CN103801696B - Method for preparing powder metallurgy complex shape part by using 3D printing mold - Google Patents

Method for preparing powder metallurgy complex shape part by using 3D printing mold Download PDF

Info

Publication number
CN103801696B
CN103801696B CN201410047509.1A CN201410047509A CN103801696B CN 103801696 B CN103801696 B CN 103801696B CN 201410047509 A CN201410047509 A CN 201410047509A CN 103801696 B CN103801696 B CN 103801696B
Authority
CN
China
Prior art keywords
mould
printing
minus
slip
metal
Prior art date
Application number
CN201410047509.1A
Other languages
Chinese (zh)
Other versions
CN103801696A (en
Inventor
郭志猛
张欣悦
郭雷辰
叶青
柏鉴玲
张晓冬
Original Assignee
北京科技大学
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 北京科技大学 filed Critical 北京科技大学
Priority to CN201410047509.1A priority Critical patent/CN103801696B/en
Publication of CN103801696A publication Critical patent/CN103801696A/en
Application granted granted Critical
Publication of CN103801696B publication Critical patent/CN103801696B/en

Links

Abstract

The invention provides a method for preparing a powder metallurgy complex shape part by using a 3D printing mold. A 3D printing technology and a gel-casting forming technology are combined, namely a 3D printer is used for printing a thin-wall hollow part minus mold in a complex shape, the gel-casting technology is used for preparing metal slurry, after a catalyst and an initiator are added, the metal slurry is injected into the part minus mold, the metal slurry is solidified and dried, then organic solvent is used for dissolving a plastic mold or the plastic mold is subjected to thermal decomposition to be removed, so that a formed part blank body is obtained, and after the part blank body is dried, degummed and sintered, the needed powder metallurgy part is obtained. The method is capable of being used for preparing powder metallurgy parts of any complex shape, even and small in part tissue, stable and reliable in technology, high in operability, short in consumed time, high in efficiency, low in cost and beneficial to industrial production for preparation of the powder metallurgy parts through the 3D printing technology.

