Diamond composite bit has been recognized by large and medium-sized coal mines in the country. With the product updating and iteration, the use and performance of the product have been better improved. However, some appropriate and correct methods are needed in operation to bring the product performance into full play.
1. Structure
(1) Diamond bits are classified by cutting grinding materials. There are many kinds of cutting grinding materials used for diamond bits for drilling, including artificial diamond bits, natural diamond bits, diamond polycrystalline bits, diamond composite bits, single crystal and polycrystalline composite bits, insert diamond bits and other new materials bits.
(2) Diamond bits can be classified into diamond-impregnated bits, diamond-impregnated bits and diamond-impregnated bits, diamond-impregnated bits and diamond-impregnated bits, and diamond-impregnated bits and diamond-impregnated bits according to the Mosaic mode of cutting and grinding materials (the Mosaic mode refers to the distribution form of diamonds on the surface or inside the drill head body).
2. Classification by use
(1) Composite bit for geological exploration.
Mainly used for geological exploration of composite bit, suitable for soft to medium hard rock, now some manufacturers newly developed new composite bit can be applied to 10 hardness rock.
(2) Coal field drilling using composite bit.
It is mainly used for coal seam drilling and mining. Generally speaking, the rock layer of coal field is relatively soft, and composite bit is widely used, such as bolt bit, three-wing bit, etc.
(3) compound bit for petroleum exploration
It is mainly used in oil and gas field drilling using drill bit. At present, the oilfield composite bit is the most expensive and demanding of all composite bit. It's the King of the composite bit.
3.The use of diamond composite bit
(1) There should be no air leakage in the main air path of the compressor during operation, and sufficient air volume and pressure should be ensured to prolong the service time of the diamond composite bit;
(2) It is strictly prohibited to change the running direction abruptly in reverse to prevent the diamond composite bit from falling off;
(3) The diamond composite bit should be run in for half an hour at a low speed before use, and then gradually used normally;
(4) During normal drilling operations, when replacing the diamond composite bit in the middle, it is necessary to strictly check whether there is debris in the hole.
(5) It is necessary to ensure that the hole is clean before using the new diamond composite bit;
(6) When operating in harsh geological environment, axial pressure and rotational speed should be reduced to prevent the fracture of diamond composite bit;
(7) In order to make the diamond composite bit work normally and stably, the rod stabilizer should be replaced regularly.
