• The heat is concentrated, the heat input is small, the heat-affected zone is small, and it does not affect tissue changes;
• The cladding surface is smooth and the amount of machine addition is small;
• The melting depth is shallow, the dilution of the cladding layer is low, and the anti-corrosion effect is good;
• Suitable for cladding of a variety of materials with low cladding cost;
• The equipment has the advantages of high integration, high precision, and high adaptability;

Inner Hole Cladding Test

1. The inner wall of the cylinder liner is laser cladding with the inner hole. The thickness of the cladding layer is 0.3-0.6mm on one side. The surface of the cladding layer is continuous and uniform, and no pore defects are found.
2. Cut the cladding layer along the vertical cladding scanning direction to prepare a metallographic sample. Observe the combination of the cladding layer and the base material and the internal quality of the cladding layer with a 100x lens of a metallographic microscope. The cladding layer and the base material are metallurgically bonded. The penetration depth is shallow, no confusion and pore defects are found inside the cladding layer, and the thickness of the cladding layer is about 0.3mm.
3. The cladding parts are ground and processed. The thickness of the cladding layer remains about 0.15mm and the surface roughness is Ra0.8. A neutral salt spray corrosion test is carried out according to the GB/T10125-1997 standard. After 100 hours of continuous spraying, the surface of the cladding layer is observed. In terms of corrosion, no rust spots were found on the surface of the cladding layer.
4. Use a portable hardness tester to test the hardness of the cladding layer after grinding. Take 6 points evenly along the circumferential direction of the experimental tube. The hardness range of the cladding layer is about 50-53HRC.