Imhando ipi yepakati frequency magetsi magetsi anogona kusangana nezvinodiwa zve induction melting vira?

1 The output power requirements of the kudonhedzwa kunyorera vira for the thyristor intermediate frequency power supply.

Iyo simba rinobuda reiyo thyristor yepakati frequency simba rekupa rinofanirwa kusangana neiyo yakanyanya simba reiyo induction inonyungudika choto, uye simba rekubuda rinogona kugadziridzwa nyore. Izvi zvinodaro nekuti hupenyu hweiyo crucible ye induction yakanyunguduka choto kazhinji inenge makumi emavira uye yakakuvadzwa. Iyo crucible furnace lining inofanira kuvakwazve, uye mushure meiyo itsva crucible choto bhatani yavakwa, yakaderera-simba ovheni inofanira kuitwa pairi. 10% panguva dzenguva dzose kusvika yakayerwa simba remagetsi. Uyezve, mumutambo wechoto, kana mutero unonyunguduka, kuumbwa kwemutero kunofanira kuongororwa. Panguva yekuyedzwa, kuitira kudzivirira kunyungudika nekuvira zvine chisimba, iyo yepakati frequency magetsi magetsi anofanirwa kudzikisa simba rekubuda kuitira kuchengetedza chaji ichidziya. Tichifunga nezve mamiriro ari pamusoro, zvinodikanwa kuti iyo thyristor yepakati frequency magetsi magetsi anogona kugadziridzwa zviri nyore kubva ku20% -10% yeyakayerwa kubuda simba. The diathermic furnace inoshandiswa kuforoma haina kubikira.

2 Izvo zvinobuda frequency zvinodiwa zveiyo induction inonyungudika choto che thyristor yepakati frequency magetsi ekupa.

Hukama huri pakati pesimba remagetsi uye kuwanda kwechoto chekunyungudutsa induction kune hukama. Kutanga kubva pakushanda kwemagetsi, iyo inobuda frequency ye thyristor yepakati frequency simba rekupa inogona kutsanangurwa. Semuenzaniso, tinodaidza iyi frequency fo. Iyo inductor ichokwadi inductive coil, uye kuitira kubhadhara iro reactive simba reiyo coil, capacitor inobatanidzwa mukufanana pamativi ese ari maviri ecoil, ayo anoumba LC oscillating circuit. Kana iyo yakabuda frequency f ye thyristor inverter yakaenzana neyakasikwa oscillation frequency fo ye induction melting furnace loop, ipapo simba reiyo loop rakaenzana ne 1. Iyo yakanyanya simba ichawanikwa mu induction melting furnace. Zvinogona kuonekwa kubva pamusoro apa kuti zvisikwa oscillation frequency ye loop yakabatana nemaitiro eL uye C. Kazhinji, kukosha kwekubhadhara capacitor C kunogadziriswa, nepo inductance L inoshanduka nekuda kwekuchinja kwe permeability coefficient yechoto zvinhu. Iyo permeability coefficient μ yesimbi inotonhora yevira yakakura kwazvo, saka inductance L yakakura, uye kana tembiricha yesimbi yakakwira kupfuura Curie point, iyo permeability coefficient μ = 1 yesimbi, saka inductance L inoderera, saka. iyo induction yakanyungudutsa choto loop Iyo yakasikwa oscillation frequency fo ichachinja kubva pasi kuenda kumusoro. Kuti uite iyo induction smelting furnace inogara ichiwana iyo yakanyanya simba panguva yekunyungudutsa, izvi zvinoda kuti inobuda frequency f ye thyristor yepakati frequency magetsi magetsi anogona kuchinja nekuchinja kwe fo, uye gara uchichengeta frequency otomatiki yekutevera.

3 Zvimwe zvinodiwa kune thyristor yepakati frequency magetsi magetsi.

Izvi zvinodaro nekuti kana cheni yekuchaja ichinyungudika, kana yepakati frequency magetsi yatadza, iyo crucible ichakuvadzwa mumatambudziko akaomarara. Naizvozvo, iyo thyristor yepakati frequency magetsi inodiwa kuti ishande zvakavimbika, uye inofanirwawo kuve neinodiwa voltage-yekumisikidza ikozvino-inodzivirira kudzivirira, pamusoro-voltage uye pamusoro-ikozvino kudzivirira, uye kuvharwa kwemvura. Dziviriro, uye zvimwe otomatiki kudzivirira zvishandiso. Uye zvakare, zvinodikanwa kuti iyo thyristor yepakati frequency simba rekupa ine yakakwira yekutanga-up kubudirira chiyero, uye yekutanga-kumira kushanda kunofanirwa kuve nyore.