Down the hole (DTH) drilling rig is the equipment that the impactor dives into the hole and directly impacts the drill bit, while the rotary machine drives the drilling hole to rotate and drill to the ore rock. In addition to drilling main blast holes in open-pit mines, down-the-hole (DTH) drilling rigs are also used to drill pre-split holes, anchor holes, slope treatment holes and groundwater drain holes, as well as vent holes, filling holes, pipe cable hole, etc. Down the hole (DTH) drilling rig is mainly composed of impactor, drill bit, lifting mechanism, pressure device, walking mechanism, slag discharging system, drilling rig and drill pipe. When choosing a down-the-hole (DTH) drilling rig, you need to consider various factors. This article will guide you on how to choose the right down-the-hole (DTH) drill from three important parts: drill bit, drill pipe, and impactor.
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1. Down the Hole (DTH) Drill Bit
In order to achieve higher drilling speed and lower perforation cost, it is necessary to select a suitable down-the-hole drill bit to drill in a specific rock.
(1) When drilling in hard rock, due to its large rock drilling power, each column tooth and bit body bears a larger load, so the bit body and column tooth are required to have greater strength. When choosing the drill bit, the number of chipway should not be too many, generally choose the double-airfoil drill bit. The size of chipway should not be too large, so as not to reduce the strength of bit body. At the same time, the alloy tooth of the drill bit is recommended to choose the ball tooth, and the height of the ball tooth exposure should not be too large.
(2) When drilling in the soft rock with good drillability, the drilling speed is fast and the relative slag discharge quantity is large, which requires the drill bit to have a strong slag discharge capacity. It is recommended to choose the tri-airfoil or quad-airfoil drill bit. Slagging chute can be appropriately larger and deeper. Alloy teeth can choose spring teeth or chipped teeth, and tooth height can be relatively higher.
(3) When drilling in crushed zones with relatively developed joints, in order to reduce the deflection, it is recommended to use the middle concave or middle protruding drill bit with better steering.
(4) When drilling in the rock with better toughness, it is recommended to use the wedge-shaped tooth bit.
2. Down the Hole (DTH) Drill Pipe
The shape of the drill pipe will affect the drilling efficiency. According to the hydrodynamic theory, only when the air velocity in the annular channel formed by the drill pipe and the hole wall is greater than the suspension velocity of the slag, the slag can be smoothly discharged out of the hole. The airflow velocity in the channel is mainly determined by the channel cross-sectional area, the channel length and the impactor discharge volume.
- The smaller the channel cross-sectional area, the higher the flow velocity.
- The longer the channel length, the lower the flow velocity.
It can be seen that the larger the drill pipe diameter, the higher the air velocity, and the better the slag discharge effect. Generally the diameter of the channel is between 10-25mm. Lower limit for deep holes and upper limit for high pressure.
The choice of drill pipe should not only consider the slag discharge effect, but also its bending resistance, torsion strength and weight, which are mainly determined by the wall thickness of the drill pipe. Under the premise of ensuring strength and rigidity, the selected drill pipe wall should be as thin as possible to reduce its weight, and the wall thickness is generally 4-7mm.
3. Down the Hole (DTH) Drill Impactor
Geometric parameters of drilling hole, working pressure and rock consolidating coefficient are the original parameters for the design of drill impactor. Thus the appropriate size of the drill impactor can be determined and the ideal impact energy and impact frequency can be obtained. The drill impactor can only play a better rock drilling effect in the specific working pressure, specific process parameters and specific lithology.
(1) Working Pressure
The higher the working pressure of the down-the-hole drilling impactor, the faster the rock drilling speed. Since the drill impactor is designed according to a specific pressure, it performs best only within a given design pressure range. If the impactor is not used within the designed pressure range, not only will it not be able to exert its due efficiency, but it will cause the impactor to fail to work or prematurely damage. Therefore, the corresponding drill impactor must be selected according to the pressure grade.
(2) Impact Energy
The impact energy of the down-the-hole drilling impactor must ensure the specific energy of the drill bit, so as to effectively break the rock, and at the same time obtain a more economical specific energy and a higher drilling speed. If the impact energy is too large, it will not only cause energy waste, but also shorten the life of the drill bit. If the impact energy is too small, the rock cannot be broken effectively and the drilling speed will be reduced. Different rocks require different specific energies for chipping, so drill impactors with different impact energy need to be selected.
(3) Impact Frequency
Generally, when the impact energy is constant, the higher the impact frequency, the greater the impact power. However, the outer diameter of the impactor is constrained by the diameter of the borehole. The higher the impact frequency, the smaller its impact energy. Therefore, the increase of impact frequency is limited by the specific work of rock chipping.
