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板極电渣焊的特点板極电渣焊是电渣焊的一种新方法,它与普通焊丝电渣焊相上较有下列特点: 1.板極电渣焊是在普通焊丝电渣焊所具有的优点的基础上,用一个或几个截面积较大的金属板条代替焊丝作为熔化电極。当电流通过板極及母材之间的熔渣时发出大量的热,使渣池达到很高的温度,把板極及工件边缘熔化混合成一个熔池。随着过程的进行,板極逐渐熔化,并等速地向渣池送进,使钢板浸入渣池中,并与渣池底部保持一定的距离。板極的数量可以是一个,也可以是三个或更多个。 2.板極的截面积此普通焊丝电渣焊的焊丝电極总截面积要大许多倍,而电流密度则较小,一般为0.8～1.2安培/公厘~2。虽然电流密度小,但在焊接大厚工件时,总
The characteristics of plate Electroslag welding Plate electroslag welding is a new method of electroslag welding, electroslag welding with ordinary wire welding phase has the following characteristics: 1. Plate electrode electroslag welding is ordinary wire electroslag welding Based on the advantages, one or more metal strips with larger cross-sectional area are used instead of the welding wire as the melting electrode. When the current through the plate and base metal slag between the issue of a lot of heat, the slag pool reached a very high temperature, the plate and the workpiece edge melt mixing into a pool. As the process progresses, the plate gradually melts and feeds the slag pool at a constant rate, allowing the steel sheet to immerse in the slag pool and maintain a certain distance from the bottom of the slag pool. The number of plates can be one, or three or more. 2. Plate cross-sectional area of the common electrode electroslag welding wire electrode total cross-sectional area to be many times larger, while the current density is smaller, usually 0.8 ~ 1.2 amps / mm ~ 2. Although the current density is small, but when welding large thick workpiece, the total