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一、加热方法加热被加工材料的方法较多,如用煤气燃烧器加热、激光局部加热等,本文论及的是以从等离子焊炬喷出的等离子弧作热源来加热被切削材料的加热方法。等离子弧是一种具有高温、高能量密度的热能源,与焊弧比较,其能量密度是焊弧的10～100倍,并且容易发生1～3万度的高温等离子弧,所以广泛用于各种金属的切割、焊接等加工。本文介绍的加热切削,没有用专用等离子加热
First, the heating method There are many methods of heating the material being processed, such as heating with a gas burner, laser local heating, etc. This article deals with the heating method of heating the material to be cut by using the plasma arc emitted from the plasma torch as a heat source . Plasma arc is a kind of thermal energy source with high temperature and high energy density. Compared with arc welding, its energy density is 10 ~ 100 times higher than that of arc welding, and it is easy to produce high temperature plasma arc of 1 ~ 30,000 degrees. Therefore, it is widely used in Metal cutting, welding and other processing. This article describes the heating cutting, no special plasma heating