Welding method for rotatable shafts
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United States of America Patent
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Sep 20, 1994
Issued Date -
N/A
app pub date -
Jan 14, 1994
filing date -
Oct 6, 1992
priority date (Note) -
Expired
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Abstract
An improved welding method is provided for repairing broken rotors. The welding method preferably employs a 2.25Cr-1.0Mo-0.3V-type filler metal, preferably deposited using a narrow groove welding technique. The broken pieces are aligned end to end. A narrow groove is formed to substantially remove the end surfaces. The groove is preheated, filled with the welding filler metal, and postheated, resulting in a strong, high temperature resistant, long lasting weld.
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