CN110369524A - A kind of silicon steel cold-rolled strip steam preheating apparatus - Google Patents
A kind of silicon steel cold-rolled strip steam preheating apparatus Download PDFInfo
- Publication number
- CN110369524A CN110369524A CN201910612735.2A CN201910612735A CN110369524A CN 110369524 A CN110369524 A CN 110369524A CN 201910612735 A CN201910612735 A CN 201910612735A CN 110369524 A CN110369524 A CN 110369524A
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- China
- Prior art keywords
- heating
- heating roller
- roll
- steel band
- rolled strip
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Abstract
The present invention relates to a kind of silicon steel cold-rolled strip steam preheating apparatus, including heating roller, heating mantles and steel band slewing rollers；The body of roll and roll shaft of the heating roller are hollow structure, and edge is axially arranged with spiral shape heat exchanger plates on the inner wall of the body of roll, and there are high pressure steam channels at the middle part of spiral shape heat exchanger plates；Air inlet pipe is set along axial direction in one roll shaft of heating roller, air inlet pipe is connect with external high pressure jet chimney；Exhaust pipe is set along axial direction in another roll shaft of heating roller, and the one end of exhaust pipe in the body of roll vertically extends to body of roll inner wall side；The top of heating roller sets heating mantles, and heating mantles are equipped with multiple high pressure steam entrances；The two sides of heating roller are respectively equipped with steel band slewing rollers, and the axis of steel band slewing rollers is parallel to heating roll axis.Steel band can be preheated to 50~120 DEG C, to avoid belt phenomenon occur when silicon steel cold rolling under conditions of environment temperature is lower than 20 DEG C by the present invention.
Description
Technical field
The present invention relates to cold rolling technology field more particularly to a kind of silicon steel cold-rolled strip steam preheating apparatus.
Background technique
20 roller sendzimir mills are one of the capital equipments of current production cold rolled silicon steel, due to silicon iron hot rolling raw material
The phenomenon that template problem in defect and the operation of rolling, strip is torn frequent occurrence in the cold-rolled process with tension, (broke band
Phenomenon), and the destruction of each roller surface finish in roller system of rolling mill is often resulted in, lead to halt production roll change, causes huge economy
Loss.
Carrying out preheating to steel band is the effective ways for preventing disconnected band, but on condition that must be heated to ductile-brittle transition temperature with
On.At present steel band pre-heating mean mainly include the following types:
1, water bath heating；This method is integrally to be put into coil of strip in hot water to heat.Its existing main problem: due to steel
Scroll product is larger, and entire volume heating and water engaging surface product are smaller, and water temperature can only be controlled at 100 degree or less.When heating in this way
Between it is longer.In addition because use hot water heating, it cannot be heated to higher temperature, to crisp transition temperature close to 100 degree of steel
It is helpless；
2, induction heating；This method be using high-frequency ac power formed eddy heating for heating steel plate, there are the problem of:
First is that this method needs larger current, it is higher to grid requirements；Second is that for high grade silicon steel since silicon content is higher, to inhibition
Eddy current effect is larger, lower using this method heating efficiency；Third is that needing to increase the equipment such as high frequency electric source, capital investment is higher；
In addition, this method also needs biggish space storage equipment；
3, flame heating；There is the open firing method using pure oxygen coal gas in recent years, there are problems for this method: first is that
Flame directly heats steel plate, and easily causes steel plate to aoxidize under the action of pure oxygen.Second is that gas pressure variation easily causes flame
Flame core variation influences heating efficiency.Third is that this method, which is used, rolls the burner more to setting along steel band in order to increase heating efficiency,
If there is the operation such as fracture and change of lap leader tape, need to lift burner, therefore operating difficulties.Fourth is that biggish place is needed to store
Equipment, if existing milling train can not be installed without reserved space.
