CN108384938A - A kind of method and apparatus for constraining rolling crystal grain thinning in increasing material manufacturing with the shape - Google Patents
A kind of method and apparatus for constraining rolling crystal grain thinning in increasing material manufacturing with the shape Download PDFInfo
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- CN108384938A CN108384938A CN201710009692.XA CN201710009692A CN108384938A CN 108384938 A CN108384938 A CN 108384938A CN 201710009692 A CN201710009692 A CN 201710009692A CN 108384938 A CN108384938 A CN 108384938A
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- restraining plate
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
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- 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
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- 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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- Crystallography & Structural Chemistry (AREA)
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- Manufacturing & Machinery (AREA)
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Abstract
The present invention provides the method and apparatus for constraining rolling crystal grain thinning in a kind of increasing material manufacturing with the shape, and during melting increasing material manufacturing, cladding layer forming blank is formed using the casual constraint in side with the method for synchronous rolling composite manufacturing.The method and apparatus that the present invention proposes profile-followed constraint rolling increasing material manufacturing, to increasing the semi-solid blank of material process in fusing, using the casual constraint in side and the new process of synchronous rolling composite manufacturing.Continuous rolling effect can be generated in forming process using technique, it can effectively grating Zhi Jing, increase forming core, column crystal/dendrite tendency of increasing material manufacturing component is greatly reduced, side constraint is effectively improved the utilization rate of forming accuracy and material, the implementation of technique may be implemented to stablize increasing material manufacturing to the performance of the more complex part of difficult moulding material, be suitble to apply in the short route of large and medium-sized aerospace component, high-quality, efficient, entirety manufacture.
Description
Technical field
The present invention relates to increases material manufacturing technology fields, and more particularly to being constrained with the shape in a kind of increasing material manufacturing, rolling refinement is brilliant
The method and apparatus of grain.
Background technology
The design of increasing material manufacturing is with manufacturing philosophy increasingly to the trend development that light-weight, the service life is high, at low cost.Traditional
Parts are manufactured, depend on traditional casting, forging, welding method complete, this allows for product and subtracts
Weight is difficult, the period is long, the contradiction runed counter to design concept and cost budgeting such as of high cost, therefore there is an urgent need for developmental researches in view of weighing
The alloy of the multiple constraints such as amount, service life, cost, period, material, technique efficiently designs and manufacturing method and its equipment manufacturing skill
Art.Current plasma arc/electric arc fuse increasing material manufacturing, the increasing material manufacturing of electron beam fuse may be implemented because of production efficiency height
Multiple batches of, small lot the high efficient production of integration of larger component, but the coarse grains in its forming process, anisotropy are bright
The deficiencies of aobvious, is the emphasis of its scientific research institutions and its colleges and universities' research, is had based on the method mainly used at present：Ultrasonic agitation is molten
Chi Fa, magnetoelectricity Collaborative Control come agitation molten pool, micro- casting forging grain refinement etc., although the method for the above crystal grain thinning achieves
Certain effect, but appoint so that there are efficiency is low and the problems such as forming accuracy is low, it is therefore desirable to innovate more effective way
Crystal grain thinning.
Existing fusing increases material manufacturing technology relies primarily on heat source fusing metal and directly manufactures, and product tissue generally is
As cast condition column crystal/dendrite or dendrite and equiax crystal line and staff control, are presented apparent directionality and anisotropy.From grain size
It says, these problems are a lack of under the conditions of crystal grain refinement link, and mobile heat and mass without the free micro- casting deposition forming of constraint
Intrinsic thermodynamics, dynamics, geometry feature determined, it is only still difficult by changing the approach such as material composition and technological parameter
To solve at all.The prior art is the either positive hammering of positive single rolling system, will produce in the fabrication process fur cracking,
The technological problems such as the accuracy of manufacture is not high, rolling is uneven.
Invention content
The present invention provides a kind of sides that fusing increasing material manufacturing process side constraint is synchronized to compound progress with synchronous rolling
Method and device.The present invention is directed to the cladding layer blank during increasing material manufacturing, compound with synchronous rolling using the casual constraint in side
The method of manufacture can improve forming accuracy and stock utilization, improve crystalline rate, crystal grain thinning.
The present invention provides a kind of methods for constraining rolling crystal grain thinning in increasing material manufacturing with the shape, in fusing increasing material manufacturing
Cheng Zhong is formed cladding layer forming blank with the method for synchronous rolling composite manufacturing using the casual constraint in side, passes through side
The casual constraint in side improves forming accuracy and stock utilization, by synchronous rolling grating column crystal/dendrite, increases nucleation rate,
Improve crystalline rate, crystal grain thinning.
