-drawing continuous casting of copper tubes and copper alloy tubes - Google Patents
Cored crystallization system for up-drawing continuous casting of copper tubes and copper alloy tubes Download PDFInfo
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- CN203610633U CN203610633U CN201320873592.9U CN201320873592U CN203610633U CN 203610633 U CN203610633 U CN 203610633U CN 201320873592 U CN201320873592 U CN 201320873592U CN 203610633 U CN203610633 U CN 203610633U
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Abstract
The utility model relates to a cored crystallization system for the up-drawing continuous casting of copper tubes and copper alloy tubes. According to the cored crystallization system, an annular hollow cavity is formed by an external graphite jacket and an internal graphite core rod; a liquid inlet is formed in the lower part of the graphite jacket, and a pressing plate, a flange and a cooling copper sleeve are sequentially sleeved on the graphite jacket upwardly from the middle part; a refractory protective sleeve is arranged between the pressing plate and the graphite jacket; a cooling water jacket is arranged in the pressing plate, an electromagnetic generating cavity is formed in the cooling water jacket, a plurality of electromagnetic coils are mounted in the electromagnetic generating cavity and are connected with a three-phase power supply, and magnetic yokes made from a magnetism conducting material are mounted at the outer sides of the electromagnetic coils; both the pressing plate and the flange are made from austenitic stainless steel. The cored crystallization system has the advantages that an up-drawing continuous casting method adopts a cored crystallizer, a hollow tube blank can be obtained through directly drawing upwards, and liquid metal can be subjected to flow and heat-mass transfer in the internal cavity of the crystallizer through the electromagnetic stirring effect of the electromagnetic generator, so that crystal grains are refined, solidified tissue is finer, and the quality of cast blanks is improved.
Description
Technical field
The present invention relates to copper-alloy pipe-material production equipment field, be specifically related to a kind of copper pipe and copper alloy tube continuous up-casting belt carcass crystal system.
Background technology
Copper pipe and copper alloy tube are the critical materials of the heat-exchange system in desalinization, thermoelectricity nuclear power and naval vessel.Production of copper compo pipe at present, main method is extrusion, adopts alternate manner to bore a hole as oblique casting, and continuous casting rolls and draws seldom, extrusion process production process is: first batching casting circle base, through sawing, sorting, heating, extruding, pickling, then through rolling, be stretched to production tube, its defect is: (1) production process is numerous and diverse, and auxiliary equipment is many, maintenance die expense is high, floor space is large, and personnel require many, and competency profiling is high; (2) scale of investment is large, more than one hundred million units at least, several hundred million yuan at most; (3) justify base post bake, need extrusion modling, recipient, pin, need the energy consumptions such as preheating high before work; (4) the operation metal losses such as stirring, ingot casting, sawing, heating, pressure are remaining, decortication, pickling are large, and yield rate is low, for base yield rate <90%; (5) adopt single-unit furnace semi-continuous casting or the founding of split stove, continuous production is poor, and efficiency is low; (6) zinc scaling loss is large, stir, and post bake, extruding and the smog such as lubricated are large, seriously polluted; (7) pipe is eccentric large, affects follow-up cold working, and especially the extrusion yield of the large-caliber thin-walled brass tube of forward extrusion is 40%～60%.Generally speaking the technique of China's copper base copper alloy tube falls behind at present, and the quality of product is stable not, yield rate is low and cost is high.Continuous up-casting is a kind of method of continuous casting, its principle is to utilize the principle of molten metal crystallisation by cooling, from the metal of melting or alloy molten solution, slowly extract continuously the effigurate solid metallic wire rod of tool or sheet material out, its advantage is without courses of work such as process extruding, rolling, drawings, production capacity is large continuously, is mainly used at present the production of oxygen-free copper-wire, steel; Crystallisation by cooling system is a key equipment of continuous up-casting, current domestic research adopts the coreless crystallizer adopting in oxygen-free copper-wire production to produce hollow continuous cast base, control pipe wall thickness by the intensity of controlling cooling water, this kind of mode is higher to the stability requirement of working condition, the quality of product is not easy to control, and in cooling procedure, molten metal is heated inhomogeneous, near a side cooling velocity of water jacket fast and away from a cooling velocity slow, cause pipe appearance to have crackle, solidified inside to organize thick defect.
Summary of the invention
Object of the present invention is exactly the defect existing for prior art, and a kind of copper pipe and copper alloy tube continuous up-casting belt carcass crystal system are provided.
