CN105779877B - A kind of high-efficiency method for producing of half-technique non oriented electrical steel - Google Patents
A kind of high-efficiency method for producing of half-technique non oriented electrical steel Download PDFInfo
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- CN105779877B CN105779877B CN201410808560.XA CN201410808560A CN105779877B CN 105779877 B CN105779877 B CN 105779877B CN 201410808560 A CN201410808560 A CN 201410808560A CN 105779877 B CN105779877 B CN 105779877B
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Abstract
The present invention discloses a kind of high-efficiency method for producing of half-technique non oriented electrical steel, including desulfurizing iron-converter smelting-RH refining-continuous casting and hot rolling-pickling-it is cold rolling-continuous annealing-accumulation is smooth-coating-service check-packaging, molten steel is cast by base using continuous casting mode, 1.0~3.0mm is hot-rolled down to；0.3~0.7mm is cold-rolled to after pickling；Cold rolling rear continuous annealing, using N2+H2Protection, N2：10~100%；Remaining is H2；500~900 DEG C of soaking zone temperature, is incubated 30~100s；The smooth entrance in existing smooth process of accumulation, outlet set up uncoiler and coiling machine, selection same size, composition the products of volume two it is smooth with the deflection accumulation of critical strain 1~10%, tension force is in 1~10KN.
Description
Technical field
The present invention relates to the production method of electrical steel product, the efficient life of more particularly to a kind of half-technique non oriented electrical steel
Production method.
Background technology
Due to motor high efficiency, low-loss requirement, cold rolling non-oriented electrical steel does not require nothing more than low iron loss, and should have
High magnetic strength, while also to there is higher stampability.The cold rolling non-oriented electrical steel produced using common process is by optimizing composition
After technique, the electromagnetic performance of product is difficult to get a promotion again.
Roll-bonding is generally only applied on thin plate hot rolling technology (0.5~1.0mm), such as hot rolled silicon steel.In life
Shortcoming is many when producing hot rolled silicon steel sheet：Bonding laminates easily are produced during high temperature ply rolling, rejection number is big；Mill speed is low, hot-rolling stock
Thin, cooling velocity is fast, and temperature is difficult to grasp；Lubricated during rolling with pitch, oil smoke is big, pollution environment etc..
The conventional handicraft product of cold rolling non-oriented electrical steel half also uses batch annealing, whole steel in this technique
Volume is on end heated at high temperature, it may appear that bond and shirt rim, in order to prevent this phenomenon, steel plate need it is smooth and
Upper and lower surface need to all carry out frosting treatment, and although this technique improve the electromagnetic performance of product, but product template is bad,
And upper and lower surface has higher roughness, product lamination quality is influenceed.
The content of the invention
Present invention aims at the above mentioned problem that prior art is present is solved, the present invention provides a kind of half-technique non oriented electricity
The high-efficiency method for producing of work steel, is mainly concerned with smooth process Roll-bonding.
The technical scheme is that be achieved in that：
A kind of high-efficiency method for producing of half-technique non oriented electrical steel, it is characterised in that including desulfurizing iron-converter smelting
Refining-RH refining-continuous casting and hot rolling-pickling-is cold rolling-and continuous annealing-accumulation is smooth-coating-service check-bag
Dress, casts base by molten steel using continuous casting mode, is hot-rolled down to 1.0~3.0mm；0.3~0.7mm is cold-rolled to after pickling；Connect after cold rolling
Continuous furnace annealing, using N2+H2Protection, N2：10~100%；Remaining is H2；500~900 DEG C of soaking zone temperature, insulation 30~
100s；Uncoiler and coiling machine, selection same size, composition are set up in the smooth entrance in existing smooth process of accumulation, outlet
The products of volume two it is smooth with the accumulation of the deflection of critical strain 1~10%, tension force is in 1~10KN；
The same size finger widths are identical with thickness；
The identical component refers to the composition of same refining furnace steel；
Material composition：C≤0.003%, Si：0.5~3.0%, Al：0~2.0%, Mn：0.10~0.30%, P≤
0.03%, S≤0.015%, N≤0.0050%, remaining is Fe and inevitable residual elements.
