CN104446453A - Ceramic core with high stability and high strength - Google Patents
Ceramic core with high stability and high strength Download PDFInfo
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- CN104446453A CN104446453A CN201310428230.3A CN201310428230A CN104446453A CN 104446453 A CN104446453 A CN 104446453A CN 201310428230 A CN201310428230 A CN 201310428230A CN 104446453 A CN104446453 A CN 104446453A
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Abstract
A ceramic core with high stability and high strength is provided to mainly overcome the technical problem that the stability and strength of ceramic cores in the prior art is not high enough, which affects the product quality of investment castings. The raw materials of the ceramic core comprise, by weight, 60-85% of zirconia powder, 4-20% of yttria powder, 2-18% of calcium carbonate powder, 0.5-3% of nanometer zirconia powder, 4-8% of paraffin, 0.2-0.6% of beeswax, 0.1-0.3% of polyethylene, and 0.4-0.8% of oleic acid. According to the invention, the ceramic core possesses good high-temperature stability and enough strength, so that the inner cavity quality of investment castings is significantly improved and the core fracture phenomenon resulting from low strength can be avoided during precision casting, which helps substantial increase in the casting qualified rate. By adopting the material system in the invention, the reaction between a fusion metal and a core material, which results in a responsive defect, can be avoided during the high temperature cast. The ceramic core is mainly applied to the field of investment casting.
Description
Technical field
The present invention relates to a kind of high stability, high-strength ceramic core, be mainly used in precision-investment casting field.
Background technology
Ceramic core is the adaptor forming the complicated hollow lumen structure of precision castings, surface quality and the dimensional precision of precision castings inner chamber are determined by ceramic core completely, therefore require that ceramic core material will have good high-temperature stability, to ensure with molten metal bath, any reaction to occur in casting cycle; In addition in use, when ceramic core needs to bear pressure wax, wax liquid and the impact of high-temperature molten metal liquid during casting, therefore need enough intensity.Existing ceramic core mainly adopts silicon-dioxide to prepare, and its stability and intensity can not meet the demand of actual production.
Summary of the invention
The present invention, for the purpose of solving the problem, mainly solves stability and the insufficient strength of prior art existence, affects the technical problem of precision castings quality product, and provide a kind of high stability, high-strength ceramic core.
For achieving the above object, the present invention adopts following technical proposals: high stability, high-strength ceramic core, be made up of following raw materials by weight, wherein zirconia powder 60-85%, yttrium oxide powder 4-20%, Paris white 2-18%, nano oxidized zirconium powder 0.5-3%, paraffin 4-8%, beeswax 0.2-0.6%, polyethylene 0.1-0.3%, oleic acid 0.4-0.8%.
Preparation method: by zirconia powder, yttrium oxide powder, Paris white, crosses 325 mesh standard sieves respectively, gets lower part of screen and divide.Then in following ratio mixing: zirconia powder 60-85%, yttrium oxide powder 4-20%, Paris white 2-18%, nano oxidized zirconium powder 0.5-3%, oleic acid 0.4-0.8%, make powder in 2 hours 105 DEG C of heating after mixing for subsequent use; Paraffin 4-8%, beeswax 0.2-0.6%, polyethylene 0.1-0.3%, mix at 120 DEG C, and it is for subsequent use that mistake 325 mesh standard sieves make softening agent.Mixer is warming up to 120 DEG C, adds the softening agent prepared, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.Above-mentioned material ingot ceramic core forming machine is made the ceramic core green compact of some shapes according to mould.Green compact obtain ceramic core through 1190-1320 DEG C of high-temperature roasting.
Feature of the present invention and beneficial effect
This ceramic core material has good high-temperature stability and enough intensity, can significantly improve precision castings inner chamber quality, and can avoid in smart casting process, due to insufficient strength, the disconnected core phenomenon caused, substantially increases qualified cast rate simultaneously.The material system that the present invention adopts can be avoided reacting at high temperature casting process molten metal and core material, produces reactive defect at core cavity.