Description

A kind of method preparing powder metallurgy complicated shape part using 3D printing mould
Technical field
The present invention relates to a kind of powder forming technology, belong to parts preparation field in powder metallurgical production technique, especially The method that there is provided a kind of Gel-casting process formed powder metallurgy complicated shape part of combination 3D printing technique.
Background technology
The literature search consulted nearly 10 years understands, 3D printing technique is one kind of Rapid Prototyping technique, also referred to as increases material system Make, its ultimate principle is that one is cut into infinitely according to a certain coordinate axess by the mode ready-made 3D model such as design or scanning Multiple sections, then in layer print and are stacked into together by original position, form a stereomodel in kind. 3D printing technique quickly grows at present, and wherein metal material direct forming technology becomes a big focus of research and application.Gold Belong to the metal parts that 3D printing technique can prepare complicated shape, but existing metal 3D printer cost is prohibitively expensive, metal material Expect that direct forming takes long extremely inefficient, feed metal powder is had high demands, the good metal dust of demand superfine spherical degree, become This is higher, and printing precision is not high.
Gel casting technique is that organic monomer and solvent are configured to certain density premixed liquid, metal or ceramics End is suspended in the concentrate suspension wherein making low viscosity, high solid loading(Slip), after adding catalyst and initiator, by this Plant concentrate suspension(Slip)In injection non-multi punch die, in a certain temperature conditions, organic polymer is monomer crosslinked to be aggregated into Three-dimensional network shaped polymer gel, and so that powder particle is bondd in situ and solidify to form base substrate.Base substrate drying, degumming and sintering Obtain part product.The casting flaws such as the metal parts of gel casting technique preparation is no loose, shrinkage cavity, component segregation;Tool There are uniformly tiny microscopic structure, good mechanical properties;It is easy to add dystectic alloying element and prepare composite;Permissible Conveniently realize the near-net-shape of complex component;In various metals material production field such as metallic magnetic material, biomedical implantation material Material, metal-based powder metallurgy structural member etc. all have broad application prospects.
The present invention provides 3D printing technique attached gel injection molding and forming technology to prepare the side of powder metallurgy complicated shape part Method, is printed the component die of hollow, then prepares powdered metal parts by gel injection molding and forming technology using 3D printing equipment, By the feature manufacturing flexibly and saving raw material of 3D printing technique and gel injection molding and forming technology, can prepare arbitrarily complicated The powdered metal parts of shape, the tiny good mechanical properties of part even tissue, time-consuming compared with common metal 3D printing technique Short efficiency high, relatively low to metal dust granularity and shape need, low cost and Product Precision are high.Yet there are no and beaten using 3D Die tool prepares the relevant report of powdered metal parts method.
Content of the invention
It is an object of the invention to provide a kind of method preparing powder metallurgy complicated shape part using 3D printing mould, Print part minus model in advance using 3D printing technique, recycle the gel injection molding and forming technology system of metal dust slip For the parison going out powdered metal parts, drying degumming, sintering can be made into the powdered metal parts of spatial complex shape, part essence Degree is higher, functional, and process stabilizing is reliable, strong operability, takes short efficiency high, and cost is relatively low.Concrete technology flow process and ginseng Number is as follows:
