Tawm tsam keeb kwm yav dhau los ntawm kev siv zog thoob ntiaj teb los txhawb kev txuag hluav taws xob, txo qis qis, thiab cov pa roj carbon nruab nrab, cov khoom siv hluav taws xob faib hluav taws xob - raws li cov khoom siv tseem ceeb tshaj plaws hauv cov tshuab hluav taws xob - tau pom lawv lub zog ua haujlwm tau dhau los ua qhov tseem ceeb ntawm kev saib xyuas thoob ntiaj teb. Nyob rau hauv xyoo tas los no, kev lag luam loj thoob ntiaj teb tau ua tiav cov txheej txheem kev ua haujlwm tsawg kawg nkaus ntawm lub zog hluav taws xob rau kev faib hluav taws xob.

Tuam Tshoj tau hloov kho raws li lub teb chaws tus qauv GB 20052 Yam tsawg kawg nkaus tso cai qhov tseem ceeb ntawm lub zog efficiency thiab lub zog efficiency qib rau peb -theem faib transformers, imposing stricter yuav tsum ntawm ob qho tib si tsis-load poob thiab load poob. Kev kho dua tshiab ntawm transformer zog efficiency qib ncaj qha tsav kev txhim kho tas mus li hauv kev ua haujlwm ntawm cov ntaub ntawv tseem ceeb.

 

Nyob rau hauv cov ntsiab lus no, Baosteel tus kheej tau tsim cov hlau tsis tshua muaj hlau-tso grain-oriented silicon steel qib B18R065 thiab B20R070, nrog rau lawv cov khoom siv hluav taws xob zoo heev thiab cov yam ntxwv ua haujlwm ruaj khov, tau ua tiav hauv kev ntim khoom ntawm Tier 1 lub zog hluav taws xob faib hluav taws xob.

 

Raws li kev tso cai channel tus khub ntawm Baosteel, GNEE Steel tuaj yeem ruaj khov muab ob qho ntawm cov qib no ntawm cov nplej-taw qhia txog silicon steel, muab cov chaw tsim khoom hloov pauv cov khoom siv tau zoo thiab txhim khu kev qha.

 

Kab lus no qhia txog cov hauv paus ntsiab lus ntawm kev txhim kho, kev ua haujlwm tsis zoo, thiab cov txiaj ntsig ntawm kev siv cov khoom siv ob qho no, muab cov ntaub ntawv siv rau cov tuam txhab transformer hauv kev xaiv cov khoom siv thiab tsim.

 

 

1. Txheej txheem cej luam ntawm High-Efficiency Distribution Transformer Development

Nyob rau hauv xyoo tas los no, kom txo tau lub zog poob hauv kev sib kis thiab kev faib tawm thiab txiav CO₂ emissions, lub teb chaws loj thiab cheeb tsam tau ua tiav los yog hloov kho qhov yuav tsum tau ua kom muaj txiaj ntsig zoo ntawm cov khoom siv hluav taws xob:

• Nyiv tau ua raws li "Top Runner Program" txij li xyoo 2014, tsis tu ncua nce cov txiaj ntsig kev ua tau zoo rau transformers;
• Cov European Union tau tswj hwm txoj cai Ecodesign - Tier 2 rau kev hloov pauv hauv xyoo 2021, teeb tsa siab dua rau qhov tsis muaj kev thauj khoom thiab thauj khoom poob;
• Tebchaws Asmeskas tau siv DOE tus qauv tshiab rau kev faib khoom hloov pauv hauv xyoo 2024, ua tiav kev txhim kho kev ua haujlwm zoo;
• Tuam Tshoj tau rov kho dua GB 20052, ntxiv cov qib kev siv hluav taws xob, nce qhov tsawg kawg nkaus tso cai, thiab faib cov transformers rau hauv peb qib: Tier 1, Tier 2, thiab Tier 3.

 

Kev tsim hluav taws xob txuag hluav taws xob hloov pauv yuav tsum tsis yog tsuas yog cov tswv yim tsim qauv thiab cov cuab yeej tsim khoom tsim nyog, tab sis kuj tseem muaj cov ntaub ntawv zoo. Tam sim no, transformer cores feem ntau siv nyias-gauge grain-oriented silicon steel thiab hlau-raws li amorphous alloys. Txawm hais tias amorphous alloys pom tsis tshua muaj qhov tsis muaj kev poob qis, lawv muaj kev txwv ntawm qhov ua tau dav, toughness, noo noo tsis kam, thiab magnetostriction, uas cuam tshuam rau qhov zoo sib xws thiab kev siv dav dav.

 

Nyob rau hauv kev ua liaj ua teb-taw qhia txog silicon steel, cov neeg tsim khoom thoob ntiaj teb xws li Nippon Steel tau qhia qib 23ZDKH075 thiab 20ZDKH070, thaum JFE muaj 20JCSE070. Hauv tsev, Baosteel, tom qab ntau tshaj kaum xyoo ntawm kev ywj pheej R & D, tau ua tiav tag nrho cov txheej txheem thev naus laus zis rau cov nplej-oriented silicon steel thiab tsim cov khoom tiav tsev neeg npog thicknesses ntawm 0.18 hli mus rau 0.35 hli.

