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Flywheel rotor and preparation method thereof

A flywheel rotor and rotor technology, applied in the field of energy storage systems, can solve the problem that steel materials cannot take into account the cost and hardenability, etc., and achieve the effects of being conducive to mass production, high hardenability, and consistent core structure

Inactive Publication Date: 2021-12-31
ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of this application is to provide a flywheel rotor and its preparation method to solve the problem that the flywheel rotor in the prior art cannot take into account both cost and hardenability by using steel materials

Method used

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  • Flywheel rotor and preparation method thereof
  • Flywheel rotor and preparation method thereof
  • Flywheel rotor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Electric arc furnace smelting + extra-furnace refining + electroslag remelting is used to prepare energy storage flywheel rotor steel. In terms of mass content, its chemical composition is: C is 0.32%, Si is 1.55%, Mn is 3.10%, and Cr is 1.0%. , Mo is 0.25%, Ni is 0.25%, V is 0.08%, B is 0.0005%, and the balance is Fe and unavoidable impurities. The homogenization temperature of the steel ingot is 1200°C, and the holding time is 8 hours. The ingot heating temperature is 1200°C, the initial forging temperature is 1150°C, the final forging temperature is 880°C, and the forging ratio is 8. Normalize at 900°C, keep warm for 5 hours, and cool in air. Quenching temperature 850°C, holding time 5 hours, air cooling. Tempering temperature 250°C, holding time 8 hours, air cooling.

[0060] The outer diameter of the flywheel rotor is 940mm, and the height is 420mm. Samples are taken at the edge and center of the rotor.

[0061] The actual rotor of Example 1 was dissected, and ...

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Abstract

The invention discloses a flywheel rotor and a preparation method thereof, and relates to the technical field of rotor energy storage. The flywheel rotor is made of high-strength steel, the high-strength steel is subjected to electric arc furnace smelting, external refining, electroslag remelting, controlled forging, normalizing, quenching and tempering, the yield strength ranges from 1150 MPa to 1700 MPa, the room-temperature V-shaped notch impact energy is larger than 27 J, the method is suitable for manufacturing an energy storage disc type flywheel rotor with the outer diameter being 600-2000 mm and the maximum height being smaller than or equal to 600 mm or a cylindrical flywheel rotor with the diameter being smaller than or equal to 1000 mm.

Description

technical field [0001] The present application relates to the technical field of energy storage systems, in particular to a flywheel rotor and a preparation method thereof. Background technique [0002] Flywheel energy storage technology is an advanced physical energy storage technology, which stores energy by the high-speed rotating flywheel rotor under the condition of vacuum magnetic levitation. The flywheel body is composed of a high-speed rotating flywheel and a coaxial motor / generator. Through the conversion between the flywheel rotation and the motor / generator, charging (energy storage process, from electric energy to kinetic energy) and discharge (energy release process, from kinetic energy to electricity). [0003] Compared with the problems of chemical battery energy storage technology, such as limited charging and discharging times, serious environmental pollution, and high working temperature requirements, flywheel energy storage technology has the advantages of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/34C22C38/38C22C38/58C22C38/22C22C38/44C22C38/24C22C38/46C22C38/32C22C38/54C21D1/28C21D1/18C21D8/00F16F15/30
CPCC22C38/02C22C38/34C22C38/38C22C38/58C22C38/22C22C38/44C22C38/24C22C38/46C22C38/32C22C38/54C21D1/28C21D1/18C21D8/005F16F15/30C21D2211/008C21D2211/002C21D2211/001Y02E60/16Y02E70/30
Inventor 顾金才董瀚徐文斌胡春东于广文郭军霞满廷慧
Owner ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING
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