CN103240275A - On-line heating device and heating method of magnesium alloy sheet warm rolling rollers - Google Patents
On-line heating device and heating method of magnesium alloy sheet warm rolling rollers Download PDFInfo
- Publication number
- CN103240275A CN103240275A CN201310177426XA CN201310177426A CN103240275A CN 103240275 A CN103240275 A CN 103240275A CN 201310177426X A CN201310177426X A CN 201310177426XA CN 201310177426 A CN201310177426 A CN 201310177426A CN 103240275 A CN103240275 A CN 103240275A
- Authority
- CN
- China
- Prior art keywords
- temperature
- heating furnace
- plate
- rolling
- heating
- 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.)
- Granted
Links
Images
Landscapes
- Metal Rolling (AREA)
Abstract
The invention discloses an on-line heating device and a heating method of magnesium alloy sheet warm rolling rollers. The on-line heating device is composed of a heating furnace, a positioning device and a temperature control module, the heating furnace is fixed on a rolling mill stand through the positioning device, and the temperature control module is used for detecting the temperature in the heating furnace and regulating heating power in real time. The heating method includes: firstly sealing preheating is performed on a working roller until the temperature on the surface of the working roller reaches a target value, and thermal insulation is performed; the heating device is positioned, and simultaneously all supporting rollers and the working roller are moved to the position where normal temperature rolling of magnesium alloy is performed; trial rolling is performed on magnesium alloy blanks to obtain the optimum temperature value; and finally normal rolling is started, and heating at the ideal temperature is achieved through feedback control. The structure of an existing roller does not need to be changed, and solid rollers with high rigidity and strong reliability can be used; a scheme that normal heating is performed after sealing preheating is adopted to achieve rapid heating of the rollers; and a temperature control strategy with double-target temperature is adopted to obtain the ideal roller surface temperature.
Description
Technical field
The invention belongs to sheet material warm-rolling equipment technical field, be specifically related to a kind of online heater and heating means for magnesium alloy plate warm-rolling roll.
Background technology
Magnesium alloy is a kind of modern lightweight structural metallic material, have that density is little, specific strength and the high characteristics of specific stiffness, and good electromagnetic wave shielding, damping shock absorption and machining property, have broad application prospects in fields such as Aero-Space, automobile and electronic products.China is magnesium resource big country, and reserves and former magnesium export volume all occupy first place in the world, but has the production technology backwardness of magnesium alloy plate and the section bar of high added value.At present, most of magnesium alloy products adopt casts especially extrusion process shaping, and the rolling technique of wrought magnesium alloy sheet material is still immature, has limited the Application of Magnesium scope.
One of difficult point of magnesium alloy plate warm-rolling technology is that the rolling temperature scope is narrower, if can not keep the temperature of roller surface, the magnesium plate will cool off rapidly and make the plasticity variation, cause the surface of the work crackle that rolls out and limit to be split and increase, and can't obtain desirable tissue and mechanical property.Therefore, generally want heated roll before rolling and in the operation of rolling.
Existing a kind of method is to utilize combustion heat source breaker roll surface directly to heat, and removes thermal source after reaching target temperature, is rolled again.Because roll constantly dispels the heat, between different blanks and the roll, even the diverse location of same compact material is all different with the contact temperature difference between the roll, and the structural homogenity of rolled plate is affected; And since will stop at set intervals rolling, heated roll again, rolling efficiency is low.
Chinese patent CN1745920A, CN101249512A disclose a kind of magnesium alloy plate roll roll centre heater respectively, and the two mode that all adopts the built-in heating rod of roll centre and roller that temperature-controlled box is set outward keeps the surface temperature of roll in the operation of rolling.Because the rigidity of hollow roll is lower than solid roller, the sand holes of roll bore area, pore bring out stress easily and concentrate poor reliability under the effect of downforce; And the size of roll endoporus is limited, and the efficiency of heating surface is not high.
Chinese patent CN202238896U discloses a kind of roll preheating device, is characterized in the resistance wire of roll periphery is divided into some segmentations in the axial direction, adopts several temperature measurers to detect the temperature of each segmented surface of roll.Yet, also needing roll change after adopting the heating of this device, operating efficiency is not high; And because the temperature of roller surface can't be controlled in the operation of rolling, thereby be difficult to guarantee the quality of product.
Summary of the invention
The purpose of this invention is to provide a kind of online heater of magnesium alloy plate warm-rolling roll and heating means, do not changing existing roll structure and need not on the basis of roll change, guarantee the temperature of roller surface in the operation of rolling, to obtain to have the magnesium alloy rolling plates of good tissue and mechanical property.The present invention is applicable to two rollers and multiple roll magnesium alloy plate warm-rolling milling train, is that example is introduced below with the four-high mill, and wherein four rollers comprise two backing rolls and two working rolls, and heating is divided into preheating and two stages of normal heating to working roll.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions:
The online heater of a kind of magnesium alloy plate warm-rolling roll, mainly formed by heating furnace 1, positioner 2 and temperature control module 3, described heating furnace 1 is fixed on the rolling-mill housing by positioner 2, and temperature control module 3 detects the internal temperature of heating furnace 1, and the real-time monitoring heating power;
Heating furnace main body 10 in the described heating furnace 1 is fixed on the heating furnace fixed disk 20, heating furnace fixed disk 20 is fixed on the rolling-mill housing, fixedly connected between elevating lever rotating disc 21 in the positioner 2 and the heating furnace fixed disk 20, last slip lid elevating lever 22 and following slip lid elevating lever 23 are connected with corresponding slide block respectively and embed in the chute 212 of elevating lever rotating disc 21, on the heating furnace under slip lid 11 and the heating furnace surface of slip lid 12 bearing is installed, fixedly connected with following slip lid elevating lever 23 with last slip lid elevating lever 22 respectively; Have the through hole of laying thermocouple passage 38 on the end heat shield 13 in the heating furnace 1, the both sides of top working roll 42 are installed plate entrance side thermocouple 36 and plate outlet side thermocouple 37 respectively, connect temperature conditioning unit 30 with plate entrance side heating element heater 34, plate outlet side heating element heater 35.The structure of the heater of bottom working roll 43 in like manner.
