CN107598071A - A kind of molding sand - Google Patents
A kind of molding sand Download PDFInfo
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- CN107598071A CN107598071A CN201710913015.0A CN201710913015A CN107598071A CN 107598071 A CN107598071 A CN 107598071A CN 201710913015 A CN201710913015 A CN 201710913015A CN 107598071 A CN107598071 A CN 107598071A
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- parts
- sand
- casting
- magnesia
- clay
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Abstract
The present invention relates to one kind, it is characterised in that：It is made up of in parts by weight following component：15 ~ 25 parts of clay-bonded sand, 15 ~ 25 parts of quartz sand, white 20 ~ 25 parts of sand, 20 ~ 25 parts of magnesia, 8 ~ 15 parts of bentonite, 5 ~ 8 parts of zeolite powder, 3 ~ 6 parts of rosin, 2 ~ 5 parts of land plaster, 5 ~ 10 parts of coal dust, 25 ~ 35 parts of binding agent, 10 ~ 15 parts of curing agent, 5 ~ 10 parts of starch, 10 ~ 13 parts of water；The present invention is compared with prior art using clay-bonded sand as raw material so that adhesive property of the invention protrudes, and not only making is simple, cost is cheap but also suitable for the secondary use after molding sand recovery, greatly reduces use cost by the present invention.The coefficient of expansion is smaller when white sand and magnesia are heated, and the roughing sand as casting sand is mixed using white sand and magnesia with quartz sand, reduces the coefficient of expansion of quartz sand so that casting condensation rate is uniform, and cast(ing) surface is not likely to produce crackle and shrinkage cavity after condensation；The viscosity enhancing of casting sand can be caused by adding coal dust and clay.
Description
Technical field
The present invention relates to ore in sand form field, more particularly to a kind of molding sand.
Background technology
Molding sand is the material for being used for moulding in sand casting, and effect of the molding sand in Foundry Production is particularly important, because of type
The poor quality of sand and caused by casting wasted product account for the 30~50% of the total waste product of casting.The cementitiousness of molding sand is to weigh
Water-glass sand is made as binding agent in one important indicator of molding sand quality quality, existing molding sand generally use waterglass, though
Right bond effect is relatively good, but because waterglass price is somewhat expensive, so the manufacturing cost of molding sand is also higher, Er Qieshui
Glass sand is in actual use, occur the problems such as knockout is difficult and old sand is not easy to regenerate.
A variety of casting flaws, such as sand holes, crackle, stomata, shrinkage cavity often occur in process of production for casting
Deng, and the generation of crackle is relevant with the condensation rate of casting, condenses casting as casting sand using quartz sand in the prior art
Part, but quartz sand condensing capacity is weak, and the coefficient of expansion is big, and the local expansion suddenly of casting occurs using quartz sand and clay merely
Situation, so as to casting partial condensation occur, so that casting condensation rate is uneven, stress is produced, easily cracks and contracts
Hole.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of molding sand, can solve the problem that in general sand cast condensation rate not
Crack and the problem of shrinkage cavity, and reuse effect difference the problem of.
In order to solve the above technical problems, the technical scheme is that：A kind of molding sand, its innovative point are：By weight
Number is made up of following component：15 ~ 25 parts of clay-bonded sand, 15 ~ 25 parts of quartz sand, white 20 ~ 25 parts of sand, 20 ~ 25 parts of magnesia are swollen
8 ~ 15 parts of profit soil, 5 ~ 8 parts of zeolite powder, 3 ~ 6 parts of rosin, 2 ~ 5 parts of land plaster, 5 ~ 10 parts of coal dust, binding agent 25 ~ 35
Part, 10 ~ 15 parts of curing agent, 5 ~ 10 parts of starch, 10 ~ 13 parts of water.
The advantage of the invention is that：
1）The present invention is compared with prior art using clay-bonded sand as raw material so that adhesive property of the invention protrudes, the present invention
The secondary use that simple, cost is cheap but also is applied to after molding sand recovery is not only made, greatly reduces use cost.White sand and
The coefficient of expansion is smaller when magnesia is heated, and the roughing sand as casting sand is mixed using white sand and magnesia with quartz sand, reduces quartz sand
The coefficient of expansion so that casting condensation rate is uniform, and cast(ing) surface is not likely to produce crackle and shrinkage cavity after condensation；Add coal dust and glue
Soil can cause the viscosity enhancing of casting sand.
Embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among described scope of embodiments.
Embodiment 1：
A kind of molding sand, it is made up of in parts by weight following component：15 parts of clay-bonded sand, 15 parts of quartz sand, white 20 parts of sand, magnesia
20 parts, 8 parts of bentonite, 5 parts of zeolite powder, 3 parts of rosin, 2 parts of land plaster, 5 parts of coal dust, 25 parts of binding agent, curing agent
10 parts, 5 parts of starch, 10 parts of water.
