CN108866284A - A kind of the movable jaw annealing device and its heat treatment process of scroll chuck - Google Patents
A kind of the movable jaw annealing device and its heat treatment process of scroll chuck Download PDFInfo
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- CN108866284A CN108866284A CN201810810393.0A CN201810810393A CN108866284A CN 108866284 A CN108866284 A CN 108866284A CN 201810810393 A CN201810810393 A CN 201810810393A CN 108866284 A CN108866284 A CN 108866284A
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- movable jaw
- rack
- nest
- scroll chuck
- annealing device
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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
- C21D1/26—Methods of annealing
-
- 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
-
- 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
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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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
- C23C8/22—Carburising of ferrous surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses the movable jaw annealing devices and its heat treatment process of a kind of scroll chuck, are related to the heat treatment process field of movable jaw.Including rack, the two sides upper end of rack is equipped with the first nest and lower end is equipped with support base, the second nest is rotatably connected on support base, the outer wall of first nest and the second nest is wound with chain group, rack is equipped with motor and arbor is equipped with driving wheel, the side wall of second nest is equipped with driving wheel, and driving wheel and driving wheel outer wall are wound with belt.The present invention has the following advantages and effects：The movable jaw of processing to be annealed is transported by the way that full automatic transmission mechanism is arranged, production efficiency is improved, achieved the effect that energy conservation, efficiently produced, while passing through succinct convenient process, the surface hardness of movable jaw after improving heat treatment, enhances its service life.
Description
Technical field
The present invention relates to the heat treatment process field of movable jaw, in particular to a kind of movable jaw of scroll chuck is with moving back
Fiery device and its heat treatment process.
Background technique
Scroll chuck is moving radially using three movable jaws being evenly arranged on chuck body, Workpiece clamping and positioning
Machine tool accessories, be mainly made of chuck body, movable jaw and claw driving mechanism, with the abrasion of movable jaw, three
Movable jaw will appear bell mouth shape, and movable jaw will deviate lathe spindle center, increase the geometric tolerance of processing part
Greatly, therefore, carrying out heat treatment process to movable jaw is particularly important.
For traditional movable jaw in heat treatment, movable jaw successively passes through the works such as heat preservation, carburizing, quenching, tempering, annealing
Skill, wherein when annealing, it usually needs manually clamp movable jaw to be annealed using fire tongs, then movable jaw is placed in and is moved back
Flame range is annealed, and the labor intensity of worker is enhanced, and reduces the production efficiency of movable jaw, has much room for improvement.
Summary of the invention
The object of the present invention is to provide the movable jaw annealing devices and its heat treatment process of a kind of scroll chuck, reach
The effect of efficient production.
Above-mentioned technical purpose of the invention technical scheme is that：A kind of active card of scroll chuck
Pawl annealing device, including rack, the two sides upper end of the rack are rotatably connected to the first nest, under the rack
End middle part is provided with support base, is rotatably connected to a pair of second nest on the support base, first nest with
The outer wall of second nest is wound with chain group, and motor is provided in the rack, is arranged on the arbor of the motor
There is driving wheel, the side wall of one of them second nest is provided with driving wheel, outside the driving wheel and the driving wheel
Wall is wound with belt, and one end of the rack is provided with mounting base, is provided in the mounting base towards the chain direction and is set
The installing pipe set, the installing pipe side wall are provided with the threaded hole being connected in the middle part of the installing pipe, the threaded hole internal screw thread
It is connected with lock-screw.
By using above-mentioned technical proposal, when application above-mentioned apparatus carries out annealing operation to movable jaw, first will need
Oxygen spray pipe is fixed in rack, when fixed oxygen spray pipe, first unscrews lock-screw, is then inserted into the nozzle of oxygen spray pipe
In installing pipe, lock-screw is then screwed, until completing oxygen spray pipe after the outer nozzle wall of lock-screw abutting oxygen spray pipe
It is fixed.Then it drives the first nest and the second nest to rotate by motor and belt, that is, realizes the biography of chain group
It is dynamic, movable jaw is then placed in one end upper surface that chain group deviates from mounting base, chain group transports movable jaw to oxygen
When gas nozzle position, oxygen spray pipe is opened by oxygen and is sprayed onto movable jaw surface, that is, completes the annealing of movable jaw, annealing process
It is succinct convenient, the labor intensity of worker is greatly reduced, production efficiency is improved, has achieved the effect that efficient production.