Described heating furnace 1 is made up of slip lid 12 under slip lid 11, the heating furnace on heating furnace main body 10, the heating furnace and end heat shield 13, seal as a whole, wherein on heating furnace main body 10, the heating furnace under slip lid 11 and the heating furnace slip lid 12 version from outside to inside be " furnace shell-heat-insulation layer-furnace lining ".
At warm-up phase, all reserve certain distance between per two adjacent rollers in described four rolls, described top working roll 42 can be realized preheating in the confined space that heating furnace 1 constitutes, top working roll 42 keeps the low speed uniform rotation in warm.Heating can improve the efficiency of heating surface in confined space, and uniform rotation can make top working roll 42 be heated evenly.Bottom working roll 43 in like manner.
Fig. 2 is the overall schematic of normal heating stage roll and heater, described heating furnace main body 10, end heat shield 13, heating furnace fixed disk 20 and elevating lever rotating disc 21 all are to split around the formula structure, when heater is worked, the symmetrical structure of the left and right sides is combined, thereby this heater is not subjected to the interference of roll bearings at both ends, be convenient to the roll that has installed is directly sealed, heats, simultaneously, the furnace binding that splits around formula is convenient to the part that breaks down in heating furnace 1 and the temperature control module 3 is overhauled.
In the magnesium alloy plate warm-rolling stage, described slip lid elevating lever 22 and the following slip lid elevating lever 23 gone up rotates to the elevating lever rotating disc 21 other end of place chute separately, on the heating furnace under slip lid 11 and the heating furnace slip lid 12 move to the middle part of heating furnace main body 10, be rolling equipment operate as normal and plate motion slot milling.Bottom working roll 43 in like manner.
Fig. 3 is the structure chart of normal heating stage heater, show as Fig. 3 (a), plate entrance side thermocouple 36 and plate outlet side thermocouple 37 are installed on the described heating furnace main body 10, described plate entrance side thermocouple 36 is used for detecting the temperature on the surface that top working roll 42 soon contacts with plate 44, if this temperature value and ideal value are inconsistent, the output voltage that temperature conditioning unit 30 is adjusted plate entrance side heating element heater 34 by plate entrance side pressure regulating device 32, the temperature of feeding back up to plate entrance side thermocouple 36 reaches the ideal temperature that roller surface needs.Owing to expose in air in the time of directly over the surface of top working roll 42 rotates to, and contact with upper support roller 40, this moment, variations in temperature was violent, and the heating duration of plate entrance side heating element heater 34 is limited, only rely on the voltage of regulating plate entrance side heating element heater 34 two ends, might produce control lag, the temperature that causes just beginning the work roll surface that contacts with plate is undesirable, therefore increased plate outlet side thermocouple 37, be used for detecting the temperature on the surface that will soon contact with upper support roller 40, and with temperature conditioning unit 30, plate outlet side pressure regulating device 33 and plate outlet side heating element heater 35 cooperate to regulate the temperature of this area surfaces, and corresponding temperature control principle is shown in Fig. 3 (b).Because the heat dissipation capacity on the surface that soon contacts with upper support roller 40 is constant, therefore certainly exist an optimum temperature, make this zone the surface through the heat radiation and plate entrance side heating element heater 34 initial voltages under heating, can reach the ideal temperature when contacting with plate, the required adjustment amount minimum of voltage at plate entrance side heating element heater 34 two ends, corresponding control lag amount is reduced to minimum.The optimum temperature value on the surface that soon contacts with upper support roller 40 can be obtained by test.The adjusting of bottom working roll 43 surface temperatures in like manner.
Described plate entrance side pressure regulating device 32 is made up of actuating motor, decelerator and pressure regulator;
Fig. 3 (c) is the front view of normal heating stage plate entrance side heater, because two ends, the left and right sides and the thermocouple passage 37 of working roll communicate with the external world, can cause certain thermal loss, therefore two ends are in the different temperature fields with middle work roll surface, for reaching the purpose of accurate temperature controlling, the temperature control zone is divided into three sections in left, center, right, heating element heater and thermocouple are set respectively.The arrangement form of outlet side heater in like manner.
Fig. 4 is the schematic diagram of positioner, the described slip lid elevating lever 22 of going up is made up of hydraulic cylinder 220, elevating lever 221, linking arm 222 and bearing 223, one end of linking arm 222 is welded on the elevating lever 221, and the other end and bearing 223 are connected by bolt, and bearing 223 links to each other with slip lid 11 on the heating furnace.The described slip lid elevating lever 22 of going up is made circular motion by slide block 211 at elevating lever rotating disc 21, behind the end of arrival chute 212, is fixed by pin 213.
