In the mechanization process of coal mining, the coal mining machine tungsten carbide teeth, as a core component, plays a crucial role.
It is not only directly involved in the cutting process of coal, but also directly affects the working efficiency of coal mining machine and the quality of coal mining.
The cemented carbide teeth of coal mining machine is mainly composed of carbide cutter head and tooth body. The tungsten carbide cutter head is made of wear-resistant materials such as tungsten carbide, which has extremely high hardness and wear resistance, and is able to withstand the abrasion of direct contact with coal. The tooth body is usually made of high-quality alloy steel, with sufficient strength and toughness to support the stable operation of the cutter head in the work.
The working principle of coal miner carbide teeth mainly relies on its compound effect of rotation and impact. When the drum of the coal miner rotates under the drive of the motor, the cut-off teeth rotate together with it. In the process of rotation, the tungsten carbide cutter head of the cutter tooth comes into contact with the coal seam, and the coal is stripped off from the coal seam through the cutting action of the cutter head.
In addition to the rotating action, the carbide teeth are also subjected to the impact force from the drum. This impact force enables the cutter teeth to produce a certain crushing effect when cutting coal, further improving the efficiency of coal mining. At the same time, the impact force also helps to fling the stripped coal lumps out of the cut-off teeth, preventing the coal from accumulating on the cut-off teeth.
In order to make the coal miner interceptor carbide teeth work better, Jetvision improves and optimizes them in the following aspects:
1. Material selection and hardness enhancement
High strength alloy materials: Using high strength alloy materials to manufacture the interceptor teeth, such as tungsten carbide (tungsten cobalt alloy), can improve the wear resistance and impact resistance of the interceptor teeth.
Heat treatment process: Enhance the hardness and toughness of the cut-off teeth through appropriate heat treatment process (e.g. quenching and tempering) to prolong the service life.
2. Design optimization
Geometry design: Optimize the geometry of the cut-off teeth to make the force more reasonable when cutting the coal seam, reduce the stress concentration, and reduce the risk of fracture.
Cutting tool angle: Adjust the cutting tool angle (e.g. front angle, back angle, etc.) of the cut-off tooth to improve cutting efficiency and reduce cutting resistance.
3. Coating technology
Surface Coating: Apply advanced coating technology, such as titanium plating, chrome plating, PVD coating, etc., on the surface of the cut-off tooth to improve its surface hardness and abrasion resistance, and reduce the coefficient of friction.
4. Use and maintenance
Regular inspection and replacement: Regularly check the wear of the cut-off teeth, and replace the severely worn cut-off teeth in time to ensure the cutting efficiency and safety.
Correct installation: Make sure the cut-off teeth are installed firmly and at the right angle, avoid loosening and skewing to reduce unnecessary wear and damage.
5. Working environment optimization
Cooling lubrication: Use cooling lubricants during the cutting process to reduce the working temperature of the cut-off teeth and minimize friction and wear.
Clean working surface: keep the working surface clean to avoid the accumulation of coal dust and debris on the cut-off teeth, which will affect its cutting efficiency and life.
6. New technology application
Sensor monitoring: install sensors on the coal mining machine to monitor the working status of the cut-off teeth in real time (e.g. temperature, vibration, etc.), so as to discover and deal with abnormal situations in time.
Automation system: Introduce automation control system to automatically adjust the working parameters of the cut-off teeth according to the working environment and coal seam conditions, so as to improve the working efficiency and stability.
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