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A kind of anti-lost-round wheel steel, wheel and preparation method of wheel

A wheel steel and wheel technology, which is applied in the field of rail transit wheels and their preparation, can solve problems such as wear and troubling the operation of subway vehicles, achieve the effects of improving hardenability, prolonging the mileage and service life of turning repairs, and ensuring uniformity

Active Publication Date: 2021-08-03
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the end of 2016 to the present, Guangzhou, Suzhou, Nanning and other subway companies have successively reported that the phenomenon of 8-9 polygonal wear is common in the use of subway wheels, and it is becoming more and more prominent, which seriously plagues the operation of subway vehicles.
This plan is a good exploration of rail transit wheels and their preparation methods, but there is still room for further improvement, and the research on rail transit wheels and their preparation methods in the industry has never stopped

Method used

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  • A kind of anti-lost-round wheel steel, wheel and preparation method of wheel
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  • A kind of anti-lost-round wheel steel, wheel and preparation method of wheel

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Experimental program
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Effect test

Embodiment 1

[0043] An anti-lost-round wheel steel in this embodiment includes the following components in weight percentage: C: 0.56%, Si: 0.25%, Mn: 0.70%, Cr: 0.20%, Ni: 0.10%, P: 0.008%, S: 0.008%, the rest is Fe and unavoidable impurity elements. From the perspective of the influence of alloying elements on properties, in order to obtain high strength and hardness properties and high plastic properties, composite microalloying should be implemented. Therefore, the present invention focuses on designing the contents of Si, Mn, Cr and Ni in the wheel steel. The metallographic structure of the wheel steel in this embodiment is ferrite+pearlite.

[0044] The anti-lost-round wheel of this embodiment is prepared by using the above-mentioned anti-lost-round wheel steel. Such as figure 1 , 2 As shown, the metallographic structure of the wheel prepared in this embodiment is basically the same as that of the comparative example (ER9 wheel), both of which are fine pearlite + a small amount o...

Embodiment 2

[0067] A kind of anti-lost round wheel steel of this embodiment is basically the same as that of Embodiment 1, the differences are: C: 0.60%, Si: 0.35%, Mn: 0.80%, Cr: 0.25%, Ni: 0.20% , P: 0.007%, S: 0.002%, and the rest are Fe and unavoidable impurity elements.

[0068] The anti-lost-round wheel of this embodiment is prepared by using the above-mentioned anti-lost-round wheel steel. Such as figure 1 , 2 As shown, the metallographic structure of the wheel prepared in this embodiment is basically the same as that of the comparative example (ER9 wheel), both of which are fine pearlite + a small amount of ferrite. For comparative ER9 wheels.

[0069] The preparation method of an anti-lost-round wheel in this embodiment, its preparation process is basically the same as that of Embodiment 1, the difference is that the electric furnace steelmaking process in this embodiment refers to adding raw materials into an electric furnace for smelting, when molten steel When the temperatur...

Embodiment 3

[0074] A kind of anti-lost round wheel steel of this embodiment is basically the same as that of Embodiment 1, the difference is: C: 0.58%, Si: 0.30%, Mn: 0.75%, Cr: 0.23%, Ni: 0.15% , P: 0.006%, S: 0.006%, and the rest are Fe and unavoidable impurity elements.

[0075] The anti-lost-round wheel of this embodiment is prepared by using the above-mentioned anti-lost-round wheel steel. Such as figure 1 , 2 As shown, the metallographic structure of the wheel prepared in this embodiment is basically the same as that of the comparative example (ER9 wheel), both of which are fine pearlite + a small amount of ferrite. For comparative ER9 wheels.

[0076] The preparation method of an anti-lost-round wheel in this embodiment, its preparation process is basically the same as that of Embodiment 1, the difference is that the electric furnace steelmaking process in this embodiment refers to adding raw materials into an electric furnace for smelting, when molten steel When the temperatur...

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Abstract

The invention discloses an anti-lost-round wheel steel, a wheel and a preparation method for the wheel, and belongs to the technical field of rail transit wheels and preparation methods thereof. The present invention includes the following components by weight percentage: C: 0.56%-0.60%, Si: 0.25%-0.35%, Mn: 0.70%-0.80%, Cr: 0.20%-0.25%, Ni: 0.10%-0.20% , P≤0.008%, S≤0.008%, and the rest are Fe and unavoidable impurity elements. The purpose of the present invention is to overcome the disadvantages of rail transit wheels that are prone to out-of-roundness in the prior art, and provide an anti-out-of-round wheel steel, a wheel and a preparation method for the wheel, which can significantly improve the hardness and circumferential hardness uniformity of the wheel , which is beneficial to reduce the probability of out-of-roundness of the wheel and prolong the repair mileage and service life of the wheel.

Description

technical field [0001] The invention relates to the technical field of a rail transit wheel and a preparation method thereof, and more specifically relates to an anti-lost-round wheel steel, a wheel and a preparation method of the wheel. Background technique [0002] In recent years, rail transit wheel out-of-round has become a prominent and common problem in the operation of high-speed rail, ordinary passenger and freight vehicles, and urban rail vehicles. Out-of-round rail transit wheels will increase the vibration and noise of the vehicle, affect the running quality of the vehicle, and even cause damage to other parts of the vehicle and track components due to resonance, directly posing a threat to driving safety. [0003] In the 1990s, during the operation of German ICE high-speed trains, it was found that harmonic wear (later called polygonal wear) appeared in the rolling circle of the wheel. According to the survey statistics, the overall wheel circumference is mainly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/18C21D1/667C21D6/00C21D9/34C22C33/04C22C38/02C22C38/04C22C38/40B23P15/00B60B17/00
CPCB23P15/00B23P2700/50B60B17/00C21D1/18C21D1/667C21D6/004C21D6/005C21D6/008C21D9/34C21D2211/005C21D2211/009C22C33/04C22C38/002C22C38/02C22C38/04C22C38/40
Inventor 宫彦华姚三成陈灵通桂兴亮徐康王志刚陈刚肖峰江波高伟
Owner MAANSHAN IRON & STEEL CO LTD