CN116352025A - Method for building refractory pouring cup - Google Patents
Method for building refractory pouring cup Download PDFInfo
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- CN116352025A CN116352025A CN202310527148.XA CN202310527148A CN116352025A CN 116352025 A CN116352025 A CN 116352025A CN 202310527148 A CN202310527148 A CN 202310527148A CN 116352025 A CN116352025 A CN 116352025A
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- pouring cup
- pouring
- sand box
- refractory
- cup
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 244000035744 Hura crepitans Species 0.000 claims abstract description 46
- 239000004568 cement Substances 0.000 claims abstract description 40
- 239000004576 sand Substances 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 14
- 239000002023 wood Substances 0.000 claims description 14
- 238000000137 annealing Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 238000011049 filling Methods 0.000 claims description 9
- 235000014121 butter Nutrition 0.000 claims description 8
- 239000004927 clay Substances 0.000 claims description 8
- 239000003755 preservative agent Substances 0.000 claims description 8
- 230000002335 preservative effect Effects 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000010431 corundum Substances 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 abstract description 10
- 238000005336 cracking Methods 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000011449 brick Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000002245 particle Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000009707 resistance sintering Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The method for building the refractory pouring cup adopts newly-developed refractory cement as a raw material, utilizes the prepared pouring cup die and a pouring cup sand box to build the pouring cup which is integrally formed, overcomes the defects of the pouring cup prepared by the traditional building method and the resin sand molding method, greatly improves the building efficiency of the pouring cup, can be put into use only by 3-4 days, has good use effect, does not remove slag, has less cracking, has the service life which is 5-10 times that of the traditional building bag, has good quality, is durable, and ensures the quality of casting.
Description
Technical Field
The invention belongs to the technical field of casting, and particularly relates to a method for constructing a refractory pouring cup.
Background
The pouring cup for casting is usually built by a masonry method or a resin sand molding method, namely: the refractory brick is built at the bottom and four walls of the pouring cup like building a wall, then alcohol-based paint is painted, if the pouring cup is beaten by resin sand, a special die is needed, and the pouring cup is molded by the resin sand. The pouring cup made of resin sand can generate sand washing phenomenon during pouring, so that the casting sand inclusion risk is caused, and the pouring cup is a disposable pouring cup which is made of resin sand once again.
The pouring cup built by the refractory bricks by adopting the building method is characterized in that refractory bricks are used for being subjected to pouring, and refractory cement on the inner layers of the refractory bricks can fall off due to expansion caused by heat and contraction caused by cold in the use process, so that cast is mixed on one hand, molten iron can infiltrate into gaps among the refractory bricks to enable the refractory bricks to expand integrally, molten iron leakage is caused by collapse, and the gaps among the refractory bricks can be filled with molten iron and can also enable the refractory bricks to crack and fall off slag.
Disclosure of Invention
The invention solves the technical problems that: the method for building the refractory pouring cup adopts newly-developed refractory cement as a raw material, utilizes the prepared pouring cup die and a pouring cup sand box to build the pouring cup which is integrally formed, overcomes the defects of the pouring cup prepared by the traditional building method and the resin sand molding method, greatly improves the building efficiency of the pouring cup, can be put into use only by 3-4 days, has good use effect, does not remove slag, has less cracking, has the service life which is 5-10 times that of the traditional building bag, has good quality, is durable, and ensures the quality of casting.
