Tapered Bit is a tool for connecting drill bits and rock drills in tunnel engineering. The drill rods generally used in mine shaft engineering are hexagonal hollow steel and hollow round steel. The inner diameter of the hexagonal hollow steel is 22mm and 25mm, and the outer diameter of the hollow round steel is 32mm and 38mm. For the steel drill, the finished drill is forged to a certain length and then directly installed with the drill bit gouge. The forged steel drill is to cut the hollow hexagonal steel according to the need, and then use the forging drill to forge the drill tail and the drill head. Then install the drill bit to gouge the eye. The quality of the drill rod depends on many factors such as the steel type, heat treatment process, the structural design of the drill rod, the transition between different sections, and even the size of the transition arc. Among them, the heat treatment of the drill rod is the main reason for the low life or early failure of the drill rod among the above-mentioned factors. The correct selection of the heat treatment process of the drill rod will effectively improve the quality and service life of our country's drill rod products, reduce consumption, and help improve the overall social benefits.
Qianwang drill tool rock drilling with cone connection hollow hexagonal drill rod implementation GB/T6481-2002
The cone-shaped hollow hexagonal Drill pipe produced by our company has won a number of national patents. Perfectly match the inline, cross and button rock drill bits of corresponding specifications. Nowadays, large-scale, assembly line operation has been formed, and the quality of each process is strictly controlled, and substandard products are prevented from entering the next process. Due to the excellent quality and stable performance, the products are trusted by the majority of users. For many years, the product sales have been at the forefront of the domestic industry. The company can also customize non-standard drilling tools according to customer requirements.