Summary of the invention
The present invention provides a kind of silicon steel cold-rolled strip steam preheating apparatus, can be in condition of the environment temperature lower than 20 DEG C
Under, steel band is preheated to 50~120 DEG C, to avoid belt phenomenon occur when silicon steel cold rolling.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of silicon steel cold-rolled strip steam preheating apparatus, including heating roller, heating mantles and steel band slewing rollers；The heating roller
The body of roll and roll shaft be hollow structure, along being axially arranged with spiral shape heat exchanger plates on the inner wall of the body of roll, in spiral shape heat exchanger plates
There are high pressure steam channels in portion；Air inlet pipe, air inlet pipe and external high pressure jet chimney are set along axial direction in one roll shaft of heating roller
Connection；Exhaust pipe is set along axial direction in another roll shaft of heating roller, and the one end of exhaust pipe in the body of roll is vertically to body of roll inner wall
Side extends；The top of heating roller sets heating mantles, and heating mantles are equipped with multiple high pressure steam entrances；The two sides of heating roller are set respectively
There are steel band slewing rollers, the axis of steel band slewing rollers is parallel to heating roll axis.
The heating mantles are supported by steel band slewing rollers, are rotatablely connected between steel band slewing rollers and heating mantles by bearing.
Heating mantles two sides of the bottom wall between 2 steel band slewing rollers opens up half matched with the heating roller body of roll respectively
Circular hole is circumferentially with multiple high pressure steam entrances along semicircle orifice, and high pressure steam entrance is separately connected external high pressure steam pipeline.
The material of the heating roller is steel or copper.
The diameter of the heating roller is 400~1000mm.
The heating roller is plain roller.
The air inlet pipe is connect by seal swivel joint with high pressure steam pipeline.
Sealing structure is equipped between the air inlet pipe, exhaust pipe and the roll shaft of heating roller.
The floor height of the steel band slewing rollers is higher than heating roll axis height, heating roll axis height and steel band lower surface
Height is concordant.
Compared with prior art, the beneficial effects of the present invention are:
1) heating roller is set before cold-rolling mill, and steel plate is preheated by heat exchange pattern, heat transfer efficiency between object under solution low temperature
Low problem；
2) in order to improve heating efficiency, heating roller is placed in the heating mantles with heating function；Lead to high temperature in heating mantles
Thermal energy is directly passed to steel band by steam, and capacity usage ratio is high.
3) heating roller is hollow structure, and inside is equipped with spiral shape heat exchanger plates, can effectively increase heat exchange efficiency；
4) exhaust pipe extends in heating roller inner spout to body of roll inner wall side, can receive condensed water in heating roller rotation
Collect in exhaust pipe, for the condensed water generated in heater stop work to be discharged.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of silicon steel cold-rolled strip steam preheating apparatus of the present invention.
Fig. 2 is the cross-sectional view of heating roller of the present invention.
In figure: 1. heating roller, 11. body of roll, 12. roll shaft, 13. spiral heat exchanger plates, 2. heating mantles, 21. high pressure steam entrance
3. 4. air inlet pipe of steel band slewing rollers, 5. exhaust pipe
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figure 1, a kind of silicon steel cold-rolled strip steam preheating apparatus of the present invention, including heating roller 1, heating mantles 2
And steel band slewing rollers 3；As shown in Fig. 2, the body of roll 11 and roll shaft 12 of the heating roller 1 are hollow structure, the inner wall of the body of roll 11
Upper edge is axially arranged with spiral shape heat exchanger plates 13, and there are high pressure steam channels at the middle part of spiral shape heat exchanger plates 13；One of heating roller 1
Air inlet pipe 4 is set along axial direction in roll shaft 12, air inlet pipe 4 is connect with external high pressure jet chimney；In another roll shaft 12 of heating roller 1
Exhaust pipe 5 is set along axial direction, and the one end of exhaust pipe 5 in the body of roll 11 vertically extends to 11 inner wall side of the body of roll；Heating roller 1 it is upper
Portion sets heating mantles 2, and heating mantles 2 are equipped with multiple high pressure steam entrances 21；The two sides of heating roller 1 are respectively equipped with steel band slewing rollers 3,
The axis of steel band slewing rollers 3 is parallel to 1 axis of heating roller.
The heating mantles 2 are supported by steel band slewing rollers 3, are rotated and are connected by bearing between steel band slewing rollers 3 and heating mantles 2
It connects.
2 two sides of the bottom wall of heating mantles between 2 steel band slewing rollers 3 opens up respectively to match with 1 body of roll 11 of heating roller
The semicircle orifice of conjunction is circumferentially with multiple high pressure steam entrances 21 along semicircle orifice, and high pressure steam entrance 21 is separately connected external height
Press steam pipeline.
The material of the heating roller 1 is steel or copper.
