CN106140820B - A kind of offline preheating device of hot-rolling mill roll - Google Patents
A kind of offline preheating device of hot-rolling mill roll Download PDFInfo
- Publication number
- CN106140820B CN106140820B CN201610501627.4A CN201610501627A CN106140820B CN 106140820 B CN106140820 B CN 106140820B CN 201610501627 A CN201610501627 A CN 201610501627A CN 106140820 B CN106140820 B CN 106140820B
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- Prior art keywords
- heating
- roll
- furnace body
- heating layer
- chamber
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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
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
- B21B27/106—Heating the rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
- B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2263/00—Shape of product
- B21B2263/04—Flatness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/12—Roll temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
A kind of offline preheating device of hot-rolling mill roll, including heating furnace, pedestal and two power plants, power plant is separately positioned on the opposite both ends of pedestal, heating furnace is set between two power plants, heating furnace is in Pear-Shaped, it is involuted by symmetrical upper half furnace body and lower half furnace body, along the upper heating layer of inner wall setting of upper half furnace body, along the lower heating layer of the inner wall setting of lower half furnace body, after upper half furnace body and lower half furnace body are to being combined into heating furnace, upper heating layer and lower heating layer composition heating layer, and heating chamber is surrounded by heating layer, heating chamber is divided into two side by side and the cylindrical chamber of connection, the both ends of chamber are respectively equipped with bearing, a pair roller to be preheated is individually placed in two chambers, after the shaft shoulder at roll both ends is made to be supported on bearing, it is rotated synchronously in warm by power plant driving roll.The present apparatus is simple in structure, easy to operate, hot-rolling is uniform, can obtain preferable roller shape, and then improve titanium plate milled sheet shape, using effect is preferable.
Description
Technical field
The invention belongs to metal working technical areas, and in particular to a kind of offline preheating device of hot-rolling mill roll.
Background technology
Titanium or titanium alloy plate hot rolling deformation drag and resilience are big, and milled sheet shape is more difficult to control, it is necessary to use and suitably roll
Otherwise easily there is flatness defect to obtain excellent plate shape in roller roller shape.Roll dressing roller shape and thermal expansion influence practical roller
Shape, roll dressing roller shape are determined when new roller is ground, and can be precisely controlled by the way that roll dressing parameter is controlled to realize, due to titanium plate
Roll will unavoidably heat up and expand in course of hot rolling, therefore roll dressing roller shape generally uses recessed roller.Thermal expansion pair
The influence of roller shape is complex, and roll preheats, roll and rolled piece and surrounding medium heat exchange influence practical roller in course of hot rolling
Shape.Generally at rolling initial stage, roller temperature is low, and thermal expansion is small, and recessed roller is presented in roll forming of the roll so that titanium plate rolled piece transverse gage point
Cloth edge is thin, thick middle, and bilateral unrestrained flatness defect is presented；With the progress of hot rolling, in the heat transfer of high temperature rolled piece, rolling friction heat
Under effect, roll expanded by heating reaches preferable roller shape, and the titanium plate rolled piece transverse gage of this stage rolling is evenly distributed, and plate shape is put down
Directly it is optimal, then by rationally roll being controlled to cool down, roll is made to absorb heat and radiate and reaches balance, roll forming of the roll all-the-time stable
In perfect condition, you can realize the control of titanium plate plate shape stable rolling.Therefore, roll preheating is very important, and can make roll
Preferable roller shape is obtained when starting to roll titanium plate, bilateral unrestrained flatness defect can be effectively avoided, so as to fulfill hot rolling titanium plate plate shape
Stability contorting purpose.
Unlike material and finished product thickness specification titanium plate hot rolling deformation drag differ greatly, and required ideal roller shape is different,
Integral principle is that titanium plate calorific intensity is higher, finished product thickness is thinner, and rolling deformation drag is bigger, and required ideal roller shape convexity is bigger.
