CN107377978A - A kind of slurry 3D printing technique - Google Patents

A kind of slurry 3D printing technique Download PDF

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Publication number
CN107377978A
CN107377978A CN201710646904.5A CN201710646904A CN107377978A CN 107377978 A CN107377978 A CN 107377978A CN 201710646904 A CN201710646904 A CN 201710646904A CN 107377978 A CN107377978 A CN 107377978A
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CN
China
Prior art keywords
slurry
printing
printed
printing technique
sinter
Prior art date
Application number
CN201710646904.5A
Other languages
Chinese (zh)
Inventor
徐忠
张学兵
Original Assignee
安徽原动力生产力促进中心有限公司
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.)
Filing date
Publication date
Application filed by 安徽原动力生产力促进中心有限公司 filed Critical 安徽原动力生产力促进中心有限公司
Priority to CN201710646904.5A priority Critical patent/CN107377978A/en
Publication of CN107377978A publication Critical patent/CN107377978A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00Processes of additive manufacturing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F2998/00Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10Processes characterised by the sequence of their steps

Abstract

The invention discloses a kind of slurry 3D printing technique, copper powder is screened by sieve, when reducing printing the problem of easy plug, dewaxing treatment is carried out after printing, burning can be reduced and lose ratio and shrinkage ratio, printing shaping is carried out to copper slurry, degreasing is carried out to shaping blank using thermal debinding method, by controlling different sintering temperatures and soaking time, printing shaping with copper slurry is best in quality, surface is smooth, there is no the defects of breach and projection, the advantages that powder loading maximum, the slurry 3D printing technique has the advantages of forming dimension is easily controlled, wide market.

Description

A kind of slurry 3D printing technique

Technical field

The present invention relates to 3D printing field, more particularly to a kind of slurry 3D printing technique.

Background technology

Three-dimensional (3D) printing technique is described as the core technology of third time Industrial Revolution and industry 4.0, by developed country It is widely used in medical medical science, building manufacture, numerous industries such as industrial mould, but the technical bottlenecks such as printed material is rare is present. At present, the research of metal parts 3D printing technique, foreign countries start to walk relatively early in this respect, as there have been business in the companies such as Reinshaw The equipment of change is released, relatively domestic to have leading status.Research for the country, now also in foundation phase, Commercial popularization is also based on the equipment of foreign countries.

CN201710036077.8 discloses a kind of zirconium oxide enhancing 3D printing ceramic slurry and preparation method thereof, utilizes light Ceramic slurry curing is molded by solidification 3D printer, obtains that hardness is high, toughness is stronger, high-precision ceramic component after sintered, Saved time and cost with this, but the problem of there is being not easily controlled to forming dimension.

The content of the invention

The technical problems to be solved by the invention are to provide a kind of slurry 3D printing technique, to solve to cause in the prior art Above-mentioned multinomial defect.

To achieve the above object, the present invention provides following technical scheme:A kind of slurry 3D printing technique, including following step Suddenly:

(1) weigh

It is first according to mass ratio 100:7-100:9 weigh copper powder and paraffin;

(2) system material

Open printing machine is preheated, and then is put into be added in charging basket by load weighted paraffin and is melted, is then poured into Copper powder is stirred 5-15min, then carries out vibration processing 5-10min to charging basket, produces copper slurry, be then installed to charging basket On printer;

(3) print

Software connection printer is opened, the stl file of correlation is imported, sets print parameters, produces G code, it is most laggard Row printing shaping, obtain the blank of sample;

(4) sinter

Then the blank of sample is put into electrical kiln, the sintering parameter for setting electrical kiln is sintered, the sintering Temperature is 900-1100 DEG C, is consequently cooled to room temperature, takes out sinter;

(5) sanding and polishing

First the bossing of sinter is polished by the grinding head of sander, then selects 80-400 dry abrasive papers Polish again refinisher, operation finally is polished to sinter with polishing agent and polishing wheel, obtains printed product;

(6) performance test

Then printed product progressive can be determined, qualified printed product is carried out into packaging dispatches from the factory, it is underproof enter traveling one Walk optimization processing.

Preferably, copper powder is screened by sieve first in the step (1).

Preferably, the mesh number of the sieve is 200-300 mesh.

