CN102728779A - Molding sand utilizing waste sawdust and preparation method thereof - Google Patents
Molding sand utilizing waste sawdust and preparation method thereof Download PDFInfo
- Publication number
- CN102728779A CN102728779A CN2012101870101A CN201210187010A CN102728779A CN 102728779 A CN102728779 A CN 102728779A CN 2012101870101 A CN2012101870101 A CN 2012101870101A CN 201210187010 A CN201210187010 A CN 201210187010A CN 102728779 A CN102728779 A CN 102728779A
- Authority
- CN
- China
- Prior art keywords
- sand
- sawdust
- molding sand
- acrylic resin
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a molding sand utilizing waste sawdust and a preparation method thereof. The method is as below: weighing raw materials of, by weight, 80-90 parts of sawdust, 30-40 parts of quartz sand, 10-20 parts of recycling sand, 3-5 parts of corundum mullite sand, 1-3 parts of wood fiber, and 1.5-3 parts of modified acrylic resin; mixing the raw materials evenly; carrying out dry mixing for 3-5 minutes; adding water; carrying out wet mixing for 5-8 minutes; and fully mixing and discharging the sand. The molding sand utilizing waste sawdust of the invention has reasonable formula; the usage of waste sawdust as sand can change waste into treasure; addition of wood fiber can obviously enhance the strength of the molding sand, as well as enhance wet strength the sand, so as to gain good air permeability and benefit improvement on the quality of castings.
Description
Technical field
The present invention relates to casting technology field, be specifically related to a kind of molding sand that utilizes useless sawdust and preparation method thereof.
Background technology
The effect of molding sand in Foundry Production is very important; The casting wasted product that causes because of the poor quality of molding sand accounts for 30～50% of the total waste product of foundry goods; Usually the requirement to molding sand has intensity and heat endurance, flowability, plasticity, gas permeability and collapsibility; Promptly whether molding sand destroys easily behind casting solidification, the performance of whether removing from foundry goods easily.
At present, in the preparation process of molding sand, generally be mixed and made into by a certain percentage by fresh sand, old sand, binding agent and auxiliary material.
Summary of the invention
For deficiency and the defective of alleviating prior art, the object of the present invention is to provide a kind of molding sand that utilizes useless sawdust and preparation method thereof.
The present invention adopts following technical scheme to achieve these goals:
Utilize the molding sand of useless sawdust, its constitutive material weight portion is: sawdust 80-90, quartz sand 30-40, return sand 10-20, corundum-mullite sand 3-5, wood fibre 1-3, acrylic resin modified 1.5-3, water is an amount of.
Utilize the molding sand of useless sawdust, its constitutive material weight portion is: sawdust 85, quartz sand 35, return sand 15, corundum-mullite sand 4, wood fibre 2, acrylic resin modified 2.2, water is an amount of.
Utilize the preparation method of the molding sand of useless sawdust, take by weighing sawdust, quartz sand, return sand, corundum-mullite sand, wood fibre, acrylic resin modified, mix by the weight portion of constitutive material; Do and mixed 3-5 minute; Add entry again, wet mixing 5-8 minute, fully mixing shaked out.
Described acrylic resin modified by constitutive material tertiary ethylene carbonate 10-12, styrene 10-12, butyl acrylate 8-10, allyloxy hydroxypropyl azochlorosulfonate acid sodium 1-2, polyvinyl alcohol 4-6, Permethyl 99A base mercaptan 0.1-0.2, sodium peroxydisulfate 0.3-0.5 and solvent butyl acetate 40-45, preparation method: solvent butyl acetate is added in the agitated reactor inflated with nitrogen protection; Again other reaction raw materials beyond the sodium peroxydisulfate is added in the agitated reactor, stir, be heated to 140-150 ℃; Sodium peroxydisulfate is added in the agitated reactor; Stir, insulation reaction 3-4 hour, be cooled to more than 90 ℃; Filter, obtain.
Advantage of the present invention:
The sand formulation of the useless sawdust of utilization of the present invention is reasonable, utilizes useless sawdust as molding sand, can turn waste into wealth; Increase wood fibre, can increase the intensity of molding sand, effect is obvious; Strengthened the wet strength of molding sand simultaneously, good permeability helps improving the quality of foundry goods.
The specific embodiment
Embodiment 1: utilize the molding sand of useless sawdust, its constitutive material weight portion is: sawdust 80, quartz sand 30, return sand 10, corundum-mullite sand 3, wood fibre 1, acrylic resin modified 1.5, water is an amount of.
Utilize the preparation method of the molding sand of useless sawdust, take by weighing sawdust, quartz sand, return sand, corundum-mullite sand, wood fibre, acrylic resin modified, mix by the weight portion of constitutive material; Do and mixed 3-5 minute; Add entry again, wet mixing 5-8 minute, fully mixing shaked out.
