CN106493364B - A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique - Google Patents

A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique Download PDF

Info

Publication number
CN106493364B
CN106493364B CN201610947008.8A CN201610947008A CN106493364B CN 106493364 B CN106493364 B CN 106493364B CN 201610947008 A CN201610947008 A CN 201610947008A CN 106493364 B CN106493364 B CN 106493364B
Authority
CN
China
Prior art keywords
powder
low activation
laser fusion
martensitic steel
precinct laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610947008.8A
Other languages
Chinese (zh)
Other versions
CN106493364A (en
Inventor
吴宜灿
翟玉涛
黄群英
黄波
张俊钰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Institutes of Physical Science of CAS
Original Assignee
Hefei Institutes of Physical Science of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hefei Institutes of Physical Science of CAS filed Critical Hefei Institutes of Physical Science of CAS
Priority to CN201610947008.8A priority Critical patent/CN106493364B/en
Publication of CN106493364A publication Critical patent/CN106493364A/en
Application granted granted Critical
Publication of CN106493364B publication Critical patent/CN106493364B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/64—Treatment of workpieces or articles after build-up by thermal 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
    • B22F10/20—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
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • 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
    • 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
    • B22F10/34—Process control of powder characteristics, e.g. density, oxidation or flowability
    • 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
    • B22F12/10—Auxiliary heating means
    • B22F12/13—Auxiliary heating means to preheat the material
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention discloses a kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique, its feature includes：Material is low activation martensitic steel microsphere powder, and fine powder (200 400 mesh) is 1~1.5 with the powder weight proportioning of meal (50 150 mesh), with preferable compactedness；Using precinct laser fusion rapid molding method, the 300W of laser power 20, the 135um of lasing beam diameter 70, the 2000mm/s of sweep speed 500, the 120um of sweep span 35, the 50um of lift height 20, powder preheats 150 300 DEG C, the 20cm of shaping speed 53/ h, argon gas is protected and pressure maintains 10 20mbar in forming room, and part manufacture is incubated more than 48 hours, finally profiled part is heat-treated, Technology for Heating Processing after finishing at 250 400 DEG C：720 760 DEG C are warming up to stove, be incubated 60 120min, then cooling of coming out of the stove after cooling to less than 100 DEG C with the furnace, to reduce residual stress, the overall performance of raising part；Good part rapid shaping quality can be obtained under this technique.

