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我们在电弧炉的点火装置方面对各种点火办法进行分析后,认为利用高频引弧的原理来击穿电极间隙代替短路法(将电极于试样短路产生火花的办法),这一点火办法是比较理想的。但高频引弧一般需要有一只高压变压器,电压要升至300～500V才行。动作原理是这样的:此高压对电容器充电,充到放电盘击穿时,放电盘便开始对回路中的LC放电,即产生高频振荡(见图1)。再经过高频变压器耦合,并输出至电极间(电极与铜埚击穿放电)放电一即高频引弧。我们采用
After analyzing various ignition methods in the ignition device of electric arc furnace, we thought that the principle of high-frequency arc ignition was used to break down the electrode gap instead of the short circuit method (a method of shorting the electrode to the sample to generate a spark). This ignition method Is ideal. However, high-frequency arc generally need to have a high-voltage transformer voltage to rise to 300 ~ 500V Caixing. The action principle is this: This high voltage charges the capacitor, charging to the breakdown of the discharge disc, the discharge disc begins to discharge the LC in the loop, which produces high frequency oscillation (see Figure 1). And then through the high-frequency transformer coupling, and output to the electrode (electrode and copper breakdown breakdown discharge) that is, a high frequency arc. We use