CN1006527B - Sodium silicate sand collapsing agent - Google Patents

Sodium silicate sand collapsing agent

Info

Publication number
CN1006527B
CN1006527B CN 85102900 CN85102900A CN1006527B CN 1006527 B CN1006527 B CN 1006527B CN 85102900 CN85102900 CN 85102900 CN 85102900 A CN85102900 A CN 85102900A CN 1006527 B CN1006527 B CN 1006527B
Authority
CN
China
Prior art keywords
glass sand
water glass
breakdown
agent
sand
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.)
Withdrawn
Application number
CN 85102900
Other languages
Chinese (zh)
Other versions
CN85102900A (en
Inventor
危仁杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi University of Science and Technology
Original Assignee
Jiangxi University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangxi University of Science and Technology filed Critical Jiangxi University of Science and Technology
Priority to CN 85102900 priority Critical patent/CN1006527B/en
Publication of CN85102900A publication Critical patent/CN85102900A/en
Publication of CN1006527B publication Critical patent/CN1006527B/en
Withdrawn legal-status Critical Current

Links

Abstract

The problem of the breakdown property of water glass sand is difficult to solve. The existing breakdown agent does not have ideal breakdown effect. The present invention provides a W84 type breakdown agent for water glass sand. The W84-I type breakdown agent is prepared from 1 portion of phosphates and 0.5 to 2 portions of machine oil; the W84-II type breakdown agent is prepared from 1 portion of phosphates, 0.3 to 1 portion of machine oil, 0.3 to 0.6 portion of glycerol and 0.03 to 0.07 portion of potassium permanganate. When being applied to casting production, the W84-I type breakdown agent for water glass sand has obvious effect on improving the breakdown property of water glass sand. The W84-I type breakdown agent for water glass sand is an ideal breakdown agent for improving the breakdown property of water glass sand, and develops a new way for widening the application range of water glass sand.

Description

The invention relates to and be applied to Foundry Production, improve sodium silicate sand collapsibility novel defeated and dispersed dose.
Solving the collapsibility of water-glass sand, is domestic and international founder author long-cherished wish for many years.Done great deal of experimental work, type (core) sand that present domestic and international various defeated and dispersed dose of developing or modified water glass are prepared is at room temperature tensile strength>15Kg/cm 2, (or resistance to compression>100Kg/cm 2, shearing resistance>30Kg/cm 2) time, 700~1150 ℃ of average residual tensile strength all>0.2Kg/cm 2(or resistance to compression>3Kg/cm 2, shearing resistance>0.5Kg/cm 2).Its defeated and dispersed COEFFICIENT K-all more than 2, the defeated and dispersed COEFFICIENT K 0 of high temperature *All more than 1.And defeated and dispersed dose of being adopted or modifier mainly contain organic matters such as glucose, syrup, starch, alditol slag, humic acid, CMC, PVA, methylcellulose, hydroxypropyl methylcellulose, polyvinyl acetate, lignin, polyacrylamide, native flour, ketone resin, residual oil, coal dust and magnesia, aluminium oxide, alumina cement, iron oxide red, calcium carbonate, zinc carbonate, lithium carbonate, graphite powder, bentonite, chromite powder etc.And be based on organic principle.
The objective of the invention is to make a kind of based on inorganic composition, knockability is good, and consumption is few, and gas forming amount is little, and cost is low, helps environmental protection, can improve the disperser for water-glass sand of sodium silicate sand collapsibility better.
The disperser for water-glass sand that we develop, its prescription is as follows: the I type is a phosphate: machine oil=1: (0.5~2); The II type is a phosphate: machine oil: glycerine: potassium permanganate=1: (0.3~1): (0.3~0.6): (0.03~0.07).(being weight ratio).Defeated and dispersed dose of key material of these two kinds of models is phosphate and machine oil, and glycerine only works the booster action that improves water-glass sand normal temperature baked tensile strength in the II type, potassium permanganate then is a kind of oxidant, can impel the machine oil oxidation and becomes acid, helps the waterglass sclerosis.So same inventive concept of this two kinds defeated and dispersed dose real genus.Defeated and dispersed dose of this kind has obvious effects to improving sodium silicate sand collapsibility, adds the water-glass sand (the waterglass addition is 5%) that accounts for 1.3% defeated and dispersed dose of sand weight, and the residual tensile strength of its sample mean is not more than 0.3Kg/cm in the time of 400~700 ℃ 2, in the time of 700~1150 ℃, be not more than 0.1Kg/cm 2, its defeated and dispersed COEFFICIENT K is less than 1, and the defeated and dispersed COEFFICIENT K 0 of high temperature is less than 0.2.And water-glass sand normal temperature working strength, mouldability and core table peace property are all better.As seen not only main component is different with similar products at home and abroad for the disperser for water-glass sand that we developed, and collapsibility performance will be got well.(seeing that " Hebei Polytechnical College's examining report " replenishes circumstantial evidence).
The water-glass sand that adds defeated and dispersed dose of this kind can replace resin sand to be applied to hot-box core making process, can make complicated II, III level core, also can be used as the substitute material of various oil-sands, and can use common heating, CO 2, produce from several different methods such as hard.That defeated and dispersed dose of this kind also has is nontoxic, have no irritating odor, and helps environmental protection, is easy to advantages such as popularization.The cost of this water-glass sand only is about 1/3rd of a resin sand, and gas forming amount is low, has significantly economic benefit and social benefit.
(annotate: the implication of K and K0 value and computational methods see the 3rd phase of nineteen eighty-three, " casting engineering " for details)

