Die Forging Simulation of GCr15Bearing Ring

Pan Guangyong

doi:10.15980/j.tzzz.2018.01.008

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Die Forging Simulation of GCr15Bearing Ring
Vol. 38, Issue 1, Pages: 29-34(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.01.008

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[1]潘光永.GCr15轴承套圈模锻成形工艺模拟研究[J].特种铸造及有色合金,2018,38(01):29-34.

Pan Guangyong. Die Forging Simulation of GCr15Bearing Ring. [J]. Special Casting & Nonferrous Alloys 38(1):29-34(2018)
[1]潘光永.GCr15轴承套圈模锻成形工艺模拟研究[J].特种铸造及有色合金,2018,38(01):29-34. DOI： 10.15980/j.tzzz.2018.01.008.

Pan Guangyong. Die Forging Simulation of GCr15Bearing Ring. [J]. Special Casting & Nonferrous Alloys 38(1):29-34(2018) DOI： 10.15980/j.tzzz.2018.01.008.

摘要

针对轴承套圈用GCr15材料

进行等温恒应变速率压缩试验

分析GCr15材料的高温流变行为和金相组织

并建立GCr15流变应力方程及动态再结晶数学模型;基于DEFORM-3D有限元软件模拟不同热锻成形条件对GCr15轴承套圈微观组织及成形质量的影响。模拟结果表明

在一定变形条件下

锻件内部组织发生动态再结晶

平均晶粒尺寸随着变形量的增大而减小

随着变形温度的升高而变大

随着变形速度的提高而变小;并随着锻造摩擦因数的提高

套圈表面损伤值不断增加。提高模具预热温度

可减小凸模受力

且对轴承套圈外表面组织的动态再结晶有一定影响。

Abstract

The isothermal constant strain rate compression tests were carried out to understand the high temperature deformation rheological behavior and microstructure of GCr15

and the flow stress equation and dynamic recrystallization equation of GCr15 was established.Influences of different hot forging condition on microstructure and forming quality of GCr15 bearing ferrule were analyzed based on DEFORM-3 Dsoftware.The simulated results show that the internal microstructure of the forging bearing ring ferrule is recrystallized under a certain deformation conditions

so that the average grain size is decreased with the increase of the deformation rate

and increased with the increase of the deformation temperature

while it is decreased with the increase of the deformation speed.The damage value of the ring surface is increased with the increase of the friction factor.Through increasing the preheating temperature of the mold

the punch force can be reduced

however

it has some influence on the dynamic recrystallization of the outer surface of the bearing ring.