Ring forge piece material of wind power rotary supporting ring and ring forge piece manufacturing technology thereof

Abstract

The invention discloses a ring forge piece material of a wind power rotary supporting ring, comprising the following chemical elements in weight percentage: 0.41-0.45 percent of C, 0.17-0.37 percent of Si, 0.80-1.00 percent of Mn, at most 0.020 percent of P, at most 0.020 percent of S, 1.05-1.20 percent of Cr, at most 0.30 percent of Ni, 0.20-0.25 percent of Mo, at most 0.20 percent of Cu, 0.02-0.04 percent of Al, at most 20ppm of O, at most 2.0ppm of H and Fe as the rest. A wind power rotary supporting ring forge piece manufactured by the material comprises the following technical steps: blanking, forging to manufacture a blank, rolling a ring, hot treating and accurately turning, wherein the hot treating step comprises the steps of hot treatment normalization and hot treatment hardening and tempering. The ring forge piece material is suitable for the ring forge piece of the wind power rotary supporting ring.

Description

technical field The invention relates to a wind power slewing support ring forging, in particular to a material for a wind power slewing support ring forging and a manufacturing process for the ring forging. Background technique As a clean and renewable energy, wind power is a new emerging industry. The slewing support ring on the pitch of the wind turbine used for wind power equipment and the yaw tower is the load-bearing and transmission part of the wind power equipment, which needs to be used under strong wind force and +40~-40℃ ambient temperature to meet the specific use of bearing load and so on. requirements; and it is required that under relatively severe weather conditions, quality problems cannot occur within 20 years. The currently used wind power slewing support rings are generally made of billet steel made of 42CrMo4V material in the European standard BS EN10083-1:2006 as the raw material for initial processing, and are made after forging, ring rolling and heat...

AI Technical Summary

Problems solved by technology

The disadvantages of traditional wind power slewing bearing ring forgings are: due to the large range of material composition and physical and chemical indicators allowed, the heat treatment process is simple and rough, resulting in low toughness, plasticity and hardenability of the product, and low quality stability , it is still difficult to meet specific requirements such as strong wind force and +40~-40℃ ambient temperature, safe and stable load bearing, etc.

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