CN102672808B - Composite mould for manufacturing casting fireproof materials - Google Patents
Composite mould for manufacturing casting fireproof materials Download PDFInfo
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- CN102672808B CN102672808B CN201210184412.6A CN201210184412A CN102672808B CN 102672808 B CN102672808 B CN 102672808B CN 201210184412 A CN201210184412 A CN 201210184412A CN 102672808 B CN102672808 B CN 102672808B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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Abstract
The invention relates to a composite mould for manufacturing casting fireproof materials. The composite mould comprises a mould body and a feeder head, wherein the mould body is arranged in a thermal insulation can, and jolt-rammed thermal insulation materials are filled in the thermal insulation can. A transition plate is arranged between the feeder head and the mould body, a thermal insulation cover is arranged on the periphery of the feeder head, dry sand is filled in the thermal insulation cover, and the mould body is obtained through a negative pressure forming process. The composite mould well overcomes the shortcomings of easy crush and crack of finished products caused by the fact that the negative pressure forming process is applied to the process of fireproof material casting. The composite mould is applied to manufacturing of the casting fireproof materials, is energy-saving and environment-friendly and improves appearance quality of the finished products.
Description
Technical field
The invention belongs to the technical field of castable refractory, more particularly, the present invention relates to a kind of composite die of producing castable refractory.
Background technology
Casting refractory material product is the important inner lining materials of glass industry melting furnaces, and the model of castable refractory production and application mainly contains 3 kinds of the quartz sand sand mo(u)ld of graphite mo(u)ld, resin-bonded and the quartz sand sand mo(u)lds of waterglass combination at present.The expensive difficulty of processing of graphite mo(u)ld is large; The quartz sand sand mo(u)ld of resin-bonded has at normal temperatures from hardware features, is easy to make overall sand mo(u)ld, and product appearance size precision is high, but this sand mold is with high content of technology, and cost is higher than waterglass; The quartz sand sand mo(u)ld easy manufacture with low content of technology of waterglass combination, cost are low, but its shortcoming is the poor dimensional precision of sand mo(u)ld, causes product allowance large, and presentation quality is poor.
At present, domestic castable refractory manufacturing enterprise generally adopts the quartz sand sand mold of waterglass combination, and this is also to cause China's casting refractory material product presentation quality is starkly lower than external product for a long time, the market competitiveness is starkly lower than one of key factor of external product.In addition, water-glass sand contains a large amount of vehicle substances, is difficult to be reproduced utilization, and sand mold is disposable use, will produce every year a large amount of industrial refuses, causes the wasting of resources and environmental pollution.
Negative pressure of vacuum moulding process is a kind of without binding agent, water and other additive, only with the sealing of dry sand, plastic sheeting, the technology of taking out negative pressure and carrying out moulding, possess casting dimension accurately, the advantage of the aspects such as clear-cut, energy-conserving and environment-protective, and this technique is cast boundary both at home and abroad and is described as " foundry engieering of 21st century " and " green revolution of foundary industry ".But the foundry engieering of the metal materials such as cast iron and castable refractory technology because the aspects such as material composition, temperature exist significant difference, thereby apply to castable refractory industry by negative pressure of vacuum moulding process and still have problems urgently to be resolved hurrily.
Patent of invention CN101143460 B discloses a kind of method of utilizing producing casting fireproof material by negative pressure hollow type.Publication number is the negative-pressure molding process that the patent application document of CN101823122A discloses a kind of casting refractory material product.But in above-mentioned founding refractory product technical process, exist flow process complexity, the easy easily defect of the aspect such as cracking of low, the goods of crush, efficiency.
Summary of the invention
In order to solve the above-mentioned technical problem existing in prior art, the object of the present invention is to provide a kind of composite die of producing castable refractory, composite die of the present invention, has well solved vacuum forming process application easily technical barrier of cracking of existing easy crush, goods in founding fire proofed wood technique.
Composite die rising head of the present invention adopts antivacuum moulding process, and body adopts vacuum forming technique to make.So, the characteristic of the aspect such as can bring into play rising head sand mold high-efficient simple, energy-conservation, high-temperature behavior is excellent, makes full use of again the advantage of the aspect such as environmental protection and energy saving, products appearance good quality of vacuum forming; And in the process of preparation, resinoid bond is blended in packing material in suitable ratio, give full play to the feature of resinoid bond air set, all can play a supporting role at normal temperature and high temperature to membranous wall, thereby can under lower vacuum pressure, implement casting, solve the easily technical barrier of cracking of the easy crush of vacuum forming technique, goods, and further improved the quality of goods.
