与INA轴承套圈不同，超大型轴承属于单机、单人和单件加工。它们是非常随机的，很容易导致尺寸或形状公差过大，例如车削后磨损小、热处理变形过大、收缩过大和收缩不均匀、渗碳垫损坏和处理碰撞损坏。如果按正常工艺加工，这些零件将成为不合格品。经分析，部分不合格品可采取措施予以保存。UnlikeINAbearingrings,super-largebearingsbelongtosinglemachine,singlepersonandsinglepieceprocessing.Theyareveryrandomandcaneasilyleadtoexcessivetolerancesofsizeorshape,suchas***allwearafterturning,excessiveheattreatmentdeformation,excessiveshrinkageandunevenshrinkage,carburizingpaddamageandhandlingcollisiondamage.Ifprocessedaccordingtonormalprocess,thesepartswillbecomeunqualifiedproducts.Afteranalysis,someunqualifiedproductscanbepreservedbymeasures.首先，精缺测量INA轴承套圈每种缺点（不对称型）的尺寸，计算出***小磨削量（成品尺寸偏差时的磨削量）m。然后，运动部件的中xin（沿增加缺点处磨削量的方向），***大偏差为m/2，即缺点处磨削量的相对增加，主要是磨削。Firstly,thedimensionofeachdisadvantage(asymmetrictype)ofINAbearingringsismeasured,andthe***allgrindingquantityof***(grindingquantitywhenfinishedproductsizedeviation)miscalculated.Then,inthedirectionofincreasingthegrindingquantityatthedisadvantage,thelargedeviationof***ism/2,thatis,therelativeincreaseofthegrindingquantityatthedisadvantageismainlygrinding.轴承套圈磨削的设计准则是内径或外径，即磨削滚道前先磨削内（外）径。也就是说，磨削内径时，内滚道缺点的磨削量先相对增加，再强调磨削缺点，以节约废品。当m1大于或等于m时，不能失去正常磨削。根据情况，INA轴承套圈Di1.1节所述的方法可用于保存。Thedesigncriterionofbearingringgrindingisinnerdiameterorouterdiameter,i.e.grindinginner(outer)diameterbeforegrindingraceway.Thatistosay,whengrindinginnerdiameter,thegrindingquantityofinnerracewayshortcomingsfirstincreasesrelatively,thenemphasizesthegrindingshortcomings,inordertos***ewasteproducts.WhenM1isgreaterthanorequaltom,normalgrindingcannotbelost.Dependingonthesituation,themethoddescribedinsectionDi1.1ofINAbearingringscanbeusedforpreservation.一般可分为多偏压磨削、测量、偏差调整和再磨削。缺点磨削后，椭圆可以用普通的磨削方法进行修正。这种方法效率低下，要求操作者具有较高的技术水平。然而，在单机和单件生产中，这种方法具有很高的成功率，不会耽误生产进度。经过几年的实践，效果很好。Generally,itcanbedividedintomulti-biasgrinding,measurement,deviationadjustmentandre-grinding.Afterthedefectgrinding,ellipsecanbecorrectedbyordinarygrindingmethod.Thismethodisinefficientandrequirestheoperatortoh***eahightechnicallevel.However,insinglemachineandsinglepieceproduction,thismethodhasahighsuccessrateandwillnotdelaytheproductionprogress.Afterseveralyearsofpractice,theeffectisverygood.对于尺寸公差超过设计标准的轴承零件，INA轴承套圈可采用化学沉积法进行保存。化学沉积的原理是通过各种化学原料之间的化学反应，在零件表面均匀地生成一定厚度的金属涂层。额外的回火确保金属层的硬度和机械性能与原始零件相同。化学沉积只能在不改变形状公差的情况下增加零件的尺寸。因此，对于尺寸公差过大的零件，化学沉积是一种有笑的补救措施。目前，单侧沉积的***大厚度可达0.1毫米左右。Forbearingpartswhosedimensiontoleranceexceedsthedesignstandard,INAbearingringscanbepreservedbychemicaldepositionmethod.Theprincipleofchemicaldepositionistouniformlygenerateacertainthicknessofmetalcoatingonthesurfaceofpartsthroughchemicalreacti***betweenvariouschemicalrawmaterials.Additionaltemperingensuresthatthehardnessandmechanicalpropertiesofthemetallayerarethesameasthoseoftheoriginalparts.Chemicaldepositioncanonlyincreasethesizeofpartswithoutchangingtheshapetolerance.Therefore,chemicaldepositionisalaughableremedyforpartswithexcessivesizetolerance.Atpresent,thethicknessof***depositedunilaterallycanreachabout0.1mm.INA轴承套圈淬火马氏体和残余奥氏体是不稳定***。在回火过程中，钢的体积因马氏体的fen解而收缩，而钢的体积因残余奥氏体的fen解而膨胀。ThequenchedmartensiteandretainedausteniteofINAbearingringsareunstablestructures.Duringtempering,thevolumeofsteelshrinksduetotheFensolutionofmartensite,whilethevolumeofsteelexpandsduetotheFensolutionofretainedaustenite.该方法对残余奥氏体含量高的厚、重工件，特别是对调心滚子轴承有显著影响。在实际生产中，针对不同规格、尺寸和厚度的零件，制定了不同的回火工艺。在保证INA轴承套圈硬度和变形的前提下，对结构进行quan面改造，使其产生较大的膨胀，相应地增加磨损，从而节约废品。Thismethodhasasignificanteffectonthickandhe***yworkpieceswithhighretainedaustenitecontent,especiallyonself-aligningrollerbearings.Inactualproduction,differenttemperingprocessesareformulatedforpartsofdifferentspecificati***,sizesandthicknesses.OnthepremiseofguaranteeingthehardnessanddeformationofINAbearingrings,theQuansurfaceofthestructureisreformedtoproducelargerexpansionandcorrespondinglyincreasewearandtear,thuss***ingwasteproducts.文章来自：SKF轴承www.wh-Articlefrom:SKFBearingwww.wh-文章来自：INA轴承套圈a-Articlesfrom:INAbearingringa-文章来自：NSK轴承Articlefrom:NSKBearing***：524085168电话：0510-81207777手机：13311666672/13395185757)