FIELD: machine building.
SUBSTANCE: heating for soldering is carried out in ring inductor at 1100-1150°C. Cutter hear is first cooled at the rate of 100-150°C/min in industrial oil "И-20A" at 60-80°C for 10-15 s. Then, the holder is placed in oil at 18-20°C and tempered at 200°C.
EFFECT: higher hardness.
3 tbl, 2 dwg
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