2) box face
钻杆母扣头端面
3) integral tool joint
整体钻杆接头
4) undercutting
['ʌndə'kʌtiŋ]
底切;掏槽;钻杆接头下端面磨蚀
5) tool joint
钻具接头
6) drill rod joint
钻杆接头
1.
Wearing resistance of drill rod joint is an important study in drill machine manufacture for years.
以钻杆接头常用材料40Cr为试验材料,对其经粉末固体渗硼后的耐磨性、耐蚀性进行了研究,结果表明,渗硼后其耐磨性提高7倍以上,耐蚀性也有明显提高。
2.
The three fail form of scoring,fillister and corrosion for 127 mm(5″) S135 drill rod joint,corrosion rate and corrosion production have been researched by means of analysis of chemical composition and microstructure,testing of mechanical property.
通过化学成分分析、力学性能测试、组织结构分析和高温高压模拟试验,对127 mm(5″)S135钻杆接头内壁出现划痕、凹槽和腐蚀三种失效形式,钻杆的腐蚀速率和腐蚀产物进行分析研究。
补充资料：扣头
打折扣时扣除的金额。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条