Wear-resistant coating for laser manufacturing of high-speed elevator traction wheel

Abstract

The invention discloses a wear-resistant coating for laser manufacturing of a high-speed elevator traction wheel. The wear-resistant coating is characterized in that a priming coating between a base material and a functional layer is not needed; a semiconductor laser unit is directly used for cladding a cobalt-base alloy wear-resistant coating on a nodular cast iron base material of the elevator traction wheel; and the wear-resistant coating comprises, by weight, 1.1-1.3% of C, 22-24% of Cr, 1.0-1.3% of Si, 1.3-1.5% of Ni, 0.1-0.15% of Mn, 2.5-2.8% of Mo, 4.5-4.7% of W, 2.8-2.9% of Fe, 1.6-1.8% of B, and the balance Co. According to the wear-resistant coating, by regulating the composition proportion of all the elements, an obtained cladding layer is free of inclusions, pores, cracks and other defects and is good in wear resistance and corrosion resistance and suitable for laser cladding of the high-speed elevator traction wheel.

Description

technical field [0001] The invention relates to an alloy material for laser manufacturing of conveying parts, in particular to a wear-resistant alloy coating for laser manufacturing of high-speed elevator traction wheels. Background technique [0002] The elevator traction sheave is a very important part of the elevator. The main form of damage to the elevator traction sheave is damage and corrosion, and the uneven wear between the grooves often causes the failure of the entire part, which eventually leads to the scrapping of the equipment; because the elevator traction sheave has to bear the load of the car, load capacity, counterweight and other devices All dynamic and static loads, so the traction sheave is required to have high strength, good toughness, wear resistance, and impact resistance, so nodular cast iron is often used as a material. In order to reduce the wear of the traction wire rope in the groove of the traction sheave, in addition to selecting a suitable gr...

AI Technical Summary

Problems solved by technology

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

[0008] Therefore, research and development of a new alloy powder for laser cladding with corrosion resistance and wear resistance and stable performance is a major topic in the technical field. After searching and checking by the applicant: there is no relevant research in this area at home and abroad. to report