JP2759095B2 - Sliding member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention belongs]   The present invention relates to a material having wear resistance and corrosion resistance or iron,
Wear resistance on sliding surfaces made of ordinary materials such as iron or synthetic resin
Dot, strip or circle coating with wear and corrosion resistance
And a sliding member coated so as to have a pattern of [Conventional technology]   In conventional equipment such as machine tools and measuring instruments,
The sliding surfaces of the table and table are cut and quenched and polished.
The sliding surface of the table that slides on the machined bed surface
To achieve the precision of the sliding surface,
It is formed by performing groove processing.   On the other hand, coating various metals by discharge is not recommended.
It is shown. For example, JP-A-55-28,314 and 58-19
As described in JP 7,275, the electrode is separated from the coating material
For discharge coating while moving at right angles to the direction of movement
Method for discharge coating using a rotating electrode or a circular rotating electrode
With a surface roughness of about 10 to 20 μm Rmax or less
A method of obtaining a coating layer having a high flatness and a uniform thickness,
Alternatively, for example, JP-A-58-197,274 and JP-A-59-55,362
JP, 59-55,363, etc., as described in the rod-shaped electrode
Discharge coating while giving rotation around an axis parallel to the central axis
High flatness with surface roughness of about 10μmRmax or less
A method of obtaining a coating layer of uniform thickness, or
The discharge coating method and the like described in JP-B-58-14,877 have been proposed.
Have been. In addition, as a desirable method, for example, a thin rod
Bundled multiple electrodes or preferably thin wire electrodes
Between the rod and the sliding surface of the sliding member.
About 10 μm or less, preferably about 0.5 to 5 μm
It is preferable to form and maintain
Or around a central axis of the binding electrode or an axis parallel to the axis.
The binding electrode faces the sliding surface while rotating the binding electrode
Do not scan relatively at a predetermined speed in the direction perpendicular to the
Intermittently or a series of multiple voltage pulses
By intermittently applying a voltage between them to generate a discharge
Of the binding electrode, which melts and wears in sequence, is welded to the sliding surface.
Non-vibration discharge coating methods for coating are known.   As the coating material, for example, Japanese Patent Application No. 61-80,794, 61-8
At right angles to the axial direction described in 6,808 and 61-86,809
Multi-layer coaxial in cross section, or multi-layer parallel in one direction
Shape or by one or more intersecting lines passing through the center
Split unity or joint-shaped or radial split unity or
It is effective to use a combined discharge coated electrode,
One or more of the binding or binding electrodes
Several of each are reserved for alloy materials having a predetermined relationship with the alloy composition.
It can be used as a coating material after being made.   In addition, as a discharge power source, in addition to those using capacitors,
Pulse width of voltage pulse, pause between pulses, and discharge current
Selective settings such as amplitude or the number of voltage pulse trains
Current electronic switch on / off voltage pulse power supply, example
For example, JP-B-46-28,163, JP-B-46-28,162, or
Are described in JP-B-58-13,623, JP-B-59-43,989, etc.
On-board discharge power supplies are known. [Problems to be solved by the invention]   Sliding by grinding or scraping after cutting
Finishing the surface requires skill and a lot of time
Was.   Therefore, the present invention utilizes a conventional discharge coating,
By improving this, the above finishing work can be omitted.
Function, especially to reduce or increase the friction coefficient of the sliding surface.
Abrasion and corrosion resistant slides used for friction transmission devices
An object is to provide a sliding member having a moving surface. [Means for solving the problem]   In order to achieve this object, the sliding member of the present invention has a wear-resistant
Abrasion and corrosion resistant coating material is melted by electric discharge or laser
The molten coating material is painted on the sliding surface in a predetermined pattern.
Characterized by being coated   The sliding member of the present invention may be made of non-ferrous or synthetic resin.
Normal materials are available, especially each of Al or Ti
Main alloys, or a mixture of these and rare earth
A material sintered by adding elements is used and the material
The effect is further increased by using the electric discharge machining of the sliding surface of
You.   In this way, WC is applied to the sliding surface made of any material.
System, Ti system, TiN system, ZrB_TwoSystem or WS_Two, MoS_TwoEtc. mixed
Coating material, W, Mo, Al or Sn etc. having solid lubricity
Metal or an alloy of a mixture of these metals and iron
NC control (numerical control), CNC control (computer
Point, band, circle, etc. to a predetermined thickness
Draw an arbitrary pattern and cover it. The coating work is air
In inert gas or reactive gas.
