CN104546161A - Process and device for forming NiTi Dimple orthodontic tooth arch wire - Google Patents
Process and device for forming NiTi Dimple orthodontic tooth arch wire Download PDFInfo
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- CN104546161A CN104546161A CN201410820692.4A CN201410820692A CN104546161A CN 104546161 A CN104546161 A CN 104546161A CN 201410820692 A CN201410820692 A CN 201410820692A CN 104546161 A CN104546161 A CN 104546161A
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- niti
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- dental arch
- arch filament
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Abstract
The invention relates to a process and a device for forming a NiTi Dimple orthodontic tooth arch wire. Compared with a general orthodontic tooth arch wire, the NiTi Dimple orthodontic tooth arch wire has the characteristics that a raised part is arranged in the middle of the NiTi Dimple orthodontic tooth arch wire, the NiTi Dimple orthodontic tooth arch wire has a special function, the problems of treatment failure caused by difficult accurate positioning during mounting of the orthodontic tooth arch wire by a doctor and lateral displacement of the orthodontic tooth arch wire under the action of a deformed tooth in a treatment process, and the like are solved, and the chair-side working time of the doctor is greatly shortened. The basic process for the NiTi Dimple orthodontic tooth arch wire comprises the following steps: 1, drawing a wire; 2, performing ageing treatment, namely winding the drawn wire on the specially-made device, putting the device in a heating furnace, controlling the ageing temperature to be 500-580 DEG C, keeping the temperature for 30-180 minutes, taking out, and cooling by water; 3, performing surface treatment. With the process and the device, batch production of the NiTi Dimple orthodontic tooth arch wire is realized.
Description
Technical field
The present invention relates to a kind of moulding process and device thereof of orthodontic dental arch filament.
Background technology
In recent years along with the development of society and the raising of living standards of the people, the demand of people to U.S. rises just year by year, and to have the neatly snow-white tooth of a bite be beautiful basic embodiment is also the guarantee improving the social confidence of people., along with the change of people's habits and customs and food type, mouth disease quantity just significantly promotes, especially population of adolescent, needs the number accepting Orthodontic Treatment suddenly to increase.Orthodontics also becomes Hot subject within this context.
Correction dental arch filament is product indispensable in current orthodontic therapy technology, and correction dental arch filament is supplied to the suitable Orthodontic force of tooth deformity by orthodontic bracket thus reaches traction tooth to correct position rescuing in process.Correction dental arch filament conventional at present comprises stainless steel correction dental arch filament, β titanium correction dental arch filament and NiTi correction dental arch filament.Stainless steel dental arch filament is mainly used in the intense adjustment stage of rescuing later stage tooth, and NiTi correction dental arch is due to its high resilience and shape memory, and the tooth being mainly used in rescuing early stage comes into line the use of stage and complicated case.
But, often doctor needs to do deformation process in various degree according to different cases to dental arch filament, to meet the needs of difference in functionality, stainless steel and β titanium correction dental arch filament due to its formability better, different shapes and various song can be bent into according to different needs.But niti material has hot activation effect and super elastic characteristics due to it, at room temperature the cold deformation ability of NiTi correction dental arch filament is poor, cannot bend out the song of different function, can only be shaped by heat treated mode.
NiTi correction dental arch filament is supplied to the major product that tooth continues low force the initial stage of rescuing, and because teeth arrangement in early stage is uneven, will reach perfectly arc and effect and then must be accurately positioned in oral cavity by dental arch filament after rescuing.Traditionally, production firm often does a mark at the middle place of dental arch filament and facilitates clinician to be positioned in the oral cavity of patient by correction dental arch filament accurately.This mark is generally made up of ink or vegetable colour etc., but this marker color is more shallow and easily come off, especially mark after dental arch filament places a period of time in oral cavity and be almost difficult to recognize again, adjust arch wire position to doctor's later stage and bring very large inconvenience, if the position location of the adjustment position of later stage dental arch filament and in earlier stage dental arch filament is inconsistent be easy to the sidesway causing arch wire, the face rescuing rear patient there will be asymmetric situation, and this will be serious malpractice.
