CN103143690A - Continuous casting device and method for directly preparing metal rod or wire - Google Patents
Continuous casting device and method for directly preparing metal rod or wire Download PDFInfo
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- CN103143690A CN103143690A CN2013101128898A CN201310112889A CN103143690A CN 103143690 A CN103143690 A CN 103143690A CN 2013101128898 A CN2013101128898 A CN 2013101128898A CN 201310112889 A CN201310112889 A CN 201310112889A CN 103143690 A CN103143690 A CN 103143690A
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- crystallizer
- wire rod
- metal bar
- crucible
- molten steel
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Abstract
The invention belongs to the technical field of metal continuous casting, and relates to a continuous casting device and method for directly preparing a metal rod or wire. The continuous casting device comprises a crucible (3), a crystallizer (8) and a throwing mechanism (18), wherein a vertical continuous casting mode is adopted in the continuous casting device, induction smelting is carried out under a vacuum or protection atmosphere, and controllable throwing is carried out under a positive pressure, an induction coil (2) is arranged at the periphery of the crucible (3), the crystallizer (8) is vertically arranged below the crucible (3) and is tightly matched with the crucible (3), a cooling device (17) is arranged below the crystallizer (8), the throwing mechanism (18) is arranged below the cooling device (17), and the cooling device (17), the throwing mechanism (18) and the crystallizer (8) are kept to be coaxial. According to the continuous casting device and method, the continuous casting rod or wire with stable quality and smooth and bright surface can be directly prepared.
Description
Technical field
The invention belongs to the continuous casting of metal technical field, relate to a kind of casting apparatus and the method for direct preparation metal bar or wire rod.
Background technology
The metal bar of minor diameter or the production of wire rod are rolled acquisition after generally adopting continuous casting to go out strand again, because the technological process of production is longer, improved cost, especially for some high alloys because hardness is high plasticity poor, the distortion difficulty adopts this technique lumber recovery low.The general wire horizontal continuous casting method that adopts is made the high alloy wire rod at present, and as phosphorus content or the high built-up welding solid core welding wire of alloy content, casting blank section is φ 3～15mm.The method is generally at steel ladle bottom boiling water mouth and closely be connected with the crystallizer of horizontal positioned, and molten steel is directly pulled out by drawing device after crystallizer solidifies.Different with the mode of mean level continuous casting technology vibrating crystallizer, the method adopt crystallizer and steel ladle be connected and fixed motionless, control the throwing mode such as the gap throwing is realized from once directly cast form of liquid metal, thereby it is simple to have equipment, easy to operate, production efficiency is high, low cost and other advantages.
Due to bar or wire horizontal continuous casting strand diameter little, the crystallizer intensity of cooling is large, molten steel flow and fill the type difficulty, frictional resistance between strand outlet temperature higher and strand and crystallizer metal pattern is large, therefore often occurs the problems such as casting fracture of wire, strand are broken, strand center porosity, casting billet surface oxidation in actual production.In addition, need to set up certain liquid level due to bar or wire horizontal continuous casting, be unsuitable for the preparation of metal bar in molten steel amount situation seldom or wire rod, give to be used for the laboratory research and development and to make troubles.
Summary of the invention
The purpose of this invention is to provide casting apparatus and the method for a kind of direct preparation metal bar or wire rod, it can directly produce surface-brightening, stay-in-grade metal bar or wire rod, is particularly suitable for preparation metal bar or wire rod in molten steel amount situation seldom.
To achieve these goals, the present invention has adopted following technical scheme:
The casting apparatus of a kind of direct preparation metal bar or wire rod, it comprises crucible 3, crystallizer 8 and drawing billet mechanism 18, this device adopts vertical continuous casting mode, induction melting under vacuum or protective atmosphere, throwing controllably under positive pressure; The outer induction coil 2 that is arranged with of crucible 3; Crystallizer 8 vertically is placed in described crucible 3 belows, and closely cooperates with crucible 3; Cooling device 17 is positioned at crystallizer 8 belows, and drawing billet mechanism 18 is positioned at cooling device 17 belows, and cooling device 17, drawing billet mechanism 18 keep coaxial with crystallizer 8.
Described induction coil 2 and crucible 3 are positioned at seal chamber 5; The all or part of seal chamber 5 that is positioned at of described crystallizer 8.
Described seal chamber 5 upsides are furnished with molten steel temperature checkout gear 6, and this molten steel temperature checkout gear 6 detects molten steel temperature and feeds back to induction power supply 1, and then control the power output of induction power supply 1 with the holding temperature of control molten steel 4.