Description

A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique
Technical field
The present invention relates to a kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique, can be used for fusion reactor blanket And the rapid shaping of the Advanced Nuclear Energy Systems complex components such as fission-type reactor.
Background technology
Increasing material manufacturing (i.e. 3D printing) is rising in recent years and the emerging fast precise processing and manufacturing technology for developing rapidly, It is used widely in aerospace field；The technology can process the part that conventional method is difficult to manufacture, with labyrinth Parts-moulding high precision, production efficiency is high and part be integrally formed effect it is good the advantages of.Due to different material rapid shapings Technique difference is larger, and part quick shaping process is the key of the technology.Fusion reactor is using low activation martensitic steel as structure Material, low activation martensitic steel has excellent thermophysical property, Flouride-resistani acid phesphatase swelling performance, anti-liquid metal corrosion performance etc., The primary structural material of fusion reactor blanket is chosen as, has been also the main candidate structural wood of following fusion engineering mimoir heap covering Material；Meanwhile, low activation martensitic steel is also the main candidate structure of the Advanced Nuclear Energy Systems critical components such as lead base heap fuel assembly Material.The Advanced Nuclear Energy Systems critical component service condition such as fusion reactor blanket and lead base heap fuel assembly is harsh, is subjected to persistent erection Sub- irradiation, surface heat flow high, nuclear heat high deposition, high pressure and complicated machinery load etc., and these key part structures are complicated, to portion The Forming Quality and formed precision of part propose requirement higher.
The Advanced Nuclear Energy Systems such as fusion reactor blanket because being deposited with nuclear heat higher, cooling-part typically have high density and The complicated water runner arrangement at narrow interval.At present, using welding more than shaping of the Advanced Nuclear Energy Systems labyrinth containing runner cooling-part Method, it is especially to use the less high energy beam in heat affected area (such as electron beam, laser) welding method combination specially-shapeds more Technique (such as patent：CN201110250136.4) etc.；Meanwhile, it is the global formation performance for further improving complex component, also adopt With the compound welding technology of special welding method (such as Hot Isostatic Pressing Diffusion, electron beam, laser) (such as patent： CN200810021143.5), but because weld seam is intensive, causes welding difficulty higher and crackle easily occurs in weld seam, additionally, welding process Complicated heat input causes part distortion larger, and shaping difficulty is high and later stage orthopedic difficulty, the long preparation period of part, cost It is high.
3D printing can one-shot forming labyrinth part, part distortion is small, near-net-shape, without following process treatment Deng the shaping of the suitable part with labyrinth；The precision processing technology of 3D printing rapid shaping is applied into fusion reactor bag The preparation of the Advanced Nuclear Energy Systems complex components such as layer, with wide development and application prospect, need to carry out fusion reactor special The research of the complex component quick shaping process of structural material.
The content of the invention
The technical problem to be solved in the invention：Overcome that existing complex components welding processing difficulty is high, welding deformation Greatly, easily there are the key issues such as crackle in postwelding, there is provided a kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique, with Solve the problem of Advanced Nuclear Energy Systems complex components low activation martensitic steel 3D printing rapid shaping.Preferably constituency of the invention Laser fusion technique carries out the rapid processing manufacture of the Advanced Nuclear Energy Systems such as fusion reactor blanket key complex components, with portion Part can one-shot forming, the advantage that formed precision is high and Forming Quality is good.
Technical solution of the invention is as follows：A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique, Realize that step is as follows：
(1) raw material are low activation martensitic steel microsphere powder, and fine powder matches by a certain percentage with meal, are filled out with raising Fill density；
(2) graphic computer description is carried out to the complex components to be molded, the complex components three that will be shaped In dimension sheet template control computer, the main construction including threedimensional model, according to whether the selection shaping such as addition support Direction, the thickness and the number of plies of hierarchy slicing, extraction and filling of cross section contour etc. are selected according to the size of part, set slice thick Degree and total score layer number etc.；
(3) precinct laser fusion technique, laser power 20-300W, beam diameter 70-135um, sweep speed 500- are set 2000mm/s, sweep span 35-120um, lift height 20-50um, powder preheat 150-300 DEG C, shaping speed 5-20cm3/ H, argon gas is protected and pressure maintains 10-20mbar in forming room；
(4) powder mixture ratio, fine powder (200-400 mesh) is 1~1.5 with the powder weight proportioning of meal (50-150 mesh), It is well mixed under vacuum condition, prevents Powder Oxidation；
