CN109093085B - Hollow section steel dummy bar for cast iron horizontal continuous casting - Google Patents
Hollow section steel dummy bar for cast iron horizontal continuous casting Download PDFInfo
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- CN109093085B CN109093085B CN201810872080.8A CN201810872080A CN109093085B CN 109093085 B CN109093085 B CN 109093085B CN 201810872080 A CN201810872080 A CN 201810872080A CN 109093085 B CN109093085 B CN 109093085B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
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Abstract
The invention discloses a hollow section steel dummy bar for cast iron horizontal continuous casting, which comprises a plurality of traction rods, a dummy bar head and a dummy bar screw, wherein every two adjacent traction rods are connected through a mortise and tenon structure and are fixed through a pin vertically penetrating through the mortise and tenon structure, the traction rods are connected with one end of the dummy bar head through the mortise and tenon structure and are fixed through a pin vertically penetrating through the mortise and tenon structure, the other end of the dummy bar head is provided with a dummy bar head screw hole, the dummy bar screw is inserted into the dummy bar head screw hole and comprises a dummy bar bolt, and the dummy bar bolt penetrates through a dummy bar bolt baffle plate and is welded with the dummy bar bolt baffle plate together and is connected with the dummy bar head screw hole. The dummy bar disclosed by the invention solves the problems that the conventional draw bars are heavy and the gap between the two draw bars is easy to slip. The rectangular section hollow profile steel traction rod is adopted, so that the weight is reduced, the use is safe, the operation is convenient, the production efficiency is high, the energy is saved, and the produced cast iron profile is compact in structure and good in uniformity.
Description
Technical Field
The invention belongs to the technical field of cast iron horizontal continuous casting production devices, and relates to a hollow section steel dummy bar for cast iron horizontal continuous casting.
Background
The horizontal continuous casting of cast iron is a novel technology for producing modern high-quality iron castings, and is listed as a key promotion project of national-level scientific and technological achievements. The cast iron section has the characteristics of compact structure, fine graphite, good machining performance, excellent pressure resistance and fatigue resistance, few casting defects, short production period and the like, is widely applied to the fields of machinery, hydraulic pressure, metallurgy, textile, printing and other industries, and becomes a preferred cast iron material for upgrading and updating products at present.
In the horizontal continuous casting production process of cast iron, a dummy bar is one of important devices for cast iron continuous casting, has the functions of dummy bar and throwing, and generally consists of a dummy bar head and a draw bar. Because the inner cavity of the crystallizer graphite sleeve in horizontal continuous casting is opened front and back, one end of a dummy bar with a dummy head is required to be plugged into the crystallizer graphite sleeve arranged at the lower part of the heat preservation furnace before casting so as to block molten iron; the other end is clamped and connected by an upper traction roller and a lower traction roller, the molten iron flows through the bottom of the heat preservation furnace after casting and enters a graphite sleeve of the crystallizer, and the end part of the initial casting blank of the cast iron section is condensed with a dummy ingot head together with the molten iron cooled by the crystallizer. Then, a pulling-stopping-pulling mode is used for pulling a dummy bar by a traction roller, the cast iron section casting blank is intermittently pulled out from the crystallizer, the shape of the section of the cast iron section is determined by the shape of the inner hole of the graphite sleeve of the crystallizer, when a dummy bar head passes through the traction roller, the dummy bar completes the initial dummy bar task, and the traction roller of a subsequent production tractor can directly clamp the cast iron section for traction and enters the normal continuous casting blank-pulling production state. At this time, the dummy bar is separated from the cast iron section, and the dummy bar is transferred to a dummy bar storage place to be used in the next continuous casting production.
