The special equipment for pick cladding is designed and developed according to the pick-type pick cladding path and process requirements. It has an exquisite industrial design appearance. The motion mechanism uses a three-axis truss motion mechanism and a double-station turntable to ensure process quality and processing efficiency, as shown in Figure 8. Automatic loading and unloading tooling can also be installed to achieve continuous and efficient laser cladding of pick-shaped pick surfaces, which is suitable for batch, automated, and lean pick production and manufacturing.

Background of the project
my country has abundant coal resource reserves, and coal has been used as the main energy source for industrial production for a long time. As key equipment for mechanical automated coal mining, shearers, and tunnel boring machines play an important role. As shown in Figures 1 and 2, when the shearer and tunnel boring machine work together for coal mining, the tunnel boring machine crushes the coal seam at the front end, and the tunnel boring machine crushes the coal seam at the front end. During the forward advance, the cutting part where the cutting tool is located continuously collides with the coal seam and inclusions in the coal seam, causing the coal to fall off. The shearer collects the fallen coal and transports the coal out through the shipping components.
Picks are cutting tools installed on shearers and tunnel-boring machines. Picks on the market are generally divided into two categories according to their shapes. One is similar to a knife shape and is called a knife-type pick, as shown in Figure 3. The other is called a knife-type pick. It is a pick pick, as shown in Figure 4. Among them, the pick-type pick not only has the advantages of simple design and convenient manufacturing and processing but also has the characteristics of large-scale cutting of coal seams and the ability to realize intermittent coal mining. In addition, during coal mining, the rotation of the pick-type pick Interacting with the coal seam can help the pick to sharpen automatically and speed up the process of coal mining. Therefore, pick-type picks are widely promoted and used.

During the cutting process of the coal seam, the pick violently collides with the coal gangue, quartz, and other hard materials mixed in the coal seam. At the same time, the continuous operation of the pick causes the temperature of the tooth surface to rise sharply. When the pick surface temperature reaches 800 When the temperature is around ℃, its hardness will be significantly reduced. When it collides with the coal seam again, the pick head will fall off, deform, and wear, as shown in Figure 6, resulting in the failure of the pick. The failure of the pick not only greatly reduces the project progress and increases the cost of coal mining, but also increases the labor intensity of coal miners.

Laser cladding of picks

Laser cladding technology uses a high-power density laser beam to quickly heat and melt the metal substrate and the metal powder sent to the surface of the substrate. It takes full advantage of the extremely fast heating and cooling characteristics of the laser beam and continuously spreads it on the surface of the substrate to form a layer of bonding. The alloy coating with high strength, low dilution rate, and uniform composition improves the corrosion resistance, wear resistance, and high-temperature oxidation resistance of the base material. The surface of the pick is strengthened by the laser cladding process. For laser cladding of the pick as shown in Figure 7, a mixed material of iron-based alloy + ceramic particles is selected. The hardness can reach more than 60HRC, and the ceramic phase in the cladding layer is large. The wear resistance of the pick surface is greatly improved. The matrix phase iron-based alloy provides sufficient toughness to ensure the impact resistance of the pick. The service life is increased by more than 2 times, which effectively reduces the number of pick replacements, reduces the work intensity of personnel, and improves coal mining. The machine cuts coal efficiently, saves after-sales service costs, and creates more economic benefits.

Pick laser cladding equipment

The special equipment for pick cladding is designed and developed according to the pick-type pick cladding path and process requirements. It has an exquisite industrial design appearance. The motion mechanism uses a three-axis truss motion mechanism and a double-station turntable to ensure process quality and processing efficiency, as shown in figure 8. Automatic loading and unloading tooling can also be installed to achieve continuous and efficient laser cladding of pick-shaped pick surfaces, which is suitable for batch, automated, and lean pick production and manufacturing.