CN106048511B - A kind of metal surface mechanical assistance chemical heat treatment method - Google Patents
A kind of metal surface mechanical assistance chemical heat treatment method Download PDFInfo
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- CN106048511B CN106048511B CN201610356621.2A CN201610356621A CN106048511B CN 106048511 B CN106048511 B CN 106048511B CN 201610356621 A CN201610356621 A CN 201610356621A CN 106048511 B CN106048511 B CN 106048511B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
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Abstract
The present invention relates to a kind of metal surface mechanical assistance chemical heat treatment method, step are as follows：Step 1: treat thermo-chemical treatment metal works substrate pretreated；Step 2: prepared by thermo-chemical treatment electrode；Step 3: chemical heat treatment apparatus assembles；Step 4: prepared by thermo-chemical treatment；Step 5: the grinding and polishing of thermo-chemical treatment metal works matrix；The present invention has equipment simple, and input is small, maintenance and low processing cost；Strengthening layer is mainly solid solution structure, fine and close, uniform, quality height；For metallurgical binding, without sharp interface between strengthening layer and matrix, with reference to power height；Thermo-chemical treatment is carried out at the same time with grinding process, can obtain the surface finish of low surface roughness, high brightness, without secondary operation such as polishing, deburrings；Shape, precision to workpiece can realize the processing to composite material, thin-wall part, strong applicability without particular/special requirement；It is easy to operate, easy, it is efficient, it can be used in the large-area treatment of workpiece.
Description
Technical field
The present invention relates to technical field of surface, more particularly to a kind of metal surface mechanical assistance thermo-chemical treatment side
Method.
Background technology
In modern heat treatment technology, thermo-chemical treatment proportion is increasing；By taking auto parts as an example, about 70% heat
Processing uses chemical heat treatment process；No matter which kind of chemical heat treatment technology, if dividing by the physical state of penetration enhancer, can divide
For：Gas oozes, plasma oozes, solid oozes, liquid oozes, paste body oozes.
Wherein, solid oozes, liquid oozes, paste body oozes of high cost, complex process, poor performance, and it is limited to ooze element, is suitable only for
The parts thereof for having particular demands uses.
It is two kinds of most widely used chemical heat treatment processes that gas, which blends plasma and oozes, but there is also deficiency；Gas, which oozes, to be deposited
The shortcomings that have：(1) long processing period, efficiency are low；(2) deep layer brittleness is big, quality controllability is poor；(3) equipment is complicated, the energy and
Gas consumption is big；(4) it can not achieve local strengthening processing；(5) temperature is high, particularly the difficult material requirements higher such as titanium alloy
Treatment temperature, tissue to parts, mechanical property produce greatly negative effect.
Plasma, which oozes existing deficiency, to be had：(1) equipment, processing procedure technical requirements are high；(2) there are atomic volume stress,
Be not suitable for processing thin-wall part, composite material etc.；(2) there are wall and corner effect, cause processing uneven；(3) equally, it is directed to titanium
The non-ferrous metals such as alloy, it is high there are treatment temperature, cause part tissue and mechanical properties decrease.
The document in terms of new process development《Titanium alloy electric discharge surface Research on Carburizing》Disclose a kind of arteries and veins using capacitance
Graphite electrode material is deposited on metal base surface and reacted with matrix by impulse electricity, the method for forming strengthening layer；However,
Micro-arc spark deposition velocity is slow, efficiency is low, causes the technology to be suitable only for micro the repairing of processing precision component surface loss-in-weight-type defect
Again, it is larger (coating layer thickness ＞ 0.25mm) to be unsuitable for reparation thickness, is less suitable for the processing of larger area；And processing work
Skill is complicated, cumbersome, it is necessary to thicken the flows such as reparation, grinding equalizing through over mechanical processing, built-up welding；Therefore, micro-arc spark deposition skill
The application field of art is extremely limited.
