E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 21/00 (2006.01)
Patent
CA 2484939
The invention refers to a method for the production of a metal mining plug with grooves applied to the exterior thereof. In order to achieve an easy and simple manufacture of the metal mining plug and to achieve at the same time a long durability of the metal mining plug when being used in rock mass, a metal mining plug is formed of a flat material which is provided with grooves and which is formed to a tube by means of cold rolling.
L'invention concerne un procédé de fabrication d'une cheville métallique pour exploitation minière, présentant des encoches sur sa face extérieure. L'objectif de cette invention est de permettre une fabrication simple et facile de cette cheville métallique pour exploitation minière, tout en garantissant une longue durée de vie de ladite cheville lors de son utilisation dans de la roche. A cet effet, cette cheville métallique pour exploitation minière est formée à partir d'un matériau plat pourvu d'encoches et façonné sous la forme d'un tube par laminage à froid.
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