(5) powdering and fusing, by powder feeding mechanism, uniform laying a layer thickness is the low activation horse of 0.2-1mm on substrate Family name's body (CLAM) powdered steel, carries out rapid shaping, subsequently successively according to computer graphical chip formation using laser beam to powder Powdering and laser beam melts rapid shaping are carried out, until complex components complete shaping；
(6) part manufacture is incubated more than 48 hours after finishing at 300-400 DEG C, finally carries out hot place to profiled part Reason, Technology for Heating Processing：720-760 DEG C is warming up to stove, is incubated 60-120min, then come out of the stove after cooling to less than 100 DEG C with the furnace cold But, to reduce residual stress, the overall performance of profiled part is improved；
Present invention advantage compared with prior art：
(1) present invention to complex components can a near-net-shape, within the reachable+0.5mm of dimensional accuracy, surface quality It is higher, typically without follow-up mechanical process；
(2) complex components are molded and the microscopic structure of material has isotropism with mechanical property after Overheating Treatment And homogenization；
(3) being molded in argon gas protection environment is carried out, and forming part oxygen element content (being less than 100ppm) meets standard, keeps away Material oxidation is exempted from, parts-moulding quality is high, even tissue, the defect such as pore-free, crackle and no cofusing particle；
(4) the recyclable recycling of residual powder after being molded, stock utilization is close to 100%, and shaping speed is higher (reachable To about 80cm3/ h) etc..
Brief description of the drawings
Fig. 1 is China's liquid DFLL the first wall components of covering；
Fig. 2 is that China liquid DFLL coverings cool down board member；
Fig. 3 is the Chinese lead base heap upper and lower tube base part of fuel assembly cladding tubes.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is discussed in detail the present invention.But following embodiment is only limitted to explain this hair Bright, protection scope of the present invention should include the full content of claim, be not limited only to the present embodiment.
Embodiment 1, by taking fusion reactor China liquid DFLL covering the first wall components rapid shapings as an example, as shown in figure 1, structure Material is low activation martensite (CLAM) steel of China；
(1) material is the microsphere powder of low activation martensite (CLAM) steel, and by fine powder (200-350 mesh) and meal (50- 100 mesh) press by weight ratio 1:It is fitted into powder feeding mechanism after 1.5 mixing, powder preheats 300 DEG C；
(2) precinct laser fusion equipment is vacuumized, and treats that vacuum reaches 10-3After Pa magnitudes high-purity Ar is filled with to vacuum chamber2, After vacuum reaches 1MPa, high-purity Ar is vacuumized and is filled with again2, so prepurging more than 2 times repeatedly；
(3) the CLAM steel fine powder and meal that a layer thickness is 0.5mm are sprawled in powdering plane by powder feeding mechanism first Mixing match powder；
(4) by the STL form sheet template computers of the part of rapid shaping, area of computer aided graphics process is carried out； According to the size of part：* * wide long are high=161mm*155mm*205mm, selection lift height is 0.5mm, it is considered to part into Separated with the processing of substrate after type, total hierarchy number is 4120 layers；
(5) precinct laser fusion technique：Laser power 250W, laser diameter 80um, sweep speed 2000mm/s, scanning room Away from 90um, lift height 50um, powder preheats 300 DEG C, and argon gas protection in forming room, argon pressure 17mbar is entirely being molded During ensure shaping indoor temperature at 350 DEG C or so；
(6) laser beam is selectively sintered according to the information of cross section profile under control of the computer, metal dust Be sintered together under the bombardment of laser beam, and with following molded part adhesive, after ground floor powder fusing after, pass through Powder feeding mechanism lays second layer powder, and powder thickness is uniform and, such layer upon layer identical with ground floor thickness, until whole zero All sintering is completed part；
(7) after the completion of part sintering, it is incubated in 350 DEG C of environment in forming room and is cracked with preventing portion part for 72 hours, Insulation is begun to cool down to room temperature after terminating, and blow-on simultaneously takes out part after reclaiming unnecessary powder filler；
(8) part heat treatment；Part carries out vacuum heat after taking out, should with the remnants reduced during parts-moulding Power, improves the overall performance of part, Technology for Heating Processing：Be warming up to 740 DEG C with stove, be incubated 120min, cool to the furnace 100 DEG C with Come out of the stove after lower cooling；
(9) be computed with measurement, the shaping speed of the first wall components is 50cm3/ h, formed precision reaches+0.3mm, metallographic Tissues observed is uniform, the defect such as pore-free, crackle and no cofusing particle.
Embodiment 2：By taking fusion reactor China liquid DFLL coverings cooling board member rapid shaping as an example, as shown in Fig. 2 structure Material is low activation martensite (CLAM) steel of China；
(1) material is the microsphere powder of low activation martensite (CLAM) steel, and by fine powder (200-350 mesh) and meal (50- 150 mesh) press by weight ratio 1:It is fitted into powder feeding mechanism after 1.5 mixing, powder preheats 250 DEG C；
(2) precinct laser fusion equipment is vacuumized, and treats that vacuum reaches 10-3After Pa magnitudes high-purity Ar is filled with to vacuum chamber2, After vacuum reaches 1MPa, high-purity Ar is vacuumized and is filled with again2, so prepurging more than 2 times repeatedly；