Document《Flexible Ti electrode electric spark synthesizes TiN coatings》、《The experiment of flexible electrode titanium alloy surface electrospark impregnation is ground
Study carefully》Disclose a kind of flexible electric spark deposition method；Relative to traditional electric spark deposition technology, the technique is only in melt deposition speed
Improve to some extent in rate and quality control, but it is more obvious the defects of the technique：(1) technique does not solve electric spark deposition speed
Slowly, the low deficiency of efficiency；(2) electrode size becomes larger, and causes scene or difficulty increase hand-manipulated；(3) it is more abundant in order to obtain
Spark discharge effect and stability, it is necessary to assure the clearance control in circular wire tray between Single lead silk and matrix is reasonable
In the range of, and strengthening layer fully relies on the deposition of electrode and obtains, and causes that the consumption of monofilament in process is big, wire tray size becomes
Change greatly, therefore, it is difficult to carry out long-time, large-area treatment；Wherein, document《Flexible Ti electrode electric spark synthesizes TiN coatings》In
Described limited with the wire electrode material selection of filling nitrogen gas reaction, the TiN of formation is ceramic material, and brittleness is big, is applicable in
Scope smaller；Document《Flexible electrode titanium alloy surface electrospark impregnation experimental study》In, made using the high-energy discharge of electric spark
Vigorous reaction formation oxide occurs with air with fusing metal surface and there are a large amount of particulate electrode impurities of materials, coating are equal
Even property is poor, consistency is low, brittleness is big, and surface roughness is difficult to control.
Chinese patent notification number CN 101817159A, disclose a kind of " flexible electrode piece surface electric spark grinding polishing
Method, it is characterized in that：Speed regulating motor drives conductive flexible electrode rotary, in flexible electrode with leading to as the piece surface of another pole
Enter the pulse power/direct current, for insulated working platform under the drive of stepper motor, flexible electrode is close to piece surface, reaches and puts
During electric gap, spark discharge is produced, polishing medium is sprayed into region of discharge or region of discharge is invaded polishing medium, utilize fire
Flower discharge energy, the surfacing of ablation piece surface projection, while rotating flexible electrode has machinery to piece surface
Ablation, rotating flexible electrode drive polishing medium to have polishing action to piece surface "；The technique and traditional electric spark
Grinding-polishing process principle is identical, i.e., achievees the purpose that polishing by the projection of capacitor pulse discharge removal workpiece surface, and
Reduce the requirement to workpiece accuracy；Equally, must assure that during technique skilled worker between brush and workpiece has suitably
Discharging gap, therefore the mechanical grinding effect of brush can be ignored；On the contrary due to strong stirring of the flexible electrode to liquid
And its caused large drag forces, protection and process to equipment have put forward the requirement of higher；On the other hand, though the technique
Vigorous reaction in above-mentioned document between melt and medium has so been protected from by polishing medium, but has been lost electric spark
Invigoration effect；Therefore, which is suitable only for some small-sized, fine parts deburring processing, it is difficult to the application that puts it over, especially
Be handle big part component, large-area treatment or need preferably strengthen effect when, the defects of technique, becomes apparent from.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of metal surface mechanical assistance chemical heat treatment method, it has
Have that equipment is simple, input is small, safeguards and low processing cost；Strengthening layer is mainly solid solution structure, fine and close, uniform, quality height；
For metallurgical binding, without sharp interface between strengthening layer and matrix, with reference to power height；Thermo-chemical treatment is carried out at the same time with grinding process,
The surface finish of low surface roughness, high brightness can be obtained, without secondary operation such as polishing, deburrings；To workpiece
Shape, precision can realize the processing to composite material, thin-wall part, strong applicability without particular/special requirement；Easy to operate,
It is easy, it is efficient, it can be used in the large-area treatment of workpiece.
In order to solve the above technical problems, the present invention uses following technical proposals：A kind of metal surface mechanical assistance chemical heat
Processing method, step are as follows：
Step 1: treat thermo-chemical treatment metal works substrate pretreated：Thermo-chemical treatment metal works matrix table is treated in removal
Greasy dirt, oxide skin, the work hardening layer in face, are cleaned, even curface state, so that follow-up electrothermal alloyization is more equal
Even, technique is more stable, stand-by；
Step 2: prepared by thermo-chemical treatment electrode：Selection thermal conductivity factor is good, fusing point is higher than pending metal works matrix
Conductive material is prepared into conductive fiber/tow or conductive casters cloth material Shu Zuowei electrode materials, by dystectic conductive fiber/silk
Beam is fixed on conductive brush body or conductive casters cloth material beam is fixed on conductive sized flap wheel, stand-by；The structure is in thermo-chemical treatment
In process, the point contact of dystectic thermo-chemical treatment conduction tow and metal works matrix surface forms high resistance,
And then produce substantial amounts of resistance heat；Under resistance heat and frictional heat collective effect, make workpiece substrate surface be brought rapidly up to nitriding,
