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Manufacturing method of high-strength flywheel energy storage rotor

A technology of flywheel energy storage and manufacturing method, which is applied in the field of forging to achieve the effect of excellent radial performance

Pending Publication Date: 2022-04-01
ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for manufacturing a high-strength flywheel energy storage rotor to solve the problem of the performance of the core of the rotor product with a large cross-section proposed in the background art

Method used

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  • Manufacturing method of high-strength flywheel energy storage rotor

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Embodiment 1

[0026] The invention provides a technical solution: a method for manufacturing a high-strength flywheel energy storage rotor, comprising the following steps:

[0027] Composition design and simulation experiments, the main components are: C, Mn, Cr, Ni, Mo, V, the element ratio is aimed at improving the hardenability, combined with the thermal simulation data, the core structure and mechanical properties of the forging are preliminarily determined;

[0028] Workpiece treatment, EF+LF+VD+IC+ESR, that is, adding electroslag remelting process on the basis of conventional smelting, casting or forging steel smelted in open hearth, converter, electric furnace, etc. into electrodes, and the molten electrodes are immersed in the slag pool of the water-cooled mold middle;

[0029] Three-way upsetting and elongating treatment, forging temperature 1247°C, upsetting and elongating in X, Y, and Z directions, upsetting ratio greater than 2, low-temperature forging in the forming stage, temp...

Embodiment 2

[0034] The invention provides a technical solution: a method for manufacturing a high-strength flywheel energy storage rotor, comprising the following steps:

[0035] Composition design and simulation experiments, the main components are: C, Mn, Cr, Ni, Mo, V, the element ratio is aimed at improving the hardenability, combined with the thermal simulation data, the core structure and mechanical properties of the forging are preliminarily determined;

[0036] Workpiece treatment, EF+LF+VD+IC+ESR, that is, adding electroslag remelting process on the basis of conventional smelting, casting or forging steel smelted in open hearth, converter, electric furnace, etc. into electrodes, and the molten electrodes are immersed in the slag pool of the water-cooled mold middle;

[0037] Three-way upsetting and elongating treatment, forging temperature 1230°C, upsetting and elongating in X, Y, and Z directions, upsetting ratio greater than 2, low-temperature forging in the forming stage, temp...

Embodiment 3

[0042] The invention provides a technical solution: a method for manufacturing a high-strength flywheel energy storage rotor, comprising the following steps:

[0043] Composition design and simulation experiments, the main components are: C, Mn, Cr, Ni, Mo, V, the element ratio is aimed at improving the hardenability, combined with the thermal simulation data, the core structure and mechanical properties of the forging are preliminarily determined;

[0044] Workpiece treatment, EF+LF+VD+IC+ESR, that is, adding electroslag remelting process on the basis of conventional smelting, casting or forging steel smelted in open hearth, converter, electric furnace, etc. into electrodes, and the molten electrodes are immersed in the slag pool of the water-cooled mold middle;

[0045] Three-way upsetting and elongating treatment, forging temperature 1235°C, upsetting and elongating in X, Y, and Z directions, upsetting ratio greater than 2, low-temperature forging in the forming stage, temper...

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Abstract

The invention provides a manufacturing method of a high-strength flywheel energy storage rotor. The manufacturing method comprises the following steps of component design and simulation experiment, workpiece treatment, three-way upsetting and drawing-out treatment, post-forging normalizing and tempering treatment and thermal refining. The manufacturing method of the high-strength flywheel energy storage rotor has the beneficial effects that the component design with high hardenability as a target is combined with thermal simulation data, and the core structure and the mechanical property of a forged piece are preliminarily judged; a three-way upsetting and drawing-out process is adopted, and it is guaranteed that the core is compacted and forged thoroughly, and the radial performance is optimal; and a proper quenching medium is selected in combination with simulation data, and rapid and continuous cooling of the core part is ensured, so that an expected structure is obtained to realize mechanical properties.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a manufacturing method of a high-strength flywheel energy storage rotor. Background technique [0002] Flywheel energy storage system is an important branch of green energy development, and it is of great significance to achieve the goal of carbon neutrality. [0003] The flywheel energy storage rotor is the most important component of the flywheel energy storage system, and its quality determines the safety, economy and energy storage efficiency of the entire system. The flywheel rotor requires the mechanical properties of its central part to meet the design specifications. Generally, the yield strength is required to be greater than 1000MPa, and the fatigue life reaches the level of one million times. [0004] In the prior art, from the perspective of alloy steel, the performance of the core of the forging product with a large cross-section is the worst. The yield performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/18C21D1/28C21D1/18C21D8/00C22C38/44C22C38/46C22C38/04H02K7/02
CPCY02E60/16
Inventor 徐文斌于广文袁明董俊濮文超
Owner ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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