CN105618752B - A kind of increasing material manufacturing method of online build-in function device - Google Patents

A kind of increasing material manufacturing method of online build-in function device Download PDF

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CN105618752B
CN105618752B CN201610032033.3A CN201610032033A CN105618752B CN 105618752 B CN105618752 B CN 105618752B CN 201610032033 A CN201610032033 A CN 201610032033A CN 105618752 B CN105618752 B CN 105618752B
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headspace
layer
accumulation
laser
filling
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CN105618752A (en
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谭华
胡广
陈静
林鑫
黄卫东
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • 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
    • B22F10/20—Direct sintering or melting
    • B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • 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
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40—Radiation means
    • B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • 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
    • B22F12/90—Means for process control, e.g. cameras or sensors
    • 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

Abstract

A kind of increasing material manufacturing method of online build-in function device, the present invention realize the increasing material manufacturing with build-in function device part based on increases material manufacturing technology and online installation.By planning the region for needing to lay device, three-dimensional CAD model is established, after headspace is shaped by the way of successively accumulating, function element is put into wherein, then completes post forming again, it is final to obtain the part for including build-in function device.The present invention realizes that function element is installed online, thus simplify the structural design of fittings of traditional subsequent installation device mode, avoid the space requirement of subsequent installation process, enhance structural compactness, manufacturing process and manufacturing cycle are reduced, while laser beam and rapid melting and process of setting during material interaction, tiny, uniform, fine and close tissue can be obtained, the adverse effect of component segregation is eliminated, so as to improve the mechanical property of material.

Description

A kind of increasing material manufacturing method of online build-in function device
Technical field
The present invention relates to equipment manufacturing, machine-building, material forming field, especially a kind of online build-in function device Increasing material manufacturing method.
Background technology
Increases material manufacturing technology refers to the section that direct manufacturing parts based on discrete-accumulation principle, are driven by part three-dimensional data Learn technical system.Based on different principle of classification and understanding mode, increases material manufacturing technology also has rapid prototyping, Quick-forming, fast A variety of appellations such as fast manufacture, 3D printing.The concept of increasing material manufacturing be using material addition as essential characteristic, using direct manufacturing parts as Target.If classified according to the type and mode of rapidoprint, metal forming, nonmetallic shaping, biomaterial can be divided into again Shaping etc..The principle of increases material manufacturing technology is：Generate the three-dimensional CAD model of part in a computer first, then press model Certain thickness slicing delamination, i.e., the three-dimensional shape information of part is converted into a series of two-dimensional silhouette information, then calculated Under the control of machine, using the high energy beam such as synchronous powder or silk material feeding, powdering deposition, fusion sediment the methods of, according to two dimension take turns Wide information is successively accumulated, and ultimately forms Three-dimensional Entity Components.So-called high energy beam includes beam-plasma, electron beam, laser beam etc..Work( Energy device is the basis of modern smart machine operation, non-electric charge quantity signalling such as is converted into electric quantity signal with sensor, so as to original Beginning information accurately, reliable capture and change.However, in order to realize the installation of function element, it will usually increase the body of structure Product.Many sensors or functional part are all the row installations again after component manufacture terminates at present.Due to the demand of installation procedure, Many component structurals can all consider the design of headspace, and this will certainly add integrally-built volume, reduce structure Compactedness, it is unfavorable for the miniaturization of system structure design.With China's industrial expansion, device miniaturization function is integrated to be Where trend, yet with the limitation of manufacturing technology, difficulty is added for the realization of this target.Therefore, there is an urgent need to new Mentality of designing and manufacture method solve this problem.
The content of the invention
To overcome the compactedness of structure present in prior art poor, the larger deficiency of overall structure volume, the present invention carries A kind of increasing material manufacturing method of online build-in function device is gone out.
The present invention detailed process be：
Step 1, the pretreatment of material.Described pretreatment includes the drying to alloy powder and the surface to substrate Processing.
Step 2, protection gas is filled with Processing Room.To inert gas argon gas is poured in Processing Room, make the atmosphere in operating room Oxygen content is less than 50ppm.
Step 3, part C AD model programs are inputted.
