thin-gauge silicon steel strips and applied products silicon steel strips provide superior cost...
TRANSCRIPT
NIKKIN DENJI KOGYO Co., Ltd.NIKKIN DENJI KOGYO Co., Ltd.
Thin-gauge silicon steel strips and Applied products
0.1 mm
0.05 mm
渦電流
0.2 mm
0.1 mm
0.05 mm
渦電流
0.2 mm
Con
vent
iona
l si
licon
ste
el st
rips
Th
in-g
uage
silic
on s
teel
stri
ps
Very low core loss can be achieved by usingthin-gauge strips due to its small eddy currents.
0.1 mm
0.05 mm
渦電流
0.2 mm
0.1 mm
0.05 mm
渦電流
0.2 mm
Con
vent
iona
l si
licon
ste
el st
rips
Th
in-g
uage
silic
on s
teel
stri
ps
Very low core loss can be achieved by usingthin-gauge strips due to its small eddy currents.
High
極薄珪素鋼帯
高珪素鋼
Frequency
Low
Perf
orm
ance
Cost HighLow
High
Low
High silicon steel strips
Thin-guagesilicon steel strips
High
極薄珪素鋼帯
高珪素鋼
Frequency
Low
Perf
orm
ance
Cost HighLow
High
Low
High silicon steel strips
Thin-guagesilicon steel strips
◆ Thin-gauge silicon steel strips provide superior cost performance at high frequencies.
1
Thin-gauge silicon steel stripsThin-gauge silicon steel strips
Conventional silicon steels are widely used for electrical power apparatus, electrical components in industrial products and home electronics. However, most silicon steel strips are more than 0.2mm in thickness, and applied only to apparatus operated at industrial frequencies. On the other hand, thin-gauge silicon steel strips have advantage for use at higher frequencies. The thickness of our silicon steel strips have been reduced to the world’s thinnest level so that the core loss caused by eddy currents is compressed to the lowest level and combined with our insulation coating technology, the lamination factor has been improved. Our thin-gauge silicon steel strips assist saving energy and down-sizing high-frequency reactors, transformers, and motors. Our thin-gauge silicon steel strips allow superior cost saving as well as performance at high frequencies.
0.05mm0.08mm 0.1mm 0.025mm
BulkBulk
GT-080 Highsilicon steel
Ferrite(Mn-Zn)
50
100
0
Cor
e lo
ss (
W/k
g)
極薄珪素鋼帯
GTシリーズ
極薄珪素鋼帯
GTシリーズ
GT-050 Amorphous Sendust
Thin-guage silicon steel stripsGT Series
20kHz/0.1T
0.05mm0.08mm 0.1mm 0.025mm
BulkBulk
GT-080 Highsilicon steel
Ferrite(Mn-Zn)
50
100
0
Cor
e lo
ss (
W/k
g)
極薄珪素鋼帯
GTシリーズ
極薄珪素鋼帯
GTシリーズ
GT-050 Amorphous Sendust
Thin-guage silicon steel stripsGT Series
20kHz/0.1T
Inde
x of
cost
per
form
ance
(Cos
t×Lo
ss×
Volu
me)
Highsilicon steel
Amorphous Sendust Ferrite(Mn-Zn)GT-080GT-050Inde
x of
cost
per
form
ance
(Cos
t×Lo
ss×
Volu
me)
Highsilicon steel
Amorphous Sendust Ferrite(Mn-Zn)GT-080GT-050
2
◆ Thin-gauge silicon steel strips demonstrate their true abilities only after application.
◆ Thin-gauge silicon steel strips contribute to down sizing , saving energy and lower costs.
Examples of design of 4kVA reactor ( Ref. page 10 )
Cost performances of thin-guage silicon steel strips
Advantages of applicationsAdvantages of applications
Amorphousand ferriteexhibit excellentperformance ina evaluation ofthe core loss.
Amorphousand ferriteexhibit excellentperformance ina evaluation ofthe core loss.
Have materials been chosen for their characteristics ? Have materials been chosen for their characteristics ?
Evaluation ofperformance willchange accordingto the total lossincluding lossesfrom the sizeand copper wires.
Evaluation ofperformance willchange accordingto the total lossincluding lossesfrom the sizeand copper wires.
Additionally,considering costperformance,the advantagesof thin-gaugesilicon steel stripsis apparent.
Additionally,considering costperformance,the advantagesof thin-gaugesilicon steel stripsis apparent.