The invention adopts the technical scheme that: the refractory pouring cup building method comprises the following steps:
1) Preparing fluid special refractory cement for pouring cup construction;
2) Adopting a steel plate with the thickness of 3-5 mm to weld a pouring cup die, processing exhaust holes on the bottom wall of the pouring cup die, enabling the distance between the outer surface of the pouring cup die for preparation and the inner surface of the pouring cup to be prepared to be 90-100 mm, enabling the distance between the outer bottom surface of the pouring cup die and the inner bottom surface of the pouring cup to be prepared to be 150-200 mm, and chamfering each edge of the pouring cup die;
3) Before pouring, cleaning the inside of a pouring cup sand box, attaching asbestos plates with the thickness of 3-5 mm to the inner bottom surface and the inner side wall of the pouring cup sand box, coating butter on the outer surface of a pouring cup die, and wrapping one to three layers of preservative films;
4) During pouring, firstly filling refractory cement with the thickness of 150-200 mm into the bottom of the pouring cup sand box, wherein the refractory cement filled in the pouring cup sand box avoids a water gap part on the bottom surface of the pouring cup sand box, putting a pouring cup die into the pouring cup sand box, slightly sinking the bottom surface of the pouring cup die into the refractory cement on the bottom of the pouring cup sand box, knocking the bottom of the pouring cup die to vibrate the bottom of the pouring cup die, so that redundant refractory cement and gas on the bottom of the pouring cup sand box overflows from air outlet holes on the bottom of the pouring cup die, then filling the refractory cement layer by layer in an area between the pouring cup sand box and the peripheral side walls of the pouring cup die, and repeatedly vibrating by using a vibrating rod until the refractory cement is filled;
5) After pouring is completed and refractory cement is completely solidified, taking the pouring cup die out of the pouring cup sand box, putting the built pouring cup into an annealing furnace for baking treatment, after baking, slowly cooling to 80 ℃ in the annealing furnace, discharging and air cooling to room temperature, then brushing carbon powder paint on the inner wall of the pouring cup, after the paint is dried out, placing square wood blocks with the draft angle of 5 degrees at the water gap position in the pouring cup, wherein the gaps between the side walls of the periphery of the square wood blocks and the inner wall of the corresponding side of the pouring cup are 50-60 mm, filling resin sand in the area between the side wall of the water gap at the bottom of the pouring cup and the outer wall of the wood blocks, and taking out the wood blocks after the resin sand is solidified.
In the step 1), the refractory cement is prepared from the following components in percentage by weight: 20% of quartz stone with the diameter of 3-5 mm, 30% of corundum powder, 30% of high-silicon clay powder, 5% of limestone with the diameter of 3-5 mm and 15% of bentonite, and mixing and stirring the components according to the proportion of adding 300-400L of water into each ton of mixture to obtain the concrete fluid.
In the step 2), the bottom surface of the pouring cup mold is provided with a slot mold communicated with the inner cavity, the outer contour of the slot mold is matched with a water gap hole on the bottom surface of the pouring cup sand box, and the upper end of the pouring cup mold is fixedly provided with a positioning rod and is matched with the pouring cup mold in the pouring cup sand box to be supported and positioned through the positioning rod arranged on the upper box edge of the pouring cup sand box.
Further, reinforcing rods are arranged at the inner corner positions of the pouring cup die, and two ends of each reinforcing rod are fixedly connected with the corresponding side inner walls of the pouring cup die respectively.
The pouring cup is integrally baked in the annealing furnace during baking treatment, and the baking temperature is 1000-1200 ℃ and the baking time is about 24 hours.
In the step 5), the cooling speed of the pouring cup in the process of slowly cooling to 80 ℃ in the annealing furnace is less than 100 ℃/h.
Compared with the prior art, the invention has the advantages that:
1. according to the technical scheme, newly developed refractory cement is used as a raw material, and the prepared pouring cup mold and the pouring cup sand box are used for building the pouring cup which is integrally formed, so that the defects of the pouring cup prepared by the traditional building method and the resin sand molding method are overcome, the pouring cup can be put into use only in 3-4 days, and the building efficiency of the pouring cup is greatly improved;
2. the pouring cup with the optimized refractory cement is high-temperature resistant and corrosion resistant, the heat loss of the pouring cup can be effectively reduced, the pouring cup die with the outer wall coated with butter and wrapped with 1-3 layers of preservative films is convenient to demould, and the surface quality of the pouring cup is ensured;
3. the pouring cup built by the technical scheme has good use effect, no slag drop, no gas generation and less cracking, has the service life which is 5-10 times that of the traditional pouring ladle, has good quality and durability, and ensures the quality of casting.