To achieve these goals, the present invention has adopted following technical scheme:
Produce a composite die for castable refractory, comprise die ontology and rising head, described die ontology is arranged in incubator, is filled with the insulation material of jolt ramming in incubator; Between described rising head and die ontology, be provided with rebound, rising head periphery is provided with stay-warm case, and is filled with dry sand in stay-warm case; It is characterized in that described composite die adopts following steps to prepare: (1) is according to the shape fabricating die wall porous of goods and the model of hollow; (2) model of step (1) gained is placed on the template with vacuum suction chamber, and implement vacuum pumping on the outer surface that softening ethylene-vinyl acetate copolymer film is covered, described film is close on the die wall of described model, and in wherein said ethylene-vinyl acetate copolymer, the content of vinyl acetate is 25-35wt%; (3) model that is glued with described film step (2) being obtained is placed in the incubator with vacuum suction chamber, insert insulation material jolt ramming, implement incubator vacuum pumping, upset incubator also takes out model, place rebound and rising head, stay-warm case obtain described composite die with dry sand filling rising head surrounding on cover, wherein said insulation material comprises furane resins or the phenolic resins of 0.5-5.0wt%, and the quartz sand of 95-99.5 wt% or alumina hollow ball.
Wherein, described rising head adopts the sand mould plate of heating resisting metal, resin-bonded, sand mould plate or the heat retaining and exothermal system of waterglass combination to become.Further preferably, described rising head is become by heat retaining and exothermal system, and the described heat retaining and exothermal body silica fibre that contains 2.2-3.5 wt%, the quartz sand of 72-85wt%, the aluminium powder of 2.5-5.0wt%, the di-iron trioxide of 2.5-6.0wt%, manganese dioxide, the furane resins of 0.8-1.5wt% and the phenolic resins of 0.6-1.5wt% of 1.2-2.5.
Wherein, in described ethylene-vinyl acetate copolymer film, the content of vinyl acetate is 32wt%.In film, the content of vinyl acetate can have influence on the hardening capacity of film.
Wherein, described insulation material comprises the phenolic resins of 1.8wt%, the stearic acid of 1.2wt%, dimethicone, the acrylic acid modified rosin of 1.2wt% and the quartz sand of surplus of 1.5wt%.
Compared with prior art, the present invention has following beneficial effect:
1. the notch portion of emitting of goods does not need to vacuumize, and can realize the tender batch making of air set and same specification, has improved production efficiency.2. of the present invention vacuumizing can just can meet the needs of production under lower pressure, and the time of the pressurize of simultaneously casting also shortens greatly, thereby is conducive to save the energy, and rising head material selects heat retaining and exothermal body to can save energy more than 30% on selecting in addition.3. the employing of composite sand mould technique can guarantee the normal temperature strength of composite die, can guarantee again the high temperature casting case that do not collapse, and has effectively guaranteed the superiority of products appearance and inherent quality.
Accompanying drawing explanation
Fig. 1: the vacuum forming part-structure profile described in specific embodiment of the present invention;
Fig. 2: the structure of compound mould profile described in specific embodiment of the present invention;
In figure, the represented implication of each Reference numeral is respectively: 1-model, 2-vacuum suction chamber, 3-film, 4-passage, 5-incubator, 6-insulation material, 7-rebound, 8-rising head, 9-stay-warm case, 10-dry sand, 11-connector, 12-model passage.
The specific embodiment
Below with reference to the drawings and specific embodiments, technical scheme of the present invention is described further.
embodiment 1:
The present embodiment is exemplarily set forth the composite die of producing casting zirconia corundum goods 250 × 400 × 1200mm.Shown in accompanying drawing 1-2, described composite die is prepared by following steps:
Rising head 8 adopts heat retaining and exothermal system to make template (manganese dioxide, the furane resins of 0.8-1.5wt% and the phenolic resins of 0.6-1.5wt% of the aluminium powder of the silica fibre that contains 2.2-3.5 wt%, the quartz sand of 72-85wt%, 2.5-5.0wt%, the di-iron trioxide of 2.5-6.0wt%, 1.2-2.5), according to the drawing shape of technique initialization, by thick 400 (height) × 400 × 40mm() (2) and 400 (height) × 250 × 40 mm(thick) (2) heat retaining and exothermal body plate, adopt fastening being bolted together of steel wire of diameter 2mm.