1. print die:Using 3D printing technique print space complicated shape, particularly there is the part of inner chamber complicated shape Space minus mould, mould hollow and there is certain thickness and rigidity;
2. metal slip preparation:Prepare metal slip using solubility colloidal sol, add the dispersant of 0.01wt ~ 0.2wt% Improve slip mobility, adjust pH value with ammonia;
3. slip casting:The catalyst of 0.01wt% ~ 0.3wt% and drawing of 0.01wt% ~ 0.5wt% is added in metal slip Send out agent, by the method for negative pressure of vacuum, pressure pouring or vibrations, the part that metal slip is poured into hollow is born after stirring In pattern tool, in the presence of catalyst and initiator, organic monomer cross-linked polymeric becomes three-dimensional network shaped polymer gel, and makes Metal powder granulates bond in situ and solidify to form base substrate, and part blanks are vacuum dried 2 ~ 8 hours under the conditions of 60 DEG C ~ 150 DEG C;
4. remove mould:Mould of plastics can be made in the part blanks immersion organic solvent with mould of plastics to dissolve and to go Remove, ABS plastic mould can be dissolved using tetrahydrofuran solvent, PLA mould of plastics then can use acetone, chloroform, dichloromethane etc. Solvent dissolving removes, and also the part blanks with ABS plastic mould or PLA mould of plastics can be placed in vacuum is 10-2~10- 3In the vacuum drying oven of Pa, heating and thermal insulation in 80 DEG C ~ 300 DEG C temperature ranges, mould of plastics is subject to heat sublimation, until mould goes completely Remove, thus obtaining the part blanks of complicated shape;
5. it is dried and degumming:Part blanks are vacuum dried 2 ~ 8 hours under 60 DEG C ~ 150 DEG C temperature conditionss, subsequently in sky Under gas, protective atmosphere or vacuum condition, part blanks are carried out degumming process in 1 ~ 4 hour in 200 DEG C ~ 600 DEG C insulations;
6. sinter:Under protective atmosphere or vacuum condition, according to the optimum sintering process bar of base substrate metal or alloy powder Part and parameter(100℃~1500℃)It is sintered.
Described 3D printing component die includes:
1)Design the part minus mould threedimensional model of desired structure shape using 3D sculpting software, be layered and cut It is considered to contraction situation between base substrate and material object after piece is processed, layered plane is carried out by many two dimension meters by geometric center Calculate, mold former is pressed 110% ~ 130%(I.e. shrinkage ratio K=1.1 ~ 1.3)Scaling;
2)The threedimensional model parameter of part minus mould is imported in 3D printing equipment, prints and there is certain wall thickness and strong Degree, spatial complex shape, particularly there is the part minus mould of inner chamber complicated shape;
3)Printing part minus mould material therefor can be ABS plastic or PLA plastics, and during printing, printer nozzle temperature is 100 DEG C ~ 300 DEG C, part minus mould synusia thickness is 0.05mm ~ 0.5mm.
Described metal slip is prepared by gel injection molding and forming technology include following operation:
1)By organic monomer hydroxyethyl methylacrylate and solvent toluene by volume 0.6 ~ 1.5:1 ratio mixing is all Even, and add the benzoyl peroxide of 0.01wt% ~ 0.5wt%, stir, be configured to organic monomer concentration be 30vol% ~ The premixed liquid of 60vol%;
2)Metal dust optimal to 5 ~ 120 μm of particle size range, granularmetric composition is added in premixed liquid, stirring is fully made solid Phase content is the slip of 30vol% ~ 68vol%, and the dispersant adding 0.01wt% ~ 0.2wt% is to improve slip mobility;
Or operate including following:
1)By organic monomer acrylamide, methyl diacrylamine or N- vinyl pyrrole ketone and deionized water in mass ratio 0.2~0.25:1 ratio mix homogeneously, and add the cross-linking agent N of 0.001wt% ~ 0.2wt%, N '-methylene-bisacrylamide, Stir to being completely dissolved, join to obtain the premixed liquid for 20wt% ~ 25wt% for the organic monomer concentration;
2)Metal dust optimal to 5 ~ 120 μm of particle size range, granularmetric composition is added in premixed liquid, stirring is fully made solid Phase content be 30vol% ~ 60vol% metal slip, add 0.01wt% ~ 0.2wt% dispersant to improve slip mobility, and Adjust the pH value of slurry using ammonia.
