CN110157998A - A kind of super-hard self-lubricating cutter material and preparation method thereof - Google Patents
A kind of super-hard self-lubricating cutter material and preparation method thereof Download PDFInfo
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- CN110157998A CN110157998A CN201910444668.8A CN201910444668A CN110157998A CN 110157998 A CN110157998 A CN 110157998A CN 201910444668 A CN201910444668 A CN 201910444668A CN 110157998 A CN110157998 A CN 110157998A
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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
- 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
- B22F3/02—Compacting only
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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
- 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
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
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- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
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Abstract
The present invention provides a kind of super-hard self-lubricating cutter material and preparation method thereof, belong to the technical field of ceramic material preparation, it is the advantage for titanium diboride particle high rigidity, the toughened and reinforced property and graphite of silicon carbide fibre have the advantage of favorable lubricating property, using aluminium powder, cobalt powder, chromium powder, iron powder and nickel powder are as binder, by high-energy ball-milling process by titanium diboride particle, silicon carbide fibre, graphite, aluminium powder, cobalt powder, chromium powder, iron powder and nickel powder are uniformly mixed concurrent intercrescence aurification, form eight yuan of mixed-powders, by high energy pulse electric current sintering technology by eight yuan of mixed-powder thermal sinterings, high energy pulse electric current sintering technology has sintering velocity fast, the features such as sintering temperature is low, this preparation method technique is advanced, data are accurately full and accurate, the Tissue distribution of the super-hard self-lubricating composite material of preparation is uniform, it is well combined between interface , for consistency up to 98% or more, Vickers hardness is the very ideal method for preparing super-hard self-lubricating composite material up to 300HV.
Description
Technical field
The invention belongs to the technical field of ceramic material preparation, specifically disclose a kind of super-hard self-lubricating cutter material and its
Preparation method.
Background technique
Titanium diboride ceramic material has low-density, the advantage of high rigidity, is good wear-resistant material.However, two boronations
Titanium belongs to fragile material, and toughness and shock resistance are poor, it usually needs the side of binder is added inside Titanium diboride material
Formula sinters titanium diboride particle into block materials by the method for high energy pulse electric current sintering.
Silicon carbide fibre is the toughened and reinforced fiber of good refractory ceramics based composites, have high-temperature oxidation resistance,
The advantages that corrosion-resistant, low-density, it can effectively enhance the toughness of composite material.
Graphite is good wear-resisting lubriation material, while having good chemical stability and high temperature resistance, 200
It still can good work without using lubricating oil under the conditions of DEG C -2000 DEG C of temperature.
The characteristic of above-mentioned material is that the preparation of super-hard self-lubricating cutter material provides the foundation, but there has been no correlations at present
Technology can be realized using above-mentioned material as the preparation of the super-hard self-lubricating cutter material of former material.
Summary of the invention
The invention reside in a kind of super-hard self-lubricating cutter material and preparation method thereof is provided, for titanium diboride high rigidity
Feature, selection titanium diboride particle are wear-resistant material, and selection silicon carbide fibre is toughening material, and selection graphite is lubriation material,
Selecting aluminium powder, cobalt powder, chromium powder, iron powder and nickel powder is binder, by high-energy ball-milling process that titanium diboride particle, silicon carbide is fine
Dimension, graphite, aluminium powder, cobalt powder, chromium powder, iron powder and nickel powder are uniformly mixed, so that titanium diboride particle, silicon carbide fibre and graphite table
Alloying occurs for face, is prepared into the composite material of super-hard self-lubricating, by high energy pulse electric current sintering technology to adapt to industrial neck
Demand of the domain to turning cutter material.