Claims (2)

1, a kind of Foundry Production that is used for is improved the disperser for water glass sand of sodium silicate sand collapsibility, and the prescription that it is characterized in that defeated and dispersed dose is a phosphate; Machine oil=1: (0.5~2).
2, a kind of Foundry Production that is used for, improve the disperser for water glass sand of sodium silicate sand collapsibility, the prescription that it is characterized in that defeated and dispersed dose is a phosphate: machine oil: glycerine: potassium permanganate=1: (0.3~1): (0.3~0.6): (0.03~0.07).
(annotating: be weight ratio)
CN 85102900 1985-04-01 1985-04-01 Sodium silicate sand collapsing agent Withdrawn CN1006527B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 85102900 CN1006527B (en) 1985-04-01 1985-04-01 Sodium silicate sand collapsing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 85102900 CN1006527B (en) 1985-04-01 1985-04-01 Sodium silicate sand collapsing agent

Publications (2)

Publication Number Publication Date
CN85102900A CN85102900A (en) 1986-09-17
CN1006527B true CN1006527B (en) 1990-01-24

Family

ID=4792845

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 85102900 Withdrawn CN1006527B (en) 1985-04-01 1985-04-01 Sodium silicate sand collapsing agent

Country Status (1)

Country Link
CN (1) CN1006527B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101259515B (en) * 2007-03-05 2011-09-07 上海市机械制造工艺研究所有限公司 CO2 hardened silicate-bonded sand additive agent and formative technology thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104259379B (en) * 2014-09-30 2016-06-01 济南圣泉集团股份有限公司 For the defeated and dispersed toughener of sodium silicate sand
CN105344920A (en) * 2015-10-08 2016-02-24 蚌埠冠宜型材科技有限公司 Sodium silicate binder for improving collapsibility
CN107716845A (en) * 2017-09-01 2018-02-23 东风精密铸造安徽有限公司 A kind of modified sodium silicate sand dispersant and preparation method thereof
CN109047648A (en) * 2018-09-26 2018-12-21 安徽江杰实业有限公司 A kind of defeated and dispersed reinforcing agent of sodium silicate sand used for casting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101259515B (en) * 2007-03-05 2011-09-07 上海市机械制造工艺研究所有限公司 CO2 hardened silicate-bonded sand additive agent and formative technology thereof

Also Published As

Publication number Publication date
CN85102900A (en) 1986-09-17

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