Fig. 5 is the schematic diagram of end heat shield 13, described end heat shield 13 inner stuffed heat insulated cottons, and have the through hole that thermocouple passage 38 passes.
The method that a kind of magnesium alloy plate warm-rolling roll carries out online heating may further comprise the steps:
1) working roll is sealed preheating, reach desired value until surface temperature, and insulation;
2) location heater, the position when simultaneously each backing roll and working roll being moved to the normal warm-rolling of magnesium alloy;
3) the magnesium alloy blank is tried rolling, obtain optimum temperature value;
4) beginning is normally rolling, and realizes ideal by FEEDBACK CONTROL and to heat under the temperature.
Particularly, the concrete following method of each step is finished:
1) moves four rolls respectively, make between per two adjacent rollers all certain at interval distance, slip lid 12 under slip lid 11, the heating furnace on heating furnace main body 10, the heating furnace and 13 sealings of end heat shield is as a whole, top working roll 42 is sealed preheating, temperature until the top working roll 42 left, center, right side surfaces of plate entrance side thermocouple 36 and plate outlet side thermocouple 37 feedbacks all reaches desired value, and being incubated 30-40 minute, the preheating of bottom working roll 43 is in like manner;
2) slip lid 12 under slip lid on the heating furnace 11 and the heating furnace is moved to the middle part of heating furnace main body 10, be rolling equipment operate as normal and plate motion slot milling, in like manner locate the heater of bottom working roll 43, the position when simultaneously upper support roller 40, lower support roller 41, top working roll 42 and bottom working roll 43 being moved to the normal warm-rolling of magnesium alloy;
3) try rolling to the magnesium alloy blank, in this process, plate entrance side thermocouple 36 detects the temperature value that obtains and only shows and be not used in feedback regulation, plate outlet side thermocouple 37 detects the temperature value that obtains and had not only shown but also be used for feedback regulation, keep the voltage at plate entrance side heating element heater 34 two ends constant, set initial target temperature for the surface that soon contacts with upper support roller 40, the voltage that temperature conditioning unit 30 is regulated plate outlet side heating element heater 35 two ends makes the temperature of this area surfaces finally be stabilized in initial target value, record plate entrance side this moment thermocouple 36 detects the temperature that obtains, if this temperature value has reached the ideal temperature of the work roll surface that soon contacts with plate or has been within the acceptable scope, then the target temperature on the surface that soon contacts with upper support roller 40 this moment is optimum temperature value, otherwise change the target temperature of this area surfaces, up to finding the optimum temperature value that satisfies above-mentioned requirements, lower support roller 41 in like manner;
4) beginning is normally rolling, plate entrance side thermocouple 36 and plate outlet side thermocouple 37 detects the temperature value that obtains and all not only shown but also be used for feedback regulation, temperature conditioning unit 30 is by regulating the voltage at plate outlet side heating element heater 35 two ends in real time, the temperature on the feasible surface that soon contacts with upper support roller 40 reaches optimum value, again by regulating in real time the voltage at plate entrance side heating element heater 34 two ends, finally obtain the ideal temperature on the surface that top working roll 42 soon contacts with plate.
Advantage of the present invention and beneficial effect are: do not need to change the structure of existing roll, can use the solid roller of rigidity height, good reliability; Adopt the scheme of normal heating after the sealing preheating earlier, realized the Fast Heating of roll; Adopt the temperature control strategy of binocular mark temperature, obtained desirable roller surface temperature.As seen high efficiency of the present invention, the automaticity height, and can accurate temperature controlling, have good application prospects.
Description of drawings
Fig. 1 is the single working roll cross-sectional side view of warm-up phase
Fig. 2 is the overall schematic of normal heating stage roll and heater
Fig. 3 is the structure chart of normal heating stage heater
Wherein, Fig. 3 (a) is the cutaway view of whole heater of normal heating stage
The temperature control schematic diagram of Fig. 3 (b) temperature control module
Fig. 3 (c) is the front view of normal heating stage plate entrance side heater
Fig. 4 is the schematic diagram of positioner
Fig. 5 is the schematic diagram of end heat shield
Among the figure:
1, heating furnace 2, positioner 3, temperature control module
10, slip lid 13, end heat shield under slip lid 12, the heating furnace on heating furnace main body 11, the heating furnace
20, heating furnace fixed disk
21, elevating lever rotating disc 210, rotating disc main body 211, slide block 212, chute 213, pin
22, go up slip lid elevating lever 220, hydraulic cylinder 221, elevating lever 222, linking arm 223, bearing 224, bolt
23, following slip lid elevating lever
30, temperature conditioning unit 31, AC power 32, plate entrance side pressure regulating device 33, plate outlet side pressure regulating device
34, plate entrance side heating element heater 35, plate outlet side heating element heater 36, plate entrance side thermocouple
37, plate outlet side thermocouple 38, thermocouple passage
40, upper support roller 41, lower support roller 42, top working roll 43, bottom working roll 44, plate
45, advance/blow tank
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
In conjunction with Fig. 1 and Fig. 3, the online heater of a kind of magnesium alloy plate warm-rolling roll of the present invention, mainly formed by heating furnace 1, positioner 2 and temperature control module 3, described heating furnace 1 is fixed on the rolling-mill housing by positioner 2, temperature control module 3 detects the internal temperature of heating furnace 1, and the real-time monitoring heating power;
Heating furnace main body 10 in the described heating furnace 1 is fixed on the heating furnace fixed disk 20, heating furnace fixed disk 20 is fixed on the rolling-mill housing, fixedly connected between elevating lever rotating disc 21 in the positioner 2 and the heating furnace fixed disk 20, last slip lid elevating lever 22 and following slip lid elevating lever 23 are connected with corresponding slide block respectively and embed in the chute 212 of elevating lever rotating disc 21, on the heating furnace under slip lid 11 and the heating furnace surface of slip lid 12 bearing is installed, fixedly connected with following slip lid elevating lever 23 with last slip lid elevating lever 22 respectively; Have the through hole of laying thermocouple passage 38 on the end heat shield 13 in the heating furnace 1, the both sides of top working roll 42 are installed plate entrance side thermocouple 36 and plate outlet side thermocouple 37 respectively, connect temperature conditioning unit 30 with plate entrance side heating element heater 34, plate outlet side heating element heater 35.The structure of the heater of bottom working roll 43 in like manner.