To achieve the above object, the present invention provides a kind of preparation method of super-hard self-lubricating cutter material, including following steps
It is rapid:
Step 1 pre-oxidizes titanium diboride powder
Titanium diboride powder is placed in quartz container, is subsequently placed in Resistant heating furnace, pre-oxidation treatment, pre-oxidation temperature are carried out
1000 DEG C of degree, oxidization time 60min；
Step 2, ingredient
Weigh titanium diboride powder, silicon carbide fibre, graphite powder, the aluminium that mass ratio is 68:16:1:1.6:3.5:3.1:3.3:3.5
Powder, cobalt powder, chromium powder, iron powder and nickel powder are placed in ball grinder, and closed；
Step 3, ball milling
Ball grinder is placed on ball mill, ball milling, rotational speed of ball-mill 1500r/min, Ball-milling Time 120min are carried out；
Step 4, charging
The uniform eight yuan of mixed-powders of ball milling mixing are taken out out of ball grinder, are put into graphite jig；
Step 5, pre-compacted
Graphite jig equipped with eight yuan of mixed-powders is placed on press bench and carries out pre-compacted, preload pressure 10MPa,
Dwell time is 5min；
Step 6, high energy pulse electric current sintering composite material
The sintering of super-hard self-lubricating composite material is to be sintered to complete in high energy pulse electric current sintering furnace, is in vacuum environment
Under, high energy pulse electric current heating, outer water circulating cooling, apply and completed in press process；
1. opening furnace body, graphite jig is vertically arranged in the top of lower electrode in sintering furnace furnace chamber；
2. moving down the lower electrode inside sintering furnace, and the center of the lower electrode of holding, graphite jig, top electrode is at a center
On line, centering is simultaneously compressed, compaction pressure 2MPa, lower to pad between electrode and graphite jig, between top electrode and graphite jig
There is graphite cushion block；
3. closing furnace body, and closed；
4. opening vacuum pump, air in extraction machine makes pressure in machine reach 1Pa；
5. opening high energy pulse current heater, heating temperature is to 300 DEG C ± 2 DEG C；
6. cracking pressure motor presses to eight yuan of mixed-powders in graphite jig by graphite cushion block by top electrode, pressure
Pressure 40MPa, and keep pressure constant；
7. increase pulses electric current continues to heat eight yuan of mixed-powders, heating temperature is to 1200 DEG C ± 2 DEG C, heat preservation, pressure maintaining
5min；
9. after heating, pressure, stopping heating, pressure, eight yuan of mixed-powders being made to be cooled to 100 DEG C with furnace body；
10. opening the fire door of furnace body, the sintered combined material in graphite jig and graphite jig is taken out, keeps it natural in air
It is cooled to 25 DEG C；
Step 7, die sinking
After cooling, graphite jig is opened, the super-hard self-lubricating composite material after taking out high energy pulse electric current sintering.
Further, graphite jig is retractable die, and mold cavity surface roughness is Ra 0.08-0.16 μm.
Further, in step 6, high energy pulse electric current sintering furnace is vertical, including furnace body, water tank, pressure motor, true
Sky pump and power control cabinet；Furnace interior is sintering furnace furnace chamber, and outside is surround by outer water circulating cooling pipe；Outer water circulating cooling pipe with into
Water pipe is connected to outlet pipe；Water inlet pipe is connected to by water pump with water tank, and outlet pipe is connected to water tank；The setting of sintering furnace furnace chamber lower part
There is lower electrode, lower electrode upper is lined with lower graphite cushion block, is placed with graphite jig, graphite jig top on lower graphite cushion block top
Thermocouple is installed, is lower margin in the middle and lower part of graphite jig, the top of lower margin is placed with eight yuan of mixed-powders, and eight yuan mixed
The top for closing powder is seaming chuck, there is upper graphite cushion block between seaming chuck and top electrode；Pressure motor is connect with top electrode；Vacuum
It is provided with the first vacuum tube for exhaust on pump, is connected to by the second vacuum tube with sintering furnace furnace chamber；Power control cabinet is equipped with electricity
Source switch, current regulator, controller for vacuum pump, pressure controller, outer water cycle controller, indicator light and display screen；Water tank,
It is led and the between vacuum pump, furnace body, pressure motor and power control cabinet by the first connecting wire, the second connecting wire, third connection
The connection of four connecting wires.
Further, furnace body, water tank, pressure motor, vacuum pump and power control cabinet are respectively provided on the table.
Further, step 8, polishing, sanding processing
Super-hard self-lubricating composite material after high energy pulse electric current sintering is placed on steel plate, with sand paper polishing periphery and table
Face.
The present invention also provides a kind of super-hard self-lubricating cutter materials, which is characterized in that by above-mentioned super-hard self-lubricating composite wood
It is prepared by the preparation method of material.