Carburizing is oozed more than the temperature spot of oxygen, or even most top layer is melted, and realizes being total to for top layer carburizing, oxygen, nitrogen, or multiple element
Ooze, and the solid solution structure without brittleness oxidation or nitride is obtained from cooling effect by the quick of matrix, realize chemical heat
Processing；Such chemistry repeatedly is oozed, spread, quenching effect, achievees the purpose that deep layer is strengthened；
Step 3: chemical heat treatment apparatus assembles：Conductive brush or conduction sized flap wheel that step 2 prepares are fixed on height
On fast motion motor, and certain pressure is continuously applied in vertical pending metal works matrix surface direction, to ensure brush
Superfine fibre/tow alloy material or sized flap wheel conductive casters cloth material beam and step steady metal works matrix surface all the time
Keep being in close contact, ensure that strengthening layer is fine and close, uniform, the material such as no brittleness nitride, oxide and electrode material is formed, and is avoided
Superfine fibre/tow alloy material or conductive casters cloth material beam are separated with metal works matrix, produce gap, form arc discharge,
The violent oxidation of pending matrix surface generation, nitridation is set to form brittle ceramic phase, or ablation electrode material pollutes pending table
Phenomena such as face；Conductive brush or conductive sized flap wheel are connected with positive pole, power cathode is connected with metal works matrix, electrode
The effect of material is that the electrical contact of high value is formed with workpiece substrate, produces resistance heating and generation frictionally heats effect, make to treat
Processing component top layer reaches more than aerochemistry heat treatment temperature point；Simultaneously as electrode material fusing point is high, heat conduction is good, and it is high
The cooling effect for the cold air stream that speed movement produces and electrode material connect positive pole, electrode material is maintained well
Stability, will not melt, pollute phenomena such as matrix, ensure that the low consumption of electrode material, complete thermo-chemical treatment and prepare
Preceding equipment assembling, the present invention is to the shape of workpiece, precision without particular/special requirement, strong applicability；And easy to operate, easy, processing
It is efficient, it can be used in large area, the surface Hardening Treatment of complex part；
Step 4: prepared by thermo-chemical treatment：Start high-speed motion motor, conductive fiber/tow brush or conductive casters cloth exist
Treat on thermo-chemical treatment metal works matrix that specific track continuation is moved and covered and entirely treat thermo-chemical treatment metal works
Surface, complete a process cycle, as conductive casters cloth sized flap wheel on thermo-chemical treatment metal works matrix is treated by S-shaped track
Continuation moves and covers the whole surface for treating thermo-chemical treatment metal works, completes a process cycle, the continuity
Refer to the proper displacement route for selecting electrode material in workpiece surface, achieve the purpose that uninterrupted, continuous processing；In a processing
In cycle, conductive fiber/tow brush or conductive casters cloth sized flap wheel produce the high speed pressurizeed with metal works matrix surface
Fricting movement；While high-speed motion motor is started to work, connect high current it is straight/alternating current, start thermo-chemical treatment, repeatedly the cycle
Property processing 5 times -50 times, unit area add up be powered processing 60s-180s, the periodicity refer to handle surface temperature reduce after,
Handled again, obtain deep layer or effect is strengthened in more preferably thermo-chemical treatment；In process, electrode material and workpiece
Surface forms the point contact of numerous high value, and then produces substantial amounts of resistance heat；Under resistance heat and frictional heat collective effect,
Workpiece surface is set to be brought rapidly up to nitriding, carburizing or ooze more than the temperature spot of oxygen, or even most top layer is melted, at this time, air
In nitrogen, carbon and oxygen element penetrate into metal works matrix, realize being total to for top layer carburizing, oxygen, nitrogen, or multiple element
Ooze；Meanwhile between electrode and workpiece high-speed mobile produce cold air stream and workpiece substrate deep layer cooling effect under, table
Quenching phenomenon at a high speed occurs for surface strengthening layer, forms Intensive intervention body structure；Such chemistry repeatedly is oozed, spread, quenching effect, is reached
The purpose that deep layer is strengthened；
Step 5: the grinding and polishing of thermo-chemical treatment metal works matrix：Obtaining at the preferable chemical heat of step 4
After managing strengthening layer, cut-out supply high current is straight/and alternating current, continues to allow high-speed rotary motor to drive conductive fiber/tow brush or lead
The metal works matrix relative motion of electricity wheel cloth sized flap wheel and step 4 for a period of time, thermo-chemical treatment and grinding process at the same time into
OK, the surface finish of low surface roughness, high brightness can be obtained, without secondary operation such as follow-up polishing, deburrings,
The process for also needing in addition be ground and polish in the prior art is saved, completes the grinding and polishing of metal works matrix.
The present invention further technical solution be：
Preferably, in order to further improve thermo-chemical treatment effect, sandblasting, mechanical grinding grinder can be used in the step 1
Skill removes greasy dirt, oxide skin and the work hardening layer for treating thermo-chemical treatment metal works matrix surface.
