CN110819851A - Cobalt-chromium ceramic alloy disc for engraving and fixing false teeth and preparation method thereof - Google Patents
Cobalt-chromium ceramic alloy disc for engraving and fixing false teeth and preparation method thereof Download PDFInfo
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- CN110819851A CN110819851A CN201911179283.XA CN201911179283A CN110819851A CN 110819851 A CN110819851 A CN 110819851A CN 201911179283 A CN201911179283 A CN 201911179283A CN 110819851 A CN110819851 A CN 110819851A
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- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910000684 Cobalt-chrome Inorganic materials 0.000 title claims abstract description 26
- 239000010952 cobalt-chrome Substances 0.000 title claims abstract description 26
- 229910002110 ceramic alloy Inorganic materials 0.000 title claims abstract description 8
- 238000002360 preparation method Methods 0.000 title claims description 8
- 239000000956 alloy Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 48
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 43
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 20
- 239000011651 chromium Substances 0.000 claims abstract description 20
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 20
- 239000010941 cobalt Substances 0.000 claims abstract description 20
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 20
- 239000010936 titanium Substances 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 19
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 18
- 239000011733 molybdenum Substances 0.000 claims abstract description 18
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 18
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 18
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 18
- 239000010937 tungsten Substances 0.000 claims abstract description 18
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 18
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000002844 melting Methods 0.000 claims abstract description 17
- 230000008018 melting Effects 0.000 claims abstract description 17
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 16
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 16
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000003723 Smelting Methods 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 238000007514 turning Methods 0.000 claims abstract description 8
- 229910002065 alloy metal Inorganic materials 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000010892 electric spark Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims abstract description 6
- 238000003754 machining Methods 0.000 claims abstract description 4
- 229910052573 porcelain Inorganic materials 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 17
- 239000012535 impurity Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 5
- 239000002105 nanoparticle Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000009763 wire-cut EDM Methods 0.000 claims description 2
- 210000000214 mouth Anatomy 0.000 abstract description 6
- 239000012567 medical material Substances 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 229910000978 Pb alloy Inorganic materials 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 210000003128 head Anatomy 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000005548 dental material Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dental Prosthetics (AREA)
- Dental Preparations (AREA)
Abstract
The invention relates to a medical material for oral cavity, in particular to a cobalt-chromium ceramic alloy disc for engraving and fixing false teeth, which comprises the following raw materials in percentage by weight: 50 to 65 percent of cobalt, 20 to 35 percent of chromium, 3 to 6 percent of molybdenum, 1 to 3 percent of titanium, 5 to 7 percent of tungsten, 0.08 to 0.3 percent of lanthanum, 0.1 to 0.5 percent of cerium, 0.09 to 0.3 percent of yttrium and 0.06 to 0.2 percent of strontium; the method comprises the following steps: 1. melting tungsten by using a high-frequency high-temperature furnace, and sequentially adding cobalt, chromium and molybdenum; 2. introducing the melted metal into a vacuum smelting furnace, adding cerium, lanthanum, titanium, yttrium and strontium materials for vacuum melting, 3, introducing the melted metal solution into a cuboid mold, forming in vacuum, taking out and cooling; 4. and (3) cutting off and separating slag in the alloy by adopting a material reduction method for the cooled alloy metal ingot, machining the residual material by adopting an electric spark wire cutting and lathe turning mode, and machining a cobalt-chromium ceramic alloy disc with the diameter of 98mm and the thickness of 10mm-25 mm. Compared with the existing product, the product has high engraving yield and stable quality, and is suitable for popularization and use.
Description
Technical Field
The invention relates to a medical material for oral cavity, in particular to a cobalt-chromium ceramic alloy disc for engraving and fixing false teeth and a preparation method thereof.
Background
The alloy material for dental restoration is used for manufacturing crowns and bridges for dental fixation and restoration, is a medical biological metal material, and has extremely strict requirements on safety because a dental material product is placed in an oral cavity for a long time and is in direct contact with human tissues and must have good biocompatibility with a human body. Meanwhile, the alloy material for dental restoration has the same strict requirement on the effectiveness of a human body, because teeth are often in the environment of oral liquid for a long time besides being in contact with various acidic and alkaline substances when people eat the alloy material, the alloy material for dental restoration not only has no toxicity and harm to the human body, but also has the physical performance index requirements of high corrosion resistance, proper strength, hardness, bonding strength of metal and porcelain powder and the like, and can adapt to soft and hard tissues in the oral cavity and good machinability.
