Ultrasonic inspection of drill collars wave form gate

钻铤的 超声波探伤

But the traditional ultrasonic machining method only can be used to drill hole and copy machining . It can 't satisfy the need of modern machining because the structure of work is very complex and it need multi-axis harmonious motion to machine some complex surface .

但传统的 超声加工只能进行一维加工，主要用于 打孔和拷贝加工，已经不能满足现代生产的要求，因为现代生产中零件的结构越来越复杂，一些复杂曲面的成形往往需要几个运动精密的配合。

The rotary ultrasonic machining is a new ultrasonic machining ( USM ) method which has been mainly used to drill holes in hard and brittle materials such as ceramics semiconductors and glasses in recent years .

旋转超声波加工是一种新的 超声波复合加工方法。近年来，它主要用于陶瓷、半导体和玻璃等硬脆材料的 孔 加工。

Firstly expatiating the generally method of tube detection by ultrasonic and then according to the particularity of the oil drill tube joins we give out different methods to solve the problems .

第一部分首先阐述了 超声波管材探伤的一般方法，然后结合石油 钻杆接头的特殊性，逐步提出解决其 探伤问题的特殊方法。

For group B used the turbine drill ( control group ) for the left side and the ultrasonic osteotome with the turbine drill ( experimental group ) for the right side .

B组左侧先用涡轮钻（对照组）拔除，右侧则用 超声骨刀配合涡轮 钻（实验组）拔除。

Ultrasonic Detection of the Fatigue Cracks at the Thread Root of a Drill Pipe

钻杆接头螺纹部位疲劳裂纹的 超声波检测

After the surgery using the ultrasonic osteotome with the turbine drill the duration of remission of the symptoms of pain and local swelling was significantly better than the control group ( p0.05 ) . 3 .

在 超声骨刀配合涡轮 钻法拔除下颌低位水平阻生智齿手术后，疼痛及局部肿胀症状的延续和缓解时间方面明显优于对照组（p0.05）。

Research on Ultrasonic Test Method for Steel Pipe with Heavy Thickness Used in Drill Collar

钻铤用厚壁钢管 超声波探伤方法研究

Ultrasonic detection of corrosions in the internal walls of oil drill rods

石油 钻杆内壁体积型腐蚀缺陷的 超声检测

Ultrasonic testing of the thread in non-magnetic drill string

无磁 钻具螺纹的 超声波检测

Ultrasonic inspection and evaluation of the inside upset of drill rod and relative apparatus

石油 钻杆内加厚区 超声检测评价方法和装置

Using ultrasonic osteotome with a turbo drill for removal of mandibular impacted wisdom teeth can play their respective advantages reduce postoperative complications more effectively to achieve minimally invasive procedure .

但 超声骨刀配合涡轮 钻拔除下颌阻生智齿可以发挥各自优点，更好地降低术后并发症达到微创操作的目的。

Ultrasonic detection of corrosions in the internal walls of oil drill rods is described including the principle method and technology .

介绍石油 钻杆内壁腐蚀缺陷 超声检测的原理、方法及工艺，给出了实验结果。

Monitoring the trial ; ULTRASONIC INSPECTION OF DRILL COLLARS

试验的监查； 钻铤的 超声波探伤

But the traditional ultrasonic machining method only can be used to drill hole and copy machining so the main purpose of this thesis is that how to realize the 2-D & 3-D ultrasonic machining .

但传统的 超声加工属工具拷贝式加工，一般用于硬脆材料上 孔的加工，而如何实现二维、三维的数控展成超声波加工是本课题的主要内容。

ULTRASONIC INSPECTION OF DRILL COLLARS Surface Acoustic Wave Motor

钻铤的 超声波探伤声表面波马达

Ultrasonic inspection of the drill set for petroleum and natural gas industry

石油天然气 钻具 的 超声波检测