CN104084582A - False tooth support prepared from metal powder through laser casting and preparation method of false tooth support - Google Patents
False tooth support prepared from metal powder through laser casting and preparation method of false tooth support Download PDFInfo
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- CN104084582A CN104084582A CN201410352037.0A CN201410352037A CN104084582A CN 104084582 A CN104084582 A CN 104084582A CN 201410352037 A CN201410352037 A CN 201410352037A CN 104084582 A CN104084582 A CN 104084582A
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Abstract
The invention discloses a false tooth support prepared from metal powder through laser casting and a preparation method of the false tooth support. The method includes the first step of preparing a three-dimensional model required by the false tooth support through a computer and the second step of stacking the metal powder layer by layer and fusing and casting the metal powder to form the required false tooth support according to the three-dimensional model through a metal powder laser casting device which is connected with the computer and capable of receiving data outputted by the computer for 3D printing. The particle size of the metal powder ranges from 10 micrometers to 30 micrometers. Lasers are generated by a high-energy optical fiber laser device. The power of the high-energy optical fiber laser device is 1000 watts. According to the false tooth support prepared from the metal powder through laser casting and the preparation method of the false tooth support, the metal powder laser casting technology and 3D printing are combined, and therefore the strength and the rigidity of the obtained product are higher than a product obtained through the casting process, the machined false tooth support is more exquisite in form, and the risks of sand holes, shrinkage cavities and cracks can not occur.
Description
Technical field
The present invention relates to a kind of denture and preparation method thereof, particularly, relate to a kind of denture prepared by metal powder laser founding and preparation method thereof that adopts.
Background technology
There is the transformation of an essence in dentistry field, the transformation of processing from casting to digitlization just of the epoch mark in field, oral cavity.
Generate metal laser casting technology, can make production process enter fast digital times.Utilize metal laser founding, except needs mechanical technique, also very important of the dusty material using, its chemical combination, powder shape, granularity and size distribution are determining quality and the precision of workpiece.Titanium has good corrosion resistance and good biocompatibility, its density is about 1/2 of cochrome, nichrome, the weight support frame of same volume is frivolous more than 1/2, and therefore patient wear is comfortable, has also alleviated the burden of artificial tooth to abutment and the negative alveolar ridge that holds lotus power.And compare with pure titanium with precious metal alloys, cochrome has elastic modelling quantity and exceeds the advantage about twice; In addition, it also has high-intensity characteristic.Workpiece good rigidly that these two features have ensured to produce, do not lose again exquisiteness can anti-high load capacity time.
Although metal laser casting technology has a lot of potential users at manufacture field, because its its process is completely different from casting technique, this technology really be put into dental clinic and dental mechanic enterprise, also has certain difficulty.
Summary of the invention
The object of this invention is to provide a kind of for the preparation of the method for denture and the denture of preparation thereof, adopt metal powder laser casting technology and 3D to print combination, make the intensity of products obtained therefrom and hardness higher than by casting technique products obtained therefrom, the denture form processing is more exquisite, and there will not be the risk of sand holes and shrinkage cavity and fracture, have simultaneously easy to operate, time-saving advantage.
In order to achieve the above object, the invention provides a kind of method that adopts metal powder laser founding to prepare denture, wherein, the method comprises: step 1, the threedimensional model by computing mechanism for required denture; Step 2, by being connected with described computer, and the metal powder laser casting apparatus that can receive described computer export data and carry out 3D printing, according to described threedimensional model, successively piles up metal dust and melting casting forms required denture.The particle size range of described metal dust is 10 ~ 30 μ m.Described laser produces by high energy light fibre laser, and described high energy light fibre laser power ascension is 1000 watts, but not conventional 400 watts of existing laser casting technology.
The method of denture is prepared in above-mentioned employing metal powder laser founding, wherein, described successively piles up metal dust and the required denture of melting casting formation, refer to by metal powder laser casting apparatus, often it is carried out when metal dust is piled up to one deck laser sinteredly, then repeat this process to obtain required denture.
The method of denture is prepared in above-mentioned employing metal powder laser founding, and wherein, described denture is piled up founding by the metal dust of 500 ~ 600 layers and formed, and every layer thickness scope is 15 ~ 100 μ m.
The method of denture is prepared in above-mentioned employing metal powder laser founding, wherein, in the Processing Room of the sealed transparent that described denture arranges in metal powder laser casting apparatus, completes; Described Processing Room below is also provided with and is collected in the device of piling up remaining metal dust after founding, and the residual metallic powder of its collection can re-start use after by multi-deck screen.
The method of denture is prepared in above-mentioned employing metal powder laser founding, and wherein, described denture, in preparation process, is filled with nitrogen in described Processing Room.
The method of denture is prepared in above-mentioned employing metal powder laser founding, and wherein, described metal dust is pure titanium or vitallium powder.
The method of denture is prepared in above-mentioned employing metal powder laser founding, and wherein, described vitallium powder comprises by weight percentage: Co 60 ~ 64.5%, chromium 28 ~ 30%, molybdenum 4 ~ 9%, silicon 0.5 ~ 1.5%.
