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What should be paid attention to when using drill tools-YiKuang Technology
Release time:
2020-09-09
Author:
Source:
The drill rod is limited by the diameter of the drilling hole in the drilling and blasting project, and its cross-sectional area is very small. This slender rod should bear the cyclic stress of pulling, pressing, bending and twisting applied by the rock drill with high frequency and high impact under the condition of severe wear and corrosive medium. According to the different conditions such as load size and rock firmness, the rock drilling life is often only more than ten hours to more than one hundred hours. It is an engineering tool with the most demanding stress conditions, short service life, high technical content and huge consumption necessary for basic industries among all human mechanical tools. As every drill user wants to spend the least cost to get the most profit.
The drill rod is limited by the diameter of the drilling hole in the drilling and blasting project, and its cross-sectional area is very small. This slender rod should bear the cyclic stress of pulling, pressing, bending and twisting applied by the rock drill with high frequency and high impact under the condition of severe wear and corrosive medium. According to the different conditions such as load size and rock firmness, the rock drilling life is often only more than ten hours to more than one hundred hours. It is an engineering tool with the most demanding stress conditions, short service life, high technical content and huge consumption necessary for basic industries among all human mechanical tools.
As every drill user wants to spend the least cost to get the most profit, which requires reducing the loss of the drill, so the drill producers and users should work closely together to discuss, in order to improve the service life of the drill joint advice.
1, from the user's point of view, the choice of brazing products should have the following characteristics:
(1) High-quality brazing products: The brazing products are usually required to have a high life span to reduce the time for disassembling and replacing the brazing tail. The requirements for drill rods and drill bits are also quite high, because the drill rod will not only lose the drill rod and drill bit, but also cause waste holes. Due to the high degree of automation of the hydraulic rock drilling rig, the operator does not need to pay a lot of labor intensity in normal production, and the dismantling of the machine to replace the drill tail, salvage the broken drill rod or grinding the drill head, not only a waste of working hours, but also increased the labor intensity and labor costs of the operator. Therefore, users in the choice of drilling products, attention is not only the price of the product, more attention is the quality of the product.
(2) the best drilling rate: in the trolley operation, in addition to the cost of labor compensation and the purchase of drilling tools, other man-hour costs are regarded as fixed costs, and the cost of drilling tools in the drilling operation is very high, therefore, improve the drilling speed means to reduce the construction cost, so the user attaches great importance to improve the drilling speed.
(3) the minimum hole deviation: in the middle and deep hole drilling blasting, the hole deviation means that the amount of charge is reduced and the hole spacing is shortened, which also leads to the reduction of the amount of mining. Therefore, the user has high requirements on the straightness of the hole, which is usually controlled within a small error range. The main causes of blast hole deflection are hole error during drilling, hole calibration error and straightness error during drilling. The first two errors can be basically eliminated in full hydraulic drilling rig or computer-controlled hydraulic drilling rig. However, the blast hole deflection caused by the structure of drilling rig becomes the main reason. With the deepening of drilling depth, the deflection degree will increase and eventually lead to waste holes, the best way to reduce or eliminate blast hole deflection is to use guided drilling tools.
Key words:
Time, rock drilling, product, deflection, error, cost, reduction, requirement, user, improvement
