CN104972186A - Method for manufacturing gradient composite electrode for electrical spark rough machining and electrical spark finish machining for laser solid forming - Google Patents
Method for manufacturing gradient composite electrode for electrical spark rough machining and electrical spark finish machining for laser solid forming Download PDFInfo
- Publication number
- CN104972186A CN104972186A CN201510421794.3A CN201510421794A CN104972186A CN 104972186 A CN104972186 A CN 104972186A CN 201510421794 A CN201510421794 A CN 201510421794A CN 104972186 A CN104972186 A CN 104972186A
- Authority
- CN
- China
- Prior art keywords
- powder
- sic
- laser
- electrode
- solid forming
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 238000010099 solid forming Methods 0.000 title claims abstract description 16
- 238000003754 machining Methods 0.000 title abstract description 10
- 238000000034 method Methods 0.000 title abstract description 10
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 239000000843 powder Substances 0.000 claims abstract description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims description 75
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 22
- 238000010892 electric spark Methods 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 16
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 14
- 230000032798 delamination Effects 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 5
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000009689 gas atomisation Methods 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000011859 microparticle Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 229910002804 graphite Inorganic materials 0.000 abstract description 3
- 239000010439 graphite Substances 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 abstract 3
- 238000000889 atomisation Methods 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
- B23H1/06—Electrode material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Powder Metallurgy (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a method for manufacturing a gradient composite electrode for electrical spark rough machining and electrical spark finish machining for laser solid forming and belongs to the technical field of electric discharge machining. The method comprises the steps that a three-dimensional solid model is generated by means of software, the model is sliced and layered, and the parameters of all slice layers are obtained; then, Cu-based SiC composite micro powder is sintered on a vibrating substrate by means of laser according to the shape parameter of the slice layer on the inner side; finally, Cu powder and graphite powder are sintered on a Cu-based SiC composite sediment layer in a mixing mode by means of laser according to the shape parameter of the slice layer on the outer side. The electrode manufactured through the method is provided with a gradient structure, and electricity is discharged firstly by the Cu-based graphite sediment layer located on the outer layer of the electrode so as to achieve rough machining of a workpiece; then finish machining of the workpiece is achieved by means of the Cu-based SiC composite sediment layer of the electrode. Meanwhile, the Cu-based SiC composite micro powder is formed by blowing SiC particles in molten Cu in a dispersed mode by means of nitrogen and then conducting atomization and cooling, in this way, the distribution uniformity of the SiC particles is improved, and the equilibrium of the electric corrosion resistance of the electrode is improved.
Description
Technical field
The invention belongs to spark discharge processing technique field, be specifically related to the preparation method of a kind of laser solid forming electric spark thick fine finishining graded composite electrode.
Background technology
Because spark technology has the incomparable superiority of other processing method in processing property material, labyrinth and micro-workpiece etc., be promoted gradually and application in recent years.In the process of spark discharge processing, be melted, gasify, workpiece material candle not only removes by the electrode material of dishing out of exploding, also tool-electrode material candle is removed simultaneously, this just inevitably creates the loss of tool-electrode, and the loss of tool-electrode maps directly on workpiece, affect its formed precision.
In order to improve the formed precision of workpiece, some experts and scholars have dropped into the research to tool-electrode.Wherein, present inventor associate professor Li Li have developed a kind of combination electrode, the electrical erosion resistance attempted by improving electrode can improve the Forming Quality of workpiece, and propose application for a patent for invention to China, its application number is 201410130305.4, and this electrode is SiC and TiB adopting Electroless copper
2micro mist is formed in Copper substrate by electro-deposition, although improve the electrical erosion resistance energy of tool-electrode to a certain extent, SiC and TiB added in electrode
2distribution is also uneven, and corrosion resisting property is unstable, and addition is also wayward, and these have impact on the crudy of electrode all to a great extent.
In addition, in the process of the actual processing of electric spark, generally first to carry out roughing to workpiece, and then carry out fine finishining.At present, be all that the electrode pair workpiece of employing two kinds of different accuracies carries out priority twice spark machined, replacing Electrode Operation will be carried out in centre, reduces working (machining) efficiency; Simultaneously owing to carrying out twice electrode clamping, the difference of clamping position also can affect the machining accuracy of workpiece.
For the problems referred to above, be badly in need of in industry aly carrying out roughing and fine finishining to workpiece and the electrode of machining accuracy being improved.
