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淬火时效的铝合金在焊接时其强度降低很多,而焊接强度能由天然或人工时效来改善,英国Royal军事科学院认为利用爆炸振动处理提供了更加直接的方法。该学院所焊接的厚度为0.4时的铝合金板其成分为铝4.22,锌2.46,镁0.26,铁0.13,硅0.28,铝合金板所承受的振动载荷可由下列两种爆炸物质所产生,一种是厚度为0.6时颗粒状爆炸物质焊层,一种是厚度为0.128时等爆炸物质焊层,爆炸焊层要足以覆盖焊接区域和热影响区域。该项技术的研究可归纳如下: (1)焊接后立即爆炸振动的载荷改善了强度,提高了热影响区域的硬度,薄层的爆炸物质较颗粒状爆炸物质更加反应灵敏。 (2)在振动处理后再自然时效可使热
Quenched aluminum alloys have a much lower strength when welded, and weld strength can be improved by natural or artificial aging. The Royal Military Academy of Sciences in the United Kingdom believes that the use of explosive vibration processing provides a more direct method. The college welding aluminum alloy plate thickness of 0.4 when the composition of aluminum 4.22, 2.46 zinc, magnesium 0.26, 0.13 iron, 0.28 silicon, aluminum plate can withstand the vibration load generated by the following two kinds of explosives, a Is a thickness of 0.6 when the granular explosive material welding layer, one is the thickness of 0.128 and other explosive material welding layer, explosive welding layer should be sufficient to cover the welding area and heat affected zone. The study of the technology can be summarized as follows: (1) Explosion immediately after welding The load of vibration improves the strength and enhances the hardness of the heat-affected zone. The thin layer explosive is more responsive than the granular explosive. (2) natural aging after vibration treatment can make heat