CN109468577A - A kind of annular element carburizing quenching process - Google Patents
A kind of annular element carburizing quenching process Download PDFInfo
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- CN109468577A CN109468577A CN201811525911.0A CN201811525911A CN109468577A CN 109468577 A CN109468577 A CN 109468577A CN 201811525911 A CN201811525911 A CN 201811525911A CN 109468577 A CN109468577 A CN 109468577A
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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
- C23C8/08—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 only one element being applied
- C23C8/20—Carburising
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- 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
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The present invention relates to Field of Heat-treatment more particularly to a kind of annular element carburizing quenching process；The technique includes the following steps: to put into annular element into soaking and washing in the service sink added with aqueous cleaning agent, annular element is rinsed well with clear water afterwards, to remove annular element surface impurity and greasy dirt, it will classify after annular element drying after cleaning, the demanding annular element of carburizing is put on the material bar in annular element carburizer, low annular element is required to be placed on blowing bar carburizing, the space in annular element carburizer can be made full use of, improve carburizing efficiency, it is heated up to annular element with carburizer, start to be passed through gas penetration enhancer methanol after being warming up to suitable temperature；The present invention guarantees annular element case-carbonizing depth and surface hardness by carbon potential in change furnace body and temperature, is carried out continuously to ring-shaped work pieces carburizing and quenching, so as to shorten process flow, reduces the cost of transhipment and heat treatment, improve production efficiency.
Description
Technical field
The present invention relates to Field of Heat-treatment more particularly to a kind of annular element carburizing quenching process.
Background technique
Carburizing and quenching is a kind of common heat treatment process of metal material, it can be such that the workpiece surface for seeping carbon obtains very
High hardness improves its rub proofness.Traditional handicraft mainly has: lonneal, primary heating quenching, is seeped at pre-cooling direct quenching
The processes such as induction heating after carbon high-temp tempering, secondary quenching cold treatment, carburizing.
Also occurs carburizer technical solution in the prior art, such as application No. is 201520330610 Chinese patents
Disclose a kind of carburizer, including main furnace body, further include the sealing cover for being set to the upper end of the main furnace body, be set to it is described close
The driving device of the upper end of envelope, the inner cylinder being arranged in along the axial direction of the main furnace body in the main furnace body, along the inner cylinder
Axial direction be arranged in the inner cylinder feed device, be embedded in the side wall of the inner cylinder heating part, be set to it is described
The bottom of main furnace body and the conveying gas components being connected to the inner cylinder, be embedded in the sealing cover and and the inner cylinder in
The charging nozzle of chamber connection and the controller being embedded in the side wall of the main furnace body；The feed device includes transmission chain, sets
It is placed in the fixed frame of the end of the transmission chain, the mounting fixing parts being embedded in the transmission chain, is arranged in the installation admittedly
Determine the goods charging bucket in part and is set to the connector of one end far from the fixed frame of the goods charging bucket.
The technical solution drives feed device movement by driving device so that workpiece in feed device move up and down with
Gas penetration enhancer comes into full contact with, and realizes the purpose to workpiece carbonization, easy to operate, easy to adjust.But when to workpiece carbonization by
It is stacked upon in workpiece, the local carburizing effect that workpiece contacts with each other is bad, so that workpiece surface carburizing is uneven, and seeps
Carbon and quenching, which cannot be carried out continuously, increases production cost.
Summary of the invention
In order to make up for the deficiencies of the prior art, a kind of annular element carburizing quenching process proposed by the present invention, it is of the invention
Purpose is to guarantee that annular element case-carbonizing depth and surface hardness, carburizing and quenching are carried out continuously, subtract for annular element
Few cost, improves production efficiency.
The technical solution adopted by the present invention to solve the technical problems is: a kind of annular element carburizing of the present invention is quenched
Fire process, the technique include the following steps:
S1: putting into soaking and washing in service sink added with aqueous cleaning agent for annular element, after with clear water by annular element
It rinses well, to remove annular element surface impurity and greasy dirt, by annular element surface impurity and cleaning oil pollution completely to guarantee
Annular element carburizing precision；
S2: classify after the annular element drying after being cleaned in S1, the demanding annular element of carburizing is put into ring-type
On material bar in part carburizer, requires low annular element to be placed on blowing bar carburizing, ring-type can be made full use of
Space in part carburizer improves carburizing efficiency, is heated up to annular element with carburizer, after being warming up to suitable temperature
Start to be passed through gas penetration enhancer methanol, continue to be warming up to certain temperature, keeping carbon potential is 0.85%, and keeps the temperature 30 minutes；Gas seeps
Agent methanol decomposites active atoms of carbon and penetrates into annular element surface layer after being heated, when carbon potential is lower, in annular element carburizer
Temperature is lower, not will lead to annular element decarburization；
S3: continuing to be passed through gas penetration enhancer propane after the completion of S2, and annular element is risen to the carbon potential in carburizer