Embodiment 2: utilize the molding sand of useless sawdust, its constitutive material weight portion is: sawdust 85, quartz sand 35, return sand 15, corundum-mullite sand 4, wood fibre 2, acrylic resin modified 2.2, water is an amount of.
Utilize the preparation method of the molding sand of useless sawdust, take by weighing sawdust, quartz sand, return sand, corundum-mullite sand, wood fibre, acrylic resin modified, mix by the weight portion of constitutive material; Do and mixed 3-5 minute; Add entry again, wet mixing 5-8 minute, fully mixing shaked out.
Embodiment 3: utilize the molding sand of useless sawdust, its constitutive material weight portion is: sawdust 90, quartz sand 40, return sand 20, corundum-mullite sand 5, wood fibre 3, acrylic resin modified 3, water is an amount of.
Utilize the preparation method of the molding sand of useless sawdust, take by weighing sawdust, quartz sand, return sand, corundum-mullite sand, wood fibre, acrylic resin modified, mix by the weight portion of constitutive material; Do and mixed 3-5 minute; Add entry again, wet mixing 5-8 minute, fully mixing shaked out.
The moulding-sand property that the present invention makes: green compression strength >=0.13Mpa, gas permeability >=80, moisture 3.3-3.8, compact rate of molding 45-55, shatter index (j :) 83-85%.
Claims (4)
1. molding sand that utilizes useless sawdust, it is characterized in that its constitutive material weight portion is: sawdust 80-90, quartz sand 30-40, return sand 10-20, corundum-mullite sand 3-5, wood fibre 1-3, acrylic resin modified 1.5-3, water is an amount of.
2. the molding sand of the useless sawdust of utilization according to claim 1 is characterized in that its constitutive material weight portion is: sawdust 85, quartz sand 35, return sand 15, corundum-mullite sand 4, wood fibre 2, acrylic resin modified 2.2, water is an amount of.
3. the preparation method of the molding sand of the useless sawdust of a utilization as claimed in claim 1; It is characterized in that: the weight portion by constitutive material takes by weighing sawdust, quartz sand, return sand, corundum-mullite sand, wood fibre, acrylic resin modified; Mix, do and mixed 3-5 minute, add entry again; Wet mixing 5-8 minute, fully mixing shaked out.
4. the molding sand of the useless sawdust of utilization according to claim 1 is characterized in that: described acrylic resin modified by constitutive material tertiary ethylene carbonate 10-12, styrene 10-12, butyl acrylate 8-10, allyloxy hydroxypropyl azochlorosulfonate acid sodium 1-2, polyvinyl alcohol 4-6, Permethyl 99A base mercaptan 0.1-0.2, sodium peroxydisulfate 0.3-0.5 and solvent butyl acetate 40-45, preparation method: solvent butyl acetate is added in the agitated reactor; The inflated with nitrogen protection; Again other reaction raw materials beyond the sodium peroxydisulfate is added in the agitated reactor, stir, be heated to 140-150 ℃; Sodium peroxydisulfate is added in the agitated reactor; Stir, insulation reaction 3-4 hour, be cooled to more than 90 ℃; Filter, obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101870101A CN102728779A (en) | 2012-06-08 | 2012-06-08 | Molding sand utilizing waste sawdust and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101870101A CN102728779A (en) | 2012-06-08 | 2012-06-08 | Molding sand utilizing waste sawdust and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102728779A true CN102728779A (en) | 2012-10-17 |
Family
ID=46985472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101870101A Pending CN102728779A (en) | 2012-06-08 | 2012-06-08 | Molding sand utilizing waste sawdust and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102728779A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521684A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Corundum-mullite modified molding sand and preparation method thereof |
| CN104475645A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | High pressure modeling molding sand and preparation method thereof |
| CN104475656A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-caking foundry molding sand and preparation method thereof |
| CN104475658A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Middle-small cast iron molding sand and preparation method thereof |
| CN104475650A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-adhesion cast molding sand and preparation method thereof |
| CN104959525A (en) * | 2015-07-13 | 2015-10-07 | 中国第一汽车股份有限公司 | Novel preparing method for vein-free casting sand |
| CN105033166A (en) * | 2015-07-06 | 2015-11-11 | 安徽三联泵业股份有限公司 | Modified pump body casting foundry sand with furan resin loaded with nanosized zeolite |
| CN105921683A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | Molding sand used for magnesium alloy castings and preparing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB729057A (en) * | 1951-10-01 | 1955-05-04 | Goodrich Co B F | Improvements in or relating to a sand mold and core composition and method of makingsame |
| US3007893A (en) * | 1959-04-09 | 1961-11-07 | Goodrich Co B F | Sand core composition comprising sand and salt of acrylic acid-acrylonitrile copolymer |