GT-050 GT-080
銅線
Images of required sizes to get the same output
Tota
l Los
s (W
)
Highsilicon steel
Amorphous Sendust Ferrite(Mn-Zn)
Copperwire
Coil
CoilCoil Coil
Core Core CoreCore Core
Copperwire Copper
wireCopperwire
Copperwire
Copperwire
GT-050 GT-080
銅線
GT-050 GT-080GT-050 GT-080
銅線
Images of required sizes to get the same output
Tota
l Los
s (W
)
Highsilicon steel
Amorphous Sendust Ferrite(Mn-Zn)
Copperwire
Coil
CoilCoil Coil
Core Core CoreCore Core
Copperwire Copper
wireCopperwire
Copperwire
Copperwire
High-frequency reactors
Motor cores
Applications of the GT series Thin-guage silicon steel strips Applications of the ST series
◆ Oriented thin-guage silicon steel strips GT series
◆ Non-oriented thin-guage silicon steel strip ST series
Table 1 Types of thin-gauge silicon steel stripsClassification Grade Thickness Characteristics
GT series GT-100 0.10mm※GT-080 0.08mm GT-050 0.05mm※GT-040 0.04mm
ST series ST-150 0.15mm
ST-100 0.10mm
ST-050 0.05mm Notes) Grade(※)shows newly developed products.
*Similar oriented magnetic properties relative to the rolling direction*Very low core loss at high frequencies and high saturation flux density*Most suitable for reactors, transformers, and shields
*The same as magnetic properties of GT series*No orientation in magnetic properties*Most suitable for motors, shields and also for high frequency reactors
Oriented thin-gauge silicon steel strips
Non-oriented thin-gauge silicon steel strips
Types and applications of thin-gauge silicon steel strips
Crystalline orientation
Mainly applied to wound cores (Wound for use)
3
The crystalline orientations which can be easily magnetized are oriented to the rolling direction.
The crystalline orientation is directed randomly in the plane.
Mainly applied to motor cores (Stamped out for use)
Types of thin-gauge silicon steel strips Types of thin-gauge silicon steel strips
Low core lossThey have low core lossat high frequencies andallow improvements inefficiency, and savesenergy of reactors andtransformers.
High saturation flux densityThey contribute to down-sizing of high frequencyreactors and transformersdue to high saturation fluxdensity.
High permeabilityHigh permeabilityallows use for shields. (Ref. figure on page 6)
Excellent insulation coatingThe inorganic coatingallows excellent insulation,which enables the beststress relief annealing(results).
Thin-guagesilicon steel
strips
Low core lossThey have low core lossat high frequencies andallow improvements inefficiency, and savesenergy of reactors andtransformers.
High saturation flux densityThey contribute to down-sizing of high frequencyreactors and transformersdue to high saturation fluxdensity.
High permeabilityHigh permeabilityallows use for shields. (Ref. figure on page 6)
Excellent insulation coatingThe inorganic coatingallows excellent insulation,which enables the beststress relief annealing(results).
Thin-guagesilicon steel
strips
<Reference > Required properties for magnetic materials<Reference > Required properties for magnetic materials
Core loss
Energy saving and high efficiency are achieved.
Eddy current loss渦電流
The joule heat caused by eddy currents increasesthe energy loss.
◆The lower the core loss, the smaller the energy loss.
H
B
渦電流Eddy current
Hysteresis loss
Core loss
Energy saving and high efficiency are achieved.
Eddy current loss渦電流渦電流渦電流
The joule heat caused by eddy currents increasesthe energy loss.
◆The lower the core loss, the smaller the energy loss.
H
B
渦電流渦電流Eddy current
Hysteresis loss
Characteristics of thin-guage silicon steel strips
■ High flux density、High permeability
■ Low core loss
4
CharacteristicsCharacteristics
The thickness significantly effects core loss, therefore, allowing thin with very low core loss at high frequencies to contribute to higher efficiency and saving energy.
