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What are the drilling methods of rotary drilling rigs?
A good operator should always know the type and intensity of geology to be drilled at this time, which rotary drilling rig drill pipes and tools, and which drilling methods are effective. Only then can the operation be controlled. Loads are reduced to low, wear is low, and footage is fast.
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Do you know the technological process of rotary drilling rig?
Rotary drilling rig is a kind of construction machinery suitable for hole-forming operations in building foundation projects. It is widely used in municipal construction, highway bridges, high-rise buildings and other foundation construction projects.
What are the requirements for the design of rotary digging teeth?
The design improvement of the rotary digging teeth requires higher coal mining requirements, so the design of the rotary digging teeth is insufficient. If there are defects, the rotary digging teeth cannot play a major role, so the company cannot meet the mining requirements.
A brief introduction to picks
Pick consumption decreases with increasing shearer traction speed and increases linearly with drum speed. The reason is that with the increase of traction speed, the chip thickness of the pick increases, and the path for cutting coal and rock per unit volume becomes shorter, resulting in less pick wear and lower tooth loss.
What is the reason for the cold cracking of the shearer pick?
Picks include shearer picks, roadheader picks and rotary cutter picks. Different types of incisors have different effects. In mining and underground mining, shearer picks play an important role. TBM picks are mainly used in roadway excavation and tunnel excavation.