The cold rolling non-oriented electrical steel produced using the method belongs to half handicraft product, (is bent with good processing characteristics
Strong ratio reaches more than 0.67).The technique of multireel product accumulation ply rolling makes that steel plate upper and lower surface stress is asymmetric, and this can not only weaken
Conventional rolling texture, increases favourable texture component, so as to lift product electromagnetic performance (P15/50Reduce 0.36W/kg, B5000
Improve 0.014T)；
Embodiment
Below by some embodiments, the present invention is further described.
Material composition：C：0.003%, Si：0.9%, Al：0.25%, Mn：0.22%, P：0.01%, S：0.006%, N：
0.002%, remaining is Fe and inevitable residual elements.
Embodiment 1
1. molten steel is cast into base using continuous casting mode, 2.1mm is hot-rolled down to；
2. 0.54mm is cold-rolled to after pickling；
3. continuous annealing is used after cold rolling, using N2+H2Atmosphere protection, N2：60%；Remaining is H2；Annealing furnace soaking zone
760 DEG C of temperature, is incubated 70s；
4. accumulation is smooth, 1 is set up again on the basis of the entrance, each 1 uncoiler in outlet and coiling machine in the whole process in Yuanping City
Platform uncoiler and 1 coiling machine, selection same size, the products of volume two of composition are with less deflection (critical strain 4.6%)
The progress that is superimposed is smooth, and tension force is in 3KN, and the final thickness of product is 0.515mm, it is smooth after each batch；
5. finished product is made in coating；
6. batch annealing, analog subscriber stress relief annealing, 750 DEG C of temperature, are incubated 2h.
Embodiment 2
1. molten steel is cast into base using continuous casting mode, 2.2mm is hot-rolled down to；
2. 0.55mm is cold-rolled to after pickling；
3. continuous annealing is used after cold rolling, using N2+H2Atmosphere protection, N2：70%；H2：30%；Annealing furnace soaking zone
780 DEG C of temperature, is incubated 60s；
4. accumulation is smooth, the entrance, outlet in the whole process in Yuanping City set up 2 uncoilers and 2 coiling machines again, select identical
The products of volume three of specification, composition, are then superimposed with less deflection (critical strain 9%) and carry out smooth, tension force again
Control is in 2.5KN, and the final thickness of product is 0.5mm；
5. finished product is made in coating；
6. batch annealing, analog subscriber stress relief annealing, 750 DEG C of temperature, are incubated 2h.
Embodiment 3
1. molten steel is cast into base using continuous casting mode, 2.3mm is hot-rolled down to；
2. 0.53mm is cold-rolled to after pickling；
3. continuous annealing is used after cold rolling, using N2+H2Atmosphere protection, N2：75%；Remaining is H2；Annealing furnace soaking zone
800 DEG C of temperature, is incubated 50s；
4. accumulation is smooth, the entrance, outlet in the whole process in Yuanping City set up 3 uncoilers and 3 coiling machines again, select identical
The products of volume four of specification, composition, are then superimposed with less deflection (critical strain 3%) and carry out smooth, tension force again
Control is in 4KN, and the final thickness of product is 0.507mm；
5. finished product is made in coating；
6. batch annealing, analog subscriber stress relief annealing, 750 DEG C of temperature, are incubated 2h.
Properties of product are obtained according to above-mentioned technique as follows：
Claims (1)
1. a kind of high-efficiency method for producing of half-technique non oriented electrical steel, it is characterised in that including desulfurizing iron-converter smelting-
RH refining-continuous casting and hot rolling-pickling-is cold rolling-and continuous annealing-accumulation is smooth-coating-service check-packaging, adopt
Molten steel is cast into base with continuous casting mode, 1.0~3.0mm is hot-rolled down to；0.3~0.7mm is cold-rolled to after pickling；Cold rolling rear continuous oven is moved back
Fire, using N2+H2Protection, N2：10~100%；Remaining is H2；500~900 DEG C of soaking zone temperature, is incubated 30~100s；Accumulation
Uncoiler and coiling machine, selection same size, the products of volume two of composition are set up in smooth entrance in existing smooth process, outlet
Smooth with the deflection accumulation of critical strain 1~10%, tension force is in 1~10KN；The composition of the steel is by weight percentage
For C≤0.003%, Si：0.5~3.0%, Al：0.25~2.0%, Mn：0.10~0.30%, P≤0.03%, S≤
0.015%, N≤0.0050%, remaining is Fe and inevitable residual elements.
