Metal deforming – With cleaning – descaling – or lubrication of work or product – Lubricating
Patent
1977-07-27
1978-12-12
Combs, E. M.
Metal deforming
With cleaning, descaling, or lubrication of work or product
Lubricating
72267, B21C 2332, B21D 3718
Patent
active
041290224
ABSTRACT:
An initial well is formed into the rear end of a cylindrical billet thereby providing a centering collar. The billet is additionally centered at the receiver bottom and pierced by a frustoconical mandrel under retention of the well.
REFERENCES:
patent: 2261304 (1941-11-01), Sparks
patent: 2791924 (1957-05-01), Sawyer
patent: 2956337 (1960-10-01), Buffet et al.
patent: 3777528 (1973-12-01), Sirantoine
patent: 3818733 (1974-06-01), Cauley et al.
Thonnes Horst
Wunsche Joachim
Combs E. M.
Mannesmann Aktiengesellschaft
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