Embodiment
Embodiment one
Get zirconia powder 60%, yttrium oxide powder 20%, Paris white 8.5%, cross 325 mesh standard sieves respectively, get lower part of screen to divide and mix with nano oxidized zirconium powder 3% and oleic acid 0.4%, after mixing 105 DEG C heating 2 hours for subsequent use, get paraffin 7.55%, beeswax 0.4%, polyethylene 0.15%, mix at 120 DEG C, it is for subsequent use that mistake 325 mesh standard sieves make softening agent.Mixer is warming up to 120 DEG C, adds and prepare softening agent, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.
Embodiment two
Get zirconia powder 69%, yttrium oxide powder 4%, Paris white 18%, cross 325 mesh standard sieves respectively, get lower part of screen to divide and mix with nano oxidized zirconium powder 2% and oleic acid 0.6%, after mixing 105 DEG C heating 2 hours for subsequent use, get paraffin 5.9%, beeswax 0.3%, polyethylene 0.2%, mix at 120 DEG C, it is for subsequent use that mistake 325 mesh standard sieves make softening agent.Mixer is warming up to 120 DEG C, adds and prepare softening agent, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.
Embodiment three
Get zirconia powder 78%, yttrium oxide powder 8%, Paris white 6%, cross 325 mesh standard sieves respectively, get lower part of screen to divide and mix with nano oxidized zirconium powder 1% and oleic acid 0.7%, after mixing 105 DEG C heating 2 hours for subsequent use, get paraffin 5.8%, beeswax 0.3%, polyethylene 0.2%, mix at 120 DEG C, it is for subsequent use that mistake 325 mesh standard sieves make softening agent.Mixer is warming up to 120 DEG C, adds and prepare softening agent, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.
Embodiment four
Get zirconia powder 85%, yttrium oxide powder 6.5%, Paris white 2%, cross 325 mesh standard sieves respectively, get lower part of screen to divide and mix with nano oxidized zirconium powder 0.5% and oleic acid 0.8%, after mixing 105 DEG C heating 2 hours for subsequent use, get paraffin 4.7%, beeswax 0.3%, polyethylene 0.2%, mix at 120 DEG C, it is for subsequent use that mistake 325 mesh standard sieves make softening agent.Mixer is warming up to 120 DEG C, adds and prepare softening agent, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.
Above-mentioned material ingot ceramic core forming machine, the ceramic core green compact making some shapes according to mould obtain ceramic core through 1190-1320 DEG C of high-temperature roasting.
The intensity technique Indexes Comparison of the present invention and currently available products is as following table:
| Intensity | |
| Existing ceramic core | ≤20MPa |
| Ceramic core of the present invention | 35-40MPa |
Claims (6)
1. high stability, a high-strength ceramic core, be made up of following raw materials by weight, wherein zirconia powder 60-85%, yttrium oxide powder 4-20%, Paris white 2-18%, nano oxidized zirconium powder 0.5-3%, paraffin 4-8%, beeswax 0.2-0.6%, polyethylene 0.1-0.3%, oleic acid 0.4-0.8%.
2. high stability, high-strength ceramic core as claimed in claim 1, the concrete consumption of its raw material is prepared by weight percentage:
Get zirconia powder 60%, yttrium oxide powder 20%, Paris white 8.5%, cross 325 mesh standard sieves respectively, get lower part of screen to divide and mix with nano oxidized zirconium powder 3% and oleic acid 0.4%, after mixing 105 DEG C heating 2 hours for subsequent use, get paraffin 7.55%, beeswax 0.4%, polyethylene 0.15%, mix at 120 DEG C, crossing 325 mesh standard sieves, to make softening agent for subsequent use, mixer is warming up to 120 DEG C, add and prepare softening agent, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.
3. high stability, high-strength ceramic core as claimed in claim 1, the concrete consumption of its raw material is prepared by weight percentage:
Get zirconia powder 69%, yttrium oxide powder 4%, Paris white 18%, cross 325 mesh standard sieves respectively, get lower part of screen to divide and mix with nano oxidized zirconium powder 2% and oleic acid 0.6%, after mixing 105 DEG C heating 2 hours for subsequent use, get paraffin 5.9%, beeswax 0.3%, polyethylene 0.2%, mix at 120 DEG C, crossing 325 mesh standard sieves, to make softening agent for subsequent use, mixer is warming up to 120 DEG C, add and prepare softening agent, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.
