长冲程整体渗硼筒抽油泵的开发研究

Development of long-stroke oil extraction pump with boronized tube

长冲程整体渗硼筒抽油泵的开发研究王大庸，张仲磷，张学成，姚乃涛，苑敬业（大连理工大学材料工程系１１６０２４）（辽河油田兴隆台采油厂１２４０１１）关键词：渗硼；耐磨性／长冲程整体渗硼筒抽油泵分类号：ＴＥ９３３．３当前，国内通常使用的“镀铬和碳氮共渗泵筒...

A patent method,low temperature pack boronization enhanced by pressure andabsorbing matter,is utilized for surface hardening of a tube of the oil extraction pump onstudying basis of its technical problem , and the processing by this method is investigated. Theresults show that the boronized tube with the suitable core diameter,the circularitv, and surfaceroughness are obtained within the tolerance,while a measurement of the tolerance clearance aftermachine finishing is satisfactory by means of a clearance plunger of lst and 2nd class. In theexaminations of testing ground no pump failed.Their wear resistance is 3-4 times better thanthat of hard Cr plating and carbonitriding.