CN1257125C - Gypsum powder combined material for master mould - Google Patents
Gypsum powder combined material for master mould Download PDFInfo
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- CN1257125C CN1257125C CN 200410023377 CN200410023377A CN1257125C CN 1257125 C CN1257125 C CN 1257125C CN 200410023377 CN200410023377 CN 200410023377 CN 200410023377 A CN200410023377 A CN 200410023377A CN 1257125 C CN1257125 C CN 1257125C
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Abstract
The present invention relates to a recipe for gypsum powder of the original die. The gypsum powder is prepared from alpha gypsum powder, sulfonation melamine formaldehyde resin, peach gum and white cement. The present invention is characterized in that every 100 parts by weight of alpha gypsum powder is mixed with 0.4 to 0.65 parts by weight of sulfonation melamine formaldehyde resin, 0.07 to 0.12 part by weight of peach gum and 5 to 10 parts by weight of white cement. During practical use, when the proportion of the gypsum powder to the water is 1 to 0.4, the stirring time is from 8 to 12 minutes, the flowing time is from 8 to 12 minutes, the initial solidification time is from 22 to 25 minutes, and the final solidification time is from 40 to 45 minutes; the dry folding strength and the dry compressive strength are greatly enhanced. When the gypsum powder is used for manufacturing the original ceramic moulds, the gypsum powder has sufficient mould repairing time and good strength.
Description
Technical field
The present invention relates to a kind of original mould terra alba combination material, belong to the making material type of Production of Ceramics with gypsum mold.
Background technology
The pottery gypsum mold is the original moulds that Production of Ceramics enterprise must use in process of production in a large number, and present most of producers all directly use high strength gypsum (α gypsum) to make.When making mould with this α gypsum raw material, because product is marked thick height, the ratio of terra alba and water is usually 1: between the 0.5-0.55, effectively churning time has only 3 minutes, and flowing time was at 3-4 minute; Presetting period is 8-11 minute; Final setting time 30 minutes.Simultaneously, the mould with above-mentioned α gypsum is made owing to the intrinsic reason on the material, makes the product coefficient of expansion big, is about 0.5%; Its dried folding strength is about 7Mpa, and dried ultimate compression strength is about 22Mpa.Because the material presetting period is too short, too fast, churning time and flowing time are short, both have been unfavorable for operation, also are unfavorable for the finishing to mould; In addition, because intensity is not high, to bringing disadvantageous effect in work-ing life of mould.
Therefore, seek a kind of rationally, the original mould terra alba prescription of science, by prolonging terra alba initial set, flowing time, both made the producer that the more satisfactory mould trimming time is arranged, and improve the use properties of mould significantly, become a kind of expectation of products production producer and mould user.
Technology contents
Purpose of the present invention: aim to provide a kind of scientific and rational original mould making terra alba combination formula, wish with this terra alba when making the ceramic original mould, long churning time and flowing time should be arranged, suitable presetting period and final setting time are also arranged, final hope also is being greatly improved aspect the comprehensive strength of mould, brings positive result of use for product uses producer.
This original mould terra alba combination material, form by alpha gypsum powder, sulfonated melamine compound resin, peach gum and white cement, it is characterized in that: it is by in per 100 weight part alpha gypsum powders, mix 0.4-0.65 weight part sulfonated melamine compound resin, 0.07-0.12 the peach gum of part, the proportional quantity of the white cement of 5-10 part is formed.
Expect according to this original mould terra alba combination that above technical scheme proposes, compare with the alpha gypsum powder material that generally uses at present, except that the essence that continues to keep nontoxic, harmless, but no matter at churning time flowing time, presetting period, final setting time, still in dried folding strength or dried ultimate compression strength, fairly obvious improvement is arranged all.Use the surface in contact of original mould that this batching produces and ancestral's mould extremely smooth smooth, both reached indeformable after the drying, and sturdy construction, intensity also generally improves 35%; Thereby also improved die life.
Embodiment
Below provide the embodiment of original mould terra alba combination material:
Embodiment 1
Alpha gypsum powder 100 weight parts
Sulfonated melamine compound resin 0.4 weight part
Peach gum 0.07 weight part
White cement 5.0 weight parts
Embodiment 2
Alpha gypsum powder 100 weight parts
Sulfonated melamine compound resin 0.525 weight part
Peach gum 0.095 weight part
White cement 7.5 weight parts
Embodiment 3
Alpha gypsum powder 100 weight parts
Sulfonated melamine compound resin 0.65 weight part
Peach gum 0.12 weight part
White cement 10 weight parts
As above-mentioned proportioning can be used for that to make the terra alba combination material mark of ceramic original mould thick low, press terra alba in its actual use: water=1: 0.4, churning time are 8-10 minute, about doubling than the terra alba of α method production; Good fluidity, but flowing time is 8-12 minute, about the terra alba of producing than α method doubles, is convenient to water molding jig; Presetting period is suitable, is 22-25 minute, and the terra alba of producing than α method increases nearly about two times (and presetting period can prepare by customer requirements); Final setting time is 40-45 minute, and it is about 30% that the terra alba of producing than α method increases, and enough time finishing moulds are arranged, and mould structure is solid, the intensity height.Dried folding strength is 10-11Mpa, and the terra alba of producing than α method improves about 40%; Dried ultimate compression strength is 30-35Mpa, and the terra alba of producing than α method improves about 35, (intensity is subjected to just, the influence of final setting time and envrionment temperature); The coefficient of expansion is little, has only about 0.008-0.1%, 1/5th of the coefficient of expansion of the terra alba that only suitable α method is produced; And production technique is simple, and cost is low, is widely used.
