CN105503201A - Digital forming method of precision ceramic parts - Google Patents
Digital forming method of precision ceramic parts Download PDFInfo
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- CN105503201A CN105503201A CN201510899372.7A CN201510899372A CN105503201A CN 105503201 A CN105503201 A CN 105503201A CN 201510899372 A CN201510899372 A CN 201510899372A CN 105503201 A CN105503201 A CN 105503201A
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- Prior art keywords
- forming method
- ceramic
- ceramics
- biscuit
- near net
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/12—Apparatus or processes for treating or working the shaped or preshaped articles for removing parts of the articles by cutting
- B28B11/125—Cutting-off protruding ridges, also profiled cutting
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6026—Computer aided shaping, e.g. rapid prototyping
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/612—Machining
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Ceramic Products (AREA)
Abstract
The invention provides a digital forming method of precision ceramic parts. The digital forming method comprises the steps of directly processing ceramic biscuits by a mechanical layer-by-layer milling rapid forming technology to obtain near net shape biscuits of the ceramic parts; then, sintering the near net shape biscuits, and processing the sintered near net shape biscuits slightly to obtain final shaped products of the ceramic parts. According to the method, near net shape processing is directly carried out in a biscuit state, so that the working allowance after sintering is reduced, the processing difficulty after sintering is reduced, the processing accuracy is high, and a complex curved surface is formed for once; the digital forming method is especially suitable for forming high-accuracy and high-complexity ceramic parts.
Description
Technical field
The present invention relates to pottery, particularly a kind of digital forming method of ceramic precision part.
Background technology
Pottery is the powder compound with natural or synthetic, through the multiphase solid material be made up of mineral compound be shaped and high temperature sintering is made.Because pottery has high-melting-point, high rigidity, high-wearing feature, resistance to oxidation, heat resistanceheat resistant such as to be shaken at the advantage, be widely used in aerospace, power electronics, mechanical industry, petrochemical complex, many fields such as photovoltaic industry, particularly silicon carbide ceramics, there is after sintering excellent mechanical behavior under high temperature, less thermal expansivity, high thermal conductivity, the features such as high elastic coefficient, be used as each class bearing, ball, sealing member, cutting tool, gas turbine blades, turbocharger rotor etc., also can be used as aircraft, the combustor component of spacecraft engine, rocket nozzle, the encapsulating material of nuclear fuel, large-scale speculum etc.
Biscuit of ceramics fragility before sintering is high, forming efficiency is low, machined surface quality is poor, it is comparatively serious when collapsing limit and seminess, particularly machining high-precision, complex-shaped precision component to exist, and above problem is just more outstanding.
So the working method of pottery is reprocessed after mostly being sintering at present, its method mainly comprises numerical control grinding processing, linear cutter, ultrasonic machining, laser processing etc.
But after ceramic powder sintering, hardness is quite high, is only second to several superhard material, difficulty of processing is very large, and working (machining) efficiency is low, and also can cause very large damage to machining tool; The processing technology that ultrasonic machining, laser processing etc. are advanced, although improve working (machining) efficiency, reduce the damage of equipment, cost is high, expensive.
Summary of the invention
For above problem, the invention provides a kind of digital forming method of ceramic precision part, the method adopts the Rapid Prototyping technique of mechanical type successively milling directly to process biscuit of ceramics raw material, obtains the near net-shaped biscuit of ceramic part.
Further, a kind of digital forming method of ceramic precision part, need sinter near net-shaped biscuit of ceramics, and sinter post-treatment on a small quantity, obtains the final shaping prod of ceramic part.
Further, a kind of digital forming method of ceramic precision part, need ceramic part initial three-dimensional CAD digital model and according to sintering shrinkage, set up the three-dimensional CAD digital model of near net-shaped biscuit of ceramics, and generate NC machining code according to the three-dimensional CAD digital model of near net-shaped biscuit of ceramics.
Further, a kind of digital forming method of ceramic precision part, for different biscuit of ceramics materials, should select different process tools.
