CN103074471B - Roller-type spheroidizing annealing production line and isothermal spheroidizing annealing method - Google Patents
Roller-type spheroidizing annealing production line and isothermal spheroidizing annealing method Download PDFInfo
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- CN103074471B CN103074471B CN201210585731.8A CN201210585731A CN103074471B CN 103074471 B CN103074471 B CN 103074471B CN 201210585731 A CN201210585731 A CN 201210585731A CN 103074471 B CN103074471 B CN 103074471B
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- 238000000137 annealing Methods 0.000 title claims abstract description 24
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- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 238000007599 discharging Methods 0.000 claims abstract description 31
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- 239000000463 material Substances 0.000 claims description 19
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Abstract
The invention relates to a roller-type spheroidizing annealing production line and an isothermal spheroidizing annealing method using the roller-type spheroidizing annealing production line. The roller-type spheroidizing annealing production line sequentially comprises a roller-type feeding table, a cooling device, a heating device, a roller-type discharging table and an upper computer control system, wherein the cooling device comprises a roller-type quick cooling furnace and a forced quick cooling chamber at the tail end of the roller-type quick cooling furnace; a workpiece conveying device is arranged inside the roller-type quick cooling furnace; and the workpiece conveying device has a double-layer structure and comprises an upper cold workpiece feeding device and a lower hot workpiece discharging device. The isothermal spheroidizing annealing method comprises the following steps: feeding, exchanging heat of a cold workpiece and a hot workpiece in the furnace, austenitizing the workpieces, performing isothermal treatment, cooling and outputting the workpieces, discharging and the like. The isothermal spheroidizing annealing method is wide in application, can be applied to spheroidizing annealing treatment of parts or raw materials on a large scale as well as isothermal normalizing treatment of the parts; and the roller-type spheroidizing annealing production line has the advantages of energy conservation, environment friendliness, small floor area, high production efficiency and the like.
Description
Technical field
The present invention relates to a kind of annular isothermal spheroidizing production line and use this production line to carry out the method for isothermal spheroidizing.
Background technology
Metal heat treatmet is placed in certain medium by metal works to be heated to suitable temperature, and keep certain hour in this temperature after, cool in different media with friction-motion speed again, controlled a kind of technique of its performance by the microstructure changing metal material surface or inside.Isothermal spheroidizing is the thermal treatment process that hypereutectoid steel (as bearing steel) starting material (bar, wire rod etc.) or part blank are conventional, hardness can be reduced on the one hand, improve cutting ability, for machining is prepared, to obtain the carefully spheroidized carbide of disperse on the other hand, do tissue for subsequent heat treatment (quenching, tempering) to prepare, to obtain good mechanical property after subsequent heat treatment, improve thermal treatment qualification rate.
The isothermal spheroidizing technique of hypereutectoid steel is as follows: (1) shove charge is warmed up to austenitizing temperature insulation, makes carbide dissolution; (2) cooling prevents Carbide Precipitation fast; (3) be as cold as slightly lower than Ar1 temperature isothermal, make Carbide Precipitation nodularization; (4) stove is as cold as room temperature or furnace cooling to certain lesser temps (as 300 DEG C) air cooling of coming out of the stove.Existing hypereutectoid steel Spheroidizing Annealing is many carries out in cycle stove, as car type furnace, and bell furnace etc.All carry out in same stove because all operation stages comprise heating, insulation, isothermal and cooling, therefore material is very long to the cycle of coming out of the stove from entering stove, inefficiency; In addition, existing stove does not possess fast cooling device, and therefore the rapid cooling that can not realize in technique causes the precipitation of carbide to be grown up, thus reduces nodularization effect.
Current thermal treatment equipment often can not utilize the waste heat after high-temperature heat treatment in work-piece cools process, is all generally furnace cooling or air cooling, sometimes needs to accelerate cooling by large-scale blower.So not only waste most of heat energy, and stove cooling workpiece needs to take portion of time simultaneously, the processed workpiece such as other workpiece need could add new workpiece after cooling come out of the stove completely, heat treatment furnace is not farthest utilized, the production technique cycle is long, production efficiency is low, thus causes production cost to increase.In addition, most of heat energy dissipation, in workshop, makes workshop temperature raise, has a strong impact on the Working environment of workman.
