Drill life criteria of VB_C, VB_(C1), VB_(C2), VB_b, VB_(R) and ω_ψ were evaluated overall from the aspects of reliability, sensitivity, stability, difficulty of meansuring and convenience of selecting dulled criteria for the first time.
Based on the formation of weak interface of Al2O3 and LaPO4 phase, machinable 40wt%Al2O3/LaPO4 composite having a hardness of 6.3±0.45GPa, was fabricated and characterized by using cemented carbide drill.
A 7-pore AO reconstituted titanium steel board was placed in the extra-lateral of tibia,and all pores except the 4th pore were drilled with a 2.5-mm drill bit,and then fixed with titanium screw after being tightened with 3.5-mm taps.
The samples of the fluid inclusions collected from the BGX-15 well drill cores are hosted in quartz of diorite-porphyrite.
Avetisyan, "Choice of type of drill solution for drilling in unstable rocks," published in: Review Information.
Ways to improve the existing process for iodine and bromine production from iodine-containing drill waters were studied.
Quality Control of Cores Made of Nanocrystalline Alloys Intended for Primary Transducers of a Drill-Hole Magnetometer-Inclinomet
The influence of different types of thermal magnetic treatment of ferroprobe cores made of the Fe73.5Cu1Nb3Si13.5B9 nanocrystalline alloy on the characteristics of primary transducers of a drill-hole magnetometer has been studied.