CN103331302B - Device and method for improving finishing temperature of oriented silicon steel - Google Patents
Device and method for improving finishing temperature of oriented silicon steel Download PDFInfo
- Publication number
- CN103331302B CN103331302B CN201310291240.7A CN201310291240A CN103331302B CN 103331302 B CN103331302 B CN 103331302B CN 201310291240 A CN201310291240 A CN 201310291240A CN 103331302 B CN103331302 B CN 103331302B
- Authority
- CN
- China
- Prior art keywords
- hot
- finishing temperature
- steel
- thermal insulation
- steel form
- 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.)
- Active
Links
Landscapes
- Metal Rolling (AREA)
Abstract
The invention relates to a device and method for improving a finishing temperature of oriented silicon steel. The device comprises two hot mill rails, a steel template and a heat insulation plate are arranged on the hot mill rails, the steel template is arranged on the hot mill rails along the hot mill rails, the two sides of the steel template are bent downward to form side plates, the two hot mill rails are clamped between the two side plates, the two ends of the steel template are bent downward to form baffles, the two hot mill rails are clamped between the two baffles at the two ends of the steel template, the heat insulation plate is arranged on the steel template, and the heat insulation plate is fixed on the steel template through pressing strips. The method includes the step of enabling a forging stock to keep making contact with the heat insulation plate which is fixed on the hot mill rails. Through the device and method for improving the finishing temperature of the oriented silicon steel, the average finishing temperature of hot rolled plates is increased from 865 DEG C to 901 DEG C, the average magnetic induction intensity is increased from 1.865T to 1.895T, and the product percent of pass is increased from 52% to 93%.
Description
Technical field
The present invention relates to a kind of devices and methods therefor improving orientation silicon steel finishing temperature.
Background technology
Orientation silicon steel especially low-temperature heat (1150 DEG C ~ 1250 DEG C) requirement of orientation silicon steel to finishing temperature is that temperature is high as far as possible, and raising finishing temperature is recrystallization and grain growth in order to promote hot rolled plate.Low-temperature heat, high-temperature final rolling be the difficult point of low-temperature heating oriented silicon iron hot rolling technique and weak link just.In order to ensure finishing temperature and uniformity thereof, prior art increases workpiece thickness, or on hot rolling line, install induction type Edge Heating device.Increase the restriction that workpiece thickness is subject to milling train finish rolling ability, simultaneously in order to ensure hot rolled plate plate shape and final products magnetic property, hot rolling reduction ratio also has certain limit to limit, and it is very limited that workpiece thickness increases scope.Therefore, increase the method narrow application range that workpiece thickness ensures orientation silicon steel hot rolling finishing temperature, be not especially suitable for the orientation silicon steel that final products are thinner, as 0.23mm, 0.20mm and 0.18mm product.Hot rolling line is installed induction type Edge Heating device, certain effect is had along hot rolled plate cross direction profiles uniformity for raising finishing temperature and guarantee temperature, but this plant investment is high, be not especially suitable for the small hot mill equipment of small-sized orientation silicon steel factory or scientific research institutions.
Summary of the invention
In order to overcome the above-mentioned deficiency of the device of existing raising orientation silicon steel finishing temperature, the invention provides a kind of production cost low, structure simply improves the device of orientation silicon steel finishing temperature.A kind of method improving orientation silicon steel finishing temperature is provided simultaneously.
Design of the present invention utilizes that heat-barrier material (as asbestos) is heat-resisting, the feature of poor thermal conductivity, at hot-rolling mill track upper berth thermal insulation board, under the prerequisite not affecting hot rolling technology execution and plate shape, meet the hot rolling technology requirement of orientation silicon steel low-temperature heat, high-temperature final rolling, avoid milling train track simultaneously and contact the temperature that causes with hot rolled plate along the uneven problem of hot rolled plate cross direction profiles, ensure that the uniformity of hot rolling finishing temperature.Thermal insulation board must be fixed on one piece and can to play a supporting role and on the steel form matched with hot-rolling mill track, the stainless steel cold-rolled plate of heat-resisting, easy processing, thickness 2 ~ 4mm selected by steel form.