Therefore, at the beginning stage of the continuous casting production of the cast iron section, auxiliary dummy bar drawing equipment such as a drawing bar and a dummy bar head is needed to complete the initial drawing task of the cast iron section production. The work stability and reliability of the draw bar can directly influence the success rate of the cast iron section bar continuous casting operation. At present, solid round steel is generally used for processing a traction rod in the horizontal continuous casting production of cast iron sectional materials. There are two main problems with this type of drawbar: firstly, the weight is heavy, the weight is greatly increased due to the fact that the steel is processed by the solid round steel, difficulty is increased for carrying and installing the steel, only hoisting can be adopted, and production cost and labor intensity are undoubtedly increased; and the dummy bar is formed by connecting a dummy head and a plurality of traction bars, the traction bars are generally hinged by pin shafts, the traction bars are respectively connected by bolts, and pins are required to be inserted for preventing looseness. Because the dummy bar is longer, it is more difficult to process the cotter way and the protruding shaft at both ends, high cost, size precision is difficult to control, in addition, must reserve great clearance between cotter way and the protruding shaft, just so can make it possess commonality and replaceability, not only bring the difficulty for the manufacturing and transportation of dummy bar, more importantly when drawing and pulling, the carry over pinch rolls in case when impressing this clearance, because the decurrent pressure of carry over pinch rolls and the metal surface's the skidding, make the carry over pinch rolls stop the clearance department between two traction rods very easily and skid, can not make the straight-line motion of dummy bar through the rotation of carry over pinch rolls, realize the drawing and pulling of cast iron section bar, this will cause production can not normally go on.
Disclosure of Invention
The invention aims to provide a hollow section steel dummy bar for cast iron horizontal continuous casting, which solves the problems that the weight of a draw bar is large and a gap between two draw bars is easy to slip in the prior art.
The technical scheme adopted by the invention is that the hollow section steel dummy bar for cast iron horizontal continuous casting comprises a plurality of traction rods, a dummy bar head and a dummy bar screw, wherein every two adjacent traction rods are connected through a mortise and tenon structure and are fixed through a pin vertically penetrating through the mortise and tenon structure;
every traction lever includes hollow shaped steel, and the one end of hollow shaped steel has the forked tail fourth of the twelve earthly branches link through welding seam a welding, and the other end has the forked tail joint through welding seam b welding, and the forked tail fourth of the twelve earthly branches link is provided with the forked tail fourth of the twelve earthly branches, and set up the through-hole a that runs through the forked tail fourth of the twelve earthly branches perpendicularly, and the forked tail joint link is provided with the forked tail tenon, and set up the through-hole b that runs through the forked tail perpendicularly, and the diameter of through-hole an.
Yet another feature of the present invention is that,
one end of the dummy bar head connected with the traction rod is provided with a dovetail tenon a, and the dovetail tenon a is connected with a dovetail mortise and tenon and is fixed through a straight shank pin.
The ingot guiding rod is respectively pressed by a front traction upper roller, a front traction lower roller, a rear traction upper roller and a rear traction lower roller which are positioned at two sides of the traction rod, the front traction upper roller, the front traction lower roller, the rear traction upper roller and the rear traction lower roller form a traction roller set to synchronously rotate to drive the ingot guiding rod to linearly move, and straight grooves are arranged on the roller surfaces of the front traction upper roller, the front traction lower roller, the rear traction upper roller and the rear traction lower roller to increase the friction force of the roller surface.
The cross section of the hollow section steel is square or rectangular.
The through hole a can also be a dovetail-shaped mortise hole penetrating through the dovetail-shaped mortise and a bolt counter bore located at one end of the dovetail-shaped mortise hole, the axis of the through hole a is in the same straight line with the axis of the dovetail-shaped mortise hole, and the cross section of the bolt counter bore is hexagonal.
The draw bar and the dummy bar head can be fixed through an inner hexagonal bolt.
The cross section of the dummy bar head is consistent with the cross section of the inner hole of the graphite sleeve of the crystallizer matched with the dummy bar head.
