CN104972128A - Production method of orthodontic forceps - Google Patents
Production method of orthodontic forceps Download PDFInfo
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- CN104972128A CN104972128A CN201410139715.5A CN201410139715A CN104972128A CN 104972128 A CN104972128 A CN 104972128A CN 201410139715 A CN201410139715 A CN 201410139715A CN 104972128 A CN104972128 A CN 104972128A
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- injection
- degreasing
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- mouth cavity
- sintering
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Abstract
The invention relates to medical instruments, in particular to a production method of orthodontic forceps. According to the scheme, the production method of the orthodontic forceps includes the following steps that 1, stainless steel powder and an organic polymer material are mixed and granulation is carried out; 2, the mixture obtained through granulation is subjected to injection moulding in a forming die, so that an orthodontic forceps blank is obtained through injection, wherein the injection temperature ranges from 100 DEG C to 180 DEG C, the pressure ranges from 60 MPa to 120 MPa, the die temperature ranges from 30 DEG C to 50 DEG C; 3, the blank is degreased after injection at the temperature of 30-50 DEG C for 2-20 hours, so that a degreased element is obtained; 4, the product is sintered after degreasing at the temperature of 800-1500 DEG C under the condition that the sintering vacuum degree ranges from 0.1 MPa to 0.0001Pa, and inert gas is used for creating a sintering protective atmosphere; and the sintered element is machined through a correction machine, and the orthodontic forceps are obtained. The method is suitable for large-scale production, product consistency is high and reproducibility is good. Meanwhile, the produced forceps further have the advantages of being high in strength and high in corrosion resistance.
Description
Technical field
The present invention relates to medicine equipment, be specifically related to a kind of production method of mouth cavity orthodontic pliers.
Background technology
Mouth cavity orthodontic pliers is an important tool of oral cavity medical apparatus, but parts small volume, and complex structure, so require higher to the making degree that becomes more meticulous.Existing mouth cavity orthodontic pliers adopts forging method and mechanical processing method to produce usually, makes manufacturing procedure loaded down with trivial details, complex process, cannot large-scale production, and metal material utilization rate is low, and properties of product are general, and poor corrosion resistance, product is low for service life.
Summary of the invention
The object of the invention is the above-mentioned shortcoming in order to solve prior art, a kind of production method of new mouth cavity orthodontic pliers is provided.
The solution of the present invention is, a kind of production method of mouth cavity orthodontic pliers, comprises the following steps:
(1) powder of stainless steel is mixed with high-molecular organic material, granulation;
(2) in mould, carry out injection moulding to the mixture after granulation, injection temperature 100 ~ 180 DEG C, pressure 60 ~ 120MPa, mould temperature 30 ~ 50 DEG C, injection obtains mouth cavity orthodontic pliers blank;
(3) degreasing is carried out to blank, skimming temp 30 ~ 50 DEG C after injection, 2 ~ 20 hours time, obtain degreasing part;
(4) sinter product after degreasing, sintering temperature 800 ~ 1500 DEG C, sintering vacuum is 0.1MPa ~ 0.0001Pa, and adopts inert gas to be sintering protective atmosphere; Sintered part carries out inspection machine processing, obtains mouth cavity orthodontic pliers product.
Preferably, during step (2) injection moulding, injection temperature 150 ~ 155 DEG C.
Another preferred version is, during step (2) injection moulding, pressure is 105 ~ 110MPa.
Another preferred version is, during step (2) injection moulding, mould temperature is 40 DEG C.
Another preferred version is, when step (3) carries out degreasing to blank, skimming temp is 40 DEG C.
Another preferred version is, when step (3) carries out degreasing to blank, degreasing time is 7 ~ 9 hours.
Another preferred version is, when product being sintered after step (4) degreasing, and sintering temperature 1000 ~ 1300 DEG C, sintering time 1 ~ 3 hour.
