CN1600876A - Method for guaranteeing temperature of finishing to gage of non orientating silicon steel - Google Patents
Method for guaranteeing temperature of finishing to gage of non orientating silicon steel Download PDFInfo
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- CN1600876A CN1600876A CN 03151243 CN03151243A CN1600876A CN 1600876 A CN1600876 A CN 1600876A CN 03151243 CN03151243 CN 03151243 CN 03151243 A CN03151243 A CN 03151243A CN 1600876 A CN1600876 A CN 1600876A
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- silicon steel
- non orientating
- orientating silicon
- finishing
- finishing temperature
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Abstract
This invention relates to a prodn. art of hot-rolling non-orientation silicon steel, particularly relates a method for keeping the temp. of final rolling non-orientation silicon steel. This invention solves the problem of unable to keep the temp. of prior art final rolling non-orientation silicon steel, and so resulting in the magnet of the finish procedure is not proceeded before fine rolling the non-orientation silicon steel. This method can be used for hot-rolling process of non-orientation silicon steel mill.
Description
Technical field: the present invention relates to the hot rolling production technique of non orientating silicon steel, particularly a kind of non orientating silicon steel finishing temperature method for guaranteeing.
Background technology: the finishing temperature of non orientating silicon steel (FDT) is very big to the influence of magnetic.And hot rolled weak link normally.Prior art is to wear tape speed/methods such as increase intermediate blank thickness by the raising finish rolling of routine and roughing unit to guarantee the finishing temperature of head.Some unit, it is worn tape speed and is subjected to the objective condition restriction, is difficult to guarantee fully the finishing temperature (especially head) of non orientating silicon steel by above-mentioned ordinary method.This is the Heating temperature low (being 1120 degree) because of silicon steel, and with respect to this Heating temperature, final temperature requires high (860 degree), and the silicon steel thinner thickness, is 2.0mm ~ 2.6mm.If finishing train wear the limited in one's ability or rolling instability in speed-raising back of tape speed, (referring to reach 11m/s, in the time of can't reaching 12m/s), temperature-controlled process routinely is difficult to guarantee finishing temperature.We once attempted improving in the following manner FDT:1, heating improves plate, base head temperature, and process furnace middle part burner is regulated.But DeGrain.2, tape speed and top speed are worn in the roughing raising, improve the roughing head and wear tape speed and the highest roll speed.But, wear tape speed in finish rolling and do not reach under the situation of 12m/s, still can't obtain satisfied effect.3, reduce and to roll and the de-scaling passage of finish rolling, be to guarantee FDT, and we have only used the de-scaling number of times of 2 passages, 1 passage of finish rolling in roughing.But still can not satisfy FDT.
Summary of the invention: the technical issues that need to address of the present invention are: in the finishing temperature that guarantees non orientating silicon steel under the tape speed situation limited in one's ability of wearing of finishing train.
Technical scheme of the present invention is: the characteristics of utilizing special, the difficult formation iron scale of surface of silicon steel oxide form to be pressed into, the technology of not de-scaling of non orientating silicon steel finish rolling has been proposed, under the prerequisite that does not influence the finished surface quality, satisfied the assurance requirement of head finishing temperature.Need to satisfy: the silicone content of non orientating silicon steel is more than 0.6%, process furnace weak oxide atmosphere, and roughing first passage must normal de-scaling with final passage.
The invention has the beneficial effects as follows: implement finish rolling not behind the descaling process, finishing temperature is able to obvious improvement.Corresponding cold rolling magnetic disqualification rate is improved, and plate surface quality is good.According to test to non orientating silicon steel magnetic and FDT relation, mean F DT and magnetic strength relation, mean F DT and iron loss relation, when adopting descaling process, the FDT head can not reach target value, but the middle part can reach target value basically, therefore, the magnetic property at contrast head, middle part is from the relation of a side reflection FDT and magnetic.The average magnetic strength in middle part is 1.72, is 1.71 end to end; The average iron loss in middle part is 5.79, is 5.82～5.89 end to end, theoretically, and illustrates all that from each side such as the influence of FDT mean value, head, middle and end differences to arrive target value significant for assurance magnetic.