 

Ntawm cov no, cov qib qis-gauge hwm tau ua tiav cov khoom ntim ruaj khov thiab tau ua tiav hauv Tier 1 cov khoom siv hluav taws xob sib faib hluav taws xob. Li no, Baosteel tau dhau los ua ib qho ntawm cov neeg tsim khoom thoob ntiaj teb uas muaj peev xwm ntawm ib txhij muab 0.20 hli thiab 0.18 hli high-permeability grain-oriented silicon steel hauv ntim.

 

2. Cov Ntsiab Cai ntawm Kev Txhim Kho Khoom Siv

Cov thicknesses ntawm grain-oriented silicon steel yog 0.23 hli, 0.27 hli, thiab 0.30 hli, nrog ib tug silicon ntsiab lus ntawm txog 3.0%. Lub microstructure nthuav tawm qhov muaj zog Goss kev ntxhib los mos, nrog cov kev taw qhia yooj yim magnetisation ua ke mus rau lub dov kev taw qhia, uas ua rau muaj siab sib nqus induction raws li dov kev taw qhia. Thaum lub sij hawm magnetization, magnetic domains yog tsim, thiab cov txheej insulating nto ua hauj lwm ob qho tib si hluav taws xob rwb thaiv tsev thiab magnetic domain refinement.

 

 

Cov txheej txheem tseem ceeb ntawm kev txo cov hlau poob hauv cov nplej-oriented silicon steel suav nrog peb yam:Txhim kho lub lis piam orientation degree; cov khoom nto yog du yam tsis muaj txheej txheej; Lub thickness yog txo mus rau 0.15 ~ 0.20 hli, thiab cov ntsiab lus silicon yog nce mus rau 3.4% ~ 3.5%.

Core poob muaj hysteresis poob (\\(P_h\\)), eddy tam sim no poob (\\(P_e\\)) thiab anomalous poob (\\(P_a\\)): • Hysteresis poob: cuam tshuam los ntawm crystal qauv, impurities, kev nyuaj siab sab hauv, grain loj thiab lwm yam; • Eddy tam sim no poob: muaj zog correlated nrog daim ntawv thickness, nrog rau cov mis qhia raws li

Kev poob tsis zoo: qhov seem seem ntawm tag nrho cov tub ntxhais poob tom qab txiav tawm ob qho kev poob saum toj no.

Tag nrho eddy tam sim no poob xav txog anomalous poob:

Hysteresis Loss Formula:

Tag nrho cov Formula poob:

Thickness txo tuaj yeem txo qhov poob tam sim no thiab tag nrho cov tub ntxhais poob, qhov kev ua kom zoo dua qub yuav ua rau hysteresis poob.

Lub caij no, daim ntawv nyias nyias yuav ua rau tsis ruaj tsis khov theem nrab recrystallization, strip breakage thaum lub sij hawm tsim thiab lwm yam tsis xws luag, uas yuav tsum tau nruj me ntsis tswj cov tshuaj muaj pes tsawg leeg thiab tag nrho cov txheej txheem tsim.

 

3. Kev ua tau zoo ntawm cov khoom tshiab B18R065 thiab B20R070

Baoshan Hlau & Hlau tau tsim qis- tub ntxhais- poob qib B18R065 thiab B20R070 los ntawm kev siv cov thev naus laus zis nrog rau kev tswj cov tshuaj muaj pes tsawg leeg tshiab, induction cua sov, siab -nruj txheej thiab laser scribing:

 

Cov khoom siv hluav taws xob ntawm B20R070 yog qhov sib npaug ntawm cov khoom txawv teb chaws 0.2 hli 070-qib.

 

Kev sib piv cov cuab yeej cuab tam: Tsis muaj qhov sib txawv tseem ceeb ntawm B18R065, B20R070 thiab B23R075. Cov txheej txheem shearing yuav tsum nruj me ntsis tswj kom lav qhov ua tau zoo.

 

Table 1 Mechanical Property Indicators of Nyias-Gauge Grain-Oriented Electrical Steel

Qib	Tensile zog (Longitudinal) / MPa	Yield zog (Longitudinal) / MPa	Elongation (Longitudinal) /%	HV 1
B23R075	352	330	12	200
B20R070	348	327	11	192
B18R065	345	322	14	189

 

4. Daim Ntawv Thov Qhov Zoo ntawm B18R065 thiab B20R070 hauv High-Efficiency Transformers

 

GB 20052 yog ib qho tseem ceeb hauv lub teb chaws tus qauv uas yuav tsum tau txo qhov tseem ceeb ntawm tsis muaj -load poob thiab load poob, ua ultra-cov tub ntxhais uas tsis muaj zog- poob hluav taws xob steel qhov kev xaiv cov khoom zoo.

