CN106513689A - Method for improving turnout performance by adopting 3D printing technology - Google Patents

Method for improving turnout performance by adopting 3D printing technology Download PDF

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Publication number
CN106513689A
CN106513689A CN201610962390.XA CN201610962390A CN106513689A CN 106513689 A CN106513689 A CN 106513689A CN 201610962390 A CN201610962390 A CN 201610962390A CN 106513689 A CN106513689 A CN 106513689A
Authority
CN
China
Prior art keywords
printing
track switch
performance improvement
printing technique
technique according
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.)
Pending
Application number
CN201610962390.XA
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Chinese (zh)
Inventor
杨亮
王树国
肖俊恒
周正
徐宏超
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.)
Railway Engineering Research Institute of CARS
Original Assignee
Railway Engineering Research Institute of CARS
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 Railway Engineering Research Institute of CARS filed Critical Railway Engineering Research Institute of CARS
Priority to CN201610962390.XA priority Critical patent/CN106513689A/en
Publication of CN106513689A publication Critical patent/CN106513689A/en
Pending legal-status Critical Current

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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
    • 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
    • B22F7/08—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 with one or more parts not made from 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
    • B22F10/20—Direct sintering or melting
    • 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
    • B22F10/30—Process control
    • B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • 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
    • B22F10/60—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
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)
  • Powder Metallurgy (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention provides a method for improving the turnout performance by adopting the 3D printing technology, and belongs to application of the 3D printing technology to the field of railways. The method is characterized in that the upper surfaces of turnout rail parts (switch rails, wing rails and the like) which are concentrated in stress and easy to damage are cut by certain thicknesses; a high-toughness and high-abrasion-resistant alloy material is printed by adopting the 3D printing technology; and the purpose of improving the turnout performance and prolonging the service life is fulfilled. The method comprises the following steps: cutting of a turnover rail part; cleaning of the turnover rail part; preparation of printing equipment; collection of information about the turnover rail part; acquisition of a printing outline; planning of a printing path; laser melting; heat treatment; and surface grinding and polishing. The method provided by the invention has the advantages that the material consumption is low, the economic benefit is high; and the service life of the improved turnover rail part is prolonged.

