Dab tsi ntawm qhov nruab nrab zaus fais fab mov tuaj yeem ua tau raws li qhov yuav tsum tau ua induction melting rauv?

1 The output power requirements of the induction melting furnace for the thyristor intermediate frequency power supply.

The output power of the thyristor intermediate frequency power supply must meet the maximum power of the induction melting furnace, and the output power can be easily adjusted. This is because the life of the crucible of the induction melting furnace is usually about tens of furnaces and it is damaged. The crucible furnace lining must be rebuilt, and after the new crucible furnace lining is built, a low-power oven must be performed on it.Usually, the furnace starts from 10-20% of the rated power, and then increases the power by 10% at regular intervals until the rated power power. Furthermore, in the furnace process, when the charge is melted, the composition of the charge must be tested. During the test, in order to prevent the charge from melting and boiling violently, the intermediate frequency power supply must reduce the output power to keep the charge warm. In view of the above situation, it is required that the thyristor intermediate frequency power supply can be easily adjusted from 10%-100% of the rated output power. The diathermic furnace used for forging does not have a baking process.

2 Cov zis zaus yuav tsum tau ntawm qhov induction melting rauv rau thyristor nruab nrab zaus fais fab mov.

Kev sib raug zoo ntawm hluav taws xob efficiency thiab zaus ntawm ib qho induction melting rauv yog muaj feem xyuam. Pib los ntawm kev siv hluav taws xob, qhov tso zis zaus ntawm thyristor nruab nrab zaus fais fab mov tuaj yeem txiav txim siab. Piv txwv li, peb hu qhov zaus fo. Lub inductor yog ib qho inductive kauj, thiab txhawm rau txhawm rau txhawm rau lub zog reactive ntawm lub kauj, lub capacitor txuas nrog nyob rau tib lub sijhawm ntawm ob qho kawg ntawm lub kauj, uas yog LC oscillating circuit. Thaum cov zis zaus f ntawm thyristor inverter yog sib npaug rau lub ntuj oscillation zaus fo ntawm lub induction melting rauv voj, ces lub zog ntawm lub voj yog sib npaug rau 1. Lub zog siab tshaj plaws yuav tau txais nyob rau hauv induction melting rauv. Nws tuaj yeem pom los ntawm cov saum toj no hais tias lub ntuj oscillation zaus ntawm lub voj yog cuam tshuam nrog qhov tseem ceeb ntawm L thiab C. Feem ntau, tus nqi ntawm cov nyiaj them poob haujlwm capacitor C yog tsau, thaum lub inductance L hloov vim qhov kev hloov ntawm qhov. permeability coefficient ntawm cov khoom siv hluav taws xob. Lub permeability coefficient μ ntawm txias rauv hlau yog loj heev, yog li qhov inductance L yog loj, thiab thaum kub ntawm cov hlau yog siab tshaj Curie point, permeability coefficient μ = 1 ntawm cov hlau, yog li cov inductance L txo, yog li ntawd. lub induction melting rauv voj Lub ntuj oscillation zaus fo yuav hloov ntawm qis mus rau siab. Txhawm rau ua kom lub qhov cub induction smelting ib txwm tau txais lub zog siab tshaj plaws thaum lub sij hawm smelting txheej txheem, qhov no yuav tsum muaj qhov tso zis zaus f ntawm thyristor nruab nrab zaus fais fab mov tuaj yeem hloov pauv nrog kev hloov ntawm fo, thiab ib txwm khaws cov zaus tsis siv neeg taug qab.

3 Lwm qhov yuav tsum tau ua rau thyristor nruab nrab zaus fais fab mov.

Qhov no yog vim hais tias thaum lub qhov cub hluav taws kub smelting, thaum lub sij hawm nruab nrab zaus fais fab mov tsis ua hauj lwm, lub crucible yuav puas nyob rau hauv loj heev mob. Yog li ntawd, thyristor nruab nrab zaus fais fab mov yuav tsum tau ua hauj lwm ntseeg tau, thiab nws kuj yuav tsum muaj qhov tsim nyog voltage-limiting tam sim no-limiting tiv thaiv, dhau-voltage thiab over-tam sim no tiv thaiv, thiab dej txiav. Kev tiv thaiv, thiab lwm yam khoom siv tiv thaiv tsis siv neeg. Tsis tas li ntawd, nws yuav tsum tau hais tias lub thyristor nruab nrab zaus fais fab mov muaj qhov pib ua tau zoo, thiab kev pib-nres yuav tsum yooj yim.