Seals and igniters

摘要

An igniter has an inner electrode extending with a forward and rear ceramic sleeve. The rear end of the forward sleeve projects as a sliding fit within the forward end of the rear sleeve. A nickel alloy flange with a flexible shoulder has an inner neck brazed to a nickel layer on the outside of the rear sleeve. An outer collar on the flange is welded to the inside of the outer electrode to form a seal between the outside of the sleeve and the inside of the outer electrode. A metal cap is brazed to a nickel layer at the rear end of the rear sleeve and is welded to the inner electrode to seal the rear end of the rear sleeve.