Product categories and market overview of rock drilling tools: DTH percussion drill
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Different from the top hammer type rock drilling tool, the down-the-hole percussion rock drilling tool is a medium and large-diameter drilling and blasting method construction rock drill that uses compressed air as the power source to enter the power part into the rock hole for rock drilling. At present, it is widely used in rock drilling engineering at home and abroad.
DTH percussion drilling tools are usually composed of three parts: drill bit, hammer and drill pipe, which are equipped on the drilling rig (drill stand) and equipped with an air compressor to form a rock drilling unit. According to the different compressed air pressure used by DTH percussion drilling tools, it is usually divided into low pressure DTH drilling tools (pressure 0.6-0.8Mpa), medium and high pressure DTH drilling tools (pressure 1.0-2.0Mpa), high pressure DTH drilling tools (pressure 1.0-2.0Mpa), and high pressure DTH drilling tools There are three types of DTH drilling tools (air pressure greater than 2.5Mpa).
Due to the different driving air pressure, the rock drilling efficiency of DTH drilling tools is also different, and the performance requirements of the products are also different. Therefore, the product prices of low pressure DTH drilling tools and medium and high pressure DTH drilling tools are also quite different.
At present, medium and high pressure DTH rock drilling tools are used in open-pit and underground mines, quarries, hydropower projects, water well drilling, mineral exploration, rock-mass cable anchoring hole drilling, geothermal drilling, and subway engineering excavation side pile support. It is a medium and large-diameter rock drilling tool product that is widely used in construction sites such as protection. Medium and high pressure DTH rock drilling tools have a series of characteristics such as fast drilling rate, high blast hole flatness, smooth hole wall, good rigidity of drill pipe and hammer, etc., and are generally valued by rock drilling construction units. At present, in the construction sites where 110-178mm blast-holes are drilled in domestic rock drilling projects, high wind pressure down-the-hole rock drilling tools are a kind of rock drilling tools that are widely used.
High-pressure DTH drilling tools have very strict requirements in terms of material, machining, heat treatment process, and the overall matching performance of the product. At present, the domestic high-pressure DTH drilling tools are in the development stage of product performance and product quality. Domestic and foreign markets have more room for market expansion.
