CN108165028A - One kind is for selective laser sintering 3D printing hot investment casting wax-pattern dusty material and preparation method and application - Google Patents

One kind is for selective laser sintering 3D printing hot investment casting wax-pattern dusty material and preparation method and application Download PDF

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Publication number
CN108165028A
CN108165028A CN201711483877.0A CN201711483877A CN108165028A CN 108165028 A CN108165028 A CN 108165028A CN 201711483877 A CN201711483877 A CN 201711483877A CN 108165028 A CN108165028 A CN 108165028A
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China
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wax
parts
pattern
dusty
investment casting
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CN201711483877.0A
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Chinese (zh)
Inventor
范智勇
汤从海
范德贤
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广州市德馨蜡制品有限公司
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Priority to CN201711483877.0A priority Critical patent/CN108165028A/en
Publication of CN108165028A publication Critical patent/CN108165028A/en

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06Waxes
    • 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
    • B33Y70/00Materials specially adapted for additive manufacturing
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention belongs to 3D printing field of material technology, disclose a kind of for selective laser sintering 3D printing hot investment casting wax-pattern dusty material and preparation method and application.Material of the present invention includes the component of following quality meter:Pertroleum wax, beeswax, lignite wax, PE waxes, addition resin, toughener, stearic acid, levelling agent are respectively 30~80 parts, 0~10 part, 0~10 part, 0~5 part, 0~20 part, 3~10 parts, 0.5~5 part, 0.2~5 part or 20~70 parts, 10~20 parts, 10~20 parts, 5~10 parts, 20~30 parts, 10~20 parts, 5~10 parts, 0.2~5 part;Surfactant 1~10 ‰;Releasing agent 1 ‰~10 ‰;Antistatic agent 0 ‰~5 ‰;Ultra-violet absorber 0~5 ‰;Antioxidant 0~10 ‰;Inorganic filler 0~10%.It can be applied in 3D printing with that hardness is moderate, fusing point is low, shrinking percentage is low etc. is specific.

Description

One kind for selective laser sintering 3D printing hot investment casting wax-pattern dusty material and its Preparation method and application

Technical field

The invention belongs to 3D printing field of material technology, more particularly to a kind of accurate for selective laser sintering 3D printing Cast wax-pattern dusty material and preparation method and application.

Background technology

3D printing technique is using Computerized three-dimensional Design of digital object module, then " will be beaten by 3D printing equipment Material is printed successively be superimposed ", mathematical model is finally become in kind.3D printing technique is the core skill of manufacturing industry transition and upgrade One of art has many enterprises in hot investment casting field and attempts to use 3D printing technique, but printed material is always to perplex Everybody problem.The 3D such as current selecting property laser thawing, stereolithography, selective laser sintering, 3 D-printing and gluing Printing technique is constantly merged with foundary industry, to start out newer manufacturing mode.SLS be in 3D printing technique very A kind of common and important printing technique, the material for selective laser sintering is all kinds of powder, including nylon powder, covers and wraps up in Buddhist nun The glass dust of dragon, Silon, wax powder, metal powder (must often be re-sintered after printing and copper infiltration), covers makrolon powder It wax metal powder and covers and wraps up in heat-curing resin fine sand etc..

Model casting is also referred to as precision-investment casting, using lost-wax process as casting method, using final products as copy, passes through mould Tool manufacture, wax-pattern manufacture, shell manufacture, moulding by casting, casting post-treating and other steps obtain the unique manufacture advantage of final casting. Precision-investment casting application range is wider, and high-end casting is with the obvious advantage.But the investment precision casting technology complicated manufacturing cycle is long, Be difficult to meet modern society to enterprise product quick diversification and the needs of.

Because technology, material and equipment price reason, 3D printing are started late applied to casting industry, but with biography The increase for casting industry survival pressure of uniting and investment casting are tired in the precision components model process such as space flight and aviation are made Difficulty, foundry enterprise constantly explore the path of transition and upgrade, method, and 3D printing is for integrated manufacturing system (IMS), raising efficiency, reduction Cost etc. is gradually favored by more and more people.Easily there is contraction, wax-pattern table in preparation process in precision-investment casting wax-pattern There is the problems such as shell spalling when dent, demoulding in face, and 3D printing technique has very big change in these areas because being successively to print It is kind.