Described seal chamber 5 is connected with the protection inertia source of the gas 12 that is provided with the gas flow regulating valve 11 of controlling inert gas flow.
Described seal chamber 5 also is provided with the gas pressure detection unit 10 that detects seal chamber 5 internal pressures, and this gas pressure detection unit 10 is transferred to PLC control system 13 with pressure signal, then controls gas flow regulating valve 11 by PLC control system 13.
Described cooling device 17 separates with crystallizer, and is connected with the cooling water recirculation system 14 that is provided with the liquid flow regulating valve 15 of controlling the cooling liquid flow.
Described cooling device 17 is also with the strand outlet temperature checkout gear 16 that is arranged in crystallizer 8 exits, for detection of the outlet temperature of strand 19 and be transferred to PLC control system 13, controls liquid flow regulating valves 15 by PLC control system 13.
The motion of described drawing billet mechanism 18 is controlled by PLC control system 13.
Described crystallizer 8 is forced cooler crystallizer or hot type crystallizer for cooling water.
The capacity minimum of described crucible 3 is 50 grams, and its material is magnesia, graphite or quartz.
This device is applicable to prepare metal bar or the wire rod that cross dimensions is 2-15mm.
The continuous cast method of the casting apparatus of above-mentioned direct preparation metal bar or wire rod wherein, adopts the vertical continuous casting mode, induction melting under vacuum or protective atmosphere, throwing controllably under positive pressure; Concrete steps are as follows:
(1) opening PLC control system 13 arranges the throwing pattern and sets temperature and flow parameter;
(2) put into raw material in seal chamber 5, conducting induction coil 2 is smelted into molten steel 4 with raw material crucible 5 is interior, requires in the chamber vacuum keep higher than 10
-1Pa;
(3) after molten steel 4 fusings fully, spend under temperature at 20～200 ℃ and be incubated 2～50 minutes;
(4) pass into inert gas in seal chamber 5, pressure is controlled between 0.01～0.2MPa;
(5) start drawing billet mechanism 18 throwings, start simultaneously cooling device 17, control the strand outlet temperature below 400 ℃;
The strand 19 of (6) pulling out cuts off or reels, and process of billet withdrawal is carried out continuously until the molten steel 4 in crucible 3 pulls.
The throwing pattern that described PLC control system 13 arranges is for drawing-stop-La, draw-push away-stop-La or draw continuously.
Temperature-detecting device 16 detects molten steel temperature and feeds back to induction power supply 1, shows to regulate output power of power supply control to temperature control and the insulation of molten steel by PID.
Temperature-detecting device 16 detects the strand outlet temperature and is transferred to PLC control system 13, controls intensities of cooling by the liquid flow regulating valve 15 of PLC system's adjusting cooling device 17 and cooling water recirculation system 14.
Beneficial effect of the present invention is: the present invention adopts vertical form, utilizes the gravity feeding effect, and gas, impurity easily float, and fractography is even, the especially applicable situation that the molten steel amount is less, the foundry goods diameter is less and molten steel flow is relatively poor; The present invention adopts the induction melting mode, and burn-off rate is fast; A cooling system that separates with crystallizer is set, solves the problem that strand outlet temperature height easily causes oxidation; Thereby set up certain malleation by the protective gas that is filled with controllable pressure in steel ladle, promote molten steel forming and feeding; The throwing system adopts PLC to control, and can switch easily between different throwing patterns, and technological parameter of billet withdrawal can be controlled easily and adjust.
Description of drawings
Fig. 1 is the structural representation of the casting apparatus of metal bar of the present invention or wire rod.
[primary clustering symbol description]
1 induction power supply 11 gas flow regulating valves
2 induction coil 12 protection inertia sources of the gas
3 crucible 13 PLC control systems
4 molten steel 14 cooling water recirculation systems
5 seal chamber 15 liquid flow regulating valves
6 molten steel temperature checkout gear 16 strand outlet temperature checkout gears
7 observation window 17 cooling devices
8 crystallizer 18 drawing billet mechanisms
9 pressure vacuum gauge 19 strands
10 gas pressure detection unit
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.The present invention is not limited to following examples.
The present invention is applicable to prepare metal bar or the wire rod that cross dimensions is 2-15mm.