To Wrap Up
The above describes how to choose the right down-the-hole drill equipment from the perspective of the drill bit, drill pipe and impactor. In addition, the specific conditions of the mine, mining technology, blasting parameters, equipment prices and other factors must be considered comprehensively. Or you can directly consult a professional mining equipment manufacturer to choose a down-the-hole drilling rig that is really suitable for your mine.
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DTH Drilling Machine
DTH drilling machines have been gaining in popularity over the past few years. This is because they are incredibly efficient and can be used for a wide range of purposes. If you are in the market for a DTH drilling machine, you may be wondering how to find the best price. But how do you know if you are getting a good deal?
In this blog post, we will take a look at what factors you should consider when looking for a DTH drilling machine. We will also provide some tips on how to find the best price.
So, if you are in the market for a DTH drilling machine, read on to learn more!
1. Definition of Dth Drilling Machine
A DTH drilling machine is a piece of equipment that is used to drill holes in the ground. DTH means down-the-hole. This type of drilling machine is used to create holes in rocks or soil. The DTH drilling machine is also known as a rock drill, and it is an important tool that is used in the mining industry.
The machine consists of a drill bit, a hammer, and a compressor. The drill bit is made of tungsten carbide and is attached to the end of the drill pipe. The hammer is used to strike the drill bit and create a hole in the ground. The compressor is used to provide air pressure to the hammer.
The DTH drilling machine is a versatile piece of equipment that can be used for various applications such as drilling water wells, oil wells, and natural gas wells. The machine can also be used for drilling holes for construction purposes.
2. The Different Types of DTH Drilling Machines Available on The Market Today
If you're in the market for a DTH drilling machine, you'll want to know about the different types of machines available. Here's a quick rundown of the most popular options:
Rotary Type
This type of DTH drill rig uses a rotating drill bit to create holes in the ground. The rotary type of DTH drilling machine is the most popular type of DTH drilling machine because it is very efficient and it can drill large holes in a short amount of time.
Crawler Type
This type of DTH drilling machine is very similar to the rotary type, but it uses a crawler instead of a rotating drill bit. The crawler type of DTH drilling machine is more expensive than the rotary type, but it is more versatile and it can drill smaller holes.
Portable Type
This type of DTH drill machine is very similar to the rotary type, but it is much smaller and can be easily transported from one location to another. The portable type of DTH drilling rig is the most expensive type of DTH drilling machine, but it is the most versatile and it can drill large holes in a short amount of time.
Now that you know about the different types of DTH drill rigs available on the market, you can start shopping for the best price for your client's business.
3. How to Choose the Right Type of DTH Drilling Machine for Your Needs
When it comes to finding the best prices for DTH drilling machines, there are a few things you need to keep in mind.
Type of Machine
The first thing you need to consider is the type of machine you need. This will determine the size of the machine and the features you need.
If you are only drilling small holes, then a compact machine would be sufficient. However, if your client needs to drill large holes, then you will need a machine that is designed for this purpose.
Reputable Manufacturer
Once you know what type of machine your clients need, the next step is to find a reputable DTH drilling machine supplier such as Drillrigy. There are many different DTH drilling rig manufacturers out there, so it's important to do your research and find one that offers the best prices.
Price
Finally, once you've found a reputable dealer, be sure to compare prices before making your purchase. By taking the time to do all of this research, you'll be sure to find the best price for the DTH drills that are right for your client's needs.
4. The Benefits of Having a DTH Drilling Machine
Here are some of the benefits of having a DTH drilling machine.
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Improve Productivity
A DTH drilling machine can help to improve productivity in several ways. First of all, it can drill faster and more efficiently than other types of drilling machines. This means that your client can get the job done quicker. In addition, a DTH boring machine is less likely to break down, which can further improve productivity.
Versatility
This means that you can use it in both indoor and outdoor applications, and in all kinds of weather conditions. This versatility can be a huge advantage, as it means that you won't have to purchase multiple drilling machines for different applications.
Powerful
A DTH rig machine is also a very powerful piece of equipment. This means that it can handle tougher materials, such as concrete and rock. It also means that your client won't have to worry about the drill getting stuck in the material.
Improved Safety
Another benefit of having a DTH drilling machine is that it can help to improve safety. This is because it is less likely to break down, and because it is more powerful, it can drill through tougher materials without breaking. This means that there is less of a chance of injuries occurring.
Require Less Maintenance
DTH drilling machines are also low maintenance. Your client doesn't need to do a lot to keep them running smoothly and efficiently. This is good news for businesses that don't have the time or money to invest in extensive upkeep.
Overall, a DTH drilling machine can offer several benefits, both in terms of efficiency and productivity. If you are looking for a versatile, powerful, and safe drilling machine, then a DTH drill is the perfect choice for your client's business.