Present stage, the correction dental arch filaments such as stainless steel, β titanium have produced the dental arch filament of Intermediate Gray shape for lugs, middle high-visible accurate location and the adjustment facilitating doctor of bossing, and the effective sidesway prevent or reducing arch wire.But because the cold deformation ability of Nitinol is poor, the also unrealized batch production of current NiTi dimple dental arch filament.
Summary of the invention
For solving above-described problem, the present invention proposes a kind of NiTi dimple correction dental arch filament moulding process and device thereof, the present invention makes correction silk size accurate by using specific mould, and achieves mass production.
NiTi dimple correction dental arch filament moulding process of the present invention carries out according to the following steps:
The drawing of step one, silk material, by annealed for raw material silk → hot pull → annealing → cold drawing → alignment, peeling, polishing → correction dental arch filament target size raw material thread.
Selected materials of the present invention is the nickel-titanium-copper alloy closely waiting atomic ratio Nitinol and add amount of copper, strict control heating-up temperature and final cold deformation in silk material drawing process, annealing temperature is 680 DEG C ~ 750 DEG C, hot pull temperature is 620 DEG C ~ 720 DEG C, deflection total after cold drawing is 30% ~ 55%, take-up speed is 1 ~ 4 m/min, excessive velocities causes heating or annealing slack, the difficulty increasing lower road drawing is not removed in cold work hardening completely, speed is crossed and then can be made a material burning, coarse grains slowly, causes a material to become fragile and loses super-elasticity.
Step 2, Ageing Treatment, be wound in silk material on the device designed by the present invention, is placed in firing equipment, sets aging temp and temperature retention time.
Silk material unsuitable tension during patrix, otherwise easily there is fracture of wire situation when Forming press (2) is locked, the mould of first-class silk is put into heating furnace, and temperature is set to 500 DEG C ~ 580 DEG C, and temperature retention time is 30 ~ 180 minutes.
Step 3, surface treatment.
There is one deck low-level oxidation layer aging strengthening model rear surface, the outward appearance that this oxide layer not only affects correction dental arch filament adds a coefficient of friction on material surface simultaneously, increase the frictional force between correction dental arch filament and bracket, be unfavorable for the slip of bracket in orthodontic therapy process, so need remove surface scale, the present invention's acid used is HF: HNO
3: H
2o=(1.5 ~ 2.5): (8 ~ 15): (10 ~ 20), acid should not be excessively strong, otherwise easily make a material embrittlement.
NiTi dimple correction dental arch filament shaped device of the present invention comprises the force screw (5) of main body correction dental arch filament mould (1), correction dental arch filament intermediate raised portion Forming press (2), die cover plate (4), die cover plate holding screw (6) and Forming press (2).During patrix, silk material often dials next Forming press (2) by that analogy around a circle, until upper full whole mould, cover die cover plate (4) and screw holding screw (6), slowly by force screw locking until silk material reaches required form, finally press method process described in step 2.Correction dental arch filament prepared by the present invention has the following advantages:
1, by changing Technology for Heating Processing, the dental arch filament with superlastic and hot activation two kinds of different performances can be obtained;
2, the dental arch filament that prepared by the present invention enables doctor locate accurately fast, reduces the chair other working time, alleviates the misery of patient;
3, correction dental arch filament center protrusion part effectively prevents the sidesway of dental arch filament.
Accompanying drawing explanation
Fig. 1 NiTi dimple of the present invention correction dental arch filament shaped device structural representation.
Structural representation after Fig. 2 NiTi dimple of the present invention correction dental arch filament shaped device locked mode.
Fig. 3 Forming press schematic diagram of the present invention.
Detailed description of the invention
The present invention develops out multiple moulding process by any combination change of technological parameter; the thinking of shaped device also can change and design similar device; this all belongs to scope, and the concrete case study on implementation below announced also should be included within scope.