Now.   In addition, coating is performed by electric discharge, laser or electron beam.
NC control to perform micro welding (micro welding), CNC control
And measure the coated surface with a laser.
In case of discharge, rotate the electrode of the coating material
Vibrates against the sliding surface,
Welding is performed, and the electrode of the coating material and the sliding member are
Move relative to the constituent materials in the X, Y and Z axis directions
Let it.   In addition, vibration occurs in opposition to the material that constitutes the sliding member and the sliding surface.
The voltage pulse applied between the
Pulse waveform changed by combining digital pulses
Combined voltage pulse and its different waveforms
The voltage pulse, or a combination thereof, is used as the coating progresses.
A voltage pulse that is changed by using a voltage pulse is used.   In addition to simply welding the cladding material,
When the covering electrode is pulled up from the sliding surface and separates
Before solidifying part of the welded cladding, the cladding electrode
Vibration to remove by the convex surface formed on the coated surface
The part is flattened. [Action]   According to the present invention, it acts like an oil groove or a scrape surface,
Abrasion and corrosion resistance, and friction according to the purpose
Coating with small or large coefficient is controlled by NC and CNC control.
Slidable in a pattern of any shape
It can be formed on the sliding surface of the member. In addition,
By controlling the thickness of the covering layer, sliding parts and joining parts can be
Accuracy is also possible.   For example, sliding members made of steel S45C
On the surface, the current value Ip60A, τon2
A voltage pulse of 0 μs and τoff of 40 μs is applied,
Move at 150mm / min while rotating at 0 ~ 1000RPM
, And cover it with a thickness of 20 to 30 μm in the meantime
did. 600g / cm for completed sliding member^TwoApply the load of
Abrasion test was performed at a moving speed of 80 cm / min in tiger oil
As a result, the surface roughness of the sliding surface before the wear test was 12 to 12.5 μRm
ax, but the surface roughness after sliding 10.3km is 10 ~ 11μRma
x, surface roughness after sliding 15km 10 ~ 11μRmax, 22k
The surface roughness after sliding for m was 9 μRmax. And tapir
The friction coefficient μ in the tiger oil was as small as 0.072.
On the contrary, an element vibrator driven by a piezoelectric element
Covers the area where the motor contacts the driver and the friction transmission surface of the transmission.
To increase the transmission effect. [Embodiment of the invention]   The present invention will be described with reference to the drawings.   FIG. 1 is a vibration type micro-welding apparatus embodying the present invention.
Is an example. Coating that acts the same as the discharge electrode
The material of material 1 is different from the electrode used for normal electric discharge machining.
WC, TiC, TiN, WCB, ZrB_TwoSystem and so on
WS with solid lubricity_Two, MoS_TwoEtc., W, Mo, Al or Sn etc.
Metal or a mixture of such metals with iron etc.
I do. This coating material 1 is detachably attached to the spindle 2
The spindle 2 is connected to the resonator element 3
During rotation by a rotating device (not shown).
In some cases. Attach one end of the resonator element 3 with screws
An electromagnet 3 for vibrating the resonator element 3 is attached to the girder head 4
Then, it is excited by the exciting coil 6. Guy attached to head 4
The slide shaft 7 has a horizontal arm 8 and a slide ball bearing 9
Slidably supported by the same head 4
The screw 10 is attached to a nut 12 supported by a bearing 11 on an arm 8
Screwed into the worm wheel 13 fixed to the nut 12
A worm (not shown) fitted to the arm 8
The nut 12 is rotated by rotating the
The head 4 is moved in the Z-axis direction. Position facing the covering material 1
The material 15 constituting the sliding member is supported by the support 16.
The support 16 is manually or motor 17 on a saddle 18.
Moves in the X-axis direction, and saddle 18 is manually or motor 19
It is configured to move on the table 20 in the Y-axis direction.
When welding the coating material 1 to the sliding surface of the material 15
X and Y axis directions between the material 15 and the coating material 1 according to the welding
Direction relative movement is controlled. And table 20
Column 22 with horizontal arm 8 mounted on fixed bed 21
Fixedly installed. Alternatively, place the column 22 horizontally on the bed 21
To be movable in the direction
The cover 1 may be moved in the horizontal direction. Further
The sliding surface (covering surface) of the coating material 1 and the material 15 is covered with a cover 23.