Described step (1) high-molecular organic material is intended for bonding agent, common bonding agent can be selected, consumption can add as required, after shaping with powder of stainless steel hybrid injection, in degreasing thereafter and sintering process, these high-molecular organic materials can all be deviate from, and leave last effective metal ingredient.
Method of the present invention is applicable to producing high-performance mouth cavity orthodontic pliers in enormous quantities, and homogeneity of product is high, favorable reproducibility, and the correction pliers simultaneously produced also has the advantage of high strength and high-corrosion resistance.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated, and protection scope of the present invention is not limited in these embodiments.
Embodiment 1 obtains the production method of mouth cavity orthodontic pliers
Adopt stainless steel powder (17-4PH) and high-molecular organic material to carry out feedstock preparation, prepare the mould of required form, then carry out metal injection molded in mould, injection temperature 100 ~ 180 DEG C, pressure 60 ~ 120MPa, mould temperature 40 DEG C, injection obtains injection blank; After injection, degreasing is carried out to blank, skimming temp 40 DEG C, 2 ~ 20 hours time, obtain degreasing part; After degreasing, product is sintered, sintering temperature 800 ~ 1500 DEG C.Sintered part is corrected, machined, obtain mouth cavity orthodontic pliers product.
The production method of embodiment 2 one kinds of mouth cavity orthodontic pliers
(1) powder of stainless steel is mixed with high-molecular organic material, granulation;
(2) in mould, carry out injection moulding to the mixture after granulation, injection temperature 100 DEG C, pressure 60MPa, mould temperature 30 DEG C, injection obtains mouth cavity orthodontic pliers blank;
(3) degreasing is carried out to blank, skimming temp 30 DEG C after injection, 20 hours time, obtain degreasing part;
(4) carry out vacuum-sintering to product after degreasing, sintering temperature 800 DEG C, sintering vacuum is 0.1MPa ~ 0.0001Pa, and adopts inert gas to be sintering protective atmosphere; Sintered part carries out inspection machine processing, obtains mouth cavity orthodontic pliers product.After tested, product Rockwell hardness is HRC 63.
The production method of embodiment 3 one kinds of mouth cavity orthodontic pliers
(1) powder of stainless steel is mixed with high-molecular organic material, granulation;
(2) in mould, carry out injection moulding to the mixture after granulation, injection temperature 150 DEG C, pressure 105MPa, mould temperature 50 DEG C, injection obtains mouth cavity orthodontic pliers blank;
(3) carry out degreasing to blank, skimming temp 50 DEG C after injection, time 2 h, obtains degreasing part;
(4) carry out vacuum-sintering to product after degreasing, sintering temperature 500 DEG C, sintering vacuum is 0.1MPa ~ 0.0001Pa, and adopts inert gas to be sintering protective atmosphere; Sintered part carries out inspection machine processing, obtains mouth cavity orthodontic pliers product.After tested, product Rockwell hardness is HRC 64.
The production method of embodiment 4 one kinds of mouth cavity orthodontic pliers
(1) powder of stainless steel is mixed with high-molecular organic material, granulation;
(2) in mould, carry out injection moulding to the mixture after granulation, injection temperature 155 DEG C, pressure 110MPa, mould temperature 40 DEG C, injection obtains mouth cavity orthodontic pliers blank;
(3) degreasing is carried out to blank, skimming temp 40 DEG C after injection, 10 hours time, obtain degreasing part;
(4) carry out vacuum-sintering to product after degreasing, sintering temperature 1200 DEG C, sintering vacuum is 0.1MPa ~ 0.0001Pa, and adopts inert gas to be sintering protective atmosphere; Sintered part carries out inspection machine processing, obtains mouth cavity orthodontic pliers product.After tested, product Rockwell hardness is HRC 65.