The further setting of the present invention is：A pair of guide plate for being located at chain group two sides is provided in the rack.
By using above-mentioned technical proposal, by the way that guide plate is arranged, when movable jaw transmission, by guide plate insertion activity
In the card slot of claw side wall, and then good guide effect is played by guide plate, allows movable jaw along straight line side
To transmission, and then movable jaw is avoided to occur falling phenomenon.
The further setting of the present invention is：The rack is provided with close to the side of the mounting base for pushing against described lead
To the compressed part of plate side wall, the compressed part includes the pressure plate for being set to the frame upper end face, is set to the pressure plate
Its contact roller for being used to compress the guide plate side wall of end, regulating tank is provided on the pressure plate, on the pressure plate
It is provided with and is fed through the adjusting bolt that the regulating tank rear thread is connected to the mounting base and the abutting pressure plate upper surface.
By using above-mentioned technical proposal, since the temperature close to mounting base position is higher, guide plate herein holds
It bends deformation vulnerable to heat, guide plate is pushed against by setting compressed part, provides fixed support force for guide plate using compressed part,
The Curved variable that guide plate can be effectively reduced, enhances the service life of guide plate.When needing to adjust compressed part to guiding
When the pressing force of plate, adjusting bolt is unscrewed, pushes pressure plate that contact roller is driven to compress guiding using boosting mechanism, such as jack
Then plate screws adjusting bolt, until pressure plate is fixed, and then realizes after adjusting bolt abutting pressure plate upper surface
The fixation of entire compressed part.
The further setting of the present invention is：The frame upper end is horizontally disposed to be had along chain group transmission direction setting
Supporting plate, the chain group contact at the upper surface of the supporting plate.
By using above-mentioned technical proposal, when movable jaw to be placed in chain group, the gravity of movable jaw itself
It presses and is bent downwardly in the middle part of chain group, increase the pressure of chain group, chain group is easy to happen loosening, and then holds by setting
Supporting plate is contradicted for chain group, is provided effective support force using supporting plate for the estimated movable jaw of chain group, is reduced chain group
Pressure, reduce the loosening of chain group, improve the service life of chain group.
The further setting of the present invention is：The rack is provided with limit base, the limit close to one end of the mounting base
The upper end of position seat is provided with multiple horizontally disposed gag lever posts, is wound with limit rope on the gag lever post.
The spray boom of oxygen spray pipe is laid flat to gag lever post when fixed oxygen spray pipe by using above-mentioned technical proposal
Behind upper surface, recycles limit rope that the spray boom of oxygen spray pipe is fixed on gag lever post, further realize consolidating for oxygen spray pipe
It is fixed, it avoids shaking when oxygen spray pipe jet, improves stability when oxygen spray pipe work, while making movable jaw table
More uniform, the quality and qualification degree when raising movable jaw is annealed of the oxygen spraying in face.
The further setting of the present invention is：The support base includes the first pedestal being set in the rack, is set to
Second pedestal of first pedestal upper end, one of them described second nest are set to first pedestal, another
Second nest is set to second pedestal, and the upper surface of second pedestal is provided with for the described second multi-joint tooth
The placing groove of the shaft insertion of wheel, is threaded with for pushing against second pedestal side in the shaft of second nest
The locking nut of wall.
Locking nut is first unscrewed when chain group loosens by using above-mentioned technical proposal, then pushes the second multi-joint tooth
Wheel is moved upwards along the placing groove of the second pedestal, and the distance between the first nest and the second nest gradually increase at this time
Greatly, so that chain group is tightened, when the tightening degree of chain group, which reaches, to be needed, locking nut is screwed, until locking nut
When pushing against the second pedestal outer wall, the fixation of the second nest is completed, that is, completes the adjusting of chain group tightness, adjustment process
It is convenient and efficient.