Cover, cover 23 inside cylinder 24 from inert gas such as argon.
Reactive gas such as reactive gas or carbonizing gas or nitriding gas.
Supplied by hose 25. This gas supply causes the coating material 1
Depo by vibrating or vibrating and rotating to repeat contact opening
(Covering) When producing carbide and nitride by the coating method
The process is performed by using a gas for carbonization (gas containing organic substances) or a gas for nitriding.
(Nitrogen gas) and an inert gas such as argon
Be paid.   NC device 26 drive-controlled servo motors 14, 17, 19
When the excitation power supply 27 for exciting the excitation coil 6 is controlled,
Then, a discharge voltage is applied between the coating material 1 and the material 15.
The processing power supply 28 is controlled. With this NC device 26, sliding members
2 (a) and 2 (b) show the sliding surface of the material 15 constituting
In addition, FIGS. (C), (e), (f), (g) and (h) show the same.
Points, lines, bands, or arcs, or the like
A lamellar pattern is arbitrarily selected and coated.   Here, FIG. 2C is a sectional view taken along the line AA in FIG.
As shown in (d), the thickness ε of the coating layer becomes 6 μm.
The result of the wear test with the WC material coated in a folded line
Shown in the figure. In FIG. 3, the sliding portion of the present invention shown in diagram I
The test results using roller bearings
As shown in Diagram II of the same figure, the hardened surfaces
Diagram III showing the results of the dynamic test, and
The surfaces made of cast iron are brought into contact with each other to
Compare with the diagram IV in
As a result, the sliding surface of the sliding member of the present invention has the best results.
It can be seen that In this case, the sliding of the sliding member of the present invention
The friction coefficient μ of the moving surface in oil is as small as 0.06.
Was.   Also, the sliding surface of the material 15 made of cast iron FC material has B5
%, Ni12%, the balance being WC, using the coating material 1 as an electrode.
The current value Ip60A,
Apply a voltage pulse of τon30μs and τoff30μs.
While rotating the coating material 1 at 350 RPM, on one sliding surface
The other sliding surface was covered with a circular pattern in a streak shape.
Friction coefficient μ is 0.08, the amount of wear when sliding 20 km
Was as small as 0.004 mm (4 μm). By the way
The coefficient of friction of the sliding surface when not covered was 0.14.   Further, on the sliding surface of the material 15 made of carbon steel,
The coating material 1 consisting of low carbon steel and Mo in a ratio of 1: 3 is used as an electrode.
Staggered pattern at 15mm width 5mm interval 25sec / cm^Twoof
Micro-welding at a high speed
Combine so that you can add thin oil, 15kg / c
m^TwoTest at a speed of 3 m / min under
As a result, the coefficient of friction was 0.08, and the wear after moving 30 km
The amount was 0.004 mm. These results are similar to the traditional roller
High precision and stable sliding drive compared to the bearing sliding method
Is performed. Also, this micro welding
Is applied in the inert gas mentioned above or a specific diffusion gas.
Powder and granules can be applied to the coating material 1.
Can be   The sliding member is made of a material such as iron, non-ferrous or synthetic resin
Although it can be manufactured using a sliding material,
If specified, pistons, cylinders and pumps of internal combustion engines
For injection, etc., each of Al and Ti or these
Mixed with a rare earth element and sintered.
Good to use. Specifically, AlTiVSm, AlTiVY, AlCoS
m, AlCoY, AlCuCoSm, Ti-13 (CuCoSm) -4Ni, Ti-45Al-
5Co-1.5Cr-Sm, Ti-45Al-5Mo-1.5Cr-Sm, Ti-6Al-4V-Sm,
And other materials have particularly high wear resistance and low friction coefficient.
And excellent sealing effect. About the sealing effect
In other words, for example, the surface that was subjected to EDM using these materials
When the surface roughness is 10μRmax,
1.6 × 10^-Fourmcc / cc
0.6 × 10 for the above material^-FourShows mcc / cc sealing effect,
Furthermore, when the surface roughness is 5μRmax, the sealing effect of the conventional product is 1.
1 × 10^-Fourmcc / cc, whereas the material of the present invention
Then 0.08 × 10^-FourA mcc / cc sealing effect was exhibited. As a result
Is a cylinder and piston made by sintering the above material.