(3) the CLAM steel fine powder and meal that a layer thickness is 0.3mm are sprawled in powdering plane by powder feeding mechanism first Mixing match powder；
(4) by the STL form sheet template computers of the part of rapid shaping, area of computer aided graphics process is carried out； According to the size of part：* * wide long are high=200mm*101mm*10mm, selection lift height is 0.3mm, it is considered to part into Separated with the processing of substrate after type, total hierarchy number is 40 layers；
(5) precinct laser fusion technique：Laser power 150W, laser diameter 90um, sweep speed 1000mm/s, scanning room Away from 100um, lift height 30um, powder preheats 250 DEG C, and argon gas protection in forming room, argon pressure 13mbar is entirely being molded During ensure shaping indoor temperature at 300 DEG C or so；
(6) laser beam is selectively sintered according to the information of cross section profile under control of the computer, metal dust Be sintered together under the bombardment of laser beam, and with following molded part adhesive, after ground floor powder fusing after, pass through Powder feeding mechanism lays second layer powder, and powder thickness is uniform and, such layer upon layer identical with ground floor thickness, until whole zero All sintering is completed part；
(7) after the completion of part sintering, it is incubated in 300 DEG C of environment in forming room and is cracked with preventing portion part for 60 hours, Insulation is begun to cool down to room temperature after terminating, and blow-on simultaneously takes out part after reclaiming unnecessary powder filler；
(8) part heat treatment；Part carries out vacuum heat after taking out, should with the remnants reduced during parts-moulding Power, improves the overall performance of part, Technology for Heating Processing：Be warming up to 760 DEG C with stove, be incubated 120min, cool to the furnace 100 DEG C with Come out of the stove after lower cooling.
(9) it is computed being about 60cm with measurement, the shaping speed for cooling down board member3/ h, formed precision reaches+0.4mm, gold Phase tissues observed is uniform, does not find the defects such as stomata, crackle and no cofusing particle.
Embodiment 3：By taking the Chinese upper and lower tube base part rapid shaping of lead base heap fuel assembly cladding tubes as an example, as shown in figure 3, Structural material is Chinese low activation martensitic steel；
(1) material is the microsphere powder of low activation martensitic steel (CLAM), and by fine powder (200-300 mesh) and meal (80- 150 mesh) press by weight ratio 1:It is fitted into powder feeding mechanism after 1.5 mixing, powder preheats 250 DEG C；
(2) precinct laser fusion equipment is vacuumized, and treats that vacuum reaches 10-3After Pa magnitudes high-purity Ar is filled with to vacuum chamber2, After vacuum reaches 1MPa, high-purity Ar is vacuumized and is filled with again2, so prepurging more than 2 times repeatedly；
(3) the CLAM steel fine powder and meal that a layer thickness is 0.5mm are sprawled in powdering plane by powder feeding mechanism first Mixing match powder；
(4) by the STL form sheet template computers of the part of rapid shaping, area of computer aided graphics process is carried out； According to the size of part：* * wide long are high=117mm*130mm*10mm, selection lift height is 0.2mm, it is considered to part into Separated with the processing of substrate after type, total hierarchy number is 80 layers；
(5) precinct laser fusion technique：Laser power 80W, laser diameter 70um, sweep speed 700mm/s, sweep span 80um, lift height 20um, powder preheat 250 DEG C, and argon gas protection in forming room, argon pressure 15mbar was molded entirely Ensure shaping indoor temperature at 350 DEG C or so in journey；
(6) laser beam is selectively sintered according to the information of cross section profile under control of the computer, metal dust Be sintered together under the bombardment of laser beam, and with following molded part adhesive, after ground floor powder fusing after, pass through Powder feeding mechanism lays second layer powder, and powder thickness is uniform and, such layer upon layer identical with ground floor thickness, until whole zero All sintering is completed part；
(7) after the completion of part sintering, it is incubated in 350 DEG C of environment in forming room and is cracked with preventing portion part for 48 hours, Insulation is begun to cool down to room temperature after terminating, and blow-on simultaneously takes out part after reclaiming unnecessary powder filler；
(8) part heat treatment；Part carries out vacuum heat after taking out, should with the remnants reduced during parts-moulding Power, improves the overall performance of part, Technology for Heating Processing：Be warming up to 720 DEG C with stove, be incubated 90min, cool to the furnace 100 DEG C with Come out of the stove after lower cooling；
(9) be computed with measurement, the shaping speed of the tube base part is 75cm3/ h, formed precision reaches+0.2mm, metallographic Tissues observed is uniform, the defect such as pore-free, crackle and no cofusing particle.
It should be noted that according to the various embodiments described above of the present invention, those skilled in the art are can to realize this hair completely The four corner of bright claim 1 and appurtenance, implementation process and the same the various embodiments described above of method；And the present invention is not detailed Elaboration partly belongs to techniques well known.
The above, part specific embodiment only of the present invention, but protection scope of the present invention is not limited thereto, and appoints What those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered Within protection scope of the present invention.

