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Made from premium alloy steel and high quality tungsten carbide.Heat treated and shot peened to deliver a durable and reliable balance of strength and toughness.


by lukekay
When loading and unloading underground mining drill pipe, the following items should be observed

1. Before unloading the underground mining drill pipe, make sure that the protection wire is tightened intact.

2. Rough loading and unloading should be avoided, because it is possible to throw the underground mining drill pipe out of the pit.

3. Don't drop the drill pipe or let the end of the drill pipe collide when unloading the underground mining drill pipe, because even if there is a protective wire, the screw thread may be damaged.

4. The unloaded underground mining drill pipes must be neatly stacked together.

The following regulations shall be observed when storing underground mining drill pipe

1. It is not allowed to stack the underground mining drill pipe directly on the ground, rail, steel plate or concrete surface. The first layer of drill pipe must be more than 30 cm above the ground to prevent moisture and soil corrosion.

2. The underground mining drill pipe should be stored on the pipe support, and the pipe support should have enough support piers to prevent the drill pipe from bending and damaging the thread. The pier should be on the same plane and horizontal, and the pier foot should be solid to prevent sinking.

3. There should be isolation pad between drill pipes in each layer of underground mining, so that the drill pipe joint should not bear the weight of drill pipe. Each layer of drill pipe shall have at least three isolation skids.

4. The isolation skid shall be at right angles to the underground mining drill pipe and directly above the lower skid to ensure that the drill pipe will not bend.

5. The length difference of drill pipe in each layer of underground mining should not exceed the length of joint or coupling.

6. Both sides of the drill pipe in each layer of underground mining should be clamped with 2.5 × 5.0 cm or 5.0 × 5.0 cm plug blocks at both ends of the skid.

7. The drill pipe water hole and male and female thread must be cleaned with clean water, coated with antirust oil, and wear wire protector.

8. During storage, the rubber hoop on the underground mining drill pipe should be removed, otherwise it will cause annular corrosion groove on the drill pipe body.

9. In order to inhibit the corrosion of underground mining drill pipe, during the storage period, the drill pipe should be visually inspected regularly, and the surface and inner wall of the drill pipe should be anticorrosive.

The bent underground mining drill pipe must be straightened before it can be used rock drill bits

After straightening, the shaft axis of underground mining drill pipe should coincide with the joint thread center line. At present, there are three methods to straighten the underground mining drill pipe, namely, pressure straightening, tension straightening and rotary straightening. All these straightening methods need to produce plastic deformation of drill pipe. The straightened underground mining drill pipe is easier to be bent than before.

# by lukekay | 2021-06-28 12:36 | drill bits

Low wind pressure down-the-hole drill bit Raw materials:

Adopt high wear resistance Carbide Button And high toughness alloy steel trouser body.

Low wind pressure down-the-hole drill Head advantage:

1.The drill bit has high-speed rock impact, the rock drilling speed is fast, and the rock breaking efficiency is high.

2.The drill bit has high wear resistance and can hit more meters.

3.The high-efficiency drill bit can be optimized and customized according to the rock structure.

Low wind pressure Down-the-hole drill bit Characteristic parameters:

1. The hard alloy tooth material adopts high wear-resistant formula, and the tooth breaking rate is less than 1%.

2. The body of trousers is made of high-strength high-quality alloy steel, and through advanced heat treatment technology, the trouser break rate is less than 0.5%.

3. Using advanced CNC machining and advanced alloy tooth assembly technology, the tooth loss rate is less than 0.5%.



# by lukekay | 2021-04-07 12:40

Cemented carbide

Features of down-the-hole drill bits:Fast drilling speed!High efficiency, low labor intensity of workers!

Down-the-hole drill bit type:The products are divided into two series of down-the-hole drill bits, low-pressure down-the-hole drill bits and high-pressure down-the-hole drill bits..

The purpose of down-the-hole drills:Widely used in earthwork engineering, mining, water well drilling, construction engineering, water well drilling, side pillar support, etc..

The down-the-hole drill bit is a kind of drill bit that is used with the down-the-hole impactor, which is used for drilling operations through the spline and the impactor..

The down-the-hole drill bit is used in conjunction with the down-the-hole impactor, which has the characteristics of straight drilling, fast speed, and deep hole drilling.

Cemented Carbide Mining Drill Product Details:


Long service life of drill bit: strength 2800N, hardness (HRA) 92
High drilling quality, fast drilling speed, no need for grinding, high work efficiency
Spline connection, wind pressure is 0.5-0.7Mpa, using 90-type impactor.

Carbide tooth profile selection

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Button:

Mainly used as side teeth of down-the-hole drill bits, suitable for abrasive and very hard rocks.

Parabolic tooth:

Mainly used as side teeth and middle teeth of down-the-hole drill bits, suitable for medium abrasive and relatively hard rock.

Bullet teeth:

Mainly used as the middle teeth of down-the-hole drills, suitable for rocks with medium abrasiveness and medium hardness.Edge teeth can also be used when the rock is relatively soft.