Efficient in increasing efficiency and durability
ing.   Thus, micro welding performed on the sliding surface of the material 15
(Small welding), as mentioned above,
In addition to the effect of oil groove formation, when positioning accuracy is required
Can also be used. In this case, sliding surface or joining
Coating material 1 to a thickness of at least 3 μm or 5 μm on the surface
Micro-welding, overlaying the coating layer as necessary to achieve a predetermined thickness
And a thickness of about 30 μm at the maximum. Micro welding
As shown in Fig. 4, laser light
The laser beam 30 emitted from the oscillation device 29 is converted to a CCD (Charge Co.)
measurement with a well-known surface measurement device that receives light with an upled device)
Then, the Z-axis circuit is input by the CNC device 26 that has input the output.
Control the motor 14 and the X-axis and Y-axis servomotors 17 and 19.
The material 15 and the covering material 1 are relatively moved by
Of the amount determined by the load and speed applied to the sliding surface
The coating layer is micro-welded to a predetermined coating pattern. In addition,
Measure the dimensions of the material 15 in advance using a measuring device not shown.
B Measure before welding and determine the amount to be micro welded
I do. The measurement is performed using a laser or a contact detection device.
And measure the average over a certain area to determine the position and direction.
By making a decision, micro welding can be performed with the desired accuracy.
Can be. Micro welding performed in this way is
Can be welded not only on surfaces but also on curved surfaces with a predetermined thickness
From this, it is possible to improve the directional accuracy of planes and curved surfaces.
Not only the sliding surface but also the assembly when assembling machine parts.
Scan the entire contact surface to achieve vertical accuracy
Or, by determining the position and direction, with the desired accuracy
Can be micro welded.   According to the experiment, there was an error of 0.06mm at the beginning of processing
2μm for the sliding surface of 350mm in the X direction and 200mm in the Y direction
As a result of micro-welding with accuracy, an overall error of 3 μm
Was obtained.   Also, when performing this micro-welding,
Like charcoal using freon gas or oil,
Treatments such as nitriding using nitrogen gas are performed.
MoS mentioned_TwoOr WS_TwoWC mixed with solid lubricant such as
Or coating material using wear-resistant material such as TiN
Cover with 1.   For example, on the surface of the material 15 using FC material (iron material) as a base material,
Approximately 10mmφ point at 10mm interval TiN layer and WC layer in thin part
When 8μm, 28μm micro-welding on thick part,
The coating layer becomes amorphous and has corrosion resistance and wear resistance.
A high coating layer can be obtained, and as a result of the measurement,
It shows a wear amount of about 2 to 6 μm when sliding about km.
The lubrication and accuracy of sliding parts of measuring machines and machine tools.
However, it is very effective to use it for, for example, obtaining the accuracy of a joint portion.   As described above, in inert gas or reactive gas
Motion of the covering material 1 by vibration or a combination of vibration and rotation
And the contact and separation of the sliding surface of the material 15
Micro-welding to form a coating with the required pattern
Therefore, when forming a coating layer of carbide, nitride, etc.
Gas (organic substance-containing gas) or nitriding gas (nitrogen gas)
) Is supplied from the cylinder 24, and if necessary, argon
While supplying an inert gas such as
Make contact.   According to the experiment, the surface of the material 15 made of steel S55C material
In addition, Ip60A, τon80μs, τoff80μs, average current 10A
Under the pulse condition by the power supply 28, the Ti electrode is used as the coating material 1,
55μm thick TiC when coated with propane
45 sec / cm layer^TwoCould be formed at a speed of Also,
Inject raw gas from inside and supply argon gas from surrounding
Then, the Ti electrode was used as the coating material 1 and rotated at 350 RPM.
With a thickness of 60 μm while vibrating at 380 Hz with an amplitude of 18 μm.
The TiN layer was coated. In the case of this TiN layer, the coefficient of friction is
The sliding effect was extremely low. In addition, ZrB_TwoAnd
Optional using TiC or inert gas or reactive gas
Was able to be produced.   In micro welding using electric discharge,
FIG. 5 (E) shows one type of waveform pattern.
Instead of micro-welding by continuously supplying
5 (A), (B), (C), (D), and
Pulses having different waveform ratios as shown in FIG.
Micro-welding by repeatedly supplying in a combined state
As a result, a more uniform coating layer could be obtained. this is
The method of changing the waveform by combining digital pulses
By changing the waveform as the machining progresses
To maintain a good relationship between the processed surface roughness and the processing speed.
