CN109530611A - A method of using Foundry mixture molding sand - Google Patents
A method of using Foundry mixture molding sand Download PDFInfo
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- CN109530611A CN109530611A CN201811651662.XA CN201811651662A CN109530611A CN 109530611 A CN109530611 A CN 109530611A CN 201811651662 A CN201811651662 A CN 201811651662A CN 109530611 A CN109530611 A CN 109530611A
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- weight percentage
- sand
- foundry
- molding sand
- dust
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Classifications
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- 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
Abstract
The invention discloses a kind of method using Foundry mixture molding sand, the molding sand includes the old sand of the bentonite of 0.3-0.5% weight percentage, the coal dust of 0.1-0.28% weight percentage, the Foundry of 0.42-0.6% weight percentage, the plant amylum of 0.015-0.025% weight percentage, 99-110% weight percentage；The bentonite, coal dust, Foundry, plant amylum, old sand are placed in sand mixer in proportion mixes 45-65S.The present invention has many advantages, such as to turn waste into wealth in dust, while reducing production cost, reducing production environment pollution.
Description
Technical field
The present invention relates to molding sand casting technology fields, more particularly to a kind of method using Foundry mixture molding sand.
Background technique
Tide mould sand casting sand constituent includes fresh sand, old sand, water, bentonite, coal dust etc., in addition it is also possible to addition-
The additives such as starch.The characteristics such as the intensity, toughness of molding sand are to act on forming one layer and being coated on water due to additives such as bentonites
Caused by film on sand grains.Molding sand quality difference is the major reason of current Foundry Works, China surface quality of continuous castings difference, is also made certainly
Objective factor as raw material difference.With the precision management of ingredient, the ingredient cost of molding sand is stepped up, and increases cost
Pressure, while during tide mould sand circulation management, a large amount of dust is generated, dust pollution is caused, is collected by cleaner
Middle collection, it is reasonable to recycle containing a large amount of effectively clay and coal dust in this dust, it is ensured that the quality of molding sand, together
When dust circulation regeneration use, reduce disposal of pollutants, reduce ingredient cost.
Summary of the invention
Present invention aims at the molding sand compounding methods for proposing a kind of requisite quality, reducing cost, reducing environmental pollution.
Preferably, the present invention can also have following technical characteristic:
A method of using Foundry mixture molding sand, the molding sand includes the swollen of 0.3-0.5% weight percentage
Moisten soil, the coal dust of 0.1-0.28% weight percentage, the Foundry of 0.42-0.6% weight percentage, 0.015-
The old sand of the plant amylum of 0.025% weight percentage, 99-110% weight percentage；The bentonite, coal dust, casting
Dust, plant amylum, old sand are placed in sand mixer in proportion mixes 45-65S.
Further, the bentonitic weight percentage is 0.35-0.45%, the weight percentage of coal dust is
0.17-0.22%, Foundry weight percentage be 0.48-0.53%, the weight percentage of plant amylum is
The old sand of 0.017-0.023%, 100-105% weight percentage.
Further, the bentonitic weight percentage is 0.37%, the weight percentage of coal dust is 0.18%,
The weight percentage of Foundry is 0.53%, the weight percentage of plant amylum is 0.02%, 100% weight percent
The old sand of content.
Further, the Foundry includes the bentonite of 27-35% weight percentage, 17-25% weight percent
The fine sand of the coal dust of content, 45-55% weight percentage.
Further, the Foundry, which is derived from, collects the dust generated in casting process using wind-force cleaner.
Further, dust collection point includes mulling process, shakeout operation, return sand cooling process.
The beneficial effect of the present invention compared with the prior art includes:
(1) dust generated in casting process is collected by cleaner, by the effective component bentonite of dust
And coal dust utilizes again, turns waste into wealth, while can also reduce dust pollution；Fresh sand is replaced completely with old sand, further decreases life
Produce cost；
(2) using the molding sand of this method production, molding sand bentonite consumption per ton reduces by 35% or more relative to original, coal dust
Dosage reduces by 33% or more, and molten iron per ton saves 120 yuan of mulling cost；
(3) it is the content ratio for guaranteeing bentonite and coal dust in dust, selects mulling process, shakeout operation, return sand cooling
Process is as dust collection point；
(4) molding sand that this method is produced meets the performance of green-sand indispensability, such as mobility, plasticity, green compression strength, heat
The technical parameters such as green tensile strength reach standard.
Specific embodiment
Invention is further described in detail With reference to embodiment.It is emphasized that following the description is only
It is merely exemplary, the range and its application being not intended to be limiting of the invention.
It is as follows, non-limiting and nonexcludability embodiment will be described.
Embodiment 1
A method of using Foundry mixture molding sand, the ingredient of the molding sand includes the swollen of 0.37% weight percentage
Moisten soil, the coal dust of 0.18% weight percentage, the Foundry of 0.53% weight percentage, 0.02% weight percentage
Plant amylum, 102% weight percentage old sand.The bentonite, coal dust, Foundry, plant amylum, old sand press than
45S is mixed in example merging sand mixer.
