Roll Bonding Overview
As a cost-effective, solid-state welding process, roll bonding passes two or more metals through a pair of flat rollers to bond dissimilar metals.
The key to creating a uniform, more temperature-resistant bond is surface preparation. We remove the oxides and apply a thin layer of inert chromium to the base metal before heating the base metal and cladding metal for rolling.
By combining pressure and temperature and reducing thickness, the roll flattening process breaks down the oxide layers of the metals and exposes the fresh metals. The fresh base metal and clad metal share electrons, which form a high-strength, roll bonded clad ready to be cut –by water jet or horizontal band saws– or manufactured into finished bimetal parts.
The roll bonded bimetals can be machined, perforated, bent and pressed into different shapes, including round, cylinder, beam and square. Roll bonded clad plate applications are often used by industries that manufacture thinner and smaller parts for structural, electrical and piping designs.
Our customers commonly use roll bond to join metals, free of intermetallic compounds, that cannot be traditionally welded, such as joining steel or stainless steel to nickel, copper and aluminum alloys.
Our roll bond process forms a uniform bond that is stronger than the weaker of the two metals and adds strength where it is needed and lighter materials where strength is not needed.