1.10%, keep temperature-resistant and holding 130 minutes in annular element carburizer；It is passed through propane and improves the concentration of carbon in turn
Improve carbon potential in annular element carburizer, it is ensured that annular element carburized (case) depth is within the scope of 0.7 to 1.0mm；
S4: reducing the amount for being passed through gas penetration enhancer methane and propane after the completion of S3, and annular element annular element is seeped
Carbon potential is down to 0.75% in carbon furnace, keeps furnace temperature constant, and temperature fluctuation range control is at ± 0.2 DEG C in annular element carburizer
In range, soaking time is 200 minutes；Concentration by reducing carbon reduces carbon potential, avoids annular work piece because of carbonization concentration
Surface hardness caused by higher is overproof, guarantees also to can guarantee annular element surface hardness while carburized (case) depth；
S5: after the completion of S4, quenching cooling is carried out to annular workpieces.Annular element after carburizing is quenched,
Annular element surface generates compression internal stress, advantageous to the fatigue strength for improving annular element；
Annular element carburizer in described S2, S3 and S4, including furnace body, motor, transmission shaft and hermatic door；The electricity
Machine is connected in furnace body top middle position；The transmission shaft is rotatably connected on furnace body top, and the upper end of transmission shaft is connected in motor
Axis on, the lower end of transmission shaft is hinged among the first annulus by link block；First annulus is located in furnace body, the first circle
It is socketed with change on the left of ring, is socketed with ring gear on the right side of the first annulus, the first annulus is arranged right below the second annulus and described second
Annulus is located in furnace body；Second annulus and the first circular ring structure are the same, are socketed with ring gear, the second annulus on the left of the second annulus
Right side is socketed with change, is fixed with connecting rod between the change being socketed on the second annulus and the change being socketed on the first annulus；Two
Fixed block is equipped with below the ring gear；Two fixed blocks are respectively fixedly connected left in the first annulus bottom right side and the second annulus
Side bottom；Tension spring is equipped between the transmission shaft and the fixed block of top；It is equipped with and draws between the connecting rod and the fixed block of lower section
Spring；Connection fixing block is fixed on second annulus；Hinge column is fixed on the connection fixing block；The hinge column lower end
It is hinged with pull rod；The pull rod quantity is two, and the pull rod lower end of top and pull rod one end of lower section are hinged, lower section
The pull rod other end is hinged on hinge column, and the hinge column of lower section is rotatably connected on bottom of furnace body by switch block；Described in two
The pull rod place of being hinged be fixed with steel ball, reset spring is equipped between two pull rods；Air inlet is equipped in the middle part of the furnace body lower end
Pipe and exhaust pipe；Bottom of furnace body is run through in described air inlet pipe one end, and the air inlet pipe other end is equipped with air intake pump；Described exhaust pipe one end is passed through
Bottom of furnace body is worn, the exhaust pipe other end is equipped with exhaust pump；The sidewall of the furnace body is equipped with multiple heat blocks；The heat block is used for
It heats up to furnace body.When work, hermatic door is opened, the annular element to carburizing is put into, hermatic door is closed after putting well, opens heat block
Start to heat furnace body, furnace body is heated to gas penetration enhancer is passed through furnace body by air inlet pipe with air intake pump after suitable temperature
It is interior, keep temperature for a period of time, while starting motor, motor drives transmission shaft rotation, first circle hinged with transmission shaft lower end
Ring is rotated with transmission shaft, and when the first annulus rotates, the second annulus connected by connecting rod is with rotation, so that with second
The hinged pull rod rotation of annulus, the connected steel ball rotation of tie rod end, steel ball are subject to centrifugal forces when rotating into furnace body
The angle that wall whipping opens two pull rods being hinged becomes smaller, to pull the second annulus to move down, due to first
Vertical range between annulus and the second annulus increases so that link rotatable certain angle, the change being connected with connecting rod is with connecting rod
It turns an angle, the tension spring stress being connected on connected tension spring and transmission shaft among connecting rod can also stretch；When motor turns
When speed becomes smaller or stops, the centrifugal force that steel ball is subject to reduces therewith, and two pull rods being hinged are under the action of reset spring
Greater angle is opened, to make the vertical range between the second annulus and the first annulus reduce, so that pull rod is back swung centainly
Angle realizes the reciprocally swinging of change and ring gear by adjusting motor speed, when the intracorporal annular element of furnace is by abundant carburizing
Stop heating afterwards, the intracorporal exhaust gas of furnace is discharged by exhaust pipe by exhaust pump, furnace body is opened hermatic door after being fully cooled and taken
Annular element is put into designated place and completes entire annular element carburizing process out.
Shaft is rotatably connected at left and right sides of first annulus and the second annulus；The change and ring gear are respectively fixedly connected
In shaft；The both ends of the shaft is fixed with material bar；The material boom end is equipped with limited block；The limited block effectively prevent ring
Shape part is fallen from material bar.When work, when change and ring gear swing back and forth, connected shaft is turned round with change and ring gear
Dynamic, the material bar being connected in shaft is rotated with shaft, material bar swing back and forth certain angle when, expect that the annular element placed on bar exists
It is slided on material bar, the place of two neighboring annular element contact can generate gap, to keep annular element and gas penetration enhancer abundant
Contact, keeps annular element carburizing more abundant, improves carburizing efficiency.