Wax powder material category is less in selective laser sintering 3D printing material on the market at present, on the market applied to essence casting The 3D printing wax powder of wax-pattern is using common wax powder or common wax powder/stearic acid as material, and common wax powder is paraffin, conventional cast wax Or other low polymer powder form.Wax powder can not meet complicated or fine features wax-pattern into powder and single property It makes, low polymer kinematic viscosity, fusing point are high, can increase difficulty in cast member melting hydrodewaxing step.Patent CN104693579A disclose matched by the wax powder base-material of double size gradings and add stearic acid, white carbon, carbon black, be chopped carbon Fiber prepares a kind of method of the composite modified wax powder of laser sintered 3D printing, although wax powder prepared by this method improves electrostatic Adsorb agglomeration, the wax-pattern dimensional accuracy intensity of making can reach the requirement of model casting wax pattern, but because wax powder grain size and Grain size ratio requires high, and limitation and raw material problem are larger, have very big shadow to wax powder printing effect when wax powder changes into powder It rings.It is lower melting-point low molecular weight wax powder that it, which selects wax powder, and the performance of overall wax powder is not required, for large-scale wax group and The wax pattern of thin-wall construction makes, it is more difficult to meet the requirements, because what is selected is the requirement that wax powder increases raw material simultaneously again.Patent CN1326828A discloses a kind of low melting point powder for laser sintering fast forming precisely casting wax mold, using polyethylene as former material Material prepares wax powder, then adds surfactant, releasing agent, light absorber, thinner, antistatic agent, activeness and quietness agent, filler Deng, it is good to essence casting adaptability although dusty material agglutinating property obtained is good, molding is excellent, cause by raw material of polyethylene Kinematic viscosity of whole wax material itself is high, while shrinkage is big, has a significant impact when casting does shell.

The selective laser sintering 3D printing hot investment casting wax powder of high-quality is for promoting 3D printing-hot investment casting to have act The effect of sufficient weight, while larger social value can be created.

Invention content

In order to overcome the shortcomings and deficiencies of the prior art described above, primary and foremost purpose of the invention is to provide one kind for selecting The laser sintered 3D printing hot investment casting wax-pattern dusty material of property.

Another object of the present invention is to provide a kind of above-mentioned for selective laser sintering 3D printing hot investment casting wax-pattern powder The preparation method of powder material.

Still a further object of the present invention is to provide above-mentioned for selective laser sintering 3D printing hot investment casting wax-pattern powder material Expect the application in 3D printing.

The purpose of the present invention is realized by following proposal:

One kind includes the group of following quality meter for selective laser sintering 3D printing hot investment casting wax-pattern dusty material Point:30~80 parts of pertroleum wax;0~10 part of beeswax;0~10 part of lignite wax;0~5 part of PE waxes;Add 0~20 part of resin;Toughener 3~10 parts;0.5~5 part of stearic acid;0.2~5 part of levelling agent;Surfactant 1~10 ‰;Releasing agent 1 ‰~10 ‰;It is anti-quiet Electric agent 0 ‰~5 ‰;Ultra-violet absorber 0~5 ‰;Antioxidant 0~10 ‰;Inorganic filler 0~10%.

Or include the component of following quality meter:20~70 parts of pertroleum wax;10~20 parts of beeswax;10~20 parts of lignite wax;PE 5~10 parts of wax;Add 20~30 parts of resin;10~20 parts of toughener;5~10 parts of stearic acid;0.2~5 part of levelling agent;It lives on surface Property agent 1~10 ‰;Releasing agent 1 ‰~10 ‰;Antistatic agent 0 ‰~5 ‰;Ultra-violet absorber 0~5 ‰;Antioxidant 0~ 10‰;Inorganic filler 0~10%.

The pertroleum wax can be 70# microwaxes, 80# microwaxes, 85# microwaxes, 682# microwaxes, 54# full refining stones Wax, 58# fully refined paraffin wax, 62# fully refined paraffin wax, 62# semi-refined paraffin waxs, 64# fully refined paraffin wax, 64# semi-refined paraffin waxs, 66# One or more in fully refined paraffin wax, 66# semi-refined paraffin waxs.

It is described addition resin can be C5 Petropols, C5 hydrogenated petroleum resins, C9 Petropols, C9 hydrogenated petroleum resins, One or more in terpene resin, chlorinated aromatic Petropols, rosin resin.

The toughener can be APAO, low molecular polyethylene, low-molecular polypropylene, polyisobutene, ethylene-propylene copolymer Object, ethyl cellulose, EVA, haloflex, styrene-butadiene thermoplastic elastomer (TPE), ethylene propylene diene rubber, ethylene-pungent One or more in alkene block copolymer.