To make vacuum forming model 1(appearance and size 250 × 400 × 1200 mm of hollow according to article shape) (adopt metal pattern, for example aluminum or aluminum alloy model), be connected with vacuum suction chamber 2, and by adopt softening heater to eva film 3(vinyl acetate content at the EVA of 32wt% plastic sheeting) soften, be covered in the outer surface of model 1, the passage 4 being connected with model 1 by vacuum suction chamber 2 and model passage 12 are taken the air in special purpose model 1 and between film special 3 and special purpose model 1 away, softening eva film 3 can be adjacent on model 1 outer surface,
The model 1 that is glued with eva film 3 is placed in vacuum forming incubator 5, and by insulation material 6(granularity at 50 orders, the furane resins of 0.5-5.0wt% or phenolic resins, and the quartz sand of 95-99.5 wt% or alumina hollow ball) insert in incubator 5, carry out jolt ramming operation, to guarantee that insulation material 6 can close contact eva film 3;
Start vavuum pump, by connector 11, incubator 5 is carried out to vacuum pumping, make 5 casees interior negative pressure that form of incubator, the eva film 3 that further hardens, and discharge the vacuum state in special purpose model 1, keep the negative pressure state of part between incubator 5 and film special 3, model 1 is taken out.
Upset is with the incubator 5 of eva film 3, and the heat retaining and exothermal body rising head 8 of placing rebound 7 and making, and place stay-warm case 9 and with dry sand 10 filling rising head 8 surroundings can obtain the composite die described in the present embodiment.
embodiment 2:
The present embodiment is exemplarily set forth the composite die of producing casting zirconia corundum goods 250 × 400 × 1200mm, and shown in accompanying drawing 1-2, described composite die is prepared by following steps:
Rising head 8 adopts resin bonded sand mould rising head 8(furane resins 3wt%, quartz sand 97wt%),, according to the drawing shape of technique initialization, be that 600(is high by rising head 8 interior shapes that adopt resin bonded sand mould to make) × 400 × 250mm, rising head 8 surrounding wall thickness are 30mm.
Vacuum forming model 1(appearance and size 250 × 400 × 1200 mm of hollow will be made according to article shape), be connected with vacuum suction chamber 2, and by adopt softening heater to eva film 3(vinyl acetate content at the EVA of 32wt% plastic sheeting) soften, be covered in the outer surface of model 1, the passage 4 being connected with model 1 by vacuum suction chamber 2 and model passage 12 are taken the air in special purpose model 1 and between film special 3 and special purpose model 1 away, and softening eva film 3 can be adjacent on model 1 outer surface;
The model 1 that is glued with eva film 3 is placed in vacuum forming incubator 5, and the insulation material described in insulation material 6(is comprised to the phenolic resins of 1.8wt%, the stearic acid of 1.2wt%, dimethicone, the acrylic acid modified rosin of 1.2wt% and the quartz sand of surplus of 1.5wt%) insert in incubator 5, carry out jolt ramming operation, to guarantee that insulation material 6 can close contact eva film 3;
Start vavuum pump, by connector 11, incubator 5 is carried out to vacuum pumping, make 5 casees interior negative pressure that form of incubator, the eva film 3 that further hardens, and discharge the vacuum state in special purpose model 1, keep the negative pressure state of part between incubator 5 and film special 3, model 1 is taken out.
Upset is with the incubator 5 of eva film 3, and the rising head 8 of placing rebound 7 and making, and place stay-warm case 9 and with dry sand 10 filling rising head 8 surroundings can obtain the composite die described in the present embodiment.
The specific embodiment of the present invention is only for being further elaborated and illustrating technical scheme of the present invention; anyly can not limit scope of the present invention according to embodiment per capita, the embodiment of all distortion being equal to of making in the claimed scope of claims of the present invention and change is all in the present invention's scope required for protection.
Claims (5)
1. a composite die of producing castable refractory, is characterized in that: it comprises die ontology and rising head, and described die ontology is arranged in incubator, is filled with the insulation material of jolt ramming in incubator; Between described rising head and die ontology, be provided with rebound, rising head periphery is provided with stay-warm case, and is filled with dry sand in stay-warm case; Described composite die adopts following steps to prepare: (1) is according to the shape fabricating die wall porous of goods and the model of hollow; (2) model of step (1) gained is placed on the template with vacuum suction chamber, and implement vacuum pumping on the outer surface that softening ethylene-vinyl acetate copolymer film is covered, described film is close on the die wall of described model, and in wherein said ethylene-vinyl acetate copolymer, the content of vinyl acetate is 25-35wt%; (3) model that is glued with described film step (2) being obtained is placed in the incubator with vacuum suction chamber, insert insulation material jolt ramming, implement incubator vacuum pumping, upset incubator also takes out model, place rebound and rising head, stay-warm case obtain described composite die with dry sand filling rising head surrounding on cover, wherein said insulation material comprises furane resins or the phenolic resins of 0.5-5.0wt%, and the quartz sand of 95-99.5 wt% or alumina hollow ball.
