CN108315689A - A kind of TD treatment process - Google Patents
A kind of TD treatment process Download PDFInfo
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- CN108315689A CN108315689A CN201810023751.3A CN201810023751A CN108315689A CN 108315689 A CN108315689 A CN 108315689A CN 201810023751 A CN201810023751 A CN 201810023751A CN 108315689 A CN108315689 A CN 108315689A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 230000000171 quenching effect Effects 0.000 claims abstract description 32
- 238000010791 quenching Methods 0.000 claims abstract description 30
- 239000000126 substance Substances 0.000 claims abstract description 6
- 238000004458 analytical method Methods 0.000 claims abstract description 5
- 230000035484 reaction time Effects 0.000 claims abstract description 5
- 239000012159 carrier gas Substances 0.000 claims description 28
- 229910052720 vanadium Inorganic materials 0.000 claims description 28
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 26
- 229910021550 Vanadium Chloride Inorganic materials 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 18
- 230000007723 transport mechanism Effects 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 16
- 238000003763 carbonization Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- 239000011261 inert gas Substances 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- RPESBQCJGHJMTK-UHFFFAOYSA-I pentachlorovanadium Chemical compound [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[V+5] RPESBQCJGHJMTK-UHFFFAOYSA-I 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000005439 thermosphere Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 9
- 229910021538 borax Inorganic materials 0.000 abstract description 8
- 239000004328 sodium tetraborate Substances 0.000 abstract description 8
- 235000010339 sodium tetraborate Nutrition 0.000 abstract description 8
- 230000008595 infiltration Effects 0.000 abstract description 5
- 238000001764 infiltration Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 125000004429 atom Chemical group 0.000 description 16
- 239000003961 penetration enhancing agent Substances 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 7
- 238000000576 coating method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052758 niobium Inorganic materials 0.000 description 6
- 239000010955 niobium Substances 0.000 description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 239000012495 reaction gas Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/26—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions more than one element being diffused
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The present invention relates to TD method treatment process fields, refer in particular to a kind of TD treatment process comprising following steps：1, physico-chemical analysis is carried out to workpiece；2, workpiece is cleaned；3, workpiece is ground；4, the pre-heat treatment is carried out to workpiece；5, gas TD processing is carried out to workpiece；6, the reaction time is controlled；7, quenching treatment；8, temper；9, polishing treatment；10, detection and tolerance adjustment；It is serious to solve the viscous salt of workpiece that conventionally employed borax bath TD coated tapes take, difficulty is cleaned to holes or trough of belt workpiece, but also the problem of meeting heavy corrosion crucible.And TD processing unit high degree of automations, labor intensity is reduced, infiltration layer is uniform, low in the pollution of the environment.
Description
Technical field
The present invention relates to TD method treatment process fields, refer in particular to a kind of TD treatment process.
Background technology
The super technique for hardening treatment of TD die surfaces, using metal carbides diffusion coating TD (Thermal Diffusion
CarbideCoating Process) principle is that workpiece is placed in molten salt of borax and its extraordinary Jie under certain treatment temperature
In matter, chemical reaction is generated by carbon in the metallic atom and workpiece in extraordinary fused salt, nitrogen-atoms, be diffused in workpiece surface and
Form the one layer several microns metallic carbide layers to the vanadium of more than 20 microns, niobium, chromium, titanium etc..Traditional be using borax bath into
Row TD coatings, but borax bath poor fluidity, the viscous salt of workpiece is serious, and difficulty is cleaned to holes or trough of belt workpiece, and
Can also heavy corrosion crucible, cause labor intensity big, infiltration layer is uneven, pollute environment.