The concrete technical scheme of the present invention is: comprise outside graphite overcoat and inner graphite centre rod, and graphite overcoat and graphite centre rod form annular inner chamber; The bottom of graphite overcoat is provided with inlet, and graphite overcoat middle part is up set with pressing plate, flange and cooling copper sheathing successively; Between described pressing plate and graphite overcoat, be provided with the refractory material protective sleeve that 15-20mm is thick; In described pressing plate, be provided with cooling jacket, be provided with electromagnetism generation cavity in cooling jacket, multiple solenoids are installed in electromagnetism generation cavity, solenoid is connected with three phase mains, and the yoke that permeability magnetic material is made is equipped with in the outside of solenoid; Described pressing plate and flange are austenitic stainless steel; The power frequency of described three phase mains is 50Hz, and current strength is 80-90A; Described graphite centre rod is that tapering is the round platform of 1.2-1.4.
Such scheme can further be improved to:
In described cooling copper sheathing, be provided with spaced apart deflection plate.
Described refractory material protective sleeve is silicon carbide brick, corundum brick protective sleeve or fire clay cover.
The inner surface of described graphite overcoat and the roughness of graphite centre rod outer surface are below 0.5.
Described cooling jacket is stainless steel cooling jacket.
In described electromagnetism generation cavity, be provided with the poly-magnet frame of annular.
Described austenitic stainless steel is preferably 1Cr17Mn6Ni15N, 0Cr18Ni10Ti or 1Cr18Ni12Mo3Ti.
Compared with prior art, upward-casting process in the present invention adopts core crystallizer, directly upwards traction just can obtain hollow bloom, improve the uniformity of the thickness of pipe, and by the effect of electromagnetic generator, by electromagnetic agitation effect, make metal liquid in crystallizer internal cavity, can occur to flow and heat and mass, thereby reach crystal grain thinning and make solidified structure thinner, improve the quality of strand.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention;
In figure: 1, inlet, 2, graphite overcoat, 3, pressing plate, 4, deflection plate, 5, cooling copper sheathing; 6, hollow bloom, 7, graphite centre rod, 8, flange, 9, yoke, 10, solenoid; 11, refractory material protective sleeve, 12, inner chamber, 14, stainless steel cooling jacket, 15, electromagnetism generation cavity.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
Referring to Fig. 1, a kind of copper pipe and copper alloy tube continuous up-casting belt carcass crystal system, comprise outside graphite overcoat 2 and inner graphite centre rod 7, and graphite overcoat 2 and graphite centre rod 7 form annular inner chamber 12; The bottom of graphite overcoat 2 is provided with inlet 1, and graphite overcoat 2 middle parts are up set with pressing plate 3, flange 8 and cooling copper sheathing 5 successively, is provided with spaced apart deflection plate 4 in cooling copper sheathing; Between pressing plate 3 and graphite overcoat 2, be provided with the refractory material protective sleeve 11 that 15-20mm is thick, refractory material protective sleeve is preferably silicon carbide brick, corundum brick protective sleeve or fire clay cover; In pressing plate 3, be provided with stainless steel cooling jacket 14, in stainless steel cooling jacket 14, be provided with electromagnetism generation cavity 15, the multiple solenoids 10 of the interior installation of electromagnetism generation cavity 15, solenoid 10 is connected with power supply, the yoke 9 that permeability magnetic material is made is equipped with in the outside of solenoid 10, and yoke can be made of pure iron; Pressing plate 3 and flange 8 are austenitic stainless steel, austenitic stainless steel is preferably 1Cr17Mn6Ni15N, 0Cr18Ni10Ti or 1Cr18Ni12Mo3Ti, experimental results show that when pressing plate and flange are selected above weak magnetic conduction or non-magnetic material, the magnetic line of force being absorbed is minimum, and the magnetic induction intensity of electromagnetic generator weakens minimum; The power frequency of power supply is 50Hz, and current strength is preferably 80-90A, and current strength is too high, and the joule heat that induced-current produces is excessive, causes part forming core core heavily to be melted, and the refining effect of solidified structure is suppressed, and solidified structure starts chap; The round platform that graphite centre rod 7 is 1.2-1.4 for tapering, tapering round platform is to shrink coated graphite centre rod and increasing friction force for fear of drawing pipe in process of billet withdrawal.The roughness of the inner surface of graphite overcoat 2 and graphite centre rod 7 outer surfaces is below 0.5.
The course of work of the present invention is: by pressing plate 3 and flange 8, this device is fixed on electric furnace, the inlet 1 of graphite overcoat 2 is immersed under molten metal liquid level, in cooling copper sheathing 5, stainless steel cooling jacket 14, pass into cooling water, opening power, now molten metal enters inner chamber 12, and forms continuous pipe under draw-gear draw.Yoke 9 can strengthen the electromagnetic field that solenoid 10 produces, and yoke material can be selected pure iron.Cooling water in stainless steel cooling jacket 14 can prevent the long-time high-temperature baking of solenoid 10 and damage.
In order to reduce leakage field, improve the magnetic induction intensity in working region simultaneously, in electromagnetism generation cavity 15, be also provided with the poly-magnet frame of annular.
