摘要
为适应DT4工业纯铁管材使用过程中要求高的耐蚀性,对经氩弧焊焊接、冷轧成形并多次退火的DT4管材表面进行化学镀镍磷处理,并通过对镀层再次冷轧变形以改善镀层性能。结果表明,退火处理减少了DT4管材的焊接缺陷和残余应力,为化学镀Ni-P合金提供良好的基体;镀层经冷轧变形后孔隙率降低,改善了与基体的结合力,提高了耐蚀性。
DT4 pure iron pipe was prepared by argon arc welding and cold rolling,and then annealing for several times.To achieve high corrosion resistance for DT4 pure iron pipe in service,electroless nickel phosphorous plating was performed on the surface,and cold rolling was carried out once more to improve the properties of the Ni-P coatings.The results indicat that annealing process reduces the weld defects and residual stress of DT4 pipes,and provides favorable substrate for the electroless plating.The additional cold rolling decreases the porosity of the coating and increases the adhesion of the coatings to the substrate plane,and hence improves the corrosion resistance.
出处
《金属热处理》
CAS
CSCD
北大核心
2011年第3期32-36,共5页
Heat Treatment of Metals
关键词
DT4纯铁管材
焊接
冷轧
高温退火
化学镀Ni-P涂层
结合力
耐蚀性
DT4 pure iron pipes
welding
cold rolling
high temperature annealing
electroless deposition Ni-P coatings
adhesion
corrosion resistance
作者简介
归艳华（1986-），女，河北沧州人，硕士研究生，主要进行材料表面防护研究。E—mail：renranfanguo@163．com。
通讯作者：范洪远，联系电话：028-85401193，E-mail：fanhy@scu．edu．cn