Invention content
The technical problem to be solved in the present invention is to provide a kind of TD treatment process, use gas TD methods, solve tradition
Using borax bath TD coated tapes come workpiece to glue salt serious, with holes or trough of belt workpiece is cleaned it is difficult, but also can be serious
The problem of corroding crucible.And TD processing unit high degree of automations, labor intensity is reduced, infiltration layer is uniform, low in the pollution of the environment.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：
A kind of TD treatment process comprising following steps：
Step (1)：To needing the workpiece for carrying out TD processing to carry out physico-chemical analysis, the material composition and performance of workpiece are determined；
Step (2)：Workpiece is cleaned, the impurity of workpiece surface is cleaned up；
Step (3)：Workpiece is ground, workpiece surface roughness≤Ra0.04 μm is made；
Step (4)：The pre-heat treatment is carried out to workpiece, workpiece is transported in the first working chamber of TD processing units after preheating
Carry out gas TD processing；
Step (5)：Vacuumize process is carried out using the first working chamber of vacuum generating device pair；Heating device pair is used simultaneously
Heating in first working chamber；Keep the temperature in the first working chamber uniform using the blowing of the first wind turbine simultaneously；
Step (6)：After pressure in first working chamber reaches setting value, using the first air delivery device into the first working chamber
Inject inert gas；
Step (7)：Vacuumize process, the temperature in the first working chamber are carried out using the first working chamber of vacuum generating device pair
After reaching setting value with pressure, vanadinizing carrier gas is injected into the first working chamber using the second air delivery device；
Step (8)：Vanadinizing carrier gas is reacted with workpiece, and carbonization vanadium layers are formed in workpiece surface；According to the needs of workpiece,
Control the reaction time of vanadinizing carrier gas and workpiece；
Step (9)：Workpiece after vanadinizing is transported to quenching unit and carries out quenching treatment；
Step (10)：Quenched workpiece is transported to tempering furnace and carries out temper；
Step (11)：Workpiece after tempering is processed by shot blasting；
Step (12)：Workpiece is detected and tolerance adjusts.
Further, the TD processing units include the reaction unit for carrying out TD processing to workpiece, to TD
Workpiece after reason carries out the quenching unit of quenching treatment；Reaction unit includes first working chamber, first working chamber with
Vacuum generating device connection, first air delivery device are connected to first working chamber, second air delivery device and
The first working chamber connection, first working chamber are communicated with for filling the exhaust of the gas discharge in the first working chamber
It sets.
Further, the reaction unit further includes the kuppe being set in the first working chamber, the outer surface of kuppe
It is attached at the side wall of the first working chamber；
The kuppe includes inner wall, outer wall and the hollow layer being set between inner wall and outer wall；Outer wall is attached at first
The side wall of working chamber, inner wall, which encloses, to be set to form third working chamber；Kuppe offers several through-holes, and through-hole is connected to hollow layer and the
Three working chambers.
Further, the hollow layer is provided with the first wind turbine and the first motor for driving the first wind turbine to rotate.
Further, the heating device includes the heating layer for being set to kuppe, and heating layer is located at water conservancy diversion cover outer surface
Between the side wall of the first working chamber.
Further, the reaction unit further includes the insulating layer for being set to heating layer outer surface, and insulating layer is located at heating
Between layer and the side wall of the first working chamber.
Further, the quenching unit includes the second working chamber, the feed mechanism being set in the second working chamber；It is described
Second working chamber is separated into aircooling cabinet and oil cooling room by feed mechanism；The oil cooling room is located at below aircooling cabinet；
The second wind turbine and use for carrying out air-blast quenching processing to TD treated workpiece are provided in the aircooling cabinet
In the second motor for driving the rotation of the second wind turbine；
It is provided with agitating device and heater in the oil cooling room；The agitating device is intervally installed with heater.
Further, the feed mechanism includes horizontal transport mechanism and vertical transport mechanism；
The horizontal transport mechanism includes feeding fork truck and the first drive component for driving feeding fork truck to move；
The vertical transport mechanism includes the telescopic rod for driving horizontal transport mechanism to move, for driving telescopic rod to stretch
Second drive component of contracting.
Further, the vanadinizing carrier gas of the step (7) includes vanadium chloride (VCL4) and hydrogen (H2)；Vanadium chloride
(VCL4) and the flow-rate ratio of hydrogen (H2) is 1L/H：2.5L/H.
Further, the pressure in the first working chamber of the step (7) is 10pa to 0.126Mpa, and temperature is 1000 DEG C
To 1200 DEG C.
