摘要
针对锰系磷化成渣多、磷化层色度不均匀、磷化层表面容易出现发白挂灰、表面泛黄等问题,结合多年锰系磷化生产实践及影响因素研究,分析认为磷化温度、磷化时间、磷化酸比、Fe^(2+)浓度是影响锰系磷化质量的关键因素。指出油套管接箍最佳的锰系磷化工艺参数为:磷化温度≥95℃,总酸点60,不同钢级采用不同酸比(低钢级酸比7~8为佳,高钢级酸比9以上较好),磷化时间大于20 min。得到的磷化膜分布均匀、结晶细致、厚度均匀,具有良好的耐腐蚀性、耐磨性和抗黏结性。
Addressing the problems concerning the mangane：se series phosphorisation process such as excessive slag formation, uneven color of the phosphorised layer, and the, while, gray-striped or yellow phosphorised layer surface, etc., based on the company＇s years experience in manganese series phosphorisation operation, factors affecting phosphorisation quality are studied and analyzed. As a result, it is identified that the key factors include temperature, time, phosphoric acid proportion, and Fe2＋ concentration for phosphorisation operation. It is affirmed that the best parameters of manganese series phosphorisation process for oil tubing/casing couples are temperature： ≥95℃, total acid point： 60, acid proportion： variable as per steel grade （for low grades, 7-8 is the best, and for high grades, over 9 is acceptable） , and time： over 20 min. Based on these parameters, the phosphorized film will possesses advantages such as homogeneous distribution, fine crystallization, even thickness, excellent resistances against corrosion, wearing and bonding.
出处
《钢管》
CAS
2014年第6期79-82,共4页
Steel Pipe
关键词
油套管接箍
高温锰磷化
磷化膜
酸比
耐腐蚀性
耐磨性
抗黏结性
oil tubing/casing couplings
high temperature manganese phosphorisation
phosphorised film
acid proportion
corrosion-resistance
wear-resistance
bonding-resistance