4. high stability, high-strength ceramic core as claimed in claim 1, the concrete consumption of its raw material is prepared by weight percentage:
Get zirconia powder 78%, yttrium oxide powder 8%, Paris white 6%, cross 325 mesh standard sieves respectively, get lower part of screen to divide and mix with nano oxidized zirconium powder 1% and oleic acid 0.7%, after mixing 105 DEG C heating 2 hours for subsequent use, get paraffin 5.8%, beeswax 0.3%, polyethylene 0.2%, mix at 120 DEG C, crossing 325 mesh standard sieves, to make softening agent for subsequent use, mixer is warming up to 120 DEG C, add and prepare softening agent, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.
5. high stability, high-strength ceramic core as claimed in claim 1, the concrete consumption of its raw material is prepared by weight percentage:
Get zirconia powder 85%, yttrium oxide powder 6.5%, Paris white 2%, cross 325 mesh standard sieves respectively, get lower part of screen to divide and mix with nano oxidized zirconium powder 0.5% and oleic acid 0.8%, after mixing 105 DEG C heating 2 hours for subsequent use, get paraffin 4.7%, beeswax 0.3%, polyethylene 0.2%, mix at 120 DEG C, crossing 325 mesh standard sieves, to make softening agent for subsequent use, mixer is warming up to 120 DEG C, add and prepare softening agent, then add the above-mentioned powder mixed while stirring, powder all adds rear continuation stirring 12 hours, pours out the finish mix ingot of cooling.
6. the high stability of preparation as described in claim 1-5, the method for high-strength ceramic core, the method above-mentioned finish mix ingot ceramic core forming machine is made the ceramic core green compact of some shapes, and green compact obtain ceramic core through 1190-1320 DEG C of high-temperature roasting.
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| CN201310428230.3A CN104446453A (en) | 2013-09-18 | 2013-09-18 | Ceramic core with high stability and high strength |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987083A (en) * | 2015-07-07 | 2015-10-21 | 东方电气集团东方汽轮机有限公司 | Ceramic core preparation method |
| CN105418055A (en) * | 2016-01-22 | 2016-03-23 | 福建省万旗科技陶瓷有限公司 | Light and environment-friendly composite nano calcium carbonate domestic ceramic and preparation method thereof |
| CN108178627A (en) * | 2016-12-08 | 2018-06-19 | 辽宁法库陶瓷工程技术研究中心 | A kind of preparation method of yttria-stabilized zirconia ceramic core |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372421A (en) * | 2008-09-27 | 2009-02-25 | 辽宁省轻工科学研究院特铸材料有限公司 | Yttria ceramic core material for casting single crystal and moulding preparation thereof |
| CN101429024A (en) * | 2008-12-05 | 2009-05-13 | 辽宁省轻工科学研究院特铸材料有限公司 | Compound ceramic mould core material employing nano-zirconium oxide |
| CN101429023A (en) * | 2008-12-05 | 2009-05-13 | 辽宁省轻工科学研究院特铸材料有限公司 | Compound zirconia ceramics core material employing inorfil |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101372421A (en) * | 2008-09-27 | 2009-02-25 | 辽宁省轻工科学研究院特铸材料有限公司 | Yttria ceramic core material for casting single crystal and moulding preparation thereof |
| CN101429024A (en) * | 2008-12-05 | 2009-05-13 | 辽宁省轻工科学研究院特铸材料有限公司 | Compound ceramic mould core material employing nano-zirconium oxide |
| CN101429023A (en) * | 2008-12-05 | 2009-05-13 | 辽宁省轻工科学研究院特铸材料有限公司 | Compound zirconia ceramics core material employing inorfil |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987083A (en) * | 2015-07-07 | 2015-10-21 | 东方电气集团东方汽轮机有限公司 | Ceramic core preparation method |
| CN105418055A (en) * | 2016-01-22 | 2016-03-23 | 福建省万旗科技陶瓷有限公司 | Light and environment-friendly composite nano calcium carbonate domestic ceramic and preparation method thereof |
| CN108178627A (en) * | 2016-12-08 | 2018-06-19 | 辽宁法库陶瓷工程技术研究中心 | A kind of preparation method of yttria-stabilized zirconia ceramic core |
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Application publication date: 20150325 |