Further, a kind of digital forming method of ceramic precision part, for different biscuit of ceramics materials, should set the different speed of mainshaft, depth of cut and cutting speed.
Further, a kind of digital forming method of ceramic precision part, needs after digitizing milling to carry out powder cleaning near net-shaped biscuit of ceramics.
Compared with existing ceramic forming technology, the present invention has the following advantages:
(1) directly under biscuit state, carry out near net-shaped processing, obtain near net-shaped biscuit of ceramics, decrease the process redundancy after sintering, reduce the difficulty of processing after sintering, alleviate the wearing and tearing of cutter;
(2) by arranging rational cutting parameter and selecting suitable process tool, can effectively prevent from collapsing the processing problems such as limit and crackle, gained near net-shaped biscuit of ceramics surface quality is high, and thin-wall face shaping rate is high;
(3) adopt digital forming method, not only working accuracy is high, and can realize complex-curved disposable shaping, is particularly suitable for the shaping of high-accuracy property, high complexity ceramic part;
(4) efficiency is high, cost is low, without cutting fluid discharge, environmental protection.
Accompanying drawing explanation
Fig. 1 is a kind of digital forming method schematic diagram of ceramic precision part.
Specific embodiment
In order to clearly give expression to the step feature of ceramic precision part digital forming method of the present invention, below in conjunction with Fig. 1, enumerate the embodiment of a silicon carbide ceramics precision part digital forming.
The first step, biscuit makes:
(1) according to processing requirement, the silicon carbide ceramics powder of variable grain, order number is mixed with a certain amount of sintering aid, wears into fine powder;
(2) powder loaded mould pressurizing and keep for some time to make block silicone carbide biscuit of ceramics raw material 2.
Second step, biscuit is processed:
(1) according to the sintering shrinkage of silicon carbide ceramics precision part initial three-dimensional CAD digital model and silicon carbide ceramics, set up the three-dimensional CAD digital model of near net-shaped ceramics biscuits of carbonized bricks, and generate machining code;
(2) block silicone carbide biscuit of ceramics raw material 2 is placed on numerically controlled machining platform 1, and with fixture 5, block silicone carbide biscuit of ceramics raw material 2 is clamped;
(3) machining code is converted into the driving code of numerically-controlled machine 4, and adopts carbide-tipped milling cutter 3 to complete digitizing milling to block silicone carbide biscuit of ceramics raw material 2;
(4) powder cleaning is carried out to the near net-shaped ceramics biscuits of carbonized bricks after completion of processing, avoid powder bonded on biscuit, affect subsequent technique.
Wherein, ceramics biscuits of carbonized bricks roughing process chooses speed of mainshaft 7200r/min, depth of cut 0.4mm, cutting speed 18mm/s; Finishing passes chooses speed of mainshaft 7200r/min, depth of cut 0.2mm, cutting speed 20mm/s.
3rd step, sintering and following process:
According to processing requirement, to adopting the near net-shaped ceramics biscuits of carbonized bricks of digital forming to sinter, and the method adopting numerical control grinding to process carries out sintering post-treatment, obtains final shaping prod.
Although the embodiment disclosed by the present invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technician in any the technical field of the invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (6)
1. a digital forming method for ceramic precision part, is characterized in that, the method adopts the Rapid Prototyping technique of mechanical type successively milling directly to process biscuit of ceramics raw material, obtains the near net-shaped biscuit of ceramic part.
2. the digital forming method of a kind of ceramic precision part according to claim 1, is characterized in that, need sinter, and sinter post-treatment on a small quantity near net-shaped biscuit of ceramics, obtains the final shaping prod of ceramic part.
3. the digital forming method of a kind of ceramic precision part according to claim 1, it is characterized in that, need according to ceramic part initial three-dimensional CAD digital model and sintering shrinkage, set up the three-dimensional CAD digital model of near net-shaped biscuit of ceramics, and generate machining code according to the three-dimensional CAD digital model of near net-shaped biscuit of ceramics.