Compared with prior art, the present invention has following beneficial effect:
(1)Present invention offer is a kind of to prepare powdered metal parts using 3D printing technique attached gel injection molding and forming technology Method.The powdered metal parts of arbitrarily complicated shape can be prepared, time-consuming short efficiency high, the powdered metal parts high precision of preparation, Even tissue is tiny, good mechanical properties;
(2)According to the difference requirement of part performance, can flexibly add various alloying elements;
(3)It is reliable and stable that this method prepares powdered metal parts, strong operability, repeatable high, and 3D printing can be made to prepare Powdered metal parts industrialized production.
Specific embodiment
Embodiment 1:Prepare iron-base part using 3D printing mould and gel injection molding and forming technology
(1)Print die:Print the part minus model of complicated shape using 3D printing equipment, print raw material and mould for ABS Material;
(2)Prepared by metal slip:50ml organic monomer hydroxyethyl methylacrylate is dissolved in 50ml toluene solvant, And add the cross-linking agent benzoyl peroxide of 0.1g, stir, be configured to the premixed liquid that organic monomer concentration is 50vol%;Will Particle mean size is that 50 μm of iron powder adds in premixed liquid, and the slip that solid concentration is 60vol% is fully made in stirring, adds The dispersant Oleic acid of 0.01wt% is to improve slip mobility;
(3)Vacuum injection molding:Add the catalyst n of 0.06wt% in iron powder slip, N '-dimethyl aniline, after stirring fully By type vacuum injecting and forming machine, iron powder slip is injected in the part minus mould of hollow, after the completion of reaction to be solidified, puts into vacuum In drying baker, 80 DEG C of dryings 6 hours;
(4)The dissolving demoulding:Using tetrahydrofuran solvent, the ABS plastic mould dissolving outside iron-base part base substrate is removed, Obtain iron-base part base substrate;
(5)Body drying and degumming:Iron-base part base substrate is vacuum dried 6 hours at 80 DEG C, subsequently in nitrogen atmosphere Under, degumming process was carried out to iron-base part base substrate in 1 hour in 600 DEG C of insulations;
(6)Sintering:Under nitrogen atmosphere, iron-base part base substrate is sintered in 1180 DEG C of insulations for 2 hours, and final acquisition is fine and close Iron-base part, meet the requirement of properties of product.
Embodiment 2:Prepare titanium structural member using 3D printing mould and gel injection molding and forming technology
(1)Print die:Print the part model that complicated shape carries inner chamber using 3D printing equipment, printing raw material is PLA plastics;
(2)Prepared by metal slip:By 50g organic monomer acrylamide and 200ml deionized water mix homogeneously, and add The cross-linking agent N of 0.2g, N '-methylene-bisacrylamide, stir to being completely dissolved, join organic monomer concentration be 20wt% pre- Mixed liquid;The titanium valve that particle mean size is 30 μm adds in premixed liquid, and the slip that solid concentration is 55vol% is fully made in stirring, plus The dispersant Oleic acid entering 0.02wt% is to improve slip mobility, and is adjusted pH value to 10 using ammonia;
(3)Pressure casting:To in metal slip add 0.08wt% catalyst n, N, N ', N '-tetramethylethylenediamine and The initiator ammonium persulfate of 0.1wt%, makes slip be injected into the component die of hollow by applying certain pressure after stirring In, after the completion of reaction to be solidified, put in vacuum drying oven, 100 DEG C of dryings 4 hours;
(4)Remove mould:It is 10 that titanium structural member base substrate with PLA mould of plastics is put into vacuum-2The vacuum drying oven of Pa In, it is incubated 2 hours in 200 DEG C, so that PLA mould of plastics is distilled to remove completely;
(5)Degumming:Under argon atmosphere, titanium structural member base substrate carries out degumming process in 2 hours in 400 DEG C of insulations,
Sintering:Under argon atmosphere, by titanium structural member base substrate 3 hours sintering of 1250 DEG C of insulations, final acquisition is fine and close Titanium structural member, meet properties of product require.

