CN102002563B - Arranging structure of heaters on bearing-steel isothermal spheroidized annealing furnace - Google Patents
Arranging structure of heaters on bearing-steel isothermal spheroidized annealing furnace Download PDFInfo
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- CN102002563B CN102002563B CN2010105822593A CN201010582259A CN102002563B CN 102002563 B CN102002563 B CN 102002563B CN 2010105822593 A CN2010105822593 A CN 2010105822593A CN 201010582259 A CN201010582259 A CN 201010582259A CN 102002563 B CN102002563 B CN 102002563B
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Abstract
The invention discloses an arranging structure of heaters on a bearing-steel isothermal spheroidized annealing furnace. Bearing steel on an upper layer of driving roller set and a lower layer of driving roller set respectively is made to enter a hearth from a front furnace mouth and a rear furnace mouth and is conveyed in opposite directions, and the diagonal symmetrical arrangement of the heaters ensures the heating, insulating and isothermal treatment of the bearing steel on the upper layer of driving roller set and the lower layer of driving roller set and ensures the annealing treatment effect of the two layers of the bearing steel in the two directions. Accordingly, if high-temperature bearing steel to be conveyed out of the furnace mouth is conveyed on one of the upper layer of driving roller set and the lower layer of driving roller set, i.e. the high-temperature bearing steel is conveyed out of an isothermal chamber and made to enter an afterheat recovery exchanger chamber, normal-temperature bearing steel (also called as cold burden) which is just made to enter the furnace mouth is conveyed on the other layer of driving roller set, and the high-temperature bearing steel and the normal-temperature bearing steel can exchange heat so that the temperature of the normal-temperature bearing steel rises, the heat of the high-temperature bearing steel is recovered, and the heat needed for subsequently entering the isothermal chamber is reduced and energy is saved. In an intercooling chamber, a cooler can cool the high-temperature bearing steel discharged from a heating and insulating chamber while the high-temperature bearing steel and the lower-temperature bearing steel on the upper layer of driving roller set and the lower layer of driving roller set can exchange heat so that heat needed by lower-temperature bearing steel to subsequently enter the heating and insulating chamber is lowered, the energy is saved and heat waste is reduced.
Description
Technical field
The present invention relates to the arrangement of bearing steel isothermal spheroidizing furnace upper heater.
Background technology
On the existing bearing steel isothermal spheroidizing furnace, be provided with the individual layer live roll group that is used to transmit bearing steel in the burner hearth, bearing steel is on live roll; Pass through heating, insulation, air cooling, isothermal, slow cooling successively, accomplish the isothermal spheroidizing technology of bearing steel, wherein heat, insulation, isothermal process step need well heater; The layout of well heater is to influence very important factor of anneal effect, and existing well heater is arranged in the upper and lower of individual layer live roll group, and the bearing steel that annealing is accomplished reaches 550 ℃ usually; From burner hearth, after the output, also need cool off, below 550 ℃; Can not exert an influence to bearing steel material Spheroidizing Annealing tissue, but bearing steel still has very big thermal capacity, a large amount of heat energy will be wasted with the cooling of material; Not only waste heat energy, also contaminate environment.
Summary of the invention
The purpose of this invention is to provide double-layer double-direction bearing steel isothermal spheroidizing furnace upper heater and be the symmetric arrangement of diagonal lines; Diagonal lines symmetric arrangement through well heater; Guarantee the bearing steel anneal effect of lehre double-layer double-direction, also helped lehre to reach energy-conservation effect.
For achieving the above object; The technical scheme that the present invention adopts is: the arrangement of bearing steel isothermal spheroidizing furnace upper heater; The end had the body of heater of fire door before and after said bearing steel isothermal spheroidizing furnace was included in; Said body of heater inside has the burner hearth that is connected with the said fire door of end, front and back; In said burner hearth, be provided with the two-layer live roll group up and down that is used for the said bearing steel of horizontal feed between the fire door of end, said front and back; The said horizontal feed direction of two-layer live roll group up and down is opposite; Every layer of live roll group comprises a plurality of live rolls that are provided with separately along the fore-and-aft direction of said body of heater; The axial line homogeneous phase of said a plurality of live rolls is arranged in the same horizontal plane abreast, and perpendicular with the horizontal feed direction of said bearing steel, on the fore-and-aft direction of said body of heater; Said burner hearth is divided into the heat tracing chamber that is in central authorities, from the close-by examples to those far off is arranged on middle cold house, the isothermal chamber on both sides, said heat tracing chamber, the waste heat recovery heat exchange chamber that is used to keep supplying down the high-temperature bearing steel that comes out from said isothermal chamber on the two-layer live roll group and carries out heat exchange from the normal temperature bearing steel of fire door entering successively symmetrically; In said heat tracing chamber, the said isothermal chamber all above the live roll group of upper strata, lower floor's live roll group below be provided with well heater, said well heater is the diagonal lines symmetry according to the center of said heat tracing chamber, is provided with water cooler in the cold house in said; Said water cooler is near one deck live roll group setting of the bearing steel that is used to accept to come out from said heat tracing chamber, away from one deck live roll group setting in addition.
