CN104083288A - Phosphate casting investment material - Google Patents
Phosphate casting investment material Download PDFInfo
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- CN104083288A CN104083288A CN201410305489.3A CN201410305489A CN104083288A CN 104083288 A CN104083288 A CN 104083288A CN 201410305489 A CN201410305489 A CN 201410305489A CN 104083288 A CN104083288 A CN 104083288A
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- quartz
- binding agent
- cristobalite
- component
- investment material
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Abstract
The invention relates to a phosphate casting investment material. The material comprises the following components in percentage by weight: 75-84 percent of quartz and cristobalite, 6-10 percent of phosphoric acid, 9-15 percent of magnesia and 1-2 percent of a binding agent, as well as an adhesive of which the content is 26-30ml in every 100g of the components. The phosphate casting investment material has the advantages that the material mixed by the quartz and cristobalite, the phosphoric acid, the magnesia and the binding agent by the adhesive is beneficial to expansion of the raw materials, ensures good surface smoothness of the mixed raw materials, and is advantageous to curing and drying when the raw materials are mixed, so that the service life is prolonged, the production cost is reduced compared with that of imported raw materials, and the whole flatness is good.
Description
Technical field
The present invention relates to phosphate casting investment material.
Background technology
In Oral Repair, phosphate casting investment material is as having realized the important materials of cured type to metal restoration, and existing phosphate casting investment material is all made by the raw material of foreign import, not only exist production cost high, and mix latter made product and exist fineness bad, the flatness of entirety is bad, affect result of use, reliability is bad, existing domestic phosphate casting investment material is made by quartz or cristobalite, be unfavorable for that raw material expands, thereby reduced service efficiency, Practical Performance is poor.
Summary of the invention
Product after the existing phosphate casting investment material of the technical problem to be solved in the present invention is made exists fineness bad, and result of use is poor, and the flatness of entirety is bad, and production cost is high, thereby phosphate casting investment material is provided.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: phosphate casting investment material, component by following percentage by weight forms: quartz and cristobalite 75～84%, phosphoric acid 6～10%, magnesia 9～15%, bonding agent 1～2%, also comprise binding agent, in every 100g component described above, the capacity of described binding agent is 26～30ml.
Preferably, component by following percentage by weight forms: quartz and cristobalite 84%, phosphoric acid 6%, magnesia 9%, bonding agent 1%, the capacity of described binding agent is 27ml in every 100g component described above, ensure that mixed component is uniform pastel, while thering is good self drainage or vibration, there is mobility, be conducive to quartz and expand, ensured mixed fineness, being conducive to component solidifies, improved service life, unfailing performance is good, and the flatness of entirety is good.
Preferably, component by following percentage by weight forms: quartz and cristobalite 80%, phosphoric acid 8%, magnesia 10%, bonding agent 2%, the capacity of described binding agent is 28ml in every 100g component described above, ensure that mixed component is uniform pastel, while thering is good self drainage or vibration, there is mobility, be conducive to quartz and expand, ensured mixed fineness, being conducive to component solidifies, improved service life, unfailing performance is good, and the flatness of entirety is good.
Preferably, component by following percentage by weight forms: quartz and cristobalite 75%, phosphatase 11 0%, magnesia 13.5%, bonding agent 1.5%, the capacity of described binding agent is 29ml in every 100g component described above, ensure that mixed component is uniform pastel, the mobility having while having good self drainage or vibration, is conducive to quartz and expands, and has ensured mixed fineness, being conducive to component solidifies, improved service life, unfailing performance is good, and the flatness of entirety is good.
Preferably, described bonding agent is magnesium oxide or ammonium di-hydrogen phosphate or Magnesium biphosphate, is conducive to be combined with quartz and phosphoric acid, has reduced hardening time, has improved the time that raw material mixes, and has improved efficiency.
Preferably, described binding agent is aqueous solution or silicon sol solution, and silicon sol solution contributes to improve quartzy expansion rate, has improved the casting accuracy of subsequent product, and aqueous solution contributes to solidify dry, has improved service life.