Further, the material melting point of the restraining plate used in the casual constraint in side and the roll used in synchronous rolling
Higher than at least 600 DEG C of the fusing point of forming blank, and the intensity and rigid requirements of its rolling need to be met, in forming process restraining plate and
Roll is with increasing material manufacturing campaign advanced in unison.
Further, the restraining plate is symmetricly set on the both sides of forming blank, the top surface of lower face and forming blank
Concordantly, it is highly cladding layer forming blank thickness 1-1.6 times, respectively to the restraining plate of both sides by opposite in forming process
Direction equivalence force.
Further, the roll is arranged between the restraining plate of both sides, and retention gap forms flash between restraining plate
Area, roll fits closely rolling pressure with cladding layer forming blank in forming process, wherein the lower pressure and rolling speed of roll
Degree is determined according to the material of forming blank.
Further, the roll includes first order roll, second level roll and third level roll, and first order roll is used for
Rolling liquid-semi-solid blank, second level roll are used for rolling semi-solid blank, and third level roll is used for offseting flash area.
The method that the present invention proposes profile-followed constraint rolling increasing material manufacturing is adopted to increasing the semi-solid blank of material process in fusing
With the casual constraint in side and the new process of synchronous rolling composite manufacturing.Using technique can in forming process the company of generation
Can effectively grating Zhi Jing, increase forming core column crystal/dendrite of increasing material manufacturing component be greatly reduced in continuous rolling effect
Tendency, side constraint are effectively improved the utilization rate of forming accuracy and material, the implementation of technique, may be implemented to difficulty at
The performance of the more complex part of shape material stablizes increasing material manufacturing, be suitble to large and medium-sized aerospace component short route, it is high-quality, efficient,
It is applied in whole manufacture.
The present invention also provides the devices for constraining rolling crystal grain thinning in a kind of increasing material manufacturing with the shape to include：Restraining plate, institute
It includes left side restraining plate and right side restraining plate to state restraining plate, and the left side restraining plate and right side restraining plate are symmetricly set on forming base
The both sides of material, and its lower face is concordant with the upper surface of forming blank；Roll, roll setting in the left side restraining plate and
Between the restraining plate of right side, between both sides of the face and respective side restraining plate there are gap be flash area, the roll in forming process
Rolling pressure is fitted closely with cladding layer forming blank；Heat source, the heat source are arranged in the top of cladding layer forming blank；Base
Plate, affiliated substrate are arranged on the downside of forming blank, are connected with the bottom surface of forming blank.
Further, the restraining plate and forming blank contact position have an idler wheel, the idler wheel forward position with before restraining plate
The distance between edge is 0.2-0.5 times of roller diameter, and the number of rollers is 2 or 2 or more, between two neighboring idler wheel
Distance be 1.5-5 times of roller diameter, the height of idler wheel is 1-1.2 times of correspondence restraining plate height.
Further, the roll includes first order roll, second level roll and third level roll, the first order roll
The distance between second level roll is equal to the distance between the second level roll and third level roll.
Further, the fusing point of the material of the restraining plate and roll is higher than at least 600 DEG C of the fusing point of forming blank.
Further, the rear and front end of the restraining plate is equipped with pilot unit, and the pilot unit includes being mounted on a left side
The left side restraining plate pilot unit of side restraining plate rear and front end and the right side restraining plate mounted on right side restraining plate rear and front end are led
To unit.
The present invention proposes the device of profile-followed constraint rolling increasing material manufacturing, and the present apparatus is to the semisolid blank in fusing increasing material process
Material is formed using the casual constraint in side with the new process of synchronous rolling composite manufacturing.Using technique can at
Continuous rolling effect is generated during shape, effectively grating Zhi Jing, increase forming core increasing material manufacturing component can be greatly reduced
Column crystal/dendrite tendency, side constraint are effectively improved the utilization rate of forming accuracy and material, the implementation of technique,
It may be implemented to stablize increasing material manufacturing to the performance of the more complex part of difficult moulding material, be suitble to the short stream in large and medium-sized aerospace component
It is applied in journey, high-quality, efficient, entirety manufacture.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Fig. 1 be the embodiment of the present invention a kind of increasing material manufacturing in constrain with the shape rolling crystal grain thinning device structural representation
Figure；
Fig. 2 be the embodiment of the present invention a kind of increasing material manufacturing in constrain with the shape rolling crystal grain thinning device front view；
Fig. 3 be the embodiment of the present invention a kind of increasing material manufacturing in constrain with the shape rolling crystal grain thinning device vertical view.
