The trenching Bit is one of the most important tools in the mining process. The suitability of the Trenching Bit to the nature of the rock and its quality plays a very important role in the selection of the drilling process.
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A common problem and solution
Please choose the drill bit and work wisely
A common problem and solution
Mud pocketing of wheeled trencher bits may occur during normal drilling up and down, which is a phenomenon where the surface of the bit is covered with mud masses, making it impossible for the bit to perform normal rock breaking. Under the conditions allowed by the equipment, the mud-filled well section should be drilled with high displacement as far as possible to ensure effective flushing of the bottom of the well and the drill bit, and timely rock chips in the wellbore to prevent the formation of a virtual thick mud cake; in soft mudstone strata, low drilling pressure and high rotational speed should be used, requiring the drill rig to operate finely and drill the holes evenly. A series of measures can be taken to prevent the mud pack of the drill bit before the wheeled trencher bit enters: full circulation should be carried out to prevent the residual rock chips in the well from being hydrolyzed and decomposed; the mud cake on the good wall is scraped and squeezed.
When the effect of short-time debonding is not good, use the tooth wheel drill bit to pass through the well first; butter can be applied to the drill bit and the support device in advance to form a protective film on the surface. During the drilling process of the long bare-hole section, it is necessary to carry out midway circulation. Before continuing to drill, the mud cake accumulated on the drill bit should be washed away; when drilling encounters resistance, the pressure cannot be lowered blindly and the pump must be turned on to establish circulation; when drilling to the bottom of the well, the pump should be turned on first to fully clean the drill bit and the bottom of the well with a large displacement. During the drilling process of the long bare-hole section, it is necessary to carry out mid-circulation, and the mud cake accumulated on the drill bit should be flushed away before continuing to drill; when drilling encounters resistance, the pressure cannot be lowered blindly, and the pump must be started to establish circulation; when drilling to the bottom of the well, the pump must be started to circulate first, and the trencher bit and the bottom of the well must be fully cleaned with large displacement.
Please choose the drill bit and work wisely
When the side angle of the cutting teeth of the wheeled trencher bit is larger, it generates lateral thrust to the chips during the drilling process, making them move to the outside of the bit, which is favorable to the discharge of chips and prevents the bit from generating mud pockets. The location, size, shape, and angle of the water hole have a very important influence on the hydraulic cleaning effect of the drill bit, and its design should be favorable to the discharge of chips; in the section where mud pockets occur frequently, a blade wheel type trencher bit should be used and chip discharge should be carried out. Wide groove depth, large overflow, and good hydraulic cleaning effect.
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RUIAN FLY MACHINE PARTS CO.,LTD was established in 2006. After 15 years development, FLYMACHINE has become a professional manufacturer mainly undertaking construction machineryparts that road Milling Bit, Trenching Bit, Forestry and mulcher teeth, Scarifier Blade Tools,Foundation Drilling bit,Mining and Tunneling bit etc are our main products.