Generally speaking, the types of cored wire include calcium silica cored wire, ferro-titanium cored wire, ferro-boron cored wire, calcium silico-manganese cored wire, rare-earth silica-magnesium cored wire, rare-earth silica-barium cored wire, calcium silica-barium-aluminum cored wire, magnesium-metal cored wire, calcium-iron cored wire, calcium iron cored wire, calcium-iron cored wire, pure calcium cored wire, calcium-aluminum cored wire, and rare-earth. Its packaging methods generally include flat cable packaging: horizontal and vertical flat cable packaging, divided into two packaging methods: internal tapping type and external release type.

Characteristics of core wire packaging: 1, conducive to regulating the content of easily oxidized elements and trace elements, greatly improve the alloy yield, reduce smelting costs, shorten the smelting time, precise control of the composition. 2, can purify the liquid steel and partially change the nature and shape of inclusions, improve the quality of the liquid steel and improve the casting state. 3, the core wire is divided into two kinds of internal pulling-type and external release type, the mechanical equipment required to feed the line is simple and reliable, covers an area of small Especially the inner pulling type core wire is more suitable for use in narrow places.