Drilling hard alloys based on high-temperature tungsten carbides

作者：Zakharov D A^*; Amosov A P; Sal'nikov A V; Sal'nikov M A

来源：Russian Journal of Non-Ferrous Metals, 2015, 56(3): 319-324.

DOI：10.3103/S1067821215030220

• drilling bits
• cobalt binder
• carbon balance
• magnetic saturation
• high-temperature tungsten carbides
• impact cyclic resistance
• high-pressure sintering
• microstructure

The influence of strength properties of a cobalt binder and tungsten carbide grains on the operational characteristics of hard-alloy picks of drilling bits is investigated. Results are used to develop new brands of hard alloys based on high-temperature tungsten carbides such as VK6S, VK10S, VK15S, and VK15K. It is established that the application of these alloys in the pick production gives the opportunity to increase the penetration speed due to the use of picks with a more aggressive design. It is shown that new alloy brands also make it possible to increase the resource of the instrumental accessories made of them.

• 出版日期2015-5