Magnetic saturation flux density of oriented thin gauge silicon steel strips
フェライト
アモルファス
GT-040
GT-050
GT-080
GT-100
高珪素鋼( 0.1t)
センダスト
1
Mag
netic
flux
den
sity
(
T)
Core loss f = 20kHz
0.1
理想の方向
1 10 100 1000
0.1
0.01
0.001
W2/20k
W
W0.5/20k
W0.1/20k
フェライト
アモルファス
GT-040
GT-050
GT-080
GT-100
高珪素鋼( 0.1t)
センダスト
(W/kg)
0.1
Comparison of core loss of oriented thin-guagesilicon steel strips and other Magnetic materials
1 10 100 1000
フェライト
アモルファス
GT-040
GT-050
GT-080
GT-100
高珪素鋼( 0.1t)
センダスト
f = 20kHz
0.1 1 10 100 1000
Ferrite
Amorphous
GT-040GT-050
GT-080
GT-100High silicon steel strips(0.1t)
Sendust
0.1 1 10 100 1000
1/20k
The desireddirection
フェライト
アモルファス
GT-040
GT-050
GT-080
GT-100
高珪素鋼( 0.1t)
センダスト
1
Mag
netic
flux
den
sity
(
T)
Core loss f = 20kHz
0.1
理想の方向
1 10 100 1000
0.1
0.01
0.001
W2/20k
W
W0.5/20k
W0.1/20k
フェライト
アモルファス
GT-040
GT-050
GT-080
GT-100
高珪素鋼( 0.1t)
センダスト
(W/kg)
0.1
Comparison of core loss of oriented thin-guagesilicon steel strips and other Magnetic materials
1 10 100 1000
フェライト
アモルファス
GT-040
GT-050
GT-080
GT-100
高珪素鋼( 0.1t)
センダスト
f = 20kHz
0.1 1 10 100 1000
Ferrite
Amorphous
GT-040GT-050
GT-080
GT-100High silicon steel strips(0.1t)
Sendust
0.1 1 10 100 1000
1/20k
The desireddirection
0 0.050 0.100 0.150 0. 200
10
20
30
40
50
60
0. 250
STシリーズSTSTシリーズシリーズ
GTシリーズGTシリーズ
高珪素鋼板
高珪素鋼板
W1/20K
W 0.5/20K
Thickness (mm)Relation between core loss and thicknessin high-frequency ranges
Thin-guage silico n steel strips Coventional silicon steel strips
GTシリーズGTシリーズ
STシリーズSTSTシリーズシリーズ
0 0.050 0.100 0.150 0. 200
10
20
30
40
50
60
0. 250
ST series
GT series
High siliconsteel strips
W 1/20K
W0.5/20K
Cor
e lo
ss (W
/kg)
ST series
High siliconsteel stripsGT series
0 0.050 0.100 0.150 0. 200
10
20
30
40
50
60
0. 250
STシリーズSTSTシリーズシリーズ
GTシリーズGTシリーズ
高珪素鋼板
高珪素鋼板
W1/20K
W 0.5/20K
Thickness (mm)Relation between core loss and thicknessin high-frequency ranges
Thin-guage silico n steel strips Coventional silicon steel strips
GTシリーズGTシリーズ
STシリーズSTSTシリーズシリーズ
0 0.050 0.100 0.150 0. 200
10
20
30
40
50
60
0. 250
ST series
GT series
High siliconsteel strips
W 1/20K
W0.5/20K
Cor
e lo
ss (W
/kg)
ST series
High siliconsteel stripsGT series
Mag
netic
sat
urat
ion
flux
dens
ity(
T) 0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現2.0
2.5
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.100.10 mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
一般珪素鋼
0.350.23mm
を実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
1.5
f=20kHz B=0.05T
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
1.0
1 10 1000
0.5
0.100.10 mm0.05mm0.05mm
Ferrite
AmorphousDust core
Effect of thinner materialThin-gauge silicon steel
High silicon steel
Conventional silicon steel
0.350.23mm
Core loss (W/kg)
The down-sizing and energy savingsare possible.
Comparison of magnetic properties of oriented thin-guagesilicon steel strips and other magnetic materials
The desireddirection
Mag
netic
sat
urat
ion
flux
dens
ity(
T) 0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現2.0
2.5
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.100.10 mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
一般珪素鋼
0.350.23mm
を実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
1.5
f=20kHz B=0.05T
0.10mm0.10mm0.05mm0.05mm
フェライト
アモルファスダストコア
極薄化の効果極薄珪素鋼
高珪素鋼
理想の方向
一般珪素鋼
0.35mm0.35mm小型化、省エネを
実現
1.0
1 10 1000
0.5
0.100.10 mm0.05mm0.05mm
Ferrite
AmorphousDust core
Effect of thinner materialThin-gauge silicon steel
High silicon steel
Conventional silicon steel
0.350.23mm
Core loss (W/kg)
The down-sizing and energy savingsare possible.
Comparison of magnetic properties of oriented thin-guagesilicon steel strips and other magnetic materials
The desireddirection
Thin-gauge silicon steel strips have high saturation flux density which contributes to the downsizing.
Core loss of thin gauge silicon steel strips at high frequencies
5
Seeing the effect of the thickness
Properties of thin-gauge silicon steel stripsProperties of thin-gauge silicon steel strips
The most suitable thin-gauge silicon steel strips can be selected according to the required magnetic properties.