The diameter of the heating roller 1 is 400~1000mm.
The heating roller 1 is plain roller.
The air inlet pipe 4 is connect by seal swivel joint with high pressure steam pipeline.
Sealing structure is equipped between the air inlet pipe 4, exhaust pipe 5 and the roll shaft 12 of heating roller 1.
The floor height of the steel band slewing rollers 4 is higher than 1 axis height of heating roller, under 1 axis height of heating roller and steel band
Apparent height is concordant.
Following embodiment is implemented under the premise of the technical scheme of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
Not mentionleting alone bright is conventional method.
[embodiment]
In the present embodiment, the chemical composition comprises the following components in percentage by weight of cold rolled silicon steel are as follows: C:0.002%, Si:2.95%, Mn:
0.24%, P:0.011%, S:0.004%, Als:0.25%, N:0.0013%, remaining is iron and inevitable impurity member
Element.
The production process of cold rolled silicon steel includes following process steps:
A) smelting and continuous casting: using converter smelting, RH vacuum refining processing, and molten steel composition is controlled by above-mentioned requirements, cast
230mm heavy slab；
B) 1130 DEG C of hot rolling slab tapping temperature enter mm finishing mill unit rolling after being just rolled to 40mm.Finish rolling start rolling temperature 980
DEG C, 880 DEG C of finishing temperature, 580 DEG C of coiling temperature；
C) hot rolled plate is through 940 DEG C of normalizing treatments；
D) 0.5mm is cold-rolled to after pickling；
Cold rolling uses 20 roll reversing rollers of Sendzimir type；Increase steel band steam preheating device before milling train (as schemed
1, shown in Fig. 2), steel plate is preheated using copper heating roller 1, heating roller 1 is placed in the heating mantles 2 with heating function.Heating
Cover 2 is heated in a manner of logical high-temperature vapour.
To increase heat exchange efficiency, spiral shape heat exchanger plates 13 are equipped in heating roller 1.High pressure is passed through in the body of roll 11 of heating roller 1
Vapor, high-pressure steam enter in heating roller 1 through air inlet pipe 4, are discharged by exhaust pipe 5, exhaust pipe 5 horizontally extends into heating roller roller
90 ° of bendings after body 11, nozzle will be arranged close to 11 inner wall of the body of roll when heating roller 1 rotates at the nozzle of condensation water collection to exhaust pipe 4
Out, steel band steam preheating apparatus after stopping working condensed water therein be discharged also by exhaust pipe 4.
Heating roller 1 is plain roller, and the body of roll 11 comes into full contact with steel band；To improve heating efficiency, heating roller 1 is placed in and is added
In heat cover 2, it is passed through vapor and carries out auxiliary heating；The two sides of heating roller 1 are equipped with steel band slewing rollers 3, and steel band is after threading by steel
Band slewing rollers 3 are pressed on heating roller 1, by 1 conduction heating of heating roller, while the high-temperature vapor in heating mantles 2 to its into
Row directly heats.
Main technologic parameters when steel band preheats are as shown in table 1.
Table 1
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of silicon steel cold-rolled strip steam preheating apparatus, which is characterized in that including heating roller, heating mantles and steel band slewing rollers；
The body of roll and roll shaft of the heating roller are hollow structure, and edge is axially arranged with spiral shape heat exchanger plates, spiral shape on the inner wall of the body of roll
There are high pressure steam channels at the middle part of heat exchanger plates；Air inlet pipe is set along axial direction in one roll shaft of heating roller, air inlet pipe and outside are high
Press jet chimney connection；Exhaust pipe is set along axial direction in another roll shaft of heating roller, and the one end of exhaust pipe in the body of roll is vertical
Extend to body of roll inner wall side；The top of heating roller sets heating mantles, and heating mantles are equipped with multiple high pressure steam entrances；Heating roller
Two sides are respectively equipped with steel band slewing rollers, and the axis of steel band slewing rollers is parallel to heating roll axis.
2. a kind of silicon steel cold-rolled strip steam preheating apparatus according to claim 1, which is characterized in that the heating mantles by
The support of steel band slewing rollers, is rotatablely connected between steel band slewing rollers and heating mantles by bearing.
