CN109759588A - A kind of quick increasing material manufacturing method of large-sized duplex metal part - Google Patents
A kind of quick increasing material manufacturing method of large-sized duplex metal part Download PDFInfo
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- CN109759588A CN109759588A CN201910163795.0A CN201910163795A CN109759588A CN 109759588 A CN109759588 A CN 109759588A CN 201910163795 A CN201910163795 A CN 201910163795A CN 109759588 A CN109759588 A CN 109759588A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The present invention provides a kind of quick increasing material manufacturing methods of large-sized duplex metal part, the process of method specifically includes that respectively using the outermost layer and internal structure of selective laser melting (SLM) molding technology and plasma arc increases material manufacturing technology printing part, after outermost layer structure in the printed previous cycle of selective laser melting (SLM) molding, the metal powder within outermost layer profile is sopped up using built-in starch absorbing device, then with plasma arc increasing material manufacturing printing filling internal structure, constantly circulation is until complete part printing.Compared with prior art, the beneficial effects of the present invention are: (1) have and faster print the abilities of large complicated Shape Parts；(2) there is the ability for faster printing the higher part of large surfaces required precision；(3) ability for the more material parts for having printing outermost layer different from internal material.
Description
Technical field
It is specifically a kind of that plasma arc is increased into material technique and constituency the present invention relates to a kind of novel metal part preparation method
Laser is melted and molded the quick increasing material manufacturing method of the combined heavy parts of technique, belongs to metal material field.
Background technique
Selective laser melting (SLM) molding technology is a kind of high-precision metal increasing material manufacturing method, the sample surfaces light printed
Sliding, fine structure, but print speed is very slow, it is difficult to efficiently print heavy parts, while be difficult to print and be made of a variety of materials
Part.
Plasma arc increases material manufacturing technology is a kind of efficient metal increasing material manufacturing method, but printing precision and precinct laser
Melt-forming technology is suitble to larger stamp with the size but the lower finished product of required precision or blank part compared to lower.
Chinese patent CN201611115889.3 proposes a kind of powder metallurgy forming function of melting based on precinct laser
The method of functionally gradient material (FGM), but in this method and it is not introduced into the technology that print speed can be improved, so print speed is slower.It is similar
Ground, Chinese invention patent CN201510747275.6,
CN201410532792.7, Chinese patent application CN201810292599.9,
CN201810541184.0, it was also proposed that the several side based on selective laser melting (SLM) molding printing functionally gradient material (FGM)
Method, but it is not introduced into the technology that print speed can be improved, so print speed is equally relatively slow, it is biggish to be not suitable for stamp with the size
Part.
Chinese patent CN201720730439.9, CN201610458932.X, CN201610458934.9 and Chinese patent
Application CN201610994357.5, CN201811279445.2 propose the wire feed increasing material manufacturing side based on plasma arc heat source
Method, but these methods are to obtain high-precision geometry to direct printing to propose effective measures, therefore be not suitable for printing precision
More demanding part.
Summary of the invention
The purpose of the present invention is being directed to the deficiency of above-mentioned background technique, propose a kind of by plasma arc increasing material technique and constituency
Laser is melted and molded the combined heavy parts increasing material manufacturing method of technique, is printed by selective laser melting (SLM) molding method
The outermost layer structure of heavy parts increases material technology by plasma arc and prints other parts of the heavy parts in addition to outermost layer.
This method has the ability for faster printing large complicated part, while the more materials for having printing outermost layer different from internal material
Expect the ability of part.Concrete scheme is as follows:
A kind of quick increasing material manufacturing method of large-sized duplex metal part, includes the following steps:
In S1, the chamber sealed one, metal is printed on a metal substrate using selective laser melting (SLM) molding technique
The bottom surface of feature bottom outer profile and side wall；
S2, the metal powder within outer profile is siphoned away；
S3, the inner space for increasing material process filling outer profile using plasma arc, the internal material filled are lower than foreign steamer
Wide top surface；
S4, the Powder spreader for opening selective laser melting (SLM) molding equipment carry out powdering, until by the depressed section in outer profile
It is filled up completely；
S5, the metal zero is printed several times on the basis of the outer profile of bottom using selective laser melting (SLM) molding technique
The rest part of part outer profile, and complete successively to execute step S2-S4 in each printing, until the foreign steamer of the metal parts
It is wide that all printing is completed and inside is filled up completely；
S6, metal substrate is put into heat-treatment furnace progress destressing heat treatment together with metal parts；
S7, metal parts is cut down from metal substrate using wire cutting technology part.