Mag
netic
flux
den
sity
B
25(
T)
f=10kHz B=0.1TCore loss (W/kg)
Comparison of core loss of non-oriented thin-gauge siliconsteel strips with other non-oriented silicon steel strips
ST-100
ST-050
高珪素鋼
0
理想の方向
60 80 100
1.5
理想の方向
20 40
1.6
1.7
ST-150
珪素鋼 0.50mm
珪素鋼 0.35mm
珪素鋼 0.20mm
極薄珪素鋼
ST-100
ST-050
高珪素鋼
理想の方向理想の方向
ST-150
珪素鋼 0.50mm
珪素鋼 0.35mm
珪素鋼 0.20mm
極薄珪素鋼
ST-100
ST-050
高珪素鋼
理想の方向理想の方向
ST-150
珪素鋼 0.50mm
珪素鋼 0.35mm
珪素鋼 0.20mm
極薄珪素鋼
ST-100
ST-050High silicon steel
1.4
1.3
ST-150
0.50 mm
0.35 mm0.20mm
Thin-gauge silicon steels
Silicon steel
The
desired
directionM
agne
tic fl
ux d
ensi
ty
B25
(T)
f=10kHz B=0.1TCore loss (W/kg) f=10kHz B=0.1TCore loss (W/kg)
Comparison of core loss of non-oriented thin-gauge siliconsteel strips with other non-oriented silicon steel strips
ST-100
ST-050
高珪素鋼
0
理想の方向
60 80 100
1.5
理想の方向
20 40
1.6
1.7
ST-150
珪素鋼 0.50mm
珪素鋼 0.35mm
珪素鋼 0.20mm
極薄珪素鋼
ST-100
ST-050
高珪素鋼
理想の方向理想の方向
ST-150
珪素鋼 0.50mm
珪素鋼 0.35mm
珪素鋼 0.20mm
極薄珪素鋼
ST-100
ST-050
高珪素鋼
理想の方向理想の方向
ST-150
珪素鋼 0.50mm
珪素鋼 0.35mm
珪素鋼 0.20mm
極薄珪素鋼
ST-100
ST-050High silicon steel
1.4
1.3
ST-150
0.50 mm
0.35 mm0.20mm
Thin-gauge silicon steels
Silicon steel
The
desired
direction
0 1 2 3 4 5 6 7
t=0.10mm
t=0.10mm
t=0.10mm
ST100
ST050
GT100
GT050
GT100
GT050 ST100ST050
ST100
GT100
Cor
e lo
ssM
axim
um
perm
eabi
lity
DC
m
agne
tost
rict
ion
cons
tant
Si content (%)Magnetic properties of silicon steels
0
t=0.10mm
t=0.10mm
t=0.10mm
ST100
ST050
GT100
GT050
GT100
GT050 ST100ST050
ST100
GT100
Thin -gauge silicon steel High silicon steel
0 1 2 3 4 5 6 7
t=0.10mm
t=0.10mm
t=0.10mm
ST100
ST050
GT100
GT050
GT100
GT050 ST100ST050
ST100
GT100
Max
imum
pe
rmea
bilit
yD
C
mag
neto
stri
ctio
n co
nsta
nt
Si content (%)
0
t=0.10mm
t=0.10mm
t=0.10mm
ST100
ST050
GT100
GT050
GT100
GT050 ST100ST050
ST100
GT100
Thin -
80 1 2 3 4 5 6 7
t=0.10mm
t=0.10mm
t=0.10mm
ST100
ST050
GT100
GT050
GT100
GT050 ST100ST050
ST100
GT100
Cor
e lo
ssM
axim
um
perm
eabi
lity
DC
m
agne
tost
rict
ion
cons
tant
Si content (%)Magnetic properties of silicon steels
0
t=0.10mm
t=0.10mm
t=0.10mm
ST100
ST050
GT100
GT050
GT100
GT050 ST100ST050
ST100
GT100
Thin -gauge silicon steel High silicon steel
0 1 2 3 4 5 6 7
t=0.10mm
t=0.10mm
t=0.10mm
ST100
ST050
GT100
GT050
GT100
GT050 ST100ST050
ST100
GT100
Max
imum
pe
rmea
bilit
yD
C
mag
neto
stri
ctio
n co
nsta
nt
Si content (%)
0
t=0.10mm
t=0.10mm
t=0.10mm
ST100
ST050
GT100
GT050
GT100
GT050 ST100ST050
ST100
GT100
Thin -
8
6
Magnetic flux density of non-oriened thin-guage silicon steel strips
Comparison of magnetic properties of silicon steel
Non-oriented thin-gauge silicon steel strips is the ideal material due to its low core loss and high saturation flux density.
