采用弱氧化性熔炼、复合脱氧和流态粒子保护预埋紫铜管等技术措施，有效地解决了纯铜熔炼过程中吸气、铸件冒口上涨和预埋紫铜管熔穿等技术难题，成功地浇注出２００多吨高传导率纯铜水套类铸件，替代了昂贵的进口件，并出口到国外，经济效益显著 Adopting technical measures such as weak oxidizing smelting, compound deoxidation and pre-buried copper tubes for fluid particle protection, the technical problems such as aspiration, rise of riser of castings and penetration of embedded copper tubes during the pure copper smelting process are effectively solved. Successfully pouring more than 200 tons of high conductivity copper water jacket casting, instead of expensive imported parts, and exported to foreign countries, significant economic benefits