还原法低碳钢丝热镀Galfan镀层工艺  

Reduction method of low carbon steel wire hot-dip Galfan plating process

作　　者：苗立贤 

机构地区：[1]马来西亚环球电缆有限公司,马来西亚柔佛州新山市81100

出　　处：《金属制品》2012年第6期20-24,共5页Metal Products

摘　　要：热镀低碳钢Galfan合金镀层钢丝表面易产生缺陷。介绍低碳钢丝还原法热镀Galfan镀层原理。氢气还原氧化铁反应过程中,影响反应速度的主要因素有温度、氧化铁粒度大小、还原时间。氧化铁粒度为2μm时,氧化铁还原反应在350℃时加快,在600℃时还原率达100%。对保护气体还原法生产热镀Galfan合金镀层钢丝工艺进行介绍。钢丝电解脱脂溶液中,ρ(NaOH)为30～35 g/L,ρ(Na2CO3)为20～30 g/L,温度为50～65℃,电流密度为5～15A/dm2;电解酸洗液中,ρ(HCl)为50～100 g/L,ρ(FeCl2)不大于25 g/L,阴极电流密度为5.0～10.0 A/dm2,阳极电流密度为2.0～2.5 A/dm2,温度为室温;退火还原温度为600～780℃,还原时间不小于28 s,冷却段温度为440～455℃;氮气抹拭过程中,压力为0.020～0.025 MPa。解决了普通热镀低碳钢丝Galfan合金镀层表面缺陷。The defects were produced on the surface of hot-dip low carbon steel Galfan alloy plating. The low carbon steel wire reduction method hot-dip Galfan plating principle was introduced. In the process of hydrogen reduction iron oxide, the main factors affecting reaction speed are temperature, iron oxide particle size, reduction time. When iron oxide size is 2 μm, the reduction reaction of iron oxide speeds up at 350 ℃, the reduction rate reaches 100% at 600 ℃, the protective gas reduction method to produce hot-dip Galfan alloy plating process is introduced in detail. In wire electrolytic degreasing solution, p（NaOH） is 30 - 35 g/L,p （Na2CO3 ） is 20 - 30 g/L, temperature is 50 - 65 ℃ , current density is 5 - 15 A/din2. In electrolytic acid pickling solution, p（HC1） is 50 - 100 g/L, p（FeC12） is no more than 25 g/L, cathodic current density is 5.0 -10.0 A/dm2, anodic current density is 2.0 -2.5 A/dm^2 ,temperature adopted is room temperature, annealing reduction temperature is 600 - 780 ℃, reduction time is no less than 28 seeonds, cooling section temperature is 440 - 455 ℃, in the process of nitrogen wipping, pressure is no less than 0.020 - 0. 025 MPa. The surface defects of common hot-dip low carbon steel wire Galfan alloy plating are solved.

关 键 词：还原法 低碳钢丝 热浸镀 Galfan合金镀层 氮气抹拭 

分 类 号：TG174.4[金属学及工艺—金属表面处理]