CN105234417A - Manufacturing method for thin-wall medical parts - Google Patents

Manufacturing method for thin-wall medical parts Download PDF

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Publication number
CN105234417A
CN105234417A CN201410299468.5A CN201410299468A CN105234417A CN 105234417 A CN105234417 A CN 105234417A CN 201410299468 A CN201410299468 A CN 201410299468A CN 105234417 A CN105234417 A CN 105234417A
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China
Prior art keywords
degreasing
temperature
binding agent
minutes
added
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410299468.5A
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Chinese (zh)
Inventor
王文昊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Yijiate Technology Development Co Ltd
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Nanjing Yijiate Technology Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Nanjing Yijiate Technology Development Co Ltd filed Critical Nanjing Yijiate Technology Development Co Ltd
Priority to CN201410299468.5A priority Critical patent/CN105234417A/en
Publication of CN105234417A publication Critical patent/CN105234417A/en
Pending legal-status Critical Current

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Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a manufacturing method for thin-wall medical parts through a powder injection forming technology. Compared with the prior art, the thin-wall parts produced by the adoption of the powder injection forming technology have the characteristics that products in complex shapes are formed at a time, the product dimensional precision is high, no mechanical processing or only minimal processing is required, production automation is likely to be realized, and the product performance is excellent. The processing efficiency is high, the processing cost is also greatly reduced, and customer needs can be well met.