As shown in Figure 1, be the structural representation of the casting apparatus of metal bar of the present invention or wire rod.This device comprises crucible 3, the outer induction coil 2 that is equipped with induction power supply 1 that is arranged with of crucible 3; Crystallizer 8 vertically is placed in crucible 3 belows, and closely cooperates with crucible 3, prevents that the molten steel 4 that melts from spilling from surrounding; Wherein, induction coil 2 and crucible 3 are positioned at seal chamber 5; The all or part of seal chamber 5 that is positioned at of crystallizer 8; Cooling device 17 is coaxial is positioned at crystallizer 8 belows, and drawing billet mechanism 18 is coaxial is positioned at cooling device 17 belows; Control drawing billet mechanism 18 motions by PLC control system 13, thereby control the throwing pattern, strand 19 is constantly pulled out.
Described seal chamber 5 upsides are furnished with molten steel temperature checkout gear 6, and this molten steel temperature checkout gear 6 detects molten steel temperature and feeds back to induction power supply 1, and then control the power output of induction power supply 1 with the holding temperature of control molten steel 4.
Described seal chamber 5 is connected with protection inertia source of the gas 12, and is provided with the gas flow regulating valve 11 of controlling inert gas flow; In the present embodiment, described seal chamber 5 also is provided with gas pressure detection unit 10, this gas pressure detection unit 10 is positioned on seal chamber 5, for detection of the pressure in seal chamber 5 and signal is transferred to PLC control system 13, control gas flow regulating valve 11 by PLC control system 13 again, reach the stable purpose of controlling seal chamber 5 interior gas pressures; Can prevent that under vacuum or inert gas shielding molten steel 4 from oxidation occuring in fusion process.
In addition, also be provided with pressure vacuum gauge 9 and observation window 7 on seal chamber 5, be convenient to observe more intuitively the interior pressure of seal chamber 5 and the fusing situation of molten steel 4.
Described cooling device 17 is connected with cooling water recirculation system 14, and is provided with the liquid flow regulating valve 15 of controlling the cooling liquid flow; In the present embodiment, described cooling device 17 is also with strand outlet temperature checkout gear 16, this strand outlet temperature checkout gear 16 is arranged in the exit of crystallizer 8, for detection of the outlet temperature of strand 19 and be transferred to PLC control system 13, control liquid flow regulating valve 15 by PLC control system 13, reach the purpose of controlling intensity of cooling and then controlling the strand outlet temperature.
In the present invention, described crucible 3 can adopt different capacity, and minimum is 50 grams, and its material can adopt magnesia, graphite, quartz etc.; The size of the type of induction power supply 1 and power, induction coil 2 can be selected according to the capacity of crucible 3.
In the present invention, crystallizer 8 can adopt cooling water to force cool metal mould or graphite mo(u)ld crystallizer and two kinds of forms of hot type crystallizer, and these two kinds of crystallizers have interchangeability installing.
The continuous cast method concrete steps of direct preparation metal bar of the present invention or wire rod are as follows:
(1) select the crystallizer 8 of suitable type according to metal species, open PLC control system 13 and set the throwing pattern;
(2) open seal chamber 5, close seal chamber 5 after the raw material of packing into, open induction power supply 1, conducting induction coil 2 is smelted into molten steel 4 with raw material crucible 3 is interior, requires in the chamber vacuum keep higher than 10
-1Pa;
(3) pre-set overheating insulation temperature after molten steel 4 is melted, is spent under temperature at 20～200 ℃ and is incubated 2～50 minutes, and concrete temperature retention time is determined according to the molten steel capacity;
(4) gas flow control valve 11 of opening protection inertia source of the gas 12 passes into inert gas in seal chamber 5, pressure is controlled between 0.01～0.1MPa;
(5) set gas flow regulating valve 11 maximum openings and pressure compensation parameter on PLC control system 13, strand 19 outlet temperatures generally below 400 ℃, set the maximum opening of liquid flow regulating valve 15;
(6) start drawing billet mechanism 18 throwings, keeping the inlet pressure of crystallizer 8 by the Air pressure compensation mode is steady state value, controls the strand outlet temperature by cooling device 17;
The strand 19 of (7) pulling out cuts off or reels, and process of billet withdrawal is carried out continuously until the molten steel 4 in crucible 3 pulls.
In said process, can realize drawing-stopping by PLC control system 13-La, draw-push away-stop-La and the throwing pattern such as draw continuously; General high alloy adopt cooling water force cooler crystallizer and adopt draw-push away-stop-the pull-mode throwing, and copper and binary, ternary aluminum alloy adopt the hot type crystallizer and adopt continuous pull-mode throwing.