Properties of Thin-gauge silicon steel stripsProperties of thin-gauge silicon steel stripsProperties of Thin-gauge silicon steel stripsProperties of thin-gauge silicon steel strips
We sell thin-gauge silicon steel strips as well as designing, manufacturing, and sales of wound cores and applied products in which thin-gauge silicon steel strips are used. Based on our wealth of technical experience, we can design and manufacture the products to meet your demands. We offer wound cores in small lots which exhibit excellent cost performances. Using our wound cores is less costly than stamped cores since die assembly is unnecessary. We assist customers in selecting suitable cores by using our wealth of technical experience.
The design of applied products
Examples of application
Wound cores
We manufacture various wound cores and reactors.
Applied products (Electronic parts)
7
The design and manufacturing of applied productsThe design and manufacturing of applied products
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.研磨、エッチング
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.カット面処理
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.研磨、エッチング
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10 .カット面処理
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3.
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.研磨、エッチング
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.カット面処理
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.研磨、エッチング
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12. Rust proofing
6.歪み取り焼鈍6. Annealing
9. 切断9. Cutting
7.樹脂真空含浸7. Vacuum impregnation
10.研磨、エッチング10. Cut surface polishing / processing
.鉄心特性試験11. Test of core properties
8. 加熱硬化8. Heat curing
1.圧延(日本金属)1. Rolling (Nippon Kinzoku)
2.2. Annealing & insulation coating
3 .3. Magnetic property test (Epstein test)
4.スリット加工4. Slitting
5. Core making
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.研磨、エッチング
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.カット面処理
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.研磨、エッチング
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10 .カット面処理
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3.
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.研磨、エッチング
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.カット面処理
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12.防錆処理
6.歪み取り焼鈍6.歪み取り焼鈍
9. 切断9. 切断
7.樹脂真空含浸7.樹脂真空含浸
10.研磨、エッチング10.研磨、エッチング
11.鉄心特性試験11.鉄心特性試験
8. 加熱硬化8. 加熱硬化
1.圧延(日本金属)1.圧延(日本金属)
2.焼鈍+絶縁皮膜コーティング2.焼鈍+絶縁皮膜コーティング
3 .3 .
4.スリット加工4.スリット加工
5. コア成形5.コア成形
12.防錆処理12. Rust proofing
6.歪み取り焼鈍6. Annealing
9. 切断9. Cutting
7.樹脂真空含浸7. Vacuum impregnation
10.研磨、エッチング10. Cut surface polishing / processing
.鉄心特性試験11. Test of core properties
8. 加熱硬化8. Heat curing
1.圧延(日本金属)1. Rolling (Nippon Kinzoku)
2.2. Annealing & insulation coating
3 .3. Magnetic property test (Epstein test)
4.スリット加工4. Slitting
5. Core making
Manufacturing process of applied products
From rolling to assembly, we manufacture thin-gauge silicon steel strips and applied products under strict quality control.
8
Production processProduction process
Table 2 Dimensional notations
Shape Notations SN SN a×b×c×d (×e×f-R) EN EN a×b×c×d (×e×f-R) TN TN a×d×Di (×Do) SC SC a×b×c×d (×e×f-R) EC EC a×b×c×d (×e×f-R) TC TC a×d×Di (×Do)
ECP a1 d1
ECP a2×b×c×d2(×e×f-R) a3 d3
SCP SCP a1×b×c×d1(×e×f-R) a2 d2
Wound cores are available to meet customers requirements. Please specify the following.