The method of denture is prepared in above-mentioned employing metal powder laser founding, and wherein, it is several arbitrarily in 0 ~ 1% tungsten, manganese, niobium, nitrogen, carbon, beryllium and iron by weight percentage that described vitallium powder also comprises.
The method of denture is prepared in above-mentioned employing metal powder laser founding, and wherein, described denture was prepared by 6 ~ 8 hours.
The present invention also provides a kind of and has prepared denture prepared by the method for denture by above-mentioned employing metal powder laser founding.
Denture prepared by employing metal powder laser provided by the invention founding and preparation method thereof has the following advantages:
Adopt metal powder laser casting technology and 3D to print combination, the metal powder granulates adopting is structurally very meticulous, make the intensity of products obtained therefrom and hardness higher than by casting technique products obtained therefrom, can also improve fatigue durability, therefore the denture form processing is more exquisite, has better aesthetic effect.Thinner snap ring on gained denture, the same with casting relatively thick snap ring out, there is the material behavior of same excellence.When plastotype is identical, the risk of denture that this mode is made fracture is lower, and this denture there will not be sand holes and shrinkage cavity, has avoided the artificial tooth causing thus to collapse the risk of porcelain.The present invention also has easy to operate simultaneously, and the advantage such as save time.
Detailed description of the invention
Below the specific embodiment of the present invention is further described.
The method of denture is prepared in employing metal powder laser provided by the invention founding, comprises:
Step 1, the threedimensional model by computing mechanism for required denture.
Step 2, by being connected with this computer, and the metal powder laser casting apparatus that can receive these computer export data and carry out 3D printing, according to the threedimensional model of this required denture, successively piles up metal dust and melting casting forms required denture.The preparation time of required denture is 6 ~ 8 hours.
Metal dust is successively piled up and melting casting forms required denture, referred to by metal powder laser casting apparatus, often it is carried out when metal dust is piled up to one deck laser sinteredly, then repeat this process to obtain required denture.The laser wherein using produces by high energy light fibre laser, and this high energy light fibre laser power ascension is 1000 watts, but not conventional 400 watts of existing laser casting technology.
This denture is piled up founding by the metal dust of 500 ~ 600 layers and is formed, and every layer thickness scope is 15 ~ 100 μ m.
The particle size range of metal dust is 10 ~ 30 μ m.This metal dust is pure titanium or vitallium powder, comprises by weight percentage: Co 60 ~ 64.5%, chromium 28 ~ 30%, molybdenum 4 ~ 9%, silicon 0.5 ~ 1.5%, and several arbitrarily lower than in 1% tungsten, manganese, niobium, nitrogen, carbon, beryllium and iron.
In the Processing Room of the sealed transparent that this denture arranges in metal powder laser casting apparatus, complete; This denture, in preparation process, is filled with nitrogen in this Processing Room.Processing Room below is also provided with and is collected in the device of piling up remaining metal dust after founding, and the residual metallic powder of its collection can re-start use after by multi-deck screen.
The present invention also provides by above-mentioned employing metal powder laser founding and has prepared denture prepared by the method for denture.
Embodiment 1 ~ 4
The metal dust composition adopting sees the following form 1.
Table 1. laser casting is prepared the metal dust component list of denture.
Just as other metal and alloy, the metal that the present invention uses also has lattice structure when solid-state.Identical with casting when laser sintered, metal is melted, and under liquid condition, lattice structure disappears.In natural cooling process subsequently, no matter be to adopt foundry engieering or laser casting technique, the material of fusing all can solidify again, thereby again forms lattice structure.Identical with under as-cast condition of (fracture) percentage elongation under lf state of metal that the present invention uses.But because lf part has very fine-grained structure, make the intensity of gained workpiece and hardness higher than gained under as-cast condition, the substrate frame form therefore processing is more exquisite.
Denture prepared by employing metal powder laser provided by the invention founding and preparation method thereof, adopt metal powder laser casting technology and 3D to print combination, pile up by metal dust, under laser sintered effect, increase material casting, substituted existing metal cutting or common model casting technique.The metal powder granulates adopting is structurally very meticulous, makes the intensity of products obtained therefrom and hardness higher than by casting technique products obtained therefrom, can also improve fatigue durability, and the denture form therefore processing is more exquisite, has better aesthetic effect.And in the time that plastotype is identical, the risk of denture that this mode is made fracture is lower, and this denture there will not be sand holes and shrinkage cavity, and that has avoided causing thus collapses porcelain risk.The present invention also has easy to operate simultaneously, and the advantage such as save time.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Read after foregoing those skilled in the art, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. adopt metal powder laser founding to prepare a method for denture, it is characterized in that, the method comprises:
Step 1, the threedimensional model by computing mechanism for required denture;
Step 2, by being connected with described computer, and the metal powder laser casting apparatus that can receive described computer export data and carry out 3D printing, according to described threedimensional model, successively piles up metal dust and melting casting forms required denture; The particle size range of described metal dust is 10 ~ 30 μ m; Described laser produces by high energy light fibre laser, and described high energy light fibre laser power is 1000 watts.