Drawings
FIG. 1 is a schematic diagram of a pouring cup mold structure of the present invention;
FIG. 2 is a schematic view of the structure of the pouring cup mold of the present invention when it is mated with a pouring cup flask.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1-2 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The refractory pouring cup building method comprises the following steps:
1) Preparing fluid special refractory cement for pouring cup construction; the refractory cement comprises the following components in percentage by weight during preparation: 20% of quartz stone with the particle size of over 200 meshes and 30% of corundum powder, 30% of high-silicon clay powder, 5% of limestone with the particle size of 3-5 mm and 15% of bentonite are mixed, and then mixed and stirred into concrete fluid according to the proportion of adding 300-400L of water into each ton of mixture, wherein the mixture of the silica sand powder with the particle size of over 200 meshes and the clay powder is called high-silicon clay, the proportion of the silica sand powder is about 20%, and the clay powder is about 80%; quartz stone with granularity of 3-5 mm is similar to stones in reinforced concrete, and plays a role in reducing shrinkage and preventing cracking in the process of thermal expansion and cold contraction; the corundum powder mainly plays a role in fire resistance, and the quartz powder in the high-silicon clay powder plays a role in fire resistance sintering; the clay powder and the bentonite play a role in bonding, and the limestone plays a role in improving the curing rate, so that the special refractory cement with the proportion has good high temperature resistance and cracking resistance;
2) Adopting a steel plate with the thickness of 3-5 mm to weld a pouring cup mould 1, and processing an exhaust hole 2 on the bottom wall of the pouring cup mould 1, so that the distance between the outer surface of the pouring cup mould 1 for preparation and the inner surface of a pouring cup to be prepared is 90-100 mm, the distance between the outer bottom surface of the pouring cup mould 1 and the inner bottom surface of the pouring cup to be prepared is 150-200 mm, and chamfering the edges of the pouring cup mould 1; specifically, the bottom surface of the pouring cup mold 1 is provided with a slot mold 4 communicated with the inner cavity, the outer contour of the slot mold 4 is matched with a water gap hole on the bottom surface of the pouring cup sand box 3, the upper end of the pouring cup mold 1 is fixedly provided with a positioning rod 5, and the pouring cup mold 1 matched in the pouring cup sand box 3 is supported and positioned through the positioning rod 5 arranged on the upper box edge of the pouring cup sand box 3; specifically, a reinforcing rod 6 is arranged at the inner corner position of the pouring cup mold 1, and two ends of the reinforcing rod 6 are fixedly connected with the inner wall of the corresponding side of the pouring cup mold 1 respectively, as shown in fig. 1;
3) Before pouring, cleaning the inside of a pouring cup sand box 3, attaching asbestos plates with the thickness of 3-5 mm to the inner bottom surface and the inner side wall of the pouring cup sand box 3, coating butter on the outer surface of a pouring cup die 1, and wrapping one to three layers of preservative films; in the technical characteristics, the outer wall and the bottom of the pouring cup sand box 3 are provided with a plurality of exhaust holes, and the pouring cup sand box 3 and the refractory cement can be prevented from being deformed and cracked when the refractory cement flows out and is baked at high temperature by attaching the asbestos plate; butter coating and one to three layers of preservative films wrapping function: the butter mainly plays a role of adhering the preservative film, the preservative film mainly plays a role of isolating the pouring cup die 3 from the refractory cement, and the pouring cup die is conveniently taken out after the refractory cement is solidified, so that the refractory cement can be polluted if the butter is directly used;
4) During pouring, firstly filling refractory cement with the thickness of 150-200 mm into the bottom of the pouring cup sand box 3, wherein the refractory cement filled in the pouring cup sand box 3 avoids a water gap part at the bottom surface of the pouring cup sand box 3, putting the pouring cup mould 1 into the pouring cup sand box 3, slightly sinking the bottom surface of the pouring cup mould 1 into the refractory cement at the bottom of the pouring cup sand box 3, knocking the bottom of the pouring cup mould 1 to enable redundant refractory cement and gas at the bottom of the pouring cup sand box 3 to overflow from the air outlet holes 2 at the bottom of the pouring cup mould 1, then filling refractory cement layer by layer in the area between the pouring cup sand box 3 and the peripheral side walls of the pouring cup mould 1, repeatedly vibrating by using a vibrating rod until the refractory cement is filled, and after the pouring cup mould is matched with the pouring cup sand box, as shown in fig. 2;
