k9球墨铸铁管 k8球墨铸铁管 k7球墨铸铁管 球墨铸铁管厂家 球墨铸铁管厂 球墨管厂家 k9球墨管 k8球墨管 k7球墨管 球墨铸铁管管件1、 Optimize process parameters and reduce tube weight
Reasonably control the pouring temperature and the inlet and outlet temperatures of the cooling water of the fuselage to shorten the interval between two pouring. The inlet temperature of the cooling water of the control fuselage is 28-36 ℃, and the outlet temperature is 50-57 ℃.
2、 Control the addition of raw materials to reduce slag inclusion defectsk9球墨铸铁管生产加工为解决降低铁液中的含硫量，削减硫化物的发生，应操控W(S)<0.02%;适当进步浇铸温度，有利于夹渣上浮;球化剂中稀土含量不易过高，稀土含量操控在1-2%为宜;加强铁液的扒渣和挡渣作用;铁液中的残镁流量不易过高(操控在0.035-0.045%)，以削减铁液外表氧化。