Step 4, stack shaping technological parameter is adjusted.Described forming parameters include laser power, spot diameter, Sweep speed, powder sending quantity and overlapping rate.When used moulding material is powder, laser power 2300W, spot diameter For 2mm, sweep speed 15mm/s, powder sending quantity 13g/min, overlapping rate 40%.When used moulding material is silk material, Described laser power is 1200W, spot diameter 3.8mm, sweep speed 10mm/s, wire feed rate 15mm/s, silk Inclination angle be 25 °, overlapping rate 40%.
Step 5, the foundation of part is accumulated.
The accumulation of part foundation is implemented by way of successively accumulating according to the stack shaping technological parameter of setting；Heap In product：When used moulding material is powder, powder is synchronously sent into and laser beam and molten bath reciprocation；When used When moulding material is silk material, silk material is synchronously sent into and laser beam and molten bath reciprocation.
In stack shaping part foundation first layer, outside the bottom of accumulating part foundation on substrate first Shape profile；The bottom of filling accumulation part in the bottom appearance profile of the part foundation accumulated and, in filling, Laser beam is along 45 ° of direction shuttle-scannings, until completing the accumulation of the part foundation bottom；Accumulate part foundation the Two layers.During accumulation, accumulate the second layer appearance profile of part foundation first.The scanning direction of laser is adjusted, starts to fill out Zeroize the part foundation second layer.Described laser scanning direction is perpendicular to scanning direction during filling accumulation preceding layer.Weight The process of the multiple above-mentioned appearance profile-- adjustment laser scanning direction-- filling accumulation for accumulating part foundation part, Until part to be accumulated to the height for having headspace of design, the accumulation of part foundation is completed.
Step 6, accumulation has headspace part.Described headspace is to lay the space that function element is reserved.
After the accumulation of part foundation is completed, implement to reserve by way of successively accumulating according to the parameter of setting The accumulation of space segment；When used moulding material is powder, powder is synchronously sent into and laser beam and molten bath reciprocation； When used moulding material is silk material, silk material is synchronously sent into and laser beam and molten bath reciprocation；
In stack shaping headspace segments first layer, accumulate the first layer profile of part headspace part first Profile；The of filling accumulation part headspace part in the first layer appearance profile of the part headspace accumulated and One layer, in filling, laser beam is along 45 ° of direction shuttle-scannings, until completing the first layer of the part headspace part Accumulation.When reaching the position of headspace shown in figure, stop powder feeding or wire feed, and close laser；When laser head pass through it is pre- After spacing, start powder feeding or wire feed, and open laser.Accumulate part headspace portion of second layer.During accumulation, accumulate first Go out the second layer appearance profile of part headspace part.The scanning direction of laser is adjusted, starts to fill part headspace portion The second layer divided.Described laser scanning direction is perpendicular to scanning direction during filling accumulation preceding layer.Accumulate described Part headspace part the second layer appearance profile in filling accumulation part headspace portion of second layer.Shown in arrival During the position of headspace, stop powder feeding or wire feed, and close laser；After laser head is by headspace, start powder feeding or Wire feed, and open laser.Repeat the above-mentioned appearance profile-- adjustment laser scanning for accumulating part headspace part The process-- of direction-- filling accumulation reserves the process of headspace, until having headspace by what part was accumulated to design Height, complete the accumulation of part headspace part.
Step 7, function element is laid.Function element described in the present embodiment is sensor.
After the stack shaping of the headspace is completed, function element is placed in headspace by design requirement.
Step 8, the final stack shaping of part.
Implement the final stack shaping of part by way of successively accumulating according to the parameter of setting.In accumulation：When being adopted When moulding material is powder, powder is synchronously sent into and laser beam and molten bath reciprocation；When used moulding material is During silk material, silk material is synchronously sent into and laser beam and molten bath reciprocation.
In the stack shaping, angle at 45 ° between each layer filling line accumulated.
Accumulate the first layer appearance profile of the final stack shaping of part first；Finally accumulated in the part that accumulated The first layer of filling accumulation part in the appearance profile of shaping, in filling, laser beam is along 45 ° of direction shuttle-scannings, until complete Into the accumulation of the first layer of the final stack shaping of the part.The second layer of the part finally shaped is accumulated, accumulates zero first The second layer appearance profile that part finally shapes.The scanning direction of laser beam is adjusted, starts to fill the second layer of final formation of parts. Described laser scanning direction is perpendicular to scanning direction during filling accumulation preceding layer.In the second layer profile accumulated and Filling accumulation part finally accumulates the second layer of part in profile.Repeat the above-mentioned profile wheel for accumulating the final stack shaping of part The process of wide-- adjustment laser scanning direction-- filling accumulation, until completing the final stack shaping of part.Built in realization The once overall manufacture of function element structure.
