ZA27 alloy shows good mechanical properties and working properties. Small coefficient of friction and large stickingforce to oil can substitute ZA27 alloy for Bronze alloy.
It is important to note that the stickingforce is a product of the differential pressure between the wellbore and the reservoir and the area that the differential pressure is acting upon.
注意到以下这一点很重要：即卡钻力是井内流体压力与地层压力之差与此压差所作用的面积的乘积。
3
The response characteristics of wrist force sensor determined the sticking of sensor's strain gauge and sensor's orientation method and also affected the dynamic characteristics of robot system.