CN103468914B - Heat treatment process for gear shaving cutter - Google Patents
Heat treatment process for gear shaving cutter Download PDFInfo
- Publication number
- CN103468914B CN103468914B CN201310423888.5A CN201310423888A CN103468914B CN 103468914 B CN103468914 B CN 103468914B CN 201310423888 A CN201310423888 A CN 201310423888A CN 103468914 B CN103468914 B CN 103468914B
- Authority
- CN
- China
- Prior art keywords
- tempering
- basket
- gear shaver
- salt
- reversal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention relates to the field of gear shaving cutter machining and particularly relates to a heat treatment process applicable to a gear shaving cutter. The heat treatment process comprises the following steps: hanging the gear shaving cutter, quenching, quenching and checking, cooling by grades, washing, tempering, checking, washing, spraying sand, carrying out rust prevention and rolling out. With the adoption of the process, the uniformity of the hardness of a workpice can be guaranteed within an HRC1 (Rockwell hardness 1) range and the uniformity of the hardness in an existing process only can be realized within an HRC2-3 ((Rockwell hardness 2-3) range. According to the heat treatment process, the product specification and the heat-insulation time are specified clearly in the quenching and checking process. According to the heat treatment process, the problem of deforming an inner hole of the gear shaving cutter is solved; the hole cracking is a great difficulty troubling the heat treatment industry all the time, and the method can prevent the inner hole deformation and hole cracking phenomena.
Description
Technical field
The present invention relates to gear shaver manufacture field, one is applicable to gear shaver thermal treatment process specifically.
Background technology
Along with the development that China's automobile industry is maked rapid progress, more and more higher to the requirement of automobile core component wheel box, and automobile gearbox production is at present mainly perplex automobile industry to improve the bottleneck with development in China, the enterprise of the high-end automobile of production such as germany volkswagen, Japan three icepros, AM General is also the technology depending on wheel box in the world.And the mainly gearbox gear engagement of wheel box technology, and gear shaver mainly topmost link, the precision of gear shaver and the gears meshing precision of processing precision direct influence wheel box in gearbox gear processing.So the gears meshing precision of gear shaver and processing precision direct influence wheel box.So the thermal treatment of gear shaver is by for important.But current gear shaver thermal treatment exists a lot of problem, as 1, there is crackle in gear shaver thermal treatment endoporus; 2, there is distortion in gear shaver thermal treatment endoporus; 3, there is distortion in gear shaver thermal treatment surface; 4, gear shaver thermal treatment occurs collapsing tooth (falling tooth); 5, heat treatment hardness low cause not wear-resisting.
In existing gear shaver heat treatment technics, if Chinese Patent Application No. is CN201010124737, date of publication is 2011.9.21, name is called the patent of invention of " a kind of method of Processing Criterion gear ", its technical scheme is as follows: a kind of method that the present invention relates to Processing Criterion gear, be specifically related to a kind of employing and scrap the method that master gear manufactured by gear shaver, comprise the following steps: 1) selection: will scrap disc shaving cutter and select, what employing end face was complete scraps disc shaving cutter; 2) process: (1) tooth base is processed, and complete for end face being scrapped disc shaving cutter workpiece heat, cuts into and scrap disc shaving cutter coaxial line, is the tooth base of radius according to the radius of addendum of the gear of required processing; (2) roll being gear shape by the tooth base of reservation certain temperature and appearance pressurizes to rolling, and to rolling across in journey, the roller degree of depth of roll is cumulative is from small to big rolled into desired size requirement by tooth base always; (3) workpiece after above-mentioned processing is taken out cooling and through pickling, then through above-mentioned (2) step to the cold rolling one or many of workpiece until reach required dimensional precision and smooth finish, solve the technical problem of gear shaver Processing Criterion gear utilizing and scrap.
Above-mentioned documents is only be limited to temperature to control at 1200 DEG C for thermal treatment, do not control more specifically, occur that distortion appears in crackle, endoporus, distortion appears in surface, occur collapsing tooth (falling tooth) and hardness is low cause the problems such as not wear-resisting so still there is gear shaver thermal treatment endoporus.
Summary of the invention
The gear shaver thermal treatment endoporus existed to overcome existing gear shaver thermal treatment process occurs that distortion appears in crackle, endoporus, distortion appears in surface, occur collapsing tooth (falling tooth) and hardness is low and causes the problems such as not wear-resisting, now proposes a kind of gear shaver thermal treatment process especially.
For achieving the above object, concrete scheme of the present invention is as follows:
A kind of gear shaver thermal treatment process, is characterized in that, comprises the steps: gear shaver hanging, quenching, quenching inspection, gradient cooling, cleaning, tempering, inspection, cleaning, sandblasting, antirust and produce;
Described gear shaver hanging refers to and is positioned in suspending equipment by gear shaver, and suspending equipment is put into quench vessel, and described quench vessel is built with case hardening salt, and described suspending equipment submerges in case hardening salt.
Described suspending equipment includes reversal of the natural order of things framework, described reversal of the natural order of things framework comprises panel and backboard, described hanging frame center is provided with fixing guide pillar, described fixing guide pillar one end is connected with inside the backboard of reversal of the natural order of things framework, the unsettled panel direction being arranged on reversal of the natural order of things framework of the other end of described fixing guide pillar, centered by described fixing guide pillar, the holding tank of annular is also provided with between fixing guide pillar and the front of reversal of the natural order of things framework, above described reversal of the natural order of things framework, be provided with reversal of the natural order of things structure, be also provided with fixed sturcture on described holding tank surface.