Preferably, described binding agent is the mixture of aqueous solution and silicon sol solution, the mass percent of described aqueous solution and silicon sol solution is 10:1～15:1, contributes to improve quartzy expansion rate, has improved the casting accuracy of subsequent product, aqueous solution contributes to solidify dry, improved service life, in the time that the mass percent of aqueous solution and silicon sol solution is less than 10:1 or is greater than 15:1, the expansion efficiency of quartz is bad, be unfavorable for solidifying dry, serviceability is poor.
In sum, advantage of the present invention: the quartz of constant weight percentage ratio and cristobalite, phosphoric acid, magnesia, bonding agent are had the following advantages by the mixed raw material of binding agent: be conducive to the expansion of raw material, ensure that mixed raw material surface smoothness is good, be conducive to solidify when raw material mixes dry, improve service life, reduced production cost with respect to imported raw material, the flatness of entirety is good.
Detailed description of the invention
Embodiment mono-:
Phosphate casting investment material, component by following percentage by weight forms: quartz and cristobalite 84%, phosphoric acid 6%, magnesia 9%, magnesium oxide 1%, the capacity of described binding agent is aqueous solution 27ml in every 100g component described above, described binding agent is aqueous solution, the percentage by weight that described quartz accounts for quartz and cristobalite is 60%, and the percentage by weight that described cristobalite accounts for quartz and cristobalite is 40%.
Embodiment bis-:
Phosphate casting investment material, component by following percentage by weight forms: quartz and cristobalite 80%, phosphoric acid 8%, magnesia 10%, ammonium di-hydrogen phosphate 2%, the capacity of described binding agent is binding agent 28ml in every 100g component described above, described binding agent is silicon sol solution, the percentage by weight that described quartz accounts for quartz and cristobalite is 65%, and the percentage by weight that described cristobalite accounts for quartz and cristobalite is 35%.
Embodiment tri-:
Phosphate casting investment material, component by following percentage by weight forms: quartz and cristobalite 75%, phosphatase 11 0%, magnesia 13.5%, Magnesium biphosphate 1.5%, the capacity of described binding agent is binding agent 29ml in every 100g component described above, described binding agent is the mixture of aqueous solution and silicon sol solution, the mass percent of described aqueous solution and silicon sol solution is 10:1, the percentage by weight that described quartz accounts for quartz and cristobalite is 70%, and the percentage by weight that described cristobalite accounts for quartz and cristobalite is 30%.
Adopt phosphate casting investment material to make a production method for product, comprise successively:
A) raw material mix and blend: stir after adding binding agent in the mixture of quartzy and cristobalite, phosphoric acid, magnesia, bonding agent, the percentage by weight of described quartz is 60～70%, and the percentage by weight of described cristobalite is 30～40%;
B) raw material embedding: a) solution casting after stirring is to cooling in bracket mould by step, and be 2～5min cool time, and chilling temperature is 10～20 DEG C;
C) baking: by step b) bracket mould after treatment carry out high temperature drying baking and process, baking temperature is 950～960 DEG C, baking time is 27～33min;
D) centrifugalize: by step c) bracket mould after treatment by centrifuge by mould and material separation;
It is good that product after producing by above-mentioned steps has surface smoothness, good integral smoothness, the production cost of raw material is low, result of use is good, unfailing performance is strong, is conducive to the expansion of raw material, ensures that mixed raw material surface smoothness is good, be conducive to when raw material mixes solidify dryly, improved service life.
Claims (7)
1. phosphate casting investment material, it is characterized in that: the component by following percentage by weight forms: quartz and cristobalite 75～84%, phosphate 6～10%, magnesia 9～15%, bonding agent 1～2%, also comprise binding agent, in every 100g component described above, the capacity of described binding agent is 26～30ml.
2. phosphate casting investment material according to claim 1, is characterized in that: the component by following percentage by weight forms: quartz and cristobalite 84%, phosphoric acid 6%, magnesia 9%, bonding agent 1%, the capacity of described binding agent is 27ml in every 100g component described above.