And existing heat-treatment production line also ubiquity that labour intensity is large, energy expenditure is many, fault multidimensional repaiies trouble, can not automatically be controlled and the shortcoming such as operation.
Summary of the invention
The object of the invention is to overcome the defect that prior art exists, provide a kind of production efficiency high, and can the roller bar type Spheroidizing Annealing production line of UTILIZATION OF VESIDUAL HEAT IN and isothermal spheroidizing method.
The technical scheme realizing the object of the invention is: a kind of roller bar type Spheroidizing Annealing production line, comprises roller bar type feeding platform, refrigerating unit, heating unit, roller bar type discharging platform and upper computer control system successively; Described refrigerating unit comprises the fast black furnace of roller bar type and is positioned at the pressure rapid cooling chamber of the fast black furnace end of roller bar type, workpiece transfer device is provided with in the fast black furnace of described roller bar type, described workpiece transfer device is bilayer structure, comprises the cold workpiece input unit in upper strata and lower floor's heated work pieces take-off equipment; Described heating unit comprises the rotary heating furnace and annular constant-temperature oven that are positioned at and force rapid cooling chamber both sides, and described rotary heating furnace pushes away chain with annular constant-temperature oven with the high temperature be provided with for promoting workpiece in the passage forcing rapid cooling chamber to be connected; Described rotary heating furnace and annular constant-temperature oven are by middle door assembly and force rapid cooling chamber isolated, and described middle door assembly can switch.
Technique scheme, described roller bar type rapid cooling stove rear and front end is respectively equipped with front lifting table and rear lifting table, and described front lifting table front end is also provided with vacuum lock air chamber, and described vacuum air-locked outdoor is also provided with pumped vacuum systems.
Technique scheme, described roller bar type feeding platform and roller bar type discharging platform are in " L " type, be provided with between described roller bar type feeding platform one end and roller bar type discharging platform one end and rotate Transition Materials platform, described rotation Transition Materials platform and the fast black furnace of roller bar type and vacuum lock air chamber are arranged on same straight line.
Technique scheme, described roller bar type rapid cooling furnace upper end is provided with multiple oil cooling air-circulating fan along body of heater length direction, and described roller bar type fast black furnace bottom is provided with multiple band fin water-cooled pipe type interchanger.
Technique scheme, described pressure rapid cooling chamber upper end is provided with cooling duct, and described cooling duct is connected with extraneous cooling blower.
Technique scheme; described rotary heating furnace and annular constant-temperature oven top are provided with multiple oil cooling air-circulating fan; described oil cooling air-circulating fan side is also provided with protective atmosphere inlet pipe, radiator tube and thermopair; described protective atmosphere inlet pipe, radiator tube and thermopair are all inserted in body of heater, and described thermopair is connected with outside temperature Controlling System.
Technique scheme, is provided with at the bottom of rotary furnace bottom described rotary heating furnace and annular constant-temperature oven, and side is provided with 1 ~ 3 access door, and at the bottom of described rotary furnace, inside is provided with rotary support.