Described heating furnace 1 is made up of slip lid 12 under slip lid 11, the heating furnace on heating furnace main body 10, the heating furnace and end heat shield 13, seal as a whole, wherein on heating furnace main body 10, the heating furnace under slip lid 11 and the heating furnace slip lid 12 version from outside to inside be " furnace shell-heat-insulation layer-furnace lining ".
At warm-up phase, all reserve certain distance between per two adjacent rollers in described four rolls, described top working roll 42 can be realized preheating in the confined space that heating furnace 1 constitutes, top working roll 42 keeps the low speed uniform rotation in warm.Heating can improve the efficiency of heating surface in confined space, and uniform rotation can make top working roll 42 be heated evenly.Bottom working roll 43 in like manner.
Fig. 2 is the overall schematic of normal heating stage roll and heater, described heating furnace main body 10, end heat shield 13, heating furnace fixed disk 20 and elevating lever rotating disc 21 all are to split around the formula structure, when heater is worked, the symmetrical structure of the left and right sides is combined, thereby this heater is not subjected to the interference of roll bearings at both ends, be convenient to the roll that has installed is directly sealed, heats, simultaneously, the furnace binding that splits around formula is convenient to the part that breaks down in heating furnace 1 and the temperature control module 3 is overhauled.
In the magnesium alloy plate warm-rolling stage, described slip lid elevating lever 22 and the following slip lid elevating lever 23 gone up rotates to the elevating lever rotating disc 21 other end of place chute separately, on the heating furnace under slip lid 11 and the heating furnace slip lid 12 move to the middle part of heating furnace main body 10, be rolling equipment operate as normal and plate motion slot milling.Bottom working roll 43 in like manner.
Fig. 3 is the structure chart of normal heating stage heater, show as Fig. 3 (a), plate entrance side thermocouple 36 and plate outlet side thermocouple 37 are installed on the described heating furnace main body 10, described plate entrance side thermocouple 36 is used for detecting the temperature on the surface that top working roll 42 soon contacts with plate 44, if this temperature value and ideal value are inconsistent, the output voltage that temperature conditioning unit 30 is adjusted plate entrance side heating element heater 34 by plate entrance side pressure regulating device 32, the temperature of feeding back up to plate entrance side thermocouple 36 reaches the ideal temperature that roller surface needs.Owing to expose in air in the time of directly over the surface of top working roll 42 rotates to, and contact with upper support roller 40, this moment, variations in temperature was violent, and the heating duration of plate entrance side heating element heater 34 is limited, only rely on the voltage of regulating plate entrance side heating element heater 34 two ends, might produce control lag, the temperature that causes just beginning the work roll surface that contacts with plate is undesirable, therefore increased plate outlet side thermocouple 37, be used for detecting the temperature on the surface that will soon contact with upper support roller 40, and with temperature conditioning unit 30, plate outlet side pressure regulating device 33 and plate outlet side heating element heater 35 cooperate to regulate the temperature of this area surfaces, and corresponding temperature control principle is shown in Fig. 3 (b).Because the heat dissipation capacity on the surface that soon contacts with upper support roller 40 is constant, therefore certainly exist an optimum temperature, make this zone the surface through the heat radiation and plate entrance side heating element heater 34 initial voltages under heating, can reach the ideal temperature when contacting with plate, the required adjustment amount minimum of voltage at plate entrance side heating element heater 34 two ends, corresponding control lag amount is reduced to minimum.The optimum temperature value on the surface that soon contacts with upper support roller 40 can be obtained by test.The adjusting of bottom working roll 43 surface temperatures in like manner.
Described plate entrance side pressure regulating device 32 is made up of actuating motor, decelerator and pressure regulator;
Fig. 3 (c) is the front view of normal heating stage plate entrance side heater, because two ends, the left and right sides and the thermocouple passage 37 of working roll communicate with the external world, can cause certain thermal loss, therefore two ends are in the different temperature fields with middle work roll surface, for reaching the purpose of accurate temperature controlling, the temperature control zone is divided into three sections in left, center, right, heating element heater and thermocouple are set respectively.The arrangement form of outlet side heater in like manner.
