Patent ID: 9463533
Filing Date: 2016-10-11
CPC Classification: B23P,B24B,F05D,Y10T

Claim Text:
1. A method for salvaging a used turbocharger compressor housing, the compressor housing defining an axial line G and comprising a body having an interior surface, a substantially cylindrical air inlet external port extending axially and forwardly from the body, a substantially cylindrical air inlet internal port extending axially and forwardly from the body and being substantially concentric with the air inlet external port, the air inlet internal port defining an internal diameter F, a compressed air outlet port extending roughly tangentially from the body, and an annular ring extending substantially axially and rearwardly from the body, the annular ring having a substantially flat rear surface and a substantially cylindrical interior surface, the method comprising the steps of: (a) mounting the compressor housing on a lathe chuck having chuck jaws abutting the substantially flat rear surface of the annular ring and contacting at least 270 degrees of the substantially cylindrical interior surface and removing original base material from the interior surface to a substantially uniform depth by reaching through the air inlet internal port with a cutting tool while rotating the compressor housing to produce a machined portion of the interior surface; (b) grit blasting the machined portion to produce a grit blasted area; (c) coating the grit blasted area with a metalized coating to a depth exceeding operating specifications; and (d) mounting the compressor housing to a second lathe using a chuck having chuck jaws abutting the substantially flat rear surface and the substantially cylindrical interior surface of the annular ring and machining the interior surface with a cutting tool inserted into the compressor housing through the air inlet internal port while the compressor housing is rotated about the axial line G to remove a portion of the metalized coating, thereby restoring the interior surface of the compressor housing to the operating specifications.