The device of this raising orientation silicon steel finishing temperature comprises two hot-rolling mill tracks, it is characterized in that: hot-rolling mill track is installed with steel form and thermal insulation board, the material of steel form is the cold-reduced sheet of thickness 2 ~ 4mm, steel form as the gripper shoe of thermal insulation board along hot-rolling mill track installation (button) on hot-rolling mill track, the both sides of steel form are converted into side plate downwards, two hot-rolling mill tracks are stuck between two side plates, baffle plate is bent into downwards at the two ends of steel form, every one end is minimum one piece of baffle plate, and two hot rolling tracks are stuck between the baffle plate at two ends.On steel form, be installed with (button) thermal insulation board, the width of thermal insulation board is not more than steel form (width) 10mm, and thermal insulation board press strip is fixed on steel form, and two ends and the steel form of press strip weld together.
The device of above-mentioned raising orientation silicon steel finishing temperature, is characterized in that: the material stainless steel cold-rolled plate of described steel form.
The device of above-mentioned raising orientation silicon steel finishing temperature, is characterized in that: asbestos board or the micarex of described thermal insulation board to be thickness be 3-5mm.
The device of above-mentioned raising orientation silicon steel finishing temperature, is characterized in that: asbestos board or the micarex of described thermal insulation board to be thickness be 3-4mm.
The method of this raising orientation silicon steel finishing temperature be forging stock in the hot rolling, directly contact with the thermal insulation board be fixed on above hot-rolling mill track all the time.Thermal insulation board is fixed together by the steel form installed on (being buckled in) hot-rolling mill track and hot-rolling mill track.
The method of above-mentioned raising orientation silicon steel finishing temperature, is characterized in that: asbestos board or the micarex of described thermal insulation board to be thickness be 3-5mm.
Present method avoids hot-rolling mill bar shaped track and hot rolled plate and directly contact the temperature that causes along the uneven problem of hot rolled plate cross direction profiles, ensure that the uniformity of hot rolling finishing temperature.Meanwhile, hot rolled plate directly contacts with the track of band heat-barrier material, reduces heat transfer, meets the hot rolling technology requirement of orientation silicon steel low-temperature heat, high-temperature final rolling.
Beneficial effect of the present invention
Can improve finishing temperature, finishing temperature is obviously improved along hot rolled plate cross direction profiles uniformity, and corresponding final products magnetic property disqualification rate reduces.According to orientation silicon steel magnetic strength and hot rolling finishing temperature relation, iron loss and the test of hot rolling finishing temperature relation, the test of product percent of pass, track thermal insulation board is adopted to spread the structure covered, average finishing temperature brings up to 901 DEG C from 865 DEG C, average magnetic induction intensity brings up to 1.895T from 1.865T, and product percent of pass brings up to 93% by 52%.
Accompanying drawing explanation
Fig. 1 is the top view of the device embodiment of this raising orientation silicon steel finishing temperature.
Fig. 2 is the left view corresponding with Fig. 1, and relative Fig. 1 amplifies, left-handed 90 °, rail supported base plate partly cut-away.
Fig. 3 is the sectional view along A-A line in Fig. 1, and relative Fig. 1 amplifies, left-handed 90 °.
In above-mentioned figure
:
1-steel form, 2-asbestos board, 3-press strip, 4-siding track, 5-hot-rolling mill track
6-baffle plate, 7-side plate, 8-dull and stereotyped 9-rail supported base plate.
Detailed description of the invention
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing and embodiment, but the specific embodiment of the present invention is not limited to following embodiment.
device embodiment
the structure of the present embodiment is shown in Fig. 1, Fig. 2 and Fig. 3, it is on two hot-rolling mill tracks 5 of ￠ 450 × 350mm two-roller reversible Rapid Thermal milling train, the gripper shoe of steel form 1 as the asbestos board 2 of thermal insulation board is buckled along hot-rolling mill track 5, the both sides of steel form 1 are converted into side plate 7 downwards, the above dull and stereotyped 8 is covered on two hot-rolling mill tracks 5, two hot-rolling mill tracks 5 are stuck between two side plates 7, baffle plate 6 is bent into downwards at the two ends of steel form 1, there are two pieces of baffle plates 6 every one end, respectively there is one piece of baffle plate 6 at the two ends of each root hot-rolling mill track 5, two hot-rolling mill tracks 5 are stuck between four pieces of baffle plates 6.On steel form 1, be installed with the width asbestos board equal with steel form 12, asbestos board 2 press strip 3 is fixed on steel form 1, and two ends and the steel form 1 of press strip 3 weld together.