Compared with prior art, the invention has the following advantages:
Super-hard self-lubricating cutter material provided by the invention and preparation method thereof is for the excellent of titanium diboride particle high rigidity
Gesture, the toughened and reinforced property and graphite of silicon carbide fibre have the advantage of favorable lubricating property, using aluminium powder, cobalt powder, chromium powder, iron powder
With nickel powder as binder, by high-energy ball-milling process by titanium diboride particle, silicon carbide fibre, graphite, aluminium powder, cobalt powder, chromium
Powder, iron powder and nickel powder are uniformly mixed concurrent intercrescence aurification, form eight yuan of mixed-powders, will by high energy pulse electric current sintering technology
Eight yuan of mixed-powder thermal sinterings, high energy pulse electric current sintering technology have the characteristics that sintering velocity is fast, sintering temperature is low, this system
Preparation Method technique is advanced, and data are accurately full and accurate, and the Tissue distribution of the super-hard self-lubricating composite material of preparation is uniform, ties between interface
It closes well, is measured by Archimedes's drainage, for consistency up to 98% or more, Vickers hardness can be used as cutter up to 300HV
Materials'use is the very ideal method for preparing super-hard self-lubricating composite material.
Detailed description of the invention
Fig. 1 is the microstructure morphology of super-hard self-lubricating composite material provided in an embodiment of the present invention；
Fig. 2 is the interface topography figure of super-hard self-lubricating composite material provided in an embodiment of the present invention；
Fig. 3 is the parting line scanning spectra of super-hard self-lubricating composite material provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of high energy pulse electric current sintering furnace in the embodiment of the present invention.
In figure: 1, high energy pulse electric current sintering furnace, 2, mold seaming chuck, 3, sintering furnace furnace chamber, 4, outer water circulating cooling pipe,
5, graphite jig, 6, eight yuan of mixed-powders, 7, margin under mold, 8, lower graphite cushion block, 9, lower electrode, 10, workbench, 11, return
Water pipe, 12, left support, 13, water tank, the 14, first connecting wire, 15, vacuum pump, the 16, first vacuum tube, the 17, second vacuum tube,
18, the second connecting wire, 19, right support, 20, third connecting wire, 21, power control cabinet, 22, power switch, 23, current regulation
Device, 24, controller for vacuum pump, 25, pressure controller, 26, outer water cycle controller, 27, indicator light, 28, display screen, 29,
Four connecting lines, 30, pressure motor, 31, top electrode, 32, upper graphite cushion block, 33, water inlet pipe, 34, water pump, 35, thermocouple.
Specific embodiment
The chemical substance material that the present embodiment uses are as follows: titanium diboride powder, silicon carbide fibre, graphite powder, aluminium powder, cobalt powder,
Chromium powder, iron powder, nickel powder and dehydrated alcohol, it is as follows that a combination thereof prepares dosage: being measurement unit with gram, millimeter
Titanium diboride powder: TiB2 68 g±0.01g
Silicon carbide fibre: SiCf 16g±0.01g
Graphite powder: C 1g ± 0.01g
Aluminium powder: Al 1.6g ± 0.01g
Cobalt powder: Co 3.5g ± 0.01g
Chromium powder: Cr 3.1g ± 0.01g
Iron powder: 3.3 ± 0.01g of Fe
Nickel powder: 3.5 ± 0.01g of Ni
Graphite paper: 2 pieces of 90mm × 2mm × 90mm of C
Sand paper: 400 mesh 2 open 300mm × 0.5mm × 200mm
Dehydrated alcohol: C2H5OH 200mL±5 mL
The preparation method is as follows:
(1) retractable die is prepared
Retractable die makes of graphite material, and mold cavity surface roughness is Ra 0.08-0.16 μm；
(2) TiB is pre-oxidized2Powder
By TiB2Powder is placed in quartz container, is subsequently placed in Resistant heating furnace, and pre-oxidation treatment, Pre oxidation are carried out
1000 DEG C, oxidization time 60min；The purpose of pre-oxidation is in TiB2Powder particles surface forms the film of one layer of boron oxide, improves
Interfacial combined function between titanium diboride particle and binder；
(3) ingredient
Weigh titanium diboride powder 68g ± 0.01g, silicon carbide fibre 16g ± 0.01g, graphite powder 1g ± 0.01g, aluminium powder 1.6g ±
0.01g, cobalt powder 3.5g ± 0.01g, chromium powder 3.1g ± 0.01g, iron powder 3.3g ± 0.01g, nickel powder 3.5g ± 0.01g, are placed in ball
In grinding jar, and it is closed；
Titanium diboride powder: silicon carbide fibre: graphite powder: aluminium powder: cobalt powder: chromium powder: iron powder: nickel powder=68:16:1:1.6:3.5:
3.1:3.3:3.5；
(4) ball milling