Summary of the invention
Technical problem to be solved by this invention is to provide the preparation method of a kind of laser solid forming electric spark thick fine finishining graded composite electrode, can carry out roughing and fine finishining and corrosion resisting property is stablized to workpiece.
For solving the problems of the technologies described above, technical scheme of the present invention is: the preparation method inventing a kind of laser solid forming electric spark thick fine finishining graded composite electrode, comprise substrate and funnel, substrate is arranged on the ultrasonic transformer of ultrasonic vibration installation, it is characterized in that: comprise the following steps:
(1) with the three-dimensional entity model of Software Create electrode, and three-dimensional entity model is pressed certain thickness slicing delamination, convert two-dimensional silhouette information to, obtain the form parameter of each slicing delamination;
(2) utilize CO2 laser instrument under argon shield, adopt the mode of coaxial powder-feeding to sinter according to the form parameter of inner side slicing delamination on the substrate of vibration by Cu base SiC composite micro-powder, obtained Cu base SiC composite sedimentary layer, the direction of vibration of substrate is consistent with the deposition direction of Cu base SiC composite micro-powder; Ultrasonic vibration power is 80W ~ 100W, and amplitude is 1 ~ 2um; The preparation process of described Cu base SiC composite micro-powder is as follows:
A, electroless copper: SiC is made the particulate that particle diameter is 3 ~ 5um, carry out electroless copper and drying to SiC microparticle surfaces, obtained SiC copper facing particulate;
B, prepare liquation: pure for metal Cu is heated to 1150 ~ 1180 DEG C, obtained Cu liquation;
C, particulate are implanted: in funnel, arrange conduit, and the lower end of conduit is positioned at the place of leting slip a remark of funnel bottom, upper end and is communicated with elevated pressure nitrogen source of the gas, and conduit is also communicated with feed pipe, and the other end of feed pipe connects even feed appliance; The bottom of funnel arranges air supply plant, and the gas outlet of air supply plant is towards place of leting slip a remark;
The Cu liquation that step b is obtained is poured in funnel, the SiC copper facing particulate that step a obtains is added in even feed appliance, open elevated pressure nitrogen source of the gas, evenly feed appliance and air supply plant simultaneously, SiC copper facing particulate enters conduit equably by feed pipe, and conduit is blown under the wind-force of elevated pressure nitrogen source of the gas, Cu liquation is coated on the periphery of SiC copper facing particulate and together from leting slip a remark, is become composite micro-powder by gas atomization;
D, screening: the composite micro-powder that step (3) obtains crosses 100 ~ 150 mesh sieves, gets lower part of screen and divides;
(3) utilize laser according to the form parameter of outside slicing delamination by Cu powder and graphite powder mixed sintering on Cu base SiC composite sedimentary layer, the mass ratio 4:1 ~ 5:1 of Cu powder and graphite powder.
Preferably, in step (2), the sand papering of 80#, 200# and 500# granularity first used successively by substrate, and with ethanol purge, dries up.
Preferably, in step (2), laser beam spot sizes is 1 ~ 2 mm, and laser power is 3 ~ 4 KW, and sweep speed is 7 ~ 9 mm/s, and coaxial powder-feeding amount is 6 ~ 8g/min.
Preferably, in step (3), laser beam spot sizes is 1 ~ 2 mm, and laser power is 4 ~ 6 KW, and sweep speed is 3 ~ 5 mm/s, and coaxial powder-feeding amount is 6 ~ 8g/min.
Preferably, in step (3), Cu powder diameter is 60 ~ 80um, and graphite powder diameter is 60 ~ 80 um.
Preferably, in step (1), slice thickness is 0.2 ~ 0.4 mm.
Preferably, in step (1), software used is CAD.
Preferably, the operating temperature of step a is 80 DEG C, and the electroless copper time is 3 hours.
Preferably, in step a, chemical plating solution used divides cupric sulfate pentahydrate by 14 ~ 16 quality, 25 ~ 32 quality divide formaldehyde and 10 ~ 12 quality divide NaOH to be dissolved in 1000 quality to divide in water and make, and the mass ratio of SiC particulate and chemical plating solution is 1:10.
