The invention discloses a
copper clad
welding rod and a manufacturing method thereof, wherein the
copper clad
welding rod comprises a
metal core and a
welding flux covering; the
metal core comprises a working part and a holding part that are fixedly connected with each other; the welding flux covering is covered outside the working part; the working part is an iron
alloy wire; and the holding part is a
copper-plated aluminum wire; the length ratio between the holding part and the working part is 1:7-8; and the welding flux covering comprises the following components: 20-25 parts by weight of
albite, 10-12 parts by weight of
potassium carbonate, 6-10 parts by weight of
calcium carbonate, 20-25 parts by weight of
sodium silicate, 1-3 parts by weight of nanometer
titanium dioxide, 2-3 parts by weight of nanometer
ferric oxide, 1-1.5 parts by weight of
manganese dioxide, 0.5-1 part by weight of
rare earth lanthanum, 8-12 parts by weight of kaolin, and 6-10 parts by weight of Zuoyuntu (a
raw material for
electroceramics originating in Zuoyun County, Shanxi Province, China). The method comprises the steps of frictionally welding the working part with the holding part, and then
coating the welding flux covering. By employing the contact
interface design of the working part and the holding part of the welding rod, and utilizing the different characteristics of the
metal and the welding flux covering, automatically releasing the welding rod head is achieved when the welding rod is about to run out, thereby thoroughly avoiding the residual of the welding rod head.