DTH drill is widely used dth button bits in all kinds of rock drilling, in the face of different rock ore, we should take different measures to solve it. Hard rock is the easiest damaged drill equipment, this kind of rock during mining should pay attention to what content. Rigid compact weak abrasive formations, say again "skid" formation. Slipping formation comparing with the general formation has a different time:
1, large rock hardness, high silica content. This kind of formation rock pressure into the hardness is up to 5000 MPa commonly, partly between 5500 ~ 6500 MPa, individual and even up to 7000 MPa.
2, high strength. These dth drill bits strata rock forming minerals, particle size is 0.01 ~ 0.2 mm more, siliceous cementation, and resultant force between particles is large, compact structure, high overall strength, the uniaxial compressive strength of 150 mpa or higher.
3, abrasive weak. Because of the low drilling time, less dust and rock powder particles, the drill bits wear little, king kong stone to the blade.
Improve the drilling efficiency of this kind of formation has been our DTH drill manufacturers concern, produce is suitable for all kinds of hard rock reinforced DTH bit product is our efforts in the direction of the staff. To solve this problem, first of all those who want an attention is the quality problem of the bit. Diamond strength decisive effect to the drilling efficiency, the higher the strength of the diamond, the drilling pressure, the greater the drilling rate is higher. But is not to say that the diamond intensity, the higher the better. Because not only should consider the nature of drilling rock, consider the unit price of diamond problem, must consider economic benefit has made. Bit quality guaranteed, they can better apply to all types of rock drilling. As a cutting tool people use twist drill has a history of more than one hundred years. As a result of the twist drill core part is completely negative cutting Angle, cutting resistance is very overburden drilling systems big, so the auger bit cutting force by 50% to 60% is caused by the core drill bit. Coupled with the factor of steel, so the twist drill may not do much. Processing more deeper hole must be expanded from drill holes to start step by step, until it met the requirement of the bore hole size. Hollow drill bit has expanded the advent of the cutting range of use of relatively small power can deep hole processing large hole, also can do the size of the hollow drill is very big, only used on cutting edge better or the best steel, not only reduces the manufacturing cost, and put on the processing way previously thought impossible to become possible.