Description

A kind of preparation method of medical thin-walled parts
Technical field
The invention belongs to medicine equipment preparation field, relate to a kind of preparation method of thin-walled parts, especially relate to a kind of medical thin-walled parts.
Background technology
Thin-walled parts, because having lightweight, feature such as saving material, compact conformation etc., has been widely used in each industrial machine and parts.It is adopt the method manufacture of machining that traditional method prepares such or of this sort medical thin-walled parts, but due to operation various, working (machining) efficiency is low, and yield rate is low, and the cost of processing is high, is thus badly in need of seeking a kind of new processing method and substitutes.
Summary of the invention
The present invention, in order to solve the deficiencies in the prior art, adopts powder injection-molded technology, and this technology is a novel newly net forming technology, solves the shortcoming of above-mentioned machining.
The present invention for solving the problems of the technologies described above adopted technical scheme is: the preparation method of a kind of preparation method of medical thin-walled parts, is characterized in that comprising the following steps:
1) prepare binding agent: described binding agent is made up of silica gel, Merlon, methyl acrylate, wherein the percentage by weight of each component is: silica gel 70 ~ 75%, Merlon 8 ~ 10%, methyl acrylate 15 ~ 20%; First by 8 ~ 10% Merlon, 15 ~ 20% methyl acrylates add kneader, are warming up to 200 ~ 220 DEG C, mixing 10 ~ 15 minutes; Reduce melting temperature to 180 ~ 190 DEG C, then 70 ~ 75% silica gel are added kneader, mixing 10 ~ 15 minutes, obtained binding agent;
2) feeding is prepared: first the binding agent of percentage by weight 10 ~ 15% and the metal dust of 85 ~ 90% are added three-dimensional rotation device, obtain the mixture of uniform powder and binding agent; Then the mixture of above-mentioned uniform powder and binding agent is added kneader, be warming up to 200 ~ 220 DEG C, mixing 10 ~ 15 minutes; Reduce melting temperature to 180 ~ 190 DEG C, mixing 10 ~ 15 minutes, obtained feeding;
3) injection moulding: the aforementioned feeding prepared is added injector and injects, according to the feature of product, product injection parameters is adjusted, its suitable parameter area is as follows: injection temperature 170 ± 10 DEG C, injection pressure: 60 ~ 80bar, injection speed: 60 ~ 80 mm/second, inject time: 1 ~ 1.5 second, cool time: 5 ~ 7 seconds, dynamic model temperature: 20 ~ 25 DEG C, cover half temperature: 10 ~ 12 DEG C;
4) degreasing: first degreasing adopts solvent degreasing, then carries out two step degreasing methods of thermal debinding;
Solvent degreasing: first the ethanol of 95% is added solvent degreasing groove and carry out being heated to 50 ~ 60 DEG C, then carries out degreasing in 2 ~ 3 hours in a solvent by the blank injected bubble, after blank taken out be placed in drying box dry 30 minutes;
Thermal debinding: the blank that solvent degreasing is good is placed in vacuum degreasing stove and carries out thermal debinding, thermal debinding adopts temperature-gradient method program, ensure that the remaining binders after solvent degreasing can remove smoothly thoroughly, adopt respectively and insulation platform is set the fast decoupled temperature 350 DEG C of methyl acrylate and Merlon and 550 DEG C, then more than 850 DEG C, carry out presintering;
5) sinter: adopt vacuum sintering furnace to sinter, control sintering temperature at 1310 ~ 1370 DEG C, control sintering vacuum at 150 ~ 200Pa, control sintering time at 80-100 minute.
Advantage of the present invention is: have once-forming complicated shape goods, product size precision high, without the need to machining or only need trace processing, be easy to realize the feature of the production automation and excellent product performance, working (machining) efficiency is high, processing cost also reduces greatly, is well positioned to meet the demand of client.
Detailed description of the invention
Embodiment:
Plant the preparation method of the preparation method of medical thin-walled parts, it is characterized in that comprising the following steps:
1) prepare binding agent: described binding agent is made up of silica gel, Merlon, methyl acrylate, wherein the percentage by weight of each component is: silica gel 70 ~ 75%, Merlon 8 ~ 10%, methyl acrylate 15 ~ 20%; First by 8 ~ 10% Merlon, 15 ~ 20% methyl acrylates add kneader, are warming up to 200 ~ 220 DEG C, mixing 10 ~ 15 minutes; Reduce melting temperature to 180 ~ 190 DEG C, then 70 ~ 75% silica gel are added kneader, mixing 10 ~ 15 minutes, obtained binding agent;
2) feeding is prepared: first the binding agent of percentage by weight 10 ~ 15% and the metal dust of 85 ~ 90% are added three-dimensional rotation device, obtain the mixture of uniform powder and binding agent; Then the mixture of above-mentioned uniform powder and binding agent is added kneader, be warming up to 200 ~ 220 DEG C, mixing 10 ~ 15 minutes; Reduce melting temperature to 180 ~ 190 DEG C, mixing 10 ~ 15 minutes, obtained feeding;
3) injection moulding: the aforementioned feeding prepared is added injector and injects, according to the feature of product, product injection parameters is adjusted, its suitable parameter area is as follows: injection temperature 170 ± 10 DEG C, injection pressure: 60 ~ 80bar, injection speed: 60 ~ 80 mm/second, inject time: 1 ~ 1.5 second, cool time: 5 ~ 7 seconds, dynamic model temperature: 20 ~ 25 DEG C, cover half temperature: 10 ~ 12 DEG C;
4) degreasing: first degreasing adopts solvent degreasing, then carries out two step degreasing methods of thermal debinding;
Solvent degreasing: first the ethanol of 95% is added solvent degreasing groove and carry out being heated to 50 ~ 60 DEG C, then carries out degreasing in 2 ~ 3 hours in a solvent by the blank injected bubble, after blank taken out be placed in drying box dry 30 minutes;
Thermal debinding: the blank that solvent degreasing is good is placed in vacuum degreasing stove and carries out thermal debinding, thermal debinding adopts temperature-gradient method program, ensure that the remaining binders after solvent degreasing can remove smoothly thoroughly, adopt respectively and insulation platform is set the fast decoupled temperature 350 DEG C of methyl acrylate and Merlon and 550 DEG C, then more than 850 DEG C, carry out presintering;
5) sinter: adopt vacuum sintering furnace to sinter, control sintering temperature at 1310 ~ 1370 DEG C, control sintering vacuum at 150 ~ 200Pa, control sintering time at 80-100 minute.