Preferably, stretch into the fan blade that is useful on the blower fan that quickens heat exchange in the said waste heat recovery heat exchange chamber.
Preferably, be the diagonal lines symmetry at water cooler described in the said burner hearth according to the center of said heat tracing chamber.
Preferably; The fire door rear of fire door the place ahead of leading section, rearward end is provided with and is used for sending into bearing steel is perhaps seen bearing steel off from said fire door levels material roller platform to said fire door on the said body of heater; Said body of heater forward-and-rearward material roller platform is connected with the live roll group of equivalent layer mutually; Form material and transmit passage, the delivery direction that the said material of levels transmits passage is opposite.
Because the utilization of technique scheme, the present invention compared with prior art has advantage: this lehre can be handled bearing steel by double-layer double-direction, and two-layer up and down live roll group head bearing steel gets in the burner hearth from the front and back fire door respectively; Do rightabout transmission, the diagonal lines symmetric arrangement of well heater has guaranteed that heat tracing, the isothermal processes of two-layer live roll group head bearing steel are consistent up and down; Guaranteed the bearing steel anneal effect of double-layer double-direction,, promptly come out to get into the waste heat recovery heat exchange chamber from isothermal chamber if two-layer live roll group wherein transmits the high-temperature bearing steel that will see fire door off on one deck live roll group so up and down; What transmit on then other one deck live roll group is the normal temperature bearing steel (being called cold burden again) of just having sent into fire door; High-temperature bearing steel and normal temperature bearing steel can carry out heat exchange, and the normal temperature bearing steel heats up, and have reclaimed the heat of the high-temperature bearing steel that originally will slattern; And reduced the heat that follow-up entering isothermal chamber needs; Reach energy-conservation effect, in middle cold house, water cooler can cool off the high-temperature bearing steel that comes out from the heat tracing chamber; Also can carry out heat exchange between high-temperature bearing steel on the levels live roll group and the cryogenic bearing steel at this moment; Reclaimed the heat of high-temperature bearing steel, the cryogenic bearing steel has been heated up, reduced requirement the follow-up entering heat tracing of cryogenic bearing steel chamber institute heat requirement; Energy-conservation further, reduced the waste of heat.
Description of drawings
Accompanying drawing 1 is for having the synoptic diagram of lehre of the present invention, and wherein isothermal chamber, heat tracing chamber, levels material roller platform have all adopted the length elliptical technique of painting;
The temperature variation synoptic diagram of accompanying drawing 2 for having lehre of the present invention different process section in the bearing steel annealing process; Wherein solid line representes that bearing steel gets on the live roll group of upper strata from the rearward end fire door, and dotted line representes that bearing steel gets on lower floor's live roll group from the leading section fire door.
Embodiment
Come further to set forth the present invention below in conjunction with accompanying drawing.
Referring to shown in Figure 1, the bearing steel isothermal spheroidizing furnace, the end has the body of heater 1 of fire door 2 before and after being included in; Body of heater 1 inside has the burner hearth 3 that is connected with the fire door 2 of end, front and back, and bearing steel gets in the burner hearth 3, after the annealed processing from the fire door 2 of an end; From 2 outputs of the fire door of the other end, in Fig. 1, before viewer's left side is defined as; After the right side is defined as; In burner hearth 3, be provided with the two-layer live roll group 4 and 5 up and down that is used for horizontal feed bearing steel between the fire door 2 of end, front and back, fire door 2 rears of fire door 2 the place aheads of leading section, rearward end are provided with levels material roller platform 6 and 7 on the body of heater 1, and this levels material roller platform 6 and 7 is used for sending into bearing steel or seeing bearing steel off from fire door to fire door 2; Body of heater 1 forward-and-rearward upper layer substance material roller platform 6 is connected with upper strata live roll group 4 mutually; Form upper materials and transmit passage, correspondingly, body of heater 1 forward-and-rearward lower floor material roller platform 7 and lower floor's live roll group 5 linkings mutually; Form lower floor's material and transmit passage, the delivery direction that the levels material transmits passage is opposite.By Fig. 1, in the front portion of body of heater 1, bearing steel gets into the fire door 2 from lower floor's material roller platform 7; Then the while is at the rear portion of body of heater 1; Bearing steel gets into the stove 2 from upper layer substance material roller platform 6, and the bearing steel that the levels material transmits in the passage is done to move in opposite directions, carries out anneal.
