How to choose the rotary teeth for rotary drilling rigs
Published:
2020-11-11
With the rapid development of the domestic rotary drilling industry, the demand for rotary drilling rigs is also increasing. Especially in recent years, the domestic demand for rotary drilling rigs has increased year by year. Because of this, the company's demand for rotary digging gears is also increasing.
With the rapid development of the domestic rotary drilling industry, the demand for rotary drilling rigs is also increasing. Especially in recent years, the domestic demand for rotary drilling rigs has increased year by year. Because of this, the company's demand for rotary digging gears is also increasing.
1. Do not buy rotary digging teeth with many graphite impurities
Some rotary digging tooth manufacturers do not meet the standards, the most important of which is that there are too many graphite impurities, and too much graphite impurities will cause the hardness of the rotary digging tooth to fail to meet the standard, resulting in cracks and breakage. This is not sensational, in actual use, such a situation is more common.
In order to save the cost of coal mining, many manufacturers often do not pay attention to the choice of rotary digging teeth, so they will buy some poor quality rotary digging teeth. These rotary digging teeth are often unknown in the country during the manufacturing process. The inferior products produced by the manufacturers contain a lot of graphite impurities and the grain distribution is not uniform, which leads to insufficient hardness of the rotary digging teeth. In the actual use process, the rotary digging tooth will produce a high stress state when it is used, and it will break when encountering hard coal, rocks and other objects.
2. Don't buy a rotary digging tooth with high stress
At present, most of the domestic rotary digging tooth manufacturers use copper-zinc solder. The welding temperature of this material can generally reach more than 900 degrees, and the expansion coefficient between the metals is relatively large, so Will produce a lot of tensile stress. In the process of using rotary digging teeth, because the digging teeth will generate high temperature, the tensile stress generated by these copper-zinc brazing materials will cause the digging teeth to be heavily loaded, part of which comes from coal mines with strong external hardness of the digging teeth , The other part is the tensile stress from itself, so it will be prone to breakage of the rotary digging tooth.
To sum up, when manufacturers choose rotary digging teeth, they need to consider the above two requirements. Only in this way can they choose products suitable for their own equipment, further improving the manufacturer's production efficiency and saving production costs.
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