Plasma or Laser Cladding Mine Cutting Picks
Anti-Abrasion Cutting Picks Technique:
The cutting Picks, as a wear-prone component of coal mining and tunneling machines, is a critical tool for coal cutting and crushing. It shoulders the primary workload of our equipment, meaning the quality of the cutting Picks directly impacts the overall productivity of our machinery. In daily operation, we use cutting Picks equipped with wear-resistant layers to ensure continuous work. How to effectively coat the working surface of the cutting Picks with a durable and high-quality wear-resistant layer is a challenge that Deewi Automation is eager to address for you. Practical applications have proven that utilizing the abrasion-resistant Weld Overlay technique can effectively solve this issue.
Common Wear-Resistant Weld Overlay Techniques for Cutting Picks:
The primary wear-resistant Weld Overlay techniques we often utilize for cutting Picks include the Plasma Hardfacing process and the Laser Cladding process. Each has its distinct costs and characteristics. The Laser Cladding process has a more concentrated energy source, quicker heating and cooling, less thermal influence and damage to the product, and offers greater flexibility in material selection. However, due to its smaller focus area, it’s more suitable for precision component treatment. This makes it less efficient for large area cladding operations, and laser equipment also has higher costs, including subsequent operational and maintenance expenses. On the other hand, the Plasma Hardfacing process boasts a much higher efficiency compared to the Laser Cladding process. It can effectively treat large surface areas of workpieces, offers lower equipment costs, and is simpler in terms of post-operation maintenance. Nevertheless, the Plasma Hardfacing process has a larger thermal influence zone and requires more protective gas to prevent oxidation. Additionally, the bonding strength between the clad layer and the base material might be weaker than that achieved with the Laser Cladding process.
Plasma Hardfacing Mining Picks
Laser Cladding Mining Picks
Effects After Using Plasma or Laser Cladding on Cutting Picks:
- Significant enhancement in wear resistance.
By cladding a high-hardness metal-ceramic layer on the cutting Pick’s head, its performance is markedly improved. The Pick becomes harder, more ductile, wear-resistant, and shock-resistant. This effectively protects the front end of the cutting Pick, drastically reducing the wear rate and significantly extending its service life. - Notable improvement in bending resistance.
We use ANSYS software to simulate the breakage and bending scenarios of the cutting Pick during operation. Based on the results of this analysis, we design its unique heat treatment and cladding process, which considerably strengthens the Picks and enhances its resistance to bending. - “Spark-free” operation.
Conventional cutting Picks, especially when cutting rocks, tend to produce sparks, posing significant safety risks. The high-tech metal-ceramic materials used by Deewi Automation are not only hard and wear-resistant, but their unique properties also reduce spark generation by over 90%. This greatly improves safety in coal mining.
In comparative grinding tests using both standard and reinforced cutting Picks, results indicated that while the standard cutting Picks produced a plethora of bright, diverging sparks about 60cm in length, the reinforced Picks generated virtually no sparks or only a few dim sparks measuring 10-20cm in length. Want to know more.