3. a kind of silicon steel cold-rolled strip steam preheating apparatus according to claim 1, which is characterized in that 2 steel bands
Heating mantles two sides of the bottom wall between slewing rollers opens up the semicircle orifice matched with the heating roller body of roll respectively, circumferentially sets along semicircle orifice
There are multiple high pressure steam entrances, high pressure steam entrance is separately connected external high pressure steam pipeline.
4. a kind of silicon steel cold-rolled strip steam preheating apparatus according to claim 1, which is characterized in that the heating roller
Material is steel or copper.
5. a kind of silicon steel cold-rolled strip steam preheating apparatus according to claim 1, which is characterized in that the heating roller
Diameter is 400~1000mm.
6. a kind of silicon steel cold-rolled strip steam preheating apparatus according to claim 1, which is characterized in that the heating roller is
Plain roller.
7. a kind of silicon steel cold-rolled strip steam preheating apparatus according to claim 1, which is characterized in that the air inlet pipe is logical
Seal swivel joint is crossed to connect with high pressure steam pipeline.
8. a kind of silicon steel cold-rolled strip steam preheating apparatus according to claim 1, which is characterized in that the air inlet pipe,
Sealing structure is equipped between exhaust pipe and the roll shaft of heating roller.
9. a kind of silicon steel cold-rolled strip steam preheating apparatus according to claim 1, which is characterized in that the steel band turns to
The floor height of roller is higher than heating roll axis height, and heating roll axis height is concordant with steel band lower surface height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910612735.2A CN110369524A (en) | 2019-07-09 | 2019-07-09 | A kind of silicon steel cold-rolled strip steam preheating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910612735.2A CN110369524A (en) | 2019-07-09 | 2019-07-09 | A kind of silicon steel cold-rolled strip steam preheating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110369524A true CN110369524A (en) | 2019-10-25 |
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ID=68252391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910612735.2A Pending CN110369524A (en) | 2019-07-09 | 2019-07-09 | A kind of silicon steel cold-rolled strip steam preheating apparatus |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19936077A1 (en) * | 1999-07-30 | 2001-04-26 | Kelzenberg & Co Gmbh & Co Kg | Roll with temperature control fluid under outer shell has radial fins that define flow channel attached to outer shell |
| CN104588412A (en) * | 2015-01-13 | 2015-05-06 | 上海应用技术学院 | Roller heating device capable of realizing multiple temperature modes |
| CN205217608U (en) * | 2015-12-15 | 2016-05-11 | 常州市莱赫润机械有限公司 | Heating roll |
| CN205308956U (en) * | 2016-01-22 | 2016-06-15 | 张家港保税区中天机电设备有限公司 | Roller preheating device |
| CN107199244A (en) * | 2017-07-12 | 2017-09-26 | 上海应用技术大学 | Continuously, online, constant temperature roll heating temperature control device |
| CN206925148U (en) * | 2017-06-26 | 2018-01-26 | 常州市瑞宏轧辊有限公司 | High-efficiency heating type alloy ductile iron roll |
| CN208643683U (en) * | 2018-08-29 | 2019-03-26 | 李波 | A kind of roller bed cooling device |
-
2019
- 2019-07-09 CN CN201910612735.2A patent/CN110369524A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19936077A1 (en) * | 1999-07-30 | 2001-04-26 | Kelzenberg & Co Gmbh & Co Kg | Roll with temperature control fluid under outer shell has radial fins that define flow channel attached to outer shell |
| CN104588412A (en) * | 2015-01-13 | 2015-05-06 | 上海应用技术学院 | Roller heating device capable of realizing multiple temperature modes |
| CN205217608U (en) * | 2015-12-15 | 2016-05-11 | 常州市莱赫润机械有限公司 | Heating roll |
| CN205308956U (en) * | 2016-01-22 | 2016-06-15 | 张家港保税区中天机电设备有限公司 | Roller preheating device |
| CN206925148U (en) * | 2017-06-26 | 2018-01-26 | 常州市瑞宏轧辊有限公司 | High-efficiency heating type alloy ductile iron roll |
| CN107199244A (en) * | 2017-07-12 | 2017-09-26 | 上海应用技术大学 | Continuously, online, constant temperature roll heating temperature control device |
| CN208643683U (en) * | 2018-08-29 | 2019-03-26 | 李波 | A kind of roller bed cooling device |
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Application publication date: 20191025 |