2. a kind of composite die of producing described castable refractory claimed in claim 1, is characterized in that: rising head adopts the sand mould plate of heating resisting metal, resin-bonded, sand mould plate or the heat retaining and exothermal system of waterglass combination to become.
3. a kind of composite die of producing described castable refractory claimed in claim 2, it is characterized in that: described rising head is become by heat retaining and exothermal system, and the described heat retaining and exothermal body silica fibre that contains 2.2-3.5 wt%, the quartz sand of 72-85wt%, the aluminium powder of 2.5-5.0wt%, the di-iron trioxide of 2.5-6.0wt%, manganese dioxide, the furane resins of 0.8-1.5wt% and the phenolic resins of 0.6-1.5wt% of 1.2-2.5.
4. a kind of composite die of producing described castable refractory claimed in claim 1, is characterized in that: in described ethylene-vinyl acetate copolymer film, the content of vinyl acetate is 32wt%.
5. a kind of composite die of producing described castable refractory claimed in claim 1, is characterized in that: the stearic acid that described insulation material contains the phenolic resins of 1.8wt%, 1.2wt%, the dimethicone of 1.5wt%, the acrylic acid modified rosin of 1.2wt% and the quartz sand of surplus.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210184412.6A CN102672808B (en) | 2012-06-06 | 2012-06-06 | Composite mould for manufacturing casting fireproof materials |
| PCT/CN2012/078521 WO2013181876A1 (en) | 2012-06-06 | 2012-07-11 | Combined mold for manufacturing fusion-cast refractory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210184412.6A CN102672808B (en) | 2012-06-06 | 2012-06-06 | Composite mould for manufacturing casting fireproof materials |
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| Publication Number | Publication Date |
|---|---|
| CN102672808A CN102672808A (en) | 2012-09-19 |
| CN102672808B true CN102672808B (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210184412.6A Active CN102672808B (en) | 2012-06-06 | 2012-06-06 | Composite mould for manufacturing casting fireproof materials |
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| Country | Link |
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| CN (1) | CN102672808B (en) |
| WO (1) | WO2013181876A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672794B (en) * | 2012-06-06 | 2014-05-28 | 瑞泰科技股份有限公司 | Composite sand mould forming process for producing casting fireproof materials |
| CN108145833B (en) * | 2018-01-08 | 2023-07-21 | 郑州远东耐火材料有限公司 | Common casting orifice ring die for zirconia fused cast bricks and orifice ring production method |
| CN108481523B (en) * | 2018-05-21 | 2023-10-31 | 都江堰瑞泰科技有限公司 | AZS-grid brick mold, production device and production process |
| CN109366699A (en) * | 2018-11-07 | 2019-02-22 | 南通祥发模具制造有限公司 | A kind of assembled architecture mold |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148442A (en) * | 1980-04-21 | 1981-11-17 | Mitsubishi Heavy Ind Ltd | Production of mold |
| CN101143460B (en) * | 2007-08-31 | 2010-05-19 | 侯松发 | Method for producing casting fireproof material by negative pressure hollow type method |
| CN101823122A (en) * | 2010-03-24 | 2010-09-08 | 河南省前卫实业有限公司 | Negative-pressure molding process of casting refractory material product |
| CN102407322A (en) * | 2011-12-01 | 2012-04-11 | 昆明理工大学 | Casting system used for founding zinc and zinc alloy |
| CN102672794B (en) * | 2012-06-06 | 2014-05-28 | 瑞泰科技股份有限公司 | Composite sand mould forming process for producing casting fireproof materials |
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2012
- 2012-06-06 CN CN201210184412.6A patent/CN102672808B/en active Active
- 2012-07-11 WO PCT/CN2012/078521 patent/WO2013181876A1/en active Application Filing
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| Publication number | Publication date |
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| WO2013181876A1 (en) | 2013-12-12 |
| CN102672808A (en) | 2012-09-19 |
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Application publication date: 20120919 Assignee: Dujiangyan Ruitai Technology Co.,Ltd. Assignor: Ruitai Technology Co., Ltd. Contract record no.: 2014510000129 Denomination of invention: Composite mould for manufacturing casting fireproof materials Granted publication date: 20140528 License type: Exclusive License Record date: 20140821 |
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