Standard cores : CS series, SC series, EC series
9
Standard coresStandard cores
Saturationproperty Core size
selection
Inductance
Rated current
Carrier frequency
Carrier current
Selection of thelarger core size
①
②
Rea
ctor
spe
cific
atio
n
Core lossproperty Core size
selection
Saturationproperty Core size
selection
Inductance
Rated current
Carrier frequency
Carrier current
Selection of thelarger core size
①
②
Rea
ctor
spe
cific
atio
n
Core lossproperty Core size
selection
Table 3 Comparison of designs of reactors between various magnetic materials Materials Parameters
GT-100
GT-080
GT-050
GT-040
High silicon steel 0.1t
Amor- phous
Sendust
Ferrite Mn-Zn
Inductance(µH) 1000 ← ← ← ← ← ← ← Rated current (A) 25 ← ← ← ← ← ← ← Frequency(kHz) 20 ← ← ← ← ← ← ← Carrier current(Ap-p) 5 ← ← ← ← ← ← ← Inductance(µH)at50A ≧600 ← ← ← ← ← ← ← E
lect
rica
l sp
ecifi
catio
n
Temperature rise(K) ≦70 ← ← ← ← ← ← ← B(T) 0.90 1.03 1.06 1.06 0.87 0.91 0.39 0.46 Core loss(W) 19.1 14.4 11.5 9.2 14.8 3.2 5.7 1.1 Mass(kg) 1.27 1.11 0.96 0.92 1.23 1.27 2.27 1.10 C
ore
Ratio of cost *1 1.00 0.92 0.97 0.97 1.03 1.16 1.19 1.20 DC resistance(mΩ) 20.1 18.9 20.3 20.7 20.1 19.4 31.5 38.4 Copper loss(W) 12.6 11.8 12.7 13.0 12.6 12.2 19.7 24.2 Mass(kg) 0.60 0.57 0.61 0.62 0.60 0.58 1.13 1.63 C
oil
Ratio of cost *1 1.00 0.95 1.02 1.03 1.00 0.97 1.88 2.72 Total mass(kg) 1.87 1.68 1.57 1.54 1.83 1.85 3.40 2.73 Ratio of Loss(%) *2 0.79 0.66 0.61 0.56 0.69 0.39 0.64 0.63 ①Ratio of volume *1 1.00 0.92 0.87 0.83 1.00 1.09 2.00 1.99 ②Ratio of loss *1 1.00 0.83 0.77 0.70 0.86 0.49 0.80 0.80 ③Ratio of cost *1 1.00 0.93 0.98 0.98 1.02 1.11 1.36 1.57 R
eact
or
④Index of cost performance *3 1.00 0.71 0.65 0.57 0.88 0.59 2.18 2.49
*1 Values are calculated on the condition that values of GT-100.are set at 1.00. *2 Ratio of loss is the ratio of total loss (core loss plus copper loss) to capacity (4kVA). *3 Index of cost performance is calculated as ①×②×③.(The smaller number, better cost performance)
Design examples
The following is the example of a reactor for 4kVA photovoltaics generation. We can design the optimal reactor, by the specifications of inductance, rated current, carrier frequency, carrier current, etc.
10
Design examplesDesign examples
Δ B
②鉄損(=マイナーループの面積)
Saturation propertyof Reactor
Δ B
② Core loss(=Area of minar loop)
B
①
Current
Indu
ctan
ce
Magneticflux density
Magnetic force
Δ B
②鉄損(=マイナーループの面積)
Saturation propertyof Reactor
Δ B
② Core loss(=Area of minar loop)
B
①
Current
Indu
ctan
ce
Current
Indu
ctan
ce
Magneticflux density
Magnetic force
Table 4 Dimension Thickness Width
Grade Dimension (mm)
Tolerance (mm)
Cross-directional thickness deviation
(mm) Dimension
(mm) Tolerance
(mm)
Coil inner diameter
(mm)
GT-100 0.10 +0.010 -0.015 0.010 MAX 300 ±0.4 250
GT-050 0.05 +0.008 -0.010 0.010 MAX 300 ±0.4 250
ST-150 0.15 ±0.020 0.020 MAX 300 ±0.4 250
ST-100 0.10 +0.010 -0.015 0.010 MAX 300 ±0.4 250
ST-050 0.05 +0.008 -0.010 0.010 MAX 300 ±0.4 250
Table 5 Standard values of thin-guage silicon steel strips Core loss(W/kg) Magnetic flux density(T) Grade W10/400 W15/400 W10/1000 B8 B50
GT-100 - ≦15 - ≧1.7 - GT-050 - - ≦24 ≧1.6 - ST-150 ≦14 - - - ≧1.6 ST-100 ≦13 - - - ≧1.6 ST-050 - - - - ≧1.5
Notes) 1. For GT series, the specimens are taken from the strips parallel to the rolling direction. The measurements are in accordance with JIS C 2550 after stress relief annealing.
2. For ST series, the specimens are taken from the strips in both directions of parallel and transverse to the rolling direction. The measurements are in accordance with JIS C 2550.
3. W10/400,W15/400 and W10/1000 show core losses at magnetic flux densities 1.0T(10kG),1.5T(15kG) and 1.0T(10kG), and frequencies 400Hz, 400Hz and 1000Hz, respectively.
