烘干温度对线切割钼丝冷拔用石墨乳使用性能的影响  

Effect of Drying Temperature on the Performance of Graphite Emulsion for Cold Drawing of Wire-Cut Molybdenum Wire

作　　者：蔡协勇 CAI Xieyong(Xiamen Honglu Tungesten-Molybdenum Co.,Ltd.,Xiamen 361021,Fujian,China)

机构地区：[1]厦门虹鹭钨钼工业有限公司,福建厦门361021

出　　处：《中国钼业》2024年第2期52-56,共5页China Molybdenum Industry

摘　　要：为研究不同烘干温度下所制备的钼丝表面石墨乳烘干涂层厚度、碳氧含量变化及其对钼丝冷拔加工的润滑效果(模产、钼丝表面)影响,本文按3个插值点烘干温度(600、700、800℃)进行钼丝在线热拉压延后单独涂覆石墨乳烘干以获得相应的石墨乳涂层,并继续后面冷拔加工对比测试。结果表明:不同烘干温度会导致石墨乳涂层的厚度及碳、氧含量变化,从而影响石墨润滑性能,进而影响后续钼丝冷拔加工的润滑效果。相比较3个烘干温度点中,烘干温度在700℃时,石墨乳涂层厚度最大且碳、氧含量比例适中,此时的石墨润滑性能大增,因此,该温度点下制备的石墨乳涂层在后续钼丝冷拔加工中体现出较好润滑效果,其模产水平高、成品丝材表面质量好。通过本次研究,可以为线切割钼丝冷拔加工的润滑效果优化提供参考。This study investigates the influence of different drying temperatures on the thickness,carbon and oxygen content variations of graphite emulsion coatings prepared on molybdenum wire surfaces and their impact on the lubrication effectiveness(die wear level and molybdenum wire surface quality)during cold drawing processes.The research methodology involved employing three interpolated drying temperatures(600,700,800℃)for hot extrusion of molybdenum wire,followed by individual application of graphite emulsion drying to obtain the respective graphite emulsion coatings.Subsequent comparative testing was performed after cold drawing operations.Experimental results reveal that varying drying temperatures lead to changes in the thickness of the graphite emulsion coating and its carbon-oxygen content,consequently influencing the lubrication performance of the graphite and subsequently affecting the lubrication effect during the subsequent cold drawing of molybdenum wire.Among the three drying temperature points,at 700℃,the graphite emulsion coating exhibited maximum thickness,with a proportionate and moderate carbon-oxygen content ratio,significantly enhancing the lubrication performance of the graphite.Therefore,the conclusion drawn is that at a drying temperature of 700℃,the prepared graphite emulsion coating demonstrates improved lubrication effects during subsequent cold drawing of molybdenum wire,resulting in lower die wear levels and better surface quality of the finished wire material.This research provides valuable insights for optimizing the lubrication effects in the cold drawing process of molybdenum wire for wire cutting applications.

关 键 词：烘干温度 线切割钼丝 冷拔加工 石墨乳性能 

分 类 号：TG356.16[金属学及工艺—金属压力加工]