Welding accessory

B - Operations – Transporting – 23 – K

Patent

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B23K 9/20 (2006.01) B23K 9/32 (2006.01) B23K 35/02 (2006.01) H05B 7/02 (2006.01)

Patent

CA 2029664

A welding accessory which includes an arc shield having outer and inner peripheral surfaces such that a weld can be formed within the inner peripheral surface as the arc shield shields the weld from external air during forming of the weld. The arc shield includes a ceramic material having not less than 40 weight % of boron nitride. The arc shield may be formed of a composite of boron nitride and silicon nitride, a composite of boron nitride and alumina nitride, a composite of boron nitride, aluminum and silicon nitride, or a composite of boron nitride and zirconia.

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