The manufacturing of false teeth by alloy materials (granules) for dental restoration belongs to the traditional false tooth manufacturing method, the manufacturing procedure is complicated, and the procedures of filling undercut, smearing gap agent, manufacturing wax pattern, embedding, roasting, casting, lathing metal and the like are required. The traditional false tooth has low processing efficiency and high labor cost, and generates a large amount of garbage, smog and dust, so that the workshop environment is poor and the health of workers is influenced. With the development of science and technology, the restoration of oral teeth presents an overturned revolution, which is not the restoration process, and the manufacture of false teeth advances the digital oral age at present.
The cobalt-chromium porcelain alloy powder is printed with a crown and a crown bridge by a material increase method 3D, the printed crown and the printed crown bridge are only molded and must be sintered at high temperature, and oxide layers of the crown and the crown bridge after high-temperature sintering can only be manually polished and cleaned, so that the thickness of the wall thickness of the crown is uneven, porcelain cracks and collapses due to uneven thickness of the wall thickness of the crown, meanwhile, the crown and the crown bridge deform due to high-temperature sintering, the edge of a false tooth worn by a patient is not closely fit, bacteria and food residues in the oral cavity enter, the service life of the tooth is shortened, and the health of the human body is influenced.
At present, a material reduction method CAD/CAM tooth engraving machine is used for manufacturing fixed false teeth, a cobalt-chromium porcelain alloy disc for dental restoration is used for manufacturing false teeth by using an integral solution of the CAD/CAM tooth engraving machine, and the method has the characteristics of simplicity in operation, high precision, edge sealing, high speed, low cost and the like, effectively improves the working efficiency, reduces pollution, is an important milestone for the development of oral restoration process industry, enables more common people to be mounted on good teeth, thoroughly solves the pain point and difficulty of oral clinical medicine because the digital technology can effectively treat complex clinical conditions and provide consistent and high-quality restorations, and only has the production and sale of WHITE PERKS CE0483 in Germany and Eisenbacher Dentware, GmbH and CE0434 in dentistry restoration abroad at present, and is still in a blank state in China.
Disclosure of Invention
In order to solve the problems in the prior art, the following technical scheme is provided through continuous tests according to the understanding of metal materials and the research on performance and application of the metal materials: a cobalt-chromium porcelain alloy disc for engraving and fixing false teeth comprises the following raw materials in percentage by weight: 50 to 65 percent of cobalt, 20 to 35 percent of chromium, 3 to 6 percent of molybdenum, 1 to 3 percent of titanium, 5 to 7 percent of tungsten, 0.08 to 0.3 percent of lanthanum, 0.1 to 0.5 percent of cerium, 0.09 to 0.3 percent of yttrium and 0.06 to 0.2 percent of strontium.
The preparation method of the cobalt-chromium porcelain alloy disc for engraving and fixing the false teeth comprises the following steps:
firstly, melting tungsten by using a high-frequency high-temperature furnace, and then sequentially adding cobalt, chromium and molybdenum according to the melting point of the material;
secondly, the metal is led into a vacuum smelting furnace after being melted, and then cerium, lanthanum, titanium, yttrium and strontium materials are added for vacuum melting, the power is 60-90 Kw, and the time is 60-90 minutes;
thirdly, guiding the melted metal solution into a cuboid mold, and taking out and cooling after forming in vacuum; the forming die is placed on a bracket with a vibration device in a vacuum smelting furnace, and the vibration is started when the molten alloy which is smelted and melted is introduced so as to lead alloy impurities to be gathered in the middle of a steel ingot;
and fourthly, cutting off a casting head and oxide layers and impurities on the peripheral surface of the cooled alloy metal ingot by adopting a material reducing processing method, separating a slag gathering part in the alloy, and processing the residual material by adopting an electric spark wire cutting and lathe turning processing mode to process a cobalt-chromium baked porcelain alloy disc with the diameter of 98mm and the thickness of 10mm-25 mm.
The mould is a special steel cuboid;
the forming die is placed on a bracket with a vibration device in the vacuum smelting furnace;
the machining method comprises wire cut electrical discharge machining and turning.