Claims (5)

1. a kind of using 3D printing mould prepare powder metallurgy complicated shape part method it is characterised in that:
Step one, print die:Print the part minus mould with inner chamber complicated shape using 3D printing technique;
Step 2, the preparation of metal slip:Prepare metal slip using solubility colloidal sol, and add dividing of 0.01wt%-0.2wt% Powder Oleic acid;
Step 3, slip casting:In metal slip add 0.01wt%-0.3wt% catalyst n, N '-dimethyl aniline or N, N, N ', the initiator ammonium persulfate of N '-tetramethylethylenediamine and 0.01wt%-0.5wt%, is poured by vacuum injection molding or pressurization Metal slip is injected in the minus component die of 3D printing by the method for casting, obtains multiple after metal slip is fully cured in mould Miscellaneous part blanks;
Step 4, removal minus mould:Using organic solvent, the minus mould of plastics dissolving outside part blanks is removed, or make Mould of plastics thermally decomposes to remove, and obtains the part blanks of complicated shape;
Step 5, drying and degumming:After part blanks vacuum drying, under air, protective atmosphere or vacuum condition, by part base Body is incubated 1-4 hour at 200 DEG C -600 DEG C, by the colloid removing in part blanks;
Step 6, sintering:Under protective atmosphere or vacuum condition, the metal dust that part blanks are used in part most preferably burns Sinter under knot process conditions, obtain required powdered metal parts.
2. a kind of method preparing powder metallurgy complicated shape part using 3D printing mould as claimed in claim 1, it is special Levy and be, described print die includes:
(1) part minus mold former is designed by 3D sculpting software, and the threedimensional model of part minus mould is carried out Hierarchy slicing processes the sintering shrinkage problem it is considered between base substrate and material object, by geometric center, layered plane is carried out many-side Two dimension calculating, the threedimensional model of part minus mould is pressed 110%-130% scaling;
(2) threedimensional model parameter is imported in 3D printing equipment, print the complicated shape part that wall thickness is 0.05mm-4mm and bear Pattern has;
(3) raw material of 3D printing component die is selected according to part material performance requirement, select using ABS plastic or PLA plastics, the synusia thickness of component die is 0.05mm-0.5mm, and during printing, printer nozzle temperature is 100 DEG C -300 DEG C.
3. a kind of method preparing powder metallurgy complicated shape part using 3D printing mould as claimed in claim 1, it is special Levy and be, described metal slip preparation includes:
According to the performance of metal, the sol system adopting in the preparation process of sol solutionses has two kinds, respectively hydroxyethyl methacrylate Ethyl ester-toluene gel rubber system and aqueous gel system:
Described hydroxyethyl methylacrylate-toluene gel rubber system preparation process:
Step one, by organic monomer hydroxyethyl methylacrylate and solvent toluene 0.6-1.5 by volume:1 ratio mixing is all Even, and add the cross-linking agent benzoyl peroxide of 0.01wt%-0.5wt%, stir, be configured to organic monomer metering system The premixed liquid of sour hydroxyl ethyl ester concentration 30vol%-60vol%;
Step 2, optimal to particle size range 5-120 μm, granularmetric composition metal dust is added in premixed liquid, stir and make Solid concentration is the metal slip of 30vol%-68vol%, and the dispersant Oleic acid adding 0.01wt%-0.2wt% is to improve material Slurry mobility;
Described aqueous gel system preparation process:
Step one, organic monomer acrylamide, methyl diacrylamine or N- vinyl pyrrole ketone and deionized water are pressed quality Compare 0.2-0.25:1 ratio mix homogeneously, and add the cross-linking agent N of 0.001wt%-0.2wt%, N '-methylene bisacrylamide acyl Amine, stirs to being completely dissolved, and joins to obtain the premixed liquid for 20wt%-25wt% for the organic monomer concentration;
Step 2, optimal to particle size range 5-120 μm, granularmetric composition metal dust is added in premixed liquid, stirring is fully made Solid concentration is the metal slip of 30vol%-60vol%, and the dispersant Oleic acid adding 0.01wt%-0.2wt% is to improve material Slurry mobility, and adjust pH value using ammonia.
4. a kind of method preparing powder metallurgy complicated shape part using 3D printing mould as claimed in claim 1, it is special Levy and be, described slip casting is the method using negative pressure of vacuum, pressurization or vibrations degasification, and metal slip is injected part minus In mould, remove the bubble in slip, and be allowed to be completely filled with whole part minus dies cavity.
5. the method preparing powder metallurgy complicated shape part using 3D printing mould as claimed in claim 1, its feature exists In described organic solvent is to be completely dissolved ABS plastic or PLA plastics, and avoids the Organic substance dissolving in base substrate is organic molten Agent, the organic solvent of ABS plastic mould is oxolane, and the organic solvent of PLA mould of plastics is acetone, chloroform, dichloro Methane, all will not dissolve the Organic substance in part blanks through testing above organic solvent;
Described thermal decomposition is that the part blanks with ABS plastic mould or PLA mould of plastics are placed in vacuum for 10-2-10- 3In the vacuum drying oven of Pa, heating and thermal insulation in 80 DEG C of -300 DEG C of temperature ranges, mould of plastics is subject to heat sublimation, until mould goes completely Remove.
CN201410047509.1A 2014-02-11 2014-02-11 Method for preparing powder metallurgy complex shape part by using 3D printing mold CN103801696B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410047509.1A CN103801696B (en) 2014-02-11 2014-02-11 Method for preparing powder metallurgy complex shape part by using 3D printing mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410047509.1A CN103801696B (en) 2014-02-11 2014-02-11 Method for preparing powder metallurgy complex shape part by using 3D printing mold