Sharp teeth:

Mainly used as the middle teeth of down-the-hole drill bits, suitable for soft rock formations with high drilling speed and low tooth breaking rate.



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# by lukekay | 2021-03-31 17:18
For proper useDown-the-hole drill bitTo ensure the rock drilling speed and service life of the drill bit, the following points must be paid attention to:

1. According to the rock condition (hardness, abrasiveness) and drilling rig type (high wind pressure, low wind pressure) to choose the down-the-hole drill bit.Different forms of alloy teeth and tooth arrangement methods are suitable for drilling different rocks.Choosing the right down-the-hole drill bit is the prerequisite for obtaining the best use effect;
2. When installing a down-the-hole drill bit, place the bit gently into the down-the-hole impactor clamp sleeve, and don't bump it hard, so as not to damage the tail shank of the drill bit or the clamp sleeve;
3. In the process of rock drilling, it is necessary to ensure that the air pressure of the down-the-hole drill is sufficient.If the impactor works intermittently or the blast hole powder is not discharged smoothly, check the compressed air system of the down-the-hole drill to ensure that there is no slag in the hole during the drilling process;
4. If a metal object is found to fall into the hole, it should be sucked out with a magnet or taken out by other methods in time to avoid damage to the drill bit;
5. Pay attention to the size of the drilled blast hole when replacing the drill bit.If the diameter of the drill bit is excessively worn, but the blast hole is not well drilled, do not replace the drill bit to avoid sticking..Used old drill bits with roughly the same wear diameter can be used to complete the work;
6. Please notify me in time for down-the-hole drills that have been abnormally scrapped in the early stage For the company, the notice mainly includes:
1) Type of rock and construction site;
2) The model of the impactor used as a set;
3). The failure mode of the drill bit (tooth broken, tooth loss, chipping of the drill head, fracture of the drill shank, etc.);
4) The service life of the drill bit (the number of feet and meters drilled);
5) Number of failed drill bits;
6). The drill bit footage in meters during normal use (the drill bit of our company and other manufacturers on site).

# by lukekay | 2021-03-25 11:37 | drill bits

Down-the-hole drill bit

1. Introduction of down-the-hole drill bits. The products are divided into two series of down-the-hole drilling tools, high air pressure and low air pressure..Use high-quality raw materials and advanced production technology to produce high-quality series of down-the-hole drills.Widely used in earth and stone engineering, mining, water well drilling, construction engineering, etc..

Nowadays, high-pressure down-the-hole drills currently adopt four main end face design forms: convex end face, flat end face, concave end face and deep concave center end face..Cemented carbides mostly use button teeth, spring teeth or the method of tooth distribution shared by both buttons and spring teeth..

1. Convex end face type: This type of drill has two types, single boss and double boss end face. The latter is mainly used for DTH drills with larger diameters..Convex-faced DTH drill bits can maintain a high drilling rate when drilling medium-hard and hard abrasive rocks, but the flatness of the hole is poor, and it is not suitable for drilling rocks with high blast hole flatness requirements. engineering. 2. End face plane type: The drill bit of this shape is more sturdy and durable, suitable for drilling hard and extremely hard rocks, and also suitable for drilling medium hard and soft rocks where the straightness of the blasthole is not required.. 3. End face plane type: There is a conical recessed part on the end face of the drill bit of this shape, which forms a slight nucleation effect during the rock drilling process to maintain the centering performance of the drill bit, and the drilled blasthole has a better straight line. This kind of drill bit has good powder discharge effect and fast drilling speed. It is the most used down-the-hole drill bit on the market.. 4. Deep concave center type on the end face: the drill bit of this shape is evolved from the same type of button bit, and the center of the end face of the drill bit has a deep concave center part.Used for nucleation in the process of rock drilling, to ensure the straightness of the blast hole when drilling deep holes, only suitable for drilling soft rock and medium-hard rock.

Second, use theory Ming 1. Choose the down-the-hole drill bit according to the rock condition (hardness, abrasiveness) and drilling rig type (high wind pressure, low wind pressure).Different forms of alloy teeth and tooth arrangement methods are suitable for drilling different rocks.Choosing the right down-the-hole drill bit is the prerequisite for obtaining the best use effect; 2. When installing the down-the-hole drill bit, place the bit gently into the drill sleeve of the down-the-hole impactor, and don't hit it hard to avoid damaging the shank of the drill bit. Or the drill sleeve; 3. During the rock drilling process, ensure that the air pressure of the down-the-hole drilling rig is sufficient.If the impactor works intermittently, or the powder discharge from the blast hole is not smooth, check the compressed air system of the down-the-hole drill to ensure that there is no slag in the hole during the drilling process; 4. If metal objects are found to fall into the hole, it should be timely Use a magnet to pull out or take it out by other methods to avoid damaging the drill bit; 5. When replacing the drill bit, pay attention to the size of the drilled blast hole.If the drill diameter is excessively worn, but When the blast hole is not well drilled, do not replace the new drill bit, so as not to stick the drill.Used old drill bits with roughly the same wear diameter can be used to complete the job.


# by lukekay | 2021-03-23 12:08