Ball grinder is placed on ball mill, ball milling, rotational speed of ball-mill 1500r/min, Ball-milling Time 120min are carried out;
(5) it charges
The uniform eight yuan of mixed-powders 6 of ball milling mixing are taken out out of ball grinder；Graphite jig 5 is opened, mold seaming chuck is taken out,
Graphite paper is placed on margin top under mold, eight yuan of mixed-powders 6 is placed on graphite paper top, on eight yuan of 6 tops of mixed-powder
Graphite paper is placed, places seaming chuck on graphite paper top；
(6) pre-compacted
Graphite jig 5 equipped with eight yuan of mixed-powders 6 is placed on Manual pressure machine worktable and carries out pre-compacted, preload pressure is
10MPa, dwell time 5min；
(7) high energy pulse electric current sintering composite material
The sintering of super-hard self-lubricating composite material is to be sintered to complete in high energy pulse electric current sintering furnace, is in vacuum environment
Under, high energy pulse electric current heating, outer water circulating cooling, apply and completed in press process；
1. opening blow-on body 1, open-close type graphite jig 5 is vertically arranged in the top of lower electrode 9 in sintering furnace furnace chamber 3；
2. moving down the top electrode 9 inside sintering furnace furnace chamber 3, and the center of the lower electrode 9 of holding, graphite jig 5, top electrode 31
On a center line, centering is simultaneously compressed, compaction pressure 2MPa, between lower electrode 9 and graphite jig 5, top electrode 31 and stone
Graphite cushion block is lined between black mold 5；
3. closing furnace body 1, and closed；
4. opening vacuum pump 15, air in extraction machine makes pressure in machine reach 1Pa；
5. opening high energy pulse current heater, heating temperature is to 300 DEG C ± 2 DEG C；
6. cracking pressure motor 30 applies eight yuan of mixed-powders 6 in graphite jig 5 by graphite cushion block by top electrode 31
Pressure, press pressure 40MPa, and keeps pressure constant；
7. increase pulses electric current continues to heat eight yuan of mixed-powders 6, heating temperature is to 1200 DEG C ± 2 DEG C, heat preservation, pressure maintaining
5min；
9. after heating, pressure, stopping heating, pressure, eight yuan of mixed-powders 6 being made to be cooled to 100 with high energy pulse electric current sintering furnace
℃；
10. opening the fire door of furnace body 1, graphite jig 5 and its interior sintered combined material are taken out, its natural cooling in air is made
To 25 DEG C；
(8) it is opened
After cooling, graphite jig 5 is opened, the super-hard self-lubricating composite material after taking out high energy pulse electric current sintering；
(9) polishing, sanding processing
Super-hard self-lubricating composite material after high energy pulse electric current sintering is placed on steel plate, with sand paper polishing periphery and table
Face makes its cleaning；
(10) test, analysis and characterization
The pattern of the super-hard self-lubricating composite material of preparation, color, microstructure morphology, mechanical property are detected, analyzed,
Characterization；
Microstructure morphology analysis is carried out with scanning electron microscope instrument；
Fig. 1 is the microstructure morphology (amplification factor 1000) of super-hard self-lubricating composite material, as shown in the figure: between each constituent element
Distribution is more uniform, does not occur local agglomeration；
Fig. 2 is the interface topography figure (amplification factor 2000) of super-hard self-lubricating composite material, as shown in the figure: between different constituent elements
Interface cohesion is good, has reached metallurgical bonding；
Map scanning is carried out with X-ray energy spectrometer (EDS), Fig. 3 is the parting line scanning spectra of super-hard self-lubricating composite material, figure
Shown in: in the interface of different constituent elements, there are certain thickness elements diffusion layers, and elements diffusion is more smooth, does not occur member
The mutation of element；
Hardness test is carried out with vickers hardness tester, Vickers hardness is up to 300HV；
Conclusion: super-hard self-lubricating composite material is grey black, is evenly distributed between each constituent element, titanium diboride particle, silicon carbide
The defects of interface cohesion is good between fiber, graphite particle and binder, composite inner pore-free, crackle generates, compound
The Vickers hardness of material is up to 300HV；
(11) it stores
The super-hard self-lubricating composite material of preparation is packed with soft material, is stored in clean, dry environment, it is moisture-proof, sun-proof,
Anti- acid-alkali salt corrodes, and 20 DEG C of storage temperature, relative humidity≤10%.
