CN105499275A - Second intermediate roll of Senjimier rolling mill - Google Patents
Second intermediate roll of Senjimier rolling mill Download PDFInfo
- Publication number
- CN105499275A CN105499275A CN201510890796.7A CN201510890796A CN105499275A CN 105499275 A CN105499275 A CN 105499275A CN 201510890796 A CN201510890796 A CN 201510890796A CN 105499275 A CN105499275 A CN 105499275A
- Authority
- CN
- China
- Prior art keywords
- roll
- curve
- calender rolls
- rolling
- intermediate calender
- 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
- 238000005096 rolling process Methods 0.000 title abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000003801 milling Methods 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 abstract description 46
- 239000010959 steel Substances 0.000 abstract description 46
- 238000012360 testing method Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 241000931705 Cicada Species 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
Classifications
-
- 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
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/18—Roll crown; roll profile
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention discloses a second intermediate roll of a Senjimier rolling mill. The second intermediate roll comprises a transmission side roll end, an operation side roll end, and a roll body connected with the transmission side roll end and the operation side roll end and positioned between the transmission side roll end and the operation side roll end, wherein a roll-shaped curve of the roll body includes three parts: the middle part is a straight line; the end part is a sine wave; and an arc is connected with the straight line and the sine wave; and the roll-shaped curve is an axial symmetry curve. Several second intermediate rolls with special shapes are provided in the technical scheme, and the roll-shaped curve of the roll body consists of the straight line, the sine wave and the arc, so that the technical problems of low rolling stability, frequency strip break and bad plate shape during rolling of the second intermediate roll in the prior art are solved, the deviation in the narrow strip steel rolling process can be effectively prevented, the strip break probability is reduced, and the bad plate shape problem caused by weak rigidity of the rolling mill in rolling of hard strip steel is improved.
Description
Technical field
The present invention relates to technical field of steel rolling, particularly a kind of second intermediate calender rolls of gloomy base Mil milling train.
Background technology
Gloomy base Mil milling train is also known as 20 roller mills, and invented by doctor Sen Ji meter, because of its good rigidly, work roll diameter is little, can provide large draught pressure, therefore becomes one of capital equipment of silicon steel rolling, is usually used in that rolling hardness is higher, the band of thinner thickness.
Many, the stressed complexity of gloomy base Mil roller system of rolling mill, usually comprise and organize roll more, often organize and all comprise working roll, first intermediate roll and the second intermediate calender rolls.Second intermediate calender rolls of the prior art is when rolling, along with the reason such as change and the fluctuation of supplied materials cross dimensions of rolled band steel width, hardness, there will be rolling stability declines to a great extent, and broken belt is frequent, and the problem of deformed steel strip, have a strong impact on unit production capacity and played and product quality.
Visible, in prior art, the second intermediate calender rolls exists when rolling that rolling stability is low, broken belt is frequent, and the technical problem of deformed steel strip.
Summary of the invention
The embodiment of the present invention provides a kind of second intermediate calender rolls of gloomy base Mil milling train, and for solve in prior art, the second intermediate calender rolls rolling stability when rolling is low, broken belt frequent, and the technical problem of deformed steel strip.
The embodiment of the present application provides a kind of second intermediate calender rolls of gloomy base Mil milling train, comprising:
Transmission side roller end, fore side roller end;
The body of roll, is connected with described fore side roller end with described transmission side roller end, between described transmission side roller end and described fore side roller end;
Wherein, the roll shape curve of the described body of roll comprises three parts: middle part is straight line; End is sine curve; What be connected with described sine curve with described straight line is circular arc, and described roll shape curve is axial symmetry curve.
Optionally, the convexity of the described body of roll is specially 100-210 μm.
Optionally, the straight length of described roll shape curve is 300-600mm.
Optionally, the end of described roll shape curve is specially the sine curve of sin9 °-sin20 °.
Optionally, the radius of the circular arc of described roll shape curve is 10000-30000mm, and the radian of described circular arc is 1-5mm.
Optionally, the convexity of the described body of roll is 180 μm, and the straight length of described roll shape curve is 450mm, and the end of described roll shape curve is sin15 ° of sine curve.
Optionally, the convexity of the described body of roll is 190 μm, and the straight length of described roll shape curve is 410mm, and the end of described roll shape curve is sin18 ° of sine curve.