The further setting of the present invention is：Clump weight is provided in the middle part of the lower end of the rack.
By using above-mentioned technical proposal, increases the gravity of entire rack itself by the way that clump weight is arranged, rack is avoided to shake
It is dynamic that movable jaw is caused to fall off phenomenon, when increasing stability when rack uses, while increasing movable jaw annealing
Stability.
It is a further object of the present invention to provide a kind of movable jaw heat treatment process of scroll chuck, including walk as follows
Suddenly：
Step 1：Shove charge uniformly lays flat movable jaw to heating furnace；
Step 2：Heating, to 880-920 DEG C and keeps 6-8h for heating furnace continuous heating；
Step 3：Carburizing remains temperature-resistant in heating furnace, methanol and propane, the dropwise addition of methanol is at the uniform velocity passed through into heating furnace
Speed is 0.5-1L/h, and the speed that is passed through of propane is 2-3L/h, keeps 4-5h；
Step 4：Quenching, movable jaw is taken out out of heating furnace, then movable jaw is placed in 50-120 DEG C of oil liquid,
Keep 0.1-0.2h；
Step 5：Cleaning is drained, after movable jaw is taken out out of oil liquid, after the oil liquid on movable jaw surface is drained, will be lived
In dynamic claw immersion barium chloride solution after 0.1-0.2h, movable jaw is taken out and drained；
Step 6：Heating furnace continued down to 200-480 DEG C and is kept temperature-resistant by tempering, movable jaw is placed in plus
In hot stove, 2-4h is kept；
Step 7：Annealing, workpiece is taken out out of heating furnace, then after workpiece is placed on annealing device, utilizes air-jet device
Oxygen is sprayed to movable jaw surface.
By using above-mentioned technical proposal, above-mentioned process is easy to operate, the movable jaw surface hardness after heat treatment
It is higher, it is not easy to which that deformation occurs, enhances its service life, wherein in step 5, it is molten that movable jaw is first immersed into barium chloride
After in liquid, then movable jaw is tempered.When movable jaw to be tempered, barium chloride solution is thermally decomposed, this time-division
Ion and group after solution penetrate into inside movable jaw, avoid movable jaw from decarburization phenomenon occur, and then enhance active card
The hardness of pawl improves its service life.
The further setting of the present invention is：The carbon potential CP of carbon impregnation stage in the step 6 is 1.1 ± 0.05.
By using above-mentioned technical proposal, because the excessively high phosphorus content that will lead to movable jaw of carbon potential increases, phosphorus content increases
The surface that will lead to movable jaw is added carbon black occur, so that movable jaw is more crisp, i.e., movable jaw is easy to happen fracture or damage.
Again because the too low phosphorus content that will lead to movable jaw of carbon potential reduces, phosphorus content reduces the hardness that can reduce movable jaw and holds
Pressure energy power, and then reduce the service life of movable jaw.Therefore by 880-920 DEG C of high temperature and the time of 4-5h, so that
The carbon potential CP of the carbon impregnation stage of movable jaw is 1.1 ± 0.05, so that the phosphorus content of movable jaw reaches requirement just, further
Increase the service life of movable jaw.
The further setting of the present invention is：Oxygen discharge rate in the step 7 is 7-8L/h.
By using above-mentioned technical proposal, by the way that the oxygen discharge rate of 7-8L/h is arranged, when so that movable jaw being annealed, activity
The surface of claw can more fully touch oxygen, and the hardness after improving movable jaw heat treatment improves movable jaw
Service life.