The method according to this invention, the casting diameter is CoFeSiB, the FeNiCrAl of φ 5～8, bar or the wire rod of Cu, AlSi, the concrete technology parameter sees Table 1.The bar that casts out or wire rod have carried out surface quality and have observed and structure observation, and its result has been listed table 2 in.
Table 1 is enumerated the bar of embodiment or the technological parameter of wire rod continuous casting
Table 2 is enumerated the bar of embodiment or surface quality and the tissue of wire rod
| Alloy species | Gauge or diameter of wire (mm) | Surface quality | Tissue |
| CoFeSiB | 5 | The light zero defect | Polycrystalline |
| FeNiCrAl | 5 | The light zero defect | Polycrystalline |
| Cu | 5、8 | The light zero defect | Monocrystalline |
| AlSi | 5、8 | The light zero defect | Fibrous crystalline substance |
Claims (15)
1. direct casting apparatus of preparation metal bar or wire rod, it comprises crucible (3), crystallizer (8) and drawing billet mechanism (18), it is characterized in that: this device adopts vertical continuous casting mode, induction melting under vacuum or protective atmosphere, throwing controllably under positive pressure; The outer induction coil (2) that is arranged with of crucible (3); Crystallizer (8) vertically is placed in below described crucible (3), and closely cooperates with crucible (3); Cooling device (17) is positioned at crystallizer (8) below, and drawing billet mechanism (18) is positioned at cooling device (17) below, and cooling device (17), drawing billet mechanism (18) are coaxial with crystallizer (8) maintenance.
2. the casting apparatus of direct preparation metal bar as claimed in claim 1 or wire rod, it is characterized in that: described induction coil (2) and crucible (3) are positioned at seal chamber (5); The all or part of seal chamber (5) that is positioned at of described crystallizer (8).
3. the casting apparatus of direct preparation metal bar as claimed in claim 1 or wire rod, it is characterized in that: described seal chamber (5) upside is furnished with molten steel temperature checkout gear (6), this molten steel temperature checkout gear (6) detects molten steel temperature and feeds back to induction power supply (1), and then controls the power output of induction power supply (1) with the holding temperature of control molten steel (4).
4. the casting apparatus of direct preparation metal bar as claimed in claim 1 or wire rod is characterized in that: described seal chamber (5) is connected with the protection inertia source of the gas (12) that is provided with the gas flow regulating valve (11) of controlling inert gas flow.
5. the casting apparatus of direct preparation metal bar as claimed in claim 4 or wire rod, it is characterized in that: described seal chamber (5) also is provided with the gas pressure detection unit (10) that detects seal chamber (5) internal pressure, this gas pressure detection unit (10) is transferred to PLC control system (13) with pressure signal, then controls gas flow regulating valve (11) by PLC control system (13).
6. the casting apparatus of direct preparation metal bar as claimed in claim 1 or wire rod, it is characterized in that: described cooling device (17) separates with crystallizer, and is connected with the cooling water recirculation system (14) that is provided with the liquid flow regulating valve (15) of controlling the cooling liquid flow.
7. the casting apparatus of direct preparation metal bar as claimed in claim 6 or wire rod, it is characterized in that: described cooling device (17) is also with the strand outlet temperature checkout gear (16) that is arranged in crystallizer (8) exit, for detection of the outlet temperature of strand (19) and be transferred to PLC control system (13), control liquid flow regulating valve (15) by PLC control system (13).
8. the casting apparatus of direct preparation metal bar as claimed in claim 1 or wire rod, it is characterized in that: the motion of described drawing billet mechanism (18) is controlled by PLC control system (13).
9. the casting apparatus of direct preparation metal bar as claimed in claim 1 or wire rod is characterized in that: described crystallizer (8) is that cooling water is forced cooler crystallizer or hot type crystallizer.
10. the casting apparatus of direct preparation metal bar as claimed in claim 1 or wire rod, it is characterized in that: the capacity minimum of described crucible (3) is 50 grams, its material is magnesia, graphite or quartz.
11. the casting apparatus of direct preparation metal bar as claimed in claim 1 or wire rod is characterized in that: this device is applicable to prepare metal bar or the wire rod that cross dimensions is 2-15mm.