The levelling agent is levelling agent commonly used in the art, such as can be acrylate copolymer.

The surfactant can be neopelex, sodium sulfonate, dioctyl succinate disulfonate acid, alkyl ether One or more in carboxylate, alkyl trimethyl ammonium salt, alkyl dimethyl benzyl ammonium salt etc..

The releasing agent is preferably zinc stearate.

The antistatic agent is antistatic agent commonly used in the art, such as can be stearamide propyl-β-carboxylic Ethyl-dimethyl ammonium dihydrogen phosphate, ECH antistatic agents, octadecyltrimethylammonium chloride, octadecyldimethyl quaternary ammonium nitric acid One or more in salt etc..

Antioxidant antioxidant commonly used in the art can be such as antioxidant 1010, antioxidant 264, resist One or more in oxygen agent 1076, irgasfos 168, antioxidant 300 etc..

Ultra-violet absorber ultra-violet absorber commonly used in the art such as can be ultra-violet absorber One or more in uv531, ultraviolet absorbent uv-9, ultra-violet absorber 770 etc..

The inorganic filler can be silicon powder, nano-calcium carbonate, nanometer Al2O3In one or more.The nothing The nanometer powder grain size of machine filler is less than or equal to 100 μm, while inorganic filler also acts the effect of thinner, can not only subtract The cubical contraction of few casting wax, while reach certain viscosity reducing effect, the amount of inorganic filler is controlled, makes its mistake wax rank in casting Section there will not be residual.

The present invention can also be normal containing this field for selective laser sintering 3D printing hot investment casting wax-pattern dusty material The additive of rule, such as colorant.

The present invention also provides a kind of above-mentioned systems for selective laser sintering 3D printing hot investment casting wax-pattern dusty material Preparation Method includes the following steps:Pertroleum wax, beeswax, lignite wax are mixed, 90~100 DEG C of heating stirrings are melted, and obtain wax liquor A; Stirring adds in PE waxes, addition resin, toughener, stearic acid, levelling agent, continues heating stirring 30min~1h, obtains wax liquor B;It is cold But, crushing or steel band sorting molding granulation, obtain base wax C;Base wax C is made into powder by mechanical low-temperature Freezing smashing method, stirring adds Enter surfactant and releasing agent, vacuum drying obtains wax powder base-material D;Base-material D is added in double-cone mixer, is added in anti-quiet Electric agent, ultra-violet absorber, antioxidant, inorganic filler are uniformly mixed, and obtain casting for selective laser sintering 3D printing precision Make wax-pattern dusty material.

The surfactant and releasing agent are using being preceding first dissolved in solvent, and added in powder by Sprayable.

The steel band sorting molding granulation refers to is sent to distributing device by wax liquor B, and distributing device temperature is 100 DEG C, and passes through steel band Sorting is molded, and steel band linear velocity is 4~5m/min;It is dripped using cold wind or cold water cooling wax, is cold front heavy rain above steel band, temperature Less than 20 DEG C, water cooling is 2 sections of coolings in steel band transmit process, and leading portion cooling water is room temperature cooling water, and rear is less than 10 DEG C Cooling water cooling, particle wax is obtained in collector.

The mechanical low-temperature Freezing smashing method, technique are:Temperature is -50 DEG C~-130 DEG C, mechanical crushing, and screening obtains Powder.

The present invention has that hardness is moderate, fusing point for selective laser sintering 3D printing hot investment casting wax-pattern dusty material It is low, that shrinking percentage is low etc. is specific, can be applied in 3D printing, when 3D printing, reunites and the phenomenon that Electrostatic Absorption is few, suitable various general The preparation of logical and labyrinth thin-wall construction precision casting wax pattern.

The present invention is had the following advantages and advantageous effect relative to the prior art:

Oil wax stock stabilization is easy to get, and the present invention greatly reduces the cost of printing wax powder material using pertroleum wax as raw material, Increase toughness, ductility and intensity by adding lignite wax, beeswax, addition resin, PE waxes simultaneously, burnt in selective laser Knot 3D printing wax powder field belongs to pioneering.

The dusty material agglutinating property of selective laser sintering 3D printing hot investment casting wax-pattern prepared by the present invention is good, molding is excellent It is good, release property is good, good stability of the dimension, molding casting wax mould are high-quality, be advantageously implemented 3D printing hot investment casting wax-pattern.