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| CN201410808560.XA CN105779877B (en) | 2014-12-23 | 2014-12-23 | A kind of high-efficiency method for producing of half-technique non oriented electrical steel |
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| CN105779877A CN105779877A (en) | 2016-07-20 |
| CN105779877B true CN105779877B (en) | 2017-10-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119496A (en) * | 2016-08-08 | 2016-11-16 | 浙江华赢特钢科技有限公司 | A kind of production technology of modified model non-oriented silicon steel with high magnetic induction sheet |
| CN109097535B (en) * | 2018-09-27 | 2021-11-05 | 长春工业大学 | Method for preparing high-strength non-oriented silicon steel based on accumulative roll welding |
| CN111270123A (en) * | 2020-02-17 | 2020-06-12 | 本钢板材股份有限公司 | Method for optimizing electromagnetic performance of non-oriented silicon steel and non-oriented silicon steel |
| CN112877527B (en) * | 2021-01-11 | 2023-01-31 | 长春工业大学 | Method for preparing high-strength non-oriented electrical steel based on critical deformation |
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| US4545827A (en) * | 1981-07-02 | 1985-10-08 | Inland Steel Company | Low silicon steel electrical lamination strip |
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| CN102453837A (en) * | 2010-10-25 | 2012-05-16 | 宝山钢铁股份有限公司 | Method for preparing non-oriented silicon steel with high magnetic induction |
| CN103031421A (en) * | 2011-09-29 | 2013-04-10 | 鞍钢股份有限公司 | Production method of non-oriented electrical steel coating semi-processed product |
| CN103066768A (en) * | 2013-01-04 | 2013-04-24 | 湖南雪豹电器有限公司 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
| CN103695756A (en) * | 2013-12-12 | 2014-04-02 | 武汉钢铁(集团)公司 | Semi-process non-oriented silicon steel produced by adopting thin slab continuous casting and continuous rolling and production method of silicon steel |
| CN103882211A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Annealing method of cold-rolled non-oriented electrical steel thin strip |
| CN104195426A (en) * | 2014-03-26 | 2014-12-10 | 浙江龙盛薄板有限公司 | Semi-processed non-oriented silicon steel and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57121804A (en) * | 1981-01-20 | 1982-07-29 | Sumitomo Metal Ind Ltd | Pack rolling method |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545827A (en) * | 1981-07-02 | 1985-10-08 | Inland Steel Company | Low silicon steel electrical lamination strip |
| CN1827820A (en) * | 2005-02-23 | 2006-09-06 | 新日本制铁株式会社 | Non-oriented electrical steel sheet excellent in magnetic properties in rolling direction and method of production of same |
| CN102453837A (en) * | 2010-10-25 | 2012-05-16 | 宝山钢铁股份有限公司 | Method for preparing non-oriented silicon steel with high magnetic induction |
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| CN103031421A (en) * | 2011-09-29 | 2013-04-10 | 鞍钢股份有限公司 | Production method of non-oriented electrical steel coating semi-processed product |
| CN103882211A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Annealing method of cold-rolled non-oriented electrical steel thin strip |
| CN103066768A (en) * | 2013-01-04 | 2013-04-24 | 湖南雪豹电器有限公司 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
| CN103695756A (en) * | 2013-12-12 | 2014-04-02 | 武汉钢铁(集团)公司 | Semi-process non-oriented silicon steel produced by adopting thin slab continuous casting and continuous rolling and production method of silicon steel |
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