High-quality taper drill pipes require the following:
1. High fatigue strength and toughness
2. High wear resistance and resistance to permanent deformation
3. Precision tolerances (for automated manufacturing processes)
4. Uniform response to heat treatment
5. Uniform straightness (no straightening required)

Last week, our company visited LIUTECH. Liutech products are with advanced technology from Europe. As company which pioneered to have screw air compressor production license. Liutech commit to brand promise “We take care your compressor air”，and develop more air solution to customers .

In the vast arena of geological exploration and water well drilling, DMiningwell has launched its first extraordinary vehicle-mounted drilling rig - RD400. It is like a bright new star, shining with innovation and efficiency, bringing new changes and unlimited possibilities to the industry.

At present, the global demand for water well drilling rigs is still increasing day by day, and the design of water well drilling rigs is gradually evolving and optimizing. The more user-friendly design is more conducive to the control of the driller, and the high-quality and high-torque drilling rig also greatly improves the working efficiency of the water well drilling rig.
So in the face of global customers, how do you think to choose a water well drilling rig?
The first reaction of many customers should be: the first price (the cost of the product itself), the second quality or function of the product, and finally whether the supplier is reliable.

Obviously, these concerns are the most correct answers, but still ignore some other important factors. E.g:

Different rock formations and rock drills require different cone angles. Wide cone angles are often used when drilling with high impact hydraulic rock drills in moderately hard to hard and abrasive rock formations. Modern drill rigs typically use 11 and 12 taper angles. For low impact rock drills and softer rock formations, use a narrow taper angle of 7. The 7 angle can also be used if you have problems with the bit rotation when using the 11 and 12 equipment. Also, the 4.8 angle is perfect for soft rock when using a pneumatic or hydraulic drill to prevent the bit from spinning or falling off. A single drill pipe is used to drill short holes (≤2.0m), while a drill pipe that can be connected is used to drill deeper holes (>2.0m) to avoid excessive bending stress.

Tapered bits are essential tools in various drilling applications, offering a multitude of functional advantages. Their tapered design is a key feature that enables them to perform with precision and efficiency. The gradually decreasing diameter from the tip to the shank allows for smooth entry into the material being drilled, reducing the initial impact and minimizing the risk of damaging the surface or causing the bit to wander. This is particularly crucial in tasks such as woodworking, where a clean and accurate hole is desired.

In metalworking, tapered bits exhibit excellent heat dissipation properties. The tapered shape promotes better air circulation and heat transfer away from the cutting edges, preventing overheating and extending the bit's lifespan. Their ability to cut through different thicknesses of metal with relative ease is another significant advantage. They can start a hole in a thin sheet and continue drilling through thicker sections without the need for frequent bit changes, saving both time and effort.

For masonry and concrete drilling, tapered bits are engineered to withstand the high compressive forces and abrasiveness of these materials. The hardened tips and durable construction ensure that they can effectively penetrate and break up the hard substances. The tapered geometry also helps in self-cleaning during the drilling process, as the debris is pushed outwards along the taper, preventing clogging and allowing for continuous drilling.

Overall, tapered bits prove to be highly versatile and reliable, enhancing the productivity and quality of drilling operations across multiple industries and applications.

DTH hammer can be divided into valve type DTH hammer and valveless DTH hammer according to the air distribution method. The main manifestations of DTH hammer failure are DTH hammer non-impact, weak impact and intermittent impact.

In addition to the correct choice of carbide grade, the efficiency of rock drilling is influenced by many factors, mainly the shape of the drill head, the hardness of the rock, the compressed air pressure, the method of powder discharge, the diameter of the borehole and the depth of the borehole.

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