Claims (3)

1. a kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique, it is characterised in that：It is low activation including material Martensite steel microsphere powder, fine powder 200-400 mesh is 1~1.5 with the powder weight proportioning of meal 50-150 mesh, with preferable Compactedness；Using precinct laser fusion rapid molding method, laser power 20-300W, lasing beam diameter 70-135um, scanning speed Degree 500-2000mm/s, sweep span 35-120um, lift height 20-50um, powder preheat 150-300 DEG C, shaping speed 5- 20cm3/ h, argon gas is protected and pressure maintains 10-20mbar in forming room, and profiled part is manufactured after finishing in 250-400 DEG C of temperature The lower insulation of degree, to prevent from cracking, is finally heat-treated to the part for manufacturing, and to reduce residual stress, improves forming part The overall performance of part.
2. a kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique according to claim 1, its feature exists In：The profiled part manufacture is incubated more than 48 hours after finishing at 250-400 DEG C, prevents crackle.
3. a kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique according to claim 1, its feature exists In：The process of thermal treatment：720-760 DEG C is warming up to stove, be incubated 60-120min, then after cooling to less than 100 DEG C with the furnace Come out of the stove cooling, to reduce residual stress, improve the overall performance of profiled part.
CN201610947008.8A 2016-10-26 2016-10-26 A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique Active CN106493364B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610947008.8A CN106493364B (en) 2016-10-26 2016-10-26 A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610947008.8A CN106493364B (en) 2016-10-26 2016-10-26 A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique

Publications (2)

Publication Number Publication Date
CN106493364A CN106493364A (en) 2017-03-15
CN106493364B true CN106493364B (en) 2017-07-04

Family

ID=58322128

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610947008.8A Active CN106493364B (en) 2016-10-26 2016-10-26 A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique

Country Status (1)

Country Link
CN (1) CN106493364B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102151445B1 (en) 2017-08-30 2020-09-03 가부시키가이샤 소딕 Additive manufacturing apparatus and method for manufacturing three dimensional object
CN108504928B (en) * 2018-04-28 2020-05-22 苏州大学 Martensitic heat-resistant steel alloy powder and method for laser additive manufacturing by using same
CN110565002B (en) * 2019-10-17 2021-12-03 中国科学院合肥物质科学研究院 Selective laser melting additive manufacturing method suitable for oxide reinforced steel
CN111440994B (en) * 2020-04-29 2021-06-25 北京工业大学 Structure regulation and control method for selective laser melting of low-activation ferrite/martensite steel
CN112719296B (en) * 2020-12-29 2022-09-16 中国人民解放军陆军装甲兵学院 Method for regulating and controlling mechanical properties of 4Cr5MoSiV1 alloy steel
CN113322407B (en) * 2021-05-28 2021-12-07 西安建筑科技大学 Oxide-reinforced low-activation steel and manufacturing method thereof
CN113814394B (en) * 2021-09-28 2023-09-01 共享智能装备有限公司 Metal powder material for droplet jet printing and preparation method
CN114012085B (en) * 2021-11-10 2023-04-25 华南理工大学 Mixed powder for 3D printing and 3D printing method
CN115229175B (en) * 2022-07-31 2024-03-12 福州大学 3D printing forming method of steel particle reinforced tin-based composite material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101559540A (en) * 2009-05-27 2009-10-21 江苏大学 Application of laser in low activation martensitic steel welding and welding method
CN102382998A (en) * 2011-11-09 2012-03-21 北京有色金属研究总院 Method for preparing in situ titanium-based composite material and part
CN103160745A (en) * 2013-02-25 2013-06-19 宝钢特种材料有限公司 Large-tonnage high-Ta low-activation martensitic steel for nuclear fusion reactor and manufacturing method thereof
CN103949637A (en) * 2014-05-09 2014-07-30 张百成 Method for processing Ti-Ni memory alloy based on selective laser melting technology
CN105033255A (en) * 2015-07-31 2015-11-11 南京航空航天大学 Method for directly obtaining martensite die steel through laser 3D printing technology
DE102015000102A1 (en) * 2015-01-14 2016-07-14 Cl Schutzrechtsverwaltungs Gmbh Device for the generative production of three-dimensional components