Publications (2)

Publication Number Publication Date
CN103801696A CN103801696A (en) 2014-05-21
CN103801696B true CN103801696B (en) 2017-02-08

Family

ID=50699352

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410047509.1A CN103801696B (en) 2014-02-11 2014-02-11 Method for preparing powder metallurgy complex shape part by using 3D printing mold

Country Status (1)

Country Link
CN (1) CN103801696B (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104085114A (en) * 2014-07-24 2014-10-08 柴源 Multi-process manufacturing system for 3D (Three Dimensional) printing
CN105109040B (en) * 2014-12-31 2018-09-11 广西科技大学 Three-dimensional structure manufacturing process
CN104625072A (en) * 2015-01-30 2015-05-20 上海交通大学 Method for 3D printing of electromagnetic coil
CN104799932B (en) * 2015-04-14 2017-04-26 西安交通大学 Porous structure bone cement screw design and manufacturing method thereof
CN104874768B (en) * 2015-04-24 2016-11-23 昆明理工大学 A kind of method that the 3D of utilization print space structure prepares metal-base composites
CN104841935B (en) * 2015-05-19 2017-03-01 北京科技大学 A kind of mixed slurry 3D printing device and its printing-forming method
CN104907567B (en) * 2015-06-29 2017-03-08 北京科技大学 A kind of method for preparing high-density complicated shape cemented carbide parts and cutter
CN104959594B (en) * 2015-07-10 2017-02-22 北京科技大学 Method for preparing high-solid-phase low-adherence magnetic alloy powder used for 3D printing
CN104959613B (en) * 2015-07-10 2017-02-22 北京科技大学 Method for curing and shaping slurry spray used for 3D printing
CN105108134B (en) * 2015-08-04 2017-03-08 成都新柯力化工科技有限公司 A kind of paste metallic composite for 3D printing and preparation method thereof
CN105057665A (en) * 2015-08-17 2015-11-18 王海英 Three-dimensional part printing method
CN106515014A (en) * 2015-09-08 2017-03-22 优克材料科技股份有限公司 Three-dimensional forming stand for manufacturing molds and manufacturing three-dimensional objects by molds
CN105268977B (en) * 2015-11-05 2017-05-17 北京科技大学 Method for quickly manufacturing titanium alloy artificial biological joint
CN107538597A (en) * 2016-06-23 2018-01-05 优克材料科技股份有限公司 Three-dimensional printing formation unit
US20180009032A1 (en) * 2016-07-08 2018-01-11 General Electric Company Metal objects and methods for making metal objects using disposable molds
TWI605931B (en) * 2016-10-05 2017-11-21 台灣日邦樹脂股份有限公司 Mold and thermoforming process using the same
CN106312069A (en) * 2016-11-22 2017-01-11 赵晴堂 Melt pool control method for additive manufacturing
DE202017100135U1 (en) * 2017-01-12 2018-04-15 Valmet Ab Refinerscheibensegment
CN106591664A (en) * 2017-02-11 2017-04-26 丹阳惠达模具材料科技有限公司 Preparation method of VC-VN matrix steel-based steel bond hard alloy
CN106591665A (en) * 2017-02-11 2017-04-26 丹阳惠达模具材料科技有限公司 Preparation method of VC-VN medium alloy hot work die steel-based steel bond hard alloy
CN106676362A (en) * 2017-02-11 2017-05-17 丹阳惠达模具材料科技有限公司 Preparation method of TiC high-alloy hot work die steel based steel bond hard alloy
CN106591673A (en) * 2017-02-11 2017-04-26 丹阳惠达模具材料科技有限公司 Preparation method of TiC corrosion-resistant plastic steel base steel bonded hard alloy
CN106591669A (en) * 2017-02-11 2017-04-26 丹阳惠达模具材料科技有限公司 Preparation method of VC tool steel base steel bonded hard alloy
KR20190126909A (en) * 2017-03-20 2019-11-12 스트라타시스 엘티디. Method and system for additive manufacturing using powder material
CN107187023A (en) * 2017-06-20 2017-09-22 宁夏共享模具有限公司 A kind of method at the top of use FDM technology printing hollowed mould
CN107500781B (en) * 2017-09-28 2020-10-09 上海应用技术大学 Preparation method of porous ceramic
CN107877848A (en) * 2017-12-24 2018-04-06 湖南工业大学 A kind of copper-based powder 3D printing base substrate method of ink WC bases and its forming method
CN108653820A (en) * 2018-05-29 2018-10-16 四川维思达医疗器械有限公司 A kind of preparation method of porous metals bone inlay object
CN110227795A (en) * 2019-07-15 2019-09-13 吴振行 A kind of casting method using 3D printing production shell mold
CN111069531A (en) * 2020-01-06 2020-04-28 山东森宇精工科技有限公司 Wax mould tree manufacturing method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1456535A (en) * 2003-05-30 2003-11-19 武汉理工大学 Process for preparing porous ceramic by water-based gel injection moulding method
CN1978385A (en) * 2005-12-09 2007-06-13 中国科学院兰州化学物理研究所 Nano ceramic water-base gel casting method
CN103113112A (en) * 2013-02-04 2013-05-22 西安交通大学 Preparation method of metal toughened ceramic-based composite material turbine blade
CN103350229A (en) * 2013-07-05 2013-10-16 北京科技大学 Gel ultrasonic concussion forming method for metal parts
CN103447534A (en) * 2013-09-06 2013-12-18 北京科技大学 Organic physical gel-based gel-casting forming method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100358620B1 (en) * 2000-11-25 2002-10-30 예명지 Manufacturing method of 3 dimensional gauze accessories using cad/cam