Compared with the prior art, the invention has the beneficial effects that:
the main materials of cobalt, chromium and titanium for the oral cavity false tooth are selected because of good biocompatibility but lack of physical properties, so that the tungsten and molybdenum are added because the cobalt, chromium and titanium can enable the alloy material to keep extremely high strength, creep resistance, oxidation resistance and corrosion resistance, and in addition, the cobalt, chromium and titanium can ensure no fracture in long-term use, namely have physical properties such as high-cycle fatigue resistance and low-cycle fatigue resistance.
The rare earth yttrium is an important additive of the alloy, has unique extra-nuclear electron arrangement and higher solid solubility in the alloy, can purify alloy solution, improve alloy structure, improve the mechanical properties of the alloy at room temperature and high temperature, enhance the corrosion resistance of the alloy and the like; the rare earth element strontium is added because the element plays an important role in the development of human bones and teeth.
The materials which are generally used for processing are conventional material monomers sold in the market, each monomer material has a certain amount of impurity content, and all kinds of impurities are relatively more in combination, and can be dispersed into alloy materials during processing and smelting, so that the quality of the materials and the processing utilization rate of finished products are reduced.
The product is registered and tested by the quality supervision and inspection center of northern medical instruments of the State food and drug administration, the surface of an alloy disc is smooth, no burr and crack are seen, no oxide layer is seen, the density is 8.56 (g/cm), the corrosion resistance is 7.53ug/cm (the national standard is less than 200 ug/cm), the average bonding strength of gold and porcelain is 48.5 MPa (the national standard is more than or equal to 25 MPa), and the linear expansion coefficient is 14.13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A cobalt-chromium porcelain alloy disc for engraving customized fixed dentures comprises the following raw materials in percentage by weight: 50% of cobalt, 35% of chromium, 6% of molybdenum, 1% of titanium, 7% of tungsten, 0.2% of lanthanum, 0.4% of cerium, 0.2% of yttrium and 0.2% of strontium;
the cobalt, the chromium, the molybdenum, the titanium and the tungsten are high-purity materials;
the lanthanum, cerium, yttrium and strontium are high-purity particle materials or nano-particle materials;
the preparation method comprises the following steps:
firstly, melting tungsten by using a high-frequency high-temperature furnace, and then sequentially adding cobalt, chromium and molybdenum according to the melting point of the material;
secondly, after the metal is melted, the metal is led into a vacuum smelting furnace, and then cerium, lanthanum, titanium, yttrium and strontium materials are added for vacuum melting, wherein the power is 90 Kw, and the time is 90 minutes;
thirdly, guiding the melted metal solution into a cuboid mold, and taking out and cooling after forming in vacuum; the forming die is placed on a bracket with a vibration device in a vacuum smelting furnace, and the vibration is started when the molten alloy which is smelted and melted is introduced so as to lead alloy impurities to be gathered in the middle of a steel ingot;
and fourthly, cutting off a casting head and oxide layers and impurities on the peripheral surface of the cooled alloy metal ingot by adopting a material reducing processing method, separating a slag gathering part in the alloy, and processing the residual material by adopting an electric spark wire cutting and lathe turning processing mode to process a cobalt-chromium baked porcelain alloy disc with the diameter of 98mm and the thickness of 10 mm.
Example 2
A cobalt-chromium porcelain alloy disc for engraving customized fixed dentures comprises the following raw materials in percentage by weight: 60% of cobalt, 29% of chromium, 3% of molybdenum, 2% of titanium, 5% of tungsten, 0.2% of lanthanum, 0.5% of cerium, 0.1% of yttrium and 0.2% of strontium;
the cobalt, the chromium, the molybdenum, the titanium and the tungsten are high-purity materials;
the lanthanum, cerium, yttrium and strontium are high-purity particle materials or nano-particle materials;
the preparation method comprises the following steps:
firstly, melting tungsten by using a high-frequency high-temperature furnace, and then sequentially adding cobalt, chromium and molybdenum according to the melting point of the material;
secondly, after the metal is melted, the metal is led into a vacuum smelting furnace, and then cerium, lanthanum, titanium, yttrium and strontium materials are added for vacuum melting, wherein the power is 80 Kw, and the time is 82 minutes;
thirdly, guiding the melted metal solution into a cuboid mold, and taking out and cooling after forming in vacuum; the forming die is placed on a bracket with a vibration device in a vacuum smelting furnace, and the vibration is started when the molten alloy which is smelted and melted is introduced so as to lead alloy impurities to be gathered in the middle of a steel ingot;
and fourthly, cutting off a casting head and oxide layers and impurities on the peripheral surface of the cooled alloy metal ingot by adopting a material reducing processing method, separating a slag gathering part in the alloy, and processing the residual material by adopting an electric spark wire cutting and lathe turning processing mode to process a cobalt-chromium baked porcelain alloy disc with the diameter of 98mm and the thickness of 20 mm.