In attached drawing label for：
1 increasing material manufacturing direction
2 substrates
3 forming blanks
4 left side restraining plates
5 left driving idler wheels
6 third level rolls
7 right driving idler wheels
8 third level roll rotation directions
9 third level roll rotation axis
10 second level rolls
11 second level roll rotation direction
12 second level roll rotation axis
13 first order rolls
14 source center axis
15 first order roll rotation axis
16 first order roll rotation directions
17 right side restraining plates
18 heat sources
19 left side clamping forces
20 right side clamping forces
21 first layer increasing material manufacturing forming blanks
22 second layer increasing material manufacturing forming blanks
23 n-th layer increasing material manufacturing forming blanks
32 left side restraining plate pilot units
The distance between 36 two neighboring idler wheels
The distance between 37 idler wheel forward positions and restraining plate forward position
42 right side restraining plate pilot units.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
A kind of method for constraining rolling crystal grain thinning in increasing material manufacturing with the shape, during melting increasing material manufacturing, to cladding
Layer forming blank is formed using the casual constraint in side with the method for synchronous rolling composite manufacturing, is carried by the casual constraint in side
High forming accuracy and stock utilization increase nucleation rate by synchronous rolling grating column crystal/dendrite, improve crystalline rate,
Crystal grain thinning.Wherein, the material melting point of the restraining plate used in the casual constraint in side and the roll used in synchronous rolling is high
In at least 600 DEG C of the fusing point of forming blank, restraining plate and roll are with increasing material manufacturing campaign advanced in unison in forming process.It is preferred that
Ground, the roll include first order roll, second level roll and third level roll, and it is solid that first order roll is used for rolling liquid-half
State blank, second level roll are used for rolling semi-solid blank, and third level roll is used for offseting flash area.
In the one side of the embodiment of the present invention, the restraining plate is symmetricly set on the both sides of forming blank, lower face
With the either flush of forming blank, highly 1-1.6 times for cladding layer forming blank thickness, respectively to both sides in forming process
Restraining plate by opposite direction equivalence force.
When specific works, roll selects the purpose roll for having rolling single-layer metal arrival grating Zhi Jing and its lower pressure
It completes, left and right restraining plate provides opposite clamping force, and restraining plate can effectively prevent roll milling process metal to crack, setting flash area
Extra metal material in roll milling process can be allow to be overflowed by flash area, increase rolling efficiency, progressive forming-roller
Roll-shape-accurately forming workblank part.Eventually arrive at grating Zhi Jing, the purpose of abundant crystal grain thinning.
In the one side of the embodiment of the present invention, the roll is arranged between the restraining plate of both sides, and between restraining plate
Retention gap forms flash area, and roll fits closely rolling pressure with cladding layer forming blank in forming process, wherein roll
Lower pressure and rolling speed according to the material of forming blank determine.
The method that the present invention proposes profile-followed constraint rolling increasing material manufacturing is adopted to increasing the semi-solid blank of material process in fusing
With the casual constraint in side and the new process of synchronous rolling composite manufacturing.Using technique can in forming process the company of generation
Can effectively grating Zhi Jing, increase forming core column crystal/dendrite of increasing material manufacturing component be greatly reduced in continuous rolling effect
Tendency, side constraint are effectively improved the utilization rate of forming accuracy and material, the implementation of technique, may be implemented to difficulty at
The performance of the more complex part of shape material stablizes increasing material manufacturing, be suitble to large and medium-sized aerospace component short route, it is high-quality, efficient,
It is applied in whole manufacture.
The present invention also provides the devices for constraining rolling crystal grain thinning in a kind of increasing material manufacturing with the shape, as shown in Figure 1, packet
It includes：Restraining plate, the restraining plate include left side restraining plate 4 and right side restraining plate 17, the left side restraining plate 4 and right side restraining plate
17 are symmetricly set on the both sides of forming blank 3, and its lower face is concordant with the upper surface of forming blank 3；Roll, the roll are set
It sets between the left side restraining plate 4 and right side restraining plate 17, there are gaps between both sides of the face and respective side restraining plate is
Flash area, roll fits closely rolling pressure with cladding layer forming blank in forming process；Heat source 18, the heat source 18 are arranged
In the top of cladding layer forming blank；Substrate 2, the setting of affiliated substrate 2 is in 3 downside of forming blank, the bottom surface phase with forming blank 3
Even.Preferably, the restraining plate has idler wheel with 3 contact position of forming blank, between the idler wheel forward position and restraining plate forward position
Distance 37 be 0.2-0.5 times, 1-3 times of the thickness of a diameter of cladding layer forming blank of roller diameter.The idler wheel number
Amount is 2 or 2 or more, and the distance between two neighboring idler wheel 36 is 1.5-5 times of roller diameter, wherein left side restraining plate 4
With 2 or 2 or more left driving idler wheels 5, right side restraining plate 17 is with 2 or 2 with upper right driving idler wheel 7, the height of idler wheel
Degree is 1-1.2 times of corresponding restraining plate height.The fusing point of the material of the restraining plate and roll is higher than the fusing point of forming blank extremely
It is 600 DEG C few.