The using method of above-mentioned this original mould terra alba combination material is as follows:
To make up powder with in 1: 0.4 the ratio input water, after soaking 1 minute, carry out vacuum stirring 8-10 minute, promptly can be used for moulding.Treat that its initial set just can repair mould later, treat that just can make original mould behind the mould complete drying uses.
The product of original mould terra alba new formulation preparation can reach the every technical parameter of present domestic ceramics enterprise to the original mould requirement fully, substituting import one with other original mould raw material; This end-use is extensive, also can be used for the making of the product mold of similar ceramics; All starting material are domestic all supply, and the products production cost is low, and technology is simple, and the huge market demand is all good utility model product of social benefit and economic benefit.
In above-mentioned composition starting material, except that a terra alba is the main raw, white cement mainly plays the toughener effect, and sulfonated melamine compound resin is the water reducer in this mixed powder, and toughener or tackiness agent effect are also arranged; And used peach gum in the case of the present invention had both played certain tackiness agent effect, also played certain delayed coagulation, was a kind of additive commonly used in the plastering moulding.
Claims (1)
1, a kind of original mould is made and is filled a prescription with terra alba, form by alpha gypsum powder, sulfonated melamine compound resin, peach gum and white cement, it is characterized in that: it is by in per 100 weight part a terra albas, mix 0.4-0.65 weight part sulfonated melamine compound resin, 0.07-0.12 the weight part peach gum, the proportional quantity of the white cement of 5-10 weight part is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023377 CN1257125C (en) | 2004-07-01 | 2004-07-01 | Gypsum powder combined material for master mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023377 CN1257125C (en) | 2004-07-01 | 2004-07-01 | Gypsum powder combined material for master mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594176A CN1594176A (en) | 2005-03-16 |
| CN1257125C true CN1257125C (en) | 2006-05-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410023377 Expired - Fee Related CN1257125C (en) | 2004-07-01 | 2004-07-01 | Gypsum powder combined material for master mould |
Country Status (1)
| Country | Link |
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| CN (1) | CN1257125C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794405A (en) * | 2011-05-24 | 2012-11-28 | 昆山市瑞捷精密模具有限公司 | Method for pouring nickel alloy mould by utilizing gypsum mould |
| CN102794394A (en) * | 2011-05-24 | 2012-11-28 | 昆山市瑞捷精密模具有限公司 | Method for pouring copper alloy mold by utilizing gypsum mould |
| CN102363576A (en) * | 2011-06-14 | 2012-02-29 | 昆山市瑞捷精密模具有限公司 | Carboxymethyl cellulose-enhanced mould plaster and forming method of plaster mould |
| CN102531513A (en) * | 2011-12-28 | 2012-07-04 | 刘立文 | Ceramic-reinforced tyre casting gypsum powder and preparation process thereof |
| CN102557564B (en) * | 2011-12-28 | 2013-08-14 | 刘立文 | High-fluidity tire forming gypsum powder and preparation process thereof |
| CN102557565B (en) * | 2011-12-30 | 2013-11-27 | 刘立文 | Resin-reinforced tire casting gypsum powder and preparation method thereof |
| CN102701690B (en) * | 2012-01-05 | 2014-07-30 | 刘立文 | High-strength tire mould casting gypsum powder and preparation process thereof |
| CN102701691B (en) * | 2012-01-06 | 2014-05-28 | 刘立文 | Heat insulation type tire mold casting gypsum powder and preparation process thereof |
| CN102718459B (en) * | 2012-01-06 | 2013-11-27 | 刘立文 | Self-lubricating gypsum powder for mold casting of tyre and preparation technology thereof |
| CN102701692B (en) * | 2012-01-06 | 2014-07-30 | 刘立文 | High-toughness tire mold casting gypsum powder and preparation process thereof |
| CN104960189A (en) * | 2015-06-01 | 2015-10-07 | 苏州华冲精密机械有限公司 | Gypsum plastic suction mold |
| CN105152614B (en) * | 2015-08-03 | 2018-03-13 | 湖南安雅达建材科技有限公司 | A kind of superpower gypsum material porcelain skill stone and preparation method thereof |
| CN105254264A (en) * | 2015-09-25 | 2016-01-20 | 钦州学院 | Processing method used for increasing Nixing pottery plaster mold strength |
-
2004
- 2004-07-01 CN CN 200410023377 patent/CN1257125C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1594176A (en) | 2005-03-16 |
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