Home>Products>Cold-rolled grain-orien ted silicon steel
 
 
 

 
  Introduction
 
Cold-Rolled Grain-oriented Silicon Steel is mainly used in production of power transformer and mutual inductor Because of its complicated production progress and high intensity of technology, Cold-Rolled Silicon Steel is regarded as the art craft in metallurgy industry. Only a few companies in the world have key Know-how and production technology, but Yingquan is one of them.

Cold-Rolled Grain-oriented Silicon Steel is one of items listed in National Development project. Currently in the market, it just has limited supplies. Thanks to our own efforts in innovation and R&D, we have successfully finished study of production technology of Cold-Rolled Grain-oriented Silicon Steel. Our capacity in sound scale has been established. It is playing an important role now in bringing more supplies into domestic market and facilitating growth of metallurgy technology and electricity industry.

Our Cold-Rolled Grain-oriented Silicon Steel Project has been listed into Guangdong Tech Innovation Program 2008.

 
  Grading of Grain-oriented Silicon Steel
Instance 1: Y30Q130 thickness 0.30mm, regular silicon steel, lron loss standard: P1.7/50 not more than 1.30W/kg,min magnetic induction Not less than 1.8
Instance 2: Y30QG120 thickness 0.30mm, high-magnetic induction silicon steel, lron loss stndard: P1.7/50 not more than 1.2W/kg,min magnetic induction not less than 1.85
 
  Technological characteristics and magnetic properties of Cold-rolled Medium-wide Grain-oriented Electrical Steel Strip(Sheet)
 
Grade Norminal thickness mm Theoretical density kg/dm2 Max lron loss(W/kg) Min magnetic induction (T) Min number of bends Min stacking factor %
P1.7/50 B800
Y23Q110
0.23 7.65 1.00 1.80 1 95
Y23Q120
1.20 1.78
Y23Q130
1.30 1.75
Y27QG110
0.27 7.65 1.10 1.85 1 95
Y27Q120
1.20 1.80
Y27Q130
1.30 1.80
Y27Q140
1.40 1.78
Y30QG110
0.30 7.65 1.10 1.85 1 95.5
Y30QG120 1.20 1.85
Y30Q120 1.20 1.85
Y30QG130 1.30 1.85
Y30Q130 1.30 1.80
Y30Q140 1.40 1.79
Y30Q150 1.50 1.78
Y30Q160 1.60 1.77
Y30Q170 1.70 1.76
Y30Q180 1.80 1.76
Y35Q135 0.35   1.35 1.80 1 96
Y35Q145 1.45 1.80
Y35Q155 1.55 1.78
 
  Measurement tolerance of Grain-oriented steel strip(sheet) (mm)
 
Nominal width Nominal thickness Thickness tolerance Tolerance of horizontal thickness Width tolerance Length tolerance of steel sheet
<150 0.23 ±0.02 ≤0.02 +0.2
0
+10
0
>150~400 0.27
0.30
0.35
±0.03 +0.3
0
>400~700 ≤0.03 +0.5
0
 
  Measurement spec of Grain-oriented Silicon Steel (mm)
 
Nominal thickness Nominal width Internal radius
0.23 0.27 0.30 0.35 300~700 500
Remark: width is integral times of 5mm
 
  Measurement tolerance of grain-oriented silicon steel (mm)
 
Nominal thickness Thickness tolerance Tolerance of vertical thickness Tolerance of horizontal thickness Width tolerance
Edge cut Edge not cut
0.23 ±0.02 ≤0.030 ≤0.030 0~+2 0~+5
0.27 ±0.03
0.30
0.35
Remark:
1. In-flatness not more than 1.5%.
2. Edge camber of steel strip not more than 1.0mm per 2000mm.
 
 
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