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101559540A (en) * 2009-05-27 2009-10-21 江苏大学 Application of laser in low activation martensitic steel welding and welding method
CN102382998A (en) * 2011-11-09 2012-03-21 北京有色金属研究总院 Method for preparing in situ titanium-based composite material and part
CN103160745A (en) * 2013-02-25 2013-06-19 宝钢特种材料有限公司 Large-tonnage high-Ta low-activation martensitic steel for nuclear fusion reactor and manufacturing method thereof
CN103160745B (en) * 2013-02-25 2015-08-26 宝钢特钢有限公司 A kind of Large-tonnage high-Ta low-activation martensitic steel for nuclear fusion reactor and manufacture method thereof
CN103949637A (en) * 2014-05-09 2014-07-30 张百成 Method for processing Ti-Ni memory alloy based on selective laser melting technology
DE102015000102A1 (en) * 2015-01-14 2016-07-14 Cl Schutzrechtsverwaltungs Gmbh Device for the generative production of three-dimensional components
CN105033255A (en) * 2015-07-31 2015-11-11 南京航空航天大学 Method for directly obtaining martensite die steel through laser 3D printing technology

Also Published As

Publication number Publication date
CN106493364A (en) 2017-03-15

Similar Documents

Publication Publication Date Title
CN106493364B (en) A kind of low activation martensitic steel precinct laser fusion increasing material manufacturing technique
CN105803271B (en) A kind of aluminum-base nano composite material based on SLM shapings and preparation method thereof
Zaeh et al. Investigations on heat regulation of additive manufacturing processes for metal structures
CN110449581A (en) A kind of TiAl+Ti2The method of AlNb composite material Laser Melting Deposition preparation
CN104084584B (en) For the Laser Scanning of high temperature alloy structural member rapid shaping
CN102941343B (en) Quick manufacturing method of titanium-aluminum alloy composite part
CN107790720A (en) A kind of high temperature alloy increasing material manufacturing method
CN110405209A (en) The method in situ for reducing precinct laser fusion preparation titanium composite material residual stress
US20040056022A1 (en) Method and device for the selective laser sintering of metallic substances
CN110565002B (en) Selective laser melting additive manufacturing method suitable for oxide reinforced steel
CN101709468A (en) Method for rapidly preparing gradient metal ceramic composite material by laser induction hybrid cladding
CN112091217B (en) Method for manufacturing copper-tungsten material by adopting spherical tungsten powder laser 3D printing
Chen et al. Role of laser scan strategies in defect control, microstructural evolution and mechanical properties of steel matrix composites prepared by laser additive manufacturing
CN103266318B (en) A kind of laser melting coating laminated coating one step reinforcing process method based on different melting points
WO2019218560A1 (en) Titanium diboride-based multi-phase ceramic, preparation method therefor and application thereof
CN109590476A (en) The method that one-step method prepares high-compactness WRe/TZM gradient composites
CN107127343A (en) A kind of electron beam increasing material manufacturing method of nickel-base alloy structural member
CN104308161A (en) Preparation method of low-cost boron carbide/aluminum composite board
CN109396436A (en) A kind of pure titanium 3D printing increasing material manufacturing method
CN114378304A (en) Process method for preparing tungsten-based composite sheet by combining selective laser melting and hot isostatic pressing technology
CN106541137B (en) A kind of process weakening Electron Beam Selective Sintering buckling deformation
CN105798295A (en) Preparation method for molybdenum and molybdenum alloy part
CN103726046A (en) Method for preparing compound coatings through laser shock induced chemical reaction
CN115106540A (en) Tantalum-tungsten alloy product and preparation method thereof
CN107552785A (en) A kind of 3D printing, heat treatment integral processing method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant