Mining Down-the-hole Drill Bit
When drilling down 50 meters into hard granite rock, drilling workers never want to hear sudden breaking sounds from the drilled hole; damaged drill rods or fallen hard alloy teeth on drill bits will waste plenty of working hours, and workers also need to spend time retrieving broken parts from underground holes, drilling equipment therefore has to bear continuous impact from 25-bar air pressure, and it must stay stable without any damage in the whole drilling process.
Manufacturers mainly concentrate on two core key components for drilling work, one is the mining down-the-hole drill bit assembly which can smoothly cut through hard rock; the other is the drill rod that can keep straight shape and keep thread structure intact under strong rotational force.
Bits That Take the Heat
If people have used low-quality drill bits before, they can clearly find that the hard alloy teeth on the bit are the earliest to wear out and get damaged.
They stay in place: Drill bit alloy teeth will not only be fixed by adhesion or common welding methods, manufacturers adopt tight pressing installation way, to insert tungsten carbide parts firmly into the drill bit head; these parts are designed to gradually wear out with long-term use, instead of falling off suddenly while drilling into hard quartz rock layers.
Clears the dust fast: Deep and spacious air grooves are arranged on the front surface of mining down-the-hole drill bits, rock debris will be repeatedly crushed into fine powder and cause extra fuel consumption, if these waste materials cannot be blown out from the hole in a timely manner; this structural layout can effectively maintain a clean state at the bottom of drilled holes all the time.
Thick steel where it counts: The outer edge part of the drill bit has been thickened and reinforced, this section keeps rubbing against surrounding rock during drilling work, so its wall thickness is made strong enough to wear slower than the alloy parts on the bit.
Pipes That Stay Straight
Drill rods can be regarded as a long connecting rod for drilling work, any slight bending of the rod body will make the drilling machine produce.
Solid welds: Friction welding technology is adopted to connect joint parts with drill rod bodies, this processing method differs from ordinary surfacing welding, it can fully combine two steel parts into an integrated whole; the welded position will turn into the sturdiest section of the drill rod, rather than its fragile weak point.
Threads that don't seize: Standard API thread structures are adopted and precisely processed on these drill rods, the threaded parts can be manually assembled smoothly, and workers do not need large professional wrenches to separate them after finishing drilling operations.
Field FAQ: What Driller Managers Actually Ask
Q: Why should I pay more for a "High-Pressure" bit?
When an air compressor works above 18 bar of pressure, ordinary drill bits are prone to head cracking after just a few hours of operation; the metal material of this high-pressure mining drill bit has undergone special processing, it can withstand extra impact force and avoid brittle fracture, this performance gap directly decides whether drilling work can be completed smoothly or whether drilling tools will be damaged and discarded.
Q: Will these pipes fit my Kaishan or Zaojing rig?
As long as drilling equipment adopts common API regular thread specifications such as 2 3/8 inch and 3 1/2 inch, these drill rods can be directly installed and connected; most large domestic drilling machines all comply with such international standard sizes, so users can freely match and assemble different drilling accessories without any compatibility problems.
Q: How do I choose the right bit face (Concave vs. Convex)?
Concave (dented in): Best for most rocks. It helps keep the hole straight.
Convex (bulged out): This style of drill bit is suitable for soft to medium hard rock formations, it can also help raise the overall drilling speed in actual construction work.
Flat Face: This type of drill bit fits extremely hard and gritty rock layers, it can also effectively prevent the drill bit head from developing cracks during drilling operations.
Q: Do the pipes wear out on the outside?
Such wear will occur and inevitably, fine dusts rising from the hole in sandy and gritty rock layers will constantly and rubbing against the drill rod surface just like sandpaper; these drill rods are made with thicker pipe walls than ordinary low-cost products, they can support longer drilling distances before the pipe wall becomes too thin to keep working normally.
Q: Why is the paint on the tools sometimes scratched?
Thread matching and 's handling of the drill tools are all done in industrial factory settings, these products do not pursue delicate appearance for display placement; manufacturers put all of the production cost into the steel material grade and heat treatment process, instead of spending money on surface painting decoration, when the drill tools are in underground positions 20 meters deep, only the hardness of alloy parts can adapt the rock stratum demands.
Who is this for?
Quarr owners who are tired of bits failing after only a few shifts.
Blasting crews who need consistent hole diameters for their explosives.
Water well drillers who need drill rods that can be repeatedly connected and disassembled hundreds of times, and the threaded parts will not suffer wear and slipping damage in the process.
A quick heads-up: These drill rods adopt heavy alloy steel as raw material, they cannot be easily carried and moved by manual force alone; the hoist device on drilling equipment needs to be prepared in advance for use, yet such self-weight of the rods can keep the drill bit running steadily, and also make the drilled holes maintain a straight state all the time.
If you want to get a quotation for a complete set of drill bits and drill pipes, you only need to provide the working pressure of your air compressor and the type of rock stratum being drilled; we will then arrange the corresponding product parameters and send them over in time.
Hot Tags: mining down-the-hole drill bit, China mining down-the-hole drill bit manufacturers
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