Fig. 4 is the schematic diagram of positioner, the described slip lid elevating lever 22 of going up is made up of hydraulic cylinder 220, elevating lever 221, linking arm 222 and bearing 223, one end of linking arm 222 is welded on the elevating lever 221, and the other end and bearing 223 are connected by bolt, and bearing 223 links to each other with slip lid 11 on the heating furnace.The described slip lid elevating lever 22 of going up is made circular motion by slide block 211 at elevating lever rotating disc 21, behind the end of arrival chute 212, is fixed by pin 213.
Fig. 5 is the schematic diagram of end heat shield 13, described end heat shield 13 inner stuffed heat insulated cottons, and have the through hole that thermocouple passage 38 passes.
The method that a kind of magnesium alloy plate warm-rolling roll carries out online heating may further comprise the steps:
1) working roll is sealed preheating, reach desired value until surface temperature, and insulation;
2) location heater, the position when simultaneously each backing roll and working roll being moved to the normal warm-rolling of magnesium alloy;
3) the magnesium alloy blank is tried rolling, obtain optimum temperature value;
4) beginning is normally rolling, and realizes ideal by FEEDBACK CONTROL and to heat under the temperature.
Particularly, each step is specifically finished by the following method:
1) moves four rolls respectively, make between per two adjacent rollers all certain at interval distance, slip lid 12 under slip lid 11, the heating furnace on heating furnace main body 10, the heating furnace and 13 sealings of end heat shield is as a whole, top working roll 42 is sealed preheating, temperature until the top working roll 42 left, center, right side surfaces of plate entrance side thermocouple 36 and plate outlet side thermocouple 37 feedbacks all reaches desired value, and being incubated 30-40 minute, the preheating of bottom working roll 43 is in like manner;
2) slip lid 12 under slip lid on the heating furnace 11 and the heating furnace is moved to the middle part of heating furnace main body 10, be rolling equipment operate as normal and plate motion slot milling, in like manner locate the heater of bottom working roll 43, the position when simultaneously upper support roller 40, lower support roller 41, top working roll 42 and bottom working roll 43 being moved to the normal warm-rolling of magnesium alloy;
3) try rolling to the magnesium alloy blank, in this process, plate entrance side thermocouple 36 detects the temperature value that obtains and only shows and be not used in feedback regulation, plate outlet side thermocouple 37 detects the temperature value that obtains and had not only shown but also be used for feedback regulation, keep the voltage at plate entrance side heating element heater 34 two ends constant, set initial target temperature for the surface that soon contacts with upper support roller 40, the voltage that temperature conditioning unit 30 is regulated plate outlet side heating element heater 35 two ends makes the temperature of this area surfaces finally be stabilized in initial target value, record plate entrance side this moment thermocouple 36 detects the temperature that obtains, if this temperature value has reached the ideal temperature of the work roll surface that soon contacts with plate or has been within the acceptable scope, then the target temperature on the surface that soon contacts with upper support roller 40 this moment is optimum temperature value, otherwise change the target temperature of this area surfaces, up to finding the optimum temperature value that satisfies above-mentioned requirements, lower support roller 41 in like manner;
4) beginning is normally rolling, plate entrance side thermocouple 36 and plate outlet side thermocouple 37 detects the temperature value that obtains and all not only shown but also be used for feedback regulation, temperature conditioning unit 30 is by regulating the voltage at plate outlet side heating element heater 35 two ends in real time, the temperature on the feasible surface that soon contacts with upper support roller 40 reaches optimum value, again by regulating in real time the voltage at plate entrance side heating element heater 34 two ends, finally obtain the ideal temperature on the surface that top working roll 42 soon contacts with plate.
It is worthy of note that mode given here is just as a specific embodiment of the present invention, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.
The present invention is applicable to two rollers and multiple roll magnesium alloy plate warm-rolling milling train, and above-mentioned only is that example is introduced with the four-high mill, finds out easily, and other multiple roll magnesium alloy plate warm-rolling milling trains can be realized by the class ratio method.
Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Claims (8)
1. online heater of magnesium alloy plate warm-rolling roll, formed by heating furnace (1), positioner (2) and temperature control module (3), described heating furnace (1) is fixed on the rolling-mill housing by positioner (2), temperature control module (3) detects the internal temperature of heating furnace (1), and the real-time monitoring heating power; It is characterized in that:
Heating furnace main body (10) in the described heating furnace (1) is fixed on the heating furnace fixed disk (20), heating furnace fixed disk (20) is fixed on the rolling-mill housing, fixedly connected between elevating lever rotating disc (21) in the positioner (2) and the heating furnace fixed disk (20), last slip lid elevating lever (22) and following slip lid elevating lever (23) are connected with corresponding slide block respectively and embed in the chute (212) of elevating lever rotating disc (21), the surface of slip lid (12) is equipped with bearing under slip lid on the heating furnace (11) and the heating furnace, fixedlys connected with following slip lid elevating lever (23) with last slip lid elevating lever (22) respectively; Have the through hole of laying thermocouple passage (38) on the end heat shield (13) in the heating furnace (1), the both sides of top working roll (42) are installed plate entrance side thermocouple (36) and plate outlet side thermocouple (37) respectively, connect temperature conditioning unit (30) with plate entrance side heating element heater (34), plate outlet side heating element heater (35); The structure of the heater of bottom working roll (43) in like manner.