Beneficial effects of the present invention：It uses gas TD methods, and metal works are put into inside TD processing units, and at TD
The gas medium of the injection atom of penetration enhancer containing vanadium or the atom of penetration enhancer containing niobium in device is managed, the reaction condition of TD processing units is adjusted, makes
The atom of penetration enhancer containing vanadium or the atom of penetration enhancer containing niobium are in surface of workpiece coating.Solve conventionally employed borax bath TD coated tapes
Workpiece to glue salt serious, with holes or trough of belt workpiece is cleaned it is difficult, but also can heavy corrosion crucible the problem of.And at TD
It is high to manage plant automation degree, reduces labor intensity, infiltration layer is uniform, low in the pollution of the environment.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Reference sign：
Reaction unit 1, quenching unit 2, vacuum generating device 3, the first air delivery device 4, the second air delivery device 5, exhaust dress
Set 6, the first working chamber 10, kuppe 11, heating device 12, heating layer 121, insulating layer 13, the first wind turbine 14, first motor
15, the second working chamber 20, locking door 21, cylinder 22, feed mechanism 23, aircooling cabinet 24, oil cooling room 25, inert gas tank 41, the
One air extractor 42, metallic carrier gas tank 51, the second air extractor 52, air collector 61, third air extractor 62, inner wall 111,
Outer wall 112, hollow layer 113, third working chamber 114, through-hole 115, horizontal transport mechanism 231, vertical transport mechanism 232, feeding
Fork truck 233, the first drive component 234, telescopic rod 235, the second drive component 236, the second wind turbine 241, the second motor 242 stir
Mix device 251, heater 252.
Specific implementation mode
For the ease of the understanding of those skilled in the art, the present invention is made further with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
TD processing refers to using metal carbides diffusion coating TD (Thermal Diffusion Carbide Coating
Process) principle is that workpiece is placed in molten salt of borax and its Special Medium under certain treatment temperature, molten by special type
The carbon in metallic atom and workpiece, nitrogen-atoms in salt generate chemical reaction, are diffused in workpiece surface and form one layer several microns
To the metallic carbide layer of the vanadium of more than 20 microns, niobium, chromium, titanium etc..
As shown in Figure 1, a kind of TD treatment process of the present invention, includes the following steps：
Step (1)：Physico-chemical analysis is carried out to the workpiece for needing progress TD processing, determines the material composition and performance of workpiece,
The reaction condition and which kind of quenching mode is selected to get ready that it is needed are adjusted for subsequent TD processing；
Step (2)：Workpiece is cleaned, the impurity of workpiece surface is cleaned up, prevents the carbonization of the workpiece after TD
Vanadium layers fall off；
Step (3)：Workpiece is ground, makes workpiece surface roughness≤Ra0.04 μm, is on the one hand to grind away workpiece
The oxidation film on surface makes vanadinizing carrier gas react more abundant with workpiece, and work can be evenly distributed in by being on the other hand carbonization vanadium layers
Part surface is to ensure the quality of workpiece surface；
Step (4)：The pre-heat treatment is carried out to workpiece, workpiece is transported to the first working chamber 10 of TD processing units after preheating
Interior progress gas TD processing, it is when workpiece enters TD processing units in order to prevent because difference variation is big to carry out the pre-heat treatment to workpiece
And thermal deformation is caused, it lays a good foundation to form good carbonization vanadium layers in workpiece surface；
Step (5)：Vacuumize process is carried out to the first working chamber 10 using vacuum generating device 3；Simultaneously using heating dress
Set heating in 12 pair of first working chamber 10；Keep the temperature in the first working chamber 10 uniform using the blowing of the first wind turbine 14 simultaneously；TD
Processing carries out under vacuum conditions, without the intervention of oxygen in air, carbonization vanadium layers is made not generate dark structure, to carry
The performance of height carbonization vanadium layers；TD processing carries out at high temperature, enhances the activity of reaction of atomic, accelerates the diffusion of reaction of atomic
