一、前言在焊接工业中，有一种气体保护焊，即利用一些具有特殊性能的化学元素作为保护，防止焊接时金属被氧化。这种根据元素的氧化一还原化学特性，经过合理配制而成的焊剂又称助焊剂。日本八十年代初开发研制出了钢材气压焊中端面活化用爆剂（简称“焊接活化剂”）已被广泛 I. Introduction In the welding industry, there is a gas shielded welding, that is, the use of some special chemical elements as a protection, to prevent the metal is oxidized when welding. This element according to the oxidation of a reduction chemical properties, after properly formulated flux also known as flux. Developed in Japan in the early eighties steel pressure welding end face activation detonator (referred to as “welding activator”) has been widely