4. the digital forming method of a kind of ceramic precision part according to claim 1, is characterized in that, for different biscuit of ceramics materials, should select different process tools.
5. the digital forming method of a kind of ceramic precision part according to claim 1, is characterized in that, for different biscuit of ceramics materials, should set the different speed of mainshaft, depth of cut and cutting speed.
6. the digital forming method of a kind of ceramic precision part according to claim 1, is characterized in that, needs to carry out powder cleaning near net-shaped biscuit of ceramics after digitizing milling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899372.7A CN105503201A (en) | 2015-12-09 | 2015-12-09 | Digital forming method of precision ceramic parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899372.7A CN105503201A (en) | 2015-12-09 | 2015-12-09 | Digital forming method of precision ceramic parts |
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| CN105503201A true CN105503201A (en) | 2016-04-20 |
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| CN201510899372.7A Pending CN105503201A (en) | 2015-12-09 | 2015-12-09 | Digital forming method of precision ceramic parts |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393451A (en) * | 2016-08-26 | 2017-02-15 | 米太智能宝石（深圳）有限公司 | Ceramic jewelry crafting method |
| CN111098392A (en) * | 2020-01-08 | 2020-05-05 | 山东大学 | Manufacturing method of large-size ceramic part with complex surface |
| CN113526961A (en) * | 2021-08-19 | 2021-10-22 | 南通三责精密陶瓷有限公司 | Manufacturing method of silicon carbide mold for glass molding and silicon carbide mold |
| CN113601732A (en) * | 2021-06-26 | 2021-11-05 | 成都凯迪精工科技有限责任公司 | Processing method of ceramic material wind tunnel model |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618414A (en) * | 2009-08-06 | 2010-01-06 | 华中科技大学 | Deposition manufacturing method of tools and moulds |
| CN103009461A (en) * | 2012-11-29 | 2013-04-03 | 机械科学研究总院先进制造技术研究中心 | Digital dieless forming method for ceramic biscuit |
| CN104353835A (en) * | 2014-11-15 | 2015-02-18 | 安徽省新方尊铸造科技有限公司 | Part manufacturing method combining 3D (three-dimensional) printing with powder metallurgy |
| CN104496479A (en) * | 2014-12-08 | 2015-04-08 | 中国建筑材料科学研究总院 | Silicon carbide ceramic product and non-mold casting method thereof |
-
2015
- 2015-12-09 CN CN201510899372.7A patent/CN105503201A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618414A (en) * | 2009-08-06 | 2010-01-06 | 华中科技大学 | Deposition manufacturing method of tools and moulds |
| CN103009461A (en) * | 2012-11-29 | 2013-04-03 | 机械科学研究总院先进制造技术研究中心 | Digital dieless forming method for ceramic biscuit |
| CN104353835A (en) * | 2014-11-15 | 2015-02-18 | 安徽省新方尊铸造科技有限公司 | Part manufacturing method combining 3D (three-dimensional) printing with powder metallurgy |
| CN104496479A (en) * | 2014-12-08 | 2015-04-08 | 中国建筑材料科学研究总院 | Silicon carbide ceramic product and non-mold casting method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393451A (en) * | 2016-08-26 | 2017-02-15 | 米太智能宝石（深圳）有限公司 | Ceramic jewelry crafting method |
| CN111098392A (en) * | 2020-01-08 | 2020-05-05 | 山东大学 | Manufacturing method of large-size ceramic part with complex surface |
| CN113601732A (en) * | 2021-06-26 | 2021-11-05 | 成都凯迪精工科技有限责任公司 | Processing method of ceramic material wind tunnel model |
| CN113601732B (en) * | 2021-06-26 | 2023-11-03 | 成都凯迪精工科技有限责任公司 | Processing method of ceramic material wind tunnel model |
| CN113526961A (en) * | 2021-08-19 | 2021-10-22 | 南通三责精密陶瓷有限公司 | Manufacturing method of silicon carbide mold for glass molding and silicon carbide mold |
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Application publication date: 20160420 |