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1456535A (en) * 2003-05-30 2003-11-19 武汉理工大学 Process for preparing porous ceramic by water-based gel injection moulding method
CN1978385A (en) * 2005-12-09 2007-06-13 中国科学院兰州化学物理研究所 Nano ceramic water-base gel casting method
CN103113112A (en) * 2013-02-04 2013-05-22 西安交通大学 Preparation method of metal toughened ceramic-based composite material turbine blade
CN103350229A (en) * 2013-07-05 2013-10-16 北京科技大学 Gel ultrasonic concussion forming method for metal parts
CN103447534A (en) * 2013-09-06 2013-12-18 北京科技大学 Organic physical gel-based gel-casting forming method

Also Published As

Publication number Publication date
CN103801696A (en) 2014-05-21

Similar Documents

Publication Publication Date Title
CN104526838B (en) Method for 3D ceramic printing forming
Chen et al. High-performance ceramic parts with complex shape prepared by selective laser sintering: a review
Shahzad et al. Additive manufacturing of zirconia parts by indirect selective laser sintering
Gilissen et al. Gelcasting, a near net shape technique
Yang et al. Recent developments in gelcasting of ceramics
CN105541324B (en) The preparation method of phone housing
CA2488364C (en) Method for producing highly porous metallic moulded bodies close to the desired final contours
JP2016188432A (en) Production method of powder metallurgy workpiece and workpiece
CN100537802C (en) A kind of method for preparing high dense TiAl-base alloy
CN103240412B (en) Method for preparing powder super-alloy by near net shape
CN105081330B (en) A kind of step-like bar of the ultra-fine cemented carbide of big L/D ratio and preparation method
US6761852B2 (en) Forming complex-shaped aluminum components
Deckers et al. Isostatic pressing assisted indirect selective laser sintering of alumina components
CN104711442B (en) A kind of 3D prints the method manufacturing hard alloy
Tallon et al. Recent trends in shape forming from colloidal processing: A review
Cheng et al. Fabrication of W–20 wt.% Cu alloys by powder injection molding
CN101886192B (en) Method for preparing high-performance iron nickel magnetically soft alloy by using powder metallurgy process
Gromada et al. Ceramic cores for turbine blades via injection moulding
CN103981436B (en) The manufacture method of metal powder injection molded high strength martensitic aging steel
CN104668565A (en) Powder injection molding feedstock preparing method and powder injection molding method
Stampfl et al. Rapid prototyping and manufacturing by gelcasting of metallic and ceramic slurries
CN100386167C (en) Micro injection process of forming soft magnetic Fe-Ni alloy
CN105328121B (en) Die-free fast casting method based on fused deposition technology
CN103990761B (en) A kind of production method of hollow turbine vane with impact opening structure
CN102875150B (en) Method for preparing silicon carbide ceramic impeller through gel casting and pressureless sintering

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model