To meet the preferable roller shape actual production demand of diversification, titanium plate hot rolling manufacturer, which generally requires, prepares multipair different grinding-roller shapes
Roll, while before mill product, need through semi-finished product hot rolling preheated nip roll, such method exist standby roller quantity it is more, partly into
Product rolling preheated nip roll effect is poor, is unfavorable for the drawbacks such as tissue production, and semi-finished product rolling hot-rolling easily damages roller surface,
And then finished product titanium plate rolled surface quality is influenced, therefore very unfavorable to titanium plate hot rolled plate shape and granule surface contral, effect is undesirable,
Urgent need is improved.
Invention content
The object of the present invention is to provide a kind of offline preheating device of hot-rolling mill roll, reasonable design, simple in structure, operation
Conveniently, hot-rolling is uniform, can obtain preferable roller shape, and then improve titanium plate milled sheet shape, using effect is preferable.Using the device,
With a pair roller by using different pre-fire systems, a variety of preferable roller shapes can be obtained, meet unlike material, different finished product thickness titaniums
Plate hot rolled plate shape well controls purpose, while reduces standby roller quantity, avoids semi-finished product rolling preheated nip roll damage assembled watch
The risk of face quality, organization of production is more flexible efficiently, solves prior art deficiency, has preferable economic benefit and quality
Advantage.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：A kind of hot-rolling mill roll preheats offline
Device, including heating furnace, pedestal and power plant, power plant sets two, is separately positioned on the opposite both ends of pedestal, two
Heating furnace is set between power plant, and heating furnace is in Pear-Shaped, is involuted by symmetrical upper half furnace body and lower half furnace body, edge
The upper heating layer of inner wall setting of upper half furnace body, along the lower heating layer of the inner wall setting of lower half furnace body, in upper half furnace body and lower half furnace body
After being combined into heating furnace, upper heating layer and lower heating layer composition heating layer, and heating chamber is surrounded by heating layer, heating chamber is divided into
Two arranged side by side and connection cylindrical chambers, the both ends of chamber are respectively equipped with bearing, and a pair roller to be preheated is individually placed to two
In chamber, after the shaft shoulder at roll both ends is made to be supported on bearing, rotated synchronously in warm by power plant driving roll.
Further, the heating layer is the internal layer of heating furnace body structure, in furnace structure, by heating layer outward successively
For insulating layer and furnace shell.
Further, the insulating layer is asbestos insulating layer.
Further, the upper heating layer and lower heating layer are crawler type ceramic electric heating layer.
Further, after roll is placed in the chamber, the distance between heating layer and roll barrel >=100mm, and roll
The end face of the roller body of roll and the distance between chamber end face >=50mm where the roll.
Further, the lower volume is fixed on pedestal, and upper furnace body is equipped with the lifting lug of lifting, and
And locking device is equipped between upper furnace body and lower volume.
Further, thermocouple is equipped in the chamber, the temperature measuring point of thermocouple is apart from 50 ± 10mm of insulating layer.
Further, the roll is opposite rotation in warm.
Compared with prior art, the beneficial effects of the invention are as follows：
First, the offline preheating device of roll described in the invention overcomes prior art deficiency, solves the prior art
Grinding machine for roller quantity is more, semi-finished product rolling preheated nip roll effect difference and damage finished surface quality, tissue production is inconvenient the problems such as,
The plate shape of hot rolled plate greatly improved simultaneously.
Second, the chamber of preheated nip roll of the present invention is connected, on the one hand, can be carried out at the same time preheating to each pair of roll, make
Each thermal expansion of rollers uniformity avoids separately expanded by heating problem of non-uniform between individually roll caused by heating, more has
Conducive to rolling Strip Shape Control；On the other hand, be conducive to being uniformly distributed for heat between two chambers, especially roll is preheated
Slowly run in journey, the convection current of heating chamber air can be driven, further promote being uniformly distributed for furnace temperature, ensure roller surface
Be heated evenly and every roll on each position expanded by heating it is more uniform.
Third, to different rolls using different pre-fire systems, can realize the essence of roll forming of the roll according to actual requirement
Really control meets unlike material, the preferable roller shape production requirement of finished product thickness titanium plate rolling.