The steel form 1 of the present embodiment is the stainless steel cold-rolled plate with thickness 2mm, and the thickness of asbestos board 2 is 3mm.
embodiment of the method
the mass percent of C, the Si of the orientation silicon steel forging stock of the following examples hot rolling, Mn, Als, N and Cr is:
C 0.053％； Si 3.45％； Mn 0.12％； Als 0.028％；
N 0.0078％； Cr 0.12％；
The length of orientation silicon steel forging stock is 110mm, and thickness is 35mm, is hot-rolled down to 2.02mm thick.
Forging stock is in the operation of rolling, all the time directly contact with the asbestos board 2 be fixed on above hot-rolling mill track 5, avoid hot-rolling mill track 5 and hot rolled plate and directly contact the temperature that causes along the uneven problem of hot rolled plate cross direction profiles, ensure that the uniformity of hot rolling finishing temperature.Meanwhile, the hot rolling technology requirement of orientation silicon steel low-temperature heat, high-temperature final rolling is met.
Adopt once cold rolling method to be cold-rolled to 0.23mm after making a practice of process thick, after the operations such as decarburizing annealing, nitriding, high annealing, finished product detects through epstein frame, and the magnetic property of five embodiments of the present invention and three comparative examples and qualification rate are in table 1.
Table 1
| Embodiment | Track structure | Finishing temperature (DEG C) | Magnetic induction intensity (T) |
| Embodiment 1 | Track installation asbestos board | 896 | 1.885 |
| Embodiment 2 | Track installation asbestos board | 898 | 1.887 |
| Embodiment 3 | Track installation asbestos board | 901 | 1.890 |
| Embodiment 4 | Track installation asbestos board | 903 | 1.901 |
| Embodiment 5 | Track installation asbestos board | 905 | 1.910 |
| Comparative example 1 | Track is without asbestos board | 863 | 1.864 |
| Comparative example 2 | Track is without asbestos board | 865 | 1.866 |
| Comparative example 3 | Track is without asbestos board | 866 | 1.865 |
Claims (4)
1. improve a device for orientation silicon steel finishing temperature, it comprises two hot-rolling mill tracks, it is characterized in that:
Hot-rolling mill track is installed with steel form and thermal insulation board, the material of steel form is the cold-reduced sheet of thickness 2 ~ 4mm, steel form as the gripper shoe of thermal insulation board along hot-rolling mill track installation on hot-rolling mill track, the both sides of steel form are converted into side plate downwards, two hot-rolling mill tracks are stuck between two side plates, be bent into baffle plate downwards at the two ends of steel form, every one end is minimum one piece of baffle plate, and two hot rolling tracks are stuck between the baffle plate at two ends; On steel form, be installed with thermal insulation board, the width of thermal insulation board is not more than steel form 10mm, and thermal insulation board press strip is fixed on steel form.
2. the device of raising orientation silicon steel finishing temperature according to claim 1, is characterized in that: the material stainless steel cold-rolled plate of described steel form.
3. the device of raising orientation silicon steel finishing temperature according to claim 1 and 2, is characterized in that: asbestos board or the micarex of described thermal insulation board to be thickness be 3-5mm.