Above-mentioned one or more technical scheme in the embodiment of the present application, at least has following technique effect:
By providing a kind of second intermediate calender rolls of special shape, the roll shape curve of the body of roll is made up of straight line, sine curve and circular arc, solve the second intermediate calender rolls in prior art exist when rolling rolling stablize low, broken belt is frequent, and the technical problem of deformed steel strip, effectively can prevent the sideslip of the ribbon steel operation of rolling, reduce broken belt probability, improve the deformed steel strip problem brought because mill stiffness during rolling stiff ribbon steel is not enough simultaneously.
Accompanying drawing explanation
The schematic diagram of the second intermediate calender rolls of a kind of gloomy base Mil milling train that Fig. 1 provides for the embodiment of the present application;
The roll shape curve schematic diagram of the second intermediate calender rolls of a kind of gloomy base Mil milling train that Fig. 2 provides for the embodiment of the present application.
Detailed description of the invention
In the technical scheme that the embodiment of the present application provides, by providing a kind of second intermediate calender rolls of special shape, the roll shape curve of the body of roll is made up of straight line, sine curve and circular arc, solve the second intermediate calender rolls in prior art exist when rolling rolling stablize low, broken belt is frequent, and the technical problem of deformed steel strip, effectively can prevent the sideslip of the ribbon steel operation of rolling, reduce broken belt probability, improve the deformed steel strip problem brought because mill stiffness during rolling stiff ribbon steel is not enough simultaneously.
Below in conjunction with accompanying drawing, the main of the embodiment of the present application technical scheme is realized principle, detailed description of the invention and be explained in detail the beneficial effect that should be able to reach.
Embodiment
Please refer to Fig. 1 and Fig. 2, a kind of second intermediate calender rolls of gloomy base Mil milling train, comprising:
Transmission side roller end 1, fore side roller end 3;
The body of roll 2, is connected with described fore side roller end 3 with described transmission side roller end 1, between described transmission side roller end 1 and described fore side roller end 3;
Wherein, the roll shape curve of the described body of roll 2 comprises three parts: middle part is straight line; End is sine curve; What be connected with described sine curve with described straight line is circular arc, and described roll shape curve is axial symmetry curve.The body of roll 2 be symmetry axis with radial centre lines, two ends are symmetrical.
Concrete, the convexity of the body of roll 2 of the second intermediate calender rolls is specifically as follows 100-210 μm.The middle part straight length of the roll shape curve of the body of roll 2 is 300-600mm, and end curve is the sine curve of sin9 °-sin20 °, is connected between straight line with sine curve by circular arc, and the radius of circular arc is 10000-30000mm, and the radian of circular arc is 1-5mm.
The roll shape curve two ends of the second intermediate calender rolls are sine curve, be with steel to be subject to the rightabout active force of sine curve, prevent strip running deviation, ensure that rolling stability in the operation of rolling, reduce the edge thinning that steel edge portion produces because of roll bending distortion simultaneously.Convexity is larger, band steel more not easily sideslip, if convexity is excessive simultaneously, causes depressing in the middle part of band steel excessive, produces middle wave, deformed steel strip.Therefore in actual production, need the width according to incoming band steel, hardness and wedge shape fluctuation size to select suitable convex value.
Using method:
According to rolled band steel width, hardness and wedge shape fluctuation size, determine the convex value of embodiment of the present invention roll shape curve and the body of roll, the curvilinear equation provided according to the embodiment of the present invention between notice grinding roller carries out grinding.Before rolling, extract working roll, the intermediate calender rolls in milling train out, then replace the upper and lower driven voller of the second intermediate calender rolls in milling train by the embodiment of the present invention processed, load onto an intermediate calender rolls and working roll can start rolling.The second intermediate calender rolls roll shape that the application of the invention embodiment provides, finds: more stable when the band steel that the rolling limit narrow width band steel, hardness are high and the band steel that raw material wedge shape fluctuates large, sideslip, broken belt rate significantly do not decline, and belt plate shape is good.
Experimental example 1
Cold-strip steel raw material width is 950mm (design Breadth Maximum is 1300mm, belongs to narrow width band steel), yield strength is 1250MPa (belonging to high-intensity band steel).The both ends of the roll shape curve of the second intermediate calender rolls are sin15 ° of sine curve, and in the middle part of curve, straight length is 450mm, and convexity is 180 μm.
Before rolling, prepare the band steel of the same specification of 10 volume, hardness, use the upper and lower driven voller embodiment of the present invention being replaced milling train second intermediate calender rolls.
