CN104985111A - Corundum slag-gangue lost foam casting coating and preparation method thereof - Google Patents
Corundum slag-gangue lost foam casting coating and preparation method thereof Download PDFInfo
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- CN104985111A CN104985111A CN201510457868.9A CN201510457868A CN104985111A CN 104985111 A CN104985111 A CN 104985111A CN 201510457868 A CN201510457868 A CN 201510457868A CN 104985111 A CN104985111 A CN 104985111A
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Abstract
A lost foam casting coating with excellent use performances and low production cost is prepared from corundum slag, gangue, magnesia, diatomite, silicon carbide, silicon nitride, boron carbide, serpentine, andalusite, glycidoxy propyl trimethoxy silane, bis(P,P-bis-ethylhexyl diphosphato)ethanediolato titanate, novolac epoxy resin, dicumyl peroxide, polypropylene glycol diglycidyl ether, propylene glycol methyl ether acetate, polycrystalline alumina fibers, sodium tripolyphosphate, sodium hydroxycellulose, ethanol and water in order to realize comprehensive recycling of the corundum slag and gangue and reduction of the production cost.
Description
Technical field
The invention belongs to lost foam casting coating field, particularly relate to a kind of corundum slag-gangue lost foam casting coating and preparation method thereof.
Background technology
Technology of EPC is a kind of casting technique emerging in casting industry, lost foam casting process refers to and to be made into and required cast shape structure, the identical apperance of size with foamed plastics (EPS, ETMMA or EPMMA), brushing fireproof coating post-drying, imbed moulding in special sandbox dry sand (generally using quartz sand), pour into a mould under the certain negative pressure state of maintenance, apperance is by thermal evaporation decomposition, and molten metal constantly occupies final molding after modal position.Lost foam casting is mainly called dry sand cavityless casting, vacuum full mold casting at home, and the external EPC of abbreviation casts.
Lost foam casting process the most ripe is at present the batch production for automobile casting, and the product produced has aluminium alloy castings (as air inlet pipe, gray iron etc.) and ironcasting (as bent axle, cylinder cap, case of transmission, blast pipe etc.).Practice at home and abroad proves, lost foam casting has huge development potentiality in production automobile casting.Current, the automobile work of China is in developing period, estimates that automobile casting output has increase by a relatively large margin within from now on period, simultaneously will be stricter to the requirement of automobile casting quality.The development of auto industry, for China's casting industry brings opportunities and challenges, also brings new opportunity for promoting in China and developing Technology of EPC.
Lost foam casting is for producing success or not in enormous quantities, and 50% depends on apperance, and 30% depends on coating, and 20% depends on other technological factor.Undoubtedly, coating obtains the requisite process procedure of premium casting, and research and production confirm all, and for lost foam casting process, coating can make its potentiality succeeded greatly increase.Abroad to the research starting comparatively morning of lost foam casting coating, oneself is through there being the coating of some commodity, but price is partially expensive, causes production cost to improve, and limits the development of lost foam casting process to a certain extent.At present, existing Duo Jia colleges and universities of China and research unit carry out the research and development of the links such as model material, moulding process, coating technology, tooling device for lost foam casting, obtain certain achievement, such as, but still have larger gap compared with abroad, the commercialized degree of coating is very poor.Therefore, for promoting applying of this advanced manufacturing technology of lost foam casting, in conjunction with Domestic Resources situation, start with from each constituent species and the impact of addition on coating property of studying coating, the cost of the applicable China's national situation of development is low, the measured lost foam casting coating of matter, and the production domesticization realizing lost foam casting coating is very important.
Summary of the invention
The object of this invention is to provide one and can overcome above-mentioned defect, utilize corundum slag-gangue production and application function admirable, lost foam casting coating that production cost is low, to reach comprehensive reutilization corundum slag-gangue and to reduce the object of producing lost foam casting coating cost.