The panel of described reversal of the natural order of things framework comprises top panel and lower panel, and the lower surface of described top panel and the upper surface correspondence of lower panel are arranged, and two panels contacts.
The junction of described top panel and lower panel is also provided with locking mechanism, and described locking mechanism is the snap lock of card slot type or is bolt-type locking.
Described reversal of the natural order of things structure for hanging upside down link, described in hang upside down the upper surface that link is arranged on top panel.
Described fixed sturcture comprises the point of fixity being arranged on top panel and lower panel, is provided with fixing chain between described two point of fixity, and two point of fixity are walked around at described fixing chain two ends respectively, and described fixing chain strides across unsettled one end of fixing guide pillar.
Described top panel is provided with at least one point of fixity, and lower panel is provided with at least one point of fixity, and the point of fixity quantity in described two panels is identical.
When suspending equipment submerges after to case hardening salt, the salt face of described gear shaver distance case hardening salt is L1, the span of described L1 is for being greater than 50mm, during described thermocouple measuring temperature, thermopair is placed in case hardening salt, the salt face of described thermopair top distance case hardening salt is L2, and the span of described L2 is 150-230mm.
In described quenching Step, first carry out classification preheating, then Quench heating is carried out to the gear shaver after classification preheating; The temperature of described Quench heating is 1190-1215 DEG C, and gear shaver hardness is HRC64-66, and gear shaver thickness is 20-50mm, and the Quench heating time is 230-305S; The time of described classification preheating is 2 times of the Quench heating time;
The described gradient cooling time is identical with the Quench heating time, and the isothermal time of described gradient cooling is 20-30 minute.
Described tempering step adopts tempering basket and tempering stove, gear shaver is put as in tempering basket, again tempering basket is put into tempering stove, tempering salt is provided with in tempering stove, the salt face of described tempering basket distance case hardening salt is L3, the span of described L3 is for being greater than 50mm, during described thermocouple measuring temperature, thermopair is placed in tempering salt, the salt face of described thermopair top distance tempering salt is L4, the span of described L4 is 500-550mm, and described tempering basket is L5 to the furnace bottom of tempering stove, and the span of described L5 is 150-200mm.
Described tempering basket comprises basket, described basket upper end is provided with suspension hook, the bottom of described basket is provided with base, described base is vertically provided with columniform column, before described basket, after, left, right four faces are provided with arc convex, the bottom of described arc convex is connected with bottom basket, the top of described arc convex is connected with the edge of basket upper end, the bottom width of described arc convex is greater than the top width of arc convex, described arc convex is evenly distributed with multiple aperture, inside and outside through by basket of described aperture, the diameter of described aperture is 2-10mm.
The length of described basket is 600-800mm, and wide is 450-530mm, is highly 550-650 mm.
Described suspension hook is distributed in basket upper end, and described suspension hook is at least two.
Multiple base is disposed with bottom described basket.
The bottom even of described basket is distributed with multiple aperture.
The height of described tempering basket inner column is 150-450mm.
Described tempering step comprises four tempering, and first time tempering is carried out in 8 hours after quenching checking procedure terminates, and follow-up tempering is all carry out when gear shaver is cooled to room temperature after again, in drawing process, adopts low temperature to enter Slow cooling after stove, slowly intensification, tempering; Described first time tempering, second time tempering and third time tempering temperature be 540 DEG C, the time is 1.5h, and the tempering temperature of described 4th tempering is 550 DEG C, and the time is 1.5h.
Described sandblasting step is specially: open dedusting fan, back-up sand in sand-spraying pot, open air compressor machine, gear shaver is put on the table, to gear shaver surface sand-blasting, after sandblasting, again carries out dust removal process, gear shaver is put into rust protection liquid, rust protection liquid temperature is 75-85 DEG C, soaks 15-25 minute, by air-dry for the gear shaver soaked.
The invention has the advantages that:
1. adopt this technique to the even performance guarantee of the hardness of workpiece within the scope of HRC1, and existing technique can only realize within the scope of HRC2-3.The present invention has clear and definite regulation to product specification and soaking time in quenching checkout procedure.
2. the present invention has quenching temperature and determines accurately, instead of in certain temperature range, the hardness of product can be made like this to reach (M2) HRC64-65, and existing technique can only make product hardness reach HRC64-66.
3. the present invention adopts special quenching, tempering frock, effectively can control the distortion that gear shaver produces in quenching, makes gear shaver surface deformation amount in 1/2 of process redundancy.Internal Hole Deformation amount is in 1/2 of process redundancy.
4, quenching Step of the present invention is in order to prevent Internal Hole Deformation, cracking, and roll off the production line in employing quenching temperature, increases the intensity of steel, the method for repeatedly preheating, classification, isothermal, reduces thermal stresses and the structural stress of steel.
5, the invention solves the problem of gear shaver Internal Hole Deformation, porous dehiscence is a great problem of puzzlement heat treatment industry always, adopts the inventive method then to solve Internal Hole Deformation, porous dehiscence phenomenon.
6, adopt present method, avoid tooth appears collapsing in gear shaver because hardness occurs not wear-resisting, much higher hard situation in normal use procedure, adopt different technique according to different materials, make gear shaver quench afterwards hardness in optimum Working.
7, the present invention employs four tempering especially, and the parameter of first three tempering is completely the same, and the tempering temperature of the 4th tempering and first three tempering is slightly high 10 DEG C, such benefit is that the parameter that the 4th tempering regulates is little, do not need significantly to adjust tempering equipment, and the temperature of the 4th tempering is slightly higher, the cooperation of four tempering can make gear shaver avoid occurring the distortion of crackle, endoporus, surface distortion, occur collapsing tooth (falling tooth) and hardness is low causes the problems such as not wear-resisting.