Hot investment casting 3D printing wax powder end mould material prepared by the present invention can be used for the macromolecule of laser sintering and moulding compared with other Material is compared, and agglutinating property is more preferable, and without giving heat, while material movement viscosity is low, can repeatedly use, and environment compatibility is good, The cast model of high quality can directly, be fast and accurately made, simplifies wax-pattern manufacturing process, shortens the period, improves working efficiency, Cost is reduced, has a vast market prospect and the market competitiveness.

Specific embodiment

With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.

Material involved in the following example can be obtained from commercial channel.

Embodiment 1

Mass parts meter is put into 70# microwaxes, beeswax, lignite wax in reaction kettle according to 55 parts, 5 parts, 9 parts of amount, 90 DEG C heating stirring is all melted to wax, is then separately added into 4.5 parts of PE waxes 3 times in batches in heating stirring, 17 parts of C5 add hydrogen stone Oleoresin, 3 parts of APAO, 5 parts of EVA resins, 1 part of stearic acid, 0.5 part of acrylate copolymer, are heated with stirring to all organic matters Melting continues heating stirring 1h.Then wax liquor is transported to granulation distributing device, distributing device temperature is 100 DEG C, conveys cooling steel band Speed is 4.5m/min, and cooling wind temperature is 15 DEG C, and leading portion cooling water is room temperature, and rear end cooling water is 8 DEG C, is obtained in collector Wax powder base-material.Above-mentioned wax material is cooled to -80 DEG C, then mechanical crushing processing, sub-sieve, obtain wax powder base-material.

Above-mentioned wax powder base-material is placed in double-cone mixer, according to wax powder base-material:Neopelex:Zinc stearate =1000:3.2:1.6 ratio adds in neopelex and zinc stearate using spraying apparatus, is finally dried in vacuo, Obtain wax powder base-material.

By in above-mentioned wax powder double-cone mixer, octadecyl front three is separately added into the 5 ‰ of wax powder amount, 5 ‰, 3 ‰, 1% Ammonium chloride, antioxidant 1010, ultraviolet absorbent uv-9 and ball-shaped silicon micro powder are uniformly mixed, hot investment casting are obtained after screening 3D printing wax powder end mould material.

Embodiment 2

Mass parts meter puts into 58# paraffin, beeswax, lignite wax in reaction kettle according to 54 parts, 12 parts, 11 parts of amount, 100 DEG C of heating stirrings are all melted to wax, are then separately added into 5 parts of PE waxes 3 times in batches in heating stirring, 25 parts of C5 add hydrogen stone Oleoresin, 3.5 parts of APAO, 5.5 parts of EVA resins, 1 part of low-molecular polypropylene, 5.5 parts of stearic acid, 0.5 part of acrylic ester copolymer Object is heated with stirring to all organic matter meltings, continues heating stirring 1h.Then wax liquor is transported to granulation distributing device, distributing device Temperature is 100 DEG C, and conveying cooling steel band speed is 4.5m/min, and cooling wind temperature is 15 DEG C, and leading portion cooling water is room temperature, rear end Cooling water is 8 DEG C, and wax powder base-material is arrived in collector.

Above-mentioned wax material is cooled to -110 DEG C, then mechanical crushing processing, sub-sieve, obtain wax powder base-material.

Above-mentioned wax powder base-material is placed in double-cone mixer, according to wax powder base-material:Neopelex:Zinc stearate =1000:3:2 ratio adds in neopelex and stearic acid using spraying apparatus, is finally dried in vacuo, obtains wax Powder.

By in above-mentioned wax powder double-cone mixer, octadecyl front three is separately added into the 5 ‰ of wax powder amount, 5 ‰, 3 ‰, 1% Ammonium chloride, antioxidant 1010, ultraviolet absorbent uv-9 and ball-shaped silicon micro powder are uniformly mixed, hot investment casting are obtained after screening 3D printing wax powder end mould material.

Embodiment 3

70# microwaxes, 58# paraffin, lignite wax are put into reaction by mass parts meter according to 30 parts, 30 parts, 8.5 parts of amount In kettle, heating stirring to wax all melts, and is then separately added into 4 parts of PE waxes 3 times in batches in heating stirring, 17 parts of C5 add hydrogen stone Oleoresin, 3.5 parts of APAO, 5.5 parts of EVA resins, 1 part of stearic acid, 0.5 part of acrylate copolymer, being heated with stirring to all has Machine object melts, and continues heating stirring 1h.Then wax liquor is transported to granulation distributing device, distributing device temperature is 100 DEG C, conveying cooling Steel band speed is 4.5m/min, and cooling wind temperature is 15 DEG C, and leading portion cooling water is room temperature, and rear end cooling water is 8 DEG C, in collector To wax powder base-material.Above-mentioned wax material is cooled to -110 DEG C, then mechanical crushing processing, sub-sieve, obtain wax powder base-material.

