US 12,263,549 B2
Carbide seat remanufacturing
Abel Noriega, II, Corinth, MS (US); Curtis John Graham, Peoria, IL (US); Christopher Anthony Kinney, Iuka, MS (US); Connor J Docherty, Fort Worth, TX (US); and Blake Messer, Weatherford, TX (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Aug. 23, 2023, as Appl. No. 18/237,365.
Prior Publication US 2025/0065452 A1, Feb. 27, 2025
Int. Cl. B23P 6/00 (2006.01); B24B 15/02 (2006.01); E21B 43/26 (2006.01)
CPC B23P 6/00 (2013.01) [B24B 15/02 (2013.01); E21B 43/2607 (2020.05)] 10 Claims
OG exemplary drawing
 
1. A remanufacturing method for a valve seat, the remanufacturing method comprising, for each of one or more used valve seats:
receiving the used valve seat, wherein the used valve seat comprises an insert, and wherein the insert comprises a tapered surface and a shoulder surface;
when the insert is salvageable, cleaning the insert manually or mechanically;
when the cleaned insert is sufficient for reuse, pairing the insert with a first new body having a same pocket as a prior body in which the insert was most recently used;
when the cleaned insert is insufficient for reuse, grinding the tapered surface of the insert to a first depth manually or mechanically, such that at least a portion of the shoulder surface remains;
when the ground insert is sufficient for reuse, pairing the insert with the first new body having the same pocket;
when the ground insert is insufficient for reuse, further grinding manually or mechanically the tapered surface of the insert to a second depth, such that no portion of the shoulder surface remains; and
when the further ground insert is sufficient for reuse, pairing the further ground insert with a second new body having a shallower pocket than the prior body.