For achieving the above object, the present invention adopts following technical scheme:
A kind of corundum slag-gangue lost foam casting coating, it is characterized in that, described lost foam casting coating is made up of the raw material of following weight portion:
Corundum slag 55-60 part
Gangue 50-54 part
Magnesia 25-28 part
Diatomite 7-10 part
Carborundum 6-8 part
Silicon nitride 2 ~ 5 parts
Boron carbide 2-5 part
Serpentine 2-5 part
Andalusite 2 ~ 4 parts
Glycidyl ether oxygen propyl trimethoxy silicane 4-7 part
Two (dioctyl pyrophosphate) ethylene titanate esters 6-10 part
Novolac epoxy resin 2-4 part
Cumyl peroxide 0.3-0.6 part
Polypropylene glycol diglycidyl ether 0.4-0.6 part
1-Methoxy-2-propyl acetate 0.3-0.6 part
Polycrystalline alumina fiber 2 ~ 3 parts
Sodium phosphate trimer 1 ~ 3 part
Hydroxy cellulose sodium 2 ~ 3 parts
Ethanol 30-40 part
Water 8-15 part;
The chemical composition of described corundum slag is Al
2o
360-87wt%, CaO 4-11wt%, MgO 8-14wt%;
The chemical composition of described gangue is SiO
250 ~ 55wt%, Al
2o
38 ~ 14wt%, CaO 0.4 ~ 0.6wt%, Fe
2o
32 ~ 3wt%, MgO 1 ~ 3wt%, C 8-25wt%;
Content of magnesia >=95wt% in described magnesia.
The preparation method of described corundum slag-gangue lost foam casting coating, is characterized in that, comprise the following steps:
1) 55-60 part corundum slag, 50-54 part gangue, 25-28 part magnesia, 7-10 part diatomite, 6-8 part carborundum, 2 ~ 5 parts of silicon nitrides, 2 ~ 5 boron carbides, 2 ~ 5 parts of serpentines, 2 ~ 4 parts of andalusites are put into ball mill ball milling 2 hours, mix, then sieve, obtain the mixed material of below 200 orders;
2) reactor is opened, 4-7 part glycidyl ether oxygen propyl trimethoxy silicane, 6-10 part two (dioctyl pyrophosphate) ethylene titanate esters, 30-40 part ethanol, 8-15 part water are joined in reactor, under agitation be hydrolyzed reaction, rotating speed is 1200r/min, reaction temperature is 80 DEG C, mixing time is 30min, obtains the alcohol solution of coupling agent;
3) step 1) gained mixed material material is joined step 2) in coupling agent alcohol solution in, at 80 DEG C stir 2 hours; And then 2-4 part novolac epoxy resin, 0.3-0.6 part cumyl peroxide, 0.4-0.6 part polypropylene glycol diglycidyl ether, 0.3-0.6 part 1-Methoxy-2-propyl acetate, 2 ~ 3 parts of polycrystalline alumina fibers, 1 ~ 3 part of sodium phosphate trimer, 2 ~ 3 parts of hydroxy cellulose sodiums are joined in reactor, continue to stir 30min, i.e. obtained corundum slag-gangue lost foam casting coating.
Compared with prior art, its advantage is in the present invention:
1) make use of the industrial solid castoff such as corundum slag, gangue and prepare lost foam casting coating preparing in coating process, greatly reduce the manufacturing cost of refractory material;
2) and by glycidyl ether oxygen propyl trimethoxy silicane and two (dioctyl pyrophosphate) ethylene titanate esters, surface modification treatment has been carried out to corundum slag, gangue, magnesia, diatomite, carborundum, silicon nitride, boron carbide, serpentine, andalusite, improve caking property and the dispersiveness of material and base-material, at high temperature structure is more stable to make lost foam casting coating, substantially increases lost foam casting coating fire endurance.
Detailed description of the invention
Embodiment 1
A kind of corundum slag-gangue lost foam casting coating, it is characterized in that, described lost foam casting coating is made up of the raw material of following weight portion:
Corundum slag 55 parts
Gangue 50 parts
25 parts, magnesia
7 parts, diatomite
6 parts, carborundum
Silicon nitride 2 parts
Boron carbide 2 parts
2 parts, serpentine
Andalusite 2 parts
Glycidyl ether oxygen propyl trimethoxy silicane 4 parts
Two (dioctyl pyrophosphate) ethylene titanate esters 6 parts
Novolac epoxy resin 2 parts
Cumyl peroxide 0.3 part
Polypropylene glycol diglycidyl ether 0.4 part
1-Methoxy-2-propyl acetate 0.3 part
Polycrystalline alumina fiber 2 parts
Sodium phosphate trimer 1 part
Hydroxy cellulose sodium 2 parts
Ethanol 30 parts
8 parts, water;
The preparation method of described corundum slag-gangue lost foam casting coating, comprises the following steps:
1) 55 parts of corundum slags, 50 parts of gangues, 25 parts of magnesia, 7 parts of diatomite, 6 parts of carborundum, 2 parts of silicon nitrides, 2 boron carbides, 2 parts of serpentines, 2 parts of andalusites are put into ball mill ball milling 2 hours, mix, then sieve, obtain the mixed material of below 200 orders;
2) reactor is opened, 4 parts of glycidyl ether oxygen propyl trimethoxy silicanes, 6 part of two (dioctyl pyrophosphate) ethylene titanate esters, 30 parts of ethanol, 8 parts of water are joined in reactor, under agitation be hydrolyzed reaction, rotating speed is 1200r/min, reaction temperature is 80 DEG C, mixing time is 30min, obtains the alcohol solution of coupling agent;
3) step 1) gained mixed material material is joined step 2) in coupling agent alcohol solution in, at 80 DEG C stir 2 hours; And then 2 parts of novolac epoxy resins, 0.3 part of cumyl peroxide, 0.4 part of polypropylene glycol diglycidyl ether, 0.3 part of 1-Methoxy-2-propyl acetate, 2 parts of polycrystalline alumina fibers, 1 part of sodium phosphate trimer, 2 parts of hydroxy cellulose sodiums are joined in reactor, continue to stir 30min, i.e. obtained corundum slag-gangue lost foam casting coating.
