Products
Electric Steel
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variety |
Steel grade
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standard/specification
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Purposes & LYS product characteristics
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Cold-rolled electric steel
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LWB1300
LWB1000
LWB800
LWB600
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Technology specification
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It is delivered as cold-rolled coil, and also is used as substrate in heat treatment line of full-processed electric steel. After further treatment in full-processed electrical steel heat treatment line (decarburizing, annealing and coating) by the customer, its electromagnet is almost the same quality with the physical object of full-processed electric steel of the same grade.
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Semi-processed electric steel
（CRML-6、CRML-49、S85）
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Technology specification
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It is delivered as cold-rolled and coil, and is used to make electromagnetic elements of compressor, small motor, etc.. Customers should first punching the sheet, then decarburizing and annealing, bluing, and eventually use it with lamination. It has low iron loss, good electromagnetic, low cost and was energy-efficient and environment-friend. After annealing by the customer, its typical electromagnetic value is iron loss 3.5-5.0W/kg, magnetic induction ≥1.72T.
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Main performance index
1、 Semi-processed electric steel（CRML-64、CRML-49、S85）
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Index
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Hardness
(HV)
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Iron loss
(W/kg)
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Magnetic conductibility
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Thickness deviation
(mm)
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Roughness of surface
(μm)
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Control value
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100-180
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≤5.8
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≥2000
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±0.020
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0.8~2.0
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2、cold-rolled electric steel（LWB600、LWB800、LWB1000、LWB1300）
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Index
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Chemical composition
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Thickness deviation(mm)
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GAMA(mm)
|
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Control value
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Requirement can be satisfied
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+0.010，-0.015
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≤0.018
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3、 Hot-rolled substrate of electric steel（LGW800、LGW600）
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Index
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Chemical composition
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Physical performance
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Thickness deviation
|
|
Control value
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Requirement can be satisfied
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For reference only (not for delivery)
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±0.10(except for 15 meters of both head and tail)
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Technical assurance of the key process
1.Use HMPT—BOF process to produce low-S hot metal;
2. Oxygen and temperature control of the hot metal from BOF;
3. Deoxygenating and aluminum alloying (high acid-soluble aluminum) control in RH;
4. [O],[N] and inclusion control in hot metal;
5.CSP continuous casting parameters (shrouded casting, casting speed and cooling system) define;
6. Hot rolling schedule and temperature control during rolling;
7. Roller gap and gauge reduction control during hot rolling;
8. Surface quality control, especially the control of scale and other defects;
9. Reduction distribution control in cold rolling;
10. Adopt roll shift, roll bending and convex roll;
11. Leveling Elongation control;
12.Level with dull roll.