Embodiment: do not carry out de-scaling before the non orientating silicon steel finish rolling.The non orientating silicon steel silicone content is more than 0.6%, is to guarantee surface quality, when carrying out not descaling process, must guarantee process furnace weak oxide atmosphere, roughing first passage must normal de-scaling with final passage.The oxide on surface of silicon steel is the more uniform red iron sheet of one deck in this composition scope, and the rarely found phenomenon that is pressed into is considered the service performance of silicon steel product again.The special process of not de-scaling of finish rolling has been proposed.This technology can't realize that on other steel grade not de-scaling of finish rolling on other any steel grades can cause serious iron scale defective.
Claims (3)
1, a kind of non orientating silicon steel finishing temperature method for guaranteeing, non orientating silicon steel carry out the process furnace heating earlier, and roughing first passage and the final subnormal de-scaling in road is characterized in that: do not carry out de-scaling before the non orientating silicon steel finish rolling.
2, a kind of non orientating silicon steel finishing temperature method for guaranteeing according to claim 1, it is characterized in that: process furnace need keep weak oxide atmosphere.
3, a kind of non orientating silicon steel finishing temperature method for guaranteeing according to claim 1, it is characterized in that: the non orientating silicon steel silicone content is more than 0.6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03151243 CN1269977C (en) | 2003-09-26 | 2003-09-26 | Method for guaranteeing temperature of finishing to gage of non orientating silicon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03151243 CN1269977C (en) | 2003-09-26 | 2003-09-26 | Method for guaranteeing temperature of finishing to gage of non orientating silicon steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1600876A true CN1600876A (en) | 2005-03-30 |
| CN1269977C CN1269977C (en) | 2006-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03151243 Expired - Lifetime CN1269977C (en) | 2003-09-26 | 2003-09-26 | Method for guaranteeing temperature of finishing to gage of non orientating silicon steel |
Country Status (1)
| Country | Link |
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| CN (1) | CN1269977C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447262C (en) * | 2005-10-31 | 2008-12-31 | 宝山钢铁股份有限公司 | Method for manufacturing ordinary oriented silicon steel |
| CN109365530A (en) * | 2018-10-09 | 2019-02-22 | 鞍钢股份有限公司 | A kind of high-level non-orientation silicon steel hot continuous rolling process |
| JP2020040082A (en) * | 2018-09-10 | 2020-03-19 | 日本製鉄株式会社 | Rolling lubrication facility and rolling method |
| CN110976513A (en) * | 2019-10-30 | 2020-04-10 | 张家港宏昌钢板有限公司 | Hot rolling production method for improving hot rolling temperature hit rate of silicon steel |
-
2003
- 2003-09-26 CN CN 03151243 patent/CN1269977C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447262C (en) * | 2005-10-31 | 2008-12-31 | 宝山钢铁股份有限公司 | Method for manufacturing ordinary oriented silicon steel |
| JP2020040082A (en) * | 2018-09-10 | 2020-03-19 | 日本製鉄株式会社 | Rolling lubrication facility and rolling method |
| JP7107113B2 (en) | 2018-09-10 | 2022-07-27 | 日本製鉄株式会社 | rolling method |
| CN109365530A (en) * | 2018-10-09 | 2019-02-22 | 鞍钢股份有限公司 | A kind of high-level non-orientation silicon steel hot continuous rolling process |
| CN109365530B (en) * | 2018-10-09 | 2020-09-01 | 鞍钢股份有限公司 | Hot continuous rolling production method of high-grade non-oriented silicon steel |
| CN110976513A (en) * | 2019-10-30 | 2020-04-10 | 张家港宏昌钢板有限公司 | Hot rolling production method for improving hot rolling temperature hit rate of silicon steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1269977C (en) | 2006-08-16 |
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Granted publication date: 20060816 |