To provide a squeeze roll for producing an electric resistance welded pipe, the squeeze roll being prevented from being broken by thermal shock when it is used by improving thermal shock resistance and strength of a silicon nitride-based ceramic.
The squeeze roll for producing the electric resistance welded pipe is used for producing the electric resistance welded pipe, wherein at least a part brought into contact with a base material for the electric resistance welded pipe is formed from a sintered compact containing silicon nitride as a main component, and the sintered compact has a thermal conductivity at normal temperature of ≥50 W/(m×K). Further, the sintered compact containing silicon nitride as the main component contains aluminum in an amount of ≤0.2 wt.% and oxygen in an amount of ≤5.0 wt.%.
HAMAYOSHI SHIGEYUKI
NOGAMI SHINGO
| JPH0471726A | 1992-03-06 | |||
| JPH07187793A | 1995-07-25 | |||
| JP2001010864A | 2001-01-16 | |||
| JPH04118114A | 1992-04-20 |
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