Speed efficiently forms carbonization vanadium layers in workpiece surface；Under the action of the first wind turbine 14 and kuppe 11, avoid first
Regional area forms turbulent flow in working chamber 10, and workpiece surface is made to form uniform carbonization vanadium layers；
Step (6)：After pressure in first working chamber 10 reaches setting value, worked to first using the first air delivery device 4
Inert gas is injected in chamber 10；Injecting inert gas is to remove the oxygen in the first working chamber 10, it is ensured that workpiece is in anaerobic
In the state of carry out TD processing so that carbonization vanadium layers is not generated dark structure without the intervention of oxygen in air, to improve
The performance for the vanadium layers that are carbonized；Specifically, inert gas is nitrogen；
Step (7)：Vacuumize process is carried out to the first working chamber 10 using vacuum generating device 3, in the first working chamber 10
After temperature and pressure reach setting value, vanadinizing carrier gas is injected into the first working chamber 10 using the second air delivery device 5；Vanadinizing
Carrier gas includes vanadium chloride (VCL4) and hydrogen (H2), and the chemical formula that vanadinizing carrier gas is reacted with workpiece is as follows：(1)VCL4
+ 2H2=V+4HCL；(2) VCL4+2Fe=V+2FeCL2；Both reactions are carried out at the same time in the first working chamber 10, first
Reaction is that VCL4 is reacted with H2, and the V atoms of generation are covered in the surface formation carbonization vanadium layers of workpiece；Second reaction be VCL4 with
Displacement reaction occurs for the Fe of workpiece, and V atoms form carbonization vanadium layers in workpiece surface.Both chemical reactions are carried out at the same time, and are accelerated
The efficiency of carbonization vanadium layers is formed in workpiece surface.
Step (8)：Vanadinizing carrier gas is reacted with workpiece, and carbonization vanadium layers are formed in workpiece surface；According to the needs of workpiece,
Control the reaction time of vanadinizing carrier gas and workpiece；The vanadium layers that are carbonized are 0.8-2 μm/min in the deposition rate of workpiece, according to need
The thickness that carbonization vanadium layers are plated in workpiece surface, controls the reaction time of vanadinizing carrier gas and workpiece, deposition rate and first
Temperature and pressure in working chamber is proportional；
Step (9)：Workpiece after vanadinizing is transported to quenching unit 2 and carries out quenching treatment；Quenching unit 2 is equipped with aircooling cabinet
24 and oil cooling room 25, determine that the workpiece after vanadinizing is to carry out air-blast quenching or oil cooling according to the physico-chemical analysis result of step (1)
Quenching, to improve the hardness and wearability of workpiece；
Step (10)：Quenched workpiece is transported to tempering furnace and carries out temper, improves the hardness of workpiece；
Step (11)：Workpiece after tempering is processed by shot blasting, remove HCL drops, and make workpiece surface light and
It is smooth；
Step (12)：Workpiece is detected and tolerance adjusts, meets the requirement of client, then consigns to client.
The TD treatment process of the present invention, uses gas TD methods, and metal works are put into inside TD processing units, and to TD
Then the gas medium of the injection atom of penetration enhancer containing vanadium or the atom of penetration enhancer containing niobium in processing unit adjusts the reaction item of TD processing units
Part makes the atom of penetration enhancer containing vanadium or the atom of penetration enhancer containing niobium in surface of workpiece coating.It solves conventionally employed borax bath TD to cover
The problem of viscous salt of workpiece that layer is brought is serious, difficult to the cleaning of with holes or trough of belt workpiece, heavy corrosion crucible.And TD processing
Plant automation degree is high, reduces labor intensity, infiltration layer is uniform, low in the pollution of the environment.
As shown in Figure 1, in the present embodiment, the TD processing units include the reaction unit for carrying out TD processing to workpiece
1, the quenching unit 2 for carrying out quenching treatment to TD treated workpiece；Reaction unit 1 includes first working chamber 10,
First working chamber 10 is connected to the vacuum generating device 3, and first air delivery device 4 connects with first working chamber 10
Logical, second air delivery device 5 is connected to first working chamber 10, and first working chamber 10 is communicated with for by the first work
Make the exhaust apparatus 6 of the gas discharge in chamber 10.