4th, due to can accurately obtain preferable roller shape, and expanded by heating is uniform between each pair of roll, and milled sheet shape is excellent,
Roll preheating simultaneously will not damage roller surface, therefore finished product rolled surface good quality.
5th, roll both ends to be preheated and bearing fit, when roll is preheated and rotated, it is possible to reduce roll circumference direction
Frictional resistance.
Description of the drawings
Fig. 1 is the side view of structure of the present invention.
Fig. 2 is the structural decomposition diagram of the present invention.
Fig. 3 is the diagrammatic cross-section of upper half furnace body of the present invention.
It is marked in figure：1st, power plant, 2, locking device, 3-1, upper half furnace body, 3-2, lower half furnace body, 4, lifting lug, 5-1,
Upper half circular journal bearing, 5-2, lower half circular journal bearing, 6, driving belt, 7, pedestal, 8, reinforcing rib, 9, roll, 10, furnace shell, 11, heat preservation
Layer, 12, heating layer, 13, thermocouple.
Specific embodiment
Below in conjunction with the accompanying drawings, technical scheme of the present invention is further described by specific embodiment.
Embodiment 1：As shown in the figure, a kind of offline preheating device of hot-rolling mill roll, the device is by heating furnace, power plant 1
Formed with pedestal 7, power plant 1 is two motors, and is respectively fixedly disposed at the opposite both ends of pedestal 7, two motors it
Between heating furnace is set, heating furnace is in horizontal positioned Pear-Shaped or 8-shaped, by upper half furnace body 3-1 and lower half furnace body 3-2 pairings
Into lower half furnace body 3-2 is fixedly welded on by reinforcing rib 8 on pedestal 7, and upper half furnace body 3-1 is equipped with the lifting lug 4 of lifting, upper half
The end face junction of furnace body 3-1 and lower half furnace body 3-2 pairings is equipped with locking device 2, and the inner wall of upper half furnace body 3-1 is equipped with upper heating
Layer, the inner wall of lower half furnace body 3-2 are equipped with lower heating layer, the furnace structure of upper half furnace body 3-1 be followed successively by from inside to outside heating layer,
Insulating layer 11 and furnace shell 10, the furnace structure of lower half furnace body 3-2 are followed successively by lower heating layer, insulating layer 11 and furnace shell from inside to outside
10, after two furnace body pairings, heating layer 12 is closed by upper heating layer and lower heating layer, and surround one to a pair roller 9
The heating chamber of synchronous preheating, the heating chamber are made of left and right two chambers, and two chambers are set up in parallel and are connected, to be preheated
A pair roller 9 is lain in a horizontal plane in two chambers respectively, and the shaft shoulder at 9 both ends of roll is supported on the bearing at place chamber both ends,
The bearing is composed of upper half circular journal bearing 5-1 and lower half circular journal bearing 5-2,5-2 points of upper half circular journal bearing 5-1 and lower half circular journal bearing
An Zhuan not be on upper half furnace body 3-1 and lower half furnace body 3-2, the motor passes through driving belt 6 and 9 shaft shoulder exposed parts of roll
Connection.
Further, the distance between 9 body of roll of roll in heating chamber and heating layer 12 be 150mm, 9 roller of roll
The distance between the end face of body and the 9 place chamber end face of roll are 100mm.
Further, be respectively equipped on the upper heating layer of each chamber and lower heating layer one can independent temperature control heat
Galvanic couple 13,13 temperature measuring point of thermocouple are 50mm apart from 11 spacing of heating furnace insulating layer.
Further, the upper heating layer or lower heating layer are using crawler type ceramic electric heating layer, the heat preservation
Layer 11 is asbestos insulating layer.
