Product News - Ceramic-Lined Barrels Live Longer When ProcessingCorrosive Compounds

September 30, 1999

Ceramic-Lined Barrels Live Longer When Processing Corrosive Compounds

PN_21-10A ceramic-lined barrel is said to extend barrel life in applications where nylon 6/6, PVC and other corrosive compounds are used. A field test conducted over a three-year period in an application running nylon 6/6 revealed 'virtually no barrel wear after 12 million cycles of injection molding.'

The company adds that in some cases, the ceramic-lined barrel can increase life by 10 times or more.

The barrel, which can be produced from D2 or other alloys, is treated with a composite ceramic material that is thermochemically bonded to the interior surface of the barrel. Producing a ceramic thickness of 0.002 to 0.003 in., an interphase between the ceramic material and the metal surface creates a bond that results in a substrate with a bond strength in excess of 10,000 psi. The surface leaves no porosity for chemical corrosion to occur.

In tests, the barrel exhibited 'extreme wear and chemical resistance, low friction and a hardness range of 1000 to 1850, Vickers.' For pricing information, contact the company directly. Use the Key Contact Directory on p 64.

General Plastex
Barberton, OH

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