So far, the increasing material manufacturing of online build-in function device is completed.
When closing headspace, if function element is rapid wear device, substrate is placed on the function element surface, and at this Stack shaping on substrate, until closing headspace.
The present invention is based on increases material manufacturing technology.The three of engineering structure are realized due to increasing material forming technique using successively accumulation Dimension printing, shape and complexity to part almost do not require, therefore, will just need to lay device at the beginning of product design Regional planning is good, establishes three-dimensional CAD model, and headspace is formed into parts, and it is not closed when, function element is put into, Then proceed to forming process.Realizing that function element installs online, while enhancing structure compactedness, also meeting overall structure To the high request of material mechanical performance.The present invention can not only use laser beam directly to be manufactured for the high energy beam of thermal source, also can Use using electron beam, plasma or ion beam as the direct manufacture method of the high energy beam of thermal source, additionally it is possible to using fused glass pellet Technology (FDM) manufactures.The function element includes various kinds of sensors, functional partses.
The online installation of function element during the present invention can achieve a shape manufacturing, simplify the mounting design of function element And step, save into the inner space of structure.
Compared with prior art, the present invention has advantages below
1st, traditional installation method is after part is manufactured, then in installation function device thereon, therefore, in order to meet The requirement of subsequent installation process, it is necessary to enough operating spaces are reserved in component structural design, therefore reduce parts knot The compactedness of structure, and the present invention realizes the online installation of function element during part increasing material manufacturing, simplifies traditional structure Design, avoids the design of subsequent installation operating space, so as to significantly improve compact-sized degree, is advantageous to the miniaturization of part Design and manufacture；
2nd, the mechanical property of material is significantly improved.Using rapid melting when laser beam and material interaction and solidified Journey, tiny, uniform, fine and close tissue can be obtained, eliminate the adverse effect of component segregation, so as to improve the mechanical property of material Can, high request of the engineering design to material property can be met while realizing built in function element.Table 1 is Ti-6Al-4V LSF part mechanical performance datas, there it can be seen that the mechanical property of LSF parts has reached forging standard.
The LSF part tensile property results of table 1
3rd, the installation of function element is completed online, reduces manufacturing process and manufacturing cycle, is saved material, is reduced cost.Table 2 It is the Integrated comparative of LSF technologies and conventional cast and FMT, there it can be seen that the technology is applied to aviation dish type zero During part, it is superior to casting and FMT in stock utilization, lead time, totle drilling cost etc..
The LSF technologies of table 2 and forging and the Integrated comparative (aviation disk-shaped part) of foundry engieering
Forming technology LSF Forging Casting
Stock utilization 2/3 ＜ 1/10 1/5
Design modification time 1~2 day 6 months 3 months
The fabrication cycles cycle 1~2 day 4 months 6~12 months
Loss Argon gas Mould Casting mold, mold, casting system
Repair rate It is low It is low It is high
Expense It is low It is high In
The present invention proposes the method using increasing material manufacturing, the online installation function device in forming process, so as to realize work( The new approaches of monolithic molding manufacture of the installation of energy device and overall structure, structural volume increase caused by avoiding subsequent installation.
Brief description of the drawings
Fig. 1 is the schematic diagram of present invention accumulation part foundation；
Fig. 2 is the schematic diagram of present invention accumulation headspace part；
Fig. 3 is the schematic diagram of final stack shaping of the invention；
Fig. 4 is the flow chart of the present invention.In figure：
1. laser beam；2. powder；3. function element.
Embodiment
Embodiment one
The present embodiment is a kind of increasing material manufacturing method of online build-in function device.Used moulding material is powder, It is to manufacture to realize by powder feeding formula laser gain material.
The present embodiment is the LSF-V laser solid formings established in solidification technology National Key Laboratory of Northwestern Polytechnical University Completed in equipment, the equipment is by CP 4kW CO2Laser, numerical control table, NC table, inert atmosphere Processing Room, high accuracy adjustable are sent Powder device and coaxial powder-feeding nozzle composition.
The detailed process of the present embodiment is：
Step 1, the pretreatment of material.Described pretreatment includes the drying to alloy powder and the surface to substrate Processing.