Preferably, in order to further improve thermo-chemical treatment effect, conductive fiber/tow described in the step 2
Diameter 0.2mm-0.8mm, density 100 piece/cm of the superfine fibre/tow on metal brush2- 500/cm2。
Preferably, it is vertical in the step 3 to be applied to high-speed rotary motor in order to further improve thermo-chemical treatment effect
The pressure value 0.01Mpa-0.05Mpa added.
Preferably, in order to further improve thermo-chemical treatment effect, the fricting movement of the step 4 high speed includes electricity
Two kinds of movements between particle and workpiece, between electrode material and workpiece on the material of pole, wherein, particle is relatively fast on electrode material
Spend 0.5m/s-20m/s, electrode material relative to workpiece substrate velocity of displacement 0.01m/s-0.05m/s；The current density of high current
5A/cm2-50A/cm2, its rotating speed of high-speed motion motor is 1800r/min-3000r/min.
Preferably, in order to further improve thermo-chemical treatment effect, in the step 5 cut-out supply high current it is straight/alternating current
It is 5s-20s to carry out the high-speed rotating time.
Preferably, the material for treating thermo-chemical treatment metal works matrix is 304 stainless steel materials, Titanium board (TA1)
Plate, No. 45 steel plates or No. 45 rod irons.
Preferably, in order to further improve thermo-chemical treatment effect, the conductive material that thermal conductivity factor is good, fusing point is high is prepared into
The material of conductive fiber/tow be tungsten filament, nickel wire or pure titanium silk.
Beneficial effects of the present invention：
The present invention has equipment simple, and input is small, maintenance and low processing cost；Strengthening layer is mainly solid solution structure,
Fine and close, uniform, quality height；For metallurgical binding, without sharp interface between strengthening layer and matrix, with reference to power height；Thermo-chemical treatment with
Grinding process is carried out at the same time, and can obtain the surface finish of low surface roughness, high brightness, without polishing, deburring
Etc. secondary operation；Shape, precision to workpiece can realize the processing to composite material, thin-wall part without particular/special requirement, fit
It is strong with property；It is easy to operate, easy, it is efficient, it can be used in the large-area treatment of workpiece.
Brief description of the drawings
Fig. 1 is 1 surface XRD spectrum of the embodiment of the present invention.
Fig. 2 is 2 surface XRD spectrum of the embodiment of the present invention.
Fig. 3 is 3 surface XRD spectrum of the embodiment of the present invention.
Fig. 4 is section hardness curve map after the embodiment of the present invention 4 is handled.
Fig. 5 is section hardness curve map after the embodiment of the present invention 5 is handled.
Embodiment
Embodiment 1
Shown in Figure 1, a kind of metal surface mechanical assistance chemical heat treatment method, its operating procedure is as follows：
Step 1: treat oxygen, nitrogen permeation processing metal works substrate pretreated：
Using 304 stainless steel materials of 100 × 2mm of Φ as oxygen, nitrogen permeation processing metal works matrix, through sandblasting, polishing
Greasy dirt, oxide skin, the work hardening layer on 304 stainless steel materials surfaces are removed, it is stand-by；
Step 2: prepared by oxygen, nitrogen permeation processing electrode：
Select the tungsten filament of dystectic 0.2mm diameters that the tungsten filament is fixed on conductive rod, is made close as electrode material
Spend 500/cm2, Φ 30mm bowl-type brush, it is stand-by；
Step 3: oxygen, nitrogen permeation processing equipment assemble：
The taper brush that step 2 prepares is connected on high-speed motion motor, and in vertical 304 stainless steel materials surface side
To 0.01Mpa pressure is continuously applied, to ensure 304 stainless steel materials surfaces of the tungsten filament of taper brush and step steady all the time
Keep being in close contact, taper brush is connected with positive pole, power cathode is connected with 304 stainless steel materials, and it is common to complete oxygen, nitrogen
Ooze the equipment assembling before prepared by processing；
Step 4: prepared by oxygen, nitrogen permeation processing：
Start high-speed motion motor, its rotating speed is 1800r/min, its particle relative velocity in 1m/s, bowl-type brush with
The speed of 0.01m/s, using stainless steel materials center as starting point, is moved simultaneously on 304 stainless steel materials by helical trajectory continuation
The surface of whole 304 stainless steel materials is covered, completes a process cycle；In a process cycle, taper brush and 304 is not
The fricting movement for steel board surface generation high speed of becoming rusty；While high-speed motion motor is started to work, 50A/cm is connected2Direct current
Electricity, starts oxygen, nitrogen permeation processing, repeatedly cyclical process 50 times, and unit area adds up the processing 180s that is powered, obtains preferable
Oxygen, the surface peening layer of nitrogen symbiosis；
Step 5: oxygen, the grinding and polishing of nitrogen permeation processing metal works matrix：
Obtain the preferable oxygen of step 4, nitrogen symbiosis surface peening layer after, cut off the direct current of supply, continue to allow at a high speed
Motion motor drives taper brush, by helical trajectory continuation movement 5s, to complete 304 on 304 stainless steel materials of step 4
The grinding and polishing of stainless steel materials.