Description

A kind of method of employing 3D printing technique to track switch performance improvement
Technical field
The present invention is 3D printing technique in the application of railway territory, improves track switch property specially using 3D printing technique Can, increase its service life.
Background technology
Track switch is important product in track component, and most flimsy product.Due to train pass through track switch when and car Wheel tread is little, and normal pressure and impulsive force are concentrated, and abrasion easily occurs, falls the generation of the trauma such as block situation, causes the life-span generally short Temporarily, comfortableness and the safety of train are had a strong impact on.As its cost is high, change difficult, be that current railway territory is thorny Problem.
The appearance of 3D printing technique, is railway turnout rail part（Tongue, wing rail etc.）Surface property improve there is provided a kind of new Effective means.3D printing is under the effect of laser high-energy-density to carry out metallurgical process to material surface, and the tissue of formation is fine and closely woven, Cladding compositions, thickness are controllable, and thermal deformation is little.It is high, resistance to that certain thickness obdurability is printed on track switch matrix using this technology The good coating of mill property, to reducing track switch cost, improving service life has significant economic benefit and realistic meaning.
The content of the invention
A kind of method that employing 3D printing technique improves performance to track switch, comprises the following steps：
Step one, selection railway turnout rail part, cut to its upper surface；
Surface is cleared up after step 2, cutting, remove dregs and dirt, cleaning does not totally affect newly to grow part and matrix Binding ability；
Step 3, printing device are ready；
Step 4, rail member is placed in laboratory table, carries out information gathering with spatial digitizer, obtain the three-dimensional after rail member cutting Outline data；
Step 5, the profile of collection are compared with complete rail member profile, obtain the wheel of 3D printing part by Boolean calculation It is wide；
Step 6, the profile of 3D printing part obtain the fortune of 3D printing mechanical hand Jing after print software analysis, calculating, path planning Dynamic rail mark；
Step 7,3D printing lf, carry out localised protection with noble gases during 3D printing, prevent alloy material by air oxygen Change；
Step 8, heat treatment, rail member entirety normalizing, crystal grain thinning eliminate internal stress, improve toughness；
Step 9, surface polishing, go flash removed to improve fineness.
A kind of method of the aforesaid 3D printing technique to track switch performance improvement, can choose waste and old track switch, and new life also may be selected The track switch of product, as long as track switch bottom matrix is complete.
A kind of method of the aforesaid 3D printing technique to track switch performance improvement, 3D printing equipment by laser instrument, mechanical hand, give The compositions such as powder device, spatial digitizer, workbench, gas shield equipment.
A kind of method of the aforesaid 3D printing technique to track switch performance improvement, can be ferrum from the metal dust of 3D printing The alloys such as base, Ni-based or titanio.
A kind of method of the aforesaid 3D printing technique to track switch performance improvement, cutting way are cut using line, thickness of cutting 6-8mm。
A kind of method of the aforesaid 3D printing technique to track switch performance improvement, the cleaning of rail member after cutting adopt high pressure water flushing Wash, blower fan is dried up.
A kind of method of the aforesaid 3D printing technique to track switch performance improvement, printing side of the 3D printing from synchronous powder feeding system Formula.
The invention has the beneficial effects as follows：Method is easy, and material usage is few, and high financial profit, the railway turnout rail part after improvement are strong Toughness, wearability strengthen, and service life is improved.
Description of the drawings
Fig. 1 is the flow chart that the present invention is implemented.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further details.
The method that a kind of employing 3D printing technique of the present invention improves performance to track switch, is completed by following steps：
Step one, selection railway turnout rail part, are cut to its upper surface using wire cutting, cutting depth 6-8mm；
Surface is cleared up after step 2, cutting, remove dregs and dirt, using high pressure water flushing wash clean, then blown with blower fan It is dry；
Step 3, printing device are ready；
Step 4, rail member is placed in laboratory table, carries out information gathering with spatial digitizer, obtain the three-dimensional after rail member cutting Data；
Step 5, the profile of collection are compared with complete rail member profile, obtain the wheel of 3D printing part by Boolean calculation It is wide；
Step 6, the profile of 3D printing part obtain the fortune of 3D printing mechanical hand Jing after print software analysis, calculating, path planning Dynamic rail mark；
Step 7,3D printing lf, as one kind preferably, the laser instrument of 3D printer selects optical fiber laser, during printing Nitrogen localised protection is used, alloy material oxidation by air is prevented；
After step 8, printing, the normalizing of rail member entirety, crystal grain thinning, eliminate internal stress, improve toughness；
Step 9, surface sanding and polishing, remove flash removed, improve fineness.
The present invention provides a kind of track switch performance improvement method, and the method is only to the high property of the flimsy upper surface of railway turnout rail part Energy alloy is replaced, and bottom matrix is not processed, and this method material usage is few, and high financial profit, the rail member after improvement use the longevity Life is improved.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should Understand, the invention is not limited in any way for above-described embodiment, it is all to be obtained by the way of equivalent or equivalent transformation Technical scheme, all falls within protection scope of the present invention.

Claims (8)