3. phosphate casting investment material according to claim 1, is characterized in that: the component by following percentage by weight forms: quartz and cristobalite 80%, phosphoric acid 8%, magnesia 10%, bonding agent 2%, the capacity of described binding agent is 28ml in every 100g component described above.
4. phosphate casting investment material according to claim 1, is characterized in that: the component by following percentage by weight forms: quartz and cristobalite 75%, phosphatase 11 0%, magnesia 13.5%, bonding agent 1.5%, the capacity of described binding agent is 29ml in every 100g component described above.
5. according to the phosphate casting investment material described in claim 1 to 4 any one, it is characterized in that: described bonding agent is magnesium oxide or ammonium di-hydrogen phosphate or Magnesium biphosphate.
6. according to the phosphate casting investment material described in claim 1 to 4 any one, it is characterized in that: described binding agent is aqueous solution or silicon sol solution.
7. according to the phosphate casting investment material described in claim 1 to 4 any one, it is characterized in that: described binding agent is the mixture of aqueous solution and silicon sol solution, the mass percent of described aqueous solution and silicon sol solution is 10:1～15:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410305489.3A CN104083288A (en) | 2014-06-30 | 2014-06-30 | Phosphate casting investment material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410305489.3A CN104083288A (en) | 2014-06-30 | 2014-06-30 | Phosphate casting investment material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104083288A true CN104083288A (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410305489.3A Pending CN104083288A (en) | 2014-06-30 | 2014-06-30 | Phosphate casting investment material |
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| CN (1) | CN104083288A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890927A (en) * | 2015-12-18 | 2017-06-27 | 辽宁法库陶瓷工程技术研究中心 | One kind casting ceramic air set core powder and preparation method |
| CN107773317A (en) * | 2016-08-27 | 2018-03-09 | 浙江迅实科技有限公司 | A kind of artificial tooth processing technology using 3D printing |
| CN107772674A (en) * | 2016-08-27 | 2018-03-09 | 浙江迅实科技有限公司 | A kind of ring processing technology based on 3D printing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050110177A1 (en) * | 1998-07-10 | 2005-05-26 | Schulman Martin L. | Mass production of shells and models for dental restorations produced by solid free-form fabrication methods |
| CN101879131A (en) * | 2010-06-13 | 2010-11-10 | 洛阳北苑特种陶瓷有限公司 | Nickel-chromium investment and preparation method thereof |
-
2014
- 2014-06-30 CN CN201410305489.3A patent/CN104083288A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050110177A1 (en) * | 1998-07-10 | 2005-05-26 | Schulman Martin L. | Mass production of shells and models for dental restorations produced by solid free-form fabrication methods |
| CN101879131A (en) * | 2010-06-13 | 2010-11-10 | 洛阳北苑特种陶瓷有限公司 | Nickel-chromium investment and preparation method thereof |
Non-Patent Citations (3)
| Title |
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| 余桂林，等: "方石英的制备及其对磷酸盐包埋材料性能的影响", 《武汉科技大学学报·自然科学版》 * |
| 张华敏，等: "《口腔修复工艺理论和实践概要》", 31 August 2013, 西南交通大学出版社 * |
| 杨丽娟，等: "磷酸二氢镁自硬砂的研究", 《加工工艺学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890927A (en) * | 2015-12-18 | 2017-06-27 | 辽宁法库陶瓷工程技术研究中心 | One kind casting ceramic air set core powder and preparation method |
| CN107773317A (en) * | 2016-08-27 | 2018-03-09 | 浙江迅实科技有限公司 | A kind of artificial tooth processing technology using 3D printing |
| CN107772674A (en) * | 2016-08-27 | 2018-03-09 | 浙江迅实科技有限公司 | A kind of ring processing technology based on 3D printing |
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Application publication date: 20141008 |
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| RJ01 | Rejection of invention patent application after publication |