| 摘要 |
PROBLEM TO BE SOLVED: To obtain hot forged parts excellent in wear resistance without sacrificing hot workability and performing special surface treatment. SOLUTION: After applying a slurry S1 containing aluminum powder to the forming surface in the impression 5 of a preheated lower die 3 and the forming surface in the impression 6 of a preheated upper die 4 and applying a slurry S2 containing a nitride such as BN, Si<SB>3</SB>N<SB>4</SB>to the surface of a heated base stock ( ferrous material ) 1 to be forged, by performing striking and promoting the reaction between the nitride and the aluminum under high temperature and high pressure, AlN is generated in the outer layer part of the forged parts. COPYRIGHT: (C)2004,JPO&NCIPI
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