The material bar includes connecting column, bull stick and blowing bar；The connecting column is connected in shaft；Described bull stick one end turns
Dynamic to be connected on connecting column, the bull stick other end is fixed with blowing bar；The blowing bar is hollow structure, is uniformly embedded on blowing bar
Multiple supporting modules；The supporting module shape is cross, and supporting module is used to support annular element, and supporting module includes branch
Support seat, fixed plate, support column, adjustable spring and inserted link；The support base is on material bar；The fixed plate is connected in support base
On side wall；The support column is through the top of fixed plate and support base and the support column is slidably connected in support base top
Portion, support column bottom are hemispherical structure, are provided with through-hole and through-hole on the corresponding blowing bar in support column bottom position
Diameter is greater than support column diameter, and support column is equipped with jack；The inserted link is located at clamping in jack, sets between inserted link and fixed plate
There is adjustable spring；Slide bar is slidably connected in the blowing bar；Multiple groups sliding slot is offered on the slide bar；The sliding slot and blowing
Lead to the hole site on bar is corresponding, and every group of sliding slot is in 180 ° of arrangements, and two adjacent groups sliding slot is in 90 ° of distributions and two adjacent groups sliding slot is along axis
It is equidistant to direction.
It is provided with a plurality of air holes on the blowing bar；The stomata can blow to furnace intracorporal gas penetration enhancer in part
Wall.When work, during band moving slide-bar constantly slides, it is passed through the intracorporal gas penetration enhancer of furnace and is blowed to via the stomata on blowing bar
Annular element inner wall effectively accelerates the carburizing rate of annular element inner wall.
Side on the bull stick close to blowing bar is fixed with first gear；It is fixed on first annulus and the second annulus
There is multipair second gear；The shaft is rotatably connected in second gear, and the second gear is engaged with first gear；Described
One annulus and the second annulus rear and front end are fixed with blowing bar.When work, when expecting that bar swings back and forth with shaft, bar is expected
The first gear being connected on bull stick is swung with material bar, first gear during swinging opposite second gear slide, due to the
One gear and second gear are intermeshed, so first gear is rotated relative to second gear, first gear drives the rotation of blowing bar,
So that blowing bar is owned rotation on one side with shaft swing while, accelerate the carburizing rate of annular element, improves carburizing effect
Rate can carry out carburizing for being placed on the material bar of the left and right sides to the demanding annular element of carburizing, while will require carburizing
Low annular element is placed on the connected blowing bar in rear and front end and carries out carburizing, makes full use of the intracorporal space of furnace and resource, mentions
Hypertonic carbon efficiencies.
The ring gear is equipped with tooth form block；Sleeve is fixed on two fixed blocks；Described tension spring one end is connected in
In sleeve；Groove is provided on the sleeve；The tooth form block of the ring gear gos deep into the groove of sleeve；The tooth of the tension spring and ring gear
The cooperation of shape block.Tension spring stress can be made flexible when work, when connecting rod is swung, since the tooth form block of tension spring and ring gear cooperates,
So tension spring can stir ring gear tooth form block when flexible makes ring gear turn an angle, ring gear rotation drives the material bar in shaft
It swinging, expects the annular element placed on bar when swinging on expecting bar, the place of two neighboring annular element contact can generate gap,
To make annular element come into full contact with gas penetration enhancer, keep annular element carburizing more abundant, improves carburizing efficiency.
Beneficial effects of the present invention are as follows:
1. the present invention guarantees annular element case-carbonizing depth and surface hardness by carbon potential in change furnace body and temperature,
Annular element in the present invention is simple with carburizing furnace structure, easy to operate, and easy to adjust, carburizing is high-efficient, and carburizing effect is good.
2. the present invention is by being carried out continuously ring-shaped work pieces carburizing and quenching, so as to shorten process flow, reduces and turn
Fortune and the cost of heat treatment, improve production efficiency.
3. the annular element carburizer in the present invention is arranged supporting module on blowing bar and is arranged in blowing bar
Slide bar, using the support column on the sliding slot and supporting module on slide bar come so that the place alternating that support column is contacted with annular element
It is detached from, contact, to carry out carburizing to the place that annular element is contacted with support column, guarantees that annular element carburizing is abundant, improve
Carburizing efficiency.
Detailed description of the invention
Fig. 1 is process flow chart of the invention；
Fig. 2 is the structural schematic diagram of annular element carburizer in the present invention；
Fig. 3 is A-A cross-sectional view in Fig. 2；
Fig. 4 is enlarged drawing at C in Fig. 3；
Fig. 5 is enlarged drawing at B in Fig. 2；
Fig. 6 is blowing rod structure schematic diagram in Fig. 4；
Fig. 7 is D-D cross-sectional view in Fig. 6.
In figure: furnace body 1, motor 2, transmission shaft 3, hermatic door 4, the first annulus 5, change 6, ring gear 7, tooth form block 71, second
Annulus 8, connecting rod 9, fixed block 10, tension spring 11, pull rod 12, switch block 13, steel ball 14, reset spring 15, air inlet pipe 16, exhaust pipe
17, air intake pump 18, exhaust pump 19, heat block 20, shaft 21, material bar 22, connecting column 221, bull stick 222, blowing bar 223, stomata
224, first gear 225, limited block 23, supporting module 24, support base 241, fixed plate 242, support column 243, adjustable spring
244, inserted link 245, slide bar 25, sliding slot 251, second gear 26, sleeve 27, groove 271.
Specific embodiment
It is carried out using a kind of Fig. 1-7 pairs of annular element carburizing quenching process of the invention as described below.
