CN109365811A - A kind of method of selective laser melting process forming Zinc-alloy - Google Patents

A kind of method of selective laser melting process forming Zinc-alloy Download PDF

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CN109365811A
CN109365811A CN201811425269.9A CN201811425269A CN109365811A CN 109365811 A CN109365811 A CN 109365811A CN 201811425269 A CN201811425269 A CN 201811425269A CN 109365811 A CN109365811 A CN 109365811A
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zinc
alloy
laser
melting process
laser melting
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CN109365811B (en
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何新波
马成龙
曹顺利
曲选辉
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Guangzhou Research Institute Of New Materials University Of Science And Technology Beijing
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Guangzhou Research Institute Of New Materials University Of Science And Technology Beijing
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40—Radiation means
    • B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/052—Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/68—Cleaning or washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/80—Data acquisition or data processing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE 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
    • B33Y10/00—Processes of additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/16—Polishing
    • C25F3/22—Polishing of heavy metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
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    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

The present invention relates to field of material preparation, provide a kind of method of selective laser melting process forming Zinc-alloy.The following steps are included: the 3 d structure model of molded article needed for constructing first, handles in importing printing-forming equipment computer by 3D printing software for editing and carries out print out task；Set the working process parameter of Zinc alloy powder laser melting systems；Print preparation: examination powdering, inspection airflow circulating system, inspection parameter setting etc.；Powder rapid melting and solidification under the protection of inert atmosphere, layer-by-layer stack shaping product.This method selectes specific kirsite ingredient and its specifications parameter, by optimization processing technology parameter, can obtain quality stabilization, the Zinc-alloy with excellent mechanical property and surface smoothness.This method considerably simplifies technological process, and for the kirsite of selective laser melting process preparation high-precision labyrinth, especially forming small lot personalized customization zinc alloy piece possesses incomparable advantage.

Description

A kind of method of selective laser melting process forming Zinc-alloy
Technical field
The present invention relates to field of material preparation, especially a kind of to use selective laser melting process Quick-forming kirsite system The method of product.
Background technique
Recently as the universal of copper alloy application, there is international copper resource anxiety, the price of copper raw material is caused to get over Come more expensive, therefore accelerated development copper and copper alloy alternative materials become numerous researchers and production to meet modern industry needs The common recognition of industry.Kirsite since resourceful, fusing point is low, good mechanical performance, the prices of raw materials are cheap, relative density is low, The advantages that damping, coefficient of friction be low, no-spark, Cutting free, and kirsite has good casting character, and casting cost is about It is the 40%~60% of copper alloy, by deformation and heat treatment, performance is similar with brass, so that kirsite becomes most excellent Copper alloy alternative materials.
Manufacturing industry is all the industry to play a crucial role to national economy for any one country.New manufacturing process Use, along with the development and progress of manufacturing technology.With the development of science and technology, 3D printing technique enters the view of people Open country is removed relative to traditional material --- and Machining Technology for Cutting is the manufacturing method of a kind of " from bottom to top ".With traditional Mill, cut, forging and electric machining manufacturing method, to shape some single and mini-batch productions, there are complex process, manufacture for complex-shaped part The problems such as development cycle is long, waste of material is serious, causes the increase of manufacturing cost.3D printing technique is very suitable to manufacture this multiple Miscellaneous, small lot part has the characteristics of simple process, high comprehensive performance, cost is relatively low.3D printing technique can also be big It is big to save production piece Production Time, the service efficiency of raw material and the energy is improved, the influence to environment is reduced, life is greatly reduced Produce cost, moreover it is possible to make consumer's customized product according to their own needs, may also speed up the research and development of new product, especially right and wrong The product development of normal labyrinth, and solve the problems, such as that conventional method can not process.Wherein precinct laser fusion (Selective Laser Melting, SLM) technology is most potential one of the technology in rapid prototyping manufacturing field.The technology is based on increasing material system Make principle, using metal powder under the heat effect of laser beam it is quick and complete fusing, through be quickly cooled down solidify and form, can be direct Form high-performance, the high-precision metal product of arbitrarily complicated shape.Under the effect of high laser energy density, metal powder is completely molten Change, can be achieved to shape with the soldering of solid metal metallurgy after cooling, SLM technology is exactly based on this process, is accumulated as layer by layer Shape goes out the rapid prototyping technology of 3D solid.
