DIP Forming
Conform 

    Cathode feed to Dip Forming Plant

Hot Rolling Mill  of DIP Forming Plant

When a copper rod with clean shaven surface is passed at high speed through a molten copper bath, copper solidifies around the cold rod (called mother rod) and emerges from the bath with a larger diameter of 2.5 times the cross section of the mother rod. This rod is hot rolled in a controlled atmosphere.

Process

	The DIP Forming process comprises of two concurrent activities viz.: Electrolytically refined copper cathodes are melted in a mains frequency channel type induction furnace. The molten metal is continuously transferred to a inductively heated casting crucible. 40% of the copper rod produced by DIP Forming is recycled, drawn, shaved and then fed continuously into the casting crucible.
	The cast rod is then water cooled to hot rolling temperature, hot rolled in a tandem rolling mill and then cooled below 50 degree Celsius and coiled.
	Throughout the process the molten copper as well as the cast rod is maintained in a reducing atmosphere of hydrogen, carbon monoxide and nitrogen.
	The DIP Forming rod therefore has excellent properties

	Absence of shrinkage cavities and piping as the centre is the mother rod.
	Excellent drawability to very fine wire sizes.
	Smooth surface condition.
	Highly pure and oxygen-free composition.
	High conductivity.
	Excellent resistance to hydrogen embrittlement.

DIP Formed rod is therefore ideally suited for a wide variety of applications.