Such as Fig. 1-7, a kind of annular element carburizing quenching process of the present invention, which includes the following steps:
S1: putting into soaking and washing in service sink added with aqueous cleaning agent for annular element, after with clear water by annular element
It rinses well, to remove annular element surface impurity and greasy dirt, by annular element surface impurity and cleaning oil pollution completely to guarantee
Annular element carburizing precision；
S2: classify after the annular element drying after being cleaned in S1, the demanding annular element of carburizing is put into ring-type
On material bar in part carburizer, requires low annular element to be placed on blowing bar carburizing, ring-type can be made full use of
Space in part carburizer improves carburizing efficiency, is heated up to annular element with carburizer, after being warming up to suitable temperature
Start to be passed through gas penetration enhancer methanol, continue to be warming up to certain temperature, keeping carbon potential is 0.85%, and keeps the temperature 30 minutes；Gas seeps
Agent methanol decomposites active atoms of carbon and penetrates into annular element surface layer after being heated, when carbon potential is lower, in annular element carburizer
Temperature is lower, not will lead to annular element decarburization；
S3: continuing to be passed through gas penetration enhancer propane after the completion of S2, and annular element is risen to the carbon potential in carburizer
1.10%, keep temperature-resistant and holding 130 minutes in annular element carburizer；It is passed through propane and improves the concentration of carbon in turn
Improve carbon potential in annular element carburizer, it is ensured that annular element carburized (case) depth is within the scope of 0.7 to 1.0mm；
S4: reducing the amount for being passed through gas penetration enhancer methane and propane after the completion of S3, and annular element annular element is seeped
Carbon potential is down to 0.75% in carbon furnace, keeps furnace temperature constant, and temperature fluctuation range control is at ± 0.2 DEG C in annular element carburizer
In range, soaking time is 200 minutes；Concentration by reducing carbon reduces carbon potential, avoids annular work piece because of carbonization concentration
Surface hardness caused by higher is overproof, guarantees also to can guarantee annular element surface hardness while carburized (case) depth；
S5: after the completion of S4, quenching cooling is carried out to annular workpieces；Annular element after carburizing is quenched,
Annular element surface generates compression internal stress, advantageous to the fatigue strength for improving annular element；
Annular element carburizer in described S2, S3 and S4, including furnace body 1, motor 2, transmission shaft 3 and hermatic door 4；Institute
It states motor 2 and is connected in 1 top middle position of furnace body；The transmission shaft 3 is rotatably connected on 1 top of furnace body, and the upper end of transmission shaft 3 is solid
It is connected on the axis of motor 2, the lower end of transmission shaft 3 is hinged among the first annulus 5 by link block；First annulus 5 is located at
In furnace body 1, it is socketed with change 6 on the left of the first annulus 5, ring gear 7 is socketed on the right side of the first annulus 5, the first annulus 5 is arranged right below
Second annulus 8 and second annulus 8 is located in furnace body 1；Second annulus 8 is consistent with 5 structure of the first annulus, the second annulus
8 left sides are socketed with ring gear 7, are socketed with change 6 on the right side of the second annulus 8, in the change 6 being socketed on the second annulus 8 and the first annulus 5
Connecting rod 9 is fixed between the change 6 of socket；Fixed block 10 is equipped with below two ring gears 7；Two fixed blocks 10 divide
It is not connected in 8 left bottom of 5 bottom right side of the first annulus and the second annulus；Between the transmission shaft 3 and the fixed block 10 of top
Equipped with tension spring 11；Tension spring 11 is equipped between the connecting rod 9 and the fixed block 10 of lower section；Connection is fixed on second annulus 8
Fixed block；Hinge column is fixed on the connection fixing block；The hinge column lower end is hinged with pull rod 12；12 quantity of pull rod
It is two, 12 lower end of pull rod of top and 12 one end of pull rod of lower section are hinged, and 12 other end of pull rod of lower section is hinged on
On hinge column, the hinge column of lower section is rotatably connected on 1 bottom of furnace body by switch block 13；Pull rod 12 described in two is mutually cut with scissors
The place of connecing is fixed with steel ball 14, is equipped with reset spring 15 between two pull rods 12；16 He of air inlet pipe is equipped in the middle part of 1 lower end of furnace body
Exhaust pipe 17；1 bottom of furnace body is run through in described 16 one end of air inlet pipe, and 16 other end of air inlet pipe is equipped with air intake pump 18；The exhaust pipe
1 bottom of furnace body is run through in 17 one end, and 17 other end of exhaust pipe is equipped with exhaust pump 19；1 side wall of furnace body is equipped with multiple heat blocks
20；The heat block 20 is used to heat up to furnace body 1.When work, hermatic door 4 is opened, the annular element to carburizing is put into, after putting well
Hermatic door 4 is closed, heat block 20 is opened and starts to heat furnace body 1, use air intake pump 18 after furnace body 1 is heated to suitable temperature
Gas penetration enhancer is passed through in furnace body 1 by air inlet pipe 16, keeps temperature for a period of time, while starting motor 2, motor 2, which drives, to be passed
Moving axis 3 rotates, and with the first annulus 5 of 3 lower end of transmission shaft hingedly as transmission shaft 3 rotates, when the first annulus 5 rotates, passes through company
The second annulus 8 that bar 9 connects is with rotation, so that rotating with the hinged pull rod 12 of the second annulus 8,12 end of pull rod is connected
Steel ball 14 rotate, steel ball 14 is subject to centrifugal forces to 1 inner wall whipping of furnace body when rotating and makes two drawings being hinged
The angle that bar 12 opens becomes smaller, to pull the second annulus 8 to move down, due to hanging down between the first annulus 5 and the second annulus 8
Straight distance increases so that connecting rod 9 turns an angle, and the change 6 being connected with connecting rod 9 turns an angle with connecting rod 9, connecting rod 9
11 stress of tension spring being connected on centre connected tension spring 11 and transmission shaft 3 can also stretch；When 2 revolving speed of motor becomes smaller or stops
When, the centrifugal force that steel ball 14 is subject to reduces therewith, and two pull rods 12 being hinged open more under the action of reset spring 15
Wide-angle, to make the vertical range between the second annulus 8 and the first annulus 5 reduce, so that pull rod 12 back swings certain angle
Degree realizes the reciprocally swinging of change 6 and ring gear 7 by adjusting 2 revolving speed of motor, when the annular element in furnace body 1 is sufficiently seeped
Stop heating after carbon, the exhaust gas in furnace body 1 is discharged by exhaust pipe 17 by exhaust pump 19, furnace body 1 is opened after being fully cooled
Hermatic door 4 takes out annular element and is put into the entire annular element carburizing process of designated place completion.