In conclusion the invention has the advantages that：
1. transporting the movable jaw of processing to be annealed by the way that full automatic transmission mechanism is arranged, the labor intensity of worker is reduced,
Production efficiency is improved, has achieved the effect that efficient production；
2. by the setting chain group that facilitates adjusting tightness and be easy to remove and repair, so that the adjusting of chain group and replacing
Journey is more convenient；
3. oxygen spray pipe is reinforced by setting gag lever post, so that the oxygen on movable jaw surface sprays more uniform, raising work
Quality and qualification degree when dynamic claw annealing；
4. by the way that succinct convenient process, the surface hardness of the movable jaw after improving heat treatment, so that active card is arranged
Deformation is less likely to occur pawl, enhances its service life；
5. after being impregnated using barium chloride solution to movable jaw, then being tempered to movable jaw, so that after barium chloride decomposes
Ion and group penetrate into inside movable jaw, avoid movable jaw from decarburization phenomenon occur, enhance the hardness of movable jaw.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the structural schematic diagram of the rack of embodiment；
Fig. 4 is the structural schematic diagram of the support base of embodiment；
Fig. 5 is the partial enlarged view in Fig. 3 at B.
Appended drawing reference：1, rack；11, clump weight；12, guide plate；13, supporting plate；2, mounting base；21, installing pipe；22,
Threaded hole；23, lock-screw；3, limit base；31, gag lever post；32, rope is limited；4, the first nest；5, support base；51,
First pedestal；52, the second pedestal；53, placing groove；54, locking nut；6, the second nest；61, driving wheel；7, chain group；
8, motor；81, driving wheel；82, belt；9, compressed part；91, pressure plate；92, contact roller；93, regulating tank；94, bolt is adjusted.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of movable jaw annealing device of scroll chuck as shown in Figure 1 and Figure 2, including rack 1, is set to rack 1
The clump weight 11 of lower end, one end of rack 1 are provided with mounting base 2, and installing pipe 21,21 side wall of installing pipe are provided in mounting base 2
It is provided with the threaded hole 22 for being connected to 21 middle part of installing pipe, 22 internal screw thread of threaded hole is connected with lock-screw 23.Rack 1 is close to peace
One end of dress seat 2 is provided with limit base 3, and the upper end of limit base 3 is provided with multiple horizontally disposed gag lever posts 31, on gag lever post 31
It is wound with limit rope 32.
When application above-mentioned apparatus carries out annealing operation to movable jaw, need that first oxygen spray pipe is fixed in rack 1,
When fixed oxygen spray pipe, first the spray boom of oxygen spray pipe is laid flat to the upper surface of gag lever post 31, then unscrew lock-screw 23,
Then by the nozzle insertion installing pipe 21 of oxygen spray pipe, lock-screw 23 is then screwed, until lock-screw 23 pushes against oxygen
After the outer nozzle wall of jet pipe, the spray boom of oxygen spray pipe is fixed on gag lever post 31 using limit rope 32, and then complete oxygen
The fixation of jet pipe.
As Figure 1 and Figure 4, the two sides upper end of rack 1 is rotatably connected to the first nest 4, in the lower end of rack 1
Portion is provided with support base 5, is rotatably connected to a pair of second nest 6 on support base 5, the first nest 4 and second multi-joint
The outer wall of gear 6 is wound with the chain group 7 positioned at 21 lower section of installing pipe, is provided with a pair in rack 1 and is located at 7 two sides of chain group
Guide plate 12,1 upper end of rack is horizontally disposed the supporting plate 13 for being arranged and being used for support chain group 7 along 7 transmission direction of chain group.
As shown in figure 4, being provided with motor 8 in rack 1, driving wheel 81 is provided on the arbor of motor 8, one of them second
The side wall of nest 6 is provided with driving wheel 61, and driving wheel 81 and 61 outer wall of driving wheel are wound with belt 82.
When movable jaw annealing, start motor 8, the driving wheel 81 of motor 8 rotates, and drives first by belt 82
The driving wheel 61 of 6 side wall of nest 4 and the second nest rotates, that is, realizes the transmission of chain group 7.Then by movable jaw
It takes out, movable jaw is placed in chain group 7 and deviates from one end upper surface of mounting base 2, and makes 12 insertion activity of guide plate
After in the card slot of claw side wall, chain group 7 drives movable jaw to move towards 2 direction of mounting base, and then realizes movable jaw
Transmission.
