Cu_(54-56)Zn_(40-44)再生铜合金棒材成形工艺及性能研究  

Forming Process and Properties of Cu_(54-56)Zn_(40-44) Regenerated Copper Alloy Rods

作　　者：王法超 胡丹丹 沈守稳 黄腾 刘伟 王潇 WANG Fachao;HU Dandan;SHEN Shouwen;HUANG Teng;LIU Wei;WANG Xiao(Shanxi North Copper New Material Technology Co.,Ltd.,Shanxi Yuncheng 044000,China;Ningbo Changzhen Copper Co.,Ltd.,Zhejiang Ningbo 315000,China)

机构地区：[1]山西北铜新材料科技有限公司,山西运城044000 [2]宁波长振铜业有限公司,浙江宁波315000

出　　处：《精密成形工程》2024年第9期102-111,共10页Journal of Netshape Forming Engineering

摘　　要：目的促进多杂质元素的废杂铜低成本高效回收,实现二次资源的绿色循环利用。方法基于现有废杂铜直接利用法生产再生黄铜合金棒材,通过废杂铜原料→依成分配料→熔铸合金化→挤压成形→无心车床处理→去应力退火工艺路线,得到了稳定合格的低铜精密棒材成品。结果废杂铜原料的搭配使用是控制杂质元素含量超标的关键环节,需要结合经验值进行合理配方。熔炼工序,在助熔剂、清渣剂、精炼剂和覆盖剂等的作用下,皆可有效减少熔体中的杂质元素,制备出高品质水平连铸铸锭;加工工序,在微量元素的有益范围内,生产的精密再生黄铜棒材抗拉强度≥560 MPa,延伸率≥22%。结论在制备低铜精密再生黄铜合金棒材过程中,开发了一条生产稳定低铜再生黄铜合金产品的工艺路线,实现了废杂铜原料高品质再生。The work aims to promote the low-cost and efficient recovery of scrap copper with multiple impurity elements to realize the green recycling of secondary resources.Based on the direct utilization of scrap copper for producing regenerated brass alloy rods,the stable and qualified low-copper precision rod was obtained through the process route of scrap copper materials→composition of the ingredients→melting and casting alloying→extrusion molding→centerless lathe treatment→stress relief annealing process.The use of scrap copper was the key to prevent the impurity element content from exceeding the standard,and the reasonable formulation should be conducted combined with the empirical value.In the smelting process,with the action of fluxing agent,cleaning agent,refining agent and covering agent,the impurity elements could be reduced effectively and the high-quality horizontal continuous casting ingots could be prepared.For processing,within the beneficial range of trace elements,the tensile strength of precision regenerated brass rods produced was≥560 MPa and the elongation was≥22%.To prepare low-copper precision regenerated brass alloy rods,a process route has been developed to produce stable low-copper regenerated brass alloy products,realizing high-quality recycling of scrap copper materials.

关 键 词：废杂铜 ZnS颗粒 合金化 热挤压 去应力退火 高效再生 

分 类 号：TF805.2[冶金工程—有色金属冶金]