Above-mentioned wax powder base-material is placed in double-cone mixer, according to wax powder base-material:Neopelex:Zinc stearate =1000:3.5:2.5 ratio adds in neopelex and stearic acid using spraying apparatus, is finally dried in vacuo, obtains To wax powder base-material.

By in above-mentioned wax powder double-cone mixer, octadecyl front three is separately added into the 5 ‰ of wax powder amount, 5 ‰, 3 ‰, 1% Ammonium chloride, antioxidant 1010, ultraviolet absorbent uv-9 and ball-shaped silicon micro powder are uniformly mixed, hot investment casting are obtained after screening 3D printing wax powder end mould material.

Embodiment 4

Mass parts meter, by 70# microwaxes, 58# paraffin, beeswax, lignite wax according to 25 parts, 25 parts, 10 parts, 9.5 parts of amount Put into reaction kettle, heating stirring to wax all melts, be then separately added into for 3 times in batches in heating stirring 4 parts of PE waxes, 19.5 parts of C5 hydrogenated petroleum resins, 5.5 parts of EVA resins, 2 parts of stearic acid, 0.5 part of acrylate copolymer, are heated with stirring to institute There is organic matter melting, continue heating stirring 1h.Then wax liquor is transported to granulation distributing device, distributing device temperature is 100 DEG C, conveying Cooling steel band speed is 4.5m/min, and cooling wind temperature is 15 DEG C, and leading portion cooling water is room temperature, and rear end cooling water is 8 DEG C, rewinding Wax powder base-material is arrived in device.Above-mentioned wax material is cooled to -115 DEG C, then mechanical crushing processing, sub-sieve, obtain wax powder base-material.

Above-mentioned wax powder base-material is placed in double-cone mixer, according to wax powder base-material:Neopelex:Zinc stearate =1000:3.5:4.5 ratio adds in neopelex and stearic acid using spraying apparatus, is finally dried in vacuo, obtains To wax powder.

By in above-mentioned wax powder double-cone mixer, octadecane is separately added into the 4.5 ‰ of wax powder amount, 5 ‰, 3.5 ‰, 0.8% Base trimethyl ammonium chloride, antioxidant 1010, ultraviolet absorbent uv-9 and ball-shaped silicon micro powder are uniformly mixed, essence are obtained after screening Close casting 3D printing wax powder end mould material.

Embodiment 5

70# microwaxes, 58# paraffin, beeswax are put into reaction kettle by mass parts meter according to 39 parts, 32 parts, 10 parts of amount In, heating stirring to wax all melts, and is then separately added into 5 parts of PE waxes, 3.5 parts of APAO, 5.5 3 times in batches in heating stirring Part EVA resin, 1 part of stearic acid, 0.5 part of acrylate copolymer are heated with stirring to all organic matters meltings, continue heating stirring 1h.Then wax liquor is transported to granulation distributing device, distributing device temperature is 100 DEG C, and conveying cooling steel band speed is 4.5m/min, cold But air temperature is 15 DEG C, and leading portion cooling water is room temperature, and rear end cooling water is 8 DEG C, and wax powder base-material is arrived in collector.

Above-mentioned wax material is cooled to -120 DEG C, then mechanical crushing processing, sub-sieve, obtain wax powder base-material.

Above-mentioned wax powder base-material is placed in double-cone mixer, according to wax powder base-material:Neopelex:Zinc stearate =1000:5.5:2.5 ratio adds in neopelex and stearic acid using spraying apparatus, is finally dried in vacuo, obtains To wax powder base-material.

By in above-mentioned wax powder double-cone mixer, octadecyl is separately added into the 5 ‰ of wax powder amount, 5 ‰, 3.5 ‰, 0.7% Trimethyl ammonium chloride, antioxidant 1010, ultraviolet absorbent uv-9 and ball-shaped silicon micro powder are uniformly mixed, precision are obtained after screening Cast 3D printing wax powder end mould material.

