Patent ID: 9644504
Date: 2017-05-09
CPC Classifications: B23K,C22C,F01L

Claim:
1. An engine valve for use in an internal combustion engine, the engine valve comprising: a stem having a first end and a second end; a tip positioned at the first end of the stem; and a head portion having a filet and a combustion face, the head portion being attached to the second end of the stem, wherein the head portion is cast from a single crystal metal, the single crystal metal having weight percentages of one of (a) 6.5% Cr, 9.0% Co, 0.6% Mo, 6.0% W, 6.5% Ta, 3% Re, 5.6% Al, 1.0% Ti, 0.10% Hf and the balance is nickel or other materials, (b) 8.0% Cr, 5.0% Co, 0.6% Mo, 8.0% W, 6.0% Ta, 5.6% Al, 1.0% Ti, 0.10% Hf and the balance is nickel or other materials, (c) 7.0% Cr, 7.5% Co, 1.5% Mo, 5.0% W, 6.5% Ta, 3% Re, 6.2% Al, 0.15% Hf and the balance is nickel or other materials, or (d) 4.2% Cr, 12.5% Co, 1.4% Mo, 6.0% W, 7.2% Ta, 5.4% Re, 5.8% Al, 0.15% Hf and the balance is nickel or other materials.