Wherein, as shown in figure 4, high energy pulse electric current sintering furnace be it is vertical, including furnace body 1, water tank 13, pressure motor 30,
Vacuum pump 15 and power control cabinet 21；It is sintering furnace furnace chamber 3 inside furnace body 1, outside is surround by outer water circulating cooling pipe 4；Outer water circulation
Cooling tube 4 is connected to water inlet pipe 33 and outlet pipe 11；Water inlet pipe 33 is connected to by water pump 34 with water tank 13, outlet pipe 11 and water tank
13 connections；3 lower part of sintering furnace furnace chamber is provided with lower electrode 9, and lower 9 top of electrode is lined with lower graphite cushion block 8, in lower graphite cushion block 8
Top is placed with graphite jig 5, and 5 top of graphite jig is equipped with thermocouple 35, is lower margin 7 in the middle and lower part of graphite jig 5,
The top of lower margin 7 is placed with eight yuan of mixed-powders 6, and the top of eight yuan of mixed-powders 6 is seaming chuck 2, seaming chuck 2 and top electrode
There is upper graphite cushion block 32 between 31；Pressure motor 30 is connect with top electrode 31；First for exhaust is provided on vacuum pump 15
Vacuum tube 16 is connected to by the second vacuum tube 17 with sintering furnace furnace chamber 3；Power control cabinet 21 is equipped with power switch 22, current regulation
Device 23, controller for vacuum pump 24, pressure controller 25, outer water cycle controller 26, indicator light 27 and display screen 28；Water tank 13,
Pass through the first connecting wire 14, the second connecting wire 18, third between vacuum pump 15, furnace body 1, pressure motor 30 and power control cabinet 21
Connection lead 20 and the 4th connecting wire 29 connect；Furnace body 1, water tank 13, pressure motor 30, vacuum pump 15 and power control cabinet 21 are respectively provided with
On workbench 10.
The above is only the embodiment of the present invention, are not intended to limit the scope of the invention, all to be said using the present invention
Equivalent structure or equivalent flow shift made by bright book content is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (6)
1. a kind of preparation method of super-hard self-lubricating cutter material, which is characterized in that include the following steps:
Step 1 pre-oxidizes titanium diboride powder
Titanium diboride powder is placed in quartz container, is subsequently placed in Resistant heating furnace, pre-oxidation treatment, pre-oxidation temperature are carried out
1000 DEG C of degree, oxidization time 60min；
Step 2, ingredient
Weigh titanium diboride powder, silicon carbide fibre, graphite powder, the aluminium that mass ratio is 68:16:1:1.6:3.5:3.1:3.3:3.5
Powder, cobalt powder, chromium powder, iron powder and nickel powder are placed in ball grinder, and closed；
Step 3, ball milling
Ball grinder is placed on ball mill, ball milling, rotational speed of ball-mill 1500r/min, Ball-milling Time 120min are carried out；
Step 4, charging
The uniform eight yuan of mixed-powders (6) of ball milling mixing are taken out out of ball grinder, are put into graphite jig (5)；
Step 5, pre-compacted
Graphite jig (5) equipped with eight yuan of mixed-powders (6) is placed on press bench and carries out pre-compacted, preload pressure is
10MPa, dwell time 5min；
Step 6, high energy pulse electric current sintering composite material
The sintering of super-hard self-lubricating composite material is to be sintered to complete in high energy pulse electric current sintering furnace, is in vacuum environment
Under, high energy pulse electric current heating, outer water circulating cooling, apply and completed in press process；
1. opening furnace body (1), graphite jig is vertically arranged in the top of electrode (9) lower in sintering furnace furnace chamber (3)；
2. moving down the internal lower electrode (9) of sintering furnace furnace chamber (3), and keep lower electrode (9), graphite jig (5), top electrode
(31) on a center line, centering is simultaneously compressed at center, compaction pressure 2MPa, lower electrode (9) and graphite jig (5) it
Between, between top electrode (31) and graphite jig (5) be lined with graphite cushion block；
3. closing furnace body (1), and closed；
4. opening vacuum pump (15), air in extraction machine, pressure in machine is made to reach 1Pa；
5. opening high energy pulse current heater, heating temperature is to 300 DEG C ± 2 DEG C；
6. cracking pressure motor (30), by top electrode (31), by graphite cushion block to eight yuan of mixed powders in graphite jig (5)
End pressure, press pressure 40MPa, and keeps pressure constant；
7. increase pulses electric current continues to heat eight yuan of mixed-powders (6), heating temperature is to 1200 DEG C ± 2 DEG C, heat preservation, pressure maintaining
5min；
9. after heating, pressure, stopping heating, pressure, eight yuan of mixed-powders (6) being made to be cooled to 100 DEG C with furnace body (1)；
10. opening the fire door of furnace body (1), the sintered combined material in graphite jig (5) and graphite jig (5) is taken out, in air
Naturally cool to 25 DEG C；
Step 7, die sinking
It after cooling, opens graphite jig (5), the super-hard self-lubricating composite material after taking out high energy pulse electric current sintering.
