CN104741538A - Environment-friendly heat-preserving riser - Google Patents
Environment-friendly heat-preserving riser Download PDFInfo
- Publication number
- CN104741538A CN104741538A CN201510194430.6A CN201510194430A CN104741538A CN 104741538 A CN104741538 A CN 104741538A CN 201510194430 A CN201510194430 A CN 201510194430A CN 104741538 A CN104741538 A CN 104741538A
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- Prior art keywords
- rising head
- environment
- riser
- quartz sand
- preserving
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- 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
- B22C9/088—Feeder heads
-
- 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
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/26—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of carbohydrates; of distillation residues therefrom
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses an environment-friendly heat-preserving riser. The environment-friendly heat-preserving riser comprises the following components in percentage by volume: 70 percent of quartz sand, 18 percent of paper scraps and 12 percent of flour. The environment-friendly heat-preserving riser is made by means of the following steps: (1) selecting quartz sand being 80-120 meshes, flour, waste newspaper or waste cardboards; (2) fully soaking the waste newspaper or waste cardboards with water for 5-10 minutes; (3) putting 60-80 percent of quartz sand, 10-20 percent of paper scraps and 10-20 percent of flour into stirrer, adding water, and stirring uniformly; (4) supporting the uniformly-mixed heat-preserving riser mixing components on a wooden die (9) in the thickness of 15-25 millimeters (different thicknesses are selected according to different castings); (5) compressing the riser with hands, beating uniformly, removing a riser (3) from the wooden die (9), putting the riser into a baking room for baking, and drying and molding for later use. The environment-friendly heat-preserving riser has the positive effects of high practicability, capability of preserving heat continuously and environmental friendliness.
Description
Technical field
The present invention relates to a kind of environmental protection model field, particularly relate to a kind of environment-friendly insulating rising head.
Background technology
In Foundry Works's molten steel casting foundry goods process, the molten steel of casting enters from the entrance watering die cavity, has a certain amount of molten steel and emerge from the outlet of this model cavity after watering full model cavity, therefore this outlet is referred to as: " rising head ".At present, rising head is by " (formal name used at school: liquid sodium silicate, also known as sodium silicate for quartz sand-waterglass.Lower same) ", make through shaping post-drying by certain proportioning; This rising head has two effects: one is the air exit as model cavity, and two is the feeding liquid as foundry goods molten steel.Under normal conditions, because the molten steel in rising head cools in advance than the molten steel in model cavity, crystallization, to solidify, this supplements just to the backflow of molten steel in rising head and causes obstruction, directly cause " foundry goods reduced scale " and " casting shrinking hole " two kinds of underproof quality results, " foundry goods reduced scale " is exactly that casting dimension reduces; " casting shrinking hole " is exactly that pore appears in cast-internal; Their row becomes mechanism to be all caused by molten steel shrinkage.The former is directly reducing of external dimensions, the latter is owing to making the molten steel of cast-internal be added to gabarit by " by force " from crystallization direction outside to inside, now be accumulated in the molten steel of rising head as not being back in time in " room " that stayed by the molten steel that " by force " supplements, this " room " just generates " casting shrinking hole "; Occur that " foundry goods reduced scale " is difficult to repair afterwards, in most cases scrap process.And the existence of " casting shrinking hole " reduces the intensity of foundry goods, affecting machining accuracy, then very easily causing machined hole as appeared at processing district, is castability " formidable enemy "; And the discarded object formed after the burning of " quartz sand-waterglass " formula is the solid that quality is comparatively hard, can not enter soil layer, can only be poured over the place that environmental administration specifies.
Generally speaking, the technical problem needing those skilled in the art urgently to solve at present is: the material adopting science environmental protection, how to suppress foundry goods shrinkage cavity and foundry goods reduced scale as much as possible, realizes rising head and be better incubated the problem with environment protecting.
Summary of the invention
Object of the present invention is exactly that provide a kind of environment-friendly insulating rising head, it has high insulating effect and the advantage of material environment friendly in order to solve the problem.
To achieve these goals, the present invention adopts following technical scheme:
A kind of environment-friendly insulating rising head, by volume percentage, component is as follows: quartz sand 60%-80%; Paper scrap 10%-20%; Flour 10%-20%.
A kind of environment-friendly insulating rising head of the present invention, is prepared from by following method:
1, quartz sand, flour, old newsprint or waste paper shell is chosen some;
2, be soaked in water old newsprint or waste paper shell 5-10 minute, makes it soak completely;
3, according to quartz sand 60%-80%, the volume proportion of shredded paper bits 10%-20%, flour 10%-20% is put into mixer and is added water and stir, and obtains blending ingredients;
4, mixed composition is held up on wooden model, obtain rising head;
5, rising head is pressed even, rising head is deviate from wooden model, put into drying room baking, after drying both finished product;
Wherein, the granular size preferable range of above-mentioned quartz sand is 80-120 order; Blending ingredients holds up the thickness on wooden model to be 15-25mm; The bake out temperature that rising head puts into drying room is 180-280 degree; The drying time that rising head puts into drying room is 2-10 hour.