Before test, each prepare common second intermediate calender rolls and the embodiment of the present invention each a set of, rolling 5 coil carries out contrast test respectively, and wherein common second intermediate calender rolls roll surface is without roll shape, belongs to plain-barreled roll.
Process of the test: the band steel selecting the same width of 10 volume, same hardness, is operated by same operator.Front 5 volumes adopt common second intermediate calender rolls rolling, and the second intermediate calender rolls that rear 5 volumes adopt the embodiment of the present invention to provide is rolled.Test data is as following table 1.
The second intermediate calender rolls Contrast on effect table that common second intermediate calender rolls of table 1 and experimental example of the present invention 1 provide
As can be seen from Table 1, the plate shape qualification rate of the second intermediate calender rolls rolling that the embodiment of the present invention provides rises 20%, and broken belt number of times reduces 9 times, improves 40% with plate difference ratio.
Experimental example 2
Cold-strip steel raw material width is that (design Breadth Maximum is 1300mm to 980mm, belong to narrow width band steel), yield strength is 1200MPa (belonging to high-intensity band steel), raw material wedge shape fluctuation ± 80 μ (for ± 30 μ, the fluctuation of this wedge shape is larger for wedge shape fluctuation standard).The both ends of the roll shape curve of the second intermediate calender rolls are sin18 ° of sine curve, and in the middle part of curve, straight length is 410mm, and convexity is 190 μm.
Before rolling, prepare the band steel of the same specification of 20 volume, hardness, use the upper and lower driven voller embodiment of the present invention being replaced milling train second intermediate calender rolls.
Before test, each prepare common second intermediate calender rolls and the embodiment of the present invention each a set of, rolling 10 coil carries out contrast test respectively, and wherein common second intermediate calender rolls roll surface is without roll shape, belongs to plain-barreled roll.
Process of the test: the band steel selecting the same width of 20 volume, same hardness, is operated by same operator.Front 10 volumes adopt common second intermediate calender rolls rolling, and the second intermediate calender rolls that rear 10 volumes adopt the embodiment of the present invention to provide is rolled.Test data is as following table 2.
The second intermediate calender rolls Contrast on effect table that common second intermediate calender rolls of table 2 and experimental example of the present invention 2 provide
As can be seen from Table 2, the plate shape qualification rate of the second intermediate calender rolls rolling that the embodiment of the present invention provides rises 17%, and broken belt number of times reduces 20 times, improves 50% with plate difference ratio.
The second intermediate calender rolls that the embodiment of the present invention provides, effectively can ensure the band steel stable rolling that the fluctuation of ribbon steel, stiff ribbon steel and raw material wedge shape is larger, the every monthly average of plate shape qualification rate is promoted to few 17%, broken belt number of times is decreased average 20% monthly, production board shape obtains obvious improvement, improves 40-50% with the every monthly average of plate difference ratio.
By the one or more technical schemes in the embodiment of the present application, following one or more technique effect can be realized:
By providing a kind of second intermediate calender rolls of special shape, the roll shape curve of the body of roll is made up of straight line, sine curve and circular arc, solve the second intermediate calender rolls in prior art exist when rolling rolling stablize low, broken belt is frequent, and the technical problem of deformed steel strip, effectively can prevent the sideslip of the ribbon steel operation of rolling, reduce broken belt probability, improve the deformed steel strip problem brought because mill stiffness during rolling stiff ribbon steel is not enough simultaneously.
In addition, for the band steel that raw material wedge shape is larger, the second intermediate calender rolls roll shape provided by the invention can its sideslip problem of effectively low control, ensures to produce along steady.Meanwhile, the second intermediate calender rolls roll forming provided by the invention can effective control cincture steel edge thinning, improves band steel with plate difference grade.Wherein 0.5mm is with steel to bring up to 80-90% with the ratio being less than or equal to 10 μm of plate difference by original 30-40%%.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. second intermediate calender rolls of gloomy base Mil milling train, is characterized in that, comprising:
Transmission side roller end, fore side roller end;
The body of roll, is connected with described fore side roller end with described transmission side roller end, between described transmission side roller end and described fore side roller end;
Wherein, the roll shape curve of the described body of roll comprises three parts: middle part is straight line; End is sine curve; What be connected with described sine curve with described straight line is circular arc, and described roll shape curve is axial symmetry curve.