Detailed description of the invention one
NiTi dimple correction dental arch filament moulding process of the present invention carries out according to the following steps:
1, the drawing of silk material, selected raw material are the Nitinol closely waiting atomic percent, string diameter is Φ 0.8, annealed → hot pull → annealing → cold drawing → alignment, peeling, polishing → correction dental arch filament target size raw material thread (silk material cross section is circular), wherein annealing temperature is 720 DEG C, hot-drawn temperature is 680 DEG C, and final cold deformation is 40%.
2, Ageing Treatment, round silk step 1 drawn is wound on the device prepared by the present invention, is put in heating furnace, and temperature is set to 530 DEG C, is incubated 40 minutes, water-cooled after taking out.
3, surface treatment, correction dental arch filament good for heat treatment is prepared required product, wherein rough polishing 30 minutes through the technique such as rough polishing, pickling, essence throwing, cleaning, and the proportioning of pickling acid used is: HF: HNO
3: H
2o=2: 10: 15, essence is thrown 2 hours.
Detailed description of the invention two
The difference of present embodiment and embodiment one is, the string diameter of raw material described in step 1 is Φ 1.2, and target material silk cross section is rectangle, and annealing temperature is 750 DEG C, and hot-drawn temperature is 700 DEG C, and all the other steps are identical with embodiment one.
Detailed description of the invention three
The difference of present embodiment and embodiment one is, raw material described in step 1 are nickel-titanium-copper alloy, and in step 2, aging temp is 520 DEG C, and temperature retention time 35 minutes, all the other steps are identical with embodiment one.
Detailed description of the invention four
Correction dental arch filament prepared by above embodiment is super-elasticity correction silk, and the difference of present embodiment and embodiment one is that in step 2, aging temp is 500 DEG C, and temperature retention time is 2.5 hours, and all the other steps are identical with embodiment one.
Claims (7)
1. NiTi Dimple correction dental arch filament moulding process, is characterized in that described technique is carried out as follows:
The drawing of step one, silk material, by annealed for raw material silk → hot pull → annealing → cold drawing → alignment, peeling, polishing → correction dental arch filament target size raw material thread;
Step 2, Ageing Treatment, be wound on device by silk material, is placed in firing equipment, sets aging temp and temperature retention time;
Step 3, surface treatment.
2. NiTi Dimple correction dental arch filament moulding process according to claim 1, is characterized in that described correction dental arch filament is nitinol and NiTi copper arch wire.
3. according to claim 2, it is characterized in that Nitinol dental arch filament nickel content be 30% ~ 70% all the other for titanium, in NiTi copper arch wire, the content of copper is 3% ~ 10%.
4. NiTi Dimple correction dental arch filament moulding process according to claim 1, it is characterized in that in step one, annealing temperature is 680 DEG C ~ 750 DEG C, hot pull temperature is 620 DEG C ~ 720 DEG C and pass deformation is 10% ~ 15%, and deflection total after cold drawing is 30% ~ 55%.
5. NiTi Dimple correction dental arch filament moulding process according to claim 1, it is characterized in that the aging temp that step 2 is arranged is 500 DEG C ~ 580 DEG C, temperature retention time is 30 ~ 180 minutes.
6. NiTi Dimple correction dental arch filament moulding process according to claim 1, it is characterized in that in step 3, surface treatment comprises pickling and polishing, the proportioning of pickle is HF: HNO
3: H
2o=(1.5 ~ 2.5): (8 ~ 15): (10 ~ 20), what polishing adopted is machine glazed finish, and the rough polishing time is 20 ~ 40 minutes, and the smart throwing time is 1 ~ 3 hour.
