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前言双热丝等离子堆焊,是将两根焊丝利用电阻预热后,送入等离子弧区进行堆焊的方法。经过反复试验,证明这种方法较氩弧堆焊及其它电弧堆焊工艺有着明显的优越性:热源利用合理、熔深浅而均匀、稀释率可控制在5%左右、生产率高(送丝速度比不预热时高2～3倍),且易于实现自动化生产,对大面积的自动堆焊比较适合。本试验是在普通低碳钢(A_3)上堆焊耐蚀层9—2铝青铜,用来制造耐蚀复合板。铝青铜的可焊性分析氧化性9—2铝青铜中含有9%的铝。铝是活泼
Preface Double hot wire plasma surfacing, is the use of two wires preheating resistance, into the plasma arc welding method for surfacing. After repeated tests, it is proved that this method has obvious advantages over argon arc welding and other arc welding processes. The utilization of heat source is reasonable and shallow and uniform. The dilution rate can be controlled at about 5%, and the productivity is high (wire feed speed ratio Not preheated 2 to 3 times higher), and easy to automate the production of large areas of automatic welding more suitable. This test is in the ordinary low-carbon steel (A_3) corrosion resistant layer deposited on the 9-2 aluminum bronze, used to manufacture corrosion-resistant composite board. Solderability Analysis of Aluminum Bronze Oxidized 9-2 aluminum bronze contains 9% aluminum. Aluminum is lively