First annulus 5 and 8 left and right sides of the second annulus are rotatably connected to shaft 21；The change 6 and ring gear 7 divide
It is not connected in shaft 21；21 both ends of shaft are fixed with material bar 22；22 end of material bar is equipped with limited block 23；It is described
Limited block 23 effectively prevent annular element to fall from material bar 22.When work, when change 6 and ring gear 7 swing back and forth, with change
6 and the connected shaft 21 of ring gear 7 carry out back rotation, the material bar 22 being connected in shaft 21 is rotated with shaft 21, and material bar 22 carrys out backswing
When dynamic certain angle, expect that the annular element placed on bar 22 is slided on material bar 22, the place of two neighboring annular element contact
Gap can be generated, so that annular element be made to come into full contact with gas penetration enhancer, keeps annular element carburizing more abundant, improves carburizing effect
Rate.
The material bar 22 includes connecting column 221, bull stick 222 and blowing bar 223；The connecting column 221 is connected in shaft 21
On；Described 222 one end of bull stick is rotatably connected on connecting column 221, and 222 other end of bull stick is fixed with blowing bar 223；The blowing
Bar 223 is hollow structure, is uniformly embedded with multiple supporting modules 24 on blowing bar 223；24 shape of supporting module is cross,
Supporting module 24 is used to support annular element, and supporting module 24 includes support base 241, fixed plate 242, support column 243, flexible bullet
Spring 244 and inserted link 245；The support base 241 is on material bar 22；The fixed plate 242 is connected on 241 side wall of support base；
The support column 243 is through the top of fixed plate 242 and support base 241 and the support column 243 is slidably connected at support base 241
Top middle portion, 243 bottom of support column are hemispherical structure, on the corresponding blowing bar 223 in 243 bottom position of support column
It is provided with through-hole and through-hole diameter is greater than 243 diameter of support column, support column 243 is equipped with jack；The inserted link 245 is located in jack
Clamping is equipped with adjustable spring 244 between inserted link 245 and fixed plate 242；Slide bar 25 is slidably connected in the blowing bar 223；Institute
It states and offers multiple groups sliding slot 251 on slide bar 25；The sliding slot 251 is corresponding with the lead to the hole site on blowing bar 223, every group of sliding slot
251 in 180 ° of arrangements, and two adjacent groups sliding slot 251 is in 90 ° of distributions and two adjacent groups sliding slot 251 is in axial direction equidistant.Work
When making, annular element is placed on after being fixed on the support column 243 of supporting module 24, is passed through gas penetration enhancer to annular element carburizing
When, blowing bar 223 swing back and forth certain angle when, slide bar 25 is since gravity slides in blowing bar 223, in the mistake of sliding
Cheng Zhong, on the one group of sliding slot 251 and material bar 22 on slide bar 25 when through-hole face, two support columns 243 of supporting module 24 go deep into
Into sliding slot 251, two support columns 243 and annular element inner wall are detached from, can be to the local carburizing of contact, so that annular element
Carburizing is more abundant, when slide bar 25 continues sliding, is deep into support column 243 in sliding slot 251 and is detached from sliding slot 251, on support column 243
End is withstood on again on annular element inner wall, and when sliding into certain distance, other two support column 243 of supporting module 24 gos deep into
In sliding slot 251, so that other two support column 243 and annular element inner wall are detached from, to connect to support column 243 with annular element
The local carburizing of touching, alternately support annular element improves carburizing and imitates two groups of support columns 243 so that annular element carburizing is more abundant
Rate.
As shown in figure 5, being provided with a plurality of air holes 224 on the blowing bar 223；The stomata 224 can will be in furnace body 1
Gas penetration enhancer blows to part inner wall.When work, during slide bar 25 constantly slides, the gas penetration enhancer being passed through in furnace body 1 is passed through
Annular element inner wall is blowed to by the stomata 224 on blowing bar 223, effectively accelerates the carburizing rate of annular element inner wall.
