Itekhnoloji ye-Solid state high frequency welder kunye nomgaqo wokusebenza

I.I.IIYUHUMU ZOKUVAVAVA KWAQALA IZIXHOBO ZESIXHOBO ESINGAZIQHELEKILEYO INTSHAYELELO

Kwiminyaka engama-20 eyadlulayo, imithombo yamandla aqheleke kakhulu (eyaziwa ngokuba yi "furnaces ye-high-frequency") esetyenziselwa ukuwelda imibhobho kunye nonyango lobushushu e-China yayizizixhobo eziphambili ezineityhubhu ze-elektroniki (ekwabizwa ngokuba yi "vacuum tubes") njengezona zinto ziphambili zokuguqula izinto. Umgaqo osisiseko uboniswa kulo mfanekiso ulandelayo:

I-AC yoshishino eqhelekileyo (inqanaba lesithathu iingcingo ezine 380V/50HZ e-China) iguqulwa ibe yi-AC ehlengahlengiswayo ukusuka kwi-Oto 380V (i-frequency engatshintshwanga) ngokusebenzisa i-thyristor AC voltage regulator, kwaye emva koko inyuswe ukuya phantse kwi-1 OOOOV ombane ophezulu (i-frequency ingatshintshwanga) i-transformer, kwaye emva koko yalungiswa yisekethe yokuhlaziya amandla ombane aphezulu ukuya kumashumi amawaka ombane aphezulu e-DC, yaze yaxutywa ngetyhubhu yokufunxa ukuya kwi-HF kunye ne-HV yangoku, emva koko nge-LC parallel resonance ukukhulisa i-oscillating current. ukufudumeza imibhobho yentsimbi kunye nezinye izinto zokusebenza njl.

Injongo yolawulo lwamandla ombane e-AC kukulungelelanisa igalelo kunye namandla aphumayo ukuhlangabezana neemfuno zokusebenza, kwaye xa uhlengahlengiso lwamandla ombane lukwafuna ukwenza umbane uzinzile ukuqinisekisa uzinzo lwemveliso yesixhobo phantsi kweemeko ezithile zokusebenza.

Ngenxa yokusetyenziswa kwetyhubhu yevacuum (i-voltage ephezulu yamacandelo amancinci angoku), i-voltage kufuneka inyuswe okanye ayinakukhupha amandla amakhulu kodwa kwangaxeshanye ukuze ulungelelanise ne-impedance encinci ye-inductor, kuyimfuneko ukunciphisa ngakumbi amandla ombane.

Iifoto ezingezantsi ziyi-600KW enye-loop vacuum ityhubhu ephezulu frequency kunye 100KW triple sesekethe vacuum ityhubhu HF izixhobo zokucima.

Kwimibhobho ye-welding industry.kusekho inani elincinci leetyhubhu ze-vacuum eziphakamileyo, ngelixa kwiindawo ezifana nokucima kunye ne-brazing.high frequency vacuum tubes zisasetyenziswa ngokubanzi.

Njengoko le mibhobho yokucoca iyeyeemveliso ezisusiweyo, asizukwazisa ngokweenkcukacha apha.

II.UMGAQO WOKUSEBENZA OKUQINISEKILEYO OKUPHAKAMILEYO

Oku kubizwa ngokuba yi "solid state high frequency" kungenxa yokuba isebenzisa iitransistors (MOS field effect transistors okanye IGBT) njengezona nxalenye zingundoqo zokuguqula izinto.Ngokungafaniyo netyhubhu yokufunxa ihollow(umphandle ugcwele igesi ebekekileyo, ngoko ke inokubizwa ngokuba "yigesi"). ,i-transistors ziqinile.

I-Solid state high frequency yimveliso ehlaziyiweyo ye-vacuum tube frequency ephezulu, kwaye isekethe yayo ephambili iyafana ne-thyristor medium frequency, kodwa yahlukile kwi-vacuum tube frequency ephezulu. Umgaqo wayo osisiseko uthi:

Inqanaba lesithathu le-AC (i-380V kunye ne-50HZ rhoqo e-China) iguqulwa ibe yi-voltage eguquguqukayo etyhutyhayo i-DC ngokusebenzisa isiphaluka sokulungisa (i-SCR okanye i-diode kunye ne-IGBT), le DC iyahluzwa okanye i-flat wave ibe yi-DC egudileyo, kwaye emva koko iye kwi-inverter bridge ( usebenzisa i-transistor yamandla amakhulu i-MOSFET okanye i-IGBT) ukuba ibe yi-frequency ephezulu yangoku. Lo mbane ophezulu wangoku unikezelwa kwi-tank yesiphaluka umthwalo resonance ingasetyenziselwa ukufudumeza kwesinyithi.Iinverter iiyunithi zamandla ebhulorho ithatha imodyuli yemodyuli.iimodyuli zamandla ezibini ziyafana.kodwa inani leemodyuli zamandla ezisetyenziswayo ziyahluka ngokuxhomekeke kumandla wesixhobo.W isixhobo sikhulu okanye sincinci, ulwakhiwo luyafana.Isekethe yetanki ye-resonant ikwi-series okanye i-parallel form.akukho umbane ophezulu kwaye akukho siguquli sokuphuma kwinqanaba-phantsi.

Xa kuthelekiswa neetyhubhu zokufunxa ezisebenza ngamaza amaninzi, izibonelelo zezixhobo ezisebenza ngamaza amaninzi ngolu hlobo lulandelayo:

1. Umgangatho olungileyo we-welding: uthelekiso lubonisa ukuba imibhobho yentsimbi edityaniswe sisixhobo sobume obuqinileyo sinobubanzi obudityanisiweyo obufanayo kunye nobushushu, kunye neebhubhu ezimbalwa zangaphakathi nangaphandle.

2. Ukonga amandla: iimvavanyo zibonisa ukuba iinkcukacha ezifanayo le welder inokugcina ngaphezu kwe-25% yombane xa kuthelekiswa nezixhobo zetyhubhu yokucoca.

3. Ukonga amanzi: ngenxa yokulahleka okuncinci, akufuni manzi okupholisa kakhulu. Ngoko ke kusebenzisa amanzi angaphantsi kwama-50% ngaphantsi kwesixhobo setyhubhu yokufunxa eneenkcukacha ezifanayo.

4. Ubungakanani obuncinci kunye nobunzima obulula: ngenxa yobukhulu obuncinci bamacandelo aphambili (MOSFET) kwaye akukho zixhobo ze-welding transformer.filament regulators.matching coils.gate circuits.etc. Ngoko ivolumu iyonke ingaphezulu kwe-50 °/4. encinci kunesixhobo setyhubhu ye-vacuum yeenkcukacha ezifanayo

5. Ukusebenza ngokulula: akukho mbane, amandla ombane aphezulu akadluli kumakhulu ambalwa eevolthi, ngoko ayisayi kubangela ukwenzakala.