Laser cladding Co-based alloy powder for conductor roll

Abstract

Provided is nickel-based alloy powder for laser cladding electricity conducting roller, the chemical components of the material mainly comprise the following elements including Ni, Cr, Mo, W, Co, V, Fe, Si, and Mn, the alloying components further comprise at least two rare earth elements among Y2O3, La2O3, Ce and Hf with proper amount, the weight percentages of the material of Cr 23-25%, Mo 14-16%, W 5-8%, Fe 6-10%, Co 3-5%, V 0.1-0.6%, Mn 0.5-2%, Si 0.2-2%, Y2O3 0.1-0.5%, Hf 0.1-0.5%, La2O3 0.1-0.5%, Ce 0.1-0.5%, and the rest is Ni. The alloy substrate of the invention is strengthened through multiple strengthened methods, and the crystal boundary quality is improved, which enables the alloy to achieve perfect combination property, thereby achieving medium rigidity and relatively high intensity of the alloy, simultaneously reducing alloy melting point and increasing properties of oxidation resistance, abrasion resistance, corrosion resistance, and certain electricity conduction. The invention provides an effective and convenient process for successful restoration of disabled electricity conducting roller parts of metallurgy industry.

Description

Technical field: [0001] The invention relates to material science, and provides a nickel-based alloy powder for laser cladding conductive rollers with moderate hardness, excellent oxidation resistance, corrosion resistance, abrasion resistance and excellent cladding performance. Background technique: [0002] As an advanced remanufacturing technology, laser cladding has been rapidly promoted and widely used with the continuous improvement of laser power and stability. Laser cladding is an advanced remanufacturing technology that obtains a high-performance surface coating that is firmly bonded to the substrate on the metal surface without pores, cracks and other defects. It can clad high-melting point alloy materials on the surface of low-melting point substrates , High-performance surface coatings can also be prepared on low-cost substrates to replace a large number of advanced, high-performance overall materials, save precious metals, and reduce component costs. Laser clad...

AI Technical Summary

Problems solved by technology

[0004] These mixed powders have problems such as uneven mixing, large particle size differences, different melting points, component deviations, and different expansion coefficients, which lead to defects such as cracks, pores, segregation, unstable performance, and difficulty in machining in actual cladding.