2. the online heater of a kind of magnesium alloy plate warm-rolling roll according to claim 1 is characterized in that:
Described heating furnace (1) is made up of slip lid (12) under slip lid (11), the heating furnace on heating furnace main body (10), the heating furnace and end heat shield (13), seal as a whole, wherein on heating furnace main body (10), the heating furnace under slip lid (11) and the heating furnace slip lid (12) version from outside to inside be " furnace shell-heat-insulation layer-furnace lining ";
Described heating furnace main body (10), end heat shield (13), heating furnace fixed disk (20) and elevating lever rotating disc (21) all are to split around the formula structure, and when heater was worked, the symmetrical structure of the left and right sides was combined;
At warm-up phase, all reserve certain distance between per two adjacent rollers in described four rolls, described top working roll (42) is realized preheating in the confined space that heating furnace (1) constitutes, top working roll in warm (42) keeps the low speed uniform rotation;
In the magnesium alloy plate warm-rolling stage, described slip lid elevating lever (22) and the following slip lid elevating lever (23) gone up rotates to the elevating lever rotating disc (21) the other end of place chute separately, slip lid (12) moves to the middle part of heating furnace main body (10) under slip lid on the heating furnace (11) and the heating furnace, is rolling equipment operate as normal and plate motion slot milling; Bottom working roll (43) in like manner;
In the normal heating stage, the temperature control zone of entrance side heater is divided into three sections in left, center, right, and heating element heater and thermocouple are set respectively; The arrangement form of outlet side heater in like manner.
3. the online heater of a kind of magnesium alloy plate warm-rolling roll according to claim 2 is characterized in that:
Plate entrance side thermocouple (36) and plate outlet side thermocouple (37) are installed on the described heating furnace main body (10), the temperature on the surface that described plate entrance side thermocouple (36) detection top working roll (42) will soon contact with plate (44), if this temperature value and ideal value are inconsistent, temperature conditioning unit (30) is by the output voltage of plate entrance side pressure regulating device (32) adjustment to plate entrance side heating element heater (34), and the temperature of feeding back up to plate entrance side thermocouple (36) reaches the ideal temperature that roller surface needs;
Described plate outlet side thermocouple (37) detects the temperature on the surface that soon contacts with upper support roller (40), and cooperates to regulate the temperature of this area surfaces with temperature conditioning unit (30), plate outlet side pressure regulating device (33) and plate outlet side heating element heater (35); The adjusting of bottom working roll (43) surface temperature in like manner.
4. the online heater of a kind of magnesium alloy plate warm-rolling roll according to claim 3 is characterized in that:
Described plate entrance side pressure regulating device (32) is made up of actuating motor, decelerator and pressure regulator.
5. according to the online heater of each described a kind of magnesium alloy plate warm-rolling roll in the claim 1 to 4, it is characterized in that:
The described slip lid elevating lever (22) of going up is made up of hydraulic cylinder (220), elevating lever (221), linking arm (222) and bearing (223), one end of linking arm (222) is fixed on the elevating lever (221), the other end is fixedlyed connected with bearing (223), and bearing (223) links to each other with slip lid (11) on the heating furnace;
The described slip lid elevating lever (22) of going up is made circular motion by slide block (211) at elevating lever rotating disc (21), behind the end of arrival chute (212), is fixed by pin (213).
6. according to the online heater of each described a kind of magnesium alloy plate warm-rolling roll in the claim 1 to 4, it is characterized in that:
The inner stuffed heat insulated cotton of described end heat shield (13).
7. method that magnesium alloy plate warm-rolling roll carries out online heating may further comprise the steps:
1) working roll is sealed preheating, reach desired value until surface temperature, and insulation;
2) location heater, the position when simultaneously each backing roll and working roll being moved to the normal warm-rolling of magnesium alloy;
3) the magnesium alloy blank is tried rolling, obtain optimum temperature value;
4) beginning is normally rolling, and realizes ideal by FEEDBACK CONTROL and to heat under the temperature.