Embodiment 2
Shown in Figure 2, a kind of metal surface mechanical assistance chemical heat treatment method, its operating procedure is as follows：
Step 1: treat carbon, oxygen, nitrogen permeation processing metal works substrate pretreated：
Using Titanium board (TA1) plate of 100 × 2mm of Φ as carbon, oxygen, nitrogen permeation processing metal works matrix, through sandblasting,
Polishing removes the greasy dirt, oxide skin, work hardening layer of Titanium board (TA1) plate surface, stand-by；
Step 2: prepared by carbon, oxygen, nitrogen permeation processing electrode：
Select the tungsten filament of dystectic 0.3mm diameters that the tungsten filament is fixed on conductive rod, is made close as electrode material
Spend 100/cm2, Φ 30mm taper brush, it is stand-by；
Step 3: carbon, oxygen, nitrogen permeation processing equipment assemble：
The taper brush that step 2 prepares is connected on high-speed motion motor, and in vertical Titanium board (TA1) plate surface
Direction is continuously applied 0.05Mpa pressure, to ensure Titanium board (TA1) plate surface of the tungsten filament of taper brush and step steady
Remain close contact, taper brush is connected with positive pole, power cathode is connected with Titanium board (TA1) plate, is completed
Equipment assembling before carbon, oxygen, nitrogen permeation processing preparation；
Step 4: carbon, oxygen, nitrogen permeation processing preparation：
Start high-speed motion motor, its rotating speed is 1800r/min, its particle relative velocity reaches as high as 2.8m/s, taper
Brush using the speed of 0.05m/s on Titanium board (TA1) plate using stainless steel materials center as starting point, continue by helical trajectory
Property move and cover the surface of whole Titanium board (TA1) plate, complete a process cycle；In a process cycle, taper
Brush produces the fricting movement of the high speed of pressurization with Titanium board (TA1) plate surface；While high-speed motion motor is started to work,
Connect 10A/cm2Direct current, start carbon, oxygen, nitrogen permeation processing, cyclical process 5 times repeatedly, unit area adds up to handle
60s, obtains preferable carbon, oxygen, the surface peening layer of nitrogen symbiosis；
Step 5: carbon, the grinding and polishing of oxygen, nitrogen permeation processing metal works matrix：
Obtain the preferable oxygen of step 4, nitrogen symbiosis surface peening layer after, cut off the direct current of supply, continue to allow at a high speed
Motion motor drives taper brush, by helical trajectory continuation movement 15s, to be completed on Titanium board (TA1) plate of step 4
The grinding and polishing of Titanium board (TA1) plate.
Document《Flexible electrode titanium alloy surface electrospark impregnation experimental study》、《Flexible Ti electrode electric spark synthesis TiN is applied
Layer》The pulse power used, and using the gap between copper wire and matrix, form large spot Spark Discharges, electric discharge production
Raw high energy makes Titanium base preferentially occur with the oxygen in air or filling nitrogen, and vigorous reaction formation main component black is sub- to be aoxidized
Titanium, titanium nitride (TiN) brittle ceramic coating, and electrode material is connect into the consumption that power cathode accelerates electrode material, acutely
Spark discharge the coating structure that a small amount of brass of ablation is mingled with is caused to electrode.
In the present embodiment, using dystectic tungsten filament brush as electrode material, and gapless is obtained by the normal pressure that presses
Close contact, and electrode connects positive pole, avoids consumption of the spark discharge to electrode material and the pollution to matrix, relies on
Resistance heating and frictional heat realize the change of temperature, diffusion-controllable by the temperature that is heated to of matrix surface, and using air as gas source
Ooze, and obtains the solution strengthening layer of no brittlement phase.