In Fig. 1, every layer of live roll group 4 or 5 comprises a plurality of live rolls that are provided with separately along the fore-and-aft direction of body of heater 1, and the axial line homogeneous phase of these a plurality of live rolls is arranged in the same horizontal plane abreast, and perpendicular with the horizontal feed direction of bearing steel.
On the fore-and-aft direction of body of heater 1; Burner hearth 3 is divided into the heat tracing chamber 14 that is in central authorities, from the close-by examples to those far off is arranged on middle cold house 13, isothermal chamber 12, the waste heat recovery heat exchange chamber 11 on both sides, said heat tracing chamber successively symmetrically; In heat tracing chamber 14, the isothermal chamber 12 all above the upper strata live roll group 4, lower floor's live roll group 5 below be provided with well heater 8; This well heater 8 can adopt the burner of torch firing flame; Perhaps adopt electrical heating wire, well heater 8 is the diagonal lines symmetry according to the center of heat tracing chamber 14 in burner hearth 3, is provided with water cooler 9 in the middle cold house 13; This water cooler 9 is near one deck live roll group setting of the bearing steel that is used to accept to come out from heat tracing chamber 14, away from one deck live roll group setting in addition.Stretch into the fan blade 10 that is useful on the blower fan that quickens heat exchange in the waste heat recovery heat exchange chamber 11, this fan blade 10 is used to keep supplying down the high-temperature bearing steel that comes out from isothermal chamber 12 on the two-layer live roll group and carries out heat exchange from the normal temperature bearing steel of fire door 2 entering.
But the lehre double-layer double-direction among Fig. 1 transmits material continuously, carries out anneal, and Fig. 2 has shown the temperature variation synoptic diagram of different process section in the lehre; This different process section is followed successively by waste heat recovery heat exchange chamber 11, isothermal chamber 12, middle cold house 13, heat tracing chamber 14, middle cold house 13, isothermal chamber 12, waste heat recovery heat exchange chamber 11, and in the front portion of body of heater 1, bearing steel gets in the burner hearth 3 through fire door 2 from lower floor's material roller platform 7;, at first get in the waste heat recovery heat exchange chamber 11 by transmitting behind the forward direction through lower floor's live roll group 5, will see off on the upper strata live roll group 4 on the bearing steel of fire door 2 and have great amount of heat; By the fan blade 10 of blower fan, in waste heat recovery heat exchange chamber 11 with lower floor live roll group 5 on normal temperature bearing steel (being called cold burden again) carry out heat exchange, the intensification of being heated of the bearing steel on lower floor's live roll group 5; Bearing steel cooling on the upper strata live roll group 4, the bearing steel on the upper strata live roll group 4 is carried through upper layer substance material roller platform 6 after fire door 2 outputs then; Can carry out heat exchange this moment with the cold burden on the lower floor's material roller platform 7 that will send in the fire door 2; Cold burden on lower floor's material roller platform 7 carries out preliminary heat treated, has further reclaimed the heat on the bearing steel on the upper layer substance material roller platform 6, at waste heat recovery heat exchange chamber 11; After bearing steel on lower floor's live roll group 5 is heated and heats up; Get into isothermal chamber 12,, the bearing steel on levels live roll group 4 and 5 all is incubated processing through the well heater in the isothermal chamber 12 8; Bearing steel on lower floor's live roll group 5 is after process isothermal chamber 12; The cold house 13 in the entering, and in middle cold house 13, water cooler 9 is arranged on the top of upper strata live roll group 4; Can the bearing steel that from heat tracing chamber 14, comes out on the upper strata live roll group 4 be cooled off through water cooler 9 like this; Bearing steel cooling on the upper strata live roll group 4, bearing steel on the upper strata live roll group 4 and the bearing steel on lower floor's live roll group 5 carry out heat exchange simultaneously, make that the bearing steel on lower floor's live roll group 5 heats up; Then the bearing steel on lower floor's live roll group 5 gets into heat tracing chamber 14; All carry out heat tracing through the bearing steel on 8 pairs of levels live rolls of the well heater in the heat tracing chamber 14 group 