Beneficial effect of the present invention:
Adopt flour as the rising head of adhesive, the discarded object formed after burning is the mixture of loose shape quartz sand and flour, paper scrap ashes, environmentally safe; It is reusable after quartz sand sieves; Ashes are plant ash, itself is in micro-alkali, it is the nutrient of crops, enter soil layer not only harmless and be conducive to crop growth, and the discarded object formed after avoiding traditional " quartz sand-waterglass " formula burning is the solid that quality is comparatively hard, can not soil layer be entered, the inconvenience in the place that environmental administration specifies can only be poured over, there is good, the lasting insulation of practicality, environment friendly and pollution-free good effect.
Accompanying drawing explanation
Fig. 1 is using state structural representation of the present invention;
Fig. 2 is rising head molding structure schematic diagram of the present invention.
Wherein, 1. casting gate, 2. model cavity, 3. rising head, 4. dead head top mouth, 5. molten steel outlet, 6. sandbox, 7. shrinkage cavity, 8. reduced scale, 9. wooden model.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
Embodiment 1, a kind of environment-friendly insulating rising head, is prepared from by following method:
(1) choosing granular size is that 80-120 order quartz sand, flour, old newsprint or waste paper shell are some;
(2) be soaked in water old newsprint or waste paper shell 5-10 minute, makes it soak completely;
(3) according to quartz sand 70%, shredded paper bits 18%, the volume proportion of flour 12% is put into mixer and is added water and stir, and obtains blending ingredients;
(4) be that 15-25mm holds up on wooden model with thickness by mixed composition, obtain rising head;
(5) rising head is pressed even, rising head is deviate from wooden model, put into drying room baking, get product after drying.
Embodiment 2, a kind of environment-friendly insulating rising head, is prepared from by following method:
(1) choosing granular size is that 80-120 order quartz sand, flour, old newsprint or waste paper shell are some;
(2) be soaked in water old newsprint or waste paper shell 5-10 minute, makes it soak completely;
(3) according to quartz sand 60%, shredded paper bits 20%, the volume proportion of flour 20% is put into mixer and is added water and stir, and obtains blending ingredients;
(4) be that 15-25mm holds up on wooden model with thickness by mixed composition, obtain rising head;
(5) rising head is pressed even, rising head is deviate from wooden model, put into drying room baking, get product after drying.
Embodiment 3, a kind of environment-friendly insulating rising head, is prepared from by following method:
(1) choosing granular size is that 80-120 order quartz sand, flour, old newsprint or waste paper shell are some;
(2) be soaked in water old newsprint or waste paper shell 5-10 minute, makes it soak completely;
(3) according to quartz sand 80%, shredded paper bits 10%, the volume proportion of flour 10% is put into mixer and is added water and stir, and obtains blending ingredients;
(4) be that 15-25mm holds up on wooden model with thickness by mixed composition, obtain rising head;
(5) rising head is pressed even, rising head is deviate from wooden model, put into drying room baking, get product after drying.
Wherein, the granular size preferable range of above-mentioned quartz sand is 80-120 order; Blending ingredients holds up the thickness on wooden model 9 to be 15-25mm; The bake out temperature that rising head puts into drying room is 180-280 degree; The drying time that rising head puts into drying room is 2-10 hour.
Sandbox material conventional when quartz sand is cast article; It has ventilative, heat radiation, resistant to elevated temperatures characteristic; High-temperature stability makes it be unlikely to be melted by high-temperature molten steel in the process of contact molten steel, thus keep original moulding shape; Heat dissipation characteristics can be gone out by the heat conduction of molten steel in the time of setting after molten steel casting completes, and molten steel stablized very soon shaping; Ventilating performance to discharge in molten steel casting process sandbox because of the steam of moisture generation, the sandbox avalanche or cast(ing) surface pit, hole avoiding steam to assemble causing when cannot discharge.
Shredded paper bits have the characteristic of combustion heating; When molten steel arrives rising head through casting cavity from outlet, the shredded paper bits in rising head meet the high-temp combustion evolution of heat and reverse heating molten steel, can extend setting time after molten steel is heated, thus carry out backflow feeding with well liquid to cast-internal.
Flour has bonding and combustion heating characteristic; Quartz sand and paper scrap itself do not have an adhesion characteristic, and it needs flour to be glued together by two kinds of components as adhesive, to obtain the shape needing to keep; Its combustion heating characteristic is identical with paper scrap.
