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熔劑熔煉的基本原理每一种自動焊熔剂都具有較複雜的而且是多种的化学成分,伹它總由二种或三种數量較多的組成物作为該熔剂的基礎。这些組成物不外乎MnO、SiO_2、CaO。为了使这些熔剂的基礎更適合於焊接性能,也就是使它們具有恰当的熔化温度和粘度,乃加入CaF_2,TiO_2、Al_2O_3等組成物,卽所謂附加材料。在熔剂的製造冶煉过程中,往往使熔剂具有某些不可避免的雜質,如S、P、FeO等。当然,这些雜質是我們不能容許的。它將在焊接冶金过程中起不良作用,致使焊接接头的机械性能減低,在焊接过程中呈現裂紋;因此我們对它們有嚴格的限
Fundamentals of smelting Each automatic flux has a complex and diverse chemical composition that always consists of two or three more components as the basis for the flux. These compositions are nothing more than MnO, SiO_2, CaO. In order to make the basis of these fluxes more suitable for the welding properties, that is, to have proper melting temperature and viscosity, CaF_2, TiO_2, Al_2O_3 and the like are added, so-called additional materials. Flux in the manufacture of smelting process, the flux often have some unavoidable impurities, such as S, P, FeO and so on. Of course, these impurities we can not allow. It will have an adverse effect on the welding metallurgy process, resulting in reduced mechanical properties of the welded joints and cracks during the welding; therefore, we have strict limits on them