CN103789492B - The replacing options of the exterior bottom-blown air brick of a kind of ladle - Google Patents
The replacing options of the exterior bottom-blown air brick of a kind of ladle Download PDFInfo
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- CN103789492B CN103789492B CN201410046308.XA CN201410046308A CN103789492B CN 103789492 B CN103789492 B CN 103789492B CN 201410046308 A CN201410046308 A CN 201410046308A CN 103789492 B CN103789492 B CN 103789492B
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- permeable brick
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Abstract
The present invention relates to the replacing options of the exterior bottom-blown air brick of a kind of ladle, mainly comprise: (1) adopts centering locate moulds to install brick cup: brick cup installation site, centering locate moulds location, ensure brick cup and hold-down mechanism right alignment, thus ensure gas permeable brick and hold-down mechanism substrate right alignment; (2) install gas permeable brick: after chamotte smeared by gas permeable brick, setting tool is inserted gas permeable brick air inlet steel pipe, and level inserts brick cup hole, ensures brick cup and gas permeable brick right alignment; (3) take out gas permeable brick: first pass into low temperature compressed air, then take out gas permeable brick by hollow piston hydraulic ram.The method uses special tool accurate location and installation when gas permeable brick is installed, and accurately aligns, and can extract gas permeable brick fast outside ladle, avoids several workman and toils on for a long time in hot environment, improve operating safety factor, improve working efficiency.
Description
Technical field
The present invention relates to the replacing options of the exterior bottom-blown air brick of a kind of ladle.
Background technology
Be used in steelmaking process storing the ladle of molten steel, be used as refined molten steel container more and more, such as in the refining processs such as vacuum argon blowing stove (VD), vacuum Ar-O_2 furnace (VOD), vacuum refinement (RH), ladle furnace (LF), all need to be blown into rare gas element argon gas from ladle bottom.Being blown into the gas permeable brick of argon gas generally all by being arranged on ladle bottom is blown in molten steel, gas permeable brick shape is taper type, the threaded steel pipe of its bottom belt inserts breathable refractory materials, one deck stainless steel sheet is wrapped up outside refractory materials, the effect of steel pipe bottom thread connects outside to be blown into gas piping, surface stainless steel plate is to ensure gas permeable brick physical dimension precision, gas permeable brick is closely cooperated with the brick cup hole of location gas permeable brick, smears colloidality chamotte when installing between the brick cup contact surface of gas permeable brick and location gas permeable brick and make it firm.Brick cup profile is rectangular parallelepiped, and center is the taper type cavity matched with gas permeable brick, and brick cup act as location gas permeable brick, and forms ladle bottom high-temperature resistant inner lining with other rectangular parallelepiped refractory brick.
Gas permeable brick has built in type and fitted outside two kinds, and built in type gas permeable brick is arranged in brick cup, and the ladle box hat place of corresponding steel pipe position opens the aperture that a steel pipe passes through, and steel tube screw thread stretches out outside ladle and connects work with argon gas source pipeline.The life-span of ladle integral refractory lining is far longer than the life-span of gas permeable brick, generally be the 4-5 of gas permeable brick doubly, like this in a ladle furnace labour, need to change 3-4 gas permeable brick, need ladle to cool, change gas permeable brick and brick cup during replacing, then baking could normally use, have a strong impact on the overall refractory lining work-ing life of ladle like this, add energy consumption, reduce ladle service efficiency, be forced to the total quantity increasing ladle, add operation cost undoubtedly.Fitted outside bottom-blown air brick solves the problems referred to above preferably, a hole slightly larger than gas permeable brick diameter is opened in ladle shell gas permeable brick position, by a hold-down mechanism location fixed ventilation brick, after gas permeable brick terminates work-ing life, open hold-down mechanism, take out old gas permeable brick, after new gas permeable brick is installed, again compresses and can continue to use.