Preferably, in step c, the aspirated pressure of air supply plant is 1.2 ~ 1.4 MPa.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention by software by stereo electrod layering, laser is utilized first to be sintered on substrate by Cu base SiC composite micro-powder, and then Cu powder and graphite powder mixed be sintered on Cu base SiC sedimentary deposit, form the gradient-structure of electrode, in edm process, be positioned at electrode outer field Cu matrix graphite sedimentary deposit discharge at first, realize the roughing of workpiece, treat that Cu matrix graphite sedimentary deposit is fallen by galvanic corrosion, the Cu base SiC sedimentary deposit of electrode just can be utilized to complete the fine finishining of workpiece; The Cu base SiC composite micro-powder simultaneously preparing Cu base SiC sedimentary deposit adopts nitrogen to dispel in Cu liquation by SiC particulate, then cooling forming is atomized, improve the uniformity that SiC particulate distributes in Cu base SiC composite micro-powder, and be convenient to the addition of control SiC particulate, improve the harmony of the electrical erosion resistance energy of electrode, and then improve the crudy of workpiece.
2, owing to preparing in the process of electrode, substrate is in vibrational state, can make sedimentary deposit dense uniform more, improves the electrical erosion resistance energy of electrode further.
Accompanying drawing explanation
Fig. 1 is the structure chart of powder manufacturing apparatus;
Fig. 2 is the distribution map of SiC particulate in combination electrode;
Fig. 3 is the metallurgical microscopic of combination electrode.
Reference numeral is: 1, funnel; 2, conduit; 3, elevated pressure nitrogen source of the gas; 4, even feed appliance; 5, feed pipe; 6, air supply plant; 7, gas outlet; 8, let slip a remark.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
Embodiment one
A kind of edm tool electrode Cu base SiC composite micro-powder is obtained successively according to following steps:
A, SiC is made the particulate that particle diameter is 3um, be dissolved in the water of 1000 mass parts by the NaOH of the cupric sulfate pentahydrate of 14 mass parts, the formaldehyde of 25 mass parts and 10 mass parts and make chemical plating solution, SiC particulate is put into chemical plating solution and is carried out Electroless copper and drying, the mass ratio of SiC particulate and chemical plating solution is 1:10, obtained SiC copper facing particulate; The operating temperature of electroless copper is 80 DEG C, and the time is 3 hours;
B, pure for metal Cu is heated to 1150 DEG C, obtained Cu liquation;
C, as shown in Figure 1, arrange conduit 2 in funnel 1, the lower end of conduit 2 is positioned at 8 places of leting slip a remark bottom funnel 1, upper end is communicated with elevated pressure nitrogen source of the gas 3, conduit 2 is also communicated with feed pipe 5, and the other end of feed pipe 5 connects even feed appliance 4; The bottom of funnel 1 arranges air supply plant 6, and the gas outlet 7 of air supply plant 6 is towards 8 places of leting slip a remark;
The Cu liquation that step b is obtained is poured in funnel 1, the SiC copper facing particulate that step a obtains is added in even feed appliance 4, open elevated pressure nitrogen source of the gas 3, evenly feed appliance 4 and air supply plant 6 simultaneously, SiC copper facing particulate enters conduit 2 equably by feed pipe 5, and conduit 2 is blown under the at the uniform velocity wind-force of elevated pressure nitrogen source of the gas 3, Cu liquation is coated on the periphery of SiC copper facing particulate and together 8 leaks down from leting slip a remark, and is become composite micro-powder by the gas atomization that air supply plant 6 sprays; Wherein, the aspirated pressure of air supply plant 6 is 1.2MPa
The composite micro-powder that d, step c obtain crosses 100 mesh sieves, gets lower part of screen and divides.
Above-mentioned obtained Cu base SiC composite micro-powder is utilized to obtain electric spark thick fine finishining graded composite electrode through following steps again:
(1) three-dimensional entity model of electrode is generated with AutoCAD software (being called for short CAD), and three-dimensional entity model is carried out slicing delamination, the thickness of section is 0.2 mm, converts the three-dimensional entity model of electrode to two-dimensional silhouette information, obtains the form parameter of each slicing delamination;
(2) with the sand paper of 80#, 200# and 500# granularity, substrate is polished successively, and with ethanol purge, dry up.Utilize CO2 laser instrument under argon shield, adopt the mode of coaxial powder-feeding to sinter according to the form parameter of inner side slicing delamination on the substrate of vibration by Cu base SiC composite micro-powder, obtained Cu base SiC composite sedimentary layer, the direction of vibration of substrate is consistent with the deposition direction of Cu base SiC composite micro-powder; Ultrasonic vibration power is 80W, and amplitude is 1um; Above-mentioned laser beam spot sizes is 1 mm, and laser power is 3KW, and sweep speed is 7mm/s, and coaxial powder-feeding amount is 6g/min;
(3) beam diameter is utilized to be 1 mm, laser power is 4KW, sweep speed be 3mm/s laser according to the form parameter of outside slicing delamination by Cu powder and graphite powder mixed sintering on Cu base SiC composite sedimentary layer, the coaxial powder-feeding amount of laser is 6g/min, the mass ratio 4:1 of Cu powder and graphite powder, Cu powder diameter is 60um, and graphite powder diameter is 60um.
