CN107058941B - Infiltration method and device are expanded in the heating of gear surface vacuum induction - Google Patents
Infiltration method and device are expanded in the heating of gear surface vacuum induction Download PDFInfo
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- CN107058941B CN107058941B CN201710344002.6A CN201710344002A CN107058941B CN 107058941 B CN107058941 B CN 107058941B CN 201710344002 A CN201710344002 A CN 201710344002A CN 107058941 B CN107058941 B CN 107058941B
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- reaction
- inner cavity
- gear
- reaction unit
- reaction vessel
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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
- C23C8/60—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 solids, e.g. powders, pastes
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
Abstract
It is heated the present invention provides a kind of gear surface vacuum induction and expands infiltration method, gear workpieces to be processed are placed on the workbench of reaction unit inner cavity, vacuum plant is vacuumized；Powder raw material enters inner cavity from feed hopper, enters in the reaction vessel below filter device through filter device screening；Induction coil heats after being powered, and so that the raising of gear workpieces temperature is met thermal expansion cementation process requirement, carries out the reaction of surface heat diffusion penetration.Thermal expansion infiltration method of the invention will not aoxidize, not decarburization, surface-brightening is high-quality due to heating workpiece under vacuum conditions so being heated and penetrating into the workpiece surface of coating；Power formulations can according to need adjustment, and atmosphere is controllable；Can individually or continuous feed, contact area is big, reaction uniformly, it is high-efficient；Using induction heating, workpiece can be made to heat rapidly, save working hour.
Description
Technical field
It is heated the present invention relates to a kind of gear surface vacuum induction and expands infiltration method, to the metal parts such as gear and material surface
The method and device of alloying element is expanded in vacuum induction heating, is mainly used for metal part and material surface metallurgical bonding coating
Preparation and surface alloying, belong to metal Surface Treatment Technique field.
Background technique
Gear is widely used in the fields such as Aeronautics and Astronautics, navigation, automobile as mechanically operated important component, so
And often because the flank of tooth fails to work on, therefore improving gear surface performance is research topic important at present.With section
The continuous development of skill, the transmission mechanism run under the conditions of special operation condition proposes increasingly higher demands to gear, such as gear table
Face high rigidity, high-wearing feature, high/low temperature weatherability and corrosion resistance and shielding property etc., since gear needs center toughness
Height, therefore main technique direction is surface strengthening technology at present.
Currently used material surface strengthening method mainly has: PVD(physical vapour deposition (PVD)), CVD(chemical vapor deposition),
The methods of the modification of high energy beam surface, electro-deposition, thermal spraying, thermo-chemical treatment, wherein infiltration technology is expanded as a kind of chemical heat in surface
Processing technique can infilter one or more of elements in metal material surface, on by the geometry of infiltration product and size influence
Very little, workpiece deformation is small, precision high-dimensional stability is good；Element and depth of penetration can be penetrated by selecting and controlling, make workpiece
Surface obtains different performance；Not by the limitation of workpiece shapes；Precious metal can be saved, cost is reduced.But expand cementation process technology mesh
The deficiencies of preceding working efficiency is high not enough, surface oxidation is serious is a problem to be solved, in response to this problem, existing skill
There is no suitable gear surface vacuum induction heating to expand the method and device seeped in art.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of the prior art, provide a kind of heating of gear surface vacuum induction expand infiltration method and
Device, to improve gear surface diffusion penetration efficiency, prevent gear surface from aoxidizing.
To achieve the above object, the invention provides the following technical scheme: infiltration side is expanded in a kind of heating of gear surface vacuum induction
Method, it is characterised in that the following steps are included:
1) gear workpieces to be processed are placed on the workbench of reaction unit inner cavity, closing sealing cover makes reaction unit
Inner cavity is closed, and opening is external to be vacuumized in the vacuum plant for vacuumizing interface, when the vacuum when inner cavity reaches requirement,
Close vacuum evacuation device；
2) powder raw material needed for diffusion penetration is entered reaction dress by the valve for opening the feed hopper being arranged on reaction unit
The inner cavity set, falls into filter device；
3) powder raw material is screened by filter device, and granularity is less than the particle of sieve granularity, under filter device
In the reaction vessel in face；Granularity is greater than the bulky grain of sieve mesh number, does not enter and participates in reaction in reaction vessel；
4) after powder raw material needed for diffusion penetration fully enters, power supply is connected, makes to be arranged in around reaction unit
Induction coil heats after being powered, and so that the raising of gear workpieces temperature is met thermal expansion cementation process requirement, it is anti-to carry out surface heat diffusion penetration
It answers；
5) after the hot diffusion penetration of gear surface, which reaches technique, to be required, stop hot diffusion penetration；It will be useless in reaction vessel
Reaction unit is discharged in feed powder end；
6) repetition is aforementioned 2) -5) the step of, thickness and Elemental redistribution are seeped until reaching thermal expansion and seeping the expansion that treatment process requires
It is required that；
7) power supply is closed, induction coil stops heating, opens the inner cavity that vacuum interface admits air into reaction unit, opens
Sealing cover takes out the gear workpieces of hot diffusion penetration.
