Rebuilding of Extruder Barrels

Rebuilding barrels is usually considerably more difficult than rebuilding screws. If the barrel wear does not exceed about 0.5 mm, the whole barrel can be honed to a larger diameter and an oversized screw can be placed in the machine. The obvious 

Rauwendaal, U. S. Patent 4,129,386, Extruder Screw to Increase Throughput  

Willert, paper given at Newark section of the SPE on February 8 (1961) 

Manas-Zloczower, A. Nir, and Z. Tadmor, Rubber Chem. Technol., 55,1250 (1983) 

Dispersives Mischen mit Dynamischen Mischern, VDI-Verlag, Duessel-dorf, 177-196 (1978) 

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