7. NiTi Dimple correction dental arch filament shaped device; it is characterized in that described device comprises the force screw (5) of main body correction dental arch filament mould (1), correction dental arch filament intermediate raised portion Forming press (2), die cover plate (4), die cover plate holding screw (6) and Forming press (2), the change of any shape of device and thinking all belongs to scope.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410820692.4A CN104546161A (en) | 2014-12-19 | 2014-12-19 | Process and device for forming NiTi Dimple orthodontic tooth arch wire |
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|---|---|---|---|
| CN201410820692.4A CN104546161A (en) | 2014-12-19 | 2014-12-19 | Process and device for forming NiTi Dimple orthodontic tooth arch wire |
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| CN104546161A true CN104546161A (en) | 2015-04-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568357A (en) * | 2016-01-08 | 2016-05-11 | 江阴法尔胜佩尔新材料科技有限公司 | Nickel-titanium wire obtained through continuous electrochemical polishing |
| CN105618631A (en) * | 2016-01-04 | 2016-06-01 | 哈尔滨理工大学 | Bending device for orthodontic archwire bending robot |
| CN109662790A (en) * | 2018-12-29 | 2019-04-23 | 上海埃蒙迪材料科技股份有限公司 | A kind of preparation method of correction Nitinol dental arch filament |
| CN110252843A (en) * | 2019-07-09 | 2019-09-20 | 中国航发北京航空材料研究院 | A kind of preparation method of the A100 super-high strength steel silk material for increasing material manufacturing |
| CN111346942A (en) * | 2020-03-12 | 2020-06-30 | 西安华创新材料有限公司 | Method for processing nickel-titanium shape memory alloy high-strength wire |
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| US5044947A (en) * | 1990-06-29 | 1991-09-03 | Ormco Corporation | Orthodontic archwire and method of moving teeth |
| CN1111607C (en) * | 2000-08-30 | 2003-06-18 | 郑玉峰 | Thermally activated Ti-Ni wire for correcting shape of tooth and its preparing process |
| CN2683060Y (en) * | 2004-03-25 | 2005-03-09 | 龙小平 | Dental arch thread |
| CN101617960A (en) * | 2008-06-30 | 2010-01-06 | 北京圣玛特科技有限公司 | Compound orthopedic wire and method for preparing same |
| CN102189140A (en) * | 2011-04-25 | 2011-09-21 | 湖北长天通信科技有限公司 | Pressure mold box for cold drawing of high-carbon steel wire |
| WO2011141553A2 (en) * | 2010-05-12 | 2011-11-17 | Minitubes Sa | High ductility superelastic material |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5044947A (en) * | 1990-06-29 | 1991-09-03 | Ormco Corporation | Orthodontic archwire and method of moving teeth |
| CN1111607C (en) * | 2000-08-30 | 2003-06-18 | 郑玉峰 | Thermally activated Ti-Ni wire for correcting shape of tooth and its preparing process |
| CN2683060Y (en) * | 2004-03-25 | 2005-03-09 | 龙小平 | Dental arch thread |
| CN101617960A (en) * | 2008-06-30 | 2010-01-06 | 北京圣玛特科技有限公司 | Compound orthopedic wire and method for preparing same |
| WO2011141553A2 (en) * | 2010-05-12 | 2011-11-17 | Minitubes Sa | High ductility superelastic material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618631A (en) * | 2016-01-04 | 2016-06-01 | 哈尔滨理工大学 | Bending device for orthodontic archwire bending robot |
| CN105568357A (en) * | 2016-01-08 | 2016-05-11 | 江阴法尔胜佩尔新材料科技有限公司 | Nickel-titanium wire obtained through continuous electrochemical polishing |
| CN109662790A (en) * | 2018-12-29 | 2019-04-23 | 上海埃蒙迪材料科技股份有限公司 | A kind of preparation method of correction Nitinol dental arch filament |
| CN110252843A (en) * | 2019-07-09 | 2019-09-20 | 中国航发北京航空材料研究院 | A kind of preparation method of the A100 super-high strength steel silk material for increasing material manufacturing |
| CN111346942A (en) * | 2020-03-12 | 2020-06-30 | 西安华创新材料有限公司 | Method for processing nickel-titanium shape memory alloy high-strength wire |
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Application publication date: 20150429 |