How to use DTH Hammer Bits?
1) When using the DTH hammer to drill with pipe, it is preferable to follow up the longer casing at once with the DTH Hammer Bits.
2) The first casing should not be placed in an uneven manner, and the verticality of the casing should be kept to a maximum of 2° (the permitted deviation is 3mm/m). To keep the casing from falling off, it should be welded or connected with a left-hand thread.
3) Foam works best for drilling, and the lubricating qualities of the DTH Hammer Bits. can be used to make the casing follow up smoothly.
4) Drilling should only be done at a speed of 18 to 25 rpm; high speed should not be used. The drilling weight should be chosen in accordance with the formation. It is preferable to maintain a constant drilling pace.
What is the reason for the deflection of the drill hole of the DTH Hammer Bits?
1. Drilling deviation: Also known as hole deviation, drilling deviation is the difference between the actual spatial position of the drilling during construction and the design space position.
2. The position of the borehole in subsurface space is determined by its depth, apex angle (or dip angle), and azimuth. Three elements of borehole space form are the names given to these three components.
3. Conditions of hole skew: The thick-diameter drilling tool is skewed in the hole and its axis diverges from the drilling axis, which is the primary cause of hole skew. The major factors that can cause it to tilt are a big hole wall gap that creates the necessary space circumstances, a tilting moment that gives it the necessary tilting strength, and a definite tilting direction.
What is the operation method of the DTH Hammer Bits?
(1) To avoid accidentally connecting the DTH Hammer Bits to the 380V power supply, you must verify that the power supply is consistent with the conventionally rated 220V voltage before using the device.
(2) Please carefully inspect the insulation protection of the body, the auxiliary handle, the depth gauge adjustment, etc., before using the DTH Hammer Bits and see if there are any loose screws.
(3) In accordance with the specifications for the material, the DTH Hammer Bits must be inserted into the drill bit within the permissible range of 6-25MM. Avoid using drills that are too far away.
(4) The wires need to be adequately safeguarded. Dragging the wires across the ground or into oily water is absolutely prohibited to prevent them from being cut or crushed, and to stop the oily water from corroding the wires.