As shown in figure 4, support base 5 includes the first pedestal 51 being set in rack 1, is set to 51 upper end of the first pedestal
Second pedestal 52, one of them second nest 6 are set to the first pedestal 51, another second nest 6 is set to
Two pedestals 52, the upper surface of the second pedestal 52 are provided with the placing groove 53 of the shaft insertion for the second nest 6, and second is multi-joint
The locking nut 54 for pushing against 52 side wall of the second pedestal is threaded in the shaft of gear 6.
When chain group 7 (referring to Fig. 1) loosens, locking nut 54 is first unscrewed, then pushes the second nest 6 along the
The placing groove 53 of two pedestals 52 moves upwards, at this time between the first nest 4 (referring to Fig. 3) and the second nest 6 away from
From being gradually increased, so that chain group 7 is tightened, when the tightening degree of chain group 7, which reaches, to be needed, locking nut 54 is screwed,
Until completing the fixation of the second nest 6 when locking nut 54 pushes against the second 52 outer wall of pedestal, i.e. completion chain group 7 is elastic
The adjusting of degree.
When chain group 7 is damaged and disassembly is needed to repair, locking nut 54 is first unscrewed, then pushes the second multi-joint tooth
Wheel 6 is moved downward along the placing groove 53 of the second pedestal 52, at this time between the first nest 4 and the second nest 6 away from
From being gradually reduced, then by chain group 7 from the first nest 4 and 6 outer wall of the second nest after lower, to chain group 7 into
Row maintenance.When the repair is completed, chain group 7 is rewound after 6 outer wall of the first nest 4 and the second nest, is pushed away
Dynamic second nest 6 is moved upwards along placing groove 53, when the tightening degree of chain group 7, which reaches, to be needed, screws locking
The maintenance replacement of chain group 7 can be completed in nut 54.
As shown in figure 5, rack 1 is provided with close to the side of mounting base 2 (referring to Fig. 1) for pushing against 12 side wall of guide plate
Compressed part 9, compressed part 9 include be set to 1 upper surface of rack pressure plate 91, be set to pressure plate 91 end its be used to compress
The contact roller 92 of 12 side wall of guide plate is provided with regulating tank 93 on pressure plate 91, is provided on pressure plate 91 and is fed through regulating tank
93 rear threads are connected to mounting base 2 and push against the adjusting bolt 94 of 91 upper surface of pressure plate.
Since the temperature close to 2 position of mounting base is higher, guide plate 12 herein is easy the heated deformation that bends,
Guide plate 12 is pushed against by setting compressed part 9, is that guide plate 12 provides fixed support force using compressed part 9, can effectively drop
The Curved variable of low guide plate 12 enhances the service life of guide plate 12.
When needing to adjust pressing force of the compressed part 9 to guide plate 12, unscrews and adjust bolt 94, utilize boosting mechanism, example
It if jack pushes pressure plate 91 that contact roller 92 is driven to compress guide plate 12, then screws and adjusts bolt 94, until adjusting bolt
After 94 push against 91 upper surface of pressure plate, pressure plate 91 is fixed, and then realize the fixation of entire compressed part 9.
Working principle：When application above-mentioned apparatus carries out annealing operation to movable jaw, oxygen spray pipe is first fixed on machine
Then 2 position of mounting base of frame 1 drives the first nest 4 and the second nest 6 to rotate by motor 8 and belt 82,
Realize the transmission of chain group 7.Then movable jaw is taken out, movable jaw is placed in one that chain group 7 deviates from mounting base 2
Hold upper surface, and make guide plate 12 be embedded in movable jaw side wall card slot in after, chain group 7 drive movable jaw towards peace
The movement of 2 direction of seat is filled, oxygen spray pipe is opened at this time by oxygen and is sprayed onto movable jaw surface, that is, complete the annealing of movable jaw.