The invention also provides a working method of the hollow section steel dummy bar for cast iron horizontal continuous casting, which uses the hollow section steel dummy bar for cast iron horizontal continuous casting, and the specific operation process comprises the following steps:
the dummy bar consists of a plurality of traction rods, a dummy head and a dummy screw, and is fixedly connected into a whole through a straight shank pin after being connected by mortise and tenon, so that the plurality of traction rods are fixedly connected with the dummy head, and the dummy screw is arranged on the dummy head with the same shape as the inner hole of the graphite sleeve;
processing a crystallizer and a dummy bar head according to a cast iron sectional material to be produced, selecting the dummy bar head with the same shape as the inner hole of the graphite sleeve, inserting the dummy bar head by adopting the reverse rotation of a traction roller to insert the dummy bar in a reverse motion manner, loosening an upper traction roller, manually reversely pushing the dummy bar to insert the dummy bar head into the graphite sleeve of the crystallizer, opening a heating device of a heat preservation furnace, and starting to bake the heat preservation furnace and the crystallizer to remove the moisture of a furnace lining material and bake the furnace lining material to 1200-1300 ℃;
The ingot guiding rod is clamped by the front upper traction roller, the front lower traction roller, the rear upper traction roller and the rear lower traction roller, the inoculated gray iron molten iron or the nodular iron molten iron after spheroidization and inoculation is poured into a holding furnace, when molten iron enters the graphite sleeve of the crystallizer and wraps the dummy bar screw for 0.5-1 minute, starting a traction machine to enable a traction roller set to start intermittent rotation, enabling a dummy bar to linearly move in a pulling-stopping-pulling mode to gradually pull the cast iron section out of the graphite sleeve of the crystallizer, when molten iron is poured into the holding furnace, the cooling water of the crystallizer is opened, after the first traction rod I leaves the traction roller group, and (3) detaching the straight shank pin, detaching and moving the first traction rod I, sequentially detaching other traction rods along with the progress of dummy ingot, and finally screwing down a dummy ingot head from the cast iron section, wherein the production of the dummy ingot is finished, and the production depends on the self-traction of the cast iron section for continuous production.
The outer contour sectional dimension of the dummy bar head is 0.1-0.5 mm smaller than the inner hole sectional dimension of the crystallizer graphite sleeve, so that the dummy bar head can be smoothly inserted into the crystallizer graphite sleeve arranged at the lower part of the heat preservation furnace before production.
The hollow section steel dummy bar for cast iron horizontal continuous casting has the beneficial effects that the problems that the weight of the traction bar is large and the gap between the two traction bars is easy to slip in the prior art are solved. The hollow section steel dummy bar is adopted, so that the weight of the dummy bar is reduced, the labor consumption in the production process is saved, the dummy bar can be manually disassembled and assembled, and the dummy bar can also be hoisted by a crane; because the dovetail mortise and tenon structure does not have the clearance of ordinary dummy bar when passing through the carry over pinch rolls, the phenomenon of skidding of carry over pinch rolls and dummy bar when consequently can not appear the dummy bar can realize smoothly that the dummy bar crosses the roller, makes production safe and reliable. The whole system is safe to use and convenient to operate, has the advantages of high production efficiency, energy conservation and the like, and the produced cast iron section has compact structure and good uniformity.
Drawings
FIG. 1 is a schematic view showing the construction of a hollow section steel dummy bar for horizontal continuous casting of cast iron according to the present invention;
FIG. 2 is a schematic view of the construction of the drawbar;
FIG. 3 is a schematic view of the structure of the connection of the draw bar and the dummy bar head;
FIG. 4 is a schematic structural view of the dummy bar and the pulling roll working in cooperation with each other;
FIG. 5 is a schematic structural view of a bolt counterbore designed in the drawbar;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
fig. 7 is a sectional view taken along line a-a in fig. 5.
In the drawing, I. a traction rod, II. a dummy bar head, III. a dummy bar screw, IV. a cast iron section bar, 1. a hollow section bar, 2. welding seams a, 3. a dovetail mortise connecting end, 4. a straight shank pin, 5. a dovetail joint connecting end, 6. a welding seam b, 7. a dovetail tenon a, 8. a screw hole of the dummy bar head, 9. a dummy bar bolt, 10. a dummy bar bolt baffle, 11. a dovetail tenon, 12. a through hole b, 13. a through hole a, 14. a dovetail mortise, 15. an internal hexagonal bolt, 16. a bolt counter bore, 17. a dovetail mortise screw hole, 18. a front traction upper roller, 19. a rear traction upper roller, 20. a front lower roller and 21. a rear traction lower roller.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a hollow section steel dummy bar for horizontal continuous casting of cast iron, which comprises a plurality of traction rods I, a dummy bar head II and a dummy bar screw III, wherein every two adjacent traction rods I are connected through a mortise and tenon structure and are fixed through pins vertically penetrating through the mortise and tenon structure, the traction rods I are connected with one end of the dummy bar head II through the mortise and tenon structure and are fixed through the pins vertically penetrating through the mortise and tenon structure, the other end of the dummy bar head II is provided with a dummy bar head screw hole 8, the dummy bar screw III is inserted into the dummy bar head screw hole 8 and comprises a dummy bar bolt 9, and the dummy bar bolt 9 penetrates through a dummy bar bolt baffle plate 10 and is welded with the dummy bar bolt baffle plate 10 and is in threaded connection with the dummy bar head screw hole 8.
