Ring forging of rotary support ring for wind power equipment and method for manufacturing same

Abstract

The invention discloses a ring forging of a rotary support ring for wind power equipment, which is stable and reliable in quality and meets the use requirements in a severe environment. The ring forging comprises the following chemical elements by weight: 0.41 to 0.45 percent of C, 0.17 to 0.37 percent of Si, 0.60 to 0.80 percent of Mn, less than or equal to 0.025 percent of P, less than or equal to 0.025 percent of S, 1.0 to 1.20 percent of Cr, less than or equal to 0.30 percent of Ni, 0.15 to 0.25 percent of Mo, less than or equal to 0.025 percent of Cu, 0.01 to 0.04 percent of Al, and the balance of Fe; moreover, the contents of hydrogen and oxygen elements meet the following requirements that: [O] is less than or equal to 20 ppm, and [H] is less than or equal to 2.0 ppm. The manufacturing method comprises the following steps of: selecting billet steel prepared by the components as a raw material; and performing blending, forging, blanking, ring rolling, thermal treatment and finishing turning machining on the billet steel to obtain the ring forging of the rotary support ring. The method is characterized in that: a workpiece obtained after the forging, blanking and ring rolling is subjected to rough turning machining, and then subjected to the thermal treatment including thermal treatment normalizing and thermal treatment tempering. The product manufactured by the method can meet the requirements of the large-sized wind power equipment.

Description

technical field [0001] The invention relates to a slewing support ring on a MW-level wind turbine pitch and yaw tower used in wind power equipment, in particular to the forging of the slewing support ring and a preparation method thereof. Background technique [0002] As a clean and renewable energy source, wind power is a new emerging industry. The MW-level wind turbines used for wind power equipment and the slewing support ring on the yaw tower are the load-bearing and transmission parts of wind power equipment. Specific use requirements such as wind energy, +40℃~-40℃ ambient temperature, carrying power and carrying loads; it is required that quality problems should not occur within 20 years under relatively severe weather conditions. The currently used slewing support rings generally use the billet steel made of 42CrMo4V material in the European standard BS EN10083-1:2006 as the raw material for initial processing. After the sequence, a ring forging that meets the requir...

AI Technical Summary

Problems solved by technology

The disadvantages of traditional slewing bearing ring forgings are: due to the large range of material composition and physical and chemical indicators, the forging and heat treatment process is simple and rough, resulting in unstable product quality, and it is still difficult to meet the needs of strong wind energy, +40℃~-40℃ Under the ambient temperature of ℃, specific use requirements such as carrying power and carrying loads

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