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Expansion Techniques

Developed by Fontijne Grotnes, used in production lines for the inner drums of tumble dryers, washing machines and dishwashers.

The inner liners are formed by the expansion of a metal blank.

Operations:
• Pre-expansion to form the rectangular blank
• Expanding to form the dimensions of the body and the door area
• Punching drain hole
• Flange folding (Seaming)
• Punching any other holes

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