Embodiment 6

Mass parts meter puts into 58# paraffin, beeswax, lignite wax in reaction kettle according to 30 parts, 20 parts, 20 parts of amount, 100 DEG C of heating stirrings are all melted to wax, are then separately added into 10 parts of PE waxes 3 times in batches in heating stirring, 30 parts of C5 add hydrogen Petropols, 6 parts of APAO, 6 parts of EVA resins, 2 parts of low-molecular polypropylenes, 10 parts of stearic acid, 5 parts of acrylate copolymers, stirring All organic matter meltings are heated to, continue heating stirring 1h.Then wax liquor is transported to granulation distributing device, distributing device temperature is 100 DEG C, conveying cooling steel band speed is 4.5m/min, and cooling wind temperature is 15 DEG C, and leading portion cooling water is room temperature, rear end cooling water It is 8 DEG C, wax powder base-material is arrived in collector.

Above-mentioned wax material is cooled to -110 DEG C, then mechanical crushing processing, sub-sieve, obtain wax powder base-material.

Above-mentioned wax powder base-material is placed in double-cone mixer, according to wax powder base-material:Neopelex:Zinc stearate =1000:3:2 ratio adds in neopelex and stearic acid using spraying apparatus, is finally dried in vacuo, obtains wax Powder.

By in above-mentioned wax powder double-cone mixer, it is separately added into the 5 ‰ of wax powder amount, 5 ‰, 3 ‰, 10% into octadecyl three Ammonio methacrylate, antioxidant 1010, ultraviolet absorbent uv-9 and ball-shaped silicon micro powder are uniformly mixed, accurate casting are obtained after screening Make 3D printing wax powder end mould material.

Embodiment 7

Mass parts meter puts into 58# paraffin, beeswax, lignite wax in reaction kettle according to 70 parts, 15 parts, 15 parts of amount, 100 DEG C of heating stirrings are all melted to wax, are then separately added into 7 parts of PE waxes 3 times in batches in heating stirring, 22 parts of C5 add hydrogen stone Oleoresin, 4 parts of APAO, 5 parts of EVA resins, 1 part of low-molecular polypropylene, 7 parts of stearic acid, 2 parts of acrylate copolymers, stirring add Heat to all organic matters melt, and continue heating stirring 1h.Then wax liquor is transported to granulation distributing device, distributing device temperature is 100 DEG C, conveying cooling steel band speed is 4.5m/min, and cooling wind temperature is 15 DEG C, and leading portion cooling water is room temperature, and rear end cooling water is 8 DEG C, arrive wax powder base-material in collector.

Above-mentioned wax material is cooled to -110 DEG C, then mechanical crushing processing, sub-sieve, obtain wax powder base-material.

Above-mentioned wax powder base-material is placed in double-cone mixer, according to wax powder base-material:Neopelex:Zinc stearate =1000:3:2 ratio adds in neopelex and stearic acid using spraying apparatus, is finally dried in vacuo, obtains wax Powder.

By in above-mentioned wax powder double-cone mixer, it is separately added into the 5 ‰ of wax powder amount, 5 ‰, 3 ‰, 5% into octadecyl three Ammonio methacrylate, antioxidant 1010, ultraviolet absorbent uv-9 and ball-shaped silicon micro powder are uniformly mixed, accurate casting are obtained after screening Make 3D printing wax powder end mould material.

The hot investment casting 3D printing wax powder end mould material that the invention described above is prepared is tested, the present invention is used to select The laser sintered 3D printing hot investment casting wax-pattern dusty material of selecting property is applied in 3D printing, detects its hardness and shrinking percentage etc., main Want performance indicator as follows:

The performance of 1 hot investment casting 3D printing wax powder end mould material of table

Appearance Granularity/mesh Fusing point/DEG C Hardness Cure shrinkage/% Embodiment 1 Grey powder 80~140 60~120 0.02~0.05 1.0~2.5 Embodiment 2 Grey powder 80~140 60~120 0.02~0.05 1.0~2.5 Embodiment 3 Grey powder 80~140 60~120 0.02~0.05 1.0~2.5 Embodiment 4 Grey powder 80~140 60~120 0.02~0.05 1.0~2.5 Embodiment 5 White powder 80~140 60~120 0.02~0.05 1.0~2.5 Embodiment 6 Grey powder 80~140 60~120 0.02~0.05 1.0~2.5 Embodiment 7 Grey powder 80~140 60~120 0.02~0.05 1.0~2.5

It can be seen that the present invention fits for selective laser sintering 3D printing hot investment casting wax-pattern dusty material with hardness In, that fusing point is low, shrinking percentage is low etc. is specific, can be applied in 3D printing, when 3D printing, reunites and the phenomenon that Electrostatic Absorption is few, suitable The preparation of various common and labyrinth thin-wall construction precision casting wax patterns.

Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.

Claims (10)

1. one kind is used for selective laser sintering 3D printing hot investment casting wax-pattern dusty material, it is characterised in that including following quality The component of meter:30~80 parts of pertroleum wax;0~10 part of beeswax;0~10 part of lignite wax;0~5 part of PE waxes;Add 0~20 part of resin; 3~10 parts of toughener;0.5~5 part of stearic acid;0.2~5 part of levelling agent;Surfactant 1~10 ‰;Releasing agent 1 ‰~ 10‰;Antistatic agent 0 ‰~5 ‰;Ultra-violet absorber 0~5 ‰;Antioxidant 0~10 ‰;Inorganic filler 0~10%;
Or include the component of following quality meter:20~70 parts of pertroleum wax;10~20 parts of beeswax;10~20 parts of lignite wax;PE waxes 5~ 10 parts;Add 20~30 parts of resin;10~20 parts of toughener;5~10 parts of stearic acid;0.2~5 part of levelling agent;Surfactant 1 ~10 ‰;Releasing agent 1 ‰~10 ‰;Antistatic agent 0 ‰~5 ‰;Ultra-violet absorber 0~5 ‰;Antioxidant 0~10 ‰;It is inorganic Filler 0~10%.
It is 2. according to claim 1 for selective laser sintering 3D printing hot investment casting wax-pattern dusty material, feature It is:The pertroleum wax is 70# microwaxes, 80# microwaxes, 85# microwaxes, 682# microwaxes, 54# fully refined paraffin wax, 58# Fully refined paraffin wax, 62# fully refined paraffin wax, 62# semi-refined paraffin waxs, 64# fully refined paraffin wax, 64# semi-refined paraffin waxs, 66# full refinings One or more in paraffin, 66# semi-refined paraffin waxs.
It is 3. according to claim 1 for selective laser sintering 3D printing hot investment casting wax-pattern dusty material, feature It is:The addition resin is C5 Petropols, C5 hydrogenated petroleum resins, C9 Petropols, C9 hydrogenated petroleum resins, terpenes tree One or more in fat, chlorinated aromatic Petropols, rosin resin.
It is 4. according to claim 1 for selective laser sintering 3D printing hot investment casting wax-pattern dusty material, feature It is:The toughener is APAO, low molecular polyethylene, low-molecular polypropylene, polyisobutene, ethylene-propylene copolymer, second Base cellulose, EVA, haloflex, styrene-butadiene thermoplastic elastomer (TPE), ethylene propylene diene rubber, ethylene-octene are embedding One or more in section copolymer.
It is 5. according to claim 1 for selective laser sintering 3D printing hot investment casting wax-pattern dusty material, feature It is:The levelling agent is acrylate copolymer;The surfactant for neopelex, sodium sulfonate, One kind in dioctyl succinate disulfonate acid, alkyl ether carboxy acid salt, alkyl trimethyl ammonium salt, alkyl dimethyl benzyl ammonium salt or one Kind or more;The releasing agent is zinc stearate;The antistatic agent is stearamide propyl-β-carboxyethyl-dimethyl phosphorus Acid dihydride ammonium, ECH antistatic agents, octadecyltrimethylammonium chloride, one kind in octadecyldimethyl quaternary ammonium nitrate or More than one;The antioxidant is antioxidant 1010, in antioxidant 264, antioxidant 1076, irgasfos 168, antioxidant 300 One or more;The ultra-violet absorber is ultra-violet absorber uv531, ultraviolet absorbent uv-9, ultraviolet One or more in light absorbers 770;The inorganic filler is silicon powder, nano-calcium carbonate, nanometer Al2O3In It is one or more kinds of.
6. a kind of Claims 1 to 5 any one of them is used for selective laser sintering 3D printing hot investment casting wax-pattern powder material The preparation method of material, it is characterised in that include the following steps:Pertroleum wax, beeswax, lignite wax are mixed, 90~100 DEG C of heating are stirred Thawing is mixed, obtains wax liquor A;Stirring adds in PE waxes, addition resin, toughener, stearic acid, levelling agent, continues heating stirring 30min ~1h obtains wax liquor B;Cooling, crushing or steel band sorting molding granulation, obtain base wax C;Base wax C is freezed by mechanical low-temperature Comminuting method makes powder, and stirring adds in surfactant and releasing agent, and vacuum drying obtains wax powder base-material D;Base-material D is added to bipyramid In mixing machine, antistatic agent, ultra-violet absorber, antioxidant, inorganic filler are added in, is uniformly mixed, obtains swashing for selectivity Light is sintered 3D printing hot investment casting wax-pattern dusty material.