In actual work, workpiece is sent into the material platform of the first working chamber 10 by feed mechanism 23, is then shut off locking door 21, this
When the first working chamber 10 formed a closed space.Vacuum generating device 3 works, and is vacuumized to the first working chamber 10
Processing, when the pressure in the first working chamber 10 reaches setting value, vacuum generating device 3 is stopped.Then the first gas transmission fills
It sets 4 work and is filled with inert gas to the first working chamber 10, device for simultaneous heating 12 heats the first working chamber 10.Work as pressure
When reaching setting value with temperature, the work of the second air delivery device 5 is filled with the carrier gas containing metallic atom to the first working chamber 10
Body, in the environment of high temperature and pressure, metallic atom is chemically reacted with workpiece, and metal-carbide layer is formed in workpiece surface.TD
After the completion of processing, exhaust apparatus 6 works, and the reaction gas in the first working chamber 10 is discharged to 61 the inside of collecting tank.Exhaust is completed
Locking door 21 is opened afterwards, and treated that workpiece takes out is sent to quenching unit 2 and carries out quenching treatment by TD for feed mechanism 23.Vacuum
Generating means 3, the first air delivery device 4, the second air delivery device 5 and exhaust apparatus 6 are electrically connected with PLC, are realized by PLC automatic
Change control.
Specifically, first air delivery device 4 includes the inert gas tank 41 being set to outside the first working chamber 10, connection is lazy
First air extractor 42 of property gas tank 41 and the first working chamber 10；Second air delivery device 5 includes being set to the first work
Metallic carrier gas tank 51 outside chamber 10 is connected to the second air extractor 52 of metallic carrier gas tank 51 and the first working chamber 10；
The exhaust apparatus 6 includes being set to air collector 61 outside the first working chamber 10, is connected to air collector 61 and the first working chamber 10
Third air extractor 62.
In actual work, when needing to be filled with inert gas to the first working chamber 10, the work of the first air extractor 42 will be lazy
The inert gas of property gas tank 41 is filled with via conduit in the first working chamber 10.When needs are filled with to the first working chamber 10 containing gold
When belonging to the carrier gas of atom, the second air extractor 52 work, by the carrier containing metallic atom of metallic carrier gas tank 51
Gas is filled with via conduit in the first working chamber 10.When needing that the gas in the first working chamber 10 is exhausted, third is taken out
Device of air 62 works, and the gas in the first working chamber 10 is transported to air collector 61.First air delivery device 4, the second gas transmission
Device 5 and exhaust apparatus 6 are simple in structure, and manufacturing cost and maintenance cost are low.
Specifically, being provided with the locking door 21 of the feeding mouth for closing the first working chamber 10 in second working chamber 20
And the cylinder 22 for driving locking door 21 to open and close.
In actual work, when feed mechanism 23 is to when 10 feeding of the first working chamber or feeding, cylinder 22 drives locking door 21
It opens；When carrying out TD processing to workpiece, cylinder 22 will lock locking door 21.It uses cylinder 22 and is used as driving device, no
Only operation principle is simple, and coupling mechanism force is very big.
As shown in Figure 1, in the present embodiment, the reaction unit 1 further includes the kuppe being set in the first working chamber 10
11, the outer surface of kuppe 11 is attached at the side wall of the first working chamber 10.The kuppe 11 include inner wall 111, outer wall 112 and
The hollow layer 113 being set between inner wall 111 and outer wall 112；Outer wall 112 is attached at the side wall of the first working chamber 10, inner wall 111
It encloses and sets to form third working chamber 114；Kuppe 11 offers several through-holes 115, and through-hole 115 is connected to hollow layer 113 and third
Working chamber 114.The hollow layer 113 is provided with the first wind turbine 14 and the first motor 15 for driving the first wind turbine 14 to rotate.