Further, in step s 2, increase the internal material and printed foreign steamer of material process filling using plasma arc
Difference in height between exterior feature is 3-9mm.
Further, when being filled near metal parts outer profile position using plasma arc increasing material technology, etc.
Start wire feed after ion arc is burnt 1-3 seconds.
Further, selective laser melting (SLM) molding technique and plasma arc increase the gold of the identical or different model of material process selection
Belong to material.
Further, the method also includes:
When metal parts is printed the cross-sectional area of part less than 300 square millimeters, precinct laser fusion is only used
Moulding process carries out printing shaping, prints without using plasma arc.
Compared with prior art, the beneficial effects of the present invention are:
(1) there is the ability for faster printing large complicated Shape Parts；
(2) there is the ability for faster printing the higher part of large surfaces required precision；
(3) ability for the more material parts for having printing outermost layer different from internal material.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is that the present invention is carried out to the schematic diagram of step S3；
Fig. 2 is the part schematic diagram that the present invention produces in an embodiment.
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into
Row description.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, so as to
Illustrate technical solution of the present invention.Presently preferred embodiments of the present invention is described in detail as follows, however other than these detailed descriptions, this
Invention can also have other embodiments.
It is combined by plasma arc increasing material technique and selective laser melting (SLM) molding technique that the present invention provides a kind of
Heavy parts increasing material manufacturing method is first transformed existing selective laser melting (SLM) molding equipment before implementing this method, is beating
It prints and increases plasma arc increasing material manufacturing component in working chamber.It is referred to shown in Fig. 1, includes one in the work chamber 1 of sealing
Workbench 5, the table top of bench-top is fixed with a stainless steel metal substrate 6, in work chamber 1 and above workbench 5
It is provided with laser output device 11, plasma (welding) torch 3 and starch absorbing device 9, laser output device 11, plasma (welding) torch 3 and suction
Powder device 9 is respectively mounted on Multi-axle moving device respectively, driven respectively by Multi-axle moving device laser output device 11, etc. from
Subarc welding gun 3 and starch absorbing device 9 carry out polyaxial movement.Wherein, the laser beam 2 that laser output device 11 emits is radiated at work
On platform 5 by print position.Plasma (welding) torch 3 is configured with wire feeder 8, the end for the metal wire material 7 that wire feeder 8 exports
At the tip of plasma (welding) torch 3.Optionally, laser output device 11, plasma (welding) torch 3, starch absorbing device 9 and multiaxis move
Dynamic device is connected with PLC controller.Multi-axle moving device is can lateral, longitudinal and vertically movable three shaft moving devices.
Preparation method process of the invention is as follows:
S1, one sealing chamber in, using selective laser melting (SLM) molding technique (Selective Laser Melting,
SLM bottom surface and the side wall of metal parts bottom outer profile) are printed on a stainless steel metal substrate, the outer profile printed
Bottom surface and sidewall thickness control are between 0.5mm-5mm, and the outer profile height printed controls between 5-20mm.
After the completion of S2, printing, the metal powder within the outer profile of bottom is siphoned away using the starch absorbing device 9 in work chamber 1.
S3, metal material 10, and the metal filled are filled in the inner space of outer profile 4 using plasma arc increasing material technique
The top surface of material 10 is slightly below the top surface of outer profile.Wherein, the metal material 10 of filling highly controls between 1.5-9mm, and
Difference in height between metal material 10 and outer profile controls between 3-9mm, at this time as shown in Figure 1.
S4, the Powder spreader for opening selective laser melting (SLM) molding equipment carry out powdering, until the depressed section quilt in outer profile
Metal powder is paved with completely.
S5, it continues to use selective laser melting (SLM) molding technique and prints metal zero several times on the basis of the outer profile of bottom
The rest part of part outer profile, and step S2-S4 is successively executed after each printing, until the outer profile of metal parts is whole
Printing is completed and inside is filled up completely.Wherein, it is subsequent printed every time outermost layer profile thickness control 0.5mm-5mm it
Between, and the outermost layer height printed every time controls between 5-20mm.
S6, metal substrate 6 is put into heat-treatment furnace progress destressing heat treatment together with part.
S7, part is cut down from metal substrate 6 using wire cutting technology part.Fig. 2 shows in an embodiment
A kind of parts sectional view prepared using manufacturing process of the present invention.