The successful case for successfully preparing kirsite product currently with SLM technology is fresh it has been reported that mainly due to zinc Alloy melting point is low, low boiling point (about 900 DEG C), the generation sputtered in laser melting process with a large amount of steam and particle, The performance of kirsite product is seriously affected, it is low that there are consistency, and surface roughness is poor or even product is finally shapeless, this is system About the biggest factor of kirsite selective laser melting process development.For the defect and SLM skill of existing conventional cast kirsite Art shapes the problems such as technical difficulty of kirsite, it is necessary to explore a kind of selective laser melting process forming Zinc-alloy Process, to expand the preparation for processing of Zinc-alloy, particularly with forming small lot personalized customization zinc alloy piece, And low melting point low boiling point metal and its alloy are shaped with reference to selective laser melting process.
Summary of the invention
The purpose of the present invention is to provide a kind of methods using selective laser melting process forming Zinc-alloy, enrich The diversity of Zinc-alloy preparation method develops the potentiality of selective laser melting process forming kirsite.The present invention is logical Crossing single factor test control methods, gradually induction and conclusion goes out suitable process parameters range, has shaped the kirsite entity of high-compactness.
A kind of method of selective laser melting process forming Zinc-alloy, tool are provided in an embodiment of the present invention Body technology step and parameter are as follows:
(a) model construction: using molded article needed for 3D modeling software building 3 d structure model and be converted into .stl Formatted file output, is then handled model and is saved as through 3D printing software for editing .slm formatted file, finally imported Computer control system to precinct laser fusion former carries out print out task.
(b) powder characteristics: Zinc alloy powder ZnAl12, Zinc alloy powder ZnAl12, it is 15.32 that powder size, which is distributed D10, μm, D50 is 33.87 μm, and D90 is 59.87 μm；The mobility of Zinc alloy powder is 35.02/50g, and apparent density is 3.02g/ cm3, oxygen content is 0.33%.
(c) working chamber prepares: Zinc-alloy is printed using precinct laser fusion former, before starting print out task, It is prepared work.Then examination powdering first wipes laser lens until thin layer metal powder, start to vacuumize and to adding Work is intracavitary to be passed through inert atmosphere, until oxygen content is lower than 0.05%, while needing basal plate preheating to certain temperature.
(d) laser fusing forming: laser is according to previously designed scanning strategy, according to the working process parameter of setting, The Zinc alloy powder being laid in advance is melted, the level of a part is obtained by rapid melting and solidification, with metacoxal plate decline one The distance of a setting thick degree of machined layer, the powdering again on solidified superalloy layer, laser scan the powder of laying again, and every layer It only needs to carry out a laser scanning, obtains smooth alloy melting layer.
(e) repeats step (d), block size and shape until being reached design by the Zinc alloy powder of laser scanning.
(f) cuts down SLM kirsite drip molding from substrate, carry out sandblasting, cleaning, polishing can be obtained it is required The Zinc-alloy of structure.
Preferably, in step (a), it is described through 3D printing software for editing to model carry out processing be modal position put, Add necessary support, technological parameter importing and slicing treatment.
Preferably, in step (a), the model SLMsolutions125HL of the precinct laser fusion former.
Preferably, in step (c), the inert gas is argon gas.
Preferably, in step (c), the basal plate preheating temperature is 100 DEG C -150 DEG C.
Preferably, in step (d), the laser is IPG company optical fiber laser, maximum power 400W, wavelength 1065~1075nm, 75 μm of spot diameter.
Preferably, in step (d), the laser scanning strategy is the scanning of interlayer misplacement.
Preferably, in step (d), the working process parameter be 15~45W of laser power, scanning speed 60~ 300mm/s, 40~100 μm of sweep span, 30~60 μm of powdering thickness.
Preferably, in step (f), the sand-blasting machine model PM620S sand-blasting machine.
Preferably, in step (f), the cleaning is ultrasonic cleaning, and cleansing medium is dehydrated alcohol, and scavenging period is 5~10min.
Preferably, described to be finished to electrobrightening in step (f), electrolytic polishing liquid ingredient is phosphoric acid and ethyl alcohol, electric current Density is 0.02~0.03A/cm2, DC voltage < 1V, 12~20min of time.