| GB1016473A (en) * | 1963-04-19 | 1966-01-12 | Hitachi Ltd | Fabrication of exothermic,self-hardening mould |
| US3367393A (en) * | 1964-09-04 | 1968-02-06 | Howe Sound Co | Thermally insulated shell mold and method for making same |
| CN101912946A (en) * | 2010-07-01 | 2010-12-15 | 刘昆湘 | JDY material casting sand core |
| CN101935425A (en) * | 2010-09-16 | 2011-01-05 | 江门市制漆厂有限公司 | Modified polyurethane (PU) acrylic resin and preparation method thereof |
| CN102357647A (en) * | 2011-10-24 | 2012-02-22 | 大连交通大学 | Environmentally-friendly magnesia sand for casting and preparation process thereof |
-
2012
- 2012-06-08 CN CN2012101870101A patent/CN102728779A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB729057A (en) * | 1951-10-01 | 1955-05-04 | Goodrich Co B F | Improvements in or relating to a sand mold and core composition and method of makingsame |
| US3007893A (en) * | 1959-04-09 | 1961-11-07 | Goodrich Co B F | Sand core composition comprising sand and salt of acrylic acid-acrylonitrile copolymer |
| GB1016473A (en) * | 1963-04-19 | 1966-01-12 | Hitachi Ltd | Fabrication of exothermic,self-hardening mould |
| US3367393A (en) * | 1964-09-04 | 1968-02-06 | Howe Sound Co | Thermally insulated shell mold and method for making same |
| CN101912946A (en) * | 2010-07-01 | 2010-12-15 | 刘昆湘 | JDY material casting sand core |
| CN101935425A (en) * | 2010-09-16 | 2011-01-05 | 江门市制漆厂有限公司 | Modified polyurethane (PU) acrylic resin and preparation method thereof |
| CN102357647A (en) * | 2011-10-24 | 2012-02-22 | 大连交通大学 | Environmentally-friendly magnesia sand for casting and preparation process thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521684A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Corundum-mullite modified molding sand and preparation method thereof |
| CN104475645A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | High pressure modeling molding sand and preparation method thereof |
| CN104475656A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-caking foundry molding sand and preparation method thereof |
| CN104475658A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Middle-small cast iron molding sand and preparation method thereof |
| CN104475650A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-adhesion cast molding sand and preparation method thereof |
| CN105033166A (en) * | 2015-07-06 | 2015-11-11 | 安徽三联泵业股份有限公司 | Modified pump body casting foundry sand with furan resin loaded with nanosized zeolite |
| CN104959525A (en) * | 2015-07-13 | 2015-10-07 | 中国第一汽车股份有限公司 | Novel preparing method for vein-free casting sand |
| CN105921683A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | Molding sand used for magnesium alloy castings and preparing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102728779A (en) | Molding sand utilizing waste sawdust and preparation method thereof | |
| CN102728777B (en) | Multicomponent mixed casting molding sand and preparation method thereof | |
| CN102728780B (en) | Water glass molding sand and producing method thereof | |
| CN102728775B (en) | Molding sand containing wood fiber and production method thereof | |
| CN102728776A (en) | Low-cost environment-friendly molding sand and preparation method thereof | |
| CN102728784B (en) | Clay-type molding sand and preparation method thereof | |
| CN102503233A (en) | Novel liquid cement grinding aid and preparation method thereof | |
| CN103302233A (en) | Thermosetting casting binder as well as preparation method and application thereof | |
| CN102728783A (en) | Molding sand using dextrin as binder and preparation method thereof | |
| CN103521690A (en) | Easily-collapsible mud core molding sand and preparation method thereof | |
| CN102728781B (en) | Molding sand using cement as binder and producing method thereof | |
| CN102060461B (en) | Cement composite grinding aid and preparation method thereof | |
| CN102219526A (en) | Phenolic resin for magnesia carbon brick and preparation method thereof | |
| CN103056281A (en) | Preparation method of molding sands | |
| CN105018170A (en) | Highly-efficient composite briquette binder | |
| CN103272987A (en) | Molding sand manufactured from silica sand as main material and manufacturing method thereof | |
| CN102776047B (en) | Method for molding calcium-base industrial powder | |
| CN102969116A (en) | UV (ultraviolet) solidified bonding magnet and preparation method thereof | |
| CN103194012B (en) | Method for preparing rubber reinforcing agent from red mud | |
| CN111020183A (en) | Binder for metallurgical cold-pressed pellets, cold-pressed pellets containing same and preparation method thereof | |
| CN109895212A (en) | A kind of processing method producing formaldehydeless environmental and ecological plate using rice straw | |
| CN102153719B (en) | Furan resin for hot core box | |
| CN103639355A (en) | Iron casting clay surface dry molding sand | |
| CN104308073B (en) | A kind of production method of binder for casting | |
| CN102433136B (en) | Enhanced environment-friendly type water-quenched coke strength reinforcing agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121017 |