The above-mentioned isothermal spheroidizing production line of a kind of employing carries out isothermal spheroidizing method, and the method comprises the following steps:
(1) feeding: by roller bar type feeding platform by pending workpiece transfer to roller bar type feeding platform end, rotate Transition Materials platform rotate to roller bar type feeding platform end and dock with it, receive the workpiece on roller bar type feeding platform, then rotation Transition Materials platform is rotated to the fast black furnace direction of roller bar type, it is made to dock with transmitting device, and by workpiece transfer on transporting rail;
(2) input in cold workpiece stove: cold workpiece enters vacuum lock air chamber through transporting rail, and workpiece transfer is transmitted to the fast black furnace upper strata of double-deck roll bar type by front lifting table; After workpiece all enters, vacuum lock air chamber fire door is closed, start vacuum pump and vacuumize;
(3) cold and hot workpiece thermal exchange in stove: cold workpiece is while being in the fast black furnace upper strata input of the roller bar type under vacuum state, lower floor exports through the heated work pieces of isothermal spheroidizing, utilize the heat of heated work pieces to carry out preheating to cold workpiece, the temperature after cold workpiece is preheated is 300 ~ 500 DEG C;
(4) austenitizing of workpiece: after cold workpiece arrives the fast black furnace end of double-deck roll bar type, through after lifting table quickly through pressure rapid cooling chamber, and push away to push in rotary heating furnace under the effect of chain at the high temperature of rotary heating furnace side and carry out heating austenitizing, and held for some time, the protective atmosphere simultaneously passing into nitrogen, methane or both mixtures in rotary heating furnace prevents workpiece oxidation and decarbonization;
(5) isothermal processes of workpiece: the workpiece after rotary heating furnace process pushes away chain by the high temperature of this side and pushes pressure rapid cooling chamber, push away chain by the high temperature of annular constant-temperature oven side again after being cooled to isothermal temperature workpiece is pushed annular constant-temperature oven to carry out isothermal processes, make carbide carry out precipitation nodularization, the protective atmosphere simultaneously passing into nitrogen, methane or both mixtures prevents workpiece oxidation and decarbonization;
(6) transmission in the cooling of processed heated work pieces and stove: the workpiece after isothermal spheroidizing process pushes away chain by the high temperature of this side and pushes pressure rapid cooling chamber, and enter rapidly the fast black furnace of double-deck roll bar type, by rear lifting table, processed Workpiece transfer is exported to the fast black furnace lower floor of double-deck roll bar type, cool in transmitting procedure, the energy simultaneously discharged is for heating the cold workpiece of upper strata input;
(7) output of processed workpiece: the heated work pieces of output is after the fast black furnace of double-deck roll bar type is cooled to certain temperature, front lifting table by workpiece transfer to vacuum lock air chamber, then rotation Transition Materials platform is rotated to vacuum lock air chamber direction, rotated to and roller bar type discharging platform abutting direction after receiving workpiece, and by workpiece transfer on roller bar type discharging platform;
(8) discharging: workpiece transmits on roller bar type discharging platform, and completes discharging work.
Technique scheme, whole piece isothermal spheroidizing production line runs through upper computer control system and controls.
After adopting technique scheme, the present invention has following positive effect:
(1) workpiece transfer of the present invention all adopts roller bar type to design, and controls the operation of integral production line by upper computer control system, and level of automation is high, significantly reduces labor strength, enhances productivity; Roller bar type rapid cooling furnaceman part transmitting device divides upper and lower two-layer, respectively pending cold workpiece and processed heated work pieces can be placed on the upper and lower, during heated work pieces cooling, the energy of release can carry out preheating to the cold workpiece in upper strata, preheating temperature can reach 300 ~ 500 DEG C, enter process furnace through the workpiece of preheating and carry out next thermal treatment, heating-up time can be reduced, save energy, cold workpiece directly rapid heating condition generation thermal stresses in process furnace can be avoided again, cause the defects such as workpiece cracking, distortion; Also improve the rate of cooling of heated work pieces simultaneously by thermal exchange, thus shorten process cycle, reduce production cost;
(2) the forward and backward lifting table that roller bar type rapid cooling stove rear and front end is arranged is convenient to the transfer up and down of workpiece, and without the need to being arranged respectively to the roller bar type feeding platform outside stove and roller bar type discharging platform be arranged to the cold workpiece input unit in body of heater and heated work pieces take-off equipment sustained height, namely the material of producing apparatus has been saved, can equipment volume be greatly reduced again, save and take up an area space; Vacuum lock air chamber is sealable furnace chamber, and is provided with pumped vacuum systems, after hot and cold workpiece all enters fast black furnace, vacuumizes fast black furnace, heated work pieces is cooled under vacuum conditions, can prevent surface oxidation decarburization;