8, suspending equipment of the present invention by the Structure composing of panel and backboard suspending equipment, the structure of such combined is convenient to the maintenance replacing of suspending equipment, and after the fixed sturcture arranged on suspending equipment can ensure that gear shaver is placed on holding tank, can not drop from holding tank, make gear shaver when processing, safer, there will not be unforeseen circumstances.
9, the suspending equipment of the application is provided with locking latches between top panel and lower panel, two panels are fixed together by locking latches, when not needing to use, then can open locking latches and top panel and lower panel are separated, facilitate maintenance and the transport of suspending equipment.
10, complete fixing gear shaver by the structure of fixing chain, structure is simple, fixed function is excellent and cost is low, is convenient to apply on a large scale.
Four inwalls of 11, the tempering basket of the application are provided with arc convex, arc convex is provided with through hole, the heat of outside can be delivered to the inside of tempering basket by these through holes as required, and first heat can disperse by these apertures, avoid common tempering basket when tempering, overall heat is wayward, surging force is too strong, cause the tempering effect of gear shaver when tempering bad, and the gear shaver after tempering is also avoided occurring the situations such as crackle, and also enhances the intensity of gear shaver.
12, the bottom of the application's tempering basket is provided with multiple base, and multiple base can be placed multiple gear shaver simultaneously and carry out temper, adds the efficiency of work.
Accompanying drawing explanation
Fig. 1 is suspending equipment structural representation.
Fig. 2 is suspending equipment side-view.
Fig. 3 is that suspending equipment submerges to the schematic diagram of case hardening salt.
Fig. 4 is the structural representation of tempering basket display left and right two arc convex.
Fig. 5 is the structural representation of tempering basket in tempering stove.
In accompanying drawing: reversal of the natural order of things framework 11, panel 12, backboard 13, fixing guide pillar 14, holding tank 15, top panel 16, lower panel 17, locking mechanism 18, hangs upside down link 19, point of fixity 110, fixing chain 111.
Basket 21, suspension hook 22, base 23, column 24, arc convex 25, aperture 26.
Embodiment
Embodiment 1
A kind of gear shaver thermal treatment process, comprises the steps: gear shaver hanging, quenching, quenching inspection, gradient cooling, cleaning, tempering, inspection, cleaning, sandblasting, antirust and produce;
Described gear shaver hanging refers to and is positioned in suspending equipment by gear shaver, and suspending equipment is put into quench vessel, and described quench vessel is built with case hardening salt, and described suspending equipment submerges in case hardening salt.
When suspending equipment submerges after to case hardening salt, the salt face of described gear shaver distance case hardening salt is L1, and the span of described L1 is 60mm, during described thermocouple measuring temperature, thermopair is placed in case hardening salt, and the salt face of described thermopair top distance case hardening salt is L2, and the value of described L2 is 230mm.
In described quenching Step, first carry out classification preheating, then Quench heating is carried out to the gear shaver after classification preheating; The temperature of described Quench heating is 1190 DEG C, and gear shaver hardness is HRC66, and gear shaver thickness is 20mm, and the Quench heating time is 305S; The time of described classification preheating is 2 times of the Quench heating time;
The described gradient cooling time is identical with the Quench heating time, and the isothermal time of described gradient cooling is 20 minutes.
Described tempering step adopts tempering basket and tempering stove, gear shaver is put as in tempering basket, again tempering basket is put into tempering stove, tempering salt is provided with in tempering stove, the salt face of described tempering basket distance case hardening salt is L3, the span of described L3 is for being greater than 60mm, during described thermocouple measuring temperature, thermopair is placed in tempering salt, the salt face of described thermopair top distance tempering salt is L4, the value of described L4 is 550mm, and described tempering basket is L5 to the furnace bottom of tempering stove, and the value of described L5 is 150mm.
Described tempering step comprises four tempering, and first time tempering is carried out in 8 hours after quenching checking procedure terminates, and follow-up tempering is all carry out when gear shaver is cooled to room temperature after again, in drawing process, adopts low temperature to enter Slow cooling after stove, slowly intensification, tempering; Described first time tempering, second time tempering and third time tempering temperature be 540 DEG C, the time is 1.5h, and the tempering temperature of described 4th tempering is 550 DEG C, and the time is 1.5h.
Described sandblasting step is specially: open dedusting fan, back-up sand in sand-spraying pot, open air compressor machine, gear shaver is put on the table, to gear shaver surface sand-blasting, after sandblasting, again carries out dust removal process, gear shaver is put into rust protection liquid, rust protection liquid temperature is 85 DEG C, soaks 15 minutes, by air-dry for the gear shaver soaked.
Suspending equipment includes reversal of the natural order of things framework 11, described reversal of the natural order of things framework 11 comprises panel 12 and backboard 13, described hanging frame center is provided with fixing guide pillar 14, described fixing guide pillar 14 one end is connected with inside the backboard 13 of reversal of the natural order of things framework 11, unsettled panel 12 direction being arranged on reversal of the natural order of things framework 11 of the other end of described fixing guide pillar 14, centered by described fixing guide pillar 14, the holding tank 15 of annular is also provided with between fixing guide pillar 14 and the front of reversal of the natural order of things framework 11, reversal of the natural order of things structure is provided with above described reversal of the natural order of things framework 11, also fixed sturcture is provided with on described holding tank 15 surface.