4 and 5 and handle, the bearing steel on lower floor's live roll group 5 is behind process heat tracing chamber 14, and the cold house 13 in the entering; The water cooler 9 of cold house 13 is arranged on the below of lower floor's live roll group 5 in this moment; Can the bearing steel on lower floor's live roll group 5 be cooled off through water cooler 9, the bearing steel cooling on lower floor's live roll group 5, water cooler 9 is the diagonal lines symmetry with the center of heat tracing chamber 14 in burner hearth 3.Mention above, lehre is the transmission material of double-layer double-direction, promptly at the rear portion of body of heater 1; Bearing steel gets in the burner hearths 3 through fire door 2 from upper layer substance material roller platform 6, by upper strata live roll group 4 by after forward, like this; After bearing steel in middle cold house 13 on lower floor's live roll group 5 cooled, the bearing steel on lower floor's live roll group 5 can carry out heat exchange with the bearing steel on the upper strata live roll group 4, and the bearing steel on the upper strata live roll group 4 heats up; Bearing steel on the upper strata live roll group 4 is followed into heat tracing chamber 14, can get in the isothermal chamber 12, through the well heater in the isothermal chamber 12 8 after the bearing steel on lower floor's live roll group 5 therefrom comes out in the cold house 13; Bearing steel on levels live roll group 4 and 5 all is incubated processing; Bearing steel on lower floor's live roll group 5 can get into waste heat recovery heat exchange chamber 11 then, prepares output from the fire door 2 of body of heater 1 rearward end, in waste heat recovery heat exchange chamber 11; Fan blade 10 by blower fan; Normal temperature bearing steel (being called cold burden again) on high-temperature bearing steel on lower floor's live roll group 5 and the upper strata live roll group 4 carries out heat exchange, makes that just the normal temperature bearing steel on the upper strata live roll group 4 of fire door 2 inputs heats up, and the cooling of the high-temperature bearing steel on lower floor's live roll group 5; Reclaim heat; After bearing steel on lower floor's live roll group 5 is exported from the fire door 2 of body of heater 1 rearward end, transmit through lower floor's material roller platform 7, the bearing steel on lower floor's material roller platform 7 of annealed processing can be heat-treated with the bearing steel of preparation entering fire door 2 on the upper layer substance material roller platform 6; Further reclaimed the heat of the bearing steel on lower floor's material roller platform 7; With respect to the unidirectional lehre of individual layer, this double-layer double-direction lehre can be significantly energy-conservation, greatly reduced the waste of heat.
To sum up, this bearing steel isothermal spheroidizing furnace can be handled bearing steel by double-layer double-direction, and two-layer up and down live roll group head bearing steel gets in the burner hearth from the front and back fire door respectively; Do rightabout transmission, the diagonal lines symmetric arrangement of well heater has guaranteed that heat tracing, the isothermal processes of two-layer live roll group head bearing steel are consistent up and down; Guaranteed the bearing steel anneal effect of double-layer double-direction,, promptly come out to get into the waste heat recovery heat exchange chamber from isothermal chamber if two-layer live roll group wherein transmits the high-temperature bearing steel that will see fire door off on one deck live roll group so up and down; What transmit on then other one deck live roll group is the normal temperature bearing steel (being called cold burden again) of just having sent into fire door, and high-temperature bearing steel and normal temperature bearing steel can carry out heat exchange, and the normal temperature bearing steel heats up; Reclaim the heat of the high-temperature bearing steel that originally will slattern, and reduced the heat that follow-up entering isothermal chamber needs, reached energy-conservation effect; In middle cold house; Water cooler can cool off the high-temperature bearing steel that comes out from the heat tracing chamber, also can carry out heat exchange between high-temperature bearing steel on the levels live roll group and the cryogenic bearing steel at this moment, has reclaimed the heat of high-temperature bearing steel; The cryogenic bearing steel is heated up; Reduced requirement to the follow-up entering heat tracing of cryogenic bearing steel chamber institute heat requirement, energy-conservation further, reduced the waste of heat.