The present invention has the advantages that this method selectes specific kirsite ingredient and its specifications parameter, processed by optimization Technological parameter can obtain quality stabilization, the Zinc-alloy with excellent mechanical property and surface smoothness.This method exists Technological process is greatlied simplify, and the zinc of selective laser melting process preparation high-precision labyrinth is closed Gold, especially forming small lot personalized customization zinc alloy piece possess incomparable advantage.
Specific embodiment
Below by specific case study on implementation, the present invention will be further described.
Embodiment one
(a) Zinc alloy powder is ZnAl12, and it is 15.32 μm that powder size, which is distributed D10, and D50 is 33.87 μm, D90 59.87 μm；The mobility of Zinc alloy powder is 35.02/50g, and apparent density is 3.02g/cm3, oxygen content is 0.33%.
(b) uses 10 × 10 × 10mm of 3D modeling software building3Square 3 d structure model and be converted into .stl lattice The output of formula file, is then handled model and is saved as through 3D printing software for editing .slm formatted file, finally imported into The computer control system of SLM former carries out print out task.
(c) before starts print out task, it is prepared work.Examination powdering is until thin layer metal powder, is then wiped first Wipe laser lens, start to vacuumize and be passed through into processing cavity inert atmosphere, until oxygen content be lower than 0.05%, while need by Basal plate preheating is to certain temperature.Since kirsite fusing point and boiling point are lower, be often accompanied by laser melting process zinc fume and The generation of grain sputtering has seriously affected the final performance of drip molding, therefore the airflow circulating system control in entire forming process It is particularly important.
(d) laser is melted and is laid in advance according to the working process parameter of setting according to previously designed scanning strategy Zinc alloy powder, by rapid melting and solidification obtain the level of a part, with metacoxal plate decline a setting machined layer The distance of thick degree, powdering, laser scan the powder of laying again again on solidified superalloy layer, and every layer only needs to carry out one Secondary laser scanning obtains smooth alloy melting layer.The technological parameter wherein set as 75 μm of spot diameter, laser power 20W, Scanning speed 250mm/s, 60 μm of sweep span, 30 μm of powdering thickness, energy density E=44.44J/mm3。
(e) repeats step (d), block size and shape until being reached design by the Zinc alloy powder of laser scanning, will SLM kirsite drip molding is cut down from substrate, the Zinc-alloy shaped.
Under this working process parameter, Zinc-alloy consistency obtained is 91.9%, and surface quality is excellent, without bright Aobvious crackle and hole, and forming accuracy is high, reaches 0.03mm, while having excellent mechanical property.
Embodiment two
(a) Zinc alloy powder is ZnAl12, and it is 15.32 μm that powder size, which is distributed D10, and D50 is 33.87 μm, D90 59.87 μm；The mobility of Zinc alloy powder is 35.02/50g, and apparent density is 3.02g/cm3, oxygen content is 0.33%.
(b) uses 10 × 10 × 10mm of 3D modeling software building3Square 3 d structure model and be converted into .stl lattice The output of formula file, is then handled model and is saved as through 3D printing software for editing .slm formatted file, finally imported into The computer control system of SLM former carries out print out task.
(c) before starts print out task, it is prepared work.Examination powdering is until thin layer metal powder, is then wiped first Wipe laser lens, start to vacuumize and be passed through into processing cavity inert atmosphere, until oxygen content be lower than 0.05%, while need by Basal plate preheating is to certain temperature.Since kirsite fusing point and boiling point are lower, be often accompanied by laser melting process zinc fume and The generation of grain sputtering has seriously affected the final performance of drip molding, therefore the airflow circulating system control in entire forming process It is particularly important.
(d) laser is melted and is laid in advance according to the working process parameter of setting according to previously designed scanning strategy Zinc alloy powder, by rapid melting and solidification obtain the level of a part, with metacoxal plate decline a setting machined layer The distance of thick degree, powdering, laser scan the powder of laying again again on solidified superalloy layer, and every layer only needs to carry out one Secondary laser scanning obtains smooth alloy melting layer.The technological parameter wherein set as 75 μm of spot diameter, laser power 25W, Scanning speed 300mm/s, 60 μm of sweep span, 30 μm of powdering thickness, energy density E=46.3J/mm3。
(e) repeats step (d), block size and shape until being reached design by the Zinc alloy powder of laser scanning, will SLM kirsite drip molding is cut down from substrate, the Zinc-alloy shaped.