Example 3
A cobalt-chromium porcelain alloy disc for engraving customized fixed dentures comprises the following raw materials in percentage by weight: 65% of cobalt, 20% of chromium, 5% of molybdenum, 3% of titanium, 6% of tungsten, 0.3% of lanthanum, 0.3% of cerium, 0.3% of yttrium and 0.1% of strontium;
the cobalt, the chromium, the molybdenum, the titanium and the tungsten are high-purity materials;
the lanthanum, cerium, yttrium and strontium are high-purity particle materials or nano-particle materials;
the preparation method comprises the following steps:
firstly, melting tungsten by using a high-frequency high-temperature furnace, and then sequentially adding cobalt, chromium and molybdenum according to the melting point of the material;
secondly, after the metal is melted, the metal is led into a vacuum smelting furnace, and then cerium, lanthanum, titanium, yttrium and strontium materials are added for vacuum melting with the power of 75 Kw for 72 minutes;
thirdly, guiding the melted metal solution into a cuboid mold, and taking out and cooling after forming in vacuum; the forming die is placed on a bracket with a vibration device in a vacuum smelting furnace, and the vibration is started when the molten alloy which is smelted and melted is introduced so as to lead alloy impurities to be gathered in the middle of a steel ingot;
and fourthly, cutting off a casting head and oxide layers and impurities on the peripheral surface of the cooled alloy metal ingot by adopting a material reducing processing method, separating a slag gathering part in the alloy, and processing the residual material by adopting an electric spark wire cutting and lathe turning processing mode to process a cobalt-chromium baked porcelain alloy disc with the diameter of 98mm and the thickness of 25 mm.
The main materials of the cobalt-chromium alloy disc for engraving and fixing false teeth are selected from cobalt, chromium and titanium, and the three metal elements have good biocompatibility but lack of physical properties, so that tungsten and molybdenum are added because the alloy materials can keep extremely high strength, creep resistance, oxidation resistance and corrosion resistance, and in addition, the cobalt-chromium alloy disc can ensure no fracture in long-term use and has physical properties such as high-cycle fatigue resistance and low-cycle fatigue resistance.
The rare earth yttrium is an important additive of the alloy, has unique extra-nuclear electron arrangement and higher solid solubility in the alloy, can purify alloy solution, improve alloy structure, improve the mechanical properties of the alloy at room temperature and high temperature, enhance the corrosion resistance of the alloy and the like; the rare earth element strontium is added because the element plays an important role in the development of human bones and teeth.
The materials which are generally used for processing are conventional material monomers sold in the market, each monomer material has a certain amount of impurity content, and all kinds of impurities are relatively more in combination, and are dispersed into alloy materials during processing and smelting, so that the quality of the materials and the processing utilization rate of finished products are reduced. In the process of cold working the alloy ingot again, except that the metal impurity part can not be reused, other cutting waste materials can also be used for smelting again, and the metal impurity part can not be reused with other enterprises, so that the material saving is further realized.
The product of the invention is registered and tested by the quality supervision and inspection center of the northern medical instrument of the State food and drug administration, and the inspection result alloy disc has a smooth surface, no burr and crack, no oxide layer, density of 8.56 (g/cm), corrosion resistance of 7.53ug/cm (the State Standard is less than 200 ug/cm), average golden and porcelain bonding strength of 48.5 MPa (the State Standard is more than or equal to 25 MPa), and linear expansion coefficient of 14.13. The product is used by NOVADENT oral technology GmbH of Germany, the same tooth carving machine, the same crown and crown bridge, the same carving knife and the cobalt-chromium porcelain alloy disc of Germany carve 40-50 crowns, the carving knife is scrapped, but the product of the invention can be carved 80-100 under the same condition, and the cost performance of the product exceeds that of the product manufactured by Germany.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a carving is fixed cobalt chromium porcelain alloy disc for artificial tooth which characterized in that: a cobalt-chromium porcelain alloy disc for engraving and fixing false teeth comprises the following raw materials in percentage by weight: cobalt 50-65%, chromium 20-35%, molybdenum 3-6%, titanium 1-3%, tungsten 5-7%, lanthanum 0.08-0.3%, cerium 0.1-0.5%, yttrium 0.09-0.3%, and strontium 0.06-0.2%.
