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本文研究了P18高速钢在供应条件下和补充热处理后的显微组织。试验表明,补充热处理能提高刀具耐用度0.5～1倍。——编者在长时间退火下,稳定碳化物WC的形成
In this paper, the microstructure of P18 high speed steel under the conditions of supply and after heat treatment was studied. Experiments show that supplementary heat treatment can improve the tool durability of 0.5 to 1 times. - Editor in a long time annealing, the formation of stable carbide WC