Process for machining retaining ring forged piece of wind driven generator

A wind power generator and processing technology, applied in the direction of engine components, mechanical equipment, etc., can solve the difficult to ensure the use of retaining ring forgings in wind power generators, and the strength performance cannot meet the use of retaining ring forgings in wind power generators It is difficult to meet the requirements of the use of wind turbine ring guards, etc., to achieve the effect of refinement, not easy to be magnetized, and increase strength

Inactive Publication Date: 2011-11-23
江阴燎原装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The forging of the retaining ring in the wind turbine is an important part of the wind turbine. In the prior art, the raw material for the forging of the retaining ring of the wind turbine is generally 50Mn18Cr5 steel. Through long-term practice, it is found that the tensile strength and yield strength of this steel are relatively high. Low, it is difficult to meet the requirements for the use of retaining rings in wind turbines, while other steel materials or high cost, or their performance in terms of strength cannot meet the needs of the use of retaining ring forgings in wind turbines
In addition, using the existing processing technology of retaining ring forgings: electric furnace smelting → finished steel ingot → forging (pier thick → elongated → punching → reaming → leveling) → mechanical performance inspection → finishing; it is difficult to guarantee its mechanical properties The performance meets the needs of the use of retaining ring forgings in wind turbines

Method used

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  • Process for machining retaining ring forged piece of wind driven generator
  • Process for machining retaining ring forged piece of wind driven generator
  • Process for machining retaining ring forged piece of wind driven generator

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0032] The present invention is a processing technology for a wind power generator retaining ring forging, and the processing technology includes the following process steps:

[0033] The first step: select 1Mn18Cr18N steel as the raw material for the production of retaining ring forgings;

[0034] Step 2: Melting the raw materials in an electric furnace, and casting the smelted molten steel into billets;

[0035] Step 3: Electroslag remelting is performed on the cooled billet;

[0036] The fourth step: recrystallize the molten steel after electroslag remelting to make steel ingots;

[0037] Step 5: Heating the cooled ingot for forging;

[0038] Step 6: Perform solution heat treatment on the forged forging;

[0039] Step 7: Perform cold expansion forming treatment on the forging after solid solution heat treatment;

[0040] Step 8: Carry out the mechanical performance test of the cold expansion treated forging;

[0041] Step 9: Finish the qualified workpiece to make motor...

Embodiment 2

[0044] On the basis of the above-mentioned embodiment 1, a preferred embodiment of the present invention is that in the fifth step of the forging process, the steel ingot is first heated to about 1200 degrees, and then the heated steel ingot is thickened and drawn by a forging press. Long, punching, reaming and flat forging processes.

Embodiment 3

[0046] On the basis of the above-mentioned embodiment 2, a further preferred embodiment of the present invention is that in the S6 solution heat treatment process, the forging is heated to a high-temperature single-phase region and maintained at a constant temperature, so that the excess phase is fully dissolved into the solid solution, and then the The forging is rapidly cooled in water to obtain a supersaturated solid solution forging.

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Abstract

The invention discloses a process for machining a retaining ring forged piece of a wind driven generator. The process comprises the following steps of: selecting 1Mn18Cr18N steel as a raw material for producing the retaining ring forged piece; smelting in an electric furnace, remelting electroslag, and forming a steel ingot; forging (upsetting, drawing out, punching, chambering and flattening), performing solution heat treatment, performing cold expansion, inspecting mechanical performance and performing finish machining to prepare a finished product. Due to the adoption of the new material and the new process, the tensile strength of the retaining ring forged piece is improved from 895 to over 1,035, the yield strength is improved from 760 to over 900, the quality of the product is more stable, and the service life is prolonged. In addition, the retaining ring forged piece is forged by using a multi-directional forging mechanism in a forging process and metal can flow reasonably in the pressed state by the forging mechanism in the forging process, so the forged piece is refined, and the finished product ratio of the forged piece is improved.

Description

technical field [0001] The invention relates to a processing technology of a retaining ring component in a wind power generator, in particular to a processing technology of a wind power generator retaining ring forging. Background technique [0002] Wind turbine retaining ring forgings are key components in wind turbines. Wind turbines are generally installed in the wilderness, field, mountain pass, seaside and other places with strong wind energy and no shelter around. The generator and gearbox are installed in the narrow cabin on the tower of the unit, tens of meters away from the ground or even More than one hundred meters high. Affected by extreme heat and cold and extreme temperature difference all year round, the natural environment is harsh, transportation is inconvenient, and repair is very difficult. Moreover, the failure period generally occurs during the peak period of power generation. Once the generator fails, it will seriously affect the economic benefits of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21K1/76
Inventor 赵林华沈炎
Owner 江阴燎原装备制造有限公司
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