2. The method for preparing the cobalt-chromium porcelain alloy disc for engraving and fixing the false teeth according to the claim 1 is characterized in that: a preparation method of a cobalt-chromium porcelain alloy disc for engraving customized fixed dentures comprises the following steps:
firstly, melting tungsten by using a high-frequency high-temperature furnace, and then sequentially adding cobalt, chromium and molybdenum according to the melting point of the material;
secondly, the metal is led into a vacuum smelting furnace after being melted, and then cerium, lanthanum, titanium, yttrium and strontium materials are added for vacuum melting, the power is 60-90 Kw, and the time is 60-90 minutes;
thirdly, guiding the melted metal solution into a cuboid mold, and taking out and cooling after forming in vacuum;
and fourthly, cutting off a casting head and oxide layers and impurities on the peripheral surface of the cooled alloy metal ingot by adopting a material reducing processing method, separating a slag gathering part in the alloy, and processing the residual material by adopting an electric spark wire cutting and lathe turning processing mode to process a cobalt-chromium baked porcelain alloy disc with the diameter of 98mm and the thickness of 10mm-25 mm.
3. The cobalt-chromium porcelain alloy disc for engraving customized permanent dentures according to claim 1, characterized in that: the cobalt, the chromium, the molybdenum, the titanium and the tungsten are high-purity materials; the lanthanum, cerium, yttrium and strontium are high-purity particle materials or nano-particle materials.
4. The method for preparing the cobalt-chromium ceramic alloy disc for engraving customized permanent dentures according to claim 2, which is characterized in that: the mould is a special steel cuboid.
5. The method for preparing the cobalt-chromium ceramic alloy disc for engraving the customized permanent denture, according to the claim 2, is characterized in that: the forming die is placed on a bracket with a vibration device in the vacuum smelting furnace.
6. The method for preparing the cobalt-chromium ceramic alloy disc for engraving the customized permanent denture, according to the claim 2, is characterized in that: the machining method comprises wire cut electrical discharge machining and turning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911179283.XA CN110819851A (en) | 2019-11-27 | 2019-11-27 | Cobalt-chromium ceramic alloy disc for engraving and fixing false teeth and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911179283.XA CN110819851A (en) | 2019-11-27 | 2019-11-27 | Cobalt-chromium ceramic alloy disc for engraving and fixing false teeth and preparation method thereof |
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| CN110819851A true CN110819851A (en) | 2020-02-21 |
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| CN201911179283.XA Pending CN110819851A (en) | 2019-11-27 | 2019-11-27 | Cobalt-chromium ceramic alloy disc for engraving and fixing false teeth and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111557752A (en) * | 2020-05-25 | 2020-08-21 | 南通今日高科技新材料股份有限公司 | One-step formed integral porcelain crown bridge and manufacturing method thereof |
| CN115161516A (en) * | 2022-07-18 | 2022-10-11 | 嘉兴数字三维智能制造研究院有限公司 | Cobalt-chromium alloy powder material special for dentistry |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2352663C1 (en) * | 2007-10-02 | 2009-04-20 | Юлия Алексеевна Щепочкина | Alloy on basis of cobalt |
| CN108601859A (en) * | 2016-02-03 | 2018-09-28 | 德国不锈钢特钢有限及两合公司 | The method that precipitation-hardening or mixed crystal are strengthened, produce implantation material or prosthese after the application of the cobalt-base alloys of bio-compatible and material removal |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2352663C1 (en) * | 2007-10-02 | 2009-04-20 | Юлия Алексеевна Щепочкина | Alloy on basis of cobalt |
| CN108601859A (en) * | 2016-02-03 | 2018-09-28 | 德国不锈钢特钢有限及两合公司 | The method that precipitation-hardening or mixed crystal are strengthened, produce implantation material or prosthese after the application of the cobalt-base alloys of bio-compatible and material removal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111557752A (en) * | 2020-05-25 | 2020-08-21 | 南通今日高科技新材料股份有限公司 | One-step formed integral porcelain crown bridge and manufacturing method thereof |
| CN115161516A (en) * | 2022-07-18 | 2022-10-11 | 嘉兴数字三维智能制造研究院有限公司 | Cobalt-chromium alloy powder material special for dentistry |
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