2. the second intermediate calender rolls of gloomy base Mil milling train as claimed in claim 1, it is characterized in that, the convexity of the described body of roll is specially 100-210 μm.
3. the second intermediate calender rolls of gloomy base Mil milling train as claimed in claim 1 or 2, is characterized in that, the straight length of described roll shape curve is 300-600mm.
4. the second intermediate calender rolls of gloomy base Mil milling train as claimed in claim 1 or 2, is characterized in that, the end of described roll shape curve is specially the sine curve of sin9 °-sin20 °.
5. the second intermediate calender rolls of gloomy base Mil milling train as claimed in claim 1 or 2, is characterized in that, the radius of the circular arc of described roll shape curve is 10000-30000mm, and the radian of described circular arc is 1-5mm.
6. the second intermediate calender rolls of gloomy base Mil milling train as claimed in claim 1 or 2, is characterized in that, the convexity of the described body of roll is 180 μm, and the straight length of described roll shape curve is 450mm, and the end of described roll shape curve is sin15 ° of sine curve.
7. the second intermediate calender rolls of gloomy base Mil milling train as claimed in claim 1 or 2, is characterized in that, the convexity of the described body of roll is 190 μm, and the straight length of described roll shape curve is 410mm, and the end of described roll shape curve is sin18 ° of sine curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510890796.7A CN105499275B (en) | 2015-12-07 | 2015-12-07 | A kind of second intermediate calender rolls of gloomy base Mil milling train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510890796.7A CN105499275B (en) | 2015-12-07 | 2015-12-07 | A kind of second intermediate calender rolls of gloomy base Mil milling train |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105499275A true CN105499275A (en) | 2016-04-20 |
| CN105499275B CN105499275B (en) | 2017-11-28 |
Family
ID=55707794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510890796.7A Active CN105499275B (en) | 2015-12-07 | 2015-12-07 | A kind of second intermediate calender rolls of gloomy base Mil milling train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105499275B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538875A (en) * | 2019-08-27 | 2019-12-06 | 山西太钢不锈钢股份有限公司 | Roller profile for eliminating edge contact part peeling of continuous rolling mill support roller |
| CN114260316A (en) * | 2020-09-16 | 2022-04-01 | 宝山钢铁股份有限公司 | Driven roller shape of second intermediate roller of sendzimir mill |
| CN114850218A (en) * | 2022-07-05 | 2022-08-05 | 太原理工大学 | Rolling device and method for high-bending-resistance stainless steel/bridge steel composite plate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202001B (en) * | 2019-06-12 | 2020-11-24 | 山西太钢不锈钢精密带钢有限公司 | Roll system preparation method for rolling ultrathin ultra-wide stainless steel product and rolling method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03294005A (en) * | 1990-04-11 | 1991-12-25 | Kawasaki Steel Corp | Hot finishing mill, hot finishing mill line and hot finish rolling method |
| CN101045240A (en) * | 2006-03-29 | 2007-10-03 | 宝山钢铁股份有限公司 | Higher degree roller ablet to control edge shape of steel band |
| CN201033331Y (en) * | 2007-05-23 | 2008-03-12 | 北京中钢贸科技发展有限公司 | Working roller type for the twenty-roller |
| CN101254508A (en) * | 2008-01-30 | 2008-09-03 | 武汉钢铁(集团)公司 | Work roll with steel rim drop-control and flat degree control |
-
2015
- 2015-12-07 CN CN201510890796.7A patent/CN105499275B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03294005A (en) * | 1990-04-11 | 1991-12-25 | Kawasaki Steel Corp | Hot finishing mill, hot finishing mill line and hot finish rolling method |
| CN101045240A (en) * | 2006-03-29 | 2007-10-03 | 宝山钢铁股份有限公司 | Higher degree roller ablet to control edge shape of steel band |
| CN201033331Y (en) * | 2007-05-23 | 2008-03-12 | 北京中钢贸科技发展有限公司 | Working roller type for the twenty-roller |
| CN101254508A (en) * | 2008-01-30 | 2008-09-03 | 武汉钢铁(集团)公司 | Work roll with steel rim drop-control and flat degree control |
Non-Patent Citations (1)
| Title |
|---|