4. the device of raising orientation silicon steel finishing temperature according to claim 3, is characterized in that: asbestos board or the micarex of described thermal insulation board to be thickness be 3-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291240.7A CN103331302B (en) | 2013-07-12 | 2013-07-12 | Device and method for improving finishing temperature of oriented silicon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291240.7A CN103331302B (en) | 2013-07-12 | 2013-07-12 | Device and method for improving finishing temperature of oriented silicon steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103331302A CN103331302A (en) | 2013-10-02 |
| CN103331302B true CN103331302B (en) | 2015-07-15 |
Family
ID=49239544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310291240.7A Active CN103331302B (en) | 2013-07-12 | 2013-07-12 | Device and method for improving finishing temperature of oriented silicon steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103331302B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597843A (en) * | 2017-07-31 | 2018-01-19 | 山西太钢不锈钢股份有限公司 | The method for rolling stainless steel hot plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463585A (en) * | 1977-05-04 | 1984-08-07 | Laws William R | Heat shield arrangement for a rolling mill |
| CN1743127A (en) * | 2005-09-29 | 2006-03-08 | 东北大学 | Method for producing oriented silicon steel band by continuous casting and rolling of thin plate slab |
| CN101939119A (en) * | 2008-01-17 | 2011-01-05 | Ihi金属生产设备科技株式会社 | Carrying apparatus and hot-rolling apparatus, and carrying method and hot-rolling method |
| CN102102141A (en) * | 2009-12-22 | 2011-06-22 | 鞍钢股份有限公司 | Hot rolling process for improving structural homogeneity of oriented silicon steel plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0225212A (en) * | 1988-07-12 | 1990-01-26 | Sumitomo Metal Ind Ltd | Heat keeping method for high temperature steel material carrying line |
-
2013
- 2013-07-12 CN CN201310291240.7A patent/CN103331302B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463585A (en) * | 1977-05-04 | 1984-08-07 | Laws William R | Heat shield arrangement for a rolling mill |
| CN1743127A (en) * | 2005-09-29 | 2006-03-08 | 东北大学 | Method for producing oriented silicon steel band by continuous casting and rolling of thin plate slab |
| CN101939119A (en) * | 2008-01-17 | 2011-01-05 | Ihi金属生产设备科技株式会社 | Carrying apparatus and hot-rolling apparatus, and carrying method and hot-rolling method |
| CN102102141A (en) * | 2009-12-22 | 2011-06-22 | 鞍钢股份有限公司 | Hot rolling process for improving structural homogeneity of oriented silicon steel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103331302A (en) | 2013-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103521518B (en) | The hot continuous rolling process of stainless plate strip coil | |
| CN101209459A (en) | Method for cold rolling high silicon electric steel | |
| CN102172830B (en) | Compound production line system | |
| CN103433320B (en) | A kind of processing method being prepared titanium anode plate by Titanium board base | |
| CN104971959A (en) | High-strength closed sectional material hot roll forming process | |
| CN101362147B (en) | Rolling and cooling controlled hot-rolling test rolling mill | |
| CN108817132A (en) | A kind of warm method for aligning of pure titanium and low-intensity titanium alloy sheet | |
| CN103331302B (en) | Device and method for improving finishing temperature of oriented silicon steel | |
| CN102941255B (en) | Online roll bending forming technology for super-strength pipe piece | |
| CN101792847A (en) | Direct thermal treatment process technology after rolling steel plate | |
| CN102560236B (en) | Preparation method of common oriented silicon steel | |
| CN102851464A (en) | Annealing technique of SUS410S martensitic stainless steel hot-rolled plate | |
| CN102140574B (en) | Annealing process for improving deep drawability of 430 ferrite stainless steel | |
| CN102534364B (en) | Production method capable of improving magnetic property of common grain-oriented silicon steel | |
| CN204058549U (en) | A kind of hot rolled strip annealing furnace by-pass collar | |
| CN103572037A (en) | Steel hot-rolled coil plate collinear heat treatment production line and production technique thereof | |
| CN201915123U (en) | Metal strip heat treatment waste heat recovery device with double-layer structure | |
| CN203546105U (en) | Collinear heat treatment production line for hot-rolled coiled materials and sheet materials of steel | |
| CN102010976A (en) | Steel belt heat treatment waste heat recovery device with bilayer structure | |
| CN110653270B (en) | Hot-rolled medium-thickness steel plate laminar flow semi-automatic control method | |
| CN108339851B (en) | A kind of cold rolling of oriented silicon steel strip in razor-thin and method for annealing | |
| JP2016204688A (en) | Heat treatment method and truck type heat treatment furnace | |
| CN201669280U (en) | Cooling blowing device for cold rolled strips | |
| CN103394519A (en) | Method for controlling shapes of thin steel plates | |
| CN106929662B (en) | A kind of continuous annealing method of hot press-formed steel |
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 |