When carrying out TD processing to workpiece, kuppe 11 carries out water conservancy diversion to reaction gas, and reaction gas is made equably to blow to
Workpiece avoids the regional area in the first working chamber 10 from forming turbulent flow, to make workpiece surface form uniform metal-carbide layer.
And kuppe 11 plays certain insulation effect.Specifically, workpiece is placed to third working chamber 114, first motor 15 drives
First wind turbine 14 rotates, and the wind that the first wind turbine 14 generates equably blows to workpiece, reaction gas through hollow layer 113 and through-hole 115
Workpiece is equably blowed to also with this wind direction, to make workpiece surface form uniform metal-carbide layer, 112 thermal conductivity of outer wall
Can be poor, to playing certain insulation effect in kuppe 11.
As shown in Figure 1, in the present embodiment, the heating device 12 includes the heating layer 121 for being set to kuppe 11, heating
Layer 121 is between 11 outer surface of kuppe and the side wall of the first working chamber 10.
When carrying out TD processing to workpiece, the temperature in kuppe 11 is increased by heating layer 121, meets and workpiece is carried out
The condition of TD processing.The heating layer 121 is electrically connected with PLC, and controlling heating layer 121 by PLC is adjusted in the first working chamber 10
Temperature.
As shown in Figure 1, in the present embodiment, the reaction unit 1 further includes the insulating layer for being set to 121 outer surface of heating layer
13, insulating layer 13 is located between heating layer 121 and the side wall of the first working chamber 10.
121 outer surface of heating layer is provided with insulating layer 13, good insulation effect is played to the first working chamber 10, reduces
The number of the task again of heating layer 121, economizes on resources, reduces cost.
As shown in Figure 1, in the present embodiment, the quenching unit 2 includes the second working chamber 20, is set to the second working chamber 20
Interior feed mechanism 23；Second working chamber 20 is separated into aircooling cabinet 24 and oil cooling room 25 by the feed mechanism 23；The oil cooling
Room 25 is located at 24 lower section of aircooling cabinet；It is provided in the aircooling cabinet 24 for carrying out air-blast quenching processing to TD treated workpiece
The second wind turbine 241 and for drive the second wind turbine 241 rotate the second motor 242；The oil cooling room 25 is provided with stirring dress
Set 251 and heater 252；The agitating device 251 is intervally installed with heater 252.
The feed mechanism 23 includes horizontal transport mechanism 231 and vertical transport mechanism 232；The horizontal transport mechanism
231 include feeding fork truck 233 and the first drive component 234 for driving feeding fork truck 233 to move；The vertical transport mechanism
232 include the telescopic rod 235 for driving horizontal transport mechanism 231 to move, the second driving for driving telescopic rod 235 flexible
Component 236.
After workpiece TD processing, workpiece is taken out and is sent to the second working chamber 20 by feed mechanism 23, according to the material of workpiece
Different selections be to carry out air-blast quenching in aircooling cabinet 24 or carry out oil quenchinng in oil cooling room 25.Specifically, when workpiece needs
When wanting air-blast quenching, the first drive component 234 work, driving feeding fork truck 233 moves forward, after reaching workpiece lower end, first
Drive component 234 is stopped, and then the second drive component 236 works, and driving telescopic rod 235 is toward certain distance is risen, at this time
Feeding fork truck 233 will lift workpiece.Then task, driving feeding fork truck 233 move the first drive component 234 backward again
It is dynamic, take workpiece to aircooling cabinet 24, at this moment the second motor 242 works, and rotates the second wind turbine 241, the wind that the second wind turbine 241 generates
Air-blast quenching is carried out to workpiece.