Side on the bull stick 222 close to blowing bar 223 is fixed with first gear 225；First annulus 5 and second
Multipair second gear 26 is installed on annulus 8；The second gear 26 is located at 21 two sides of shaft and second gear 26 and the first tooth
225 engagement of wheel；First annulus 5 and 8 rear and front end of the second annulus are fixed with blowing bar 223.When work, material bar 22 with
Shaft 21 when swinging back and forth, expect that the first gear 225 being connected on the bull stick 222 of bar 22 is swung with material bar 22, first gear
Opposite second gear 26 is slided during 225 swings, since first gear 225 and second gear 26 are intermeshed, so the
One gear 225 is rotated relative to second gear 26, and first gear 225 drives blowing bar 223 to rotate, so that blowing bar 223 1
While accelerating the carburizing rate of annular element as shaft 21 swings one side own rotation, carburizing efficiency, 5 He of the first annulus are improved
Second annulus, 8 rear and front end is fixed with blowing bar 223 and the left and right sides and is equipped with material bar 22, can will be to the demanding ring-type of carburizing
Part is placed on the material bar 22 of the left and right sides and carries out carburizing, while consolidating requiring low annular element to be placed on rear and front end carburizing
Carburizing is carried out on blowing bar 223 even, makes full use of the space in furnace body 1 and resource, improves carburizing efficiency.
The ring gear 7 is equipped with tooth form block 71；Sleeve 27 is fixed on two fixed blocks 10；The tension spring 11 1
End is connected in sleeve 27；Groove 271 is provided on the sleeve 27；The tooth form block 71 of the ring gear 7 gos deep into the groove of sleeve 27
In 271；The tooth form block 71 of the tension spring 11 and ring gear 7 cooperates.It can make 11 stress of tension spring when work, when connecting rod 9 is swung
It is flexible, since the tooth form block 71 of tension spring 11 and ring gear 7 cooperates, so tension spring 11 can stir the tooth form block 71 of ring gear 7 when stretching
Ring gear 7 is set to turn an angle, the rotation of ring gear 7 drives the material bar 22 in shaft 21 to swing, and expects the annular element placed on bar 22
When swinging on expecting bar 22, the place of two neighboring annular element contact can generate gap, so that annular element and gas be made to seep
Agent comes into full contact with, and keeps annular element carburizing more abundant, improves carburizing efficiency.
Specifically used process is as follows:
In use, opening hermatic door 4, it is put into the annular element to carburizing, hermatic door 4 is closed after putting well, opens heat block
20 start to heat furnace body 1, furnace body 1 are heated to gas penetration enhancer is passed through air inlet pipe 16 with air intake pump 18 after suitable temperature
It is passed through in furnace body 1, keeps temperature for a period of time, while starting motor 2, motor 2 drives transmission shaft 3 to rotate, with 3 lower end of transmission shaft
The first hinged annulus 5 is rotated with transmission shaft 3, and when the first annulus 5 rotates, the second annulus 8 for being connected by connecting rod 9 is with turning
Dynamic, so that rotating with the hinged pull rod 12 of the second annulus 8, the connected steel ball 14 in 12 end of pull rod is rotated, and steel ball 14 rotates
When be subject to centrifugal forces to 1 inner wall whipping of furnace body make two pull rods being hinged 12 open angle become smaller, thus
The second annulus 8 is pulled to move down, since the vertical range between the first annulus 5 and the second annulus 8 increases so that connecting rod 9 rotates
Certain angle, the change 6 being connected with connecting rod 9 turn an angle with connecting rod 9, the tension spring 11 being connected among connecting rod 9 and transmission
11 stress of tension spring being connected on axis 3 can also stretch, since the tooth form block 71 of tension spring 11 and ring gear 7 cooperates, so tension spring 11
The tooth form block 71 that ring gear 7 can be stirred when flexible makes ring gear 7 turn an angle, and the rotation of ring gear 7 drives the material bar in shaft 21
22 swing, and expect the annular element placed on bar 22 when swinging on expecting bar 22, the place of two neighboring annular element contact can produce
Raw gap keeps annular element carburizing more abundant so that annular element be made to come into full contact with gas penetration enhancer, improves carburizing efficiency.When
When 2 revolving speed of motor becomes smaller or stops, the centrifugal force that steel ball 14 is subject to reduces therewith, and two pull rods 12 being hinged are resetting bullet
Greater angle is opened under the action of spring 15, to make the vertical range between the second annulus 8 and the first annulus 5 reduce, so that drawing
Bar 12 back swings certain angle, realizes the reciprocally swinging of change 6 and ring gear 7, change 6 and tooth by adjusting 2 revolving speed of motor
When ring 7 swings back and forth, connected shaft 21 carrys out back rotation with change 6 and ring gear 7, and the material bar 22 being connected in shaft 21 is with shaft
21 rotations, material bar 22 swing back and forth certain angle when, expect that the annular element placed on expecting bar 22 when swinging on bar 22, adjacent two
The place of a annular element contact can generate gap, so that annular element be made to come into full contact with gas penetration enhancer, seep annular element
Carbon is more abundant, improves carburizing efficiency.
