CN107457345A - A kind of clay green-sand without coal dust - Google Patents
A kind of clay green-sand without coal dust Download PDFInfo
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- CN107457345A CN107457345A CN201710688356.2A CN201710688356A CN107457345A CN 107457345 A CN107457345 A CN 107457345A CN 201710688356 A CN201710688356 A CN 201710688356A CN 107457345 A CN107457345 A CN 107457345A
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- parts
- sand
- coal dust
- clay green
- yellow soil
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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
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- Chemical & Material Sciences (AREA)
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- Mold Materials And Core Materials (AREA)
Abstract
The invention belongs to environment-friendly type clay green-sand technical field, and in particular to a kind of clay green-sand without coal dust, include by weight：Natural 100 parts of yellow soil, 47 parts of superfine sodium chloride powder, 35 parts of water, 8 14 parts of compound additive.The present invention has advantages below compared with prior art：The present invention contributes to heat conduction, change yellow soil influences on the Warm status of casting mold, yellow soil is produced humidity sintering, helps to obtain the high casting of surface quality by adding superfine sodium chloride powder in natural yellow soil；Acted on again by compound additive, envelope can be formed on molding sand surface can effectively solidify rapidly, improve the operability of casting mold, it can effectively suppress simultaneously or prevent to fracture when the demoulding after steel casting mold, carrying, the generation of slight crack, qualification rate during casting mold casting can be effectively improved, gained molding sand heat-resisting quantity is good, easy defeated and dispersed, easy to clean, reusable, suitable for promoting the use of.
Description
Technical field
The invention belongs to environment-friendly type clay green-sand technical field, and in particular to a kind of clay green-sand without coal dust.
Background technology
At present, the 80% of total casting is accounted for the casting of molding sand Foundry Production, the Modeling Material of sand casting occupies in production
Critical role, directly affect energy resource consumption, the environmental pollution of Foundry Production, and the quality of casting, production efficiency and cost, state
Inside and outside widely used coal dust clay green-sand, typically mixed, had with water by roughing sand, binding agent, coal dust additive etc.
Certain Sand sticking-resistant effect and the advantages of the cost of material is low, production efficiency is high, but its consumption is big, discharge is serious, is casting
Journey coal dust firing decomposes toxic gas pollution, and in order to avoid casting scab and burning into sand class defect, addition one is needed in green-sand
Quantitative coal dust, the volatile matter in coal dust are pyrolyzed into one layer of kindhearted carbon film light carbon and are coated in casting mold-gold under the high temperature conditions
Belong on interface, the barrier action of physics is played to metal, while it is not also soaked by molten iron, can prevent the infiltration of molten iron, prevents from gluing
The generation of sand class defect, another critical nature of coal dust is exactly that softening coking occurs at 500-600 DEG C, this to be filled in gravel
Spongy material between hole, the violent expansion of quartz sand generation at 600 DEG C or so can be absorbed, so as to reduce due to molding sand
Expand and caused scab defectses, but coal dust easily causes pollution in use, resource scarcity, and have to human body larger
Harm, therefore, coal dust clay green-sand is not suitable for the needs of foundary industry scientific development and the environment of current consumption reduction emission reduction is protected
Shield policy, it is therefore desirable to further be studied the clay green-sand without coal dust.
The content of the invention
The purpose of the present invention is to be directed to the problem of existing, there is provided a kind of clay green-sand without coal dust.
The present invention is achieved by the following technical solutions：A kind of clay green-sand without coal dust, includes by weight：
Natural 100 parts of yellow soil, superfine sodium chloride powder 4-7 parts, water 3-5 parts, compound additive 8-14 parts；
The compound additive includes the raw material of following parts by weight by weight：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses 24-
28 parts, sodium-analcime powder 14-20 parts, cyclomethicone 6-7 parts, calgon 2-4 parts；
Silicon oxide-containing 69wt%, salic 24wt%, 2.3wt% containing iron oxide in the natural yellow soil, remaining is impurity.
As further improvement of these options, the pi-allyl line style phenolic aldehyde/BMI copolymer resinses and cyclohexyl methyl silica
The weight ratio of alkane is 4:1.
As further improvement of these options, the particle diameter of the superfine sodium chloride powder is 200-600nm.
As further improvement of these options, the pi-allyl line style phenolic aldehyde/BMI copolymer resins tensile strengths are
471MPa, stretch modulus 22.4GPa, bending strength 445MPa, impact strength 169MPa.
As further improvement of these options, the sodium-analcime powder is by deionized water, diatomite, sodium hydroxide
According to mass ratio 3:2:Uniformly it is fitted into after 1 mixing in autoclave, crystallization 24h is obtained under the conditions of 150 DEG C in insulating box.