When workpiece needs oil quenchinng, the first drive component 234 work, driving feeding fork truck 233 moves forward, and reaches
Behind workpiece lower end, the first drive component 234 is stopped, and then the second drive component 236 works, and driving telescopic rod 235 is up
Certain distance is risen, feeding fork truck 233 will lift workpiece at this time.Then the first drive component 234 task again drives feeding
Fork truck 233 moves backward, takes workpiece to aircooling cabinet 24, and then the 4th motor works, and driving telescopic rod 235 is toward declining, simultaneously
Telescopic rod 235 drives horizontal transport mechanism 231 connected to it whole toward declining, and oil is carried out until workpiece is completely submerged in oil
Cold quenching.Before workpiece carries out oil quenchinng, heater 252 first heats the oil in oil cooling room 25, makes the temperature of oil
60 degrees Celsius to 80 degrees Celsius are reached, such oil temperature is more preferable to the quenching effect of workpiece.It is set in oil cooling room 25 simultaneously
It is equipped with agitating device 251, keeps the temperature of the oil in oil cooling room 25 uniform, keeps the quenching effect of workpiece more preferable.
As shown in Figure 1, in the present embodiment, the vanadinizing carrier gas of the step (7) includes vanadium chloride (VCL4) and hydrogen
(H2)；The flow-rate ratio of vanadium chloride (VCL4) and hydrogen (H2) is 1L/H：2.5L/H.When vanadinizing carrier gas is reacted with workpiece, chlorine
The flow-rate ratio for changing vanadium (VCL4) and hydrogen (H2) is 1L/H：2.5L/H, vanadinizing carrier gas and workpiece are anti-under this flow-rate ratio
Should be efficient, the gas not reacted with workpiece in the first working chamber 10 is reduced, waste is reduced, reduces cost.
As shown in Figure 1, in the present embodiment, the pressure in the first working chamber 10 of the step (7) be 10pa extremely
0.126Mpa, temperature are 1000 DEG C to 1200 DEG C.
Vanadinizing carrier gas reaction effect under the pressure of 10pa to 0.126Mpa is good, deposition of the vanadium atom in workpiece surface
Rate is fast, and metal period diffusion time is reasonable.If the pressure in the first working chamber 10 is less than 10pa, vanadium atom can be made in workpiece
Surface enrichment degree reduces, and extends the period of metal thermal diffusion, cost is caused to increase；If the pressure in the first working chamber 10 is higher than
When 0.126Mpa, the cost of manufacture TD processing units can be increased.
Vanadinizing carrier gas reaction effect at a temperature of 1000 DEG C to 1200 DEG C is good, and vanadium carbide layer thickness increases, and can contract
The time that short vanadinizing carrier gas is reacted with workpiece, vanadium atom are fast in the deposition rate of workpiece surface.If in the first working chamber 10
Temperature be less than 1000 DEG C when, the period that vanadinizing carrier gas is reacted with workpiece is long, deposition rate of the vanadium atom in workpiece surface
It is low, it is unfavorable for workpiece high-volume and carries out TD processing；If the temperature in the first working chamber 10 is higher than 1200 DEG C, manufacture TD can be increased
The cost of processing unit, temperature is excessively high also to make the device job insecurity in the first working chamber 10 or damage.
All technical characteristics in the present embodiment can be freely combined according to actual needs.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other manner,
Do not depart from the technical program design under the premise of it is any it is obvious replacement within protection scope of the present invention.
Claims (10)
1. a kind of TD treatment process, it is characterised in that：Include the following steps：
Step (1)：To needing the workpiece for carrying out TD processing to carry out physico-chemical analysis, the material composition and performance of workpiece are determined；
Step (2)：Workpiece is cleaned, the impurity of workpiece surface is cleaned up；
Step (3)：Workpiece is ground, workpiece surface roughness≤Ra0.04 μm is made；
Step (4)：The pre-heat treatment is carried out to workpiece, workpiece is transported in the first working chamber of TD processing units after preheating and is carried out
Gas TD processing；
Step (5)：Vacuumize process is carried out using the first working chamber of vacuum generating device pair；Heating device pair first is used simultaneously
Heating in working chamber；Keep the temperature in the first working chamber uniform using the blowing of the first wind turbine simultaneously；
Step (6)：After pressure in first working chamber reaches setting value, injected into the first working chamber using the first air delivery device
Inert gas；
Step (7)：Vacuumize process, temperature and pressure in the first working chamber are carried out using the first working chamber of vacuum generating device pair
After reaching setting value by force, vanadinizing carrier gas is injected into the first working chamber using the second air delivery device；
Step (8)：Vanadinizing carrier gas is reacted with workpiece, and carbonization vanadium layers are formed in workpiece surface；According to the needs of workpiece, control
The reaction time of vanadinizing carrier gas and workpiece；
Step (9)：Workpiece after vanadinizing is transported to quenching unit and carries out quenching treatment；
Step (10)：Quenched workpiece is transported to tempering furnace and carries out temper；
Step (11)：Workpiece after tempering is processed by shot blasting；
Step (12)：Workpiece is detected and tolerance adjusts.
2. a kind of TD treatment process according to claim 1, it is characterised in that：The TD processing units include for work
Part carries out the reaction unit of TD processing, the quenching unit for carrying out quenching treatment to TD treated workpiece；Reaction unit packet
Include first working chamber, first working chamber is connected to the vacuum generating device, first air delivery device with it is described
First working chamber is connected to, and second air delivery device is connected to first working chamber, and first working chamber, which is communicated with, to be used for
By the exhaust apparatus of the gas discharge in the first working chamber.
3. a kind of TD treatment process according to claim 2, it is characterised in that：The reaction unit further includes being set to
Kuppe in one working chamber, the outer surface of kuppe are attached at the side wall of the first working chamber；
The kuppe includes inner wall, outer wall and the hollow layer being set between inner wall and outer wall；Outer wall is attached at the first work
The side wall of chamber, inner wall, which encloses, to be set to form third working chamber；Kuppe offers several through-holes, and through-hole is connected to hollow layer and third work
Make chamber.
4. a kind of TD treatment process according to claim 3, it is characterised in that：The hollow layer be provided with the first wind turbine and
First motor for driving the first wind turbine to rotate.
5. a kind of TD treatment process according to claim 3, it is characterised in that：The heating device includes being set to water conservancy diversion
The heating layer of cover, heating layer is between water conservancy diversion cover outer surface and the side wall of the first working chamber.
6. a kind of TD treatment process according to claim 5, it is characterised in that：The reaction unit further includes being set to add
The insulating layer of thermosphere outer surface, insulating layer is between heating layer and the side wall of the first working chamber.
7. a kind of TD treatment process according to claim 2, it is characterised in that：The quenching unit includes the second work
Chamber, the feed mechanism being set in the second working chamber；Second working chamber is separated into aircooling cabinet and oil cooling room by the feed mechanism；
The oil cooling room is located at below aircooling cabinet；
It is provided in the aircooling cabinet for carrying out the second wind turbine of air-blast quenching processing to TD treated workpiece and for driving
Second motor of dynamic second wind turbine rotation；
It is provided with agitating device and heater in the oil cooling room；The agitating device is intervally installed with heater.
8. a kind of TD treatment process according to claim 7, it is characterised in that：The feed mechanism includes horizontal transport machine
Structure and vertical transport mechanism；
The horizontal transport mechanism includes feeding fork truck and the first drive component for driving feeding fork truck to move；
The vertical transport mechanism includes the telescopic rod for driving horizontal transport mechanism to move, for driving telescopic rod to stretch
Second drive component.
9. a kind of TD treatment process according to claim 1, it is characterised in that：The vanadinizing carrier gas of the step (7)
Including vanadium chloride (VCL4) and hydrogen (H2)；The flow-rate ratio of vanadium chloride (VCL4) and hydrogen (H2) is 1L/H：2.5L/H.
10. a kind of TD treatment process according to claim 1, it is characterised in that：In first working chamber of the step (7)
Pressure be 10pa to 0.126Mpa, temperature be 1000 DEG C to 1200 DEG C.
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| CN109852923A (en) * | 2019-04-11 | 2019-06-07 | 华能国际电力股份有限公司 | The preparation facilities and method of a kind of boiler header and tube socket inner wall antioxidant coating |
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| CN112176278A (en) * | 2019-07-05 | 2021-01-05 | 天津欧亚西斯金属制品有限公司 | Surface treatment technology for TD-H superhard die |
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| CN108315689B (en) | 2024-04-19 |
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