Above-mentioned Foundry include the bentonite of 31% weight percentage, 17% weight percentage coal dust,
The fine sand of 52% weight percentage.The Foundry, which is derived from, collects the powder generated in casting process using wind-force cleaner
Dirt.The selection of the collection point of Foundry is needed by stringent detection, before selecting the collection point, first to selected process
The dust that is collected into of collection point detected, it is ensured that the content of bentonite, coal dust in dust is in the range of requirement.
Therefore, Foundry collection point is preferably provided at mulling process, shakeout operation, return sand cooling process.
Embodiment 2
A method of using Foundry mixture molding sand, the ingredient of the molding sand includes the swollen of 0.37% weight percentage
Moisten soil, the coal dust of 0.18% weight percentage, the Foundry of 0.53% weight percentage, 0.02% weight percentage
Plant amylum, 100% weight percentage old sand.The bentonite, coal dust, Foundry, plant amylum, old sand press than
50S is mixed in example merging sand mixer.
Above-mentioned Foundry include the bentonite of 32% weight percentage, 19% weight percentage coal dust,
The fine sand of 49% weight percentage.The Foundry, which is derived from, collects the powder generated in casting process using wind-force cleaner
Dirt.The selection of the collection point of Foundry is needed by stringent detection, before selecting the collection point, first to selected process
The dust that is collected into of collection point detected, it is ensured that the content of bentonite, coal dust in dust is in the range of requirement.
Therefore, Foundry collection point is preferably provided at mulling process, shakeout operation, return sand cooling process.
Embodiment 3
A method of using Foundry mixture molding sand, the ingredient of the molding sand includes the swollen of 0.45% weight percentage
Profit soil, the coal dust of 0.22% weight percentage, the Foundry of 0.48% weight percentage, 0.022% weight percent contain
The old sand of 105% weight percentage of plant amylum of amount；The bentonite, coal dust, Foundry, plant amylum, old sand are pressed
65S is mixed in ratio merging sand mixer.
Above-mentioned Foundry include the bentonite of 27% weight percentage, 21% weight percentage coal dust,
The fine sand of 52% weight percentage.The Foundry, which is derived from, collects the powder generated in casting process using wind-force cleaner
Dirt.The selection of the collection point of Foundry is needed by stringent detection, before selecting the collection point, first to selected process
The dust that is collected into of collection point detected, it is ensured that the content of bentonite, coal dust in dust is in the range of requirement.
Therefore, Foundry collection point is preferably provided at mulling process, shakeout operation, return sand cooling process.
Embodiment 4
A method of using Foundry mixture molding sand, the ingredient of the molding sand includes the swollen of 0.35% weight percentage
Moisten soil, the coal dust of 0.2% weight percentage, the Foundry of 0.5% weight percentage, 0.02% weight percentage
The old sand of plant amylum, 100% weight percentage.The bentonite, coal dust, Foundry, plant amylum, old sand are in proportion
55S is mixed in merging sand mixer.
Above-mentioned Foundry include the bentonite of 30% weight percentage, 20% weight percentage coal dust,
The fine sand of 50% weight percentage.The Foundry, which is derived from, collects the powder generated in casting process using wind-force cleaner
Dirt.The selection of the collection point of Foundry is needed by stringent detection, before selecting the collection point, first to selected process
The dust that is collected into of collection point detected, it is ensured that the content of bentonite, coal dust in dust is in the range of requirement.
Therefore, Foundry collection point is preferably provided at mulling process, shakeout operation, return sand cooling process.
High quality casting is obtained, green-sand must have following performance:
1, casting mold must be filled consolidation under pressure by green-sand, therefore molding sand should have " mobility ".
2, green-sand should have certain " plasticity ", guarantee moulding molding or do not damage during transportation.
3, green-sand must have enough intensity deformation occurs to guarantee after molding its own, and resist in casting
The erosion of molten metal.Therefore, tide mould sand must have enough " green compression strength, hot green tensile strength ".
4, green-sand must have " gas permeability ", so that sand mold (core) generates in casting process gas and water vapour are from sand
It is escaped in type and does not generate gas hole defect.
5, green-sand must have enough " dry strength ", with the casting after guarantee casting without swollen type defect, and guarantee to cast
The dimensional accuracy of part.
6, green-sand must have enough " refractoriness " resist high temperature liquid iron wash away sand mold to avoid scab, sintering etc. lack
It falls into.
By the molding sand that raw material proportioning of the invention produces, meet the prerequisite performance of above-mentioned green-sand.
It would be recognized by those skilled in the art that it is possible for making numerous accommodations to above description, so embodiment is only
For describing one or more particular implementations.
It is counted as example embodiment of the invention although having been described and describing, it will be apparent to those skilled in the art that
It can be variously modified and is replaced, without departing from spirit of the invention.Furthermore it is possible to make many modifications with will be special
Condition of pledging love is fitted to religious doctrine of the invention, without departing from invention described herein central concept.So the present invention is unrestricted
In specific embodiment disclosed herein, but the present invention may further include belonging to all embodiments of the scope of the invention and its being equal
Object.
Claims (6)
1. a kind of method using Foundry mixture molding sand, it is characterised in that: the molding sand includes 0.3-0.5% weight percent
The bentonite of content, the coal dust of 0.1-0.28% weight percentage, 0.42-0.6% weight percentage Foundry,
The old sand of the plant amylum of 0.015-0.025% weight percentage, 99-110% weight percentage；The bentonite, coal
Powder, Foundry, plant amylum, old sand are placed in sand mixer mix in proportion.
2. a kind of method using Foundry mixture molding sand as described in claim 1, it is characterised in that: described bentonitic
Weight percentage is 0.35-0.45%, the weight percentage of coal dust is 0.17-0.22%, the weight percent of Foundry
Content is 0.48-0.53%, the weight percentage of plant amylum is 0.017-0.023%, 100-105% weight percentage
Old sand.
3. a kind of method using Foundry mixture molding sand as claimed in claim 2, it is characterised in that: described bentonitic
Weight percentage is 0.37%, the weight percentage of coal dust is 0.18%, the weight percentage of Foundry is
0.53%, the weight percentage of plant amylum is the old sand of 0.02%, 100% weight percentage.
4. a kind of method using Foundry mixture molding sand as described in claim 1, it is characterised in that: the Foundry
Coal dust, the 45-55% weight percentage of bentonite, 17-25% weight percentage including 27-35% weight percentage
Fine sand.
5. a kind of method using Foundry mixture molding sand as claimed in claim 4, it is characterised in that: the Foundry
It is derived from and collects the dust generated in casting process using wind-force cleaner.
6. a kind of method using Foundry mixture molding sand as claimed in claim 4, it is characterised in that: dust collection point packet
Include mulling process, shakeout operation, return sand cooling process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811651662.XA CN109530611A (en) | 2018-12-31 | 2018-12-31 | A method of using Foundry mixture molding sand |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811651662.XA CN109530611A (en) | 2018-12-31 | 2018-12-31 | A method of using Foundry mixture molding sand |
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| CN109530611A true CN109530611A (en) | 2019-03-29 |
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| CN201811651662.XA Pending CN109530611A (en) | 2018-12-31 | 2018-12-31 | A method of using Foundry mixture molding sand |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441676A (en) * | 2021-06-30 | 2021-09-28 | 上柴动力海安有限公司 | Formula and preparation method of molding sand for cast iron |
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|---|---|---|---|---|
| CN102366811A (en) * | 2011-10-10 | 2012-03-07 | 辛培兴 | Preparation method of molding sand for gray iron casting |
| CN104226889A (en) * | 2014-09-24 | 2014-12-24 | 河南省西峡汽车水泵股份有限公司 | Casting molding sand with regenerated dedusting ash and preparation technology of casting molding sand |
| CN106077421A (en) * | 2016-06-01 | 2016-11-09 | 苏州东海玻璃模具有限公司 | A kind of gravitational casting molding sand and preparing process thereof |
| CN107598071A (en) * | 2017-09-30 | 2018-01-19 | 江苏闽江矿业有限公司 | A kind of molding sand |
| CN107971452A (en) * | 2017-11-28 | 2018-05-01 | 上海航天精密机械研究所 | Ironcasting high density moulding green-sand and preparation method thereof |
| CN108746477A (en) * | 2018-06-26 | 2018-11-06 | 重庆长江造型材料（集团）股份有限公司 | Clay sand system dust recycles technique |
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2018
- 2018-12-31 CN CN201811651662.XA patent/CN109530611A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366811A (en) * | 2011-10-10 | 2012-03-07 | 辛培兴 | Preparation method of molding sand for gray iron casting |
| CN104226889A (en) * | 2014-09-24 | 2014-12-24 | 河南省西峡汽车水泵股份有限公司 | Casting molding sand with regenerated dedusting ash and preparation technology of casting molding sand |
| CN106077421A (en) * | 2016-06-01 | 2016-11-09 | 苏州东海玻璃模具有限公司 | A kind of gravitational casting molding sand and preparing process thereof |
| CN107598071A (en) * | 2017-09-30 | 2018-01-19 | 江苏闽江矿业有限公司 | A kind of molding sand |
| CN107971452A (en) * | 2017-11-28 | 2018-05-01 | 上海航天精密机械研究所 | Ironcasting high density moulding green-sand and preparation method thereof |
| CN108746477A (en) * | 2018-06-26 | 2018-11-06 | 重庆长江造型材料（集团）股份有限公司 | Clay sand system dust recycles technique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441676A (en) * | 2021-06-30 | 2021-09-28 | 上柴动力海安有限公司 | Formula and preparation method of molding sand for cast iron |
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Application publication date: 20190329 |
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