Due to heating furnace chamber by upper half furnace body 3-1 and lower half furnace body 3-2 to being combined into, upper half furnace body
3-1 and lower half furnace body 3-2 is respectively provided with the semicircle cavity of composition chamber, in this way, in actual use, first rolling a pair
Roller 9 lifts be put into two semicircle cavitys of lower half furnace body 3-2 respectively, and 9 body of roll of roll is contained in half cylindrical cavity of lower half furnace body 3-2
In vivo, 9 shaft shoulder of roll is engaged with lower half circular journal bearing 5-2, and roll 9 is placed centrally relative to semicircle cavity；Then day is used
Vehicle lifts upper half furnace body 3-1 and is aligned, and pass through locking device 2 and locked with lower half furnace body 3-2 closures；Use driving belt 6
Power plant 1 with 9 shaft shoulder exposed parts of roll is connect, by pre-heating technique system requirement, 9 rotary speed of roll, rotation are set
Speed should be in the range of 1 ~ 20 rev/min, and controls roll 9 is opposite to rotate synchronously；Heating furnace power switch is opened, by pre- thermal technology
Skill system enactment preheats heating temperature, and heating temperature should be≤300 DEG C, temperature-controlled precision ± 10 DEG C.Furnace temp reaches technique and sets
When constant temperature is spent, the 9 preheating insulation time of start recording roll, when soaking time reaches process system requirement, heating furnace is disconnected immediately
And 1 power supply of power plant, removal driving belt 6, the locking device 2 of heating furnace is opened, upper half furnace body 3-1 is hung, taking-up is rolled
Roller 9, you can be packed into milling train and use.
Embodiment 2：On the basis of embodiment 1, between 9 body of roll of roll and heating layer 12 in heating chamber away from
From for 100mm, the distance between the end face of 9 body of roll of roll and the 9 place chamber end face of roll are 50mm, 13 temperature measuring point of thermocouple
The distance between insulating layer 11 is 60mm.
Embodiment 3：On the basis of embodiment 1, between 9 body of roll of roll and heating layer 12 in heating chamber away from
From for 200mm, the distance between the end face of 9 body of roll of roll and the 9 place chamber end face of roll are 150mm, 13 thermometric of thermocouple
The distance between point and insulating layer 11 are 40mm.
Claims (6)
1. a kind of offline preheating device of hot-rolling mill roll, it is characterised in that：Including heating furnace, pedestal（7）With two power plants
（1）, power plant（1）It is separately positioned on pedestal（7）Opposite both ends, two power plants（1）Between heating furnace is set, heat
Stove is in Pear-Shaped, by symmetrical upper half furnace body（3-1）With lower half furnace body（3-2）It involutes, along upper half furnace body（3-1）It is interior
The upper heating layer of wall setting, along lower half furnace body（3-2）The lower heating layer of inner wall setting, the upper heating layer and lower heating layer are crawler belt
Formula ceramic electric heating layer, in upper half furnace body（3-1）With lower half furnace body（3-2）After being combined into heating furnace, upper heating layer and it is lower plus
Thermosphere forms heating layer（12）, and by heating layer（12）Heating chamber is surrounded, heating chamber is divided into two side by side and the cylinder chamber of connection
Room, the both ends of chamber are respectively equipped with bearing, a pair roller to be preheated（9）It is individually placed in two chambers, makes roll（9）Both ends
The shaft shoulder be supported on bearing after, by power plant（1）Drive roll（9）Opposite rotation is synchronized in warm.
2. a kind of offline preheating device of hot-rolling mill roll according to claim 1, it is characterised in that：The heating layer（12）
For the internal layer of heating furnace body structure, in furnace structure, by heating layer（12）It is followed successively by insulating layer outward（11）And furnace shell（10）.
3. a kind of offline preheating device of hot-rolling mill roll according to claim 2, it is characterised in that：The insulating layer
（11）For asbestos insulating layer.
4. a kind of offline preheating device of hot-rolling mill roll according to claim 1, it is characterised in that：Roll（9）It is placed on
After in chamber, heating layer（12）With roll（9）The distance between body of roll >=100mm, and roll（9）It is rolled with this end face of the body of roll
Roller（9）The distance between place chamber end face >=50mm.
5. a kind of offline preheating device of hot-rolling mill roll according to claim 1, it is characterised in that：The lower half furnace body
（3-2）It is fixed at pedestal（7）On, upper half furnace body（3-1）Lifting lug equipped with lifting（4）, also, upper half furnace body（3-1）
With lower half furnace body（3-2）Between be equipped with locking device（2）.