As further improvement of these options, the preparation method of the compound additive is：By pi-allyl line style phenol
After aldehyde/BMI copolymer resinses, sodium-analcime powder, cyclomethicone, calgon mixing, seal, evacuate in ball grinder
And after being passed through nitrogen, using rotating speed as 300-360 revs/min, spheroidal graphite mass ratio be 8 under conditions of ball milling 4-6 hours obtain.
As further improvement of these options, the preparation method of the clay green-sand is to shine natural yellow soil
It is dry, 30-50 mesh sieves are crossed after crushing, insulation 2 is small under conditions of being 220-260 DEG C in temperature after being mixed with superfine sodium chloride powder
When, add water after being cooled to normal temperature and compound additive is well mixed and produced.
The present invention has advantages below compared with prior art：The present invention in natural yellow soil by adding superfine sodium chloride
Powder, contribute to heat conduction, change yellow soil influences on the Warm status of casting mold, yellow soil is produced humidity sintering, helps to obtain
The high casting of surface quality；Acted on again by compound additive, can form envelope on molding sand surface can effectively solidify rapidly, improve
The operability of casting mold, while can effectively suppress or be fractureed when preventing the demoulding after steel casting mold, carrying, the generation of slight crack, can be with
Qualification rate during casting mold casting is effectively improved, gained molding sand heat-resisting quantity is good, easy defeated and dispersed, easy to clean, reusable, suitable for pushing away
It is wide to use.
Embodiment
Embodiment 1
A kind of clay green-sand without coal dust, includes by weight：Natural 100 parts of yellow soil, 5 parts of superfine sodium chloride powder,
4 parts of water, 11 parts of compound additive；
The compound additive includes the raw material of following parts by weight by weight：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses 26
Part, 17 parts of sodium-analcime powder, 6.5 parts of cyclomethicone, 3 parts of calgon；
Silicon oxide-containing 69wt%, salic 24wt%, 2.3wt% containing iron oxide in the natural yellow soil, remaining is impurity.
Wherein, the weight ratio of the pi-allyl line style phenolic aldehyde/BMI copolymer resinses and cyclomethicone is 4:1；It is described super
The particle diameter of thin sodium chloride powder is 200-600nm；The pi-allyl line style phenolic aldehyde/BMI copolymer resinses tensile strength is 471MPa,
Stretch modulus is 22.4GPa, bending strength 445MPa, impact strength 169MPa；The sodium-analcime powder is by deionization
Water, diatomite, sodium hydroxide are according to mass ratio 3:2:Uniformly it is fitted into after 1 mixing in autoclave, 150 DEG C of bars in insulating box
Crystallization 24h is obtained under part.
Wherein, the preparation method of the compound additive is：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses, sodium form side are boiled
Stone flour, cyclomethicone, calgon mixing after, sealed in ball grinder, after evacuating and being passed through nitrogen, using rotating speed as
300-360 revs/min, spheroidal graphite mass ratio be 8 under conditions of ball milling 4-6 hours obtain.
Wherein, the preparation method of the clay green-sand is to dry natural yellow soil, and 30-50 mesh sieves are crossed after crushing, with
Be incubated 2 hours under conditions of being 220-260 DEG C in temperature after the mixing of superfine sodium chloride powder, be cooled to after normal temperature and add water and again
Conjunction additive is well mixed to be produced.
According to GB/T2684-2009, it is 49% to measure molding sand compact rate of molding, according to GB/T2684-2009, measures molding sand wet pressing
Intensity 0.15MPa, for pouring into a mould ZL101 parts, 100 are poured into a mould, qualified products rate is 100%.
Embodiment 2
A kind of clay green-sand without coal dust, includes by weight：Natural 100 parts of yellow soil, 4 parts of superfine sodium chloride powder,
5 parts of water, 8 parts of compound additive；
The compound additive includes the raw material of following parts by weight by weight：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses 24
Part, 20 parts of sodium-analcime powder, 6 parts of cyclomethicone, 4 parts of calgon；
Remaining content is in the same manner as in Example 1.
According to GB/T2684-2009, it is 46% to measure molding sand compact rate of molding, according to GB/T2684-2009, measures molding sand wet pressing
Intensity 0.14MPa, for pouring into a mould ZL101 parts, 100 are poured into a mould, qualified products rate is 100%.
Embodiment 3
A kind of clay green-sand without coal dust, includes by weight：Natural 100 parts of yellow soil, 7 parts of superfine sodium chloride powder,
3 parts of water, 14 parts of compound additive；
The compound additive includes the raw material of following parts by weight by weight：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses 28
Part, 14 parts of sodium-analcime powder, 7 parts of cyclomethicone, 2 parts of calgon；
Remaining content is in the same manner as in Example 1.