In the one side of the embodiment of the present invention, the roll includes first order roll 13, second level roll 10 and third
Grade roll 6, the distance between the first order roll 13 and second level roll 10 are equal to the second level roll 10 and the third level
The distance between roll 6.
In the one side of the embodiment of the present invention, as shown in figure 3, the rear and front end of the restraining plate is equipped with guiding list
Member, the pilot unit include mounted on the left side restraining plate pilot unit 32 of left side restraining plate rear and front end and mounted on right side
The right side restraining plate pilot unit 42 of restraining plate rear and front end.
In specific work process, heat source 18 is radiated on the surface of increasing material material of cladding layer, can be high energy beam,
Can be electric arc, it is preferable that the source center axis 15 of the heat source 18 is fallen on the center line of cladding layer.In forming process,
Clamping force 19 on the left of applying on left side restraining plate 4, the clamping force 20 on the right side of application on right side restraining plate 17, while driving first
Grade roll 13, which is rotated around first order roll rotation axis 15 along first order roll rotation direction 16, to advance, and second level roll 10 is around second
Grade roll rotation axis 12 is rotated along second level roll rotation direction 11 to advance, and third level roll 6 is around 9 edge of third level roll rotation axis
The rotation of third level roll rotation direction 8 is advanced, and wherein direction of advance is increasing material manufacturing direction 1.Also pass through left side simultaneously in forming
The position of restraining plate pilot unit 32 and the correction of right side restraining plate pilot unit 42 left side restraining plate and right side restraining plate, makes them
Position is corresponding.Result as shown forming in Fig. 2, wherein first layer increasing material manufacturing forming blank 21, the second layer increase material system
Forming blank 22 is made, until n-th layer increasing material manufacturing forming blank 23 stacks gradually, N is natural number.
The present invention proposes the device of profile-followed constraint rolling increasing material manufacturing, and the present apparatus is to the semisolid blank in fusing increasing material process
Material is formed using the casual constraint in side with the new process of synchronous rolling composite manufacturing.Using technique can at
Continuous rolling effect is generated during shape, effectively grating Zhi Jing, increase forming core increasing material manufacturing component can be greatly reduced
Column crystal/dendrite tendency, side constraint are effectively improved the utilization rate of forming accuracy and material, the implementation of technique,
It may be implemented to stablize increasing material manufacturing to the performance of the more complex part of difficult moulding material, be suitble to the short stream in large and medium-sized aerospace component
It is applied in journey, high-quality, efficient, entirety manufacture.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of method for constraining rolling crystal grain thinning in increasing material manufacturing with the shape, which is characterized in that in fusing increasing material manufacturing process
In, cladding layer forming blank is formed using the casual constraint in side with the method for synchronous rolling composite manufacturing, side is passed through
Casual constraint improves forming accuracy and stock utilization, by synchronous rolling grating column crystal/dendrite, increases nucleation rate, carries
Highly crystalline rate, crystal grain thinning.
2. the method for constraining rolling crystal grain thinning in increasing material manufacturing as described in claim 1 with the shape, which is characterized in that side with
Property constraint in the material melting point of the restraining plate that uses and the roll used in synchronous rolling higher than forming blank fusing point at least
600 DEG C, and the intensity and rigid requirements of its rolling need to be met, restraining plate is synchronous with increasing material manufacturing campaign with roll in forming process
Advance.
3. the method for constraining rolling crystal grain thinning in increasing material manufacturing as claimed in claim 2 with the shape, which is characterized in that it is described about
Beam plate is symmetricly set on the both sides of forming blank, and the either flush of lower face and forming blank highly shapes base for cladding layer
Expect thickness 1-1.6 times, respectively to the restraining plate of both sides by opposite direction equivalence force in forming process.
4. the method for constraining rolling crystal grain thinning in increasing material manufacturing as claimed in any one of claims 1-3 with the shape, feature
It is, the roll is arranged between the restraining plate of both sides, and retention gap forms flash area between restraining plate, in forming process
Middle roll fits closely rolling pressure with cladding layer forming blank, wherein the lower pressure and rolling speed of roll are according to forming base
The material of material determines.