 

Kev siv lub zog tsim kho kom zoo ntawm 630 kVA zog-txuag kev faib khoom hloov pauv raws li qhov piv txwv: kev hloov kho cov nplej- cov qib hluav taws xob zoo tshaj plaws tso cai rau lub tshuab hloov hluav taws xob tsim kom muaj qhov sib nqus flux ntau dua, uas txo qhov cross- ntu ntu ntawm cov tub ntxhais hlau.

 

Qhov no ntxiv txo qhov hnyav ntawm windings, transformer tso tsheb hlau luam, insulating roj thiab lwm yam khoom, uas ua rau ib tug ntau compact tag nrho cov qauv thiab ib tug 3% ~ 4% kev txhim kho nyob rau hauv cov nqi kev ua tau zoo. Yog li ntawd, B18R065 thiab B20R070 yog cov khoom siv tseem ceeb rau siab - transformers efficiency.

 

5. Cov neeg siv daim ntawv thov kev ua tau zoo

 

Cov txiaj ntsig ntawm Chav Kawm 1 lub zog hluav taws xob faib hluav taws xob hloov pauv qauv S-M-315/10-NX1 tsim los ntawm kev koom tes nrog cov tuam txhab transformer:

• B18R065: Nws tsis muaj -load poob yog 13% qis dua tus nqi tus qauv, nrog rau lub suab nrov ntawm 42 dBA xwb. Tag nrho cov kev ntsuas ntsuas tshaj li cov txheej txheem teev tseg.
• B20R070: Nws qhov kev ua tau zoo ntawm electromagnetic yog sib npaug ntawm cov khoom siv 0.2 hli qib 070 hluav taws xob hlau.

Table 2 Test Parameters ntawm S-M-315/10-NX1 Chav Kawm 1 Zog Efficiency Distribution Transformer nrog cov khoom siv sib txawv

Core Material Qib	Tsis muaj -Load Poob / W		Load Loss / W		Tsis muaj -Load Current / %		Lub suab nrov / dBA
	Txuj	Ntsuas	Txuj	Ntsuas	Txuj	Ntsuas	Txuj	Ntsuas
B18R065	340	298301	3065	29462931	0.35	0.21	48	4142
B20R070	340	329332	3065	29452877	0.35	0.190.21	48	-
Imported 0.2 hli Qib 070	340	325327	3065	29632960	0.35	0.150.16	48	-

 

6. Cov lus xaus thiab Outlook

Kev txhim kho txuas ntxiv ntawm qhov yuav tsum tau ua kom muaj txiaj ntsig zoo ntawm cov khoom siv hluav taws xob hloov pauv thoob ntiaj teb tau dhau los ua tus tsav tsheb tseem ceeb rau kev txhim kho txuas ntxiv ntawm cov khoom siv tseem ceeb. Kev hloov kho ua tiav ntawm Tuam Tshoj tus GB 20052 qhia meej meej qhia kev tsim hluav taws xob rau kev poob qis thiab muaj kev ntseeg siab dua, tsim kom muaj kev siv dav dav rau nyias-gauge premium grain-oriented silicon steels.

 

Nrog nws cov txheej txheem tsim nws tus kheej tag nrho, Baosteel's B20R070 thiab B18R065 qib tau mus txog qib siab thoob ntiaj teb thiab tau ua tiav daim ntawv thov ntim hauv Tier 1 lub zog hluav taws xob hloov pauv hloov pauv. Hauv particular, transformers siv B18R065 tau pom tias tsis muaj load poob ntau tshaj 13% qis dua tus qauv txwv, ua rau muaj kev cuam tshuam loj heev rau cov khoom siv hauv tsev hauv qib high-qib zog-tsim transformer daim ntawv thov. Baosteel tau dhau los ua lub ntiaj teb thawj tus tsim khoom muaj peev xwm ntawm ib txhij muab 0.20 hli thiab 0.18 hli high-permeability grain-oriented silicon steel hauv ntim.

 

Saib tom ntej, Baosteel yuav txuas ntxiv nthuav cov peev txheej ntawm 0.20 hli thiab 0.18 hli nyias-gauge grain-oriented silicon steels, ntxiv txhim kho cov khoom sib xws thiab cov khoom zoo, thiab ua kom cov khoom lag luam txuas ntxiv nrog cov hlau qis dua thiab cov hlau nplaum ntau dua, muab cov khoom muaj zog txhawb rau kev hloov pauv hloov pauv mus tas li.

 

 

GNEE SteelRaws li ib tug tso cai distributor ntawm Baosteel grain-oriented silicon steel, tuav lub sij hawm ntev Tshuag ntawm tag nrho cov ntau yam ntawm nyias-gauge high-permeability qib, xws li B18R065 thiab B20R070. Peb muab cov slitting, shearing, thiab lwm yam kev pabcuam, txhawb nqa los ntawm kev txhawb nqa kev tshaj lij. Peb zoo siab txais tos txhua tus neeg tsim khoom transformer los nug lossis tuaj xyuas peb qhov chaw. Peb tau cog lus tias yuav muab cov khoom lag luam zoo thiab cov kev pabcuam txaus siab rau koj.

 

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