When being passed through gas penetration enhancer to annular element carburizing, blowing bar 223 swing back and forth certain angle when, slide bar 25 due to weight
Power acts on sliding in blowing bar 223, and through-hole is being just during sliding, on the one group of sliding slot 251 and material bar 22 on slide bar 25
Two support columns 243 of clock synchronization, supporting module 24 are deep into sliding slot 251, and two support columns 243 and annular element inner wall are de-
From the local carburizing that can be contacted to support column 243 with annular element, so that annular element carburizing is more abundant, slide bar 25 continues
When sliding, the support column 243 being deep into sliding slot 251 is detached from sliding slot 251, and 243 upper end of support column is withstood in annular element again
On wall, when sliding into certain distance, other two support column 243 of supporting module 24 gos deep into sliding slot 251, so that other two
A support column 243 is detached from annular element inner wall, thus the local carburizing contacted to support column 243 with annular element, two groups of branch
Dagger 243 is alternately supported annular element, so that annular element carburizing is more abundant, improves carburizing efficiency.At the same time, exist
During the constantly sliding of slide bar 25, the gas penetration enhancer being passed through in furnace body 1 blows to ring-type via the stomata 224 on blowing bar 223
Part inner wall effectively accelerates the carburizing rate of annular element inner wall.
When expecting that bar 22 swings back and forth with shaft 21, expect the first gear 225 being connected on the bull stick 222 of bar 22 with material
Bar 22 is swung, the opposite sliding of second gear 26 during swinging of first gear 225, due to first gear 225 and second gear
26 intermeshings, so first gear 225 is rotated relative to second gear 26, first gear 225 drives blowing bar 223 to rotate, from
And make blowing bar 223 on one side with shaft 21 swing while own rotation, accelerate the carburizing rate of annular element, to improve
Be connected blowing bar 223 and the left and right sides of carburizing efficiency, the first annulus 5 and 8 rear and front end of the second annulus is equipped with material bar 22, can will
The demanding annular element of carburizing is placed on the material bar 22 of the left and right sides and carries out carburizing, while low ring-type will be required carburizing
Part is placed on the connected blowing bar 223 in rear and front end and carries out carburizing, makes full use of the space in furnace body 1 and resource, improves and seep
Carbon efficiencies.
Stop heating after annular element is by abundant carburizing, the exhaust gas in furnace body 1 is passed through by exhaust pipe by exhaust pump 19
17 discharges, furnace body 1 open the taking-up of hermatic door 4 annular element and are put into the entire annular element carburizing of designated place completion after being fully cooled
Process.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of annular element carburizing quenching process, it is characterised in that: the technique includes the following steps:
S1: putting into soaking and washing in service sink added with aqueous cleaning agent for annular element, after annular element is rinsed with clear water
Completely, to remove annular element surface impurity and greasy dirt；
S2: classify after the annular element drying after being cleaned in S1, the demanding annular element of carburizing is put into annular element
With on the material bar in carburizer, require low annular element to be placed on blowing bar carburizing, to annular element carburizer into
Row heating, starts to be passed through gas penetration enhancer methanol after being warming up to suitable temperature, continues to be warming up to certain temperature, holding carbon potential is
0.85%, and keep the temperature 30 minutes；
S3: continuing to be passed through gas penetration enhancer propane after the completion of S2, and annular element is risen to 1.10% with the carbon potential in carburizer,
Keep temperature-resistant and holding 130 minutes in annular element carburizer；
S4: the amount for being passed through gas penetration enhancer methane and propane is reduced after the completion of S3, carbon potential in annular element carburizer is down to
0.75%, keep furnace temperature constant, temperature fluctuation range control is within the scope of ± 0.2 DEG C in annular element carburizer, when heat preservation
Between be 200 minutes；
S5: after the completion of S4, annular element is quenched；
Annular element carburizer in described S2, S3 and S4, including furnace body (1), motor (2), transmission shaft (3) and hermatic door
(4)；The motor (2) is connected in furnace body (1) top middle position；The transmission shaft (3) is rotatably connected on furnace body (1) top,
The upper end of transmission shaft (3) is connected on the axis of motor (2), and the lower end of transmission shaft (3) is hinged on the first annulus (5) by link block
It is intermediate；First annulus (5) is located in furnace body (1), is socketed with change (6) on the left of the first annulus (5), and the first annulus (5) is right
Side is socketed with ring gear (7), and the first annulus (5) is arranged right below the second annulus (8) and second annulus (8) is located at furnace body (1)
It is interior；Second annulus (8) is socketed with ring gear (7), the second annulus on the left of the second annulus (8) as the first annulus (5) structure
(8) right side is socketed with change (6), the change (6) being socketed on the second annulus (8) and the change (6) being socketed on the first annulus (5) it
Between be fixed with connecting rod (9)；Fixed block (10) are equipped with below two ring gears (7)；Two fixed blocks (10) are solid respectively
It is connected in the first annulus (5) bottom right side and the second annulus (8) left bottom；The fixed block (10) of the transmission shaft (3) and top
Between be equipped with tension spring (11)；Tension spring (11) are equipped between the connecting rod (9) and the fixed block (10) of lower section；Second annulus
(8) connection fixing block is fixed on；Hinge column is fixed on the connection fixing block；The hinge column lower end is hinged with pull rod
(12)；Pull rod (12) quantity is two, and pull rod (12) lower end of top and pull rod (12) one end of lower section are hinged,
Pull rod (12) other end of lower section is hinged on hinge column, and the hinge column of lower section is rotatably connected on furnace body by switch block (13)
(1) bottom；Pull rod (12) place of being hinged described in two is fixed with steel ball (14), is equipped between two pull rods (12) and is resetted bullet
Spring (15)；Air inlet pipe (16) and exhaust pipe (17) are equipped in the middle part of furnace body (1) lower end；Furnace is run through in described air inlet pipe (16) one end
Body (1) bottom, air inlet pipe (16) other end are equipped with air intake pump (18)；Furnace body (1) bottom, row are run through in described exhaust pipe (17) one end
Tracheae (17) other end is equipped with exhaust pump (19)；Furnace body (1) side wall is equipped with multiple heat blocks (20)；The heat block
(20) for heating up to furnace body (1).
