Apparatus and method of making filaments

Metal founding – Process – Shaping liquid metal against a forming surface

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164 87, 164423, 164427, B22D 1106

Patent

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041507088

ABSTRACT:
An improved apparatus and method for making solid filamentary elements from a pendant drop of a high melting point material (e.g. hafnium, zirconium). The improvement constitutes providing a protective layer in the form of a thin film on the circumferential edge of the casting wheel prior to engagement of the drop and release of the elements. The layer material serves to reduce heat flow from the drop material to the wheel as well as prohibit bonding of the drop material thereto. The preferred layer materials are aluminum, carbon (e.g. graphite), boron nitride, and borosilicate glass.

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