Claims (4)
1. the arrangement of bearing steel isothermal spheroidizing furnace upper heater; The end had the body of heater of fire door before and after said bearing steel isothermal spheroidizing furnace was included in; Said body of heater inside has the burner hearth that is connected with the said fire door of end, front and back; It is characterized in that: in said burner hearth, be provided with the two-layer live roll group up and down that is used for the said bearing steel of horizontal feed between the fire door of end, said front and back; The said horizontal feed direction of two-layer live roll group up and down is opposite; Every layer of live roll group comprises a plurality of live rolls that are provided with separately along the fore-and-aft direction of said body of heater; The axial line homogeneous phase of said a plurality of live rolls is arranged in the same horizontal plane abreast; And it is perpendicular with the horizontal feed direction of said bearing steel; On the fore-and-aft direction of said body of heater, said burner hearth is divided into the heat tracing chamber that is in central authorities, from the close-by examples to those far off is arranged on middle cold house, the isothermal chamber on both sides, said heat tracing chamber, the waste heat recovery heat exchange chamber that is used to keep supplying down the high-temperature bearing steel that comes out from said isothermal chamber on the two-layer live roll group and carries out heat exchange from the normal temperature bearing steel of fire door entering successively symmetrically, in said heat tracing chamber, the said isothermal chamber all above the live roll group of upper strata, lower floor's live roll group below be provided with well heater; Said well heater is the diagonal lines symmetry according to the center of said heat tracing chamber; Be provided with water cooler in the cold house in said, said water cooler is near one deck live roll group setting of the bearing steel that is used to accept to come out from said heat tracing chamber, away from one deck live roll group setting in addition.
2. the arrangement of well heater according to claim 1 is characterized in that: stretch into the fan blade that is useful on the blower fan that quickens heat exchange in the said waste heat recovery heat exchange chamber.
3. the arrangement of well heater according to claim 1 is characterized in that: be the diagonal lines symmetry at water cooler described in the said burner hearth according to the center of said heat tracing chamber.
4. the arrangement of well heater according to claim 1; It is characterized in that: the fire door rear of fire door the place ahead of leading section, rearward end is provided with and is used for sending into bearing steel is perhaps seen bearing steel off from said fire door levels material roller platform to said fire door on the said body of heater; Said body of heater forward-and-rearward material roller platform is connected with the live roll group of equivalent layer mutually; Form material and transmit passage, the delivery direction that the said material of levels transmits passage is opposite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105822593A CN102002563B (en) | 2010-12-10 | 2010-12-10 | Arranging structure of heaters on bearing-steel isothermal spheroidized annealing furnace |
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| CN2010105822593A CN102002563B (en) | 2010-12-10 | 2010-12-10 | Arranging structure of heaters on bearing-steel isothermal spheroidized annealing furnace |
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| CN102002563B true CN102002563B (en) | 2012-06-27 |
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| CN103898280A (en) * | 2012-12-28 | 2014-07-02 | 赫菲斯热处理系统江苏有限公司 | Residual-heat available roll-bar type rapid-cooling furnace |
| CN209522872U (en) * | 2018-12-04 | 2019-10-22 | 苏州中门子工业炉科技有限公司 | The double-deck isothermal spheroidizing Equipment for Heating Processing of bearing rod iron tubing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109465A (en) * | 1985-12-27 | 1987-07-01 | 沈阳市二三工厂 | A kind of energy-saving annealing process and annealing energy-saving furnace |
| CN101358275A (en) * | 2008-09-03 | 2009-02-04 | 杭州金舟电炉有限公司 | Upper layer heat exchange type continuous annealing furnace |
| CN201245685Y (en) * | 2008-09-03 | 2009-05-27 | 杭州金舟电炉有限公司 | Upper-lower layer heat exchange type continuous annealing furnace |
| CN201942706U (en) * | 2010-12-10 | 2011-08-24 | 苏州中门子科技有限公司 | Layout structure for heaters on bearing steel isothermal spheroidizing annealing furnace |
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- 2010-12-10 CN CN2010105822593A patent/CN102002563B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109465A (en) * | 1985-12-27 | 1987-07-01 | 沈阳市二三工厂 | A kind of energy-saving annealing process and annealing energy-saving furnace |
| CN101358275A (en) * | 2008-09-03 | 2009-02-04 | 杭州金舟电炉有限公司 | Upper layer heat exchange type continuous annealing furnace |
| CN201245685Y (en) * | 2008-09-03 | 2009-05-27 | 杭州金舟电炉有限公司 | Upper-lower layer heat exchange type continuous annealing furnace |
| CN201942706U (en) * | 2010-12-10 | 2011-08-24 | 苏州中门子科技有限公司 | Layout structure for heaters on bearing steel isothermal spheroidizing annealing furnace |
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