A kind of movable jaw heat treatment process of scroll chuck, includes the following steps：
Step 1：Shove charge uniformly lays flat movable jaw to heating furnace；
Step 2：Heating, to 880-920 DEG C and keeps 6-8h for heating furnace continuous heating；
Step 3：Carburizing remains temperature-resistant in heating furnace, methanol and propane, the dropwise addition of methanol is at the uniform velocity passed through into heating furnace
Speed is 0.5-1L/h, and the speed that is passed through of propane is 2-3L/h, keep 4-5h, and the carbon potential CP of carbon impregnation stage be 1.1 ±
0.05；Because the excessively high phosphorus content that will lead to movable jaw of carbon potential increases, the surface that phosphorus content increase will lead to movable jaw goes out
Existing carbon black, so that movable jaw is more crisp, i.e., movable jaw is easy to happen fracture or damage.It will lead to activity because carbon potential is too low again
The phosphorus content of claw reduces, and phosphorus content reduces the hardness and bearing capacity that can reduce movable jaw, and then reduces movable jaw
Service life.Therefore by 880-920 DEG C of high temperature and the time of 4-5h, so that the carbon potential of the carbon impregnation stage of movable jaw
CP is 1.1 ± 0.05, so that the phosphorus content of movable jaw reaches requirement just, further increase movable jaw uses the longevity
Life；
Step 4：Quenching, movable jaw is taken out out of heating furnace, then movable jaw is placed in 50-120 DEG C of oil liquid,
Keep 0.1-0.2h；
Step 5：Cleaning is drained, after movable jaw is taken out out of oil liquid, after the oil liquid on movable jaw surface is drained, will be lived
In dynamic claw immersion barium chloride solution after 0.1-0.2h, movable jaw is taken out and drained；
Step 6：Heating furnace continued down to 200-480 DEG C and is kept temperature-resistant by tempering, movable jaw is placed in plus
In hot stove, 2-4h is kept；
Wherein, in step 5, after first immersing movable jaw in barium chloride solution, then movable jaw is tempered.As general
When movable jaw is tempered, barium chloride solution is thermally decomposed, and the ion and group after decomposing at this time penetrate into movable jaw
Portion avoids movable jaw from decarburization phenomenon occur, and then enhances the hardness of movable jaw, improves its service life；
| Project | Common heat treatment | Embodiment |
| Tensile strength | 700MPa | 730MPa |
| Yield strength | 420MPa | 480MPa |
| Surface hardness | 54-56HRC | 58-60HRC |
Step 7：Annealing, workpiece is taken out out of heating furnace, then after workpiece is placed on annealing device, utilizes air-jet device
Oxygen is sprayed to movable jaw surface, wherein oxygen discharge rate is 7-8L/h.
By the way that the oxygen discharge rate of 7-8L/h is arranged, when so that movable jaw being annealed, the surface of movable jaw can more be filled
That divides touches oxygen, and the hardness after improving movable jaw heat treatment improves the service life of movable jaw.
In conclusion above-mentioned process is easy to operate, the movable jaw surface hardness after heat treatment is higher, it is not easy to send out
Raw deformation, enhances its service life.
Specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
It can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as in this hair
All by the protection of Patent Law in bright scope of the claims.
Claims (10)
1. a kind of movable jaw annealing device of scroll chuck, it is characterised in that：Including rack (1), the two of the rack (1)
Side upper end is rotatably connected to the first nest (4), is provided with support base (5), the branch in the middle part of the lower end of the rack (1)
A pair of second nest (6), first nest (4) and second nest are rotatably connected in support seat (5)
(6) outer wall is wound with chain group (7), is provided with motor (8) on the rack (1), is provided on the arbor of the motor (8)
The side wall of driving wheel (81), one of them second nest (6) is provided with driving wheel (61), the driving wheel (81) with
Driving wheel (61) outer wall is wound with belt (82), and one end of the rack (1) is provided with mounting base (2), the mounting base
(2) installing pipe (21) being arranged towards the chain direction is provided on, installing pipe (21) side wall, which is provided with, is connected to institute
The threaded hole (22) in the middle part of installing pipe (21) is stated, threaded hole (22) internal screw thread is connected with lock-screw (23).
2. a kind of movable jaw annealing device of scroll chuck according to claim 1, it is characterised in that：The rack
(1) a pair of guide plate (12) for being located at chain group (7) two sides is provided on.