Embodiment 2
A kind of corundum slag-gangue lost foam casting coating, it is characterized in that, described lost foam casting coating is made up of the raw material of following weight portion:
Corundum slag 60 parts
Gangue 54 parts
28 parts, magnesia
10 parts, diatomite
8 parts, carborundum
Silicon nitride 5 parts
Boron carbide 5 parts
5 parts, serpentine
Andalusite 4 parts
Glycidyl ether oxygen propyl trimethoxy silicane 7 parts
Two (dioctyl pyrophosphate) ethylene titanate esters 10 parts
Novolac epoxy resin 4 parts
Cumyl peroxide 0.6 part
Polypropylene glycol diglycidyl ether 0.6 part
1-Methoxy-2-propyl acetate 0.6 part
Polycrystalline alumina fiber 3 parts
Sodium phosphate trimer 3 parts
Hydroxy cellulose sodium 3 parts
Ethanol 40 parts
15 parts, water;
The preparation method of described corundum slag-gangue lost foam casting coating, comprises the following steps:
1) 60 parts of corundum slags, 54 parts of gangues, 28 parts of magnesia, 10 parts of diatomite, 8 parts of carborundum, 5 parts of silicon nitrides, 5 boron carbides, 5 parts of serpentines, 4 parts of andalusites are put into ball mill ball milling 2 hours, mix, then sieve, obtain the mixed material of below 200 orders;
2) reactor is opened, 7 parts of glycidyl ether oxygen propyl trimethoxy silicanes, 10 part of two (dioctyl pyrophosphate) ethylene titanate esters, 40 parts of ethanol, 15 parts of water are joined in reactor, under agitation be hydrolyzed reaction, rotating speed is 1200r/min, reaction temperature is 80 DEG C, mixing time is 30min, obtains the alcohol solution of coupling agent;
3) step 1) gained mixed material material is joined step 2) in coupling agent alcohol solution in, at 80 DEG C stir 2 hours; And then 4 parts of novolac epoxy resins, 0.6 part of cumyl peroxide, 0.6 part of polypropylene glycol diglycidyl ether, 0.6 part of 1-Methoxy-2-propyl acetate, 3 parts of polycrystalline alumina fibers, 3 parts of sodium phosphate trimers, 3 parts of hydroxy cellulose sodiums are joined in reactor, continue to stir 30min, i.e. obtained corundum slag-gangue lost foam casting coating.
Claims (3)
1. corundum slag-gangue lost foam casting coating, is characterized in that, described lost foam casting coating is made up of the raw material of following weight portion:
Corundum slag 55-60 part
Gangue 50-54 part
Magnesia 25-28 part
Diatomite 7-10 part
Carborundum 6-8 part
Silicon nitride 2 ~ 5 parts
Boron carbide 2-5 part
Serpentine 2-5 part
Andalusite 2 ~ 4 parts
Glycidyl ether oxygen propyl trimethoxy silicane 4-7 part
Two (dioctyl pyrophosphate) ethylene titanate esters 6-10 part
Novolac epoxy resin 2-4 part
Cumyl peroxide 0.3-0.6 part
Polypropylene glycol diglycidyl ether 0.4-0.6 part
1-Methoxy-2-propyl acetate 0.3-0.6 part
Polycrystalline alumina fiber 2 ~ 3 parts
Sodium phosphate trimer 1 ~ 3 part
Hydroxy cellulose sodium 2 ~ 3 parts
Ethanol 30-40 part
Water 8-15 part.