4. B8 and B50 show magnetic flux densities at magnetic force 800A/m and 5000A/m.
11
SpecificationsSpecifications
Dimension of thin-guage silicon steel strips
Standard values of thin-guage silicon steel strips
Table 6 Core loss properties Core loss (W/kg) Grade W15/50 W15/100 W10/400 W10/1000 W5/2000 W2/5000 W1/10000 W0.5/20000
GT-100 1.2 3.0 6.1 21.3 18.0 15.2 10.4 13.0 GT-050 1.7 5.0 7.3 17.0 13.0 10.2 7.1 5.3 ST-150 2.3 - 11.6 39.4 30.0 21.5 17.2 14.2 ST-100 2.7 - 11.0 34.1 25.3 17.0 12.9 10.2 ST-050 6.1 - 25.4 65.8 40.8 21.4 11.6 6.7
Table 7 Permeability and magnetic flux density properties Alternating permeability×10-3(H/m) Magnetic flux density(T) Grade
μ10/400 μ10/1000 μ5/2000 μ1/10000 μ0.5/20000 B8 B25 B50 GT-100 20.4 16.2 9.6 2.8 1.2 1.82 - - GT-050 16.6 16.0 9.9 2.7 1.5 1.75 - - ST-150 9.61 8.17 5.57 1.70 1.15 - 1.56 1.66 ST-100 8.54 7.87 5.81 2.00 1.39 - 1.55 1.65 ST-050 3.13 3.11 2.65 1.00 0.93 - 1.47 1.58
Notes) 1. For GT series, the specimens are taken from the strips parallel to the rolling direction. The measurements are in accordance with JIS C 2550 after stress relief annealing.
2. For ST series, the specimens are taken from the strips in both directions of parallel and transverse to the rolling direction. The measurements are in accordance with JIS C 2550.
Table 8 Mechanical and electric properties
Grade Density (g/cm3)
Space factor (%)
Tensile strength (N/mm2)
Elongation (%)
Hardness (Hv)
Specific resistance (μΩcm)
GT-100 7.65 93 420 9 202 *2 48 GT-050 7.65 90 387 11 179 *3 48 ST-150 7.65 94 496 15 205 *1 52 ST-100 7.65 93 476 13 198 *2 52 ST-050 7.65 90 487 12 182 *3 52 Notes) 1.Tensile strength and elongation are measured parallel to the rolling direction.
2. Hardness are measured by *1: H; 0.5kg, *2: H; 0.3kg, *3: H; 0.1kg.
Table 9 Comparison of properties between various magnetic materials
Material Magnetic flux density B8(T)
DC max relative permeability µm
Core loss W1/20000 (W/kg)
Specific resistance (µΩm)
GT-100 1.82 24,000 35 0.48 GT-080 ※ 1.80 20,000 31 0.48
GT-050 1.75 14,000 21 0.48 GT-040 ※ 1.70 10,000 18 0.48
ST-150 1.44 10,000 55 0.52 ST-100 1.42 7,000 44 0.52 ST-050 1.26 2,500 26 0.52
High silicon steel(0.1t) 1.29 23,000 31 0.82 Amorphous 1.56 300,000 6 1.30
Nanocrystalline soft magnetic alloys 1.23 70,000 4 0.01
Dust core(Sendust) 0.65 150 62 >10000 Ferrite (Mn-Zn) 0.45 3,500 3 >100000 Notes) Grade(※)shows newly developed products.