Alloy powder used in the present embodiment is spherical Ti-6Al-4V alloy powders, and particle diameter is 43~246 μm.The alloy The chemical composition of powder meets the requirement of GJB2921-1997 standards.The alloy powder is dried under 120 DEG C of vacuum conditions Dry-cure, to reduce the influence that the moisture absorption may be brought to forming quality.Described substrate is Ti-6Al-4V sheet materials, physical dimension For 140mm × 50mm × 6mm；It is clear successively with absolute ethyl alcohol and acetone after with sand paper, the oxide layer of the substrate surface is polished off Wash clean.
Step 2, protection gas is filled with Processing Room.To inert gas argon gas is poured in Processing Room, make the atmosphere in operating room Oxygen content is less than 50ppm.
Step 3, part C AD model programs are inputted.
Step 4, the technological parameter of stack shaping is adjusted.It is straight that described forming parameters include laser power, hot spot Footpath, sweep speed, powder sending quantity and overlapping rate.Wherein：Described laser power is 2300W, spot diameter 2mm, sweep speed 15mm/s, powder sending quantity 13g/min, overlapping rate 40%.
Step 5, the foundation of part is accumulated.
Start to accumulate according to the parameter of setting.Stack shaping is started by programme-control Digit Control Machine Tool.In accumulation, laser beam 1 feeding synchronous with powder.In stack shaping part foundation first layer, accumulate part foundation on substrate first Bottom appearance profile；The bottom of filling accumulation part in the bottom appearance profile of the part foundation accumulated and, In filling, laser beam is along 45 ° of direction shuttle-scannings, until completing the accumulation of the part foundation bottom；Taken in accumulation Rate is connect as 40%.
Accumulate the part foundation second layer.During accumulation, accumulate the second layer appearance profile of part foundation first. The scanning direction of laser is adjusted, starts to fill the part foundation second layer.Described laser scanning direction is perpendicular to filling Accumulate scanning direction during preceding layer.
Repeat the above-mentioned appearance profile-- adjustment laser scanning direction-- filling for accumulating part foundation part The process of accumulation, until part to be accumulated to the height for having headspace of design, complete the accumulation of part foundation.
After the accumulation of part foundation is completed, starting part has the accumulation of headspace part.
Step 6, the headspace part of part is accumulated.Described headspace is to lay the sky that function element is reserved Between.
Start to accumulate according to the parameter of setting.Stack shaping is started by programme-control Digit Control Machine Tool.In accumulation, laser beam 1 feeding synchronous with powder.In stack shaping headspace segments first layer, accumulate the of part headspace part first One layer appearance profile；The filling accumulation part headspace in the first layer appearance profile of the part headspace accumulated and Partial first layer, in filling, laser beam is along 45 ° of direction shuttle-scannings, until completing the part headspace part The accumulation of first layer.When reaching the position of headspace shown in figure, stop powder feeding and close laser；When laser head pass through it is pre- After spacing, get started powder feeding and open laser.
Accumulate part headspace portion of second layer.During accumulation, accumulate the second layer of part headspace part first Appearance profile.The scanning direction of laser is adjusted, starts to fill the second layer of part headspace part.Described laser scanning side To the scanning direction being perpendicular to when preceding layer is accumulated in filling.Outside the second layer of the part headspace part accumulated and Filling accumulation part headspace portion of second layer in shape profile.When reaching the position of headspace shown in figure, stop sending Powder and closing laser；After laser head is by headspace, gets started powder feeding and open laser.
The above-mentioned appearance profile for accumulating part headspace part-- the adjustment laser scanning direction of repetition-- The process-- of filling accumulation reserves the process of headspace, until part is accumulated to the height for having headspace of design, Complete the accumulation of part headspace part.
Step 7, function element is laid.Function element described in the present embodiment is sensor.
After the stack shaping of the headspace is completed, function element 3 is placed in headspace by design requirement, As shown in Figure 2.
Step 8, the final stack shaping of part.
Start to accumulate according to the parameter of setting.Final stack shaping is started by programme-control Digit Control Machine Tool.In accumulation, swash Light beam 1 is synchronous with powder to be sent into.Accumulate the first layer appearance profile of the final stack shaping of part first；Accumulate what is described The first layer of filling accumulation part in the appearance profile of the final stack shaping of part, in filling, laser beam is reciprocal along 45 ° of directions Scanning, until completing the accumulation of the first layer of the final stack shaping of part.