8. a kind of magnesium alloy plate warm-rolling roll according to claim 7 method of carrying out online heating is characterized in that: specifically finish by the following method:
1) moves four rolls respectively, make between per two adjacent rollers all certain at interval distance, slip lid (12) under slip lid (11), the heating furnace on heating furnace main body (10), the heating furnace and end heat shield (13) sealing is as a whole, top working roll (42) is sealed preheating, temperature until top working roll (42) the left, center, right side surface of plate entrance side thermocouple (36) and plate outlet side thermocouple (37) feedback all reaches desired value, and being incubated 30 to 40 minutes, the preheating of bottom working roll (43) is in like manner;
2) slip lid (12) under slip lid on the heating furnace (11) and the heating furnace is moved to the middle part of heating furnace main body (10), be rolling equipment operate as normal and plate motion slot milling, in like manner locate the heater of bottom working roll (43), the position when simultaneously upper support roller (40), lower support roller (41), top working roll (42) and bottom working roll (43) being moved to the normal warm-rolling of magnesium alloy;
3) try rolling to the magnesium alloy blank, in this process, plate entrance side thermocouple (36) detects the temperature value obtain and only shows and be not used in feedback regulation, plate outlet side thermocouple (37) detects the temperature value obtain and had not only shown but also be used for feedback regulation, keep the voltage at plate entrance side heating element heater (34) two ends constant, set initial target temperature for the surface that soon contacts with upper support roller (40), the voltage that temperature conditioning unit (30) is regulated plate outlet side heating element heater (35) two ends makes the temperature of this area surfaces finally be stabilized in initial target value, record plate entrance side thermocouple this moment (36) detects the temperature that obtains, if this temperature value has reached the ideal temperature of the work roll surface that soon contacts with plate or has been within the acceptable scope, then the target temperature on the surface that soon contacts with upper support roller (40) this moment is optimum temperature value, otherwise change the target temperature of this area surfaces, up to finding the optimum temperature value that satisfies above-mentioned requirements, lower support roller (41) in like manner;
4) beginning is normally rolling, plate entrance side thermocouple (36) and plate outlet side thermocouple (37) detect the temperature value that obtains and had all not only shown but also be used for feedback regulation, temperature conditioning unit (30) is by regulating the voltage at plate outlet side heating element heater (35) two ends in real time, the temperature on the feasible surface that soon contacts with upper support roller (40) reaches optimum value, again by regulating in real time the voltage at plate entrance side heating element heater (34) two ends, finally obtain the ideal temperature on the surface that top working roll (42) soon contacts with plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310177426.XA CN103240275B (en) | 2013-05-14 | 2013-05-14 | On-line heating device and heating method of magnesium alloy sheet warm rolling rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310177426.XA CN103240275B (en) | 2013-05-14 | 2013-05-14 | On-line heating device and heating method of magnesium alloy sheet warm rolling rollers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103240275A true CN103240275A (en) | 2013-08-14 |
| CN103240275B CN103240275B (en) | 2014-05-07 |
Family
ID=48920346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310177426.XA Expired - Fee Related CN103240275B (en) | 2013-05-14 | 2013-05-14 | On-line heating device and heating method of magnesium alloy sheet warm rolling rollers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103240275B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384187A (en) * | 2014-12-08 | 2015-03-04 | 太原科技大学 | Magnesium alloy sheet rolling device |
| CN104438329A (en) * | 2014-12-08 | 2015-03-25 | 太原科技大学 | Rolling method for magnesium alloy plates |
| CN105834220A (en) * | 2015-01-16 | 2016-08-10 | 宝山钢铁股份有限公司 | Method and device for induction heating of magnesium alloy plate and strip roll |
| CN106475426A (en) * | 2015-08-26 | 2017-03-08 | 宝山钢铁股份有限公司 | Roll surface temperature device for accurately measuring and measuring method |
| CN108981926A (en) * | 2018-08-03 | 2018-12-11 | 合肥工业大学 | A kind of temperature acquisition system applied to band-like Nonlubricated bearing production line |
| CN113814277A (en) * | 2021-09-03 | 2021-12-21 | 燕山大学 | Device for rolling plate strip by utilizing electromagnetic heat and rolling method thereof |
| CN113976630A (en) * | 2021-11-18 | 2022-01-28 | 燕山大学 | Device capable of preheating roller at constant temperature and operation method thereof |
| CN116765137A (en) * | 2023-08-22 | 2023-09-19 | 绵阳双辉金属科技有限公司 | Steel sheet calendering roller temperature control system that adjusts temperature fast |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB239766A (en) * | 1925-01-10 | 1925-09-17 | Freyn Brassert & Company | Improvements in heaters for rolls |
| GB2068807A (en) * | 1980-01-25 | 1981-08-19 | Escher Wyss Ltd | Roller with surface heat exchange apparatus |
| JPH0615315A (en) * | 1992-06-30 | 1994-01-25 | Hitachi Ltd | Heat crown controller for rolling rolls |
| JP2000225406A (en) * | 1999-02-05 | 2000-08-15 | Mitsubishi Heavy Ind Ltd | Induction heating device for controlling shape of heat crown of rolling roll |
| CN1365864A (en) * | 2001-01-15 | 2002-08-28 | 三菱重工业株式会社 | Induction heating device for roll and induction heating method |
| CN201223878Y (en) * | 2008-04-18 | 2009-04-22 | 中冶连铸技术工程股份有限公司 | Roller preheating device |
| CN201644510U (en) * | 2010-02-23 | 2010-11-24 | 宝山钢铁股份有限公司 | Roller thermal forming heating control device |
| CN102430570A (en) * | 2011-11-08 | 2012-05-02 | 东北大学 | Device and method for warm-milling metal thin strips and ultrathin strips by hot rollers |
| CN203245183U (en) * | 2013-05-14 | 2013-10-23 | 吉林大学 | Magnesium alloy plate warm-rolling roller on-line heating device |
-
2013
- 2013-05-14 CN CN201310177426.XA patent/CN103240275B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB239766A (en) * | 1925-01-10 | 1925-09-17 | Freyn Brassert & Company | Improvements in heaters for rolls |
| GB2068807A (en) * | 1980-01-25 | 1981-08-19 | Escher Wyss Ltd | Roller with surface heat exchange apparatus |
| JPH0615315A (en) * | 1992-06-30 | 1994-01-25 | Hitachi Ltd | Heat crown controller for rolling rolls |
| JP2000225406A (en) * | 1999-02-05 | 2000-08-15 | Mitsubishi Heavy Ind Ltd | Induction heating device for controlling shape of heat crown of rolling roll |
| CN1365864A (en) * | 2001-01-15 | 2002-08-28 | 三菱重工业株式会社 | Induction heating device for roll and induction heating method |
| CN201223878Y (en) * | 2008-04-18 | 2009-04-22 | 中冶连铸技术工程股份有限公司 | Roller preheating device |
| CN201644510U (en) * | 2010-02-23 | 2010-11-24 | 宝山钢铁股份有限公司 | Roller thermal forming heating control device |
| CN102430570A (en) * | 2011-11-08 | 2012-05-02 | 东北大学 | Device and method for warm-milling metal thin strips and ultrathin strips by hot rollers |
| CN203245183U (en) * | 2013-05-14 | 2013-10-23 | 吉林大学 | Magnesium alloy plate warm-rolling roller on-line heating device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384187A (en) * | 2014-12-08 | 2015-03-04 | 太原科技大学 | Magnesium alloy sheet rolling device |
| CN104438329A (en) * | 2014-12-08 | 2015-03-25 | 太原科技大学 | Rolling method for magnesium alloy plates |
| CN104384187B (en) * | 2014-12-08 | 2016-03-09 | 太原科技大学 | A kind of rolling device of magnesium alloy plate |
| CN105834220A (en) * | 2015-01-16 | 2016-08-10 | 宝山钢铁股份有限公司 | Method and device for induction heating of magnesium alloy plate and strip roll |
| CN105834220B (en) * | 2015-01-16 | 2017-08-25 | 宝山钢铁股份有限公司 | Magnesium alloy board roll induction heating method and device |
| CN106475426A (en) * | 2015-08-26 | 2017-03-08 | 宝山钢铁股份有限公司 | Roll surface temperature device for accurately measuring and measuring method |
| CN108981926A (en) * | 2018-08-03 | 2018-12-11 | 合肥工业大学 | A kind of temperature acquisition system applied to band-like Nonlubricated bearing production line |
| CN108981926B (en) * | 2018-08-03 | 2020-03-17 | 合肥工业大学 | Temperature acquisition system applied to belt-shaped oil-free lubrication bearing production line |
| CN113814277A (en) * | 2021-09-03 | 2021-12-21 | 燕山大学 | Device for rolling plate strip by utilizing electromagnetic heat and rolling method thereof |
| CN113814277B (en) * | 2021-09-03 | 2022-07-01 | 燕山大学 | Device for rolling plate strip by utilizing electromagnetic heat and rolling method thereof |
| CN113976630A (en) * | 2021-11-18 | 2022-01-28 | 燕山大学 | Device capable of preheating roller at constant temperature and operation method thereof |
| CN116765137A (en) * | 2023-08-22 | 2023-09-19 | 绵阳双辉金属科技有限公司 | Steel sheet calendering roller temperature control system that adjusts temperature fast |
| CN116765137B (en) * | 2023-08-22 | 2023-11-10 | 绵阳双辉金属科技有限公司 | Steel sheet calendering roller temperature control system that adjusts temperature fast |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103240275B (en) | 2014-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103240275B (en) | On-line heating device and heating method of magnesium alloy sheet warm rolling rollers | |
| CN203245183U (en) | Magnesium alloy plate warm-rolling roller on-line heating device | |
| CN105834214B (en) | Produce the temperature-controlled rolling equipment of metal plate coils | |
| CN100340352C (en) | Roller center heater of magnesium alloy board | |
| CN103233190B (en) | Method for preparing semisolid blank | |
| CN103203358B (en) | Rolling method capable of improving biting condition in rolling process of reversible rolling mill | |
| CN102581031B (en) | Inner-source driven comprehensive shape and thickness regulation mill | |
| CN103272844B (en) | Device and method for rolling magnesium alloy at different temperatures | |
| CN108728779B (en) | A kind of the flexible forming system and manufacturing process of amorphous alloy plate | |
| CN105945071A (en) | On-line roller change device and method for finish rolling unit in endless strip production | |
| CN105665594A (en) | Isothermal thermal forming hydraulic machine heating and heat preservation system and operating method | |
| CN101128270B (en) | Milling device for inline-rolling a steel band produced especially by means of a twin-roll continuous casting process | |
| CN103990947A (en) | Manufacturing method for Al-Mg alloy hub | |
| CN201223878Y (en) | Roller preheating device | |
| CN103008361B (en) | Method for controlling bending of steel plate head | |
| CN103817155B (en) | Thickness is greater than 50mm steel plate board-shape control method | |
| CN112247478A (en) | Copper alloy casting roller sleeve assembling method | |
| CN103230943B (en) | Improve the method for Warping Phenomenon in Plate Rolling Process | |
| Xu et al. | Feeding strategy design for steel 42CrMo in radial-axial ring rolling using processing map | |
| CN102527734B (en) | Steel plate controlling and rolling method | |
| CN102179401A (en) | Battery pole piece fine rolling mill synchronously driven by double motors | |
| CN103230951A (en) | Hot extrusion forming method of light alloy horn-shaped pipe fitting | |
| CN203610416U (en) | On-line roll heating device of warm rolling mill | |
| CN107081339B (en) | Roll during Hot Strip Rolling thermally expands the method for determination and compensation method sews and mend in Rolling roller | |
| CN102430571B (en) | Four-roll hot milling device for production of magnesium alloy coils |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20150514 |
|
| EXPY | Termination of patent right or utility model |