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How to judge the quality of the drill rod-beneficial mining technology.
Release time:
2022-02-17
Author:
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The drill rod is a tool for connecting the drill bit and rock drilling in the well and roadway engineering. The drill rods generally used in mine shaft engineering are hexagonal hollow steel and hollow circle steel. The inner diameter of hexagonal hollow steel is 22mm and 25mm, and the outer diameter of hollow circle steel is 32mm and 38mm. The steel rods include finished steel rods and forged steel rods. The finished steel rods are forged according to a certain length and then installed with drill holes. The forged steel rods are cut with hollow hexagonal steel as required, and then the drill ends and forging machines are used to forge. The quality of the drill rod depends on the steel type, heat treatment process, the structural design of the drill rod, the transition between different sections, and even.
The drill rod is a tool for connecting the drill bit and rock drilling in the well and roadway engineering.
The drill rods generally used in mine shaft engineering are hexagonal hollow steel and hollow circle steel. The inner diameter of hexagonal hollow steel is 22mm and 25mm, and the outer diameter of hollow circle steel is 32mm and 38mm. The steel rods include finished steel rods and forged steel rods. The finished steel rods are forged according to a certain length and then installed with drill holes. The forged steel rods are cut with hollow hexagonal steel as required, and then the drill ends and forging machines are used to forge.
The quality of the drill rod depends on many factors such as steel type, heat treatment brazing process, structural design of the drill rod, transition between different sections, and even the size of the transition arc.
Among the above factors, the heat treatment of the drill rod is the main reason for the low life or early failure of the drill rod. The correct choice of drill rod heat treatment process will effectively improve the quality and service life of our country's drill rod products, reduce consumption, and help to improve the comprehensive social benefits.Perfect match the corresponding specifications of the type, cross type, ball tooth type rock drill bit. At present, large-scale and assembly line operations have been formed. The quality of each process is strictly controlled, and unqualified products are prevented from entering the next process. Due to excellent product quality, stable performance, trusted by the majority of users, product sales for many years has been in the forefront of the domestic industry.
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Key words:
Technology, hollow, steel, heat treatment, drill bit, rock drilling, improvement, shaft, hexagonal, font