The panel 12 of reversal of the natural order of things framework 11 comprises top panel 16 and lower panel 17, and the lower surface of described top panel 16 and the upper surface correspondence of lower panel 17 are arranged, and two panels 12 contacts.The junction of top panel 16 and lower panel 17 is also provided with locking mechanism 18, and described locking mechanism 18 is the snap lock of card slot type or is bolt-type locking.Reversal of the natural order of things structure for hanging upside down link 19, described in hang upside down the upper surface that link 19 is arranged on top panel 16.Fixed sturcture comprises the point of fixity 110 being arranged on top panel 16 and lower panel 17, is provided with fixing chain 111 between described two point of fixity 110, and two point of fixity 110 are walked around at described fixing chain 111 two ends respectively, and described fixing chain 111 strides across unsettled one end of fixing guide pillar 14.Top panel 16 is provided with at least one point of fixity 110, and lower panel 17 is provided with at least one point of fixity 110, and point of fixity 110 quantity in described two panels 12 is identical.
Suspending equipment passes through the Structure composing of panel 12 and backboard 13 suspending equipment, the structure of such combined is convenient to the maintenance replacing of suspending equipment, and after the fixed sturcture arranged on suspending equipment can ensure that gear shaver is placed on holding tank 15, can not drop from holding tank 15, make gear shaver when processing, safer, there will not be unforeseen circumstances.Suspending equipment is provided with locking latches between top panel 16 and lower panel 17, two panels 12 are fixed together by locking latches, when not needing to use, then can open locking latches and top panel 16 and lower panel 17 are separated, facilitate maintenance and the transport of suspending equipment.Complete fixing gear shaver by the structure of fixing chain 111, structure is simple, fixed function is excellent and cost is low, is convenient to apply on a large scale.
Tempering basket comprises basket 21, described basket 21 upper end is provided with suspension hook 22, the bottom of described basket 21 is provided with base 23, described base 23 is vertically provided with columniform column 24, before described basket 21, after, left, right four faces are provided with arc convex 25, the bottom of described arc convex 25 is connected with bottom basket 21, the top of described arc convex 25 is connected with the edge of basket 21 upper end, the bottom width of described arc convex 25 is greater than the top width of arc convex 25, described arc convex 25 is evenly distributed with multiple aperture 26, inside and outside through by basket 21 of described aperture 26, the diameter of described aperture 26 is 2-10mm.The length of described basket 21 is 600-800mm, and wide is 450-530mm, is highly 550-650 mm.Described suspension hook 22 is distributed in basket 21 upper end, and described suspension hook 22 is at least two.Multiple base 23 is disposed with bottom described basket 21.The bottom even of described basket 21 is distributed with multiple aperture 26.The height of described tempering basket inner column 24 is 150-450mm.Tempering basket four inwalls on be provided with arc convex 25, arc convex 25 is provided with through hole, the outside that the heat in inner portion can be delivered to tempering basket by these through holes is as required distributed, and first heat can disperse by these apertures 26, avoid common tempering basket when tempering, overall heat excessive velocities, the gear shaver impact treating tempering is too strong, make gear shaver also avoid occurring the situations such as crackle, and also enhance the intensity of gear shaver.The bottom of tempering basket please be provided with multiple base 23, multiple base 23 can be placed multiple gear shaver simultaneously and carry out temper, adds the efficiency of work.
Illustrate only the structure of left and right two arc convex in accompanying drawing, the actual structure that also there are front and back two arc convex, its shape is identical with left and right two arc convex structure, does not just draw at this patent.
Embodiment 2
A kind of gear shaver thermal treatment process, comprises the steps: gear shaver hanging, quenching, quenching inspection, gradient cooling, cleaning, tempering, inspection, cleaning, sandblasting, antirust and produce;
Described gear shaver hanging refers to and is positioned in suspending equipment by gear shaver, and suspending equipment is put into quench vessel, and described quench vessel is built with case hardening salt, and described suspending equipment submerges in case hardening salt.
When suspending equipment submerges after to case hardening salt, the salt face of described gear shaver distance case hardening salt is L1, the span of described L1 is for being greater than 70mm, during described thermocouple measuring temperature, thermopair is placed in case hardening salt, the salt face of described thermopair top distance case hardening salt is L2, and the span of described L2 is 150mm.
In described quenching Step, first carry out classification preheating, then Quench heating is carried out to the gear shaver after classification preheating; The temperature of described Quench heating is 1215 DEG C, and gear shaver hardness is HRC64, and gear shaver thickness is 50mm, and the Quench heating time is 230S; The time of described classification preheating is 2 times of the Quench heating time;
The described gradient cooling time is identical with the Quench heating time, the isothermal time of described gradient cooling 30 minutes.
Described tempering step adopts tempering basket and tempering stove, gear shaver is put as in tempering basket, again tempering basket is put into tempering stove, tempering salt is provided with in tempering stove, the salt face of described tempering basket distance case hardening salt is L3, the span of described L3 is for being greater than 70mm, during described thermocouple measuring temperature, thermopair is placed in tempering salt, the salt face of described thermopair top distance tempering salt is L4, the value of described L4 is 500mm, and described tempering basket is L5 to the furnace bottom of tempering stove, and the value of described L5 is 200mm.
Described tempering step comprises four tempering, and first time tempering is carried out in 8 hours after quenching checking procedure terminates, and follow-up tempering is all carry out when gear shaver is cooled to room temperature after again, in drawing process, adopts low temperature to enter Slow cooling after stove, slowly intensification, tempering; Described first time tempering, second time tempering and third time tempering temperature be 540 DEG C, the time is 1.5h, and the tempering temperature of described 4th tempering is 550 DEG C, and the time is 1.5h.