Further feature is: thermocouple temperature collection data being arranged on reaction unit.
The workbench is can be rotated with inclined, and reaction vessel accordingly tilts, and the wasted powder in reaction vessel is inclined
Ramp down enters waste material feed track, reaction unit is discharged through waste material feed track, into waste material collection device.
A kind of gear surface vacuum induction heating diffusion penetration device, including ontology, the ontology include turnover close
Capping, pedestal and wall body, sealing cover is in top, pedestal in lower part, and wall body is between sealing cover and pedestal, middle cavity shape
At inner cavity；It is characterized by: intracavitary inside be provided with workbench and reaction vessel, reaction vessel is arranged on the table, wait locate
The gear workpieces of reason are arranged in reaction vessel；It is provided on the body and vacuumizes interface, vacuumize interface and be connected to inner cavity, outside
Vacuum plant is connect to extract interior intracavitary gas；Hopper corresponding with reaction vessel position protrude into it is interior intracavitary, by hot diffusion penetration
The powder raw material needed is added in inner cavity；In hopper in the following, setting filter device is to be filtered the powder that hopper enters, warp
Filter device is screened, into the reaction vessel below filter device；On wall body, induction coil, the line of induction are set
Circle connects to power supply, and after being powered up, induction coil heats after being powered.
It is provided with thermocouple on the body, for measuring the temperature of inner cavity.
It is provided with waste material collection device outside ontology, gos deep into inner cavity, waste material feed track and reaction vessel through waste material feed track
Position it is corresponding, after reaction vessel rotates or tilts, waste material feed track is poured into the wasted powder inclination in reaction vessel, is arranged
Enter in waste material collection device.
The wall body is ceramic material resistant to high temperature.
Beneficial effects of the present invention:
1., so being heated the workpiece surface of infiltration coating will not aoxidize, not taken off due to heating workpiece under vacuum conditions
Carbon, surface-brightening are high-quality.
2. power formulations can according to need adjustment, atmosphere is controllable.
3. can individually or continuous feed, contact area is big, reaction uniformly, it is high-efficient.
4. size of powder particles can be screened, coating quality is good.
5. utilizing induction heating, workpiece can be made to heat rapidly, save working hour.
Detailed description of the invention
Fig. 1 is that infiltration structure drawing of device is expanded in vacuum induction heating of the present invention.
Specific embodiment
Below with reference to the drawings and specific embodiments, the present invention is described in detail.
The present invention provides a kind of gear surface vacuum induction heat expand infiltration method, technological operation according to the following steps into
Row:
1, gear workpieces to be processed are placed on the workbench of reaction unit inner cavity, closing sealing cover makes in reaction unit
Chamber is closed, and opening is external to be vacuumized in the vacuum plant for vacuumizing interface, when the vacuum when inner cavity reaches requirement, closes
Close vacuum evacuation device.
2, powder raw material needed for diffusion penetration is entered reaction dress by the valve for opening the feed hopper being arranged on reaction unit
The inner cavity set, falls into filter device；
3, powder raw material is screened by filter device, and granularity is less than the particle of sieve granularity, if sieve mesh number is 200
Mesh, then less than the particle of 200 mesh by sieve, into the reaction vessel below filter device, greater than big of sieve mesh number
Grain, such as larger than 200 mesh are not transported to reaction vessel then, do not enter and participate in reaction in reaction vessel, defeated by pipeline as shown in the figure
It is sent in material-gathering device；
4, after powder raw material needed for diffusion penetration fully enters, power supply is connected, makes to be arranged in around reaction unit
Induction coil heats after being powered, and gear workpieces surface temperature is made to meet thermal expansion cementation process requirement, carries out the thermal expansion of gear workpieces surface
Seep processing reaction；Acid extraction etc. is controlled by the temperature data that the thermocouple being arranged on reaction unit acquires
System；
5, after the hot diffusion penetration of gear surface, which reaches technique, to be required, stop hot diffusion penetration；Pass through rotational response device
Wasted powder inclination in reaction vessel is poured into waste material feed track, reaction unit is discharged through waste material feed track by interior workbench,
Into in waste material collection device；Suction unit can be set in waste material collection device, waste material is sucked through waste material feed track and is collected
In device.
