我国线材轧机线速度低,轧辊多采用冷硬铸铁轧辊,使用寿命很短。国际上高速轧制一直是线材轧机的主要发展方向,实现高速轧制的关键是提高轧辊的耐磨性和使用寿命,若采用烧结碳化钨轧辊其使用寿命将是铸铁轧辊的10倍左右,常规线速度可达50～70m/s,甚至提高到80～120m/s。烧结碳 China’s wire rod mill line speed is low, the use of chilled roll cast iron roll, the service life is very short. International high-speed rolling has been the main development direction of wire rod mill, the key to achieving high-speed rolling is to improve the wear resistance of the roll and life, if the use of sintered tungsten carbide roll life will be about 10 times the cast iron roll, conventional Line speed up to 50 ~ 70m / s, and even increased to 80 ~ 120m / s. Sintered carbon