Described sandblasting step is specially: open dedusting fan, back-up sand in sand-spraying pot, open air compressor machine, gear shaver is put on the table, to gear shaver surface sand-blasting, after sandblasting, again carries out dust removal process, gear shaver is put into rust protection liquid, rust protection liquid temperature is 75 DEG C, soaks 25 minutes, by air-dry for the gear shaver soaked.
Suspending equipment includes reversal of the natural order of things framework 11, described reversal of the natural order of things framework 11 comprises panel 12 and backboard 13, described hanging frame center is provided with fixing guide pillar 14, described fixing guide pillar 14 one end is connected with inside the backboard 13 of reversal of the natural order of things framework 11, unsettled panel 12 direction being arranged on reversal of the natural order of things framework 11 of the other end of described fixing guide pillar 14, centered by described fixing guide pillar 14, the holding tank 15 of annular is also provided with between fixing guide pillar 14 and the front of reversal of the natural order of things framework 11, reversal of the natural order of things structure is provided with above described reversal of the natural order of things framework 11, also fixed sturcture is provided with on described holding tank 15 surface.
The panel 12 of reversal of the natural order of things framework 11 comprises top panel 16 and lower panel 17, and the lower surface of described top panel 16 and the upper surface correspondence of lower panel 17 are arranged, and two panels 12 contacts.The junction of top panel 16 and lower panel 17 is also provided with locking mechanism 18, and described locking mechanism 18 is the snap lock of card slot type or is bolt-type locking.Reversal of the natural order of things structure for hanging upside down link 19, described in hang upside down the upper surface that link 19 is arranged on top panel 16.Fixed sturcture comprises the point of fixity 110 being arranged on top panel 16 and lower panel 17, is provided with fixing chain 111 between described two point of fixity 110, and two point of fixity 110 are walked around at described fixing chain 111 two ends respectively, and described fixing chain 111 strides across unsettled one end of fixing guide pillar 14.Top panel 16 is provided with at least one point of fixity 110, and lower panel 17 is provided with at least one point of fixity 110, and point of fixity 110 quantity in described two panels 12 is identical.
Suspending equipment passes through the Structure composing of panel 12 and backboard 13 suspending equipment, the structure of such combined is convenient to the maintenance replacing of suspending equipment, and after the fixed sturcture arranged on suspending equipment can ensure that gear shaver is placed on holding tank 15, can not drop from holding tank 15, make gear shaver when processing, safer, there will not be unforeseen circumstances.Suspending equipment is provided with locking latches between top panel 16 and lower panel 17, two panels 12 are fixed together by locking latches, when not needing to use, then can open locking latches and top panel 16 and lower panel 17 are separated, facilitate maintenance and the transport of suspending equipment.Complete fixing gear shaver by the structure of fixing chain 111, structure is simple, fixed function is excellent and cost is low, is convenient to apply on a large scale.
Tempering basket comprises basket 21, described basket 21 upper end is provided with suspension hook 22, the bottom of described basket 21 is provided with base 23, described base 23 is vertically provided with columniform column 24, before described basket 21, after, left, right four faces are provided with arc convex 25, the bottom of described arc convex 25 is connected with bottom basket 21, the top of described arc convex 25 is connected with the edge of basket 21 upper end, the bottom width of described arc convex 25 is greater than the top width of arc convex 25, described arc convex 25 is evenly distributed with multiple aperture 26, inside and outside through by basket 21 of described aperture 26, the diameter of described aperture 26 is 2-10mm.The length of described basket 21 is 600-800mm, and wide is 450-530mm, is highly 550-650 mm.Described suspension hook 22 is distributed in basket 21 upper end, and described suspension hook 22 is at least two.Multiple base 23 is disposed with bottom described basket 21.The bottom even of described basket 21 is distributed with multiple aperture 26.The height of described tempering basket inner column 24 is 150-450mm.Tempering basket four inwalls on be provided with arc convex 25, arc convex 25 is provided with through hole, the outside that the heat in inner portion can be delivered to tempering basket by these through holes is as required distributed, and first heat can disperse by these apertures 26, avoid common tempering basket when tempering, overall heat excessive velocities, the gear shaver impact treating tempering is too strong, make gear shaver also avoid occurring the situations such as crackle, and also enhance the intensity of gear shaver.The bottom of tempering basket please be provided with multiple base 23, multiple base 23 can be placed multiple gear shaver simultaneously and carry out temper, adds the efficiency of work.
Illustrate only the structure of left and right two arc convex in accompanying drawing, the actual structure that also there are front and back two arc convex, its shape is identical with left and right two arc convex structure, does not just draw at this patent.
Embodiment 3
A kind of gear shaver thermal treatment process, comprises the steps: gear shaver hanging, quenching, quenching inspection, gradient cooling, cleaning, tempering, inspection, cleaning, sandblasting, antirust and produce;
Described gear shaver hanging refers to and is positioned in suspending equipment by gear shaver, and suspending equipment is put into quench vessel, and described quench vessel is built with case hardening salt, and described suspending equipment submerges in case hardening salt.
When suspending equipment submerges after to case hardening salt, the salt face of described gear shaver distance case hardening salt is L1, the span of described L1 is for being greater than 80mm, during described thermocouple measuring temperature, thermopair is placed in case hardening salt, the salt face of described thermopair top distance case hardening salt is L2, and the span of described L2 is 200mm.
In described quenching Step, first carry out classification preheating, then Quench heating is carried out to the gear shaver after classification preheating; The temperature of described Quench heating is 1200 DEG C, and gear shaver hardness is HRC65, and gear shaver thickness is 35mm, and the Quench heating time is 270S; The time of described classification preheating is 2 times of the Quench heating time;
The described gradient cooling time is identical with the Quench heating time, and the isothermal time of described gradient cooling is 25 minutes.