5. the method for constraining rolling crystal grain thinning in increasing material manufacturing as claimed in claim 4 with the shape, which is characterized in that described to roll
Roller includes first order roll, second level roll and third level roll, and first order roll is used for rolling liquid-semi-solid blank, the
Two level roll is used for rolling semi-solid blank, and third level roll is used for offseting flash area.
6. the device of rolling crystal grain thinning is constrained in a kind of increasing material manufacturing with the shape, which is characterized in that including：
Restraining plate, the restraining plate include left side restraining plate and right side restraining plate, the left side restraining plate and right side restraining plate pair
Title is arranged in the both sides of forming blank, and its lower face is concordant with the upper surface of forming blank；
Roll, the roll are arranged between the left side restraining plate and right side restraining plate, and both sides of the face are constrained with respective side
There are gap it is flash area between plate, roll and cladding layer forming blank fit closely rolling pressure in forming process；
Heat source, the heat source are arranged in the top of cladding layer forming blank；
Substrate, affiliated substrate are arranged on the downside of forming blank, are connected with the bottom surface of forming blank.
7. the device of rolling crystal grain thinning is constrained in increasing material manufacturing as claimed in claim 6 with the shape, which is characterized in that it is described about
It is roller diameter that beam plate has idler wheel, the distance between the idler wheel forward position and restraining plate forward position with forming blank contact position
0.2-0.5 times, the number of rollers is 2 or 2 or more, and the distance between two neighboring idler wheel is the 1.5-5 of roller diameter
Times, the height of idler wheel is 1-1.2 times of corresponding restraining plate height.
8. the device of rolling crystal grain thinning is constrained in increasing material manufacturing as claimed in claim 6 with the shape, which is characterized in that described to roll
Roller includes first order roll, second level roll and third level roll, the distance between the first order roll and second level roll
Equal to the distance between the second level roll and third level roll.
9. the device of rolling crystal grain thinning is constrained in increasing material manufacturing as claimed in claim 6 with the shape, which is characterized in that it is described about
The fusing point of the material of beam plate and roll is higher than at least 600 DEG C of the fusing point of forming blank.
10. the device of rolling crystal grain thinning, feature are constrained in the increasing material manufacturing as described in any one of claim 6-9 with the shape
It is, the rear and front end of the restraining plate is equipped with pilot unit, and the pilot unit includes being mounted on before and after the restraining plate of left side
The left side restraining plate pilot unit at both ends and right side restraining plate pilot unit mounted on right side restraining plate rear and front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710009692.XA CN108384938B (en) | 2017-01-06 | 2017-01-06 | Method and device for shape-following constraint rolling refinement of crystal grains in additive manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710009692.XA CN108384938B (en) | 2017-01-06 | 2017-01-06 | Method and device for shape-following constraint rolling refinement of crystal grains in additive manufacturing |
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| Publication Number | Publication Date |
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| CN108384938A true CN108384938A (en) | 2018-08-10 |
| CN108384938B CN108384938B (en) | 2020-01-07 |
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| CN201710009692.XA Active CN108384938B (en) | 2017-01-06 | 2017-01-06 | Method and device for shape-following constraint rolling refinement of crystal grains in additive manufacturing |
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| CN109226965A (en) * | 2018-09-21 | 2019-01-18 | 浙江海洋大学 | A kind of lamination increasing material manufacturing device and method of metal foil plate composite material |
| CN109623180A (en) * | 2019-01-28 | 2019-04-16 | 东北大学 | A kind of silk material electric arc increasing material manufacturing method of magnesium alloy |
| CN111349767A (en) * | 2018-12-20 | 2020-06-30 | 波音公司 | High-pressure torsion device and method for changing material properties of workpiece by using same |
| CN115106541A (en) * | 2022-07-19 | 2022-09-27 | 季华实验室 | Method and apparatus for additive manufacturing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226965A (en) * | 2018-09-21 | 2019-01-18 | 浙江海洋大学 | A kind of lamination increasing material manufacturing device and method of metal foil plate composite material |
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| CN109623180A (en) * | 2019-01-28 | 2019-04-16 | 东北大学 | A kind of silk material electric arc increasing material manufacturing method of magnesium alloy |
| CN109623180B (en) * | 2019-01-28 | 2021-06-04 | 东北大学 | Electric arc additive manufacturing method for magnesium alloy wire |
| CN115106541A (en) * | 2022-07-19 | 2022-09-27 | 季华实验室 | Method and apparatus for additive manufacturing |
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| Publication number | Publication date |
|---|---|
| CN108384938B (en) | 2020-01-07 |
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