Magnetic propertiesMagnetic propertiesMagnetic properties of thin-guage silicon steel strips
12
Fig.1A Core loss cuves of GT-100
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Core loss (W/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.1B Exciting power curves of GT-100
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Exciting effective VA (VA/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.1C Frequency permeability characteristics curves of GT-100
B=0.01T
B=0.04T
B=0.1T
B=0.2T
B=0.5T
B=1.0T
0.001
0.01
0.1
10 100 1000 10000 100000
Frequency (Hz)
AC p
erm
eabi
lity
(H/m
)
Oriented thin-guage silicon steel strips GT-100
13
Characteristic curves (GT series)Characteristic curves (GT series)
Fig.2A Core loss cuves of GT-050
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000Core loss (W/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.2B Exciting power curves of GT-050
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Exciting effective VA (VA/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.2C Frequency permeability characteristics curves of GT-050
B=0.01TB=0.04T
B=0.1T
B=0.2T
B=0.5T
B=1.0T
0.001
0.01
0.1
10 100 1000 10000 100000
Frequency (Hz)
AC p
erm
eabi
lity
(H/m
)
Oriented thin-guage silicon steel strips GT-050
14
Characteristic curves (GT series)Characteristic curves (GT series)
Fig. 3A Core loss curves of ST-150
50Hz
400H
z
1kHz
2kHz
5kHz
10kH
z
20kH
z
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Core loss (W/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.3B Exiting power curves of ST-150
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Exiting power(VA/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.3C Frequency permeability characteristics curves of ST-150
B=0.01TB=0.04T
B=0.1TB=0.2TB=0.5TB=1.0T
0.0001
0.001
0.01
0.1
10 100 1000 10000 100000
Frequency (Hz)
AC
per
mea
bilit
y (H
/m)
Non-oriented thin-guage silicon steel strips ST-150
15
Characteristic curves (ST series)Characteristic curves (ST series)
Fig. 4A Core loss curves of ST-100
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Core loss (W/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.4B Exiting power curves of ST-100
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Exiting power(VA/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.4C Frequency permeability characteristics curves of ST-100
B=0.01T
B=0.04T
B=0.1TB=0.2TB=0.5TB=1.0T
0.0001
0.001
0.01
0.1
10 100 1000 10000 100000
Frequency (Hz)
AC
per
mea
bilit
y (H
/m)
16
Characteristic curves (ST series)Characteristic curves (ST series)
Non-oriented thin-guage silicon steel strips ST-100
Fig.5B Exiting power curves of ST-050
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Exiting power(VA/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig. 5A Core loss curves of ST-050
50Hz
400Hz
1kHz
2kHz
5kHz
10kHz
20kHz
0.01
0.1
1
10
0.01 0.1 1 10 100 1000
Core loss (W/kg)
Mag
neti
c flu
x de
nsit
y (T
)
Fig.5C Frequency permeability characteristics curves of ST-050
B=0.01TB=0.04TB=0.1TB=0.2TB=0.5TB=1.0T
0.0001
0.001
0.01
0.1
10 100 1000 10000 100000
Frequency (Hz)
AC p
erm
eabi
lity
(H/m
)
17
Characteristic curves (ST series)Characteristic curves (ST series)
Non-oriented thin-guage silicon steel strips ST-050
The insulation coating has the following characteristics.
1. The inorganic insulation coating is stable both thermally and chemically. Stress relief annealing is carried out in non oxidizing atmosphere at a temperature from 730 to 770℃, but the insulation coating has thermal resistance up to about 800℃. The coating is not damaged by transformer oil, and has high corrosion resistance.
2. The insulation coating is firmly adhered to the strip, so that it will not peel off during shearing and blanking.
3. The thin insulation coating allows high lamination factor. 4. The coating has high interlaminar resistance.
Stress from cutting, punching, bending have adverse effects on magnetic properties. To relieve these stress, stress relief annealing should be performed if necessary. The cautionary statements about stress relief annealing are as follows.
1. The atmosphere of stress relief annealing
Compositions of atmosphere gas are needed to be highly pure Nitrogen or mixed gas of 5-10% Hydrogen and 90-95% Nitrogen with the dew point less than 0℃.
2. Avoiding Carbon contamination The thin-gauge silicon steel strips can be easily carburized by annealing, because they are low carbon steel. The spacer and the inner cover of batch-type furnace should be made from low carbon steel. Completely remove oil, paper and cloth.
3. Piling Stacked cores should be heated in the edge to edge direction for a more efficient heat transfer for uniform heating. The heat radiation and the heat transfer by convection of atmosphere should be considered. Unlevel surfaces of the bases reduce the performance of the cores because of the induced strains.
4. Annealing temperature and time Annealing temperature of 730~770℃, for 2~3 hours is recommended. Cooling at the rate of 50~100℃/hr, the temperature of the furnace below 350℃
when cores are removed will have the best results.
Our thin-guage silicon steel strips are compatible in the RoHS directive that the mercury and its compounds, the cadmium and its compounds, the lead and its compounds, hexavalent chromium compounds, PBB and PBDE are below the restricted value and do not intentionally add or use in the manufacturing process.
Stress relief annealing of wound cores
Substances of environmental concern
The insulation coating
18
MiscellaneousMiscellaneous
1308-1, Ohaza-Angyoryo-Negishi, Kawaguchi-shi, Saitama-ken, 333-0834 TEL : +81-48-283-1002, FAX : +81-48-283-1004 E-mail : [email protected] Notice (1) Excluding standard values, the technical data described in this catalogue does not guarantees values. (2) Products described in this catalogue may show properties different from described contents depending on the intended purposes and conditions of use. We will not be responsible for any damages. (3) Technical data in this catalogue is subject to change without previous announcements.
Please contact our sales department for the latest information.
July 2008
NIKKIN DENJI KOGYO CO.,LTD.