3. a kind of movable jaw annealing device of scroll chuck according to claim 2, it is characterised in that：The rack
(1) side close to the mounting base (2) is provided with the compressed part (9) for pushing against the guide plate (12) side wall, the pressure
Tight portion (9) includes the pressure plate (91) for being set to the rack (1) upper surface, is set to its use of the end of the pressure plate (91)
In being provided with regulating tank (93), the pressure on the contact roller (92) for compressing guide plate (12) side wall, the pressure plate (91)
It is provided on tight plate and is fed through the regulating tank (93) rear thread and is connected to the mounting base (2) and pushes against the pressure plate (91)
The adjusting bolt (94) of upper surface.
4. a kind of movable jaw annealing device of scroll chuck according to claim 1, it is characterised in that：The rack
(1) upper end is horizontally disposed the supporting plate (13) along chain group (7) transmission direction setting, and the chain group (7) contacts at
The upper surface of the supporting plate (13).
5. a kind of movable jaw annealing device of scroll chuck according to claim 1, it is characterised in that：The rack
(1) one end close to the mounting base (2) is provided with limit base (3), and the upper end of the limit base (3) is provided with multiple levels and sets
The gag lever post (31) set is wound with limit rope (32) on the gag lever post (31).
6. a kind of movable jaw annealing device of scroll chuck according to claim 1, it is characterised in that：The support
Seat (5) includes the first pedestal (51) being set on the rack (1), second that is set to the first pedestal (51) upper end
Body (52), one of them described second nest (6) are set to first pedestal (51), another described second multi-joint tooth
Wheel (6) is set to second pedestal (52), and the upper surface of second pedestal (52) is provided with for second nest
(6) placing groove (53) of shaft insertion is threaded in the shaft of second nest (6) for pushing against described the
The locking nut (54) of two pedestals (52) side wall.
7. a kind of movable jaw annealing device of scroll chuck according to claim 1, it is characterised in that：The rack
(1) clump weight (11) are provided in the middle part of lower end.
8. a kind of movable jaw heat treatment process of scroll chuck, it is characterised in that：Include the following steps：
Step 1：Shove charge uniformly lays flat movable jaw to heating furnace；
Step 2：Heating, to 880-920 DEG C and keeps 6-8h for heating furnace continuous heating；
Step 3：Carburizing remains temperature-resistant in heating furnace, methanol and propane, the dropwise addition of methanol is at the uniform velocity passed through into heating furnace
Speed is 0.5-1L/h, and the speed that is passed through of propane is 2-3L/h, keeps 4-5h；
Step 4：Quenching, movable jaw is taken out out of heating furnace, then movable jaw is placed in 50-120 DEG C of oil liquid,
Keep 0.1-0.2h；
Step 5：Cleaning is drained, after movable jaw is taken out out of oil liquid, after the oil liquid on movable jaw surface is drained, will be lived
In dynamic claw immersion barium chloride solution after 0.1-0.2h, movable jaw is taken out and drained；
Step 6：Heating furnace continued down to 200-480 DEG C and is kept temperature-resistant by tempering, movable jaw is placed in plus
In hot stove, 2-4h is kept；
Step 7：Annealing, workpiece is taken out out of heating furnace, then after workpiece is placed on annealing device, utilizes air-jet device
Oxygen is sprayed to movable jaw surface.
9. the movable jaw annealing device and its heat treatment process of a kind of scroll chuck according to claim 8, special
Sign is：The carbon potential CP of carbon impregnation stage in the step 6 is 1.1 ± 0.05.
10. the movable jaw annealing device and its heat treatment process of a kind of scroll chuck according to claim 9, special
Sign is：Oxygen discharge rate in the step 7 is 7-8L/h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810810393.0A CN108866284A (en) | 2018-07-23 | 2018-07-23 | A kind of the movable jaw annealing device and its heat treatment process of scroll chuck |
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| CN201810810393.0A CN108866284A (en) | 2018-07-23 | 2018-07-23 | A kind of the movable jaw annealing device and its heat treatment process of scroll chuck |
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| CN108866284A true CN108866284A (en) | 2018-11-23 |
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