| 张清东等: "UCMW冷连轧机组各架中间辊端部辊形", 《北京科技大学学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538875A (en) * | 2019-08-27 | 2019-12-06 | 山西太钢不锈钢股份有限公司 | Roller profile for eliminating edge contact part peeling of continuous rolling mill support roller |
| CN110538875B (en) * | 2019-08-27 | 2020-11-06 | 山西太钢不锈钢股份有限公司 | Roller profile for eliminating edge contact part peeling of continuous rolling mill support roller |
| CN114260316A (en) * | 2020-09-16 | 2022-04-01 | 宝山钢铁股份有限公司 | Driven roller shape of second intermediate roller of sendzimir mill |
| CN114260316B (en) * | 2020-09-16 | 2024-04-05 | 宝山钢铁股份有限公司 | Driven roller of second intermediate roller of Sendzimir mill |
| CN114850218A (en) * | 2022-07-05 | 2022-08-05 | 太原理工大学 | Rolling device and method for high-bending-resistance stainless steel/bridge steel composite plate |
| CN114850218B (en) * | 2022-07-05 | 2022-09-23 | 太原理工大学 | Rolling device and method for high-bending-resistance stainless steel/bridge steel composite plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105499275B (en) | 2017-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105499275A (en) | Second intermediate roll of Senjimier rolling mill | |
| EP2292341A3 (en) | Rolling mill having work roll shifting function | |
| CN105189379A (en) | Method for scribing tempered glass sheet | |
| CN110732560A (en) | novel hot continuous rolling strip steel supporting roll and manufacturing method thereof | |
| CN102688889B (en) | Intermediate roll form of cold continuous mill | |
| CN109715570A (en) | The manufacturing method of glass plate | |
| US20160368810A1 (en) | Cutting wheel for cutting brittle material | |
| CN217095002U (en) | Sizing mill | |
| CN103286137B (en) | Supporting roller of rolling mill for wide and thick plates | |
| US9776825B2 (en) | Folding roller module with combined bearing unit | |
| CN102632081B (en) | Hot-rolling rough mill structure | |
| CN101259485A (en) | 20 high mill intermediate roller cone | |
| CN101683657A (en) | Roll forming of backup roll suitable for asymmetrical curve roll shape work roll | |
| CN208960621U (en) | A kind of cold-rolling intermediate roll | |
| CN204122462U (en) | A kind of many roll stacks are fit | |
| US10940515B2 (en) | Milling apparatus | |
| JP6277566B1 (en) | Work roll for cold rolling and cold rolling method | |
| CN101279329A (en) | Method for controlling contact pressure peak value between rolls of HC series rolling mill and roller | |
| CN201389551Y (en) | Middle roll of twenty high rolling mill | |
| CN107297946A (en) | A kind of laser roller that site is repaiied with thin stroke | |
| CN204638946U (en) | A kind of blanking line buffer roll structure | |
| CN102284490A (en) | Cross wedge rolling die | |
| CN203356504U (en) | Hot-rolled plate capable of avoiding ridge buckles on cold-rolled thin strip steel in rolling process | |
| CN103434879B (en) | Holding paper roll structure | |
| CN202319087U (en) | Folding roll used on tissue processing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200430 Address after: 100040 Shijingshan Road, Shijingshan District, Beijing Co-patentee after: SHOUGANG ZHIXIN QIAN'AN ELECTROMAGNETIC MATERIALS Co.,Ltd. Patentee after: BEIJING SHOUGANG Co.,Ltd. Address before: 100041 No. 68, Shijingshan Road, Beijing, Shijingshan District Patentee before: BEIJING SHOUGANG Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230928 Address after: No. 025 Zhao'an Street, Qian'an Economic Development Zone, Tangshan City, Hebei Province, 064400 Patentee after: SHOUGANG ZHIXIN QIAN'AN ELECTROMAGNETIC MATERIALS Co.,Ltd. Address before: 100040 Shijingshan Road, Shijingshan District, Beijing Patentee before: BEIJING SHOUGANG Co.,Ltd. Patentee before: SHOUGANG ZHIXIN QIAN'AN ELECTROMAGNETIC MATERIALS Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 064400 No. 025 Zhao'an Street, Qian'an Economic Development Zone, Tangshan City, Hebei Province Patentee after: Shougang Zhixin Electromagnetic Materials (Qian'an) Co.,Ltd. Country or region after: China Address before: No. 025 Zhao'an Street, Qian'an Economic Development Zone, Tangshan City, Hebei Province, 064400 Patentee before: SHOUGANG ZHIXIN QIAN'AN ELECTROMAGNETIC MATERIALS Co.,Ltd. Country or region before: China |