Posts: 2
From:Switzerland
Registered: Jan 2003

posted January 16, 2003 08:44 AM               

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Anybody using bimetallic equipement for this use? I am looking for your comments what units are best.

We are producing anticorrosive bimetallic cylinders and suggest Hastelloy screws with Stellit 6 protected flanks.

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We produce the best screws and barrels for you!

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Posts: 386
From:McHenry, IL USA
Registered: Nov 2002

posted January 17, 2003 08:16 AM               

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Staub: For this application, I somewhat recall a special grade of a stainless steel's for both barrel and screw. However, the Project I was involved with years ago - crashed due to limited amounts of the feed stock (the resin). There is some processing corrosiveness involved.

Maybe DuPONT may have an answer for you, or the material supplier that your dealing with.

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Posts: 115
From:Amesbury, Mass
Registered: Nov 2002

posted January 17, 2003 11:36 AM               

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If memory serves, the Xaloy 306 grade liner can be used with PTFE. I think there is also a Bimex equivalent, but I don't know what they call it.

-Bob Cunningham

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Posts: 25
From:Cocoa Florida USA
Registered: Nov 2001

posted January 21, 2003 11:31 AM               

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The standard bimetallic barrels for corrosion are as follows,

Wexco 555
Bimex (Now New Castle) Cr-3650
Xaloy 306

However if iron contamination is a problem the HIPS process is recommended.

Wexco Bo-22
Xaloy 309

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