等离子弧技术是近代科学的一种新技术,在焊接领域中,它首先于切割技术,而等离子弧焊是近几年才发展起来的新工艺。等离子弧焊与一般的焊接方法相比,具有温度高、能量集中的特点,因而更适用于高熔点、易氧化、对焊接热敏感的材料的焊接,如不锈钢、耐高温合金、钼、钨、钽、钛、镍、铜和铝及其合金等。同时还具有焊接速度高、热影响区小、应力和变形小等特点。此外,等离子弧焊利用其高能量、 Plasma arc technology is a new technology in modern science. In the field of welding, it is the first in cutting technology, and plasma arc welding is a new technology developed in recent years. Compared with normal welding methods, plasma arc welding has the advantages of high temperature and energy concentration, so it is more suitable for high melting point, easy oxidation, welding of heat sensitive materials such as stainless steel, high temperature resistant alloy, molybdenum, tungsten, Tantalum, Titanium, Nickel, Copper and Aluminum and their alloys. At the same time also has a high welding speed, heat affected zone is small, stress and deformation characteristics. In addition, plasma arc welding using its high energy,