Was completed. 5% Co to WC on the material 15 made of steel S55C
The coating material 1 was rotated at 1500 RPM as an electrode.
The current value Ip40 supplied from the power supply 28 at intervals of 5 μm.
A, τon40μs, τoff40μs standard waveform voltage
When applying a pulse and coating, and when changing the waveform
Mushroom, unit area (cm^TwoCoating time per min) and coating amount
(Mg) is shown in the graph of FIG. Also, in FIG.
Is the unit area (cm^Two) And coating surface roughness (min)
It shows the relationship with the height (μmHmax). In FIG. 6 and FIG.
And the one shown by the diagram of "3" is the conventional standard waveform
Shows the result of only the pulse of FIG.
Fig. 5 (A) shows the waveform of 10 pulses, and Fig. 5 (C) shows the waveform.
Discharge 3 pulses repeatedly, and after 10 minutes, waveform (C)
"5" indicates the case where the number of pulses was increased from 5 to 5 pulses.
In the diagram shown in the diagram, the waveform of FIG.
The waveform of (B) is composed of 10 pulses and the waveform of (C) is composed of 10 pulses.
This shows the case where both the coating amount and the surface roughness were released.
Different coating states when changing the pulse state
And the combination of pulses of different waveforms according to the present invention.
Is the coating amount and coating surface roughness with respect to the coating processing time.
It turns out that it is excellent also in any point of.   Thus, as the coating process progresses,
Change the waveform, and change the
Combine waveforms and coat the changed waveform combinations
Micro welding by changing as the progress of the process
Is advanced, or a constant microphone with a standard waveform
B) When welding progresses, the present invention
Cover one after another while removing convex parts so as to eliminate as much as possible
By doing so, the effect can be further improved. This
This is to change the waveform as the micro welding progresses
Changes the thermal characteristics, and the unevenness of the micro welded part
It is controlled so as not to be as rough as possible. That
Sometimes supply current is 35000A / cm depending on coating material^Two
~ 45000A / cm^TwoDegree, and if the coated surface
45000A / cm^Two~ 50000A / cm^TwoCurrent density
You.   Also, in micro welding, it is too long due to its characteristics
It turned out that a pulse with a time width was not good. Current value Ip
The relationship between the coating amount (mg) and the time (min) of the result of the experiment at 50 A
The engagement is shown in FIG. From the figure, τon is a 600μs pulse
Much better when a 20μs pulse is applied
It can be seen that the coating amount (welding amount) was lower. in this way,
Computer (CNC) for combining different waveforms by combining single pulses
Output with the best surface roughness and maximum machining amount
be able to.   Thus, the present invention does not merely repeat welding.
The coating surface is obtained by coating while removing convex parts.
The flattening is performed based on FIG.
explain. Fig. 9 shows the temporal energy characteristics of the pulse discharge.
The horizontal axis indicates time (μs) and the vertical axis indicates energy (V).
You. Welding and processing to remove part of the coating layer once welded
9A by using the same coating material electrode 1,
As shown in the figure, the pulse for welding is different from the pulse.
Coating processing by combining pulses to eliminate the changed conditions
And the pulse under the same condition as shown in FIG. 9B.
A method that simultaneously performs welding and removal during one welding.
is there.   Using the coating material 1 containing 5% Ni in WC as an electrode,
Removed on the WCCo surface with a processing gap of 5 μm while rotating with PM
When micro-welding including processing is performed,
In the formula, Ip60A, τon80μs, τoff80μs for welding
Condition pulse, Ip60A for removal processing, τon2μs,
Combined with the pulse of τoff2μs in the ratio of 3: 2
Sometimes it can be coated to a thickness of 65 μm,
The surface roughness is 4.5μRmax uneven, while the removal
Table when only welding is performed by the conventional method that does not include
The surface roughness is 18μRmax and the thickness of the coating layer is 45μm.
Some parts were not welded at all. Also, FIG. 9B
When micro-welding is performed in the method shown in FIG.
It was almost the same as when, but the welding speed was about 85% of the case of A
A was faster. And when not removing
It was found that the efficiency was improved three times as compared with that of the first embodiment.   Energize the wear-resistant and corrosion-resistant coating material of the present invention.