Obtained combination electrode as shown in Figures 2 and 3.
Embodiment two
The difference of the present embodiment and embodiment one is: in step a, the particle diameter of SiC particulate is 4um, and in chemical plating solution, the mass fraction of cupric sulfate pentahydrate is 15 parts, and the mass fraction of formaldehyde is 28 parts, and the mass fraction of NaOH is 11 parts; In step b, the heating-up temperature of the pure Cu of metal is 1165 DEG C; In step c, the aspirated pressure of air supply plant 6 is 1.3 MPa; In steps d, the grit number excessively of composite micro-powder is 125 orders.
The slice thickness of step (1) is 0.3 mm; In step (2), ultrasonic vibration power is 90W, and amplitude is 1.5um; Laser beam spot sizes is 1.5 mm, and laser power is 3.5KW, and sweep speed is 8 mm/s, and coaxial powder-feeding amount is 7g/min; In step (3), beam diameter is 1.5mm, and laser power is 5 KW, and sweep speed is 4mm/s, and the coaxial powder-feeding amount of laser is 7g/min, Cu powder diameter is 70um, and graphite powder diameter is 70 um.
Embodiment three
The difference of the present embodiment and embodiment one is: in step a, the particle diameter of SiC particulate is 5um, and in chemical plating solution, the mass fraction of cupric sulfate pentahydrate is 16 parts, and the mass fraction of formaldehyde is 32 parts, and the mass fraction of NaOH is 12 parts; In step b, the heating-up temperature of the pure Cu of metal is 1180 DEG C; In step c, the aspirated pressure of air supply plant 6 is 1.4 MPa; In steps d, the grit number excessively of composite micro-powder is 150 orders.
The slice thickness of step (1) is 0.4mm; In step (2), ultrasonic vibration power is 100W, and amplitude is 2um; Laser beam spot sizes is 2 mm, and laser power is 4KW, and sweep speed is 9 mm/s, and coaxial powder-feeding amount is 8g/min; In step (3), beam diameter is 2mm, and laser power is 6KW, and sweep speed is 5mm/s, and the coaxial powder-feeding amount of laser is 8g/min, Cu powder diameter is 80um, and graphite powder diameter is 80 um.
By the obtained Cu base SiC combination electrode of said method with obtain Cu base SiC combination electrode through contrast test in first Means of Electrodeposition, find that relative loss factor both gaps under following machined parameters are minimum: peak point current 4.5A, pulse width 30us, pulse spacing 5 us, reference voltage 75V, SiC content 15%.In the lump the relative loss factor detected under this parameter is listed in the table below:
The above, it is only preferred embodiment of the present invention, be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be combined, change or retrofit and be Equivalent embodiments of the present invention.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a preparation method for laser solid forming electric spark thick fine finishining graded composite electrode, comprises substrate and funnel, and substrate is arranged on the ultrasonic transformer of ultrasonic vibration installation, it is characterized in that: comprise the following steps:
(1) with the three-dimensional entity model of Software Create electrode, and three-dimensional entity model is pressed certain thickness slicing delamination, convert two-dimensional silhouette information to, obtain the form parameter of each slicing delamination;
(2) utilize CO2 laser instrument under argon shield, adopt the mode of coaxial powder-feeding to sinter by the form parameter of inner side slicing delamination on the substrate of vibration by Cu base SiC composite micro-powder, obtained Cu base SiC composite sedimentary layer, the direction of vibration of substrate is consistent with the deposition direction of Cu base SiC composite micro-powder; Ultrasonic vibration power is 80W ~ 100W, and amplitude is 1 ~ 2um; The preparation process of described Cu base SiC composite micro-powder is as follows:
A, electroless copper: SiC is made the particulate that particle diameter is 3 ~ 5um, carry out electroless copper and drying to SiC microparticle surfaces, obtained SiC copper facing particulate;
B, prepare liquation: pure for metal Cu is heated to 1150 ~ 1180 DEG C, obtained Cu liquation;
C, particulate are implanted: in funnel, arrange conduit, and the lower end of conduit is positioned at the place of leting slip a remark of funnel bottom, upper end and is communicated with elevated pressure nitrogen source of the gas, and conduit is also communicated with feed pipe, and the other end of feed pipe connects even feed appliance; The bottom of funnel arranges air supply plant, and the gas outlet of air supply plant is towards place of leting slip a remark;
The Cu liquation that step b is obtained is poured in funnel, the SiC copper facing particulate that step a obtains is added in even feed appliance, open elevated pressure nitrogen source of the gas, evenly feed appliance and air supply plant simultaneously, SiC copper facing particulate enters conduit equably by feed pipe, and conduit is blown under the wind-force of elevated pressure nitrogen source of the gas, Cu liquation is coated on the periphery of SiC copper facing particulate and together from leting slip a remark, is become composite micro-powder by gas atomization;
D, screening: the composite micro-powder that step (3) obtains crosses 100 ~ 150 mesh sieves, gets lower part of screen and divides;
(3) utilize laser according to the form parameter of outside slicing delamination by Cu powder and graphite powder mixed sintering on Cu base SiC composite sedimentary layer, the mass ratio 4:1 ~ 5:1 of Cu powder and graphite powder.