Described tempering step adopts tempering basket and tempering stove, gear shaver is put as in tempering basket, again tempering basket is put into tempering stove, tempering salt is provided with in tempering stove, the salt face of described tempering basket distance case hardening salt is L3, the span of described L3 is for being greater than 80mm, during described thermocouple measuring temperature, thermopair is placed in tempering salt, the salt face of described thermopair top distance tempering salt is L4, the span of described L4 is 525mm, and described tempering basket is L5 to the furnace bottom of tempering stove, and the span of described L5 is 175mm.
Described tempering step comprises four tempering, and first time tempering is carried out in 8 hours after quenching checking procedure terminates, and follow-up tempering is all carry out when gear shaver is cooled to room temperature after again, in drawing process, adopts low temperature to enter Slow cooling after stove, slowly intensification, tempering; Described first time tempering, second time tempering and third time tempering temperature be 540 DEG C, the time is 1.5h, and the tempering temperature of described 4th tempering is 550 DEG C, and the time is 1.5h.
Described sandblasting step is specially: open dedusting fan, back-up sand in sand-spraying pot, open air compressor machine, gear shaver is put on the table, to gear shaver surface sand-blasting, after sandblasting, again carries out dust removal process, gear shaver is put into rust protection liquid, rust protection liquid temperature is 80 DEG C, soaks 20 minutes, by air-dry for the gear shaver soaked.
Suspending equipment includes reversal of the natural order of things framework 11, described reversal of the natural order of things framework 11 comprises panel 12 and backboard 13, described hanging frame center is provided with fixing guide pillar 14, described fixing guide pillar 14 one end is connected with inside the backboard 13 of reversal of the natural order of things framework 11, unsettled panel 12 direction being arranged on reversal of the natural order of things framework 11 of the other end of described fixing guide pillar 14, centered by described fixing guide pillar 14, the holding tank 15 of annular is also provided with between fixing guide pillar 14 and the front of reversal of the natural order of things framework 11, reversal of the natural order of things structure is provided with above described reversal of the natural order of things framework 11, also fixed sturcture is provided with on described holding tank 15 surface.
The panel 12 of reversal of the natural order of things framework 11 comprises top panel 16 and lower panel 17, and the lower surface of described top panel 16 and the upper surface correspondence of lower panel 17 are arranged, and two panels 12 contacts.The junction of top panel 16 and lower panel 17 is also provided with locking mechanism 18, and described locking mechanism 18 is the snap lock of card slot type or is bolt-type locking.Reversal of the natural order of things structure for hanging upside down link 19, described in hang upside down the upper surface that link 19 is arranged on top panel 16.Fixed sturcture comprises the point of fixity 110 being arranged on top panel 16 and lower panel 17, is provided with fixing chain 111 between described two point of fixity 110, and two point of fixity 110 are walked around at described fixing chain 111 two ends respectively, and described fixing chain 111 strides across unsettled one end of fixing guide pillar 14.Top panel 16 is provided with at least one point of fixity 110, and lower panel 17 is provided with at least one point of fixity 110, and point of fixity 110 quantity in described two panels 12 is identical.
Suspending equipment passes through the Structure composing of panel 12 and backboard 13 suspending equipment, the structure of such combined is convenient to the maintenance replacing of suspending equipment, and after the fixed sturcture arranged on suspending equipment can ensure that gear shaver is placed on holding tank 15, can not drop from holding tank 15, make gear shaver when processing, safer, there will not be unforeseen circumstances.Suspending equipment is provided with locking latches between top panel 16 and lower panel 17, two panels 12 are fixed together by locking latches, when not needing to use, then can open locking latches and top panel 16 and lower panel 17 are separated, facilitate maintenance and the transport of suspending equipment.Complete fixing gear shaver by the structure of fixing chain 111, structure is simple, fixed function is excellent and cost is low, is convenient to apply on a large scale.
Tempering basket comprises basket 21, described basket 21 upper end is provided with suspension hook 22, the bottom of described basket 21 is provided with base 23, described base 23 is vertically provided with columniform column 24, before described basket 21, after, left, right four faces are provided with arc convex 25, the bottom of described arc convex 25 is connected with bottom basket 21, the top of described arc convex 25 is connected with the edge of basket 21 upper end, the bottom width of described arc convex 25 is greater than the top width of arc convex 25, described arc convex 25 is evenly distributed with multiple aperture 26, inside and outside through by basket 21 of described aperture 26, the diameter of described aperture 26 is 2-10mm.The length of described basket 21 is 600-800mm, and wide is 450-530mm, is highly 550-650 mm.Described suspension hook 22 is distributed in basket 21 upper end, and described suspension hook 22 is at least two.Multiple base 23 is disposed with bottom described basket 21.The bottom even of described basket 21 is distributed with multiple aperture 26.The height of described tempering basket inner column 24 is 150-450mm.Tempering basket four inwalls on be provided with arc convex 25, arc convex 25 is provided with through hole, the outside that the heat in inner portion can be delivered to tempering basket by these through holes is as required distributed, and first heat can disperse by these apertures 26, avoid common tempering basket when tempering, overall heat excessive velocities, the gear shaver impact treating tempering is too strong, make gear shaver also avoid occurring the situations such as crackle, and also enhance the intensity of gear shaver.The bottom of tempering basket please be provided with multiple base 23, multiple base 23 can be placed multiple gear shaver simultaneously and carry out temper, adds the efficiency of work.