Under this working process parameter, Zinc-alloy consistency obtained is 92.8%, and surface quality is excellent, without bright Aobvious crackle and hole, forming accuracy 0.12mm, while there is excellent mechanical property.
Embodiment three
(a) Zinc alloy powder is ZnAl12, and it is 15.32 μm that powder size, which is distributed D10, and D50 is 33.87 μm, D90 59.87 μm；The mobility of Zinc alloy powder is 35.02/50g, and apparent density is 3.02g/cm3, oxygen content is 0.33%.
(b) uses 10 × 10 × 10mm of 3D modeling software building3Square 3 d structure model and be converted into .stl lattice The output of formula file, is then handled model and is saved as through 3D printing software for editing .slm formatted file, finally imported into The computer control system of SLM former carries out print out task.
(c) before starts print out task, it is prepared work.Examination powdering is until thin layer metal powder, is then wiped first Wipe laser lens, start to vacuumize and be passed through into processing cavity inert atmosphere, until oxygen content be lower than 0.05%, while need by Basal plate preheating is to certain temperature.Since kirsite fusing point and boiling point are lower, be often accompanied by laser melting process zinc fume and The generation of grain sputtering has seriously affected the final performance of drip molding, therefore the airflow circulating system control in entire forming process It is particularly important.
(d) laser is melted and is laid in advance according to the working process parameter of setting according to previously designed scanning strategy Zinc alloy powder, by rapid melting and solidification obtain the level of a part, with metacoxal plate decline a setting machined layer The distance of thick degree, powdering, laser scan the powder of laying again again on solidified superalloy layer, and every layer only needs to carry out one Secondary laser scanning obtains smooth alloy melting layer.The technological parameter wherein set as 75 μm of spot diameter, laser power 20W, Scanning speed 100mm/s, 80 μm of sweep span, 30 μm of powdering thickness, energy density E=83.33J/mm3。
(e) repeats step (d), block size and shape until being reached design by the Zinc alloy powder of laser scanning, will SLM kirsite drip molding is cut down from substrate, the Zinc-alloy shaped.
Under this working process parameter, Zinc-alloy consistency obtained is 93.7%, and surface quality is excellent, without bright Aobvious crackle and hole, forming accuracy 0.06mm, while there is excellent mechanical property.
The resulting kirsite product of the embodiment of the present invention, by setting specific technological parameter, kirsite product obtained Relatively compact, for forming accuracy in 0.03-0.12mm, surface quality is excellent, flawless, hole and it is loose the defects of, solve zinc The restriction of alloy precinct laser fusion, for the kirsite of selective laser melting process preparation high-precision labyrinth, especially Shaping small lot personalized customization Zinc-alloy has important application value.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks Domain is included within the scope of the present invention.

Claims (11)

1. a kind of method of selective laser melting process forming Zinc-alloy, which is characterized in that the technique of precinct laser fusion Process and specific technological parameter are as follows:
(a) model construction: using molded article needed for 3D modeling software building 3 d structure model and be converted into .stl format File output, then handles model through 3D printing software for editing and saves as .slm formatted file, finally imported into choosing The computer control system that area's laser melts former carries out print out task；
(b) powder characteristics: Zinc alloy powder ZnAl12, it is 15.32 μm that powder size, which is distributed D10, and D50 is 33.87 μm, and D90 is 59.87μm；The mobility of Zinc alloy powder is 35.02/50g, and apparent density is 3.02g/cm3, and oxygen content is 0.33%；
(c) working chamber prepares: printing Zinc-alloy using precinct laser fusion former, before starting print out task, carries out Preparation.Then examination powdering first wipes laser lens until thin layer metal powder, start to vacuumize and to processing cavity It is inside passed through inert atmosphere, until oxygen content is lower than 0.05%, while being needed basal plate preheating to certain temperature；
(d) laser fusing forming: laser is according to previously designed scanning strategy, according to the working process parameter of setting, fusing The Zinc alloy powder being laid in advance obtains the level of a part by rapid melting and solidification, declines one with metacoxal plate and set The distance for determining the thick degree of machined layer, powdering, laser scan the powder of laying again again on solidified superalloy layer, and every layer only needs A laser scanning is carried out, smooth alloy melting layer is obtained；
(e) repeats step (d), block size and shape until being reached design by the Zinc alloy powder of laser scanning；
(f) cuts down SLM kirsite drip molding from substrate, and required structure can be obtained in progress sandblasting, cleaning, polishing Zinc-alloy.
2. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that in step Suddenly in (a), described to carry out processing to model through 3D printing software for editing be that modal position is put, adds necessary support, technique Parameter imports and slicing treatment.
3. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that in step Suddenly in (a), the model SLM solutions125HL of the precinct laser fusion former.
4. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that in step Suddenly in (c), the inert gas is argon gas.
5. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that in step Suddenly in (c), the basal plate preheating temperature is 100 DEG C -150 DEG C.
6. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that in step Suddenly in (d), the laser is IPG company optical fiber laser, and maximum power 400W, 1065~1075nm of wavelength, hot spot is straight Diameter is 75 μm.
7. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that in step Suddenly in (d), the laser scanning strategy is the scanning of interlayer misplacement.
8. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that in step Suddenly in (4), the working process parameter is 15~45W of laser power, 60~300mm/s of scanning speed, sweep span 40~100 μm, 30~60 μm of powdering thickness.
9. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that in step Suddenly in (f), the sand-blasting machine model PM620S sand-blasting machine.
10. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that In step (f), the cleaning is ultrasonic cleaning, and cleansing medium is dehydrated alcohol, and scavenging period is 5~10min.
11. the method for selective laser melting process forming Zinc-alloy according to claim 1, which is characterized in that In step (f), it is described polishing use electrobrightening, electrolytic polishing liquid ingredient be phosphoric acid and ethyl alcohol, current density be 0.02~ 0.03A/cm2, DC voltage < 1V, 12~20min of time.
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Publication number Priority date Publication date Assignee Title
CN109878073A (en) * 2019-03-28 2019-06-14 哈尔滨理工大学 A kind of 3D printer formed precision optimization method
CN110481014A (en) * 2019-08-26 2019-11-22 华南理工大学 A kind of high density polyethylene (HDPE) Complex Different Shape pipe fitting selective laser sintering forming method
CN111014667A (en) * 2019-11-07 2020-04-17 上海汉邦联航激光科技有限公司 Preparation method of throttler
CN112222406A (en) * 2020-09-23 2021-01-15 上海材料研究所 Method for improving surface precision of laser selective melting part on line
CN112632816A (en) * 2020-12-10 2021-04-09 福建工程学院 Design and manufacturing method of porous structure material based on medical implant
CN112795813A (en) * 2021-01-06 2021-05-14 中南大学 Additive manufacturing method of high-hardness zinc alloy die blank
CN114160809A (en) * 2021-11-09 2022-03-11 南京晨光集团有限责任公司 High-power large-layer thickness selective laser melting forming method
CN114346256A (en) * 2021-12-03 2022-04-15 南京联空智能增材研究院有限公司 Variant energy density laser material increase method suitable for high-entropy alloy
CN114346256B (en) * 2021-12-03 2023-12-12 南京联空智能增材研究院有限公司 Variant energy density laser material-increasing method suitable for high-entropy alloy
CN114932218A (en) * 2022-05-30 2022-08-23 暨南大学 Method for reducing evaporation of 3D printing zinc powder to form zinc-silver alloy through chemical silver plating
CN115213424A (en) * 2022-06-17 2022-10-21 广州湘龙高新材料科技股份有限公司 High-elasticity zinc alloy 3D printing method
CN115501386A (en) * 2022-09-28 2022-12-23 北京科技大学 Full-degradable high-toughness bionic gradient composite material and additive manufacturing method thereof
CN117206544A (en) * 2023-11-09 2023-12-12 四川工程职业技术学院 Laser selective melting forming method for Zn-Cu-Mn-Mg alloy porous structure
CN117206544B (en) * 2023-11-09 2024-02-20 四川工程职业技术学院 Laser selective melting forming method for Zn-Cu-Mn-Mg alloy porous structure

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