For those skilled in the art, under the premise without departing from the principles of the invention, likely to concrete size, or partial structurtes make some improvements and modifications, and these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. copper pipe and a copper alloy tube continuous up-casting belt carcass crystal system, is characterized in that: comprise outside graphite overcoat (2) and inner graphite centre rod (7), and graphite overcoat (2) and graphite centre rod (7) form annular inner chamber (12); The bottom of graphite overcoat (2) is provided with inlet (1), and graphite overcoat (2) middle part is up set with pressing plate (3), flange (8) and cooling copper sheathing (5) successively; Between described pressing plate (3) and graphite overcoat (2), be provided with the refractory material protective sleeve (11) that 15-20mm is thick; In described pressing plate (3), be provided with cooling jacket (14), in cooling jacket (14), be provided with electromagnetism generation cavity (15), multiple solenoids (10) are installed in electromagnetism generation cavity (15), solenoid (10) is connected with three phase mains, and the yoke (9) that permeability magnetic material is made is equipped with in the outside of solenoid (10); Described pressing plate (3) and flange (8) are austenitic stainless steel; The power frequency of described three phase mains is 50Hz, and current strength is 80-90A; The round platform that described graphite centre rod (7) is 1.2-1.4 for tapering.
2. copper pipe according to claim 1 and copper alloy tube continuous up-casting belt carcass crystal system, is characterized in that: in described cooling copper sheathing (5), be provided with spaced apart deflection plate (4).
3. copper pipe according to claim 2 and copper alloy tube continuous up-casting belt carcass crystal system, is characterized in that: described refractory material protective sleeve is silicon carbide brick, corundum brick protective sleeve or fire clay cover; The roughness of the inner surface of described graphite overcoat (2) and graphite centre rod (7) outer surface is below 0.5.
4. copper pipe according to claim 3 and copper alloy tube continuous up-casting belt carcass crystal system, is characterized in that: described cooling jacket (14) is stainless steel cooling jacket.
5. according to claim 1-4 arbitrary described copper pipe and copper alloy tube continuous up-casting belt carcass crystal system, it is characterized in that: described electromagnetism generation cavity (15) is provided with the poly-magnet frame of annular.
6. according to claim 1-4 arbitrary described copper pipe and copper alloy tube continuous up-casting belt carcass crystal system, it is characterized in that: described austenitic stainless steel is preferably 1Cr17Mn6Ni15N, 0Cr18Ni10Ti or 1Cr18Ni12Mo3Ti.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320873592.9U CN203610633U (en) | 2013-12-29 | 2013-12-29 | Cored crystallization system for up-drawing continuous casting of copper tubes and copper alloy tubes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320873592.9U CN203610633U (en) | 2013-12-29 | 2013-12-29 | Cored crystallization system for up-drawing continuous casting of copper tubes and copper alloy tubes |
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| CN203610633U true CN203610633U (en) | 2014-05-28 |
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| CN201320873592.9U Expired - Fee Related CN203610633U (en) | 2013-12-29 | 2013-12-29 | Cored crystallization system for up-drawing continuous casting of copper tubes and copper alloy tubes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691901A (en) * | 2013-12-29 | 2014-04-02 | 山东亨圆铜业有限公司 | Cored crystallizer for upwardly drawing continuous casting copper tubes and method for manufacturing high-performance copper alloy tubes |
| CN104923753A (en) * | 2015-06-30 | 2015-09-23 | 洛阳双瑞达特铜有限公司 | Core print for vertical type semicontinuous casting of thin-wall hollow cast tube |
| CN113275523A (en) * | 2021-05-24 | 2021-08-20 | 沈阳诚至信电炉有限公司 | Copper strip blank crystallizer adopting upward-drawing method and casting method |
-
2013
- 2013-12-29 CN CN201320873592.9U patent/CN203610633U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691901A (en) * | 2013-12-29 | 2014-04-02 | 山东亨圆铜业有限公司 | Cored crystallizer for upwardly drawing continuous casting copper tubes and method for manufacturing high-performance copper alloy tubes |
| CN103691901B (en) * | 2013-12-29 | 2015-06-24 | 山东亨圆铜业有限公司 | Cored crystallizer for upwardly drawing continuous casting copper tubes and method for manufacturing high-performance copper alloy tubes |
| CN104923753A (en) * | 2015-06-30 | 2015-09-23 | 洛阳双瑞达特铜有限公司 | Core print for vertical type semicontinuous casting of thin-wall hollow cast tube |
| CN113275523A (en) * | 2021-05-24 | 2021-08-20 | 沈阳诚至信电炉有限公司 | Copper strip blank crystallizer adopting upward-drawing method and casting method |
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Granted publication date: 20140528 Termination date: 20151229 |
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