Illustrate only the structure of left and right two arc convex in accompanying drawing, the actual structure that also there are front and back two arc convex, its shape is identical with left and right two arc convex structure, does not just draw at this patent.
Claims (3)
1. a gear shaver thermal treatment process, is characterized in that, comprises the steps: gear shaver hanging, quenching, quenching inspection, gradient cooling, cleaning, tempering, inspection, cleaning, sandblasting, antirust and produce;
Described gear shaver hanging refers to and is positioned in suspending equipment by gear shaver, and suspending equipment is put into quench vessel, and described quench vessel is built with case hardening salt, and described suspending equipment submerges in case hardening salt;
When suspending equipment submerges after to case hardening salt, the salt face of described gear shaver distance case hardening salt is L1, the span of described L1 is for being greater than 50mm, during thermocouple measuring temperature, thermopair is placed in case hardening salt, the salt face of described thermopair top distance case hardening salt is L2, and the span of described L2 is 150-230mm;
In described quenching Step, first carry out classification preheating, then Quench heating is carried out to the gear shaver after classification preheating; The temperature of described Quench heating is 1190-1215 DEG C, and gear shaver hardness is HRC64-66, and gear shaver thickness is 20-50mm, and the Quench heating time is 230-305S; The time of described classification preheating is 2 times of the Quench heating time;
The described gradient cooling time is identical with the Quench heating time, and the isothermal time of described gradient cooling is 20-30 minute;
Described tempering step adopts tempering basket and tempering stove, gear shaver is put into tempering basket, again tempering basket is put into tempering stove, tempering salt is provided with in tempering stove, the salt face of described tempering basket distance case hardening salt is L3, the span of described L3 is for being greater than 50mm, during described thermocouple measuring temperature, thermopair is placed in tempering salt, the salt face of described thermopair top distance tempering salt is L4, the span of described L4 is 500-550mm, and described tempering basket is L5 to the furnace bottom of tempering stove, and the span of described L5 is 150-200mm;
Described tempering step comprises four tempering, and first time tempering is carried out in 8 hours after quenching checking procedure terminates, and follow-up tempering is all carry out when gear shaver is cooled to room temperature after again, in drawing process, adopts low temperature to enter Slow cooling after stove, slowly intensification, tempering; Described first time tempering, second time tempering and third time tempering temperature be 540 DEG C, the time is 1.5h, and the tempering temperature of described 4th tempering is 550 DEG C, and the time is 1.5h;
Described sandblasting step is specially: open dedusting fan, back-up sand in sand-spraying pot, open air compressor machine, gear shaver is put on the table, to gear shaver surface sand-blasting, after sandblasting, again carries out dust removal process, gear shaver is put into rust protection liquid, rust protection liquid temperature is 75-85 DEG C, soaks 15-25 minute, by air-dry for the gear shaver soaked;
Described suspending equipment includes reversal of the natural order of things framework (11), described reversal of the natural order of things framework (11) comprises panel (12) and backboard (13), described reversal of the natural order of things framework (11) center is provided with fixing guide pillar (14), described fixing guide pillar (14) one end is connected with backboard (13) inner side of reversal of the natural order of things framework (11), unsettled panel (12) direction being arranged on reversal of the natural order of things framework (11) of the other end of described fixing guide pillar (14), centered by described fixing guide pillar (14), the holding tank (15) of annular is also provided with between fixing guide pillar (14) and the front of reversal of the natural order of things framework (11), described reversal of the natural order of things framework (11) top is provided with reversal of the natural order of things structure, also fixed sturcture is provided with on described holding tank (15) surface,
Tempering basket comprises basket (21), described basket (21) upper end is provided with suspension hook (22), the bottom of described basket (21) is provided with base (23), described base (23) is vertically provided with columniform column (24), before described basket (21), after, left, right four faces are provided with arc convex (25), the bottom of described arc convex (25) is connected with basket (21) bottom, the top of described arc convex (25) is connected with the edge of basket (21) upper end, the bottom width of described arc convex (25) is greater than the top width of arc convex (25), described arc convex (25) is evenly distributed with multiple aperture (26), described aperture (26) is inside and outside through by basket (21), the diameter of described aperture (26) is 2-10mm.
2. gear shaver thermal treatment process according to claim 1, it is characterized in that: the panel (12) of described reversal of the natural order of things framework (11) comprises top panel (16) and lower panel (17), the lower surface of described top panel (16) and the upper surface correspondence of lower panel (17) are arranged, and two panels contacts; The junction of described top panel (16) and lower panel (17) is also provided with locking mechanism (18), the snap lock that described locking mechanism (18) is card slot type or be bolt-type locking; Described reversal of the natural order of things structure for hanging upside down link (19), described in hang upside down the upper surface that link (19) is arranged on top panel (16); Described fixed sturcture comprises the point of fixity (110) being arranged on top panel (16) and lower panel (17), fixing chain (111) is provided with between described two point of fixity (110), two point of fixity (110) are walked around at described fixing chain (111) two ends respectively, and described fixing chain (111) strides across unsettled one end of fixing guide pillar (14); Described top panel (16) is provided with at least one point of fixity (110), and lower panel (17) is provided with at least one point of fixity (110), and point of fixity (110) quantity in described two panels (12) is identical.
