Clad Strip Casting by a Roll Caster

Abstract

Casting of clad strip, which was one of the composite alloys, was tried using a roll caster. A vertical tandem type twin roll casters for clad strip were designed and assembled to cast the clad strip. Three layers of clad strip could be cast. The interface between the base strip and overlay strip was clear. The as-cast clad strip could be cold rolled without peeling at the interface. The element of the each strip did not diffuse to another strip at the interface. The effects of the roll speed and melt temperature of the overlay strip on the cladding of the strip were investigated.

Twin Roll Caster for Clad Strip

“…A schematic illustration of a vertical-type tandem twin roll caster (VTTRC) is shown in Figure 1 [13][14][15][16][17][18][19][20][21][22][23]. Casting is conducted in an oxidizing atmosphere.…”

“…Factors affecting the bonding were investigated [17][18][19]. The effect of the temperature of the base strip on bonding between the base strip and the overlay strip was investigated [20].…”

“…Si, an element of the 4045 alloy overlay strip, did not diffuse into the base strip [13][14][15]23]. As shown in Figure 17b, the base strip was 8079 alloy and the overlay strip was 6022 alloy, and the Fe in the 8079 alloy base strip did not diffuse into the overlay strip [17,19]. There was no diffusion of elements between the base and overlay strips.…”

“…In the past 20 years, the design and testing of twin roll casters to cast clad strips has been conducted at the Osaka Institute of Technology (O.I.T.) to resolve these problems [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. Two types of twin roll casters for clad strips were designed, assembled, and used to cast clad strips in an oxidizing atmosphere.…”

“…Two types of twin roll casters for clad strips were designed, assembled, and used to cast clad strips in an oxidizing atmosphere. One is a vertical-type tandem twin roll caster and the other a twin roll caster equipped with a scraper [13][14][15][16][17][18][19][20][21][22][23]. The vertical-type twin roll caster can cast three-and five-layer clad strips.…”