Preferably, it is 550-950 that 3D printer parameter, which is arranged to gear ratio, in the step (3), and the floor height is 0.55-0.75mm, the print speed are 10-30mm/s.

Preferably, dewaxing treatment is carried out after being printed in the step (3).

Preferably, the ungrease treatment is that printed product is put into degreasing room, carries out being warming up to 200 DEG C with 2 DEG C/min, 1-3h is incubated, then 0.5 DEG C/min carries out being warming up to 300 DEG C, is incubated 20-30min, is then reduced to room temperature.

Beneficial effect using above technical scheme is:A kind of slurry 3D printing technique provided by the invention, passes through sieve Copper powder is screened, when reducing printing the problem of easy plug, dewaxing treatment is carried out after printing, it is possible to reduce burns and loses ratio And shrinkage ratio, printing shaping is carried out to copper slurry, degreasing is carried out to shaping blank using thermal debinding method, by controlling different burnings Junction temperature and soaking time, there is the defects of printing shaping of copper slurry is best in quality, and surface is smooth, without breach and projection, The advantages that powder loading maximum, the slurry 3D printing technique have the advantages of forming dimension is easily controlled, wide market.

Embodiment

The following detailed description of the preferred embodiment of the present invention.

Embodiment 1:

A kind of slurry 3D printing technique, comprises the following steps:

(1) weigh

Copper powder is screened by sieve first, the mesh number of the sieve is 200 mesh, then according to mass ratio 100:7 Weigh copper powder and paraffin;

(2) system material

Open printing machine is preheated, and then is put into be added in charging basket by load weighted paraffin and is melted, is then poured into Copper powder is stirred 5min, then carries out vibration processing 5min to charging basket, produces copper slurry, charging basket then is installed into printer On;

(3) print

Software connection printer is opened, the stl file of correlation is imported, sets print parameters, produces G code, it is most laggard Row printing shaping, the blank of sample is obtained, it is 550 that the 3D printer parameter, which is arranged to gear ratio, and the floor height is 0.55mm, the print speed are 10mm/s, and dewaxing treatment is carried out after printing, and the ungrease treatment is de- for printed product is put into In fat room, carry out being warming up to 200 DEG C with 2 DEG C/min, be incubated 1h, then 0.5 DEG C/min carries out being warming up to 300 DEG C, insulation 20min, then it is reduced to room temperature;

(4) sinter

Then the blank of sample is put into electrical kiln, the sintering parameter for setting electrical kiln is sintered, the sintering Temperature is 900 DEG C, is consequently cooled to room temperature, takes out sinter;

(5) sanding and polishing

First the bossing of sinter is polished by the grinding head of sander, then selects No. 80 dry abrasive papers again Polishing refinisher, is finally polished operation to sinter with polishing agent and polishing wheel, obtains printed product;

(6) performance test

Then printed product progressive can be determined, qualified printed product is carried out into packaging dispatches from the factory, it is underproof enter traveling one Walk optimization processing.

Embodiment 2:

A kind of slurry 3D printing technique, comprises the following steps:

(1) weigh

Copper powder is screened by sieve first, the mesh number of the sieve is 250 mesh, then according to mass ratio 100:8 Weigh copper powder and paraffin;

(2) system material

Open printing machine is preheated, and then is put into be added in charging basket by load weighted paraffin and is melted, is then poured into Copper powder is stirred 10min, then carries out vibration processing 8min to charging basket, produces copper slurry, charging basket then is installed into printing On machine;

(3) print

Software connection printer is opened, the stl file of correlation is imported, sets print parameters, produces G code, it is most laggard Row printing shaping, the blank of sample is obtained, it is 750 that the 3D printer parameter, which is arranged to gear ratio, and the floor height is 0.65mm, the print speed are 20mm/s, and dewaxing treatment is carried out after printing, and the ungrease treatment is de- for printed product is put into In fat room, carry out being warming up to 200 DEG C with 2 DEG C/min, be incubated 2h, then 0.5 DEG C/min carries out being warming up to 300 DEG C, insulation 25min, then it is reduced to room temperature;

(4) sinter

Then the blank of sample is put into electrical kiln, the sintering parameter for setting electrical kiln is sintered, the sintering Temperature is 1000 DEG C, is consequently cooled to room temperature, takes out sinter;

(5) sanding and polishing

First the bossing of sinter is polished by the grinding head of sander, then selects 80-400 dry abrasive papers Polish again refinisher, operation finally is polished to sinter with polishing agent and polishing wheel, obtains printed product;

(6) performance test

Then printed product progressive can be determined, qualified printed product is carried out into packaging dispatches from the factory, it is underproof enter traveling one Walk optimization processing.