2. the preparation method of laser solid forming electric spark according to claim 1 thick fine finishining graded composite electrode, is characterized in that: in step (2), the sand papering of 80#, 200# and 500# granularity first used successively by substrate, and with ethanol purge, dries up.
3. the preparation method of laser solid forming electric spark according to claim 2 thick fine finishining graded composite electrode, it is characterized in that: in step (2), laser beam spot sizes is 1 ~ 2 mm, laser power is 3 ~ 4 KW, and sweep speed is 7 ~ 9 mm/s, and coaxial powder-feeding amount is 6 ~ 8g/min.
4. the preparation method of laser solid forming electric spark according to claim 3 thick fine finishining graded composite electrode, it is characterized in that: in step (3), laser beam spot sizes is 1 ~ 2 mm, laser power is 4 ~ 6 KW, and sweep speed is 3 ~ 5 mm/s, and coaxial powder-feeding amount is 6 ~ 8g/min.
5. the preparation method of laser solid forming electric spark according to claim 4 thick fine finishining graded composite electrode, is characterized in that: in step (3), Cu powder footpath is 60 ~ 80um, and graphite powder particle diameter is 60 ~ 80 um.
6. the preparation method of laser solid forming electric spark according to claim 5 thick fine finishining graded composite electrode, is characterized in that: in step (1), slice thickness is 0.2 ~ 0.4 mm.
7. the preparation method of laser solid forming electric spark according to claim 6 thick fine finishining graded composite electrode, is characterized in that: in step (1), software used is CAD.
8., according to the preparation method of the arbitrary described laser solid forming electric spark thick fine finishining graded composite electrode of claim 1 to 7, it is characterized in that: the operating temperature of step a is 80 DEG C, and the electroless copper time is 3 hours.
9. the preparation method of laser solid forming electric spark according to claim 8 thick fine finishining graded composite electrode, it is characterized in that: in step a, chemical plating solution used divides cupric sulfate pentahydrate by 14 ~ 16 quality, 25 ~ 32 quality divide formaldehyde and 10 ~ 12 quality divide NaOH to be dissolved in 1000 quality to divide in water and make, and the mass ratio of SiC particulate and chemical plating solution is 1:10.