The mounting means of exterior bottom-blown air brick also has problems and is, mainly gas permeable brick takes out comparatively difficulty, general is all that ladle is lain in ground, utilize its taper type profile, after centering inside ladle, gas permeable brick is clashed into comparatively long pole, make the cracked disengaging brick cup of colloidality chamotte between gas permeable brick and brick cup, drop outside ladle.Because ladle is comparatively dark, ladle temperature is higher again, so rod member must have higher high temperature strength and rigidity, weight is comparatively large, needs many people to operate; Simultaneously centering difficulty, also needs long-time centering to attempt impacting, and often occurs breaking the situation of brick cup around gas permeable brick or other refractory linings.Also have and use hydraulic impact device centering gas permeable brick to clash into removing method, due to impact bar limitation of length, hydraulic efficiency installation enters in the ladle of high temperature, as easy as rolling off a logly burns out sealing piece for pipe fittings, damage equipment, the taking-up difficulty of gas permeable brick, become the development of restriction exterior bottom-blown air brick bottleneck.Simultaneously owing to being difficult to precise alignment when installing brick cup, gas permeable brick, there is chamotte and smear irregular, under molten steel impacts immersion, increase the hidden danger that gas permeable brick comes off.
Summary of the invention
In order to overcome above-mentioned deficiency, the present invention aims to provide the replacing options of the exterior bottom-blown air brick of a kind of ladle, by using centering orientation tool accurate location and installation when gas permeable brick is installed, use special-purpose taking to go out instrument accurately to align, gas permeable brick is extracted fast outside ladle, avoid several workman to toil on for a long time in hot environment, improve operating safety factor, improve working efficiency.
The replacing options of the exterior bottom-blown air brick of a kind of ladle provided by the invention, is characterized in that: comprise the following steps:
(1) adopt centering locate moulds that brick cup is installed: brick cup installation site, centering locate moulds location, ensures brick cup and hold-down mechanism right alignment, thus ensure gas permeable brick and hold-down mechanism substrate right alignment;
Adopt centering locate moulds, using hold-down mechanism substrate as benchmark, by centering locate moulds shape and hold-down mechanism substrate, the coordinating of brick cup profile, accurate position of locating brick cup; When gas permeable brick is installed in brick cup, the relative hold-down mechanism substrate in position is fixed, and makes gas permeable brick plummet and plane orthogonal;
(2) gas permeable brick is installed:
Ladle is kept flat, after chamotte smeared by gas permeable brick, setting tool is inserted gas permeable brick air inlet steel pipe, setting tool comprises frustum and steel pipe, frustum and the T-shaped setting of steel pipe, frustum is near gas permeable brick bottom surface, and level inserts brick cup hole, the frustum conical surface closely cooperates mutually with brick cup hole lower taper, ensure that the right alignment of brick cup and gas permeable brick.
(3) gas permeable brick is taken out:
1. the pressurized air of relative low temperature is first blown into, the relative brick cup cooling of gas permeable brick that will dismantle is shunk, concrete operation method is: connect compressed air line, be blown into 1-5 minute pressurized air in gas permeable brick, pressure position 3-6bar pressurized air enters gas permeable brick by steel pipe, evenly enters ladle by gas permeable brick; The relative brick cup cooling of gas permeable brick that will dismantle is shunk;
2. hollow piston hydraulic ram is used, based on hold-down mechanism substrate, cylinder piston rod is used to be inserted in steel pipe bottom gas permeable brick, upper cover is positioned over hold-down mechanism pedestal, and internal thread disk is screwed on gas permeable brick bottom steel gas thread, and disk is near contact cylinder piston rod, hydraulic oil pump is used to pass into pressure oil to oil cylinder, piston rod promotes internal thread disk under pressure, and internal thread disk pulls gas permeable brick by screw thread pair, thus gas permeable brick is extracted from brick cup.
Further, the upper end of described centering locate moulds is taper type, and size matches with brick cup hole lower taper, and mould stage casing is identical with hold-down mechanism substrate thread root diameter, the upper surface ring part of bottom cylinder and hold-down mechanism baseplate-laminating.
Further, described setting tool is divided into two portions, the frustum with an aperture centered by front end, and rear end is steel pipe, and frustum matches with brick cup hole lower taper, and centre hole is identical with setting tool pipe diameter, is greater than gas permeable brick air inlet steel pipe.
Further, described hydraulic ram comprises cylinder barrel, and the internal thread disk coordinated with gas permeable brick air inlet steel tube screw thread, and be steel pipe in the middle of its cylinder barrel, cylinder barrel is up and down respectively into and out of hydraulic fluid port; Oil cylinder upper and lower covers shape and structure is identical, requires that surfacing is bright and clean, and upper and lower covers centre hole is coordinated with oil cylinder piston by sealing-ring, and its piston rod is also that a diameter is slightly larger than the steel pipe bottom gas permeable brick; Disk internal thread coordinates with gas permeable brick bottom steel gas thread.
