What are the effects of incorrect use of drill rods?
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Drill rod is a machine tool that connects the drill bit and the rock drill in the tunnel engineering. The drill rods generally used in mine shaft engineering are hexagonal hollow steel and hollow round steel. The inner diameter of the hexagonal hollow steel is 22mm and 25mm, and the outer diameter of the hollow round steel is 32mm and 38mm. The steel has finished steel drills and forgings. For the steel drill, the finished drill is forged according to the required length and then the drill bit is installed directly. Then install the drill bit to gouge the eye. What are the effects of our usual misuse of drill rods?
When the staff uses the drill rod, if the operation is improper, it is easy to cause problems with the machine, such as: damage, mushroom roll, bending, fracture, etc., which affect the work efficiency, then encounter these problems, which will also make the use of the drill tool Longevity becomes lower, so what should we usually do?
1. Make the drill rod fit well with the drill bit (the taper is the same); if the taper of the drill rod is smaller than the taper of the drill head, the tip is easy to break.
2. For drilling holes with a depth of more than 2 meters, it is recommended to use a sleeve drill. First, use a short drill rod to make the hole, and then use the long drill rod to continue to drill, so as to prevent the drill rod from bending, so as to ensure the service life of the drill rod. Become longer.
3. To make shallow holes (less than 2.5 meters), the Gaea drill manufacturer recommends the use of ordinary drills or excellent drills (G brand or GI brand). For drilling deep holes (greater than 2.5 meters), it is recommended to use premium drills or export drills (GII brand or GIII brand, etc.).
4. The hole should be stable, and the air volume should be lowered appropriately. Do not let the drill rod bend to work, otherwise the service life of the drill rod will be shortened.
5. When the drill rod is withdrawn, the impact should be stopped to prevent the drill rod from being damaged by the empty driving (the drill rod is very damaged by the empty driving), so as to prolong the service life of the drill rod.