As shown in fig. 2, each traction rod I includes hollow section steel 1, dovetail mortise joint end 3 is welded to one end of hollow section steel 1 through welding seam 2, dovetail tenon joint end 5 is welded to the other end through welding seam 6, dovetail mortise joint end 3 is provided with dovetail mortise 14, and through-hole a13 that vertically runs through dovetail mortise 14 is set up, dovetail tenon joint end 5 is provided with dovetail 11, and through-hole b12 that vertically runs through dovetail 11 is set up, through-hole a13 is the same with through-hole b 12's diameter, dovetail 11 is the same with dovetail mortise 14's forked tail angle, in order to ensure that dovetail mortise 14 and dovetail 11 can assemble together, and traction rod I possesses interchangeability.
As shown in fig. 3, a dovetail a7 is arranged at one end of the dummy bar head II connected with the drawbar I, and the dovetail a7 is in mortise and tenon connection with the dovetail mortise 14 and fixed by a straight shank pin 4.
As shown in figure 4, the dummy bar is respectively pressed by a front upper traction roller 18, a front lower traction roller 20, a rear upper traction roller 19 and a rear lower traction roller 21 which are positioned at two sides of a traction rod I, the front upper traction roller 18, the front lower traction roller 20, the rear upper traction roller 19 and the rear lower traction roller 21 form a traction roller group which synchronously rotates to drive the dummy bar to linearly move, straight grooves are arranged on the roller surfaces of the front upper traction roller 18, the front lower traction roller 20, the rear upper traction roller 19 and the rear lower traction roller 21 to increase the friction force of the roller surfaces, power is provided by the traction rollers on the roller surfaces of the flat rollers, the straight grooves are arranged on the roller surfaces of the traction rollers, the two groups of upper and lower traction rollers clamp the dummy bar, and the power is transmitted to the dummy bar through the friction force when the traction rollers rotate, so that the dummy.
As shown in fig. 5, the through hole a13 may also be a dovetail-shaped bolt hole 17 penetrating through the dovetail-shaped bolt 14 and a bolt counterbore 16 located at one end of the dovetail-shaped bolt hole 17, and the axis of the bolt counterbore 16 is the same as the axis of the dovetail-shaped bolt hole 17 in a straight line, and the cross section of the bolt counterbore 16 is hexagonal.
The draw bar I and the dummy bar head II can be fixed through an inner hexagonal bolt 15.
The section of the dummy bar head is one of rectangular, hexagonal, convex, round, n-shaped and other equal section shapes, and the section shape of the inner hole of the graphite sleeve of the crystallizer matched with the dummy bar head is ensured to be consistent.
The cross-sectional shape of the hollow section steel 1 is square or rectangular.
The square and rectangular section hollow section steel of the national standard GB/T6728 and 2002 can be used as the structural cold-bending square hollow section steel or the structural cold-bending rectangular hollow section steel, wherein the section shape of the square section hollow section steel is 60 multiplied by (4 or 5) mm, 80 multiplied by (4 or 5) mm or 120 multiplied by (4, 5, 6 or 8) mm; wherein the cross section of the rectangular section hollow section steel has a shape of 60 × 40 × 4mm, 80 × 60 × (4 or 5) mm, 120 × 80 × (4, 5 or 6) mm, 180 × 100 × (4, 5, 6 or 8) mm. The cold-drawing special-shaped square and rectangular section steel of the national standard GB/T3094-2000 can also be used, and the section shape refers to the dimension; the length of the used square and rectangular section hollow section steel is 3-6 m.