A kind of environment-friendly insulating rising head provided by the invention, as shown in Figure 1 and Figure 2, in use, molten steel enters model cavity 2 from casting gate 1, and the air in cavity is discharged from molten steel outlet 5 through rising head 3, dead head top mouth 4 by the molten steel entering model cavity 2.Just overflow to molten steel outlet 5 and enter rising head 3 after molten steel fills model cavity 2 and stockpile.Paper scrap in rising head and cereal binder component are lighted by the molten steel entering rising head 3, the reverse heating molten steel of heat that burning produces, be delayed molten steel cools, crystallization, time of solidifying, the sandbox 6 outwards heat conduction that molten steel now in model cavity 2 is made up of quartz sand through cavity surrounding, and Slow cooling, crystallization, to solidify.The volume solidifying rear molten steel reduces, and the molten steel backflow be accumulated in by delayed cooling in rising head 3 supplements by the volume of minimizing, guarantees stable casting dimension and inside quality.If this rising head 3 is without heat preservation property, be accumulated in molten steel in rising head 3 will prior to the molten steel cools in model cavity 2, crystallization, solidify; The volume that the molten steel shrinkage of model cavity 2 goes out can not get supplementing of molten steel, will cause reduced scale 8 and shrinkage cavity 7 two kinds of casting quality defects, cannot realize casting quality target.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (6)
1. an environment-friendly insulating rising head, is characterized in that, by volume percentage, and component is as follows: quartz sand 60-80%, shredded paper bits 10-20%, flour 10-20%.
2. a preparation method for environment-friendly insulating rising head, is characterized in that, is realized by following steps:
(1) quartz sand, flour, old newsprint or waste paper shell is chosen some;
(2) be soaked in water old newsprint or waste paper shell 5-10 minute, makes it soak completely;
(3) according to quartz sand 60-80%, the volume proportion of shredded paper bits 10-20%, flour 10-20% is put into mixer and is added water and stir, and obtains blending ingredients;
(4) mixed composition is held up on wooden model, obtain rising head;
(5) rising head is pressed even, rising head is deviate from wooden model, put into drying room baking, after drying both finished product.
3. the preparation method of environment-friendly insulating rising head according to claim 2, is characterized in that, the granular size of described quartz sand is 80-120 order.
4. the preparation method of environment-friendly insulating rising head according to claim 2, is characterized in that, blending ingredients holds up the thickness on wooden model to be 15-25mm.
5. the preparation method of environment-friendly insulating rising head according to claim 2, is characterized in that, the bake out temperature that rising head puts into drying room is 180-280 degree.
6. the preparation method of environment-friendly insulating rising head according to claim 2, is characterized in that, the drying time that rising head puts into drying room is 2-10 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194430.6A CN104741538A (en) | 2015-04-22 | 2015-04-22 | Environment-friendly heat-preserving riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194430.6A CN104741538A (en) | 2015-04-22 | 2015-04-22 | Environment-friendly heat-preserving riser |
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| Publication Number | Publication Date |
|---|---|
| CN104741538A true CN104741538A (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510194430.6A Pending CN104741538A (en) | 2015-04-22 | 2015-04-22 | Environment-friendly heat-preserving riser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470565A (en) * | 2017-08-15 | 2017-12-15 | 山东铁大王冶铸材料有限公司 | A kind of type of heat rising head |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1748905A (en) * | 2005-09-29 | 2006-03-22 | 朱晓明 | Fiber composite heat insulation riser sleever |
| CN101549386A (en) * | 2009-05-18 | 2009-10-07 | 谢锦荣 | An insulating riser |
| CN101559475A (en) * | 2009-05-18 | 2009-10-21 | 谢锦荣 | Waist-shaped insulated feeder |
| JP2010042438A (en) * | 2008-08-09 | 2010-02-25 | Ie Solution Kk | Riser and riser sleeve structure |
| CN103394646A (en) * | 2013-08-06 | 2013-11-20 | 霍山县东胜铸造材料有限公司 | Disappearable riser |
| CN104368761A (en) * | 2014-11-18 | 2015-02-25 | 贵州安吉航空精密铸造有限责任公司 | Heating and thermal insulation riser sleeve |
-
2015
- 2015-04-22 CN CN201510194430.6A patent/CN104741538A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1748905A (en) * | 2005-09-29 | 2006-03-22 | 朱晓明 | Fiber composite heat insulation riser sleever |
| JP2010042438A (en) * | 2008-08-09 | 2010-02-25 | Ie Solution Kk | Riser and riser sleeve structure |
| CN101549386A (en) * | 2009-05-18 | 2009-10-07 | 谢锦荣 | An insulating riser |
| CN101559475A (en) * | 2009-05-18 | 2009-10-21 | 谢锦荣 | Waist-shaped insulated feeder |
| CN103394646A (en) * | 2013-08-06 | 2013-11-20 | 霍山县东胜铸造材料有限公司 | Disappearable riser |
| CN104368761A (en) * | 2014-11-18 | 2015-02-25 | 贵州安吉航空精密铸造有限责任公司 | Heating and thermal insulation riser sleeve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470565A (en) * | 2017-08-15 | 2017-12-15 | 山东铁大王冶铸材料有限公司 | A kind of type of heat rising head |
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Application publication date: 20150701 |