An explanation of the term "bimetallic barrel" for plastics processing machinery 

The term “bimetallic” indicates that two different metals are fused together in a high-temperature furnace that subjects the two metals to temperatures of more than 2000^oF (>1100^oC).  

High revolution spinning of the white-hot cylinder fuses the inlay alloy to the bore wall.  Subsequent carefully controlled cooling creates a super-hard, highly uniform lining  in the cylinder bore that is further subjected to ultra-precise honing processes. The finished bore lining (a.k.a. "inlay") is at least .050" [1.27 mm] thick.

Double and even triple inlay thicknesses are available for specific applications. WEXCO's time-tested process employed in making bimetallic cylinders results in excellent cylinder performance and long service life in your extruder or injection press. 

There are only a handful of manufacturers in the world that are properly equipped to make spun-cast bimetallic injection and extrusion barrels. WEXCO is one of only three major companies in all of North- and South America.

We offer several barrel-lining alloys (inlay) designed to meet your specific processing requirements, and we will gladly assist you in selecting the most appropriate WEXCO inlay for your processing application. Please contact our Technical Sales Staff (Toll-free 800-999-3926 Press 1).

For a description of the various barrel inlay types WEXCO offers, go back to the menu and select
"Injection and Extrusion Barrels" (or simply click here)