The connecting structure of the dovetail mortise and tenon is a vertical wedge-shaped structure, and meanwhile, the pins are connected by adopting horizontal straight pins; traction is transmitted by mortises and tenons of the vertical dovetail wedge-shaped structures, and the horizontal straight pin pins limit the upper and lower positions of the two traction rods so as to ensure that the two traction rods have no steps.
The shape of the outer contour of the part of the dummy bar head, which is provided with the dummy bar screw and extends into the graphite sleeve of the crystallizer, is consistent with the shape of the inner hole of the graphite sleeve of the crystallizer, the outer contour of the dummy bar head can be a circular section, a rectangular section, a regular hexagon or other special-shaped sections according to the sectional shape of the produced cast iron section, and the outer contour dimension of the dummy bar head is 0.1-0.5 mm smaller than the inner hole of the graphite sleeve, so that the dummy bar head can be smoothly inserted into the graphite sleeve of the crystallizer, which is arranged at the lower part. The size of a screw hole formed in one end of the dummy bar head extending into the graphite sleeve of the crystallizer is M12-M36, and is determined according to the size specification of the cast iron section, wherein the cast iron section with the small section size uses a small screw hole, and the cast iron section with the large section size uses a large screw hole. The thread size of the dummy bar screw is matched with the dummy bar head, the size of the dummy bar screw is M12-M36, the small-size dummy bar screw is used for the small-section specification size cast iron section, and the large-size dummy bar screw is used for the large-section specification size cast iron section.
The invention relates to a working method of a hollow section steel dummy bar for horizontal continuous casting of cast iron, which comprises the following steps:
the dummy bar consists of a plurality of traction rods I, a dummy head II and a dummy screw III, and is fixedly connected into a whole through a straight shank pin 4 after being connected by mortise and tenon, so that the plurality of traction rods I are fixedly connected with the dummy head II, and the dummy screw III is arranged on the dummy head II with the same shape as the inner hole of the graphite sleeve of the crystallizer;
according to the cast iron section bar to be produced, processing a crystallizer and a dummy bar head II, selecting the dummy bar head II with the same shape as the inner hole of the graphite sleeve, wherein the outer contour sectional dimension of the dummy bar head II is 0.1-0.5 mm smaller than the inner hole sectional dimension of the graphite sleeve of the crystallizer, so that the dummy bar head II can be smoothly inserted into the graphite sleeve of the crystallizer arranged at the lower part of the heat preservation furnace before production; when the dummy bar head II is inserted, the pulling roll can be adopted to reversely rotate to enable the dummy bar to reversely move and insert, the upper pulling roll can also be loosened, the dummy bar is reversely pushed manually, the dummy bar head II is inserted into the graphite sleeve of the crystallizer, the heating device of the holding furnace is opened, the holding furnace and the crystallizer are started to be baked, so that the moisture of the furnace lining material is removed, and the furnace lining material is baked to 1200 and 1300 ℃;
Clamping a dummy bar through a front traction upper roller 18, a front traction lower roller 20, a rear traction upper roller 19 and a rear traction lower roller 21, pouring inoculated gray iron molten iron or spheroidized and inoculated ductile iron molten iron into a heat preservation furnace, starting a tractor when the molten iron enters a crystallizer graphite sleeve and wraps a dummy bar screw III for 0.5-1 minute, starting the tractor to enable the traction roller set to rotate intermittently, enabling the dummy bar to move linearly in a pulling-stopping-pulling mode, gradually pulling a cast iron section IV out of the crystallizer graphite sleeve, opening cooling water of the crystallizer when the molten iron is poured into the heat preservation furnace, detaching a straight shank pin 4 after a first traction rod I leaves the traction roller set, detaching and removing the first traction rod I, sequentially detaching other traction rods I along with the progress of the dummy bar, finally screwing down a dummy bar head II from the cast iron section, and finishing the production of the dummy bar, the production depends on the self-traction continuous production of the cast iron section.