(3) roller bar type feeding platform and roller bar type discharging platform are all in " L " type, can shorten production line length, reduce floor space; By rotating Transition Materials platform transfer workpiece between the fast black furnace three of roller bar type feeding platform, roller bar type discharging platform and roller bar type, make production line structure compacter;
(4) the oil cooling air-circulating fan that is provided with of the fast black furnace of roller bar type and finned water-cooled heat exchanger, oil cooling air-circulating fan is used for the pump circulation of furnace gas, promotes the heat exchange of hot and cold workpiece, improves heat exchange efficiency, shortens process cycle; Finned water-cooled pipe type interchanger strengthens the speed of cooling of heated work pieces, reaches the object of fast cooling;
(5) the present invention forces the cooling duct that rapid cooling chamber and upper end thereof are provided with, and can realize the quick cooling of workpiece, prevents the precipitation of carbide from growing up, thus improves nodularization effect;
(6) heating unit of the present invention comprises rotary heating furnace and annular constant-temperature oven two kinds, the heating of workpiece and isothermal can carry out in different stove, while a collection of work piece isothermal, also can heat another batch of workpiece, greatly can shorten process cycle, enhance productivity;
(7) rotary heating furnace and annular constant-temperature oven are provided with the effect can playing pump circulation to hot-fluid in stove and air-flow of oil cooling air-circulating fan, improve being heated evenly property of workpiece; The protective atmosphere of nitrogen, methane or both mixtures enters in body of heater by protective atmosphere inlet pipe, can prevent surface in workpiece heat, insulating process from occurring oxidation and decarbonization; Radiator tube is used for intensification, the heating of process furnace and constant-temperature oven and is incubated; The thermopair that the temperature control system be connected with the external world is connected can carry out thermometric at any time to in-furnace temperature, and regulates in-furnace temperature by temperature control system, gives security for obtaining the workpiece with good organization and performance;
(8) annular constant-temperature oven and process furnace also have at the bottom of rotary furnace, further increase being heated evenly property in heat treatment of workpieces process;
(9) the present invention is of many uses, can be used for part in enormous quantities or raw-material Spheroidizing Annealing process, also can be used for the isothermal normalizing process of part, and production line of the present invention also there are energy-conserving and environment-protective, take up an area little, production efficiency advantages of higher.
Accompanying drawing explanation
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is front view of the present invention;
Fig. 2 is vertical view of the present invention;
Fig. 3 is vertical view A-A face of the present invention sectional view;
In figure 1, roller bar type feeding platform; 2, refrigerating unit; 21, the fast black furnace of roller bar type; 21-1, front lifting table; 21-2, rear lifting table; 21-3, vacuum lock air chamber; 21-4, band fin water-cooled pipe type interchanger; 22, rapid cooling chamber is forced; 22-1, cooling duct; 3, heating unit; 31, rotary heating furnace; 32, annular constant-temperature oven; 33, high temperature pushes away chain; 4, roller bar type discharging platform; 5, upper computer control system; 6, workpiece transfer device; 61, cold workpiece input unit; 62, heated work pieces take-off equipment; 7, Transition Materials platform is rotated; 8, oil cooling air-circulating fan; 9, protective atmosphere inlet pipe; 10, radiator tube; 11, thermopair; 12, access door; 13, middle door assembly.
Embodiment
(embodiment 1)
See Fig. 1 to Fig. 3, the present invention comprises roller bar type feeding platform 1, refrigerating unit 2, heating unit 3, roller bar type discharging platform 4 successively and controls the upper computer control system 5 of whole piece streamline; Refrigerating unit 2 comprises the fast black furnace of roller bar type 21 and is positioned at the pressure rapid cooling chamber 22 of roller bar type fast black furnace 2 end, workpiece transfer device 6 is provided with in the fast black furnace 21 of roller bar type, workpiece transfer device 6 is bilayer structure, comprises the cold workpiece input unit 61 in upper strata and lower floor's heated work pieces take-off equipment 62.Roller bar type fast black furnace 21 rear and front end is respectively equipped with front lifting table 21-1 and rear lifting table 21-2, front lifting table 21-1 front end is also provided with vacuum lock air chamber 21-3, vacuum lock air chamber 21-3 is sealable furnace chamber, pumped vacuum systems is provided with in furnace chamber, after workpiece is carried completely, start pumped vacuum systems, workpiece can heat under vacuum conditions, prevents surface oxidation decarburization.