6, the step of repeating aforementioned (2)-(5) seeps thickness and element point until reaching thermal expansion and seeping the expansion that treatment process requires
Cloth requirement.
7, power supply is closed, induction coil stops heating, opens the inner cavity that vacuum interface admits air into reaction unit, opens
Sealing cover takes out the gear workpieces of hot diffusion penetration.
Thermal expansion seep treatment process, it may be necessary to more than one powder raw material, hot diffusion penetration can be carried out respectively, can also
To require the inner cavity for being added to by feed hopper reaction unit after mixing according to technique, two kinds or more of powder raw material and meanwhile into
The hot diffusion penetration of row.
As shown in Figure 1, processing unit, including ontology 20 are seeped in thermal expansion of the invention, being formed in ontology 20 can be closed
Inner cavity 21, the ontology 20 include turnover sealing cover 1, pedestal 10 and wall body 14, and wall body 14 is preferably resistant to high temperature
Ceramic material, for sealing cover 1 in top, pedestal 10 in lower part, wall body 14 is intermediate empty between sealing cover 1 and pedestal 10
Chamber forms inner cavity 21, and the sealing cover 1 for overturning top can open inner cavity 21；It is provided with workbench 9 in inner cavity 21 and reaction is held
Device 8, reaction vessel 8 are arranged on workbench 9, and gear workpieces to be processed are arranged in reaction vessel 8；It is arranged on ontology 20
Interface 2 is vacuumized, interface 2 is vacuumized and is connected to inner cavity 21, external vacuum plant reaches and wants to extract the gas in inner cavity 21
The vacuum degree asked.Thermocouple 3 is provided on ontology 20, thermocouple 3 is used to measure the temperature of inner cavity 21, grasps inner cavity to facilitate
21 temperature；If it is the higher operation of the degree of automation, also by the temperature signal input control device of thermocouple 3 to control automatically
Heat diffusion penetration process；Hopper 4 corresponding with 8 position of reaction vessel, which protrudes into inner cavity 21, (to be passed through sealing cover 1 and protrudes into figure
In inner cavity 21), the powder raw material that hot diffusion penetration is needed is added in inner cavity 21, the second hopper 5 can also be set, respectively into
Material；In hopper 4 in the following, i.e. between hopper 4 and reaction vessel 8, filter device 6 is arranged to enter hopper 4 or the second hopper 5
Powder is filtered, and powder raw material is screened by filter device 6, and granularity is less than the particle of sieve granularity, such as sieve mesh number
Into in the reaction vessel 8 below filter device 6, it is greater than sieve mesh number then less than the particle of 200 mesh by sieve for 200 mesh
Bulky grain, such as larger than 200 mesh are not transported to reaction vessel 8 then, do not enter and participate in reaction in reaction vessel 8, as shown in the figure logical
Piping is transported in the material-gathering device 11 being arranged outside ontology 20；Filter device 6 is arranged in inner cavity 21 by fixed plate 7.?
On wall body 14, the periphery setting induction coil 15 on wall body 14, induction coil 15 are connected to power supply, are being connect as shown in the figure
Behind energization source, induction coil 15 heats after being powered, and heater body 20 makes the gear workpieces to be processed being arranged in reaction vessel 8
And powder raw material is heated, and carries out hot diffusion penetration.
It is provided with waste material collection device 12 outside ontology 20, gos deep into inner cavity 21 through waste material feed track, waste material feed track and anti-
It answers the position of container 8 corresponding, after reaction vessel 8 rotates or tilts, waste material is poured into the wasted powder inclination in reaction vessel 8
Feed track is discharged into waste material collection device 12.Workbench 9 is that can rotate with inclined, electric or hand, in workbench
When 9 rotations are to tilt, reaction vessel 8 is accordingly tilted, and waste material feed track is poured into the wasted powder inclination in reaction vessel 8.
On ontology 20, flexible graphite sealing ring 13 is set, to seal between sealing cover 1 and wall body 14, pedestal 10 and wall
Gap between wall body 14, makes inner cavity 21 form closed cavity, and the vacuum degree of requirement is reached when vacuumizing.
Finally, it should be noted that technical side the above examples are only used to illustrate the technical scheme of the present invention and are not limiting
Case, although applicant describes the invention in detail referring to preferred embodiment, those skilled in the art should be managed
Solution, modification or equivalent replacement of the technical solution of the present invention are made for those, without departing from the objective and range of the technical program,
It is intended to be within the scope of the claims of the invention.