Claims (4)
1. The hollow section steel dummy bar for cast iron horizontal continuous casting is characterized by comprising a plurality of traction rods (I), a dummy bar head (II) and a dummy bar screw (III), wherein every two adjacent traction rods (I) are connected through a mortise and tenon structure, and is fixed by a pin vertically penetrating through a mortise and tenon structure, the draw bar (I) is connected with one end of the dummy bar head (II) by the mortise and tenon structure, and is fixed by a pin vertically penetrating through the mortise and tenon structure, the other end of the dummy bar head (II) is provided with a dummy bar head screw hole (8), a dummy bar screw (III) is inserted into the dummy bar head screw hole (8), the dummy bar screw (III) comprises a dummy bar bolt (9), the dummy bar bolt (9) penetrates through the dummy bar bolt baffle (10), is welded with the dummy bar bolt baffle (10) and is in threaded connection with the dummy bar head screw hole (8);
the cross section shape of the dummy bar head (II) is consistent with the cross section shape of the inner hole of the graphite sleeve of the crystallizer used in a matching way;
each traction rod (I) comprises hollow section steel (1), one end of each hollow section steel (1) is welded with a dovetail mortise connecting end (3) through a welding seam a (2), the other end of each hollow section steel (1) is welded with a dovetail tenon connecting end (5) through a welding seam b (6), each dovetail mortise connecting end (3) is provided with a dovetail mortise (14) and is provided with a through hole a (13) which vertically penetrates through the dovetail mortise (14), each dovetail mortise connecting end (5) is provided with a dovetail tenon (11) and is provided with a through hole b (12) which vertically penetrates through the dovetail mortise (11), the diameters of the through holes a (13) and the through holes b (12) are the same, and the dovetail angles of the dovetail mortises (11) and the dovetail mortises (14) are the same;
one end of the dummy bar head (II) connected with the traction rod (I) is provided with a dovetail tenon a (7), and the dovetail tenon a (7) is in mortise and tenon connection with the dovetail mortise (14) and is fixed by a horizontal straight shank pin (4);
traction force is transmitted by mortises and tenons of the vertical dovetail wedge-shaped structure, and the horizontal straight shank pins limit the upper and lower positions of the two traction rods so as to ensure that the two traction rods have no steps; because the clearance that does not have ordinary dummy bar when passing through the carry over pinch rolls of forked tail mortise and tenon structure, the phenomenon of skidding of carry over pinch rolls and dummy bar when consequently can not appearing the dummy bar, the connection structure of forked tail mortise and tenon is perpendicular wedge structure, and the pin adopts the straight shank pin joint of level simultaneously.
2. The hollow section steel dummy bar for horizontal continuous casting of cast iron according to claim 1, wherein the dummy bar is pressed by a front upper pulling roll (18), a front lower pulling roll (20), a rear upper pulling roll (19) and a rear lower pulling roll (21) respectively positioned at both sides of the traction bar (I), the front upper pulling roll (18), the front lower pulling roll (20), the rear upper pulling roll (19) and the rear lower pulling roll (21) form a traction roll group to rotate synchronously to drive the dummy bar to move linearly, and the roll surfaces of the front upper pulling roll (18), the front lower pulling roll (20), the rear upper pulling roll (19) and the rear lower pulling roll (21) are provided with straight grooves to increase the friction force of the roll surfaces.
3. The hollow section steel dummy bar for horizontal continuous casting of cast iron according to claim 1, characterized in that the cross section of the hollow section steel (1) is square or rectangular.