The exterior bottom blowing principle of work of ladle: bottom blowing brick cup is arranged in the middle of ladle refractory lining, gas permeable brick is arranged in brick cup by chamotte, and hold-down mechanism substrate is weldingly fixed on ladle outer casing bottom central position, and substrate is a hollow circular ring dish, inner ring is internal thread, coordinates with spiral hold-down mechanism.Require through machining surface processing on the downside of substrate, as a reference plane, for locating miscellaneous equipment, spiral hold-down mechanism is for compressing location bottom blowing brick.Adjustment packing ring is for adjusting the distance between spiral hold-down mechanism and gas permeable brick.External argon gas pipeline is connected with gas permeable brick by gas source pipe pipeline connector and air inlet steel pipe.External rare gas element stirs molten steel wherein as argon gas is blown into ladle by pipeline, gas permeable brick.
Of the present invention
beneficial effect:
(1) innovative design of the present invention brick cup centering locate moulds, setting tool, cooling gas permeable brick method, special-purpose taking goes out hydraulic ram, make the installation of gas permeable brick, take out more convenient, quick;
(2) use special tool accurate location and installation when gas permeable brick is installed, accurately align, and gas permeable brick can be extracted fast outside ladle, avoid several workman and toil on for a long time in hot environment, improve operating safety factor, improve working efficiency.
Accompanying drawing explanation
Fig. 1 is ladle bottom blowing fundamental diagram.
Fig. 2 is brick cup localization method schematic diagram.
Fig. 3 is exterior bottom-blown air brick method schematic diagram.
Fig. 4 is gas permeable brick removing method schematic diagram.
In figure, 1 is ladle housing, and 2 is brick cup, and 3 is gas permeable brick stainless steel sheet| and chamotte, and 4 is gas permeable brick, 5 is ladle refractory lining, and 6 is gas permeable brick air inlet steel pipe, and 7 is argon gas pipeline, 8 is adjustment packing ring, and 9 is spiral hold-down mechanism, and 10 is hold-down mechanism substrate, 11 is centering locate moulds, and 12 is setting tool frustum, and 13 is setting tool steel pipe, 14 is oil cylinder upper cover, and 15 is oil cylinder lower cover, and 18 is oil-in, 19 is oil outlet, and 16 is cylinder piston rod, and 17 is internal thread disk.
Embodiment
Further illustrate the present invention below by embodiment, but be not limited to following examples.
Embodiment 1:
1, the exterior bottom blowing principle of work of ladle
Fig. 1 is ladle exterior bottom blowing principle of work schematic diagram, and bottom blowing brick cup 2 is arranged in the middle of ladle refractory lining 5, and gas permeable brick 4 is arranged in brick cup by chamotte, and adjustment packing ring 8 is for adjusting the distance between spiral hold-down mechanism 9 and gas permeable brick 4.Spiral hold-down mechanism 9 is for compressing location bottom blowing brick.Hold-down mechanism substrate 10 is weldingly fixed on ladle shell 1, and hold-down mechanism substrate 10 is a hollow circular ring dish, and inner ring is internal thread, coordinates with spiral hold-down mechanism 9.Require through machining surface processing on the downside of hold-down mechanism substrate 10, as a reference plane, for locating miscellaneous equipment.External argon gas pipeline 7, is connected with gas permeable brick 4 by gas permeable brick air inlet steel pipe 6.External rare gas element stirs molten steel wherein as argon gas is blown into ladle by pipeline, gas permeable brick.
2, brick cup localization method explanation
Fig. 2 is brick cup localization method schematic diagram, 11 is centering locate moulds, and this mould upper end is taper type, and size matches with brick cup hole lower taper, stage casing is identical with hold-down mechanism base thread internal diameter, the upper surface ring part of bottom cylinder and hold-down mechanism baseplate-laminating.When brick cup is installed, centering locate moulds 11 and hold-down mechanism substrate 10 reference plane are fitted, insert gas permeable brick hole, brick cup 2 is loaded inside ladle, brick cup centering locate moulds 11 is inserted in brick cup hole, this ensures that there the right alignment of brick cup 2 and hold-down mechanism, also just ensure that the right alignment of bottom-blown air brick 4 and brick cup 2, the parallelism of downward force direction and gas permeable brick when gas permeable brick 4 is extracted with hold-down mechanism substrate 10 reference plane common guarantee.Build periphery refractory lining behind location by laying bricks or stones, ensure that brick cup position is fixed.
When installing brick cup, centering locate moulds 11 is inserted in brick cup hole, and frustum and brick cup hole engagement height are 100mm.
