In supplying a complete line of hardened bore barrels, UNITED can help you manage the processing of a variety of extrudates. Numerous features are carefully considered before manufacture begins:

• Carbide Bimetallic; Extreme wear, furnace spun
• Standard Bimetallic; High wear, furnace spun
• CPM 9-v; Extreme wear, heat-treated
• D-2 Tool Steel; High wear, heat-treated
• Nitralloy 135; High wear, ion-nitrided

The different barrel types are very important to be supplied with a compatible feedscrew package to optimize processing. Each has a benefit to specific processes, cost-effectiveness and durability.

Reconditioned barrels can optimize barrel life. The re-sleeving process is an important cost-saving technique. During the process, the barrel core is reused and the worn bore is machined to accept a new sleeve, using the correct hardened bores to suit the application. The barrel is brought back to new specifications and guaranteed. It is not cost-effective in all cases, but generally yields a 30% to 40% savings. In the case of breakdowns, re-sleeving usually limits downtime considerably.

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