Preferably, roller bar type feeding platform 1 and roller bar type discharging platform 4, in " L " type, can shorten production line length, save floor occupying area; Be provided with between roller bar type feeding platform 1 one end and roller bar type discharging platform 4 one end and rotate Transition Materials platform 7, rotate Transition Materials platform 7 and arrange on the same line with the fast black furnace 21 of roller bar type and vacuum lock air chamber 21-3.
Preferably, roller bar type fast black furnace 21 upper end edge body of heater length direction is provided with multiple oil cooling air-circulating fan 8, and roller bar type fast black furnace 21 bottom is provided with multiple band fin water-cooled pipe type interchanger 21-4.
Preferably, force rapid cooling chamber 22 upper end to be provided with cooling duct 22-1, cooling duct 22-1 is connected with extraneous cooling blower.
Heating unit 3 comprises the rotary heating furnace 31 and annular constant-temperature oven 32 that are positioned at and force rapid cooling chamber 22 both sides, and described rotary heating furnace 31 pushes away chain 33 with annular constant-temperature oven 32 with the high temperature be provided with for promoting workpiece in the passage forcing rapid cooling chamber 22 to be connected; Rotary heating furnace 31 is isolated with pressure rapid cooling chamber 22 by middle door assembly 13 with annular constant-temperature oven 32, and middle door assembly 13 can switch.
Rotary heating furnace 31 and annular constant-temperature oven 32 top are provided with multiple oil cooling air-circulating fan 8; oil cooling air-circulating fan 31 side is also provided with protective atmosphere inlet pipe 9, radiator tube 10 and thermopair 11; protective atmosphere inlet pipe 9, radiator tube 10 and thermopair 11 are all inserted in body of heater, and thermopair 11 is connected with outside temperature Controlling System.
Preferably, be provided with at the bottom of rotary furnace bottom rotary heating furnace 31 and annular constant-temperature oven 32, at the bottom of rotary furnace, inside is provided with rotary support, can improve being heated evenly property of workpiece in stove, and side is respectively provided with 2 access doors 12, facilitates the maintenance examination of body of heater.
The invention still further relates to and a kind ofly adopt above-mentioned roller bar type Spheroidizing Annealing production line to carry out the method for isothermal spheroidizing, comprise the following steps:
(1) feeding: by roller bar type feeding platform 1 by pending workpiece transfer to roller bar type feeding platform 1 end, rotate Transition Materials platform 7 rotate to roller bar type feeding platform 1 end and dock with it, receive the workpiece on roller bar type feeding platform 1, then rotation Transition Materials platform 7 is rotated to roller bar type fast black furnace 21 direction, it is made to dock with transmitting device, and by workpiece transfer on transporting rail;
(2) input in cold workpiece stove: cold workpiece enters vacuum lock air chamber 21-3 through transporting rail, and workpiece transfer is transmitted to double-deck roll bar type fast black furnace 21 upper strata by front lifting table 21-1; After workpiece all enters, vacuum lock air chamber 21-3 fire door is closed, start vacuum pump and vacuumize;
(3) cold and hot workpiece thermal exchange in stove: cold workpiece is while being in the input of roller bar type fast black furnace 21 upper strata under vacuum state, lower floor exports through the heated work pieces of isothermal spheroidizing, utilize the heat of heated work pieces to carry out preheating to cold workpiece, the temperature after cold workpiece is preheated is 300 ~ 500 DEG C;
(4) austenitizing of workpiece: after cold workpiece arrives double-deck roll bar type fast black furnace 21 end, through after lifting table 21-2 quickly through pressure rapid cooling chamber 22, and push in rotary heating furnace 31 under the high temperature of rotary heating furnace 31 side pushes away the effect of chain 33 and carry out heating austenitizing, and held for some time, in rotary heating furnace 31, pass into protective atmosphere prevents workpiece oxidation and decarbonization simultaneously;