3, gas permeable brick installation method
Fig. 3 is gas permeable brick setting tool using method schematic diagram, setting tool is divided into two portions, setting tool frustum 12 with an aperture centered by front end, rear end is setting tool steel pipe 13, setting tool frustum 12 matches with brick cup hole lower taper, centre hole is identical with setting tool steel pipe 13 internal diameter, slightly larger than gas permeable brick air inlet steel pipe 6.When gas permeable brick is installed, general is all that ladle keeps flat, after chamotte smeared by gas permeable brick, setting tool is inserted gas permeable brick air inlet steel pipe 6 as shown in the figure, and frustum is near gas permeable brick bottom surface, and level inserts brick cup hole, the frustum conical surface closely cooperates mutually with brick cup hole lower taper, this ensure that the right alignment of brick cup and gas permeable brick, make the unlikely extruding of chamotte irregular, be difficult to come off.External argon gas pipeline 7 to be connected with gas permeable brick 4 by gas permeable brick air inlet steel pipe 6 and to be blown into ladle rare gas element argon gas.
4. gas permeable brick removing method
Take out when ladle rolls off the production line replacing gas permeable brick with reference to figure 1 gas permeable brick, after the inner evacuation molten steel of ladle, ladle refractory lining 5 and brick cup 2, gas permeable brick 4 are red heat state, and access pressurized air is blown into gas permeable brick.Connect compressed air line, be blown into 1-5 minute pressurized air in gas permeable brick, pressure is that 3 ~ 6bar pressurized air enters gas permeable brick by steel pipe, evenly enter ladle by gas permeable brick, drained by ladle cavity, pressurized air takes away partial heat in gas permeable brick, the brick cup temperature of its periphery reduces relatively, due to the relative cooling shrinkage of gas permeable brick, the fragility chamotte meeting partial rupture in brick cup and gas permeable brick gap, even produce gap, the resistance taking out gas permeable brick like this can greatly reduce, and sometimes even directly comes off.
Fig. 4 is that air brick of steel ladle takes out principle of work schematic diagram, after pressure-air cooling, close source of the gas, pull down gas source connector, take out spiral hold-down mechanism and pad, design and produce special tool and take out gas permeable brick, special tool comprises a kind of specially designed oil cylinder, and an internal thread disk coordinated with gas permeable brick bottom steel gas thread.Oil cylinder principle of design is as shown in the figure, and be steel pipe in the middle of its cylinder barrel, cylinder barrel has oil-in 18, oil outlet 19 up and down; Oil cylinder upper cover 14 is identical with lower cover 15 shape and structure, requires that surfacing is bright and clean, and upper and lower covers centre hole is coordinated with oil cylinder piston by sealing-ring, and cylinder piston rod 16 internal diameter is greater than steel pipe 1mm bottom gas permeable brick.Thickness is that the internal thread disk internal thread gas permeable brick bottom steel gas thread of 30mm coordinates, and external diameter is close with special-purpose hydraulic cylinder piston rod external diameter.During use, remove and open and close hold-down mechanism, cylinder piston rod is inserted in gas permeable brick air inlet steel pipe 6, upper cover 14 contacts with hold-down mechanism substrate 10, internal thread disk 17 is screwed on gas permeable brick air inlet steel pipe 6 screw thread, disk is near contact cylinder piston rod 16, oil cylinder oil inlet mouth 18 connects the external world, connect hydraulic oil pump, oil cylinder oil outlet 19 connects external fuel tank, hydraulic hand-pump is used to pass into 5MPa pressure oil to cylinder upper cavity oil, cylinder piston rod 16 promotes internal thread disk 17 under pressure, internal thread disk 17 pulls gas permeable brick by screw thread pair, thus gas permeable brick is extracted from brick cup.
Claims (5)
1. a replacing options for the exterior bottom-blown air brick of ladle, is characterized in that: comprise the following steps:
(1) adopt centering locate moulds that brick cup is installed: brick cup installation site, centering locate moulds location, ensures brick cup and hold-down mechanism right alignment, thus ensure gas permeable brick and hold-down mechanism substrate right alignment;
(2) install gas permeable brick: after chamotte smeared by gas permeable brick, setting tool is inserted gas permeable brick air inlet steel pipe, and level inserts brick cup hole, ensures brick cup and gas permeable brick right alignment;
(3) take out gas permeable brick: the pressurized air being 1. first blown into relative low temperature, the relative brick cup cooling of gas permeable brick that dismantle is shunk; Concrete operation method is: connect compressed air line, be blown into 1-5 minute pressurized air in gas permeable brick, pressure position 3-6bar pressurized air enters gas permeable brick by steel pipe, evenly enters ladle by gas permeable brick; 2. use hollow piston hydraulic ram, based on hold-down mechanism substrate, the disk that piston rod coordinates with promotion gas permeable brick steel tube screw thread takes out gas permeable brick.
2. the replacing options of the exterior bottom-blown air brick of ladle according to claim 1, it is characterized in that: the upper end of described centering locate moulds is taper type, size matches with brick cup hole lower taper, mould stage casing is identical with hold-down mechanism substrate thread root diameter, the upper surface ring part of bottom cylinder and hold-down mechanism baseplate-laminating.
3. the replacing options of the exterior bottom-blown air brick of ladle according to claim 1, it is characterized in that: described setting tool is divided into two portions, frustum with an aperture centered by front end, rear end is steel pipe, frustum matches with brick cup hole lower taper, centre hole is identical with setting tool pipe diameter, is greater than gas permeable brick air inlet steel pipe.
4. the replacing options of the exterior bottom-blown air brick of ladle according to claim 1, it is characterized in that: described hydraulic ram comprises cylinder barrel, and the internal thread disk to coordinate with gas permeable brick air inlet steel tube screw thread, be steel pipe in the middle of its cylinder barrel, cylinder barrel is up and down respectively into and out of hydraulic fluid port; Oil cylinder upper and lower covers shape and structure is identical, requires that surfacing is bright and clean, and upper and lower covers centre hole is coordinated with oil cylinder piston by sealing-ring, and its piston rod is that a diameter is slightly larger than the steel pipe bottom gas permeable brick; Disk internal thread coordinates with gas permeable brick bottom steel gas thread.
5. the replacing options of the exterior bottom-blown air brick of the ladle according to any one of claim 1 ~ 4, is characterized in that: comprise the following steps:
(1) centering locate moulds is adopted, using hold-down mechanism substrate as benchmark, by centering locate moulds shape and hold-down mechanism substrate, the coordinating of brick cup profile, accurate position of locating brick cup; When gas permeable brick is installed in brick cup, the relative hold-down mechanism substrate in position is fixed, and makes gas permeable brick plummet and plane orthogonal;
(2) gas permeable brick is installed:
Ladle is kept flat, after chamotte smeared by gas permeable brick, setting tool is inserted gas permeable brick air inlet steel pipe, setting tool comprises frustum and steel pipe, frustum and the T-shaped setting of steel pipe, frustum is near gas permeable brick bottom surface, and level inserts brick cup hole, the frustum conical surface closely cooperates mutually with brick cup hole lower taper, ensure that the right alignment of brick cup and gas permeable brick;
(3) gas permeable brick is taken out:
1. be first blown into the pressurized air of relative low temperature, connect compressed air line, be blown into 1-5 minute pressurized air in gas permeable brick, pressure position 3-6bar pressurized air enters gas permeable brick by steel pipe, evenly enters ladle by gas permeable brick; The relative brick cup cooling of gas permeable brick that will dismantle is shunk;
2. hydraulic ram is used, based on hold-down mechanism substrate, cylinder piston rod is used to be inserted in steel pipe bottom gas permeable brick, upper cover is positioned over hold-down mechanism pedestal, and internal thread disk is screwed on gas permeable brick bottom steel gas thread, and disk is near contact cylinder piston rod, hydraulic oil pump is used to pass into pressure oil to oil cylinder, piston rod promotes internal thread disk under pressure, and internal thread disk pulls gas permeable brick by screw thread pair, thus gas permeable brick is extracted from brick cup.
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| CN201410046308.XA CN103789492B (en) | 2014-02-10 | 2014-02-10 | The replacing options of the exterior bottom-blown air brick of a kind of ladle |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104819645B (en) * | 2015-04-21 | 2016-08-24 | 陕西阳光雨生态科技有限公司 | A kind of split type air brick and installation method thereof |
| CN105397076B (en) * | 2015-12-31 | 2018-04-17 | 保定安保能冶金设备有限公司 | A kind of molten aluminum tundish for being conveniently replaceable deaerated brick |
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| CN201030434Y (en) * | 2007-06-08 | 2008-03-05 | 武汉钢铁(集团)公司 | Ladle outer-loading air brick hot drawing apparatus |
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