2. the method for denture is prepared in employing metal powder laser as claimed in claim 1 founding, it is characterized in that, described successively piles up metal dust and the required denture of melting casting formation, refer to by metal powder laser casting apparatus, often it is carried out when metal dust is piled up to one deck laser sinteredly, then repeat this process to obtain required denture.
3. the method for denture is prepared in employing metal powder laser as claimed in claim 2 founding, it is characterized in that, described denture is piled up founding by the metal dust of 500 ~ 600 layers and formed, and every layer thickness scope is 15 ~ 100 μ m.
4. the method for denture is prepared in employing metal powder laser as claimed in claim 3 founding, it is characterized in that, in the Processing Room of the sealed transparent that described denture arranges in metal powder laser casting apparatus, completes; Described Processing Room below is also provided with and is collected in the device of piling up remaining metal dust after founding, and the residual metallic powder of its collection can re-start use after by multi-deck screen.
5. the method for denture is prepared in employing metal powder laser as claimed in claim 4 founding, it is characterized in that, described denture, in preparation process, is filled with nitrogen in described Processing Room.
6. the method for denture is prepared in employing metal powder laser as claimed in claim 3 founding, it is characterized in that, described metal dust is pure titanium or vitallium powder.
7. the method for denture is prepared in employing metal powder laser as claimed in claim 6 founding, it is characterized in that, described vitallium powder comprises by weight percentage: Co 60 ~ 64.5%, chromium 28 ~ 30%, molybdenum 4 ~ 9%, silicon 0.5 ~ 1.5%.
8. the method for denture is prepared in employing metal powder laser as claimed in claim 7 founding, it is characterized in that, it is several arbitrarily in 0 ~ 1% tungsten, manganese, niobium, nitrogen, carbon, beryllium and iron by weight percentage that described vitallium powder also comprises.
9. the method for denture is prepared in employing metal powder laser as claimed in claim 1 founding, it is characterized in that, described denture was prepared by 6 ~ 8 hours.
10. prepare denture prepared by the method for denture by the employing metal powder laser founding described in any one in claim 1 ~ 9 for one kind.
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| CN201410352037.0A CN104084582A (en) | 2014-07-23 | 2014-07-23 | False tooth support prepared from metal powder through laser casting and preparation method of false tooth support |
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| CN201410352037.0A CN104084582A (en) | 2014-07-23 | 2014-07-23 | False tooth support prepared from metal powder through laser casting and preparation method of false tooth support |
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Cited By (5)
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| CN104999078A (en) * | 2015-07-16 | 2015-10-28 | 广州中国科学院先进技术研究所 | Method for preparing false tooth support through 3D printing laser stereo-lithography technology |
| CN105033252A (en) * | 2015-07-23 | 2015-11-11 | 南京航空航天大学 | Method for preparing shape memory alloy intravascular stent based on automatic powder laying laser combination machining technology |
| CN107107187A (en) * | 2014-12-12 | 2017-08-29 | 美题隆公司 | The increasing material manufacturing of the product containing beryllium |
| CN107354457A (en) * | 2017-07-25 | 2017-11-17 | 南华大学 | The laser formation method of metal dust |
| CN108296481A (en) * | 2016-12-10 | 2018-07-20 | 广东汉唐量子光电科技有限公司 | A kind of CoCrMo alloys corona 3D printing and electrobrightening combined machining method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107107187A (en) * | 2014-12-12 | 2017-08-29 | 美题隆公司 | The increasing material manufacturing of the product containing beryllium |
| US10500639B2 (en) | 2014-12-12 | 2019-12-10 | Materion Corporation | Additive manufacturing of articles comprising beryllium |
| CN107107187B (en) * | 2014-12-12 | 2020-06-26 | 美题隆公司 | Additive manufacturing of beryllium-containing articles |
| US11904391B2 (en) | 2014-12-12 | 2024-02-20 | Materion Corporation | Additive manufacturing of articles comprising beryllium |
| CN104999078A (en) * | 2015-07-16 | 2015-10-28 | 广州中国科学院先进技术研究所 | Method for preparing false tooth support through 3D printing laser stereo-lithography technology |
| CN105033252A (en) * | 2015-07-23 | 2015-11-11 | 南京航空航天大学 | Method for preparing shape memory alloy intravascular stent based on automatic powder laying laser combination machining technology |
| CN108296481A (en) * | 2016-12-10 | 2018-07-20 | 广东汉唐量子光电科技有限公司 | A kind of CoCrMo alloys corona 3D printing and electrobrightening combined machining method |
| CN107354457A (en) * | 2017-07-25 | 2017-11-17 | 南华大学 | The laser formation method of metal dust |
| CN107354457B (en) * | 2017-07-25 | 2019-03-12 | 南华大学 | The laser formation method of metal powder |
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Application publication date: 20141008 |