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Method for producing wheel made of austempered ductile iron (ADI) material

A production method, wheel technology, applied in furnaces, heat treatment equipment, manufacturing tools, etc.

Active Publication Date: 2012-07-11
扬州华铁机电集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a production method of ADI (Rare Earth Aubicine Ductile Iron) wheels with superior performance, which overcomes the wear resistance and noise of the current cast steel wheels and rolled steel wheels and cannot meet the service requirements.

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  • Method for producing wheel made of austempered ductile iron (ADI) material
  • Method for producing wheel made of austempered ductile iron (ADI) material
  • Method for producing wheel made of austempered ductile iron (ADI) material

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Experimental program
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Effect test

Embodiment Construction

[0015] 1. Production steps:

[0016] 1. Cast high-quality ADI material wheel billets:

[0017] Select synthetic cast iron or high-purity nodular iron pig iron with carburized scrap steel as the main metal material for the production of the ADI (rare earth Aubey ductile iron) material wheel, strictly control the addition of alloying elements; melt molten iron in an intermediate frequency electric furnace, and blow argon Purify molten iron, take it out of the furnace at 1480-1560°C, and adopt spheroidization treatment and secondary inoculation treatment.

[0018] Addition of alloying elements (%)

[0019] C Si mn P S Mg Re (cerium Ce + yttrium Y) 3.1-3.9 2.0-3.0 ＜0.31 ＜0.03 ＜0.02 0.039-0.062 ≥0.02

[0020] 2. Analysis: The number of graphite balls of the formed ADI (rare earth Aubey ductile iron) material wheel castings is spheroidized grade 1-4 of GB9441-88; the graphite size is no thicker than GB9441-88 grade 5; the matrix structure The total...

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Abstract

The invention discloses a method for producing a wheel made of an austempered ductile iron (ADI) material, and relates to metal materials, in particular to an ADI rail transit wheel and a production method thereof. The method comprises the following steps of: pouring an ADI wheel casting blank, performing rough machining on the wheel casting blank, performing isothermal quenching, performing shot blasting, and performing finish machining. Surface strengthening can be realized through shot blasting, and the problem that the wear resistance and noise of a cast steel wheel and a rolled steel wheel cannot meet the service requirements at present is solved.

Description

technical field [0001] The invention relates to metal materials, in particular to an ADI (Rare Earth Aubicine Ductile Iron) rail transit wheel and a production method. Background technique [0002] In the prior art, the rail traffic wheel is one of the key parts of the train, and it is called the three major safety components of the rail traffic together with the railway rail and the axle. At present, steel rolling wheels or cast steel wheels are being used both at home and abroad. The friction between the steel wheel and the rail does not match, it is not wear-resistant, it is noisy, it is not environmentally friendly, and its safety performance is poor. Various countries have developed and produced new materials for train wheels to improve their anti-fatigue and anti-wear performance, while reducing noise during operation. [0003] Rolled steel wheels made of steel ingots generally undergo one or several times of heating and multiple rollings. Manufacturing rolled steel w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/04C22C33/08C21D1/20C21D9/34C21D7/06B23P15/00
Inventor 徐志富臧权同王克宇徐帅
Owner 扬州华铁机电集团有限公司
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