According to GB/T2684-2009, it is 47% to measure molding sand compact rate of molding, according to GB/T2684-2009, measures molding sand wet pressing
Intensity 0.15MPa, for pouring into a mould ZL101 parts, 100 are poured into a mould, qualified products rate is 100%.
Embodiment 4
A kind of clay green-sand without coal dust, includes by weight：Natural 100 parts of yellow soil, 4 parts of water, compound additive 11
Part；
The compound additive includes the raw material of following parts by weight by weight：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses 26
Part, 17 parts of sodium-analcime powder, 6.5 parts of cyclomethicone, 3 parts of calgon；
Remaining content is in the same manner as in Example 1.
According to GB/T2684-2009, it is 43% to measure molding sand compact rate of molding, according to GB/T2684-2009, measures molding sand wet pressing
Intensity 0.12MPa, for pouring into a mould ZL101 parts, 100 are poured into a mould, qualified products rate is 96%.
Embodiment 5
A kind of clay green-sand without coal dust, includes by weight：Natural 100 parts of yellow soil, 5 parts of superfine sodium chloride powder,
4 parts of water, 6 parts of compound additive；
The compound additive includes the raw material of following parts by weight by weight：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses 26
Part, 17 parts of sodium-analcime powder, 6.5 parts of cyclomethicone, 3 parts of calgon；
Remaining content is in the same manner as in Example 1.
According to GB/T2684-2009, it is 42% to measure molding sand compact rate of molding, according to GB/T2684-2009, measures molding sand wet pressing
Intensity 0.11MPa, for pouring into a mould ZL101 parts, 100 are poured into a mould, qualified products rate is 95%.
Embodiment 6
A kind of clay green-sand without coal dust, includes by weight：Natural 100 parts of yellow soil, 5 parts of superfine sodium chloride powder,
4 parts of water, 15 parts of compound additive；
The compound additive includes the raw material of following parts by weight by weight：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses 26
Part, 17 parts of sodium-analcime powder, 6.5 parts of cyclomethicone, 3 parts of calgon；
Remaining content is in the same manner as in Example 1.
According to GB/T2684-2009, it is 46% to measure molding sand compact rate of molding, according to GB/T2684-2009, measures molding sand wet pressing
Intensity 0.12MPa, for pouring into a mould ZL101 parts, 100 are poured into a mould, qualified products rate is 97%.
Embodiment 7
A kind of clay green-sand without coal dust, includes by weight：Natural 100 parts of yellow soil, 5 parts of superfine sodium chloride powder,
4 parts of water, 11 parts of compound additive；
The compound additive includes the raw material of following parts by weight by weight：26 parts of linear phenol-aldehyde resin, sodium-analcime powder
17 parts, 6.5 parts of cyclomethicone, 3 parts of calgon；
Remaining content is in the same manner as in Example 1.
According to GB/T2684-2009, it is 44% to measure molding sand compact rate of molding, according to GB/T2684-2009, measures molding sand wet pressing
Intensity 0.12MPa, for pouring into a mould ZL101 parts, 100 are poured into a mould, qualified products rate is 98%.
The clay green-sand reasonable mixture ratio without coal dust in the present invention, environmental protection peace are can be seen that by analyzing each group of data
Entirely, it is high for moulding by casting rate, if changing wherein component or proportioning, it can cause one to be fixed to moulding-sand property or yield rate
Ring.
Claims (7)
1. a kind of clay green-sand without coal dust, it is characterised in that include by weight：Natural 100 parts of yellow soil, ultra-fine chlorine
Change sodium powder end 4-7 parts, water 3-5 parts, compound additive 8-14 parts；
The compound additive includes the raw material of following parts by weight by weight：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses 24-
28 parts, sodium-analcime powder 14-20 parts, cyclomethicone 6-7 parts, calgon 2-4 parts；
Silicon oxide-containing 69wt%, salic 24wt%, 2.3wt% containing iron oxide in the natural yellow soil, remaining is impurity.
A kind of 2. clay green-sand without coal dust as claimed in claim 1, it is characterised in that the pi-allyl line style phenolic aldehyde/
The weight of BMI copolymer resinses and cyclomethicone ratio is 4:1.
3. a kind of clay green-sand without coal dust as claimed in claim 1, it is characterised in that the superfine sodium chloride powder
Particle diameter is 200-600nm.
A kind of 4. clay green-sand without coal dust as claimed in claim 1, it is characterised in that the pi-allyl line style phenolic aldehyde/
BMI copolymer resinses tensile strength is 471MPa, stretch modulus 22.4GPa, bending strength 445MPa, and impact strength is
169MPa。
5. a kind of clay green-sand without coal dust as claimed in claim 1, it is characterised in that the sodium-analcime powder is by going
Ionized water, diatomite, sodium hydroxide are according to mass ratio 3:2:Uniformly it is fitted into after 1 mixing in autoclave, 150 in insulating box
Crystallization 24h is obtained under the conditions of DEG C.
A kind of 6. clay green-sand without coal dust as claimed in claim 1, it is characterised in that the preparation of the compound additive
Method is：Pi-allyl line style phenolic aldehyde/BMI copolymer resinses, sodium-analcime powder, cyclomethicone, calgon are mixed
Afterwards, sealed in ball grinder, after evacuating and being passed through nitrogen, using rotating speed as 300-360 revs/min, in the bar that spheroidal graphite mass ratio is 8
Ball milling 4-6 hours obtain under part.
A kind of 7. clay green-sand without coal dust as claimed in claim 1, it is characterised in that the preparation of the clay green-sand
Method is to dry natural yellow soil, and 30-50 mesh sieves are crossed after crushing, in temperature is 220- after being mixed with superfine sodium chloride powder
2 hours are incubated under conditions of 260 DEG C, water is added after being cooled to normal temperature and compound additive is well mixed and produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710688356.2A CN107457345A (en) | 2017-08-12 | 2017-08-12 | A kind of clay green-sand without coal dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710688356.2A CN107457345A (en) | 2017-08-12 | 2017-08-12 | A kind of clay green-sand without coal dust |
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| Publication Number | Publication Date |
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| CN107457345A true CN107457345A (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710688356.2A Pending CN107457345A (en) | 2017-08-12 | 2017-08-12 | A kind of clay green-sand without coal dust |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825138A (en) * | 2018-07-12 | 2018-11-16 | 河北航华金刚石制品有限公司 | A method of reamer graphite mouth of a river piece is replaced using compressed tablets |
| CN109158527A (en) * | 2018-10-31 | 2019-01-08 | 谷函（杭州）新材料科技有限公司 | A kind of no coal environmental protection casting sand additive and its purposes in molding sand |
| CN109580421A (en) * | 2019-01-03 | 2019-04-05 | 东北大学 | The volatile matter release characteristics index calculation method of difficult pyrolytic material |
| CN110465618A (en) * | 2019-09-17 | 2019-11-19 | 含山县荣盛机械铸造有限公司 | A kind of preparation method of high-strength environment-friendly clay green-sand |
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| GB1024557A (en) * | 1963-07-05 | 1966-03-30 | Foseco Int | Production of moulded articles |
| CN1089195A (en) * | 1992-09-21 | 1994-07-13 | 克洛德·瓦特斯 | investment casting refractory material |
| CN101952094A (en) * | 2007-12-21 | 2011-01-19 | 雅士兰-南方化学-科恩费斯特有限责任公司 | Production of molded parts for casting purposes |
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2017
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1024557A (en) * | 1963-07-05 | 1966-03-30 | Foseco Int | Production of moulded articles |
| CN1089195A (en) * | 1992-09-21 | 1994-07-13 | 克洛德·瓦特斯 | investment casting refractory material |
| CN101952094A (en) * | 2007-12-21 | 2011-01-19 | 雅士兰-南方化学-科恩费斯特有限责任公司 | Production of molded parts for casting purposes |
| CN105583355A (en) * | 2016-02-01 | 2016-05-18 | 安徽埃斯克制泵有限公司 | Molding sand binder for pump body sand casting |
Non-Patent Citations (2)
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| 宗倩等: "黄壤土天然粘土砂湿型铸造工艺的应用研究", 《铸造》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825138A (en) * | 2018-07-12 | 2018-11-16 | 河北航华金刚石制品有限公司 | A method of reamer graphite mouth of a river piece is replaced using compressed tablets |
| CN109158527A (en) * | 2018-10-31 | 2019-01-08 | 谷函（杭州）新材料科技有限公司 | A kind of no coal environmental protection casting sand additive and its purposes in molding sand |
| CN109580421A (en) * | 2019-01-03 | 2019-04-05 | 东北大学 | The volatile matter release characteristics index calculation method of difficult pyrolytic material |
| CN109580421B (en) * | 2019-01-03 | 2021-11-30 | 东北大学 | Method for calculating volatile component release characteristic index of difficultly pyrolyzed material |
| CN110465618A (en) * | 2019-09-17 | 2019-11-19 | 含山县荣盛机械铸造有限公司 | A kind of preparation method of high-strength environment-friendly clay green-sand |
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Application publication date: 20171212 |
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