1. method of a kind of employing 3D printing technique to track switch performance improvement, it is characterised in that comprise the following steps：
Step one, selection railway turnout rail part, cut to its upper surface；
Surface is cleared up after step 2, cutting, remove dregs and dirt, cleaning does not totally affect newly to grow part and matrix Binding ability；
Step 3, printing device are ready；
Step 4, rail member is placed in laboratory table, carries out information gathering with spatial digitizer, obtain the three-dimensional after rail member cutting Outline data；
Step 5, the profile of collection are compared with complete rail member profile, obtain the wheel of 3D printing part by Boolean calculation It is wide；
Step 6, the profile of 3D printing part obtain the fortune of 3D printing mechanical hand Jing after print software analysis, calculating, path planning Dynamic rail mark；
Step 7,3D printing lf, carry out localised protection with noble gases during 3D printing, prevent alloy material by air oxygen Change；
Step 8, heat treatment, rail member entirety normalizing, crystal grain thinning eliminate internal stress, improve toughness；
Step 9, surface polishing, go flash removed to improve fineness.
2. method of a kind of 3D printing technique according to claim 1 to track switch performance improvement, it is characterised in that can Waste and old track switch is chosen, the track switch of new production also may be selected, track switch bottom matrix is complete.
3. method of a kind of 3D printing technique according to claim 1 to track switch performance improvement, it is characterised in that 3D beats Printing apparatus are made up of laser instrument, mechanical hand, powder feeder, spatial digitizer, workbench, gas shield equipment etc..
4. method of a kind of 3D printing technique according to claim 1 to track switch performance improvement, it is characterised in that select The metal dust of 3D printing can be iron-based, Ni-based or titanium-base alloy.
5. a kind of method of the 3D printing technique according to claim 1 to track switch performance improvement, it is characterised in that cutting Mode is cut using line, thickness of cutting 6-8mm.
6. a kind of method of the 3D printing technique according to claim 1 to track switch performance improvement, it is characterised in that cutting The cleaning of rail member adopts high pressure water washing, blower fan to dry up afterwards.
7. method of a kind of 3D printing technique according to claim 1 to track switch performance improvement, it is characterised in that 3D beats Printing type of the print using synchronous powder feeding system.
8. a kind of method of the 3D printing technique according to claim 1 to track switch performance improvement, it is characterised in that inertia Gas may be selected nitrogen, argon etc..
CN201610962390.XA 2016-11-04 2016-11-04 Method for improving turnout performance by adopting 3D printing technology Pending CN106513689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610962390.XA CN106513689A (en) 2016-11-04 2016-11-04 Method for improving turnout performance by adopting 3D printing technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610962390.XA CN106513689A (en) 2016-11-04 2016-11-04 Method for improving turnout performance by adopting 3D printing technology

Publications (1)

Publication Number Publication Date
CN106513689A true CN106513689A (en) 2017-03-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110007643A (en) * 2018-12-21 2019-07-12 中铁宝桥（南京）有限公司 One kind being used for switch manufacture process automation online detection instrument and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004218035A (en) * 2003-01-17 2004-08-05 Honda Motor Co Ltd Production method of foam-filled structure with closed cross-section
CN101109031A (en) * 2007-08-17 2008-01-23 沈阳大陆激光成套设备有限公司 Laser alloying strengthening technique for railway runway switch
CN101108447A (en) * 2006-07-20 2008-01-23 西北工业大学 Part surface repair method based on laser fast forming machine
CN101338425A (en) * 2008-08-07 2009-01-07 沈阳大陆激光成套设备有限公司 Laser fusing and coating process of wear resistant and anticorrosion alloy coatings at surface of slide plate of railroad turnout
CN105695988A (en) * 2016-04-11 2016-06-22 南京辉锐光电科技有限公司 Repair device and method for railway vehicle wheels and adopted iron-base alloy powder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004218035A (en) * 2003-01-17 2004-08-05 Honda Motor Co Ltd Production method of foam-filled structure with closed cross-section
CN101108447A (en) * 2006-07-20 2008-01-23 西北工业大学 Part surface repair method based on laser fast forming machine
CN101109031A (en) * 2007-08-17 2008-01-23 沈阳大陆激光成套设备有限公司 Laser alloying strengthening technique for railway runway switch
CN101338425A (en) * 2008-08-07 2009-01-07 沈阳大陆激光成套设备有限公司 Laser fusing and coating process of wear resistant and anticorrosion alloy coatings at surface of slide plate of railroad turnout
CN105695988A (en) * 2016-04-11 2016-06-22 南京辉锐光电科技有限公司 Repair device and method for railway vehicle wheels and adopted iron-base alloy powder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110007643A (en) * 2018-12-21 2019-07-12 中铁宝桥（南京）有限公司 One kind being used for switch manufacture process automation online detection instrument and method
CN110007643B (en) * 2018-12-21 2024-01-02 中铁宝桥（南京）有限公司 Automatic on-line detection equipment and method for turnout manufacturing process

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Address after: 100081 Da Liu Shu 2, Haidian District, Beijing

Applicant after: Railway Construction Research Institute of China Railway Research Institute Group Co., Ltd.

Address before: 100081 Da Liu Shu 2, Haidian District, Beijing

Applicant before: Railway Construction Institute of China Academy of Railway Sciences

WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170322