5) After pouring is completed and the refractory cement is completely solidified, taking the pouring cup mould 1 out of the pouring cup sand box 3, putting the built pouring cup into an annealing furnace for baking treatment, after baking, slowly cooling to 80 ℃ in the annealing furnace, discharging and air-cooling to room temperature, and then brushing carbon powder paint on the inner wall of the pouring cup, wherein the pouring cup mould has a refractory protection function and prolongs the service life of the pouring cup; secondly, molten iron is prevented from being directly stuck on the inner wall of the pouring cup when the pouring cup is used; thirdly, the pouring cup is convenient to clean after being used; after the paint is thoroughly dried, placing square wood blocks with the circumferential draft angle of 5 degrees at the water gap position in the pouring cup, wherein the gaps between the peripheral side walls of the square wood blocks and the inner walls of the corresponding sides of the pouring cup are 50-60 mm, filling resin sand in the area between the water gap side walls at the bottom of the pouring cup and the outer walls of the wood blocks, taking out the wood blocks after the wood blocks are solidified, using the wood blocks, wherein the water gap position of the pouring cup mould 1 has an upward draft angle of 5 degrees, if the pouring cup has residual molten iron in the pouring cup which is retained at the water gap position and is connected with a casting during use, the pouring cup cannot be separated from the casting after solidification, the water gap position adopts the resin sand, the resin sand is dispersed after pouring, and the space expansion of the water gap position is convenient for taking out the iron blocks at the water gap position, so that the pouring cup is convenient to be separated from the casting; specifically, the pouring cup is integrally baked in the annealing furnace during baking treatment, and the baking temperature is 1000-1200 ℃ and the baking time is about 24 hours; specifically, the cooling speed of the pouring cup is less than 100 ℃/h in the process of slowly cooling the pouring cup to 80 ℃ in the annealing furnace.
According to the technical scheme, newly developed refractory cement is used as a raw material, and the prepared pouring cup die 1 and the pouring cup sand box 3 are utilized to construct the pouring cup which is integrally formed, so that the defects of the pouring cup prepared by the traditional masonry method and the resin sand molding method are overcome, the pouring cup can be put into use only in 3-4 days, and the pouring cup constructing efficiency is greatly improved; the optimized refractory cement is high-temperature resistant and corrosion resistant, the built pouring cup can effectively reduce heat loss, the pouring cup die 1 with the outer wall coated with butter and wrapped with 1-3 layers of preservative films is convenient for demoulding, and the surface quality of the pouring cup is ensured; the pouring cup has good use effect, no slag drop, less cracking and 5-10 times longer service life than the traditional pouring cup, good quality, durability and capability of ensuring the quality of casting.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The refractory pouring cup building method is characterized by comprising the following steps of:
1) Preparing fluid special refractory cement for pouring cup construction;
2) Adopting a steel plate with the thickness of 3-5 mm to weld a pouring cup mould (1), processing an exhaust hole (2) on the bottom wall of the pouring cup mould (1), enabling the distance between the outer surface of the pouring cup mould (1) for preparation and the inner surface of the pouring cup to be prepared to be 90-100 mm, enabling the distance between the outer bottom surface of the pouring cup mould (1) and the inner bottom surface of the pouring cup to be prepared to be 150-200 mm, and chamfering each edge of the pouring cup mould (1);
3) Before pouring, cleaning the inside of a pouring cup sand box (3), attaching asbestos plates with the thickness of 3-5 mm to the inner bottom surface and the inner side wall of the pouring cup sand box (3), coating butter on the outer surface of a pouring cup die (1), and wrapping one to three layers of preservative films;
4) During pouring, firstly filling refractory cement with the thickness of 150-200 mm into the bottom of the pouring cup sand box (3), wherein the refractory cement filled into the pouring cup sand box (3) avoids a water gap part on the bottom surface of the pouring cup sand box (3), putting the pouring cup mould (1) into the pouring cup sand box (3), slightly sinking the bottom surface of the pouring cup mould (1) into the refractory cement on the bottom of the pouring cup sand box (3), knocking the bottom of the pouring cup mould (1) to enable redundant refractory cement and gas at the bottom of the pouring cup sand box (3) to overflow from an air outlet hole (2) on the bottom of the pouring cup mould (1), and then filling the refractory cement layer by layer in an area between the pouring cup sand box (3) and the peripheral side wall of the pouring cup mould (1), and repeatedly vibrating until the refractory cement is filled by using a vibrating rod;
5) After pouring is completed and refractory cement is completely solidified, taking the pouring cup die (1) out of the pouring cup sand box (3), putting the built pouring cup into an annealing furnace for baking treatment, after baking, slowly cooling to 80 ℃ in the annealing furnace, discharging and air cooling to room temperature, then coating carbon powder paint on the inner wall of the pouring cup, after the paint dries out, placing square wood blocks with the draft angle of 5 degrees at the water gap position in the pouring cup, wherein gaps between the side walls of the periphery of the square wood blocks and the inner wall of the corresponding side of the pouring cup are 50-60 mm, filling resin sand in the area between the side wall of the water gap at the bottom of the pouring cup and the outer wall of the wood blocks, and taking out the wood blocks after the resin sand is solidified.
2. The method of constructing a refractory tundish according to claim 1, wherein: in the step 1), the refractory cement is prepared from the following components in percentage by weight: 20% of quartz stone with the diameter of 3-5 mm, 30% of corundum powder, 30% of high-silicon clay powder, 5% of limestone with the diameter of 3-5 mm and 15% of bentonite, and mixing and stirring the components according to the proportion of adding 300-400L of water into each ton of mixture to obtain the concrete fluid.
3. The method of constructing a refractory pouring cup according to claim 1, wherein: in the step 2), a groove mold (4) communicated with the inner cavity is arranged on the bottom surface of the pouring cup mold (1), the outer contour of the groove mold (4) is matched with a water gap hole on the bottom surface of the pouring cup sand box (3), a positioning rod (5) is fixed at the upper end of the pouring cup mold (1) and is matched with the pouring cup mold (1) in the pouring cup sand box (3), and the pouring cup mold (1) is supported and positioned by the positioning rod (5) arranged on the upper box edge of the pouring cup sand box (3).
4. A method of constructing a refractory tundish according to claim 3, wherein: reinforcing rods (6) are arranged at the inner corners of the pouring cup mould (1), and two ends of each reinforcing rod (6) are fixedly connected with the corresponding side inner walls of the pouring cup mould (1) respectively.
5. The method of constructing a refractory pouring cup according to claim 1, wherein: in the step 5), the pouring cup is integrally baked in the annealing furnace during the baking treatment, and the baking temperature is 1000-1200 ℃ and the baking time is about 24 hours.
6. The method of constructing a refractory pouring cup according to claim 1 or 2 or 3 or 4 or 5, wherein: in the step 5), the cooling speed of the pouring cup in the process of slowly cooling to 80 ℃ in the annealing furnace is less than 100 ℃/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310527148.XA CN116352025A (en) | 2023-05-11 | 2023-05-11 | Method for building refractory pouring cup |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310527148.XA CN116352025A (en) | 2023-05-11 | 2023-05-11 | Method for building refractory pouring cup |
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| Publication Number | Publication Date |
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| CN116352025A true CN116352025A (en) | 2023-06-30 |
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|---|---|---|---|
| CN202310527148.XA Pending CN116352025A (en) | 2023-05-11 | 2023-05-11 | Method for building refractory pouring cup |
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| CN (1) | CN116352025A (en) |
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- 2023-05-11 CN CN202310527148.XA patent/CN116352025A/en active Pending
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