US 12,296,380 B2 · Seal ring

Abstract

A nickel-based alloy for forming a seal ring is disclosed. Such seal rings, in use may be static or rotating and may be used in a variety of applications, such as in wheel assemblies of machines. Using the alloy, the seal ring may be manufactured using a centrifugal casting method. The disclosed alloy includes a chromium content greater than at least 13.5% by weight, a boron content less than 3% by weight, a carbon content less than 2% by weight, and nickel content greater than 70% by weight. The nickel alloy may have a carbon plus boron atomic content divided by chromium atomic content less than 1.1. This alloy allows for the rapid cooling of centrifugal casting while maintaining a grain morphology suitable for relatively low leakage and relatively high durability. When the alloy is formulated, the seal ring is formed by centrifugal casting.

Claims20

Dependent claims

A seal ring, comprising:

a body, the body being annular and having a seal end;
and
a seal flange disposed at the seal end of the body, the seal flange circumscribing the body,
wherein the seal ring is made from an alloy, the alloy including:
less than 4% by weight of silicon (Si),
greater than 13.5% by weight of chromium (Cr),
less than 3% by weight of boron (B),
less than 2% by weight of carbon (C), and
greater than 70% by weight of nickel (Ni), wherein an atomic concentration of B plus an atomic concentration of C divided by an atomic concentration of Cr is less than 1.1.

6 more elements

Dependencies are inferred from the claim text.

Seal ring

Life of this patent

Seal ring

Life of this patent

Abstract

Claims20