(5) isothermal processes of workpiece: the workpiece after rotary heating furnace 31 processes pushes away chain 33 by the high temperature of this side and pushes pressure rapid cooling chamber 22, push away chain 33 by the high temperature of annular constant-temperature oven 32 side again after being cooled to isothermal temperature workpiece is pushed annular constant-temperature oven 32 to carry out isothermal processes, make carbide carry out precipitation nodularization, pass into protective atmosphere simultaneously and prevent workpiece oxidation and decarbonization;
(6) transmission in the cooling of processed heated work pieces and stove: the workpiece after isothermal spheroidizing process pushes away chain 33 by the high temperature of this side and pushes and force rapid cooling chamber 22, and enter rapidly the fast black furnace 21 of double-deck roll bar type, by rear lifting table 21-2, processed Workpiece transfer is exported to double-deck roll bar type fast black furnace 21 lower floor, cool in transmitting procedure, the energy simultaneously discharged is for heating the cold workpiece of upper strata input;
(7) stove of processed workpiece is interior exports: the heated work pieces of output is after the fast black furnace 21 of double-deck roll bar type is cooled to certain temperature, front lifting table 21-1 by workpiece transfer to vacuum lock air chamber 21-3, then rotation Transition Materials platform 7 is rotated to vacuum lock air chamber 21-3 direction, rotated to and roller bar type discharging platform 4 abutting direction after receiving workpiece, and by workpiece transfer on roller bar type discharging platform 4;
(8) discharging: workpiece transmits on roller bar type discharging platform 4, and completes discharging work.
Preferably, whole piece isothermal spheroidizing production line runs through upper computer control system 5 and controls, and can be completely achieved automatization, considerably reduces labor strength, improve the working environment of workers, improve production efficiency, reduces production cost.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a roller bar type Spheroidizing Annealing production line, comprises roller bar type feeding platform (1), refrigerating unit (2), heating unit (3), roller bar type discharging platform (4) and upper computer control system (5) successively; Described refrigerating unit (2) comprises the fast black furnace of roller bar type (21) and is positioned at the pressure rapid cooling chamber (22) of the fast black furnace of roller bar type (2) end, workpiece transfer device (6) is provided with in the fast black furnace of described roller bar type (21), described workpiece transfer device (6) is bilayer structure, comprises the cold workpiece input unit (61) in upper strata and lower floor's heated work pieces take-off equipment (62); It is characterized in that: described heating unit (3) comprises the rotary heating furnace (31) and annular constant-temperature oven (32) that are positioned at and force rapid cooling chamber (22) both sides, described rotary heating furnace (31) pushes away chain (33) with annular constant-temperature oven (32) with the high temperature be provided with for promoting workpiece in the passage forcing rapid cooling chamber (22) to be connected; Described rotary heating furnace (31) is isolated with pressure rapid cooling chamber (22) by middle door assembly (13) with annular constant-temperature oven (32), and described middle door assembly (13) can switch.
2. roller bar type Spheroidizing Annealing production line according to claim 1, it is characterized in that: described roller bar type fast black furnace (21) rear and front end is respectively equipped with front lifting table (21-1) and rear lifting table (21-2), described front lifting table (21-1) front end is also provided with vacuum lock air chamber (21-3), and described vacuum lock air chamber (21-3) outside is provided with pumped vacuum systems.
3. roller bar type Spheroidizing Annealing production line according to claim 2, it is characterized in that: described roller bar type feeding platform (1) and roller bar type discharging platform (4) are in " L " type, be provided with between described roller bar type feeding platform (1) one end and roller bar type discharging platform (4) one end and rotate Transition Materials platform (7), described rotation Transition Materials platform (7) is arranged on the same line with the fast black furnace of roller bar type (21) and vacuum lock air chamber (21-3).
