Patent ID: 8215130

Claim:
A spinner for fiberizing glass wherein the fiberizing disc has a plurality of holes for fiberizing glass in an annular peripheral sidewall of the spinner, the spinner sidewall extends upward from a spinner base, and, in service, the spinner is rotated at high rotational speeds in a high temperature environment to extrude glass through the fiberizing holes and fiberize the glass, the spinner comprising: a disc shaped base and an annular peripheral sidewall of an alloy material extending upward from an outer edge portion of the base; a plurality of fiberizing holes in the sidewall formed by means of an electron beam perforating process that utilizes a backing material on a side of the sidewall opposite that from which an electron beam is directed onto the sidewall wherein, for each of the plurality of fiberizing holes: an interaction of the backing material with the electron beam during the electron beam perforating process creates a gaseous backing material, and the backing material is positioned relative to the sidewall so that a sufficient volume of gaseous backing material produced by the interaction of the backing material with the electron beam expands through a hole created by the electron beam in the sidewall to eject molten alloy material of the sidewall made molten by the electron beam from the hole and deposit a thin substantially uniform coating layer of the backing material on a substantially cylindrical shaped wall of the hole for increasing the corrosion resistance of the hole is service, the backing material comprising a first corrosion resistance and being heat treatable to transform the backing material of the thin coating layer into a material comprising a second corrosion resistance, the second corrosion resistance being enhanced compared to the first corrosion resistance.