Embodiment 3:

A kind of slurry 3D printing technique, comprises the following steps:

(1) weigh

Copper powder is screened by sieve first, the mesh number of the sieve is 300 mesh, then according to mass ratio 100:9 Weigh copper powder and paraffin;

(2) system material

Open printing machine is preheated, and then is put into be added in charging basket by load weighted paraffin and is melted, is then poured into Copper powder is stirred 15min, then carries out vibration processing 10min to charging basket, produces copper slurry, charging basket then is installed into printing On machine;

(3) print

Software connection printer is opened, the stl file of correlation is imported, sets print parameters, produces G code, it is most laggard Row printing shaping, the blank of sample is obtained, it is 950 that the 3D printer parameter, which is arranged to gear ratio, and the floor height is 0.75mm, the print speed are 10-30mm/s, and dewaxing treatment is carried out after printing, and the ungrease treatment is to be put into printed product Into degreasing room, carry out being warming up to 200 DEG C with 2 DEG C/min, be incubated 3h, then 0.5 DEG C/min carries out being warming up to 300 DEG C, insulation 30min, then it is reduced to room temperature;

(4) sinter

Then the blank of sample is put into electrical kiln, the sintering parameter for setting electrical kiln is sintered, the sintering Temperature is 1100 DEG C, is consequently cooled to room temperature, takes out sinter;

(5) sanding and polishing

First the bossing of sinter is polished by the grinding head of sander, then selects No. 400 dry abrasive papers again Secondary polishing refinisher, is finally polished operation to sinter with polishing agent and polishing wheel, obtains printed product;

(6) performance test

Then printed product progressive can be determined, qualified printed product is carried out into packaging dispatches from the factory, it is underproof enter traveling one Walk optimization processing.

After above method, sample is taken out respectively, and measurement result is as follows:

Detection project Embodiment 1 Embodiment 2 Embodiment 3 Existing index Forming dimension It is easily-controllable It is easily-controllable It is easily-controllable It is more easily-controllable Shrinkage ratio (%) 32 31 35 39 Burn and lose than (%) 5.62 5.1 5.73 6.9

It can be drawn according to above table data, when the parameter of embodiment 2, the printed product after 3D printing compares prior art Printed product forming dimension after 3D printing is easily-controllable, and shrinkage ratio and burning are lost than reducing, and are now more beneficial for the 3D printing of printed product.

The invention provides a kind of slurry 3D printing technique, and copper powder is screened by sieve, when reducing printing The problem of easy plug, dewaxing treatment is carried out after printing, it is possible to reduce burn and lose ratio and shrinkage ratio, copper slurry is printed as Type, degreasing is carried out to shaping blank using thermal debinding method, by controlling different sintering temperatures and soaking time, there is copper slurry Printing shaping it is best in quality, surface is smooth, the defects of without breach and projection, the advantages that powder loading maximum, the slurry 3D printing technique has the advantages of forming dimension is easily controlled, wide market.

Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention Protection domain.

Claims (6)