4. the roller bar type Spheroidizing Annealing production line according to claim 1,2 or 3, it is characterized in that: described roller bar type fast black furnace (21) upper end edge body of heater length direction is provided with multiple oil cooling air-circulating fan (8), and described roller bar type fast black furnace (21) bottom is provided with multiple band fin water-cooled pipe type interchanger (21-4).
5. roller bar type Spheroidizing Annealing production line according to claim 4, it is characterized in that: described pressure rapid cooling chamber (22) upper end is provided with cooling duct (22-1), and described cooling duct (22-1) is connected with extraneous cooling blower.
6. roller bar type Spheroidizing Annealing production line according to claim 1; it is characterized in that: described rotary heating furnace (31) and annular constant-temperature oven (32) top are provided with multiple oil cooling air-circulating fan (8); described oil cooling air-circulating fan (31) side is also provided with protective atmosphere inlet pipe (9), radiator tube (10) and thermopair (11); described protective atmosphere inlet pipe (9), radiator tube (10) and thermopair (11) are all inserted in body of heater, and described thermopair (11) is connected with outside temperature Controlling System.
7. roller bar type Spheroidizing Annealing production line according to claim 6, it is characterized in that: described rotary heating furnace (31) and annular constant-temperature oven (32) bottom are provided with at the bottom of rotary furnace, side is provided with 1 ~ 3 access door (12), and at the bottom of described rotary furnace, inside is provided with rotary support.
8. adopt roller bar type Spheroidizing Annealing production line as claimed in claim 7 to carry out an isothermal spheroidizing method, it is characterized in that: comprise the following steps:
(1) feeding: by roller bar type feeding platform (1) by pending workpiece transfer to roller bar type feeding platform (1) end, rotate Transition Materials platform (7) rotate to roller bar type feeding platform (1) end and dock with it, receive the workpiece on roller bar type feeding platform (1), then will rotate Transition Materials platform (7) and rotate to the fast black furnace of roller bar type (21) direction, it is made to dock with transmitting device, and by workpiece transfer on transporting rail;
(2) input in cold workpiece stove: cold workpiece enters vacuum lock air chamber (21-3) through transporting rail, and workpiece transfer is transmitted to the fast black furnace of double-deck roll bar type (21) upper strata by front lifting table (21-1); After workpiece all enters, vacuum lock air chamber (21-3) fire door is closed, start vacuum pump and vacuumize;
(3) cold and hot workpiece thermal exchange in stove: cold workpiece is while being in the input of the fast black furnace of roller bar type (21) upper strata under vacuum state, lower floor exports through the heated work pieces of isothermal spheroidizing, utilize the heat of heated work pieces to carry out preheating to cold workpiece, the temperature after cold workpiece is preheated is 300 ~ 500 DEG C;
(4) austenitizing of workpiece: after cold workpiece arrives double-deck roll bar type fast black furnace (21) end, through after lifting table (21-2) quickly through pressure rapid cooling chamber (22), and push in rotary heating furnace (31) under the high temperature of rotary heating furnace (31) side pushes away the effect of chain (33) and carry out heating austenitizing, and held for some time, the protective atmosphere simultaneously passing into nitrogen, methane or both mixtures in rotary heating furnace (31) prevents workpiece oxidation and decarbonization;
(5) isothermal processes of workpiece: the workpiece after rotary heating furnace (31) process pushes away chain (33) by the high temperature of this side and pushes pressure rapid cooling chamber (22), push away chain (33) by the high temperature of annular constant-temperature oven (32) side again after being cooled to isothermal temperature workpiece is pushed annular constant-temperature oven (32) to carry out isothermal processes, make carbide carry out precipitation nodularization, the protective atmosphere simultaneously passing into nitrogen, methane or both mixtures prevents workpiece oxidation and decarbonization;
(6) transmission in the cooling of processed heated work pieces and stove: the workpiece after isothermal spheroidizing process pushes away chain (33) by the high temperature of this side and pushes and force rapid cooling chamber (22), and enter rapidly the fast black furnace of double-deck roll bar type (21), by rear lifting table (21-2), processed Workpiece transfer is exported to the fast black furnace of double-deck roll bar type (21) lower floor, cool in transmitting procedure, the energy simultaneously discharged is for heating the cold workpiece of upper strata input;
(7) output of processed workpiece: the heated work pieces of output is after the fast black furnace of double-deck roll bar type (21) is cooled to certain temperature, front lifting table (21-1) by workpiece transfer to vacuum lock air chamber (21-3), then will rotate Transition Materials platform (7) and rotate to vacuum lock air chamber (21-3) direction, rotated to and roller bar type discharging platform (4) abutting direction after receiving workpiece, and by workpiece transfer on roller bar type discharging platform (4);
(8) discharging: workpiece in the upper transmission of roller bar type discharging platform (4), and completes discharging work.