Claims (3)
1. infiltration method is expanded in a kind of gear surface vacuum induction heating, it is characterised in that the following steps are included:
1) gear workpieces to be processed are placed on the workbench of reaction unit inner cavity, closing sealing cover makes reaction unit inner cavity
Closed, opening is external to be vacuumized in the vacuum plant for vacuumizing interface, when the vacuum when inner cavity reaches requirement, is closed
Vacuum evacuation device；
2) valve for opening the feed hopper being arranged on reaction unit, enters reaction unit for powder raw material needed for diffusion penetration
Inner cavity falls into filter device；
3) powder raw material is screened by filter device, and granularity is less than the particle of sieve granularity, into below filter device
In reaction vessel；Granularity is greater than the bulky grain of sieve mesh number, does not enter and participates in reaction in reaction vessel；
4) after powder raw material needed for diffusion penetration fully enters, power supply is connected, the induction being arranged in around reaction unit is made
Coil heats after being powered, and so that the raising of gear workpieces temperature is met thermal expansion cementation process requirement, carries out the reaction of surface heat diffusion penetration；
5) after the hot diffusion penetration of gear surface, which reaches technique, to be required, stop hot diffusion penetration；By the waste powder in reaction vessel
End discharge reaction unit；
6) repetition is aforementioned 2) -5) the step of, until reaching, the expansion infiltration thickness for the treatment of process requirement is seeped in thermal expansion and Elemental redistribution is wanted
It asks；
7) power supply is closed, induction coil stops heating, opens the inner cavity that vacuum interface admits air into reaction unit, opens sealing
Lid, takes out the gear workpieces of hot diffusion penetration.
2. infiltration method is expanded in a kind of gear surface vacuum induction heating according to claim 1, it is characterised in that: reacting
Thermocouple temperature collection data are set on device.
3. infiltration method is expanded in a kind of gear surface vacuum induction heating according to claim 1, it is characterised in that: the work
Platform is can be rotated with inclined, and reaction vessel accordingly tilts, and waste material feed track is poured into the wasted powder inclination in reaction vessel,
Reaction unit is discharged through waste material feed track, into waste material collection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710344002.6A CN107058941B (en) | 2017-05-16 | 2017-05-16 | Infiltration method and device are expanded in the heating of gear surface vacuum induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710344002.6A CN107058941B (en) | 2017-05-16 | 2017-05-16 | Infiltration method and device are expanded in the heating of gear surface vacuum induction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107058941A CN107058941A (en) | 2017-08-18 |
| CN107058941B true CN107058941B (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710344002.6A Active CN107058941B (en) | 2017-05-16 | 2017-05-16 | Infiltration method and device are expanded in the heating of gear surface vacuum induction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111334843B (en) * | 2020-04-26 | 2021-09-14 | 重庆理工大学 | Preparation device for metallurgical bonding coating on inner wall of metal pipe |
| CN111519130A (en) * | 2020-05-13 | 2020-08-11 | 重庆理工大学 | Chemical preparation device and method for gear surface solid lubricating coating |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1187095A (en) * | 1997-09-02 | 1999-03-30 | Fuji Electric Co Ltd | Inductively coupled plasma device |
| CN1766153A (en) * | 2005-11-07 | 2006-05-03 | 西安交通大学 | Method for quick-speed preparing carbon/carbon composite material using heat gradient chemical gas phase infiltration |
| WO2007010607A1 (en) * | 2005-07-21 | 2007-01-25 | Koyo Thermo Systems Co., Ltd. | Carburization method and carburization furnace |
| CN104372288A (en) * | 2014-11-27 | 2015-02-25 | 重庆理工大学 | Gear with high surface hardness, high wearing resistance and high tenacity and treating furnace of gear |
| CN206721351U (en) * | 2017-05-16 | 2017-12-08 | 重庆理工大学 | Vacuum induction heats diffusion penetration body of heater |
-
2017
- 2017-05-16 CN CN201710344002.6A patent/CN107058941B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1187095A (en) * | 1997-09-02 | 1999-03-30 | Fuji Electric Co Ltd | Inductively coupled plasma device |
| WO2007010607A1 (en) * | 2005-07-21 | 2007-01-25 | Koyo Thermo Systems Co., Ltd. | Carburization method and carburization furnace |
| CN1766153A (en) * | 2005-11-07 | 2006-05-03 | 西安交通大学 | Method for quick-speed preparing carbon/carbon composite material using heat gradient chemical gas phase infiltration |
| CN104372288A (en) * | 2014-11-27 | 2015-02-25 | 重庆理工大学 | Gear with high surface hardness, high wearing resistance and high tenacity and treating furnace of gear |
| CN206721351U (en) * | 2017-05-16 | 2017-12-08 | 重庆理工大学 | Vacuum induction heats diffusion penetration body of heater |
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| CN107058941A (en) | 2017-08-18 |
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