磷含量对青铜基含油轴承力学性能与摩擦性能的影响.pdf
磷含量对青铜基含油轴承力学性能与摩擦
性能的影响
摘要以青铜作为轴承基体,通过改变磷含量(0~1%,质量分数)和烧结温度,在一定转速和载荷下,测量轴承的摩擦系
数和磨损量,并测定了轴承的开环强度,研究了磷含量对青铜基含油轴承的摩擦性能和力学性能的影响,获得一定工作条件下
轴承配方和烧结工艺参数。结果表明:随着磷含量的增加,含油轴承的磨损量降低,力学性能提高,但磷含量过高时,轴承的
含油率降低并低于轴承最低标准;随着烧结温度的增加,试样力学性能提高,但摩擦因数不稳定。当磷质量分数为0.7%、烧结
温度为650℃时,含油轴承拥有良好的综合性能,开环强度和含油率分别为22MPa和13.52%,摩擦因数稳定,呈最佳烧结
状态。
关键词
青铜;含油轴承;磷含量;力学性能;摩擦性能
Effect
of
phosphorus
content
on
the
mechanical
and
friction
properties
of
oil-impregnated
bronze
bearings
ABSTRACT
Oil-impregnatedbronzebearingswiththedifferentphosphoruscontents(0~1%,massfraction)wereproducedatthe
differentsinteringtemperatures.TostudytheeffectofPcontentonthefrictionandmechanicalpropertiesofthebearings,thefriction
coefficientandwearlossatthecertainspeedandloadweremeasured,andtheopen-loopstrengthofbearingswasexamined.In
addition,theoptimizedbearingcontentandsinteringprocessparametersunderthecertainworkingconditionswereobtained.The
resultsshowthat,withtheincreaseofPcontent,thewearlossofthebearingsreduces,whilethemechanicalperformancesare
improved.However,whenthePcontentisexcessed,theoilcontentreduceswhichislowerthantheminimumstandard.Asthesintering
temperatureincreases,themechanicalpropertiesofthebearingsareimproved,butthefrictioncoefficientisunstable.Theopen-loop
strengthandoilcontentoftheoil-impregnatedbronzebearingsampleswith0.7%Pcontentbymassaftersinteringat650℃are
收稿日期:2021-10-12
第42卷第2期范心怡等:磷含量对青铜基含油轴承力学性能与摩擦性能的影响·201·
22MPaand13.52%,respectively,showingthegoodcomprehensiveperformanceasthestablefrictionfactorandthebestsintering
state.
KEY
WORDS
bronze;oil-impregnatedbearings;phosphoruscontent;mechanicalproperties;frictionproperties
烧结金属含油轴承是最早出现的粉末冶金机械表
1含油轴承化学成分(质量分数)
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