2. the preparation method of super-hard self-lubricating cutter material according to claim 1, which is characterized in that the graphite jig
For retractable die, mold cavity surface roughness is Ra 0.08-0.16 μm.
3. the preparation method of super-hard self-lubricating cutter material according to claim 1, which is characterized in that the step 6
In, the high energy pulse electric current sintering furnace is vertical, including furnace body (1), water tank (13), pressure motor (30), vacuum pump (15)
With power control cabinet (21)；
It is inside the furnace body (1) sintering furnace furnace chamber (3), it is external to be surround by outer water circulating cooling pipe (4)；
The outer water circulating cooling pipe (4) is connected to water inlet pipe (33) and outlet pipe (11)；
The water inlet pipe (33) is connected to by water pump (34) with water tank (13), and outlet pipe (11) is connected to water tank (13)；
Sintering furnace furnace chamber (3) lower part is provided with lower electrode (9), and lower electrode (9) top is lined with lower graphite cushion block (8), under
Graphite cushion block (8) top is placed with graphite jig (5), and graphite jig (5) top is equipped with thermocouple (35), in graphite jig
(5) middle and lower part is lower margin (7), and the top of lower margin (7) is placed with eight yuan of mixed-powders (6), eight yuan of mixed-powders (6)
Top is seaming chuck (2), there is upper graphite cushion block (32) between seaming chuck (2) and top electrode (31)；
The pressure motor (30) connect with top electrode (31)；
It is provided with the first vacuum tube (16) for exhaust on the vacuum pump (15), passes through the second vacuum tube (17) and sintering furnace
Furnace chamber (3) connection；
The power control cabinet (21) is equipped with power switch (22), current regulator (23), controller for vacuum pump (24), pressure control
Device (25), outer water cycle controller (26), indicator light (27) and display screen (28)；
Pass through the first connection between the water tank (13), vacuum pump (15), furnace body (1), pressure motor (30) and power control cabinet (21)
(20) and the connection of the 4th connecting wire (29) are led in conducting wire (14), the second connecting wire (18), third connection.
4. the preparation method of super-hard self-lubricating cutter material according to claim 3, which is characterized in that the furnace body (1),
Water tank (13), pressure motor (30), vacuum pump (15) and power control cabinet (21) are arranged on workbench (10).
5. the preparation method of super-hard self-lubricating cutter material according to claim 1, which is characterized in that further include step
Eight, polishing, sanding processing
Super-hard self-lubricating composite material after high energy pulse electric current sintering is placed on steel plate, with sand paper polishing periphery and table
Face.
6. a kind of super-hard self-lubricating cutter material, which is characterized in that by the described in any item super-hard self-lubricating knives of claim 1-5
Has the preparation method preparation of material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134608A (en) * | 2021-03-30 | 2021-07-20 | 北京航空航天大学 | Device and method for preparing nickel-based high-temperature alloy blank by pulse current auxiliary sintering |
| CN115652125A (en) * | 2022-11-10 | 2023-01-31 | 太原工具厂有限责任公司 | Preparation method of particle-reinforced high-entropy alloy composite material for cutter |
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|---|---|---|---|---|
| CN113134608A (en) * | 2021-03-30 | 2021-07-20 | 北京航空航天大学 | Device and method for preparing nickel-based high-temperature alloy blank by pulse current auxiliary sintering |
| CN115652125A (en) * | 2022-11-10 | 2023-01-31 | 太原工具厂有限责任公司 | Preparation method of particle-reinforced high-entropy alloy composite material for cutter |
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