Above-mentioned material is mixed and stirred, then it is heated, persistently to it while heating
It is stirred, is heated to temperature and reaches 220 DEG C, stop heating, molding sand finished product is produced after being cooled to normal temperature.
Embodiment 2：
A kind of molding sand, it is made up of in parts by weight following component：20 parts of clay-bonded sand, 20 parts of quartz sand, white 22 parts of sand, magnesia
22 parts, 11 parts of bentonite, 7 parts of zeolite powder, 5 parts of rosin, 4 parts of land plaster, 7 parts of coal dust, 30 parts of binding agent, hardening
13 parts of agent, 7 parts of starch, 12 parts of water.
Above-mentioned material is mixed and stirred, then it is heated, persistently to it while heating
It is stirred, is heated to temperature and reaches 220 DEG C, stop heating, molding sand finished product is produced after being cooled to normal temperature.
Embodiment 3：
A kind of molding sand, it is made up of in parts by weight following component：25 parts of clay-bonded sand, 25 parts of quartz sand, white 25 parts of sand, magnesia
25 parts, 15 parts of bentonite, 8 parts of zeolite powder, 6 parts of rosin, 5 parts of land plaster, 10 parts of coal dust, 35 parts of binding agent, firmly
15 parts of agent, 10 parts of starch, 13 parts of water.
Above-mentioned material is mixed and stirred, then it is heated, persistently to it while heating
It is stirred, is heated to temperature and reaches 220 DEG C, stop heating, molding sand finished product is produced after being cooled to normal temperature.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also have
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
By appended claims and its equivalent thereof.
Claims (1)
- A kind of 1. molding sand, it is characterised in that：It is made up of in parts by weight following component：15 ~ 25 parts of clay-bonded sand, quartz sand 15 ~ 25 parts, white 20 ~ 25 parts of sand, 20 ~ 25 parts of magnesia, 8 ~ 15 parts of bentonite, 5 ~ 8 parts of zeolite powder, 3 ~ 6 parts of rosin, land plaster 2 ~ 5 parts, 5 ~ 10 parts of coal dust, 25 ~ 35 parts of binding agent, 10 ~ 15 parts of curing agent, 5 ~ 10 parts of starch, water 10 ~ 13 Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710913015.0A CN107598071A (en) | 2017-09-30 | 2017-09-30 | A kind of molding sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710913015.0A CN107598071A (en) | 2017-09-30 | 2017-09-30 | A kind of molding sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107598071A true CN107598071A (en) | 2018-01-19 |
Family
ID=61067607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710913015.0A Pending CN107598071A (en) | 2017-09-30 | 2017-09-30 | A kind of molding sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107598071A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723724A (en) * | 2018-08-18 | 2018-11-02 | 全椒县全动机械有限公司 | A kind of flywheel shell of diesel engine preparation method |
| CN109128007A (en) * | 2018-10-19 | 2019-01-04 | 含山县兴达球墨铸铁厂 | A kind of spheroidal graphite cast-iron sand formulation |
| CN109530611A (en) * | 2018-12-31 | 2019-03-29 | 广西玉柴机器股份有限公司 | A method of using Foundry mixture molding sand |
| CN110204292A (en) * | 2019-05-08 | 2019-09-06 | 山西省新绛县店头精利青铜陶品仿古工艺厂 | A kind of inside and outside model formula and preparation method thereof for bronze ware production |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874720A (en) * | 2015-05-20 | 2015-09-02 | 柳州市百田机械有限公司 | Casting molding sand |
| CN105618666A (en) * | 2014-11-07 | 2016-06-01 | 兴化市雅兰机械制造有限公司 | Molding sand |
-
2017
- 2017-09-30 CN CN201710913015.0A patent/CN107598071A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618666A (en) * | 2014-11-07 | 2016-06-01 | 兴化市雅兰机械制造有限公司 | Molding sand |
| CN104874720A (en) * | 2015-05-20 | 2015-09-02 | 柳州市百田机械有限公司 | Casting molding sand |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723724A (en) * | 2018-08-18 | 2018-11-02 | 全椒县全动机械有限公司 | A kind of flywheel shell of diesel engine preparation method |
| CN109128007A (en) * | 2018-10-19 | 2019-01-04 | 含山县兴达球墨铸铁厂 | A kind of spheroidal graphite cast-iron sand formulation |
| CN109530611A (en) * | 2018-12-31 | 2019-03-29 | 广西玉柴机器股份有限公司 | A method of using Foundry mixture molding sand |
| CN110204292A (en) * | 2019-05-08 | 2019-09-06 | 山西省新绛县店头精利青铜陶品仿古工艺厂 | A kind of inside and outside model formula and preparation method thereof for bronze ware production |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180119 |
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| WD01 | Invention patent application deemed withdrawn after publication |