1. a kind of slurry 3D printing technique, it is characterised in that comprise the following steps:
(1) weigh
It is first according to mass ratio 100:7-100:9 weigh copper powder and paraffin;
(2) system material
Open printing machine is preheated, and then is put into be added in charging basket by load weighted paraffin and is melted, then pours into copper powder 5-15min is stirred, vibration processing 5-10min then is carried out to charging basket, copper slurry is produced, charging basket is then installed to printing On machine;
(3) print
Software connection printer is opened, the stl file of correlation is imported, sets print parameters, produce G code, finally beaten Type is printed as, obtains the blank of sample;
(4) sinter
Then the blank of sample is put into electrical kiln, the sintering parameter for setting electrical kiln is sintered, the temperature of the sintering For 900-1100 DEG C, room temperature is consequently cooled to, takes out sinter;
(5) sanding and polishing
First the bossing of sinter is polished by the grinding head of sander, then selects 80-400 dry abrasive papers again Polishing refinisher, is finally polished operation to sinter with polishing agent and polishing wheel, obtains printed product;
(6) performance test
Then printed product progressive can be determined, qualified printed product is carried out into packaging dispatches from the factory, and underproof progress is further excellent Change is handled.
2. a kind of slurry 3D printing technique according to claim 1, it is characterised in that pass through first in the step (1) Sieve screens to copper powder.
3. a kind of slurry 3D printing technique according to claim 2, it is characterised in that the mesh number of the sieve is 200- 300 mesh.
A kind of 4. slurry 3D printing technique according to claim 1, it is characterised in that 3D printer in the step (3) It is 550-950 that parameter, which is arranged to gear ratio, and the floor height is 0.55-0.75mm, and the print speed is 10-30mm/s.
5. a kind of slurry 3D printing technique according to claim 1, it is characterised in that printing is laggard in the step (3) Row dewaxing treatment.
6. a kind of slurry 3D printing technique according to claim 5, it is characterised in that the ungrease treatment is by printed product It is put into degreasing room, carries out being warming up to 200 DEG C with 2 DEG C/min, be incubated 1-3h, then 0.5 DEG C/min carries out being warming up to 300 DEG C, 20-30min is incubated, is then reduced to room temperature.
CN201710646904.5A 2017-08-01 2017-08-01 A kind of slurry 3D printing technique CN107377978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710646904.5A CN107377978A (en) 2017-08-01 2017-08-01 A kind of slurry 3D printing technique

Publications (1)

Publication Number Publication Date
CN107377978A true CN107377978A (en) 2017-11-24

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150069649A1 (en) * 2007-04-04 2015-03-12 The Exone Company Powder Particle Layerwise Three-Dimensional Printing Process
CN105499570A (en) * 2015-12-25 2016-04-20 吉林大学 3D printing method of metal ceramic functional gradient part in alternating magnetic field
CN105584045A (en) * 2015-12-25 2016-05-18 吉林大学 Multi-material part 3D printing device and printing method thereof
CN106270512A (en) * 2016-09-01 2017-01-04 中国地质大学(武汉) 3D prints support slurry, metal paste and the Method of printing of metal labyrinth
CN106334793A (en) * 2016-11-08 2017-01-18 西安铂力特激光成形技术有限公司 Method for Producing Parts with Tantalum and Tantalum Alloy
CN106541129A (en) * 2016-11-08 2017-03-29 西安铂力特激光成形技术有限公司 A kind of preparation method of particles reiforced metal-base composition
CN106587999A (en) * 2016-11-08 2017-04-26 南京医科大学附属口腔医院 3D printing zirconia based denture material and application of the same
CN106630973A (en) * 2016-09-07 2017-05-10 山东工业陶瓷研究设计院有限公司 Aluminum oxide ceramic slurry for 3D printing and preparation method and application of aluminum oxide ceramic slurry

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150069649A1 (en) * 2007-04-04 2015-03-12 The Exone Company Powder Particle Layerwise Three-Dimensional Printing Process
CN105499570A (en) * 2015-12-25 2016-04-20 吉林大学 3D printing method of metal ceramic functional gradient part in alternating magnetic field
CN105584045A (en) * 2015-12-25 2016-05-18 吉林大学 Multi-material part 3D printing device and printing method thereof
CN106270512A (en) * 2016-09-01 2017-01-04 中国地质大学(武汉) 3D prints support slurry, metal paste and the Method of printing of metal labyrinth
CN106630973A (en) * 2016-09-07 2017-05-10 山东工业陶瓷研究设计院有限公司 Aluminum oxide ceramic slurry for 3D printing and preparation method and application of aluminum oxide ceramic slurry
CN106334793A (en) * 2016-11-08 2017-01-18 西安铂力特激光成形技术有限公司 Method for Producing Parts with Tantalum and Tantalum Alloy
CN106541129A (en) * 2016-11-08 2017-03-29 西安铂力特激光成形技术有限公司 A kind of preparation method of particles reiforced metal-base composition
CN106587999A (en) * 2016-11-08 2017-04-26 南京医科大学附属口腔医院 3D printing zirconia based denture material and application of the same

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Application publication date: 20171124