7. the preparation side according to claim 6 for selective laser sintering 3D printing hot investment casting wax-pattern dusty material Method, it is characterised in that:The surfactant and releasing agent are using being preceding first dissolved in solvent, and pass through Sprayable and add in powder In.
8. the preparation side according to claim 6 for selective laser sintering 3D printing hot investment casting wax-pattern dusty material Method, it is characterised in that:The steel band sorting molding granulation refers to is sent to distributing device by wax liquor B, and distributing device temperature is 100 DEG C, and is led to Steel band sorting molding is crossed, steel band linear velocity is 4~5m/min;It is cold for cold wind above steel band using cold wind or cold water cooling wax drop But, temperature is less than or equal to 20 DEG C, and water cooling is 2 sections of coolings in steel band transmit process, and leading portion cooling water is room temperature cooling water, rear To be less than or equal to 10 DEG C of cooling water cooling, particle wax is obtained in collector.
9. the preparation side according to claim 6 for selective laser sintering 3D printing hot investment casting wax-pattern dusty material Method, it is characterised in that:The mechanical low-temperature Freezing smashing method, technique are:Temperature is -50 DEG C~-130 DEG C, mechanical crushing, sieve Point, obtain powder.
10. Claims 1 to 5 any one of them exists for selective laser sintering 3D printing hot investment casting wax-pattern dusty material Application in 3D printing.
CN201711483877.0A 2017-12-29 2017-12-29 One kind is for selective laser sintering 3D printing hot investment casting wax-pattern dusty material and preparation method and application CN108165028A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1326828A (en) * 2001-05-15 2001-12-19 北京北方恒利科技发展有限公司 Low melting point powder material for laser sintering fast forming precisely casting wax mold
JP3759417B2 (en) * 2001-03-07 2006-03-22 株式会社荏原製作所 Polystyrene powder used for three-dimensional shapes produced by selective laser sintering
CN1765994A (en) * 2004-10-29 2006-05-03 中国石油化工股份有限公司 Grinding material for precision casting
CN101074320A (en) * 2006-05-19 2007-11-21 中国石油化工股份有限公司 Precisive ornament casting moulding material
DE19853814B4 (en) * 1998-11-21 2008-01-31 Ederer, Ingo, Dr. Method for producing components by application technology
CN104629161A (en) * 2015-03-04 2015-05-20 中国科学院福建物质结构研究所 Low-melting-point 3D printing material and preparation method thereof
CN105436406A (en) * 2015-12-01 2016-03-30 华中科技大学无锡研究院 Precision lost wax casting technology based on selective laser powder sintering 3D printing
CN106280502A (en) * 2016-08-18 2017-01-04 娄土岭 A kind of precision-investment casting blended wax mould material
CN106366672A (en) * 2016-08-31 2017-02-01 浙江闪铸三维科技有限公司 Material for manufacturing three dimensional object using 3D printing technology and preparation method thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853814B4 (en) * 1998-11-21 2008-01-31 Ederer, Ingo, Dr. Method for producing components by application technology
JP3759417B2 (en) * 2001-03-07 2006-03-22 株式会社荏原製作所 Polystyrene powder used for three-dimensional shapes produced by selective laser sintering
CN1326828A (en) * 2001-05-15 2001-12-19 北京北方恒利科技发展有限公司 Low melting point powder material for laser sintering fast forming precisely casting wax mold
CN1765994A (en) * 2004-10-29 2006-05-03 中国石油化工股份有限公司 Grinding material for precision casting
CN101074320A (en) * 2006-05-19 2007-11-21 中国石油化工股份有限公司 Precisive ornament casting moulding material
CN104629161A (en) * 2015-03-04 2015-05-20 中国科学院福建物质结构研究所 Low-melting-point 3D printing material and preparation method thereof
CN105436406A (en) * 2015-12-01 2016-03-30 华中科技大学无锡研究院 Precision lost wax casting technology based on selective laser powder sintering 3D printing
CN106280502A (en) * 2016-08-18 2017-01-04 娄土岭 A kind of precision-investment casting blended wax mould material
CN106366672A (en) * 2016-08-31 2017-02-01 浙江闪铸三维科技有限公司 Material for manufacturing three dimensional object using 3D printing technology and preparation method thereof

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