9. isothermal spheroidizing method according to claim 8, is characterized in that: whole piece isothermal spheroidizing production line runs through upper computer control system (5) and controls.
Priority Applications (1)
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| CN104250679B (en) * | 2013-06-28 | 2016-08-10 | 苏州工业园区胜龙电炉制造有限公司 | Roller rod combined type normalizing annealing furnace |
| CN104785787A (en) * | 2015-04-29 | 2015-07-22 | 宁波依司特加热设备有限公司 | Powder metallurgy rapid cooling system |
| CN106191393A (en) * | 2015-05-08 | 2016-12-07 | 双立恒通新材料科技（淮安）有限公司 | A kind of novel three-stage non-oxidation continuous annealer |
| CN105385831B (en) * | 2015-12-17 | 2018-02-16 | 北京科技大学 | A kind of oblique milling ball milling steel ball UTILIZATION OF VESIDUAL HEAT IN annealing device |
| CN105385830B (en) * | 2015-12-17 | 2018-02-27 | 北京科技大学 | A kind of oblique milling ball-mill steel ball sealing closes the cold tempering integrated device of pot type control |
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| CN106834653B (en) * | 2017-02-23 | 2018-03-16 | 武汉理工大学 | A kind of bearing ring forging tissue fast spheroidizing annealing method based on controll cooling after forging |
| CN111332720B (en) * | 2020-03-30 | 2024-12-31 | 爱协林热处理系统(北京)有限公司 | Material tray storage method and equipment for continuous heat treatment production line |
| CN114561519A (en) * | 2022-03-17 | 2022-05-31 | 思博鲍尔(唐山)科技有限公司 | Isothermal normalizing system |
| CN114875216B (en) * | 2022-05-10 | 2024-08-20 | 上海汽车变速器有限公司 | Bevel gear spheroidizing annealing process and push rod furnace |
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| CN100419095C (en) * | 2006-04-18 | 2008-09-17 | 范本良 | U-shaped afterheat utilizing annealing furnace below roller |
| CN101363071B (en) * | 2008-09-27 | 2010-06-16 | 杭州金舟电炉有限公司 | Brilliant isothermal normalizing production system |
| CN201395616Y (en) * | 2009-03-27 | 2010-02-03 | 黄培 | Composite heat recycling type continuous equal-temperature spheroids annealing furnace |
| CN101831536A (en) * | 2010-05-28 | 2010-09-15 | 苏州工业园区胜龙电炉制造有限公司 | Isothermal annealing energy-saving furnace and isothermal annealing method thereof |
| CN101988144A (en) * | 2010-10-15 | 2011-03-23 | 杭州金舟电炉有限公司 | Practical sealed quick cooling chamber |
| CN102808069A (en) * | 2011-06-02 | 2012-12-05 | 苏州工业园区胜龙电炉制造有限公司 | Oversize heat recovery-type push disc-type wire continuously and isothermally-balling and annealing furnace |
| CN203112875U (en) * | 2012-12-28 | 2013-08-07 | 赫菲斯热处理系统江苏有限公司 | Roller type spheroidizing annealing production line |
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