2. lost foam casting coating as described in claim 1, it is characterized in that, the chemical composition of described corundum slag is Al
2o
360-87wt%, CaO 4-11wt%, MgO 8-14wt%;
The chemical composition of described gangue is SiO
250 ~ 55wt%, Al
2o
38 ~ 14wt%, CaO 0.4 ~ 0.6wt%, Fe
2o
32 ~ 3wt%, MgO 1 ~ 3wt%, C 8-25wt%;
Content of magnesia >=95wt% in described magnesia.
3. the preparation method of corundum slag according to claim 1 and 2-gangue lost foam casting coating, is characterized in that, comprise the following steps:
1) 55-60 part corundum slag, 50-54 part gangue, 25-28 part magnesia, 7-10 part diatomite, 6-8 part carborundum, 2 ~ 5 parts of silicon nitrides, 2 ~ 5 boron carbides, 2 ~ 5 parts of serpentines, 2 ~ 4 parts of andalusites are put into ball mill ball milling 2 hours, mix, then sieve, obtain the mixed material of below 200 orders;
2) reactor is opened, 4-7 part glycidyl ether oxygen propyl trimethoxy silicane, 6-10 part two (dioctyl pyrophosphate) ethylene titanate esters, 30-40 part ethanol, 8-15 part water are joined in reactor, under agitation be hydrolyzed reaction, rotating speed is 1200r/min, reaction temperature is 80 DEG C, mixing time is 30min, obtains the alcohol solution of coupling agent;
3) step 1) gained mixed material material is joined step 2) in coupling agent alcohol solution in, at 80 DEG C stir 2 hours; And then 2-4 part novolac epoxy resin, 0.3-0.6 part cumyl peroxide, 0.4-0.6 part polypropylene glycol diglycidyl ether, 0.3-0.6 part 1-Methoxy-2-propyl acetate, 2 ~ 3 parts of polycrystalline alumina fibers, 1 ~ 3 part of sodium phosphate trimer, 2 ~ 3 parts of hydroxy cellulose sodiums are joined in reactor, continue to stir 30min, i.e. obtained corundum slag-gangue lost foam casting coating.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583365A (en) * | 2015-12-30 | 2016-05-18 | 青岛博泰美联化工技术有限公司 | Evaporative pattern casting method for diesel engine casing |
| CN105583357A (en) * | 2016-02-01 | 2016-05-18 | 安徽埃斯克制泵有限公司 | Evanescent mode paint for pump body casting |
| CN105618669A (en) * | 2016-02-01 | 2016-06-01 | 安徽埃斯克制泵有限公司 | Refractory coating for sand casting of pump body |
| CN105750481A (en) * | 2016-03-31 | 2016-07-13 | 宁夏共享化工有限公司 | Water-based paint preventing large steel casting orange peel defect |
| CN106424538A (en) * | 2016-08-31 | 2017-02-22 | 金塔县黑石矿业有限责任公司 | Method for preparing anti-permeation burnt-on sand casting coating with andalusite as raw material |
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| CN104439043A (en) * | 2014-11-08 | 2015-03-25 | 芜湖市鸿坤汽车零部件有限公司 | Sesame sauce residue/coal gangue compounded alcohol group casting paint and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583365A (en) * | 2015-12-30 | 2016-05-18 | 青岛博泰美联化工技术有限公司 | Evaporative pattern casting method for diesel engine casing |
| CN105583357A (en) * | 2016-02-01 | 2016-05-18 | 安徽埃斯克制泵有限公司 | Evanescent mode paint for pump body casting |
| CN105618669A (en) * | 2016-02-01 | 2016-06-01 | 安徽埃斯克制泵有限公司 | Refractory coating for sand casting of pump body |
| CN105750481A (en) * | 2016-03-31 | 2016-07-13 | 宁夏共享化工有限公司 | Water-based paint preventing large steel casting orange peel defect |
| CN106424538A (en) * | 2016-08-31 | 2017-02-22 | 金塔县黑石矿业有限责任公司 | Method for preparing anti-permeation burnt-on sand casting coating with andalusite as raw material |
| CN106424538B (en) * | 2016-08-31 | 2018-12-11 | 金塔县黑石矿业有限责任公司 | A method of penetration-prevention cast paint is prepared by raw material of andalusite |
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Application publication date: 20151021 |
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