The second layer of the part finally shaped is accumulated, accumulates the second layer appearance profile that part finally shapes first.Adjust The scanning direction of whole laser beam, start to fill the second layer of final formation of parts.Described laser scanning direction, which is perpendicular to, to be filled out Fill scanning direction during accumulation preceding layer.The final accumulation portion of filling accumulation part in second layer appearance profile accumulated and The second layer divided.
Repeat the above-mentioned appearance profile-- adjustment laser scanning direction-- filling for accumulating the final stack shaping of part The process of accumulation, complete the stack shaping of part., it is necessary to place one piece on function element surface in this part banking process The big substrate with headspace etc., as the device of defencive function device, avoids function element from damaging.
Described laser power is 2300W, spot diameter 2mm, sweep speed 12mm/s, powder sending quantity 12g/ Min, overlapping rate 40%.
In the stack shaping, angle at 45 ° between each layer filling line accumulated.
Example two
The present embodiment is a kind of increasing material manufacturing method of online build-in function device.Used moulding material is silk material, It is to manufacture to realize by wire feed formula laser gain material.
Step 1, the pretreatment of material.Described pretreatment is the surface treatment to substrate.
Silk material used in the present embodiment is TC4, a diameter of 1.2mm.Substrate used is TC4 sheet materials, physical dimension For 140mm × 50mm × 6mm；It is clear successively with absolute ethyl alcohol and acetone after with sand paper, the oxide layer of the substrate surface is polished off Wash clean.
Step 2, protection gas is filled with Processing Room.To inert gas argon gas is poured in Processing Room, make the atmosphere in operating room Oxygen content is less than 0.0050%.
Step 3, the program finished according to parts CAD model is inputted into the computer of laser solid forming equipment.
Step 4, the technological parameter of stack shaping is adjusted.It is straight that described forming parameters include laser power, hot spot Footpath, sweep speed, wire feed rate and overlapping rate.Wherein：Described laser power is 1200W, spot diameter 3.8mm, is swept It is 10mm/s to retouch speed, and wire feed rate 15mm/s, the inclination angle of silk is 25 °, overlapping rate 40%.It is determined that the stem elongation of silk is 10mm；It is then determined that the position of light and silk, makes the tip of silk just into hot spot edge；The position of base material is finally determined, in order to Ensure that just fusing just soaks with base material at welding wire tip, there is gap between silk and base material, to prevent silk from being scraped with base material, the present embodiment In, the gap between silk and base material is 1mm.
Step 5, the foundation of part is accumulated.
Step 6, the headspace part of part is accumulated.
Step 7, function element is laid.
Step 8, the final stack shaping of part.
The specific process of described step 5 to step 8 is identical with process in embodiment 1.Described headspace be for Lay the space that function element is reserved；Function element described in the present embodiment is sensor.The laser work(of stack shaping Rate is 1200W, spot diameter 3.8mm, sweep speed 10mm/s, and wire feed rate 15mm/s, the inclination angle of silk is 25 °, is taken Rate is connect as 40%.