Embodiment 3
Shown in Figure 3, a kind of metal surface mechanical assistance chemical heat treatment method, its operating procedure is as follows：
Step 1: treat that single side oxynitriding handles metal works substrate pretreated：
Metal works matrix is handled using No. 45 steel plates of 100 × 20 × 2mm as single side oxynitriding, through sandblasting, polishing
Greasy dirt, oxide skin, the work hardening layer of No. 45 surface of steel plate are removed, it is stand-by；
Step 2: prepared by single side oxynitriding processing electrode：
Select the nickel wire of dystectic Φ 0.4mm diameters that the nickel wire is fixed on conductive rod, is made as electrode material
300/cm of density2, 100 × 30mm of Φ disk brush, it is stand-by；
Step 3: single side oxynitriding processing equipment assembles：
The disk brush that step 2 prepares is connected on high-speed motion motor, brush is perpendicular to No. 45 steel plates, and vertical
No. 45 surface of steel plate directions are continuously applied 0.03Mpa pressure, to ensure the nickel wire on disk brush circumferencial direction with step surely
No. 45 standby surface of steel plate remain close contact, and disk brush is connected with positive pole, power cathode and No. 45 steel plates
Connection, completes the equipment assembling before prepared by the processing of 100 × 20 single side oxynitridings；
Step 4: prepared by the processing of single side oxynitriding：
Start high-speed motion motor, its rotating speed is 2500r/min, and the relative velocity of its table contact particle reaches as high as 4m/
S, disk brush are moved and covered whole from one end of No. 45 steel plates to the other end by S-shaped track continuation with the speed of 0.03m/s
The surface of a No. 45 steel plates, completes a process cycle；In a process cycle, disk brush and No. 45 surface of steel plate produce
The fricting movement of high speed；While high-speed motion motor is started to work, 5A/cm is connected2Direct current, start 100 × 20 single sides
Oxynitriding processing, repeatedly cyclical process 8 times, unit area add up to handle 120s, obtain preferable single side oxynitriding
Surface peening layer；
Step 5: the grinding and polishing of single side oxynitriding processing metal works matrix：
After the surface peening layer of the preferable single side oxynitriding of step 4 is obtained, the direct current of supply is cut off, continues to allow
High-speed motion motor drives disk brush to be moved 20 seconds by S-shaped track continuation on No. 45 steel plates of step 4, completes No. 45
The grinding and polishing of steel plate.
Embodiment 4
Shown in Figure 4, a kind of metal surface mechanical assistance chemical heat treatment method, its operating procedure is as follows：
Step 1: treat that oxynitriding handles metal works substrate pretreated：
Metal works matrix is handled using No. 45 rod irons of 60 × 100mm of Φ as oxynitriding, 45 are removed through sandblasting, polishing
Greasy dirt, oxide skin, the work hardening layer on number rod iron surface, it is stand-by；
Step 2: prepared by oxynitriding processing electrode：
Select dystectic II -300 carbon cloth to be not added with any abrasive material as electrode material, be processed into outside diameter 100mm,
The interior sized flap wheel through 20mm, thickness 25mm, it is stand-by；
Step 3: oxynitriding processing equipment assembles：
Sized flap wheel and No. 45 rod irons of step steady that step 2 prepares are connected on two high-speed rotary motors respectively,
Equidirectional spinning motion (relative velocity is up to 25m/s) is kept, and is continuously applied 0.02Mpa pressure therebetween, to ensure
The surface of sized flap wheel and No. 45 rod irons remains close contact, and sized flap wheel is connected with positive pole, power cathode and No. 45
Rod iron connects, and completes the equipment assembling before prepared by oxynitriding processing；
Step 4: prepared by oxynitriding processing：
Start two high-speed rotary motors at the same time, its rotating speed is 3000r/min；High-speed rotary motor is started to work same
When, connect 8A/cm2Direct current, start oxynitriding processing, conduction time 120s, obtains the surface of preferable oxynitriding
Strengthening layer；
Step 5: the grinding and polishing of oxynitriding processing metal works matrix：
After the surface peening layer of the preferable oxynitriding of step 4 is obtained, the direct current of supply is cut off, continues to allow two
High-speed rotary motor continuation rotates 10 seconds, completes the grinding and polishing of No. 45 rod irons.
