1, with good assurance and taper drill rod (taper is consistent, drill rod inserted into the drill bit cone hole depth must be greater than 25 mm, head should not be in full bit and drill rod) at the bottom of the bore, otherwise mining dth bit easy to produce drill bit lost; Note: use the drill bit for the same products with the best use of conical drill rod manufacturers, to ensure its taper is consistent and have good cooperation.
2, when opening DHD bit should lower air volume, reduce the carbide piece of local stress caused by the high to the injury of the drill bit, when the drill bit completely chiseled into the rock and then use a normal air volume;
3, when the drill bit edge platform width of 3 mm or more, should be replaced in a timely manner or grinding, so as not to reduce the drilling speed, causing pieces of drill bit, lobes, reduce service life; When there was a back taper drill bit, should change in time or grinding drill bit, otherwise will seriously drill bit wear and tear, and reduce the drilling speed, even stuck drill; 4, use foreign body, such as the drill bit if meet steel bar, should adjust the punching position to prevent the drill bit is destroyed;
5, when drilling easy card brazing occurs, it should be one word bit change for cross bit or the ball tooth drill head;
6, to cause a type drill bit wear serious, slow drilling footage, pieces of rock, should consider to replace other alloy bit or use cross drill head, the ball tooth drill head, and timely written notice to the company, in order to handle dth rock bit in time. Inform the content mainly includes: 1), the use of DHD bit model, air pressure, air volume; 2), rock type and hardness, the construction site (in the open air, underground and other), drilling construction way (downward, horizontal and hybrid, other); 3), damage the drill bit type, quantity, life, damage forms; 4), average normal drill bit life; 5), the service life of the plan; 6), other manufacturers an average service life. 7), my company product model. 7, when rock is soft, easy to drill, use whole soldering (drill bit directly on the drill rod production) can greatly improve the drilling speed. 8, for vertical drilling, using integral drill can avoid the loss of the drill bit, must ensure the normal order of the row of powder at the same time, otherwise, the drill bit to serious wear and tear; 9 and drill bit should try to ensure water supply in the process of drilling, in order to prevent the card pin, prolonging the service life of drill bit and drilling efficiency; 10, our company can provide the same specification, different type, type alloy plate type drill bit.
In the mechanical drilling, the dhd drill bit operator is often monitor two or three DHD bit. DHD bit slide is installed on the propeller or arm. Or sliding arm carry on mechanized drilling equipment is called jumbo. Main jumbo manufacturers in the world is: SANDVIK, SECOMA, ATLAS COPCO, FURUKAWA, GARDNER - DEVER, etc. In China's mining, quarrying and mining field, hydraulic jumbo has been widely accepted and applied. A word bit instructions using a type drill bit is a widely used drilling bit, its connection form mainly tapered connection, it (commonly known as the finished soldering) and conical drill rod. In order to correctly use the word bit, ensure the normal service life, must pay attention to the following: