| 摘要 |
An installation for treating metal wire, such as for coating a copper conductor, comprises at its upstream end a stationary wire-supply source having a reel support disposed within a loop-guard made of a gray iron or ductile cast-iron part in the form of a hollow body of revolution having an ogival profile. This part bears at its downstream end a conical tip defining the exit aperture for the wire. The inner surface of the loop-guard is machined by turning so as to be absolutely smooth and may also be subjected to a hardening treatment.
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