10. the preparation method of laser solid forming electric spark according to claim 9 thick fine finishining graded composite electrode, is characterized in that: in step c, the aspirated pressure of air supply plant is 1.2 ~ 1.4 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510421794.3A CN104972186B (en) | 2015-07-18 | 2015-07-18 | Method for manufacturing gradient composite electrode for electrical spark rough machining and electrical spark finish machining for laser solid forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510421794.3A CN104972186B (en) | 2015-07-18 | 2015-07-18 | Method for manufacturing gradient composite electrode for electrical spark rough machining and electrical spark finish machining for laser solid forming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104972186A true CN104972186A (en) | 2015-10-14 |
| CN104972186B CN104972186B (en) | 2017-04-12 |
Family
ID=54269446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510421794.3A Active CN104972186B (en) | 2015-07-18 | 2015-07-18 | Method for manufacturing gradient composite electrode for electrical spark rough machining and electrical spark finish machining for laser solid forming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104972186B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974682A (en) * | 2017-11-02 | 2018-05-01 | 广东省新材料研究所 | A kind of method that die casting surface peening and reparation remanufacture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01246015A (en) * | 1988-03-26 | 1989-10-02 | Sintokogio Ltd | Electrode material for electric discharge machining |
| CN102703845A (en) * | 2012-05-17 | 2012-10-03 | 天津职业技术师范大学 | Technology for strengthening high surface hardness of TC4 titanium alloy by electrical spark |
| UA102342C2 (en) * | 2012-06-20 | 2013-06-25 | Институт Проблем Материаловедения Им. И.М. Францевича Нан Украины | Electrode material based on nickel |
| CN103878455A (en) * | 2014-04-02 | 2014-06-25 | 山东理工大学 | Composite material tool electrode for electrolytic deposition and electric spark and preparation method thereof |
-
2015
- 2015-07-18 CN CN201510421794.3A patent/CN104972186B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01246015A (en) * | 1988-03-26 | 1989-10-02 | Sintokogio Ltd | Electrode material for electric discharge machining |
| CN102703845A (en) * | 2012-05-17 | 2012-10-03 | 天津职业技术师范大学 | Technology for strengthening high surface hardness of TC4 titanium alloy by electrical spark |
| UA102342C2 (en) * | 2012-06-20 | 2013-06-25 | Институт Проблем Материаловедения Им. И.М. Францевича Нан Украины | Electrode material based on nickel |
| CN103878455A (en) * | 2014-04-02 | 2014-06-25 | 山东理工大学 | Composite material tool electrode for electrolytic deposition and electric spark and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李丽等: "《Cu-SiC复合电极电火花加工烧结NbFeB永磁体的研究》", 《功能材料》 * |
| 李丽等: "《电沉积Cu基SiC复合电极材料》", 《功能材料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974682A (en) * | 2017-11-02 | 2018-05-01 | 广东省新材料研究所 | A kind of method that die casting surface peening and reparation remanufacture |
| CN107974682B (en) * | 2017-11-02 | 2020-08-25 | 广东省新材料研究所 | Method for surface strengthening, repairing and remanufacturing of die-casting die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104972186B (en) | 2017-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106735967B (en) | A kind of method of ultrasonic vibration assistant electric arc increasing material manufacturing control shape control | |
| CN106001568B (en) | A kind of functionally gradient material (FGM) metal die 3D printing integral preparation method | |
| CN108179295B (en) | A kind of method for fast mfg of enhanced conformal cooling mold copper | |
| CN100404174C (en) | Preparation method for quick preparing functional gradient material | |
| CN104174842B (en) | A kind of metal wire material based on alternating magnetic field increases material equipment and increases material method | |
| CN108405857B (en) | 3D printing additive manufacturing method for high-silicon aluminum alloy electronic packaging shell | |
| CN102430849B (en) | Method for preparing single-layer diamond by means of nickel-based brazing filler metal thermal spray-welding | |
| CN104164643B (en) | A kind of thermal barrier coating with network structure tack coat and preparation method thereof | |
| CN103273065B (en) | Electron beam selective melting forming method for weld-less metal honeycomb components | |
| CN107584203B (en) | Method for preparing gradient aluminum-silicon electronic packaging material by stirring friction surfacing | |
| CN102719823A (en) | Method for improving microstructure of laser remelting composite coating through vibration | |
| CN103774080A (en) | Aluminum-silicon-boron nitride sealing composite powder material, coating and preparation method | |
| CN109943813A (en) | A kind of high-throughput preparation method of Al-Cr metal composite coating | |
| CN104972188A (en) | Method for modifying surface of titanium alloy by means of electric sparks | |
| CN103846448A (en) | Preparation method of ultra-low-oxygen spherical micron copper powder | |
| CN108330321A (en) | A kind of increasing material manufacturing method of easy segregation high resiliency Cu-Ni-Sn alloys | |
| CN109972004A (en) | A kind of rare earth Sc Modification on Al-Si-Mg alloy and preparation method thereof | |
| CN110438457A (en) | A kind of modified diamond particles, method of modifying, the application as reinforced phase and obtained metal-base composites | |
| CN104775118B (en) | A kind of laser cladding powder pre-setting method | |
| CN104972186A (en) | Method for manufacturing gradient composite electrode for electrical spark rough machining and electrical spark finish machining for laser solid forming | |
| CN103590048B (en) | Thermal sprayed coating on surface of metal material ultrasonic wave added presses gradual pressure working method | |
| CN108085673A (en) | A kind of preparation method of the coating of magnetic conduction containing cold spraying cookware | |
| CN113106450A (en) | Composite hard coating cutter and preparation method thereof | |
| CN107858623A (en) | A kind of thermal spraying on surface processing method | |
| CN101158017A (en) | CuNiIn coating material and preparation method of coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |