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  • CPC process
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CPC process

Outline of the CPC process

The CPC process (Continuous Pouring process for Cladding), which FUJICO originally developed, consists of epoch-making technology for compound casting. It can carry out the cladding of special material, which is impossible to do using other methods.

The cladding layer has a uniform chemical composition and microstructure from the outer surface to the boundary, and spall at the boundary has never occurred because of a sound boundary with complete metallurgical bonding.

Furthermore, the cladding material and its thickness can be designed more freely. The rolls and rollers manufactured by the CPC process for rolling mills, leveling, and traversing lines have received high evaluation regarding excellent durability in Japan and all over the world.

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Manufacturing capability regarding size and material

Product type Solid and sleeve types
Diameter of product ø180 to 900mm
Length of cladding Max 8,000mm as-cast
Mass of product Max 20,000kg as-cast
Thickness of cladding
(as-cast)
Max.150mm as cast
Size and material
of core
Outside diameter ø150 to 800mm,
ordinary and special steel
Cladding material Cast iron, special cast iron. special cast steel and non-ferrous material, such as Stellite
photo:CPC equipment (pouring situation)

CPC equipment
(pouring situation)

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Features of the CPC process

The CPC process has three major features as follows:
(1)The high-alloying and multi-alloying of the shell material is easy.
(2)The cooling rate of solidification on the shell is high and a fine solidification structure can be obtained; and
(3)A strong and tough steel base material can be used for the core.
Further, the CPC process is said to be an ideal manufacturing process for composite type material that realizes the most important properties required for rolls and rollers, such as high wear resistance, high corrosion resistance, high surface roughening resistance, and excellent toughness.

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Products

  • Work rolls for hot-strip mill finishing trains

  • Wrapper rolls for down coilers in hot-strip mills

  • Run-out and roughening table rollers in hot-strip mills

  • Bottom pinch rolls for down coilers

  • Rolls for bars and wire-rod mills

  • Rolls for section mills

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