6. a kind of offline preheating device of hot-rolling mill roll according to claim 1, it is characterised in that：It is equipped in the chamber
Thermocouple（13）, thermocouple（13）Temperature measuring point apart from insulating layer（11）50±10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610501627.4A CN106140820B (en) | 2016-06-30 | 2016-06-30 | A kind of offline preheating device of hot-rolling mill roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610501627.4A CN106140820B (en) | 2016-06-30 | 2016-06-30 | A kind of offline preheating device of hot-rolling mill roll |
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| Publication Number | Publication Date |
|---|---|
| CN106140820A CN106140820A (en) | 2016-11-23 |
| CN106140820B true CN106140820B (en) | 2018-06-12 |
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| CN201610501627.4A Active CN106140820B (en) | 2016-06-30 | 2016-06-30 | A kind of offline preheating device of hot-rolling mill roll |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796201A (en) * | 2018-08-09 | 2018-11-13 | 河南天利热工装备股份有限公司 | A kind of roll overlaying heating furnace |
| CN112296091A (en) * | 2020-10-16 | 2021-02-02 | 四川汇源钢建科技股份有限公司 | Intelligent roller preheating device and preheating method thereof |
| JP7420052B2 (en) * | 2020-11-04 | 2024-01-23 | トヨタ自動車株式会社 | Press roll device and method for controlling the press roll device |
| CN116329284B (en) * | 2023-05-15 | 2023-11-03 | 张家港扬子江冷轧板有限公司 | Roller preheating device |
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|---|---|---|---|---|
| DE542276C (en) * | 1927-12-19 | 1932-01-22 | Kenneth Younghusband | Electric heating device for rolls of hot rolling mills, in which the rolls are heated inductively by the heating coils |
| SU1377556A1 (en) * | 1986-07-07 | 1988-02-28 | Научно-Исследовательский Институт Санитарной Техники И Оборудования Зданий И Сооружений | Arrangement for recovering heat of rotating furnace |
| 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 |
| CN201334618Y (en) * | 2008-12-29 | 2009-10-28 | 汶瑞机械(山东)有限公司 | Press roll hot charging heater for double-roll press master |
| CN201387230Y (en) * | 2009-02-17 | 2010-01-20 | 扬州冶金机械有限公司 | Preheating furnace for build-up welding of roller |
| CN203448396U (en) * | 2013-08-28 | 2014-02-26 | 武汉钢铁(集团)公司 | Offline heating device used on CSP (compact strip production) online milling roll |
| CN205032476U (en) * | 2015-09-25 | 2016-02-17 | 光丰(肇庆)钢业有限公司 | Roll steam preheating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62267426A (en) * | 1986-05-15 | 1987-11-20 | Kobe Steel Ltd | Heat treatment device for roll |
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2016
- 2016-06-30 CN CN201610501627.4A patent/CN106140820B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE542276C (en) * | 1927-12-19 | 1932-01-22 | Kenneth Younghusband | Electric heating device for rolls of hot rolling mills, in which the rolls are heated inductively by the heating coils |
| SU1377556A1 (en) * | 1986-07-07 | 1988-02-28 | Научно-Исследовательский Институт Санитарной Техники И Оборудования Зданий И Сооружений | Arrangement for recovering heat of rotating furnace |
| 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 |
| CN201334618Y (en) * | 2008-12-29 | 2009-10-28 | 汶瑞机械(山东)有限公司 | Press roll hot charging heater for double-roll press master |
| CN201387230Y (en) * | 2009-02-17 | 2010-01-20 | 扬州冶金机械有限公司 | Preheating furnace for build-up welding of roller |
| CN203448396U (en) * | 2013-08-28 | 2014-02-26 | 武汉钢铁(集团)公司 | Offline heating device used on CSP (compact strip production) online milling roll |
| CN205032476U (en) * | 2015-09-25 | 2016-02-17 | 光丰(肇庆)钢业有限公司 | Roll steam preheating device |
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| CN106140820A (en) | 2016-11-23 |
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