In the present embodiment, selective laser melting (SLM) molding technique and plasma arc increase the steel of material process selection different model
As raw material.And in above-mentioned preparation process, plasma arc is carried out in the thin-wall construction position manufactured near outer layer SLM and increases material
It when process filling metal material 10, first has to that plasma arc is allowed to burn 3 seconds, then starts wire feed, so that plasma arc prints
Material can with SLM print position sufficiently fuse.In the present invention, selective laser melting (SLM) molding technique and plasma arc increase
The metal material that material technique uses can be the same or different.
When metal parts is printed the cross-sectional area of part less than 300 square millimeters, precinct laser fusion is only used
Moulding process carries out printing shaping, prints without using plasma arc.
A more detailed embodiment is set forth below to be illustrated:
Step 1: being transformed existing selective laser melting (SLM) molding equipment, in the intracavitary increase plasma arc of print job
Increasing material manufacturing component, specifically includes: plasma (welding) torch, wire feeder and welding kinetic control system；
Step 2: first circulation on stainless steel metal substrate 6, using 316L stainless steel powder powder stock, passes through constituency
Laser is melted and molded the bottom outer profile 4 (i.e. the bottom of part and outermost layer side wall) of technology printing part, and what is printed is outer
For profile 4 with a thickness of 3mm, first 4 height of outer profile printed in recycling is 10mm；
Step 3: the metal powder within outer profile 4 printed in step 2 is siphoned away using built-in starch absorbing device；
Step 4: it on the basis of step 3, uses diameter for the ER50-6 ordinary steel welding wire of 0.5mm, uses plasma
Arc increases the inner space of material technology filling large part, and the height of the inside Steel material filled in step 2 lower than being printed
Outermost layer structure, difference in height 3mm；
Step 5: opening the Powder spreader of selective laser melting (SLM) molding equipment, starts powdering, within outermost layer profile
Depressed section is paved with；
Step 6: second circulation continues printing zero using selective laser melting (SLM) molding technology on the basis of step 5
The rest part of part outer profile, for the outermost layer printed with a thickness of 3mm, the outermost layer height printed in this circulation is 10mm；
Step 7: second circulation, it will be stainless within outer profile printed in step 6 using built-in starch absorbing device
Steel metal powder siphons away；
Step 8: second circulation uses diameter for the ER50-6 ordinary steel welding wire of 0.5mm, increases material using plasma arc
The inner space of technology filling large part, the height for the inside Steel material filled is lower than the outermost layer printed in step 2
Structure, difference in height 3mm；
Step 9: and so on, repeat step 6~step 8, until completing part printing.
Step 10: the common bimetal copper-steel composite part of printed stainless steel-is put into heat together with stainless steel substrate simultaneously
Treatment furnace carries out destressing heat treatment.
Step 11: the common bimetal copper-steel composite part of stainless steel-is cut down from substrate using wire cutting.
The combination effect between outermost layer stainless steel and internal ordinary steel in order to verify the present embodiment printing, to being printed
Top, bottommost and intermediate three, the position cross section of part have carried out metallographic observation, and discovery mean porosities are lower than 1%.
In addition, for the interface cohesion effect between preliminary identification outermost layer stainless steel and internal ordinary steel, it is double to stainless steel-ordinary steel
Metal composite part applies oscillating load, and observation is tied at stainless steel-ordinary steel interface after the processing of long-time oscillating load
Conjunction state.Oscillating load frequency is 1000 hertz, power 700W, time of vibration 10 days.It does not find by this oscillating load
There is crackle appearance on the interface of the stainless steel outermost layer of the part of reason and internal common steel matrix, illustrates stainless steel of the invention most
Outer layer and internal common steel matrix, which have, preferably combines effect.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, devices and structures not described in detail herein should be understood as gives reality with the common mode in this field
It applies；Anyone skilled in the art, without departing from the scope of the technical proposal of the invention, all using the disclosure above
Methods and technical content many possible changes and modifications are made to technical solution of the present invention, or be revised as equivalent variations etc.
Embodiment is imitated, this is not affected the essence of the present invention.Therefore, anything that does not depart from the technical scheme of the invention, foundation
Technical spirit of the invention any simple modifications, equivalents, and modifications made to the above embodiment, still fall within the present invention
In the range of technical solution protection.
