Many cutter dealers need to understand the coal cutting method of the shearer cutter, and understand the coal cutting process of the shearer in order to have a clearer understanding of the purpose and value of the cutter. In this way, when selling the cutting teeth, key recommendations and relevant information descriptions can be made based on the customer's needs.
But most of us have never been underground and have never seen the operation process of a shearer. How can we know the coal cutting method and process of the shearer's cutting teeth? Let me take you to understand.The shearer cutter is a type of tool that can directly crush coal, and the shearer is the main equipment that can achieve modern coal construction. However, in work engineering, the cutting teeth of the coal mining machine are often subjected to strong impacts and wear during operation, and the cutting teeth also frequently wear out. The detachment and fragmentation of the cutting head also occur frequently. Therefore, the work of replacing the cutting teeth will become very frequent. We can reduce labor force and ensure the safety of employees during use, The work of the cutting teeth serves as the main load-bearing force during the construction process of the coal mining machine, which directly affects the cost of coal mining.
The entire coal cutting process of the shearer cutter is divided into four stages: coal deformation stage, crack generation stage, compaction core formation stage, and coal rock collapse stage. When the shearer starts to feed, the cutting teeth enter the coal rock mass under the action of the shearer drum, forming a compressive stress that causes the surface of the coal rock to begin to deform. Afterwards, the cutting teeth move repeatedly in the coal wall, continuously increasing the cutting force. When the shear stress of the cutting tooth is greater than the shear strength of the coal rock, cracks will appear on the surface of the coal rock.
After reading this article, you can have a better understanding of the entire process of coal cutting with the shearer's cutting teeth. Of course, it is also necessary to pay attention to the loss and replacement of the cutting teeth throughout the entire process. Choosing high-quality coal mining machine cutting teeth avoids time waste caused by replacing cutting teeth and is more conducive to improving efficiency.