As a device for melting and coating a predetermined amount by
In addition to the device described above, the device shown in FIGS. 10, 11 and 12
Is available. The device shown in Fig. 10 uses an energized wire explosion
With a mask 41 having a predetermined pattern to be covered.
Cover the sliding surface of the material 15 constituting the sliding member, and place a
Place the arm 42 and inactivate the cylinder 24 in the hood 42
Reactive gas or reactive gas to supply wire 43 for coating.
High voltage is applied while sequentially feeding by paired pinch rollers 44
The wire 43 is masked by causing the wire to explode.
Melted and scattered on the top, the covering surface 45 according to the pattern of the mask 41
It is something that you get.   In the apparatus shown in FIG. 11, a pair of coating materials 1 are opposed to each other.
In the meantime, apply the voltage pulse as described above to cover
A layer 51 is obtained, wherein the material 15 is a ceramic,
Used when it is an insulator such as resin.   The device shown in FIG. 12 uses the device shown in FIG.
And apply a further electric field to give directionality to the molten coating material.
To effectively cover the material 15
The conductive ink, even if it is insulating.
Providing a conductive film made conductive by cloth, chemical plating, etc.
From the power supply 63 to the other electrode 62
An electric field is formed by applying a DC voltage.
You. In this case, even if the mask 41 shown in FIG. 11 is used.
Good, but conductive ink can be applied and chemical
By forming the key in a predetermined pattern, the pattern is covered.
Can be   The discharge (pallet) is applied to the sliding surface of the material that constitutes the sliding member.
Has been described as coating using
Or, in some cases, micro-welding using ultrasonic
A desired coating layer can also be formed.   And the coating layer on the sliding surface reduces the friction coefficient.
Power by friction rather than just forming
It is also used in such cases. For example, with a piezoelectric element
Minute irregularities in the area where the driving element vibrator contacts the driving element
Abrasion-resistant materials in the form of 10-
Coat to about 25 μm. FIG. 13 (a) and FIG.
As shown in FIG. 7B, the piezoelectric ceramic driving body 65
WC, TiC, B on the surface_FourC from materials with high abrasion resistance such as
When a dotted or island-shaped coating layer 66 is formed, the conventional hardened steel
Has an abrasion resistance of 10 to 50 times or more, and a friction coefficient μ = 0.
It was 2 or more, and it was possible to drive very effectively. What
In addition, this driving body 65 is used not only for a disk but also for a linear driving body.
You can also.   In addition, as illustrated in FIG.
Conversion of the full-toroidal system (not shown)
In a speed control device of a high-speed machine, it is a friction wheel that transmits friction.
Contact surfaces of the movable vehicle 67, the driving vehicle 68, and the driven vehicle 69,
WC, TiC, TiN, B_FourC, SiC, Al_TwoO_ThreeFriction resistant materials
Using the coating material 1 made by mixing the ingredients alone or
With a thickness of about 10 to 30 μm, places such as waveforms, point distributions, etc.
When the coating layer is formed in a fixed pattern, the resistance is 5 to 50 times
It becomes abrasive and the slip rate is about 1/5 of the conventional one, and the effect is large
Good. The rotation ratio can be generally used from about 1:10 to about 1:30.
And the slip rate is good with a maximum of about 10%. 〔The invention's effect〕   The present invention utilizes discharge (pulse discharge),
With a coating material using a laser, ion beam, plasma, etc.
Performs vibration or a combination of vibration and rotation on an electrode
In addition, the coating is welded. At that time, one by one welding
X, Y, Z
Relative movement in each axis direction of
Weld. In addition, the thickness, surface roughness,
Depending on the coating conditions and coating shape, the welding frequency and
Feeding in the X, Y, and Z directions can be arbitrarily selected. The present invention
Alloys that combine two or more materials in a medium to be diffused
Welding of micro minute parts such as
It is. Because the welding is repeated thin welding
It becomes fine alloy crystals. Therefore, the sliding surface of the sliding member
In addition, abrasion resistance, including the formation of oil grooves in arbitrary patterns
An abrasion-resistant and corrosion-resistant coating layer can be obtained. Soshi
In addition to obtaining the sliding surface of the sliding member, micro welding
Synthesis of functional materials, processing to wrap the surface of the material with different materials,
Synthesis of magnet material, hard material, soft material, or semi-hard
Coating of materials etc., synthesis of superconducting material, sliding, processing into screw parts,
It can be used for processing pumps and the like. For magnet material
At 1 atmN_TwoIp80A, τon1.1μs on Fe material surface in gas
Micro-weld FeB under the conditions, and further superimpose Nd
Welded and magnetically treated in a magnetic field of 25000 Oe, resulting in 65 MGO
e became a magnet.   In addition, using a coating material containing 2% Ti in Cu
And the output of 500W CO to Fe_TwoMicro welded by laser
After that, when two phases were separated at 1000 ° C for 1 hour, 55%
Superplastic working was completed.   Furthermore, Al_TwoO_ThreeAnd Y_TwoO_ThreeUsing a 150 W YAG laser
As a result of micro-welding, a pressure of 25 MPa was applied at 1100 ° C.
