Method for making a bung for a metal cask

Details Method for making a bung for a metal cask Method for making a bung for a metal cask

B - Operations, Transporting

21

D

B21D 51/40 (2006.01) B21D 51/18 (2006.01) B23G 1/16 (2006.01) B23G 7/02 (2006.01)

Patent

CA 2397629

The invention concerns a method for making a threaded bung for a thin-walled metal cask. The invention is characterised in that it consists in: forming a shaft (14) by dimpling the cask wall (11) and forming a thread inside said shaft, preferably by roller (18) tapping.

Réalisation d'une bonde filetée dans un fût métallique à paroi mince. Selon l'invention, on forme une cheminée (14) par emboutissage de la paroi (11) du fût et on forme un filetage à l'intérieur de cette cheminée, de préférence par taraudage à molette (18).

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