The production method of embodiment 5 one kinds of mouth cavity orthodontic pliers
(1) powder of stainless steel is mixed with high-molecular organic material, granulation;
(2) in mould, carry out injection moulding to the mixture after granulation, injection temperature 180 DEG C, pressure 70MPa, mould temperature 35 DEG C, injection obtains mouth cavity orthodontic pliers blank;
(3) degreasing is carried out to blank, skimming temp 35 DEG C after injection, 9 hours time, obtain degreasing part;
(4) carry out vacuum-sintering to product after degreasing, sintering temperature 1000 DEG C, sintering vacuum is 0.1MPa ~ 0.0001Pa, and adopts inert gas to be sintering protective atmosphere; Sintered part carries out inspection machine processing, obtains mouth cavity orthodontic pliers product.
After tested, products obtained therefrom Rockwell hardness is HRC 65.
The high-molecular organic material of above-described embodiment act as auxiliary bonding agent, bonding agent consumption is 3% ~ 15% of powder of stainless steel gross mass, each metal dust is bonded together better, when degreasing and sintering, these bonding agents at high temperature can all be deviate from, adhesive component is by weight percentage: paraffin 20% ~ 50%, high density polyethylene (HDPE) 25% ~ 45%, EVA resin 10% ~ 35%, then sends into mill at 165 ~ 200 DEG C mixing 2 ~ 3 hours by metal dust and bonding agent; Then inject.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. a production method for mouth cavity orthodontic pliers, is characterized in that, comprises the following steps:
(1) powder of stainless steel is mixed with high-molecular organic material, granulation;
(2) in mould, carry out injection moulding to the mixture after granulation, injection temperature 100 ~ 180 DEG C, pressure 60 ~ 120MPa, mould temperature 30 ~ 50 DEG C, injection obtains mouth cavity orthodontic pliers blank;
(3) degreasing is carried out to blank, skimming temp 30 ~ 50 DEG C after injection, 2 ~ 20 hours time, obtain degreasing part;
(4) carry out vacuum-sintering to product after degreasing, sintering temperature 800 ~ 1500 DEG C, sintering vacuum is 0.1MPa ~ 0.0001Pa, and adopts inert gas to be sintering protective atmosphere; Sintered part carries out inspection machine processing, obtains mouth cavity orthodontic pliers product.
2. the production method of mouth cavity orthodontic pliers according to claim 1, is characterized in that, during step (2) injection moulding, and injection temperature 150 ~ 155 DEG C.
3. the production method of mouth cavity orthodontic pliers according to claim 1, it is characterized in that, during step (2) injection moulding, pressure is 105 ~ 110MPa.
4. the production method of mouth cavity orthodontic pliers according to claim 1, it is characterized in that, during step (2) injection moulding, mould temperature is 40 DEG C.
5. the production method of mouth cavity orthodontic pliers according to claim 1, it is characterized in that, when step (3) carries out degreasing to blank, skimming temp is 40 DEG C.
6. the production method of mouth cavity orthodontic pliers according to claim 1, it is characterized in that, when step (3) carries out degreasing to blank, degreasing time is 7 ~ 9 hours.