And could be plastically processed at 0.2 mm / min.   In addition, TbFCo magneto-optical material, Nb, Ti, Sn micro
By welding (NbTi)_ThreeSuperconducting material of Sn or TiAl_FiveSm_{twenty five}Cryogenic
Material, SnO by air welding_TwoOr LiTaO_Three, BaTiO_ThreeEtc.
It also has an effect that a functional material can be easily synthesized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating an apparatus for practicing the present invention, and FIGS. 2 (a), (b), (c), (d), (e), (f), (g), and (h) FIG. 3 is a diagram exemplifying a pattern of a sliding surface by micro welding of the present invention, FIG. 3 is a diagram comparing the effect of the sliding surface of the present invention with another sliding surface, and FIG. Diagram illustrating micro-welding while measuring the surface, FIG. 5 (A) (Aa)
(B), (Bb), (C), (Cc), (D), (Dd), (E), and (Ee) show the waveforms of the discharge pulses used in the micro-welding of the present invention. FIG. 8 shows the effect of the micro-welding by the waveform of the discharge pulse of the present invention and the conventional discharge pulse, FIG. 8 shows the effect of the discharge time of the discharge pulse, and FIGS. FIGS. 10, 11 and 12 are diagrams illustrating another example of a device for obtaining the coating layer of the present invention, and FIGS. 13 (a) and (b) are diagrams illustrating the present invention. FIG. 14 is a view of a transmission using the present invention. 1 ... coating material 2 ... spindle 3 ... vibrating piece 5 ... electromagnets 14, 17, 19 ... servo motor 23 ... cover 24 ... cylinder 26 ... NC device 27 ... excitation power supply 28 ... processing power supply

Claims (1)

(57) [Claims] A sliding member comprising a coating material having wear resistance and corrosion resistance melted by electric discharge or laser or the like, and the molten coating material is coated on a sliding surface in a predetermined pattern. 2. The sliding member according to claim 1, wherein a coating material is coated on the sliding surface by drawing a predetermined pattern by NC control. 3. The sliding member according to claim 1, wherein the sliding surface is coated with a coating material in a predetermined pattern shape such as a point shape, a band shape, or a circular shape. 4. The material of the sliding member is Al, Ti, or Al, Ti
2. The sliding member according to claim 1, wherein a rare earth element is added to the alloy or the alloy. 5. The sliding member according to claim 1, wherein the sliding surface to be coated is a discharge surface that has been subjected to a discharge machining process in advance. 6. The sliding member according to claim 1, wherein the sliding surface is coated with a coating material in an inert gas or a reactive gas. 7. 2. The sliding member according to claim 1, wherein a coating material is coated on the sliding surface by drawing a predetermined pattern by a micro welding method controlled by CNC. 8. Rotation and vibration toward the sliding surface are given to the coating material, and X, Y, and Z are applied between the material forming the sliding member and the coating material.
2. The sliding member according to claim 1, wherein the coating material is coated on the sliding surface by a welding action by electric discharge for each vibration while the relative movement in the axial direction is given. 9. A linear coating material is arranged on a sliding surface masked by a mask having a desired pattern, and the coating material is coated on the sliding surface by applying a current to the coating material and causing a linear explosion. The sliding member according to claim 1. 10. Placing a pair of coating electrodes facing each other on a sliding surface masked by a mask having a desired pattern,
The sliding member according to claim 1, wherein the sliding material is coated on the sliding surface by discharging between the electrodes. 11. The sliding member according to claim 1, wherein the sliding surface is a contact surface between the element vibrating body driven by the piezoelectric element and the driving body. 12. The sliding member according to claim 1, wherein the sliding surface is a friction transmitting surface in a rotation speed control device of a transmission.