3. gear shaver thermal treatment process according to claim 1, is characterized in that: the length of described basket (21) is 600-800mm, and wide is 450-530mm, is highly 550-650 mm; Described suspension hook (22) is distributed in basket (21) upper end, and described suspension hook (22) is at least two; Described basket (21) bottom is disposed with multiple base (23); The bottom even of described basket (21) is distributed with multiple aperture (26); The height of described tempering basket inner column (24) is 150-450mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310423888.5A CN103468914B (en) | 2013-09-17 | 2013-09-17 | Heat treatment process for gear shaving cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310423888.5A CN103468914B (en) | 2013-09-17 | 2013-09-17 | Heat treatment process for gear shaving cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103468914A CN103468914A (en) | 2013-12-25 |
| CN103468914B true CN103468914B (en) | 2015-01-21 |
Family
ID=49793953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310423888.5A Active CN103468914B (en) | 2013-09-17 | 2013-09-17 | Heat treatment process for gear shaving cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103468914B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175083A (en) * | 2014-07-29 | 2014-12-03 | 成都亨通兆业精密机械有限公司 | Turning tool manufacturing technology capable of reducing heat damage and facilitating processing |
| CN104191188A (en) * | 2014-07-29 | 2014-12-10 | 成都亨通兆业精密机械有限公司 | Cutting tool manufacturing method capable of conveniently reducing austenite residue |
| EP3854540A1 (en) * | 2020-01-23 | 2021-07-28 | Braun GmbH | Electric beard trimmer |
| EP3854538A1 (en) | 2020-01-23 | 2021-07-28 | Braun GmbH | Electric beard trimmer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004106574A1 (en) * | 2003-05-27 | 2004-12-09 | Koyo Seiko Co., Ltd. | Steel bar for steering rack, method for producing the same, and steering rack using the same |
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| JP2005163173A (en) * | 2003-11-14 | 2005-06-23 | Komatsu Ltd | Gear part and method of producing thereof |
| JP2006009145A (en) * | 2004-05-24 | 2006-01-12 | Komatsu Ltd | Rolling member and production method thereof |
| CN1804128A (en) * | 2005-11-30 | 2006-07-19 | 重庆长江轴承工业有限公司 | High carbon chromium bearing parts surface chemical heat-treatment process |
| CN1884592A (en) * | 2006-07-10 | 2006-12-27 | 北京时代新人轴承有限公司 | Stepped quenching process and its apparatus suitable for bainite and martensite quenching |
| CN101736189A (en) * | 2009-12-30 | 2010-06-16 | 大连乾宝铸铁有限公司 | High-frequency quenching gear and heating processing technology thereof |
-
2013
- 2013-09-17 CN CN201310423888.5A patent/CN103468914B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004106574A1 (en) * | 2003-05-27 | 2004-12-09 | Koyo Seiko Co., Ltd. | Steel bar for steering rack, method for producing the same, and steering rack using the same |
| JP2005163173A (en) * | 2003-11-14 | 2005-06-23 | Komatsu Ltd | Gear part and method of producing thereof |
| JP2006009145A (en) * | 2004-05-24 | 2006-01-12 | Komatsu Ltd | Rolling member and production method thereof |
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| CN1804128A (en) * | 2005-11-30 | 2006-07-19 | 重庆长江轴承工业有限公司 | High carbon chromium bearing parts surface chemical heat-treatment process |
| CN1884592A (en) * | 2006-07-10 | 2006-12-27 | 北京时代新人轴承有限公司 | Stepped quenching process and its apparatus suitable for bainite and martensite quenching |
| CN101736189A (en) * | 2009-12-30 | 2010-06-16 | 大连乾宝铸铁有限公司 | High-frequency quenching gear and heating processing technology thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103468914A (en) | 2013-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103468914B (en) | Heat treatment process for gear shaving cutter | |
| CN112442634B (en) | High-strength high-toughness large martensitic stainless steel ring forging and manufacturing method thereof | |
| CN103934648B (en) | The preparation method of the end cap in the antivibration bar assembly of nuclear power generating sets steam generator | |
| CN111676355B (en) | Online solution treatment process for austenitic stainless steel plate | |
| CN104525567A (en) | TA7 titanium alloy plate rolling method | |
| CN102434725A (en) | Method for manufacturing stainless steel seamless steel pipe with large caliber | |
| CN101168795A (en) | Carburization quenching method for round hole thin wall work-piece | |
| CN102699635A (en) | Liquid die-forging and rolling composite forming method for bearing ring piece | |
| CN102553920B (en) | Production method of aluminum tape for base of printing plate | |
| CN104498692B (en) | A kind of cold drawing steel tube core and preparation method thereof | |
| CN108277453B (en) | High-chromium micro-deformation cold stamping die surface chromium-vanadium co-infiltration treatment method | |
| CN102489503B (en) | Production method for cold-rolled wire-drawing steel belt and production method for wire-drawing roller applied to production | |
| CN103464459B (en) | Production method of titanium alloy U-shaped section | |
| CN111299481B (en) | Closed forging and pressing forming process for gear shaft of new energy automobile engine | |
| CN102465200A (en) | Manufacture method for seamless steel tube | |
| CN111974799A (en) | Production method of stainless steel strip with dotted matte DR surface | |
| CN101898200B (en) | Direct rolling method of zinc ingots | |
| CN108559828B (en) | Technological process of cold-rolled sheet production line | |
| CN103484791A (en) | Method for remanufacturing scrapped rollers to be qualified rollers | |
| CN108340123B (en) | Remanufacturing method for scrapped supporting roll of plate and strip mill | |
| Polyanskii et al. | Resource saving technology for metal semifinished product surface treatment | |
| CN103286529B (en) | The processing method of sprocket wheel | |
| CN112846013B (en) | Method for manufacturing forging blank for oil exploitation equipment | |
| CN102248251B (en) | Method for checking and finishing plate blank by using flame | |
| CN108202204B (en) | Spinning forming method of high-corrosion-resistance charging basket for ceramic core high-temperature high-pressure depoling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |