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从应用焊剂的各种焊接工作中所积累的經验証明,任何一种焊剂都应当滿足一定的要求,这些要求通常分为冶金方面和工艺方面的两类。这些要求的作用各不相同,而且随着焊接方法的改变而变化。在一般焊剂层下焊接时,冶金要求最为重要。滿足冶金要求是决定普通电弧焊焊剂是否合用的决定性因素,因为在一般电弧焊过程中,熔渣与液态金屬之間的化学反应进行得很强烈,因此对焊縫金屬的成分,組織和机械性能,以及对焊缝
The experience gained from the various soldering operations that apply fluxes demonstrates that any type of flux should meet certain requirements that are generally classified into two categories, metallurgical and process. The role of these requirements varies, and with the welding method changes. Metallurgical requirements are most important when welding under normal flux layers. Satisfying metallurgical requirements is a decisive factor in determining whether a common arc flux can be used in combination because the chemical reaction between the slag and the liquid metal progresses very strongly in a typical arc welding process. Therefore, the composition, microstructure and mechanical properties of the weld metal , As well as on the weld