Down The Hole Hammer

 

Advantages:

1. Due to the unique inner construction of the DHD series Down The Hole Hammer, which was created in accordance with the most recent rock drilling theory, it delivers maximum energy to the drilling bit, fast drilling speed, and minimal air consumption.

 

2. The Down The Hole Hammer has a smooth performance and a long service life thanks to the use of premium alloy steel materials and cutting-edge processing technologies.

 

3. Low problem rate and simple maintenance due to the Down The Hole Hammer's inner construction being basic, dependable, and easy to install and disassemble.

 

Our business can provide you with high pressure and medium to low pressure Down The Hole Hammer and bit due to our professional manufacturing experience. It closely complies with API standards and other business norms in China.

 

The Role Of DTH Hammer：

For percussive rotary drilling, work in tandem with the drilling rig and appropriate drilling instruments by using a Down The Hole Hammer (pneumatic impactor). The bottom end of the drill pipe is connected to the Down The Hole Hammer. The drill rig rotates the drill pipe. The drill pipe is where compressed air (compressed air) enters the Down The Hole Hammer to provide a certain frequency of impact force to shatter the rock. The exhaust gas is also employed to assault the hammer at the same time. The drill bit (bit) cools and expel the chiseled cuttings from the hole.

 

 

Technical Parameters Of DHD350 COP54 DTH Bits

 

Diameter		Gauge Buttons	Front Buttons				Weight(KG)	Part Number
mm	Inch		Flat Face	Convex Face	Concave Face	Face Type
140	5 1/2	Φ18*7	Φ14*3	Φ15*4	/	Convex Face	15.3	LN-DHD350-140CV
140	5 1/2	Φ16*8	Φ14*8	/	/	Flat Face	15.5	LN-DHD350-140FF
146	5 3/4	Φ18*8	Φ15*8	/	/	Flat Face	16.1	LN-DHD350-146FF
146	5 3/4	Φ18*8	Φ15*4	/	Φ14*3	Concave Face	16.0	LN-DHD350-146CC
152	6	Φ18*8	Φ15*8	/	/	Flat Face	16.6	LN-DHD350-152FF
152	6	Φ18*8	Φ16*4	/	Φ14*4	Concave Face	16.4	LN-DHD350-152CC

 

 

When a Down The Hole Hammer encounters hard stone formations during drilling, several types of damage can occur:

 

Wear and Erosion: Hard stone formations can cause excessive wear on the hammer's internal components, including the piston, hammer body, and bit retaining threads. The repeated impact against the hard rock can erode the surfaces, leading to reduced efficiency and performance.

 

Cracks and Fractures: The intense pressure and impact from drilling into hard stone can cause cracks or fractures in the hammer body or other critical parts. These cracks can compromise the structural integrity of the hammer and may lead to complete failure if not addressed.

 

Bit Damage: Hard stone formations can result in significant wear, chipping, or breakage of the drill bit. The constant impact against the hard rock can cause the bit to dull quickly or even break, requiring frequent bit replacements.

 

Internal Component Misalignment: The excessive force exerted on the Down The Hole Hammer when drilling into hard stone can lead to misalignment of internal components. Misalignment affects the hammer's performance and can result in reduced energy transfer, decreased drilling efficiency, and potential failure.

 

Overheating: Drilling into hard stone formations generates more heat due to increased friction. If cooling and flushing mechanisms are inadequate, the DTH hammer can overheat, leading to thermal stress and potential damage to the hammer's internal components.

 

Reduced Penetration Rate: Hard stone formations can significantly slow down the drilling process. The prolonged drilling time required to penetrate hard rock can increase the overall wear and strain on the Down The Hole Hammer, potentially affecting its longevity.

 

 

For delivery goods , we promise to do the followings:
Principles：
1.Prompt responses to requests for quotation;

2.Our quotation to clearly state that it is based on customer’ Standard Purchase Order Term;or an existing agreement for the supply of goods;

3.Prompt order acknowledgement;
(i.e. confirmation that your company is in receipt of the purchase order and agrees to provide the requested goods at the specified price by the required date.)

4.Timely delivery;
( i.e. the goods are delivered on or before the required date, or notification is given well in advance that there will be a delay in supplying the goods.)

5.Order accuracy;
( i.e. no under-supplies, over-supplies, damaged, defective, or incorrect goods.)

6.Completeness;
(i.e. the ordered quantity is delivered 100% in full – no part orders or multiple deliveries without prior written agreement.)

7.Consignment notes are correctly marked;
(i.e. goods are consigned to the correct site as per the order.)

8.Goods are accompanied by all required paperwork and the item delivered is readily identifiable on all documents;
( i.e. consignment notes, packing slips, Material Safety Data Sheets, etc.)

9.Goods are appropriately packaged;

10.Accurate invoicing;
(i.e. the invoiced quantity and pricing is as per the purchase order line item.)

11.We demonstrate a commitment to responsible sourcing and sustainability improvements within their own supply chains.