2. a kind of annular element carburizing quenching process according to claim 1, it is characterised in that: first annulus (5)
Shaft (21) are rotatably connected to the second annulus (8) left and right sides；The change (6) and ring gear (7) are respectively fixedly connected in shaft
(21) on；Shaft (21) both ends are fixed with material bar (22)；Material bar (22) end is equipped with limited block (23)；The limit
Position block (23) effectively prevent annular element to fall from material bar (22).
3. a kind of annular element carburizing quenching process according to claim 2, it is characterised in that: the material bar (22) includes
Connecting column (221), bull stick (222) and blowing bar (223)；The connecting column (221) is connected on shaft (21)；The bull stick
(222) one end is rotatably connected on connecting column (221), and bull stick (222) other end is fixed with blowing bar (223)；The blowing bar
(223) it is hollow structure, is uniformly embedded with multiple supporting modules (24) on blowing bar (223)；Supporting module (24) shape is
Cross, supporting module (24) are used to support annular element, supporting module (24) include support base (241), fixed plate (242),
Support column (243), adjustable spring (244) and inserted link (245)；The support base (241) is on material bar (22)；The fixed plate
(242) it is connected on support base (241) side wall；The support column (243) runs through the top of fixed plate (242) and support base (241)
End and the support column (243) are slidably connected at support base (241) top middle portion, and support column (243) bottom is hemispherical structure,
It is provided with through-hole on the corresponding blowing bar (223) in support column (243) bottom position and through-hole diameter is greater than support column
(243) diameter, support column (243) are equipped with jack；The inserted link (245) is located at clamping in jack, inserted link (245) and fixed plate
(242) adjustable spring (244) are equipped between；Slide bar (25) are slidably connected in the blowing bar (223)；On the slide bar (25)
Offer multiple groups sliding slot (251)；The sliding slot (251) is corresponding with the lead to the hole site on blowing bar (223), every group of sliding slot (251)
It is arranged in 180 °, two adjacent groups sliding slot (251) is in 90 ° of distributions and two adjacent groups sliding slot (251) is in axial direction equidistant.
4. a kind of annular element carburizing quenching process according to claim 3, it is characterised in that: the blowing bar (223)
On be provided with a plurality of air holes (224)；Air in furnace body (1) can be blowed to annular element inner wall by the stomata (224).
5. a kind of annular element carburizing quenching process according to claim 3, it is characterised in that: on the bull stick (222)
Side close to blowing bar (223) is fixed with first gear (225)；It is installed on first annulus (5) and the second annulus (8)
Multipair second gear (26)；The shaft (21) is rotatably connected on second gear (26), the second gear (26) and first
Gear (225) engagement；First annulus (5) and the second annulus (8) rear and front end are fixed with blowing bar (223).
6. a kind of annular element carburizing quenching process according to claim 1, it is characterised in that: set on the ring gear (7)
There are tooth form block (71)；Sleeve (27) are fixed on two fixed blocks (10)；Described tension spring (11) one end is connected in sleeve
(27) in；Groove (271) are provided on the sleeve (27)；The tooth form block (71) of the ring gear (7) gos deep into the groove of sleeve (27)
(271) in；The tooth form block (71) of the tension spring (11) and ring gear (7) cooperates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525911.0A CN109468577B (en) | 2018-12-13 | 2018-12-13 | Carburizing and quenching process for annular parts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525911.0A CN109468577B (en) | 2018-12-13 | 2018-12-13 | Carburizing and quenching process for annular parts |
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| CN109468577B CN109468577B (en) | 2020-12-25 |
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| CN101984138A (en) * | 2010-11-29 | 2011-03-09 | 大连创新齿轮箱制造有限公司 | Thermal treatment carburization charge tooling |
| CN201873758U (en) * | 2010-11-29 | 2011-06-22 | 大连创新齿轮箱制造有限公司 | Thermal treating and carburizing tooling for furnace charging |
| CN103014595A (en) * | 2012-12-27 | 2013-04-03 | 金湖县常盛动力机械配件有限公司 | Carburizing method of low-carbon alloy steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641373A (en) * | 1979-09-12 | 1981-04-18 | Shimadzu Corp | Method and apparatus for drip feeding process gas cementation |
| CN1325691C (en) * | 2005-01-21 | 2007-07-11 | 哈尔滨工业大学 | Rare earth controllable carburizing method for furnace for periodical operation |
| CN201424500Y (en) * | 2009-06-19 | 2010-03-17 | 洛阳Lyc轴承有限公司 | Carburizing device for heat treatment of bearing ring |
| CN101984138A (en) * | 2010-11-29 | 2011-03-09 | 大连创新齿轮箱制造有限公司 | Thermal treatment carburization charge tooling |
| CN201873758U (en) * | 2010-11-29 | 2011-06-22 | 大连创新齿轮箱制造有限公司 | Thermal treating and carburizing tooling for furnace charging |
| CN103014595A (en) * | 2012-12-27 | 2013-04-03 | 金湖县常盛动力机械配件有限公司 | Carburizing method of low-carbon alloy steel |
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