Embodiment 5
Shown in Figure 5, a kind of metal surface mechanical assistance chemical heat treatment method, its operating procedure is as follows：
Step 1: treat carbon, oxygen, nitrogen permeation processing metal works substrate pretreated：
Using pure titanium (TA1) plate of 100 × 2mm of Φ as carbon, oxygen, nitrogen permeation processing metal works matrix, through sandblasting, beat
Greasy dirt, oxide skin, the work hardening layer of pure titanium (TA1) plate surface are removed in removing, stand-by；
Step 2: prepared by carbon, oxygen, nitrogen permeation processing electrode：
Select the pure titanium silk of dystectic 0.8mm diameters that the pure titanium silk is fixed on conductive rod, is made as electrode material
Into 200/cm of density2, Φ 30mm taper brush, it is stand-by；
Step 3: carbon, oxygen, nitrogen permeation processing equipment assemble：
The taper brush that step 2 prepares is connected on high-speed motion motor, and in vertical pure titanium (TA1) plate surface side
To 0.04Mpa pressure is continuously applied, to ensure that the pure titanium silk of taper brush and pure titanium (TA1) plate surface of step steady begin
Keeping being in close contact eventually, taper brush is connected with positive pole, power cathode is connected with pure titanium (TA1) plate, completion carbon,
Equipment assembling before oxygen, nitrogen permeation processing preparation；
Step 4: carbon, oxygen, nitrogen permeation processing preparation：
Start high-speed motion motor, its rotating speed is 1800r/min, its particle relative velocity reaches as high as 2.8m/s, taper
Brush using the speed of 0.01m/s on pure titanium (TA1) plate using pure titanium (TA1) plate center as starting point, held by helical trajectory
Continuous property moves and covers the surface of whole pure titanium (TA1) plate, completes a process cycle；In a process cycle, taper
Brush produces the fricting movement of high speed with pure titanium (TA1) plate surface；While high-speed motion motor is started to work, 15A/ is connected
cm2Direct current, start carbon, oxygen, nitrogen permeation processing, cyclical process 10 times repeatedly, unit area add up handle 90s, obtain
Preferable carbon, oxygen, the surface peening layer of nitrogen permeation；
Step 5: carbon, the grinding and polishing of oxygen, nitrogen permeation processing metal works matrix：
Obtain the preferable carbon of step 4, oxygen, nitrogen permeation surface peening layer after, cut off the direct current of supply, continue to allow
High-speed motion motor drives taper brush to be moved 10 seconds by helical trajectory continuation on pure titanium (TA1) plate of step 4,
Complete the grinding and polishing of pure titanium (TA1) plate.
The parameter value contrast table of the present invention and the prior art
Note：1., 2., 3. Primary Reference《Flexible electrode titanium alloy surface electrospark impregnation experimental study》、《Flexible Ti electrode
Electric spark synthesizes TiN coatings》、《Titanium alloy electric discharge surface Research on Carburizing》
As described above, a kind of metal surface mechanical assistance chemical heat treatment method of the present invention, the embodiment described and figure, only
It is the preferable implementation result of the present invention, is not to be confined to the present invention, every, thunder approximate with structure of the invention, feature etc.
Same person, should all belong to the scope of protection of the invention.
Claims (8)
1. a kind of metal surface mechanical assistance chemical heat treatment method, it is characterised in that step is as follows：
Step 1: treat thermo-chemical treatment metal works substrate pretreated：
Greasy dirt, oxide skin and the work hardening layer for treating thermo-chemical treatment metal works matrix surface are removed, it is stand-by；
Step 2: prepared by thermo-chemical treatment electrode：
Select thermal conductivity factor is good, fusing point higher than the conductive material of pending metal works matrix be prepared into conductive fiber/tow or
Conductive casters cloth material Shu Zuowei electrode materials, which are fixed on conductive brush body or by conductive casters
Cloth material beam is fixed on conductive sized flap wheel, stand-by；
Step 3: chemical heat treatment apparatus assembles：
Conductive brush or conduction sized flap wheel that step 2 prepares are fixed on high-speed motion motor, and in vertical pending metal
Workpiece substrate surface direction is continuously applied certain pressure, to ensure the superfine fibre of brush/tow alloy material or sized flap wheel
Conductive casters cloth material beam and the metal works matrix surface of step steady remain close contact, by conductive brush or conduction thousand
Impeller is connected with positive pole, and power cathode is connected with metal works matrix, completes the equipment assembling before prepared by thermo-chemical treatment；
Step 4: prepared by thermo-chemical treatment：
Start high-speed motion motor, conductive fiber/tow brush is on thermo-chemical treatment metal works matrix is treated by spiral shape rail
Mark continuation moves and covers the whole surface for treating thermo-chemical treatment metal works, a process cycle is completed, alternatively, conductive casters
Cloth sized flap wheel, which is moved on thermo-chemical treatment metal works matrix is treated and covered by S-shaped track continuation, entirely treats thermo-chemical treatment
The surface of metal works, completes a process cycle；In a process cycle, conductive fiber/tow brush or conductive casters
Cloth sized flap wheel produces the fricting movement of the high speed of pressurization with metal works matrix surface；High-speed motion motor is started to work same
When, connect high current it is straight/alternating current, start thermo-chemical treatment, cyclical process 5 times -50 times repeatedly, unit area adds up at energization
60s-180s is managed, obtains preferable thermo-chemical treatment strengthening layer；
Step 5: the grinding and polishing of thermo-chemical treatment metal works matrix：
After the preferable thermo-chemical treatment strengthening layer of step 4 is obtained, cut-out supply high current is straight/alternating current, continues to allow and rotates at a high speed
When motor drives one section of the metal works matrix relative motion of conductive fiber/tow brush or conductive casters cloth sized flap wheel and step 4
Between, complete the grinding and polishing of metal works matrix.