4. A working method of a hollow section steel dummy bar for horizontal continuous casting of cast iron, characterized in that the hollow section steel dummy bar for horizontal continuous casting of cast iron according to claim 2 is used, and the specific operation process comprises the following steps:
step 1, installing dummy bar, connecting a plurality of traction rods (I), dummy bar heads (II) and dummy bar screws (III):
the dummy bar consists of a plurality of traction rods (I), a dummy head (II) and a dummy screw (III), the traction rods (I) and the dummy head (II) are fixedly connected into a whole through horizontal straight shank pins (4) after being connected by mortise and tenon, the plurality of traction rods (I) are fixedly connected with the dummy head (II), and the dummy screw (III) is arranged on the dummy head (II) with the same shape as the inner hole of the graphite sleeve of the crystallizer;
step 2, preparation of production, namely inserting a dummy bar head (II) into a graphite sleeve of a crystallizer:
processing a crystallizer and a dummy bar head (II) according to a cast iron sectional material to be produced, selecting the dummy bar head (II) with the same shape as the inner hole of a graphite sleeve, inserting the dummy bar head (II) into the inner hole of the graphite sleeve of the crystallizer by adopting the reverse rotation of a traction roller to enable a dummy bar to move reversely and also loosening the upper traction roller, manually reversely pushing the dummy bar to enable the dummy bar head (II) to be inserted into the graphite sleeve of the crystallizer, opening a heating device of a heat preservation furnace, starting to bake the heat preservation furnace and the crystallizer to remove the moisture of a furnace lining material, and baking the furnace lining material to 1200 and 1300 ℃;
step 3, horizontal continuous casting dummy ingot production
Tightly pressing through a front traction upper roller (18), a front traction lower roller (20), clamping a dummy bar through a rear traction upper roller (19) and a rear traction lower roller (21), pouring inoculated gray iron molten iron or nodular iron molten iron subjected to spheroidization and inoculation into a holding furnace, starting a tractor when the molten iron enters a graphite sleeve of a crystallizer and wraps a dummy bar screw (III) for 0.5-1 minute, starting the tractor to enable a traction roller set to rotate intermittently, enabling the dummy bar to move linearly in a pulling-stopping-pulling mode, gradually drawing a cast iron section (IV) out of the graphite sleeve of the crystallizer, opening cooling water of the crystallizer when the molten iron is poured into the holding furnace, detaching a horizontal straight handle pin (4) after a first traction bar (I) leaves the traction roller set, detaching and removing the first traction bar (I), and sequentially detaching other traction bars (I) along with the progress of the dummy bar, finally, screwing down a dummy bar head (II) from the cast iron section, finishing the production of the dummy bar, and continuously producing the cast iron section by self-traction;
the outer contour section size of the dummy bar head (II) is 0.1-0.5 mm smaller than the inner hole section size of the crystallizer graphite sleeve, so that the dummy bar head (II) can be smoothly inserted into the crystallizer graphite sleeve arranged at the lower part of the holding furnace before production.
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| CN113770319B (en) * | 2021-07-26 | 2023-03-10 | 北京科技大学 | Composite dummy bar and method for stainless steel coated carbon steel liquid-solid composite continuous casting |
| CN113869196B (en) * | 2021-09-27 | 2022-04-19 | 中远海运科技股份有限公司 | Vehicle type classification method and device based on laser point cloud data multi-feature analysis |
| CN117380916B (en) * | 2023-12-08 | 2024-02-23 | 成都利华强磁浮连铸科技有限责任公司 | Magnetic suspension continuous casting system and magnetic suspension continuous casting method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE149318C1 (en) * | ||||
| GB1119182A (en) * | 1965-04-01 | 1968-07-10 | Ashmore Benson Pease And Compa | Starting bars for continuous casting |
| US3543833A (en) * | 1967-04-17 | 1970-12-01 | Luigi Danieli | Flexible starting bar for continuous casting plants |
| SU910328A1 (en) * | 1980-02-29 | 1982-03-07 | Предприятие П/Я А-7697 | Metal continuous casting machine dummy bar |
| DE3818795C2 (en) * | 1988-05-26 | 1995-11-09 | Weg Walzwerk Euskirchen Gmbh | Cold strand for a continuous caster |
| JP2531363Y2 (en) * | 1990-11-06 | 1997-04-02 | 川崎重工業株式会社 | Dummy bar |
| CN103418766B (en) * | 2013-07-31 | 2015-04-22 | 中冶连铸技术工程股份有限公司 | Vertical circular billet continuous casting machine dummy bar |
| CN205996141U (en) * | 2016-08-30 | 2017-03-08 | 鞍山市泰和连铸机械有限公司 | A kind of large round billet dummy bar head |
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2018
- 2018-08-02 CN CN201810872080.8A patent/CN109093085B/en active Active
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| CN109093085A (en) | 2018-12-28 |
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