冶焊(鑄件焊前不預热)是修补鑄鈇件缺陷的一种最簡便的方法,但是由于鑄鉄的本性,如用普通鋼焊条或普通鑄鉄焊条焊补时,焊着金属便会产生白口,不能用切削刀具进行机械加工。因此,一股用冶焊法釆焊补鑄鉄件加工面上的缺陷时,須用高价的蒙奈尔合金焊条、銅镍鑄鉄焊条或紫銅焊条,这样不但提高了成本,而且要消耗大量的鎳和銅,同时焊着金屬的組織和颜色也与基本金屬不一样。为了挽救在鑄造生产中造成的鑄鉄件废品,并节約高价的有色金屬焊条,笔者曾用各种成分 Metallurgical welding (without preheating castings) is one of the easiest ways to repair defects in castings. However, due to the nature of castings, when welding with normal or ordinary cast iron electrodes, the metal will be welded Produce white, can not use cutting tools for machining. Therefore, a method of metallurgical welding method of casting castings 鉄 pieces machining surface defects, the need to use expensive Monel alloy electrode, copper nickel cast iron electrode or copper electrode, so not only increased costs, but also consume a large amount Of nickel and copper, at the same time the structure and color of the welded metal is also different from the base metal. In order to save the castings produced in the casting production waste, and save expensive non-ferrous metal electrodes, I have used a variety of ingredients