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冷拔建筑用钢筋的钢丝模是用YG_6、YG_8硬质合金制成的,原平均寿命为1吨多(最高2吨多,最低0.2吨)。现采用液体渗硼及复合强化钴相,可大幅度提高硬质合金表面硬度和耐磨性,硬度由HV1240提高到
Cold-drawing steel wire for building rebar is made of YG_6 and YG_8 cemented carbide with an average life expectancy of 1 ton (up to 2 tons and a minimum of 0.2 tons). Adopting liquid boronizing and compound strengthening cobalt phase can greatly improve the surface hardness and wear resistance of the hard alloy, the hardness is increased from HV1240 to