7. the production method of mouth cavity orthodontic pliers according to claim 1, is characterized in that, when product being sintered after step (4) degreasing, and sintering temperature 1000 ~ 1300 DEG C, sintering time 1 ~ 3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410139715.5A CN104972128A (en) | 2014-04-04 | 2014-04-04 | Production method of orthodontic forceps |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410139715.5A CN104972128A (en) | 2014-04-04 | 2014-04-04 | Production method of orthodontic forceps |
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| CN104972128A true CN104972128A (en) | 2015-10-14 |
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| CN201410139715.5A Pending CN104972128A (en) | 2014-04-04 | 2014-04-04 | Production method of orthodontic forceps |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215870A (en) * | 2015-10-21 | 2016-01-06 | 和弘手术器械（上海）有限公司 | A kind of edge joins formula medical calm |
| CN108213439A (en) * | 2017-05-26 | 2018-06-29 | 浙江火科技股份有限公司 | A kind of method using powder injection forming production tooth orthodontics self-locking bracket |
| CN113500357A (en) * | 2021-07-20 | 2021-10-15 | 浙江新亚医疗科技股份有限公司 | Tooth orthodontic bending forceps and preparation method thereof |
| CN113995533A (en) * | 2021-10-22 | 2022-02-01 | 杭州德泰克医疗器材有限公司 | Orthodontic pliers and pliers body forming method thereof |
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| CN1283536A (en) * | 2000-09-13 | 2001-02-14 | 湖南英捷高科技有限责任公司 | Technology for machining small shaped medical tools of stainless steel |
| CN1289073A (en) * | 2000-09-13 | 2001-03-28 | 湖南英捷高科技有限责任公司 | Manufacture of chronometer parts |
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| CN102228990A (en) * | 2011-06-17 | 2011-11-02 | 湖南英捷高科技有限责任公司 | One-step molding process for optical communication assembly seat |
| CN102328075A (en) * | 2011-07-22 | 2012-01-25 | 浙江一火科技有限公司 | Stainless steel rehabilitation medical instrument and manufacture method thereof |
| CN102335745A (en) * | 2011-10-26 | 2012-02-01 | 湖南瀚德微创医疗科技有限公司 | Method for preparing disposable minimally invasive surgical scissor blades |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1283536A (en) * | 2000-09-13 | 2001-02-14 | 湖南英捷高科技有限责任公司 | Technology for machining small shaped medical tools of stainless steel |
| CN1289073A (en) * | 2000-09-13 | 2001-03-28 | 湖南英捷高科技有限责任公司 | Manufacture of chronometer parts |
| CN101288907A (en) * | 2007-04-19 | 2008-10-22 | 湖南英捷高科技有限责任公司 | Processing method of endoscope living body forceps head |
| CN101445881A (en) * | 2007-11-26 | 2009-06-03 | 比亚迪股份有限公司 | Preparation method of cermet material |
| CN101804457A (en) * | 2009-12-16 | 2010-08-18 | 湖南英捷高科技有限责任公司 | Method for preparing head of endoscope biopsy forceps used for minimally invasive surgery |
| CN102228990A (en) * | 2011-06-17 | 2011-11-02 | 湖南英捷高科技有限责任公司 | One-step molding process for optical communication assembly seat |
| CN102328075A (en) * | 2011-07-22 | 2012-01-25 | 浙江一火科技有限公司 | Stainless steel rehabilitation medical instrument and manufacture method thereof |
| CN102335745A (en) * | 2011-10-26 | 2012-02-01 | 湖南瀚德微创医疗科技有限公司 | Method for preparing disposable minimally invasive surgical scissor blades |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215870A (en) * | 2015-10-21 | 2016-01-06 | 和弘手术器械（上海）有限公司 | A kind of edge joins formula medical calm |
| CN108213439A (en) * | 2017-05-26 | 2018-06-29 | 浙江火科技股份有限公司 | A kind of method using powder injection forming production tooth orthodontics self-locking bracket |
| CN113500357A (en) * | 2021-07-20 | 2021-10-15 | 浙江新亚医疗科技股份有限公司 | Tooth orthodontic bending forceps and preparation method thereof |
| CN113995533A (en) * | 2021-10-22 | 2022-02-01 | 杭州德泰克医疗器材有限公司 | Orthodontic pliers and pliers body forming method thereof |
| CN113995533B (en) * | 2021-10-22 | 2023-11-03 | 杭州德泰克医疗器材有限公司 | Orthodontic pliers and forming method of pliers body thereof |
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Address after: 321001 Zhejiang Province, Jinhua city Wucheng District Youth Industrial Zone Applicant after: Zhejiang fire Polytron Technologies Inc Address before: 321001 Zhejiang Province, Jinhua city Wucheng District Youth Industrial Zone Applicant before: Zhejiang Yihuo Technology Co., Ltd. |
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Application publication date: 20151014 |
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