Failure Analysis of Boring Drill Rod
2022-11-16
In general, the normal failure mode of the drilling rod of hydraulic heading drilling machine is the serious wear of R32 thread, that is, the grinding or smoothing of the thread crest, and the fatigue fracture due to the serious wear under the condition of more accumulated drilling footage. The way of causing R32 thread wear failure is fretting wear and impact wear,
Common Failure Forms of Boring Drill Rod
2022-10-25
The common failure modes of boring drill rods are respectively wear failure of R32 thread part, fracture of R32 thread root and fracture of the second buckle from R32 thread end face.
Cross taper bit, commonly used taper
2022-10-14
Common diameter 29mm, 30mm, 32mm, 33mm, 34mm, 35mm, 36mm, 38mm, 40mm, 42mm, 45mm.
Classification and main production enterprises of hydraulic rock drilling rigs
2022-10-14
According to its use, it is mainly divided into several types, such as open-pit rock drilling rig, underground excavation rock drilling rig, underground mining rock drilling rig, and anchor rod drilling rig.
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