Claims (5)
1. a kind of quick increasing material manufacturing method of large-sized duplex metal part, which comprises the steps of:
In S1, the chamber sealed one, metal parts is printed on a metal substrate using selective laser melting (SLM) molding technique
The bottom surface of bottom outer profile and side wall；
S2, the metal powder within outer profile is siphoned away；
S3, the inner space for increasing material process filling outer profile using plasma arc, the internal material filled is lower than outer profile
Top surface；
S4, the Powder spreader for opening selective laser melting (SLM) molding equipment carry out powdering, until the depressed section in outer profile is complete
Filling；
S5, it is printed outside the metal parts several times on the basis of the outer profile of bottom using selective laser melting (SLM) molding technique
The rest part of profile, and complete successively to execute step S2-S4 in each printing, until the outer profile of the metal parts is complete
Portion's printing is completed and inside is filled up completely；
S6, metal substrate is put into heat-treatment furnace progress destressing heat treatment together with metal parts；
S7, metal parts is cut down from metal substrate using wire cutting technology part.
2. a kind of quick increasing material manufacturing method of large-sized duplex metal part as described in claim 1, which is characterized in that in step S2
In, increasing the difference in height between the internal material and printed outer profile of material process filling using plasma arc is 3-9mm.
3. a kind of quick increasing material manufacturing method of large-sized duplex metal part as described in claim 1, which is characterized in that near
When metal parts outer profile position is filled using plasma arc increasing material technology, start to send after waiting ion arc to burn 1-3 seconds
Silk.
4. a kind of quick increasing material manufacturing method of large-sized duplex metal part as described in claim 1, which is characterized in that precinct laser
It is melted and molded technique and plasma arc increases the metal material of the identical or different model of material process selection.
5. a kind of quick increasing material manufacturing method of large-sized duplex metal part as described in claim 1, which is characterized in that the method
Further include:
When metal parts is printed the cross-sectional area of part less than 300 square millimeters, selective laser melting (SLM) molding is only used
Technique carries out printing shaping, prints without using plasma arc.
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| CN201910163795.0A CN109759588B (en) | 2019-03-05 | 2019-03-05 | Rapid additive manufacturing method for large-scale bimetal part |
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| CN201910163795.0A CN109759588B (en) | 2019-03-05 | 2019-03-05 | Rapid additive manufacturing method for large-scale bimetal part |
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Cited By (4)
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| CN110000383A (en) * | 2019-05-27 | 2019-07-12 | 上海交通大学 | More metal parts increasing material manufacturing device and methods of the femtosecond in conjunction with conventional laser |
| CN110125399A (en) * | 2019-05-27 | 2019-08-16 | 上海交通大学 | Add more metal parts laser gain material manufacturing methods of transition zone |
| CN110303225A (en) * | 2019-06-05 | 2019-10-08 | 华中科技大学 | A kind of more arc gum increasing material manufacturing system and methods |
| CN110538997A (en) * | 2019-09-29 | 2019-12-06 | 华南理工大学 | laser pre-cladding auxiliary plasma additive manufacturing equipment and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110000383A (en) * | 2019-05-27 | 2019-07-12 | 上海交通大学 | More metal parts increasing material manufacturing device and methods of the femtosecond in conjunction with conventional laser |
| CN110125399A (en) * | 2019-05-27 | 2019-08-16 | 上海交通大学 | Add more metal parts laser gain material manufacturing methods of transition zone |
| CN110000383B (en) * | 2019-05-27 | 2023-05-26 | 上海交通大学 | Femtosecond and traditional laser combined multi-metal part additive manufacturing device and method |
| CN110303225A (en) * | 2019-06-05 | 2019-10-08 | 华中科技大学 | A kind of more arc gum increasing material manufacturing system and methods |
| CN110303225B (en) * | 2019-06-05 | 2020-06-02 | 华中科技大学 | Multi-arc gun additive manufacturing system and method |
| CN110538997A (en) * | 2019-09-29 | 2019-12-06 | 华南理工大学 | laser pre-cladding auxiliary plasma additive manufacturing equipment and method |
| CN110538997B (en) * | 2019-09-29 | 2023-07-18 | 华南理工大学 | Laser pre-cladding auxiliary plasma additive manufacturing equipment and method |
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Effective date of registration: 20230414 Address after: 200190 1st floor, building 30, 525 Yuanjiang Road, Minhang District, Shanghai Patentee after: SHANGHAI HANBANG UNITED 3D TECH Co.,Ltd. Address before: 200190 1st floor, building 30, 525 Yuanjiang Road, Minhang District, Shanghai Patentee before: SHANGHAI HANBANG UNITED 3D TECH Co.,Ltd. Patentee before: SHANGHAI JIAO TONG University |