Claims (3)

  1. A kind of 1. increasing material manufacturing method of online build-in function device, it is characterised in that detailed process is：
    Step 1, the pretreatment of material：Described pretreatment is the surface treatment to substrate；
    Step 2, it is filled with protection gas：To inert gas argon gas is filled with Processing Room, it is less than the atmosphere oxygen content in Processing Room 50ppm；
    Step 3, part C AD model programs are inputted；
    Step 4, the technological parameter of stack shaping is adjusted：Described forming parameters include laser power, spot diameter, swept Retouch speed, powder sending quantity or wire feed rate and overlapping rate；
    When used moulding material is powder, laser power 2300W, spot diameter 2mm, sweep speed is 15mm/s, powder sending quantity 13g/min, overlapping rate 40%；
    When used moulding material is silk material, described laser power is 1200W, spot diameter 3.8mm, and scanning is fast Spend for 10mm/s, wire feed rate 15mm/s, the inclination angle of silk is 25 °, overlapping rate 40%；
    Step 5, the foundation of part is accumulated：Implemented according to the stack shaping technological parameter of setting by way of successively accumulating The accumulation of part foundation；In accumulation：When used moulding material is powder, powder synchronously be sent into laser beam and melt Pond reciprocation；When used moulding material is silk material, silk material is synchronously sent into and laser beam and molten bath reciprocation；
    Step 6, accumulation has headspace part；After the accumulation of part foundation is completed, passed through according to the parameter of setting The mode successively accumulated implements the accumulation of headspace part；When used moulding material is powder, powder is synchronously sent into With laser beam and molten bath reciprocation；When used moulding material is silk material, silk material is synchronously sent into and laser beam and molten bath Reciprocation；
    In stack shaping headspace segments first layer, accumulate the first layer profile wheel of part headspace part first It is wide；The filling accumulation part headspace part in the first layer appearance profile of the part headspace part accumulated and First layer, in filling, laser beam is along 45 ° of direction shuttle-scannings, until completing the first layer of the part headspace part Accumulation；When reaching the position of headspace, stop powder feeding or wire feed, and close laser；When laser head passes through headspace Afterwards, start powder feeding or wire feed, and open laser；Accumulate part headspace portion of second layer；During accumulation, accumulate part first Second layer appearance profile of headspace part；The scanning direction of laser is adjusted, starts to fill the of part headspace part Two layers；Described laser scanning direction is perpendicular to scanning direction during filling accumulation preceding layer；In the part accumulated and Filling accumulation part headspace portion of second layer in second layer appearance profile of headspace part；Reach headspace During position, stop powder feeding or wire feed, and close laser；After laser head is by headspace, start powder feeding or wire feed, and open Laser；Repeat the above-mentioned appearance profile-- adjustment laser scanning direction-- filling for accumulating part headspace part The process of accumulation-- reserves the process of headspace, until part to be accumulated to the height for having headspace of design, completes The accumulation of part headspace part；
    Step 7, function element is laid；After the stack shaping of the headspace is completed, laser is out of service, will by design Ask and function element is placed in headspace；
    Step 8, the final stack shaping of part；Implement the final heap of part by way of successively accumulating according to the parameter of setting Product shaping；In accumulation：When used moulding material is powder, powder is synchronously sent into and laser beam and molten bath reciprocation； When used moulding material is silk material, silk material is synchronously sent into and laser beam and molten bath reciprocation；
    When closing headspace, if function element is consumable accessory, substrate is placed on the function element surface, and on the substrate Stack shaping, until closing headspace；
    In the final stack shaping, angle at 45 ° between each layer filling line accumulated；
    So far, the increasing material manufacturing of online build-in function device is completed.
  2. 2. the increasing material manufacturing method of online build-in function device as claimed in claim 1, it is characterised in that in stack shaping part During foundation first layer, accumulate the bottom appearance profile of part foundation on substrate first；Accumulate what is described The bottom of filling accumulation part in the bottom appearance profile of part foundation, in filling, laser beam is back and forth swept along 45 ° of directions Retouch, until completing the accumulation of the part foundation bottom；Accumulate the part foundation second layer；During accumulation, accumulate first Go out the second layer appearance profile of part foundation；The scanning direction of laser is adjusted, starts to fill the part foundation second layer； Described laser scanning direction is perpendicular to scanning direction during filling accumulation preceding layer；Repetition is above-mentioned to accumulate part basic courses department Divide the process of the appearance profile of part-- adjustment laser scanning direction-- filling accumulation, until part is accumulated into design There is the height of headspace, complete the accumulation of part foundation.
  3. 3. the increasing material manufacturing method of online build-in function device as claimed in claim 1, it is characterised in that accumulate part first First layer appearance profile of final stack shaping；Heap is filled in the appearance profile of the final stack shaping of part accumulated and The first layer of product part, in filling, laser beam is along 45 ° of direction shuttle-scannings, until completing the final stack shaping of part First layer accumulation；The second layer of the part finally shaped is accumulated, accumulates the second layer profile that part finally shapes first Profile；The scanning direction of laser beam is adjusted, starts to fill the second layer of final formation of parts；Described laser scanning direction is vertical Directly scanning direction when preceding layer is accumulated in filling；Filling accumulation part is final in second layer appearance profile accumulated and Accumulate the second layer of part；Repeat the above-mentioned appearance profile-- adjustment laser scanning side for accumulating the final stack shaping of part The process of accumulation is filled to--, until completing the final stack shaping of part.
CN201610032033.3A 2016-01-18 2016-01-18 A kind of increasing material manufacturing method of online build-in function device Active CN105618752B (en)

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