5. Typical Price of A DTH Drilling Machine and Its Accessories
The DTH drilling machine price is not a cheap investment. The price of the machine itself can range from USD 50,000 to over USD 100,000. The DTH boring machine price varies depending on the brand, model, and features.
The cost of the machine is just a part of the investment as your client will also need to factor in the cost of its accessories and maintenance. Here is a quick breakdown of the cost of each accessory:
- Drilling Rods: USD 300 to USD 600 per piece
- DTH hammer: USD 500 to USD
- Bit: USD 100 to USD 600
The total cost of a China DTH drilling machine will depend on the specific model and brand that you choose. Make sure to do your research before making a purchase.
6. Where to Buy a DTH Drilling Machine
Here are the places you can purchase a DTH drilling machine:
China
Being the home of most of the world's manufacturers, it is no surprise that China is also where you can buy a DTH drilling machine at the best price.
Online Retailers
Many online stores sell DTH drilling machines. You can compare the prices and features of different models before making a decision.
Local Store
You can also check out your local hardware store or home improvement center. They may not have as many models to choose from, but you can get a good idea of what is available and talk to someone in person about which one would be best for your client's needs.
7. 5 Tips on How to Use a DTH Drilling Machine Safely and Effectively
If your client is thinking of investing in a DTH drilling machine, it's important to know how to use it safely and effectively. Here are some tips:
No. Tips
1 Read the Manual
2 Wear the Right Personal Protective Equipment
3 Always Keep the Area Around the Machine Clean
4 Make Sure to Use the Right Drill Bit
5 Do Not Overuse the Machine
#1 Read the Manual
This might seem like an obvious one, but it's important to read the manual before using any new piece of machinery. Familiarize yourself with all the safety features and procedures.
#2 Wear the Right Personal Protective Equipment
When an operator is using a DTH drilling machine, it's important to wear the right personal protective equipment. This includes gloves, ear protection, and safety glasses.
#3 Always Keep the Area Around the Machine Clean
It's important to keep the area around the machine clean, both for the operators' safety and the machines. Make sure there are no loose objects around that could fall and injure them.
#4 Make Sure to Use the Right Drill Bit
Using the wrong drill bit can damage the machine and cause accidents. Make sure the operator using the right drill bit for the job.
#5 Do Not Overuse the Machine
Like any piece of machinery, it's important not to overuse the machine. If the operator notices anything abnormal, stop using the machine and contact a professional.
Following these tips will help your client get the most out of their DTH drilling machine and prevent accidents. If you have any questions, be sure to consult the manual or contact the manufacturer for assistance.
8. Factors You Should Consider when Purchasing a DTH Drilling Machine
You might be wondering what factors you should consider when purchasing one. Here are a few things to keep in mind:
Size of the Hole
The size of the hole will determine the size and power of the machine you need. If you need to drill a large hole, you'll need a more powerful machine.
Type of Terrain
If your client is going to be drilling in tough terrain, they'll need a machine that is designed for it. There are machines specifically made for different types of terrain, so make sure to get the right one.
Budget
DTH drilling machines can range in price, so it's important to consider your client's budget when making a purchase.
Warranty
Be sure to check the warranty before making a purchase. Some companies offer longer warranties than others.
Customer Service
If you have any questions or problems, you'll want to make sure the company you're buying from has good customer service.
Delivery Time
If your clients need the machine quickly, be sure to ask about delivery time when making a purchase.
Keep these factors in mind when shopping for a DTH drilling machine and you'll be sure to find the right one for your client's needs.
9. Reasons Why You Should Invest in A DTH Drilling Machine as A Small Business Owner
As a small business owner, you may be thinking that a DTH drilling machine is not within your client's budget. Here are some of the reasons why you should invest in a DTH drilling machine:
- You will be able to drill through almost any material, including concrete, stone, and asphalt.
- The machine is very versatile and can be used for a variety of drilling applications.
- It is relatively easy to operate, so you will not need to hire a professional operator.
- A DTH drilling machine is much faster than traditional methods of drilling, so you will save time and money.
- The machine is very portable, so you can take it with you wherever you go.
- You will be able to drill holes of any size, so you can customize your projects.
- The machine is very durable and will last for many years with proper care.
DTH is a great investment for any small business owner who wants to save time and money on their drilling projects. Contact us today for more information about our DTH drilling machines.
Here's a video of DTH drilling, which you might find useful.
10. Conclusion
Ultimately, the best way to find a great price on a DTH drilling machine is to do your research and compare prices from multiple sources. By taking the time to do this, you'll be sure to find the best possible deal on the perfect machine for your client's needs.
Contact us today at Drillrigy to get started on your search for the perfect DTH drilling machine. Our experts are always happy to help you find the best possible option for your needs and budget.
The company is the world’s best Crawler Mounted Pneumatic Tophammer Drill Rig supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
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