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球墨铸铁轧辊采用普通砂型冒口补缩所消耗的金属重量约占轧辊毛重的15％。采用铝型膨胀发热剂与绝热套组合的发热保温冒口,可节约冒口金属量约20～50％,经大量生产证明,这种发热保温冒口经济效益显著。
Ductile iron roll with ordinary sand feeder riser consumed by the metal weight of about 15% of gross weight of the roll. Adopting the combination of aluminum expansion heat-generating agent and heat-insulating cover, it can save about 20-50% of riser metal, which is proved by mass production that this heat-generating heat-insulation riser has obvious economic benefits.