Wear Protection in Plastics Processing by Using Ceramic Components

✍ Scribed by M. Rudschuck; E. Iarskaia; H. Hartig

• Book ID: 102499286
• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 183 KB
• Volume: 37
• Category: Article
• ISSN: 0933-5137
• DOI: 10.1002/mawe.200600001

✦ Synopsis

Still, wear and corrosion of plastics processing machines, e. g. plasticizing units, are a common problem in the plastics processing industry. Whenever glass fibre reinforced resins are processed the common steels and hard facings used for plasticizing units reach their limits concerning the wear properties. A solution of this problem is the substitution of steel based materials by high performance ceramics. When substituting steel by ceramics the specific conditions of a plastics processing device have to be taken into account. The most critical conditions are the temperature range from 25 to 350 C and the cyclic pressure load up to 400 bar. Furthermore a possible corrosive attack, e. g. by halogenated resins as polyvinyl chloride, has to be taken into account. To screen different high performance ceramics for their suitability in plastics processing machines the so called platelet apparatus was used. It could be shown that compared with common steels like 34CrAlNi7 the wear could be reduced by one magnitude.