12. the continuous cast method of the casting apparatus of direct preparation metal bar as described in one of claim 1-11 or wire rod is characterized in that: adopt the vertical continuous casting mode, induction melting under vacuum or protective atmosphere, throwing controllably under positive pressure; Concrete steps are as follows:
(1) opening PLC control system (13) arranges the throwing pattern and sets temperature and flow parameter;
(2) put into raw material in seal chamber (5), conducting induction coil (2) is smelted into raw material molten steel (4) in crucible (5), requires in the chamber vacuum keep higher than 10
-1Pa;
(3) after molten steel (4) fusing fully, spend under temperature at 20～200 ℃ and be incubated 2～50 minutes;
(4) pass into inert gas in seal chamber (5), pressure is controlled between 0.01～0.2MPa;
(5) start drawing billet mechanism (18) throwing, start simultaneously cooling device (17), control the strand outlet temperature below 400 ℃;
The strand of (6) pulling out (19) cuts off or reels, and process of billet withdrawal is carried out continuously until the molten steel (4) in crucible (3) pulls.
13. the described method as claim 11 is characterized in that: the throwing pattern that described PLC control system (13) arranges is for drawing-stop-La, draw-push away-stop-La or draw continuously.
14. the described method as claim 11 is characterized in that: temperature-detecting device (16) detects molten steel temperature and feeds back to induction power supply (1), shows to regulate output power of power supply control to temperature control and the insulation of molten steel by PID.
15. the described method as claim 11, it is characterized in that: temperature-detecting device (16) detects the strand outlet temperature and is transferred to PLC control system (13), controls intensity of cooling by the liquid flow regulating valve (15) of PLC system's adjusting cooling device (17) and cooling water recirculation system (14).
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| CN2013101128898A CN103143690A (en) | 2013-04-02 | 2013-04-02 | Continuous casting device and method for directly preparing metal rod or wire |
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|---|---|---|---|
| CN2013101128898A CN103143690A (en) | 2013-04-02 | 2013-04-02 | Continuous casting device and method for directly preparing metal rod or wire |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190891A (en) * | 2014-09-10 | 2014-12-10 | 西安工业大学 | Device for manufacturing small-diameter metal single-crystal wire |
| WO2018082241A1 (en) * | 2016-11-01 | 2018-05-11 | 东莞市逸昊金属材料科技有限公司 | New continuous casting system for amorphous master alloy ingot and usage method therefor |
| CN110195140A (en) * | 2019-07-17 | 2019-09-03 | 圣航粉末冶金河北有限公司 | A kind of method of high-purity reduced iron vacuum melting vertical continuous casting production melting pure iron |
| CN111155172A (en) * | 2020-01-14 | 2020-05-15 | 浙江清华柔性电子技术研究院 | Application of spiral crystal selector in preparation of thermocouple wire material, thermocouple wire and application of thermocouple wire |
| CN112034905A (en) * | 2020-08-21 | 2020-12-04 | 浙江英洛华磁业有限公司 | Automatic temperature rise control method for medium-frequency induction smelting of neodymium iron boron melt |
| CN114178500A (en) * | 2021-10-19 | 2022-03-15 | 英特派铂业股份有限公司 | Preparation device and method of high-performance platinum and platinum-rhodium thermocouple wire |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190891A (en) * | 2014-09-10 | 2014-12-10 | 西安工业大学 | Device for manufacturing small-diameter metal single-crystal wire |
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| WO2018082241A1 (en) * | 2016-11-01 | 2018-05-11 | 东莞市逸昊金属材料科技有限公司 | New continuous casting system for amorphous master alloy ingot and usage method therefor |
| CN110195140A (en) * | 2019-07-17 | 2019-09-03 | 圣航粉末冶金河北有限公司 | A kind of method of high-purity reduced iron vacuum melting vertical continuous casting production melting pure iron |
| CN111155172A (en) * | 2020-01-14 | 2020-05-15 | 浙江清华柔性电子技术研究院 | Application of spiral crystal selector in preparation of thermocouple wire material, thermocouple wire and application of thermocouple wire |
| CN112034905A (en) * | 2020-08-21 | 2020-12-04 | 浙江英洛华磁业有限公司 | Automatic temperature rise control method for medium-frequency induction smelting of neodymium iron boron melt |
| CN112034905B (en) * | 2020-08-21 | 2021-11-16 | 浙江英洛华磁业有限公司 | Automatic temperature rise control method for medium-frequency induction smelting of neodymium iron boron melt |
| CN114178500A (en) * | 2021-10-19 | 2022-03-15 | 英特派铂业股份有限公司 | Preparation device and method of high-performance platinum and platinum-rhodium thermocouple wire |
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Application publication date: 20130612 |