Plasma arc welding engineering research present situation and application
会议名称：《The 9th Asia-Pacific Conference on Plasma Science and Technology and 21st Symposium on Plasma Science for Materials》
会议日期：2008年
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
摘 要：正Takes the heat source using the plasma arc the welding *** gas has the dissociation by the electric-arc heating,when high speed through water cooling spray nozzle receives the compression,increases the energy density and the degree of dissociation,forms the plasma *** stability,the calorific capacity and the temperature all are higher than the common electric arc,thus has the big melt thoroughly strength and the welding *** the welded joint the way to have melts thoroughly the type and the perforation type two *** preceding form plasma arc only melts thoroughly the parent metal,forms the welding molten bath,uses in 0.8～3 millimeter thick plate welding;The latter form plasma arc only melts puts on the plate,forms the key hole shape the molten bath,uses in 3～12 millimeter thick plate *** addition,but also has the undercurrent micro to tie the plasma arc welding,suits specially in 0.02～1.5 millimeter thin steel plate welding.