Claims (1)

1. the preparation method's of a medical thin-walled parts preparation method, is characterized in that comprising the following steps:
1) prepare binding agent: described binding agent is made up of silica gel, Merlon, methyl acrylate, wherein the percentage by weight of each component is: silica gel 70 ~ 75%, Merlon 8 ~ 10%, methyl acrylate 15 ~ 20%; First by 8 ~ 10% Merlon, 15 ~ 20% methyl acrylates add kneader, are warming up to 200 ~ 220 DEG C, mixing 10 ~ 15 minutes; Reduce melting temperature to 180 ~ 190 DEG C, then 70 ~ 75% silica gel are added kneader, mixing 10 ~ 15 minutes, obtained binding agent;
2) feeding is prepared: first the binding agent of percentage by weight 10 ~ 15% and the metal dust of 85 ~ 90% are added three-dimensional rotation device, obtain the mixture of uniform powder and binding agent; Then the mixture of above-mentioned uniform powder and binding agent is added kneader, be warming up to 200 ~ 220 DEG C, mixing 10 ~ 15 minutes; Reduce melting temperature to 180 ~ 190 DEG C, mixing 10 ~ 15 minutes, obtained feeding;
3) injection moulding: the aforementioned feeding prepared is added injector and injects, according to the feature of product, product injection parameters is adjusted, its suitable parameter area is as follows: injection temperature 170 ± 10 DEG C, injection pressure: 60 ~ 80bar, injection speed: 60 ~ 80 mm/second, inject time: 1 ~ 1.5 second, cool time: 5 ~ 7 seconds, dynamic model temperature: 20 ~ 25 DEG C, cover half temperature: 10 ~ 12 DEG C;
4) degreasing: first degreasing adopts solvent degreasing, then carries out two step degreasing methods of thermal debinding;
Solvent degreasing: first the ethanol of 95% is added solvent degreasing groove and carry out being heated to 50 ~ 60 DEG C, then carries out degreasing in 2 ~ 3 hours in a solvent by the blank injected bubble, after blank taken out be placed in drying box dry 30 minutes;
Thermal debinding: the blank that solvent degreasing is good is placed in vacuum degreasing stove and carries out thermal debinding, thermal debinding adopts temperature-gradient method program, ensure that the remaining binders after solvent degreasing can remove smoothly thoroughly, adopt respectively and insulation platform is set the fast decoupled temperature 350 DEG C of methyl acrylate and Merlon and 550 DEG C, then more than 850 DEG C, carry out presintering;
5) sinter: adopt vacuum sintering furnace to sinter, control sintering temperature at 1310 ~ 1370 DEG C, control sintering vacuum at 150 ~ 200Pa, control sintering time at 80-100 minute.
CN201410299468.5A 2014-06-27 2014-06-27 Manufacturing method for thin-wall medical parts Pending CN105234417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410299468.5A CN105234417A (en) 2014-06-27 2014-06-27 Manufacturing method for thin-wall medical parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410299468.5A CN105234417A (en) 2014-06-27 2014-06-27 Manufacturing method for thin-wall medical parts

Publications (1)

Publication Number Publication Date
CN105234417A true CN105234417A (en) 2016-01-13

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Application Number Title Priority Date Filing Date
CN201410299468.5A Pending CN105234417A (en) 2014-06-27 2014-06-27 Manufacturing method for thin-wall medical parts

Country Status (1)

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CN (1) CN105234417A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111136275A (en) * 2020-01-20 2020-05-12 江苏精研科技股份有限公司 Method for preparing large-area thin-wall part by injection molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111136275A (en) * 2020-01-20 2020-05-12 江苏精研科技股份有限公司 Method for preparing large-area thin-wall part by injection molding

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