A kind of 2. metal surface mechanical assistance chemical heat treatment method according to claim 1, it is characterised in that：Step 1
In sandblasting, mechanical milling tech can be used to remove treat greasy dirt, oxide skin and the processing of thermo-chemical treatment metal works matrix surface
Hardened layer.
A kind of 3. metal surface mechanical assistance chemical heat treatment method according to claim 1, it is characterised in that：Step 2
Described in conductive fiber/tow diameter 0.2mm-0.8mm, density of the superfine fibre/tow on metal brush 100/
cm2- 500/cm2。
A kind of 4. metal surface mechanical assistance chemical heat treatment method according to claim 1, it is characterised in that：The step
Pressure value 0.01MPa-the 0.05MPa that vertical pending metal works matrix surface direction is continuously applied in rapid three.
A kind of 5. metal surface mechanical assistance chemical heat treatment method according to claim 1, it is characterised in that：The step
The fricting movement of rapid four high speed includes two kinds of movements between particle and workpiece, between electrode material and workpiece on electrode material,
Wherein, on electrode material particle relative velocity 0.5m/s-20m/s, electrode material relative to workpiece substrate velocity of displacement
0.01m/s-0.05m/s；5 A/cm of current density of high current2-50A/cm2, its rotating speed of high-speed motion motor is 1800r/min-
3000r/min。
A kind of 6. metal surface mechanical assistance chemical heat treatment method according to claim 1, it is characterised in that：The step
Cut-out supply high current is straight in rapid five/and alternating current carried out the high-speed rotating time and added up to handle 5s -20s with unit area.
A kind of 7. metal surface mechanical assistance chemical heat treatment method according to claim 1, it is characterised in that：It is described to treat
The material of thermo-chemical treatment metal works matrix is 304 stainless steel materials, Titanium board TA1 plates, No. 45 steel plates or No. 45 rod irons.
A kind of 8. metal surface mechanical assistance chemical heat treatment method according to claim 1, it is characterised in that：Heat conduction system
Count, the material for conductive fiber/tow that the conductive material that fusing point is high is prepared into is tungsten filament, nickel wire or pure titanium silk.
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| US5145530A (en) * | 1989-05-18 | 1992-09-08 | Cassady William E | Method of surface hardening titanium and other metals |
| CN101817159A (en) * | 2010-03-26 | 2010-09-01 | 徐安阳 | Parts surface grinding and polishing method by electric spark at flexible electrode and system thereof |
| CN102899600A (en) * | 2012-09-12 | 2013-01-30 | 常州大学 | Boride ceramic coating prepared through electric spark deposition in-situ reaction and preparation method thereof |
| CN103540929A (en) * | 2013-09-30 | 2014-01-29 | 华北水利水电大学 | Cladding method for magnesium-based alloy surface wear-resistant coating |
| CN104164667A (en) * | 2014-09-15 | 2014-11-26 | 赵军军 | Method for preparing heterogeneous metal coating on steel surface by utilizing frictional heat |
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| US9643877B2 (en) * | 2013-12-23 | 2017-05-09 | MHI Health Devices, LLC. | Thermal plasma treatment method |
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|---|---|---|---|---|
| US5145530A (en) * | 1989-05-18 | 1992-09-08 | Cassady William E | Method of surface hardening titanium and other metals |
| CN101817159A (en) * | 2010-03-26 | 2010-09-01 | 徐安阳 | Parts surface grinding and polishing method by electric spark at flexible electrode and system thereof |
| CN102899600A (en) * | 2012-09-12 | 2013-01-30 | 常州大学 | Boride ceramic coating prepared through electric spark deposition in-situ reaction and preparation method thereof |
| CN103540929A (en) * | 2013-09-30 | 2014-01-29 | 华北水利水电大学 | Cladding method for magnesium-based alloy surface wear-resistant coating |
| CN104164667A (en) * | 2014-09-15 | 2014-11-26 | 赵军军 | Method for preparing heterogeneous metal coating on steel surface by utilizing frictional heat |
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