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第五章 电 子 束 炉 电子束炉是利用高速运动的电子的能量作为热源来进行熔炼或加热的一种电炉。 电子束炉的基本工作原理可以用普通的二极电子管来说明,如图1所示。发射电子的阴极和作为阳极的被加热材料共同处在一个高真空容器中,并分别接到直流电源的负极和正极上。阴极用其他的电源加热。它是用在高温时能发射电子的材料钨或钽做成的。工作时阴极被加热到高温而发射电子。这电子由于高压电场的作用而射向作为阳极的被加热材料,并在
Chapter 5 Electron Beam Furnace Electron beam furnace is the use of high-speed electronic energy as a heat source to carry out melting or heating of an electric furnace. The basic principle of electron beam furnace can be used to illustrate the ordinary diode, as shown in Figure 1. The electron-emitting cathode and the heated material as the anode are co-located in a high-vacuum vessel and are respectively connected to the negative and positive electrodes of a DC power source. The cathode is heated with a different power source. It is made of tungsten or tantalum, which emits electrons at high temperatures. When working, the cathode is heated to high temperature and emits electrons. This electron, due to the action of a high-voltage electric field, is directed toward the heated material as the anode and is at