my country's rock drilling tool production has made great progress after decades of development-Jinan Institute of Metallurgical Science

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my country's rock drilling tool production has made great progress after decades of development

Release Time :

2016-04-18

After decades of development, the production of rock drilling tools in my country has made great progress. On this basis, further analysis and understanding of the production status and development direction of rock drilling tools will have a certain role and significance in promoting the technological progress and quality improvement of my country's brazing steel drilling tools.

my country's rock drilling tool production has made great progress after decades of development

Since the mid-1950s, my country has been producing air-leg rock drills, carbon steel drill rods and in-line drill bits. In the mid-1960s, with the increase in the demand for drilling tools in mining, the relevant ministries and commissions of the state began to invest in the construction of hollow steel and rock drilling tools production workshops in iron and steel production enterprises. In the early 1970s, the mass production scale of 22 mm hexagonal drill rods and in-line drill bits was formed. At the end of the 1970s, the domestically produced 22mm drill rod and in-line drill bit met the needs of the mining industry at that time, and the quality of the drill tools was also greatly improved.

Since the 1980s, the speed of domestic infrastructure construction has accelerated, and construction units have successively introduced a large number of hydraulic rock drilling rigs from abroad, among which fully hydraulic drilling rigs are the main ones. Domestic scientific research and production units have done a lot of work in the manufacture, process research and material selection of drill rods and ball-tooth drill bits for drilling rigs, so that the production of drill rods and drill bits for drilling rigs has formed a certain scale. By the 1990s, with the introduction of open-air hydraulic rock drilling rigs, the production quantity and varieties of drill rods and bits for domestic drilling rigs were further expanded, and many drill tool manufacturers correspondingly introduced drill rods and ball teeth. The production technology and manufacturing equipment of the drill bit, the performance and product quality of the ball-tooth drill bit have been greatly improved, and the production and export volume have also continued to increase, making the ball-tooth drill bit one of the main varieties of my country's export of drill products. one. However, due to the influence of the quality of domestic hollow steel, the drill rod for drilling rig still has a certain gap compared with similar foreign products.

In the early 1990s, due to reasons such as technical management, maintenance, supply of accessories, and performance of supporting drills, hydraulic rock drilling rigs, especially hydraulic excavation rock drilling rigs, were not popularized in domestic rock drilling projects. A large number of imported drilling rigs are idle. At the same time, the increase of self-employed small-scale mines has increased the amount of air-leg rock drills.

After the mid-1990s, the number of small enterprises producing light-duty rock drilling tools in China continued to increase, and the production volume increased, but the quality of the products declined, and domestic drilling tools began to enter a period of price competition.

At present, the technical content of 22 mm drill rods and in-line drill bits for air-leg rock drills produced by my country's brazing steel and drilling tools companies is relatively low, and the ball-tooth drill bits, shank shanks, and high and low air pressure DTH impactors are used for hydraulic rock drilling rigs. , Drilling tools with relatively high technical content such as down-the-hole drills also have problems such as poor quality stability coefficient and incomplete varieties and specifications. The rock drilling machinery and drilling tools that are widely used in domestic rock drilling projects are only equivalent to the level of industrialized countries in the 1940s.

At present, with the international well-known rock drilling machinery manufacturers and some powerful domestic enterprises investing in the field of rock drilling rigs and drilling tools, it can be expected that the domestic drilling (drilling) tools market is bred with a trend from low-tech conventional products to high-tech products. The stage of the development of technical content specialized products.