干网知识培训ppt课件.ppt

ByWernerThommenProductmanagerdryersAndyZhouTechnicalservice DryerFabrics干网 Typesofyarnsandmaterials 原材料种类 Dryendoperation 干燥工艺 Definitions 定义 DryerFabricRequirements 干网要求 Designs Features 设计与特性 Installation Tension Guiding 安装 张力与定位 Summary Questions 总结和问题 DryerFabricCourseOutline提纲 Australia 澳大利亚 Bangladesh 孟加拉国 China 中国 India 印度 Indonesia 印尼 Japan 日本 Korea 韩国 Malaysia 马来西亚 NewZealand 新西兰 Pakistan 巴基斯坦 Philippines 菲律宾 Taiwan 台湾 Thailand 泰国 Vietnam 越南 Locations 位置NorthAmerica 北美USA 7plants美国 7个工厂Canada 3plants加拿大 3个工厂BelgiumCzechRepublicAsia 亚洲China中国AstenJohnsonsalesofficeSingapore Typesofyarnsandmaterials原材料种类 YarnTypes线的种类 SpunYarn细纱Monofilament单丝RoundMonofilament圆形单丝ShapedMonofilament其他形状单丝 RegularRoundMonofilament常用圆形单丝 ShapedMonofilament其他形状单丝 RibbonShapedMonofilament带状单丝 YarnMaterials线的材料 Polyester聚脂Polyamides聚酰胺PPS抗磨损聚脂PEEK耐高温聚脂 Polyester聚脂 KeyProperties 主要特性Excellentdimensionalstability尺寸稳定Excellenttensilestrength良好的抗张强度Excellentresistancetoabrasion良好的抗磨损性Chemicallyresistanttoacids耐酸性Fairresistancetoalkalis抗碱性Moderateresistancetohydrolysis中等耐水解性 DRY ENDOPERATION干燥工艺 FunctionsofaDryerFabric干网的功能 Supportssheetthroughdryersection 纸张的支撑 fullsupportthroughUno run SingleTiersectionsImprovesheat masstransfer 提高热与质量传递 bettersheetcontactondryercan SomeDefinitions定义 Definition 定义Volumeofairperunitareathatpassesthroughafabricunderapressuredifferentialof1 2 ofwatercolumn 在1 2 水柱压力差异下通过网的空气数量单位 Permeability透气性 HydrolysisDefinition水解 Adoubledecompositionreactioninvolvingtheadditionoftheelementsofwaterandtheformationofanacidandabase anacidandanalcohol oranacidandphenol resultinginmajortensileloss 一种包含了水分子的酸合物 或酸和酒精 或酸和苯酚的复分解反应 其结果是伸长性的丢失 Hydrolysis水解 Yarndegradationcausedbyacombinationofhighheatandmoisture bothheat moisturemustbepresent 水解导致线的退化是由高温与湿气引起 Fabricgets rotten usuallystartingontheedges 网的腐化往往是从边上开始 Mustbedimensionallystable 尺寸稳定Providegoodrunnability提供良好的运转性Musthaveasmoothsurfaceandseam光滑的表面和接缝Mustbeofadequatestrength足够的拉力Contaminationresistantandeasycleaning抗污及易清洁Haveanevenperm profile透气性的一致性 DryerFabricRequirements干网要求 DryerFabricRequirements Havetherightair permeability正确的透气值Air perminrelationwith 透气性与以下相关Dryingcapacity干燥能力Sheetstability纸张稳定性 DryerFabricRequirements Achieveareasonablelifetime 达到合理的寿命Factorsaffectingthelifetime 影响寿命的因素Contamination 污染 Hydrolysis 水解 Chemicaldegradation 化学退化 Abrasion 磨损 DryerFabricDesigns Features设计与特性 MonoTierConcept FeaturesandBenefitsMonoTier概念 特性与优点 ContactArea MonoTier BalancedWeave SameContactareaasfabricExceptionalStrengthNon marking MonoTierConcept PinSeam Fabricstrengthcomparison Pinseam ProductManagement18 10 2006 MonoTier StreamlineCoilSeam SeamDesigns接缝设计 Spiralfabric ExtrafineSpiraldesignForhighspeedmachinesForsingletier UnoRunandconventionalpositionsLowcaliper1 6mmHighcontactarea30 EasytocleanPermsteps110 150 200 250cfm Bi coloredseamspiral SpiralFine TheMonoTIeradvantageof2independentwarpsystems Abrasion FABRICINSTALLATION网的安装 INSTALLINGNEWFABRICWITHOLDFABRIC用旧网安装新网 USINGLEAD ONHARNESS TYINGGUIDEPADDLE FabricInstallation Theimportantsteps 重要步骤 EnsureallIsolationsareinplace隔离装置到位Centertheguideroll导向居中Secureguidepalm安全Alignfabric调整 FabricInstallation Theimportantsteps cont d 6 Seaming接缝Startatguidepalmside 从导向端开始AlignMarks调整标记Passthepintletroughtheseamchannel 穿连接线UsetheSeamingassisttominimizetension用接缝辅助使张力最小化Whenpullingthewire doitslowlytoavoidfrictionheat 慢拉以防止摩擦热量的产生Finishbothendsasdemonstrated 7 BringFabricuptoTensionGradually慢慢加大张力Anewfabricshouldstartwithlowtension say1 0kN m inordertoalignitonthemachine Increasegraduallywhenthefabricrunsstraight FabricTension张力 Advantages 优点Improvesdryingefficiencybysqueezingairoutbetweenthewebandthedryer Forcespaperintocloseandconstantcontactwithsteamheatedcylindersincreasingheattransfer Machinespeedcanbeincreased steamconsumptiondecreasedresultinginreducedoperatingcosts FabricTension Disadvantages 缺点Shortenedfabriclifedueto Wearfrompittedrolls overstretching weakeningBearingwear driveloadincrease Rolldeflection fabricdistortion CMDpermeabilityvariation speedvariationbetweencenterandedges Sheetmarksfromfabricweavepattern Recommended 推荐3 4kN monnewmachinesFollowmanufacturersspecifications FabricTension FabricCleaning网的清洁 Showertypes冲淋方式Lowpressurechemicalshower rollsideoffabric intonipoffirstreturnroll Lowpressurerinseshower papersideoffabric endofreturnrun HPcleaning rinsingshower papersideoffabric perpendiculartofabric endofreturnrun FabricCleaning CleaningProcedure 清洁步骤Ensurecansarecooledtoavoidthermalshock 确保已经冷却Crawlspeed 爬行速度Warmwateronshowers 喷淋水升温Dilutecleaningsolution 稀释清洁剂Keepfabricswet 使网湿润Followrecommendedcleaningtime 根据建议清洁时间 Thoroughlyrinsefabricwithfreshwater 用清水彻底冲洗网面 FabricCleaning Advantages 优点Consistentdryerperformance 网的可靠性Improvedsheetprofile 提高纸张质量Betterpocketventilation Betterfabriclife 延长使用寿命Reducedsteamusage 降低蒸汽用量Lowerenergycost 降低能源成本 ChangeinPermeability透气性的改变 FabricCleaning Thereisnoquickandeasyanswertothisquestion dryerfabricsshouldbeinspectedatregularintervals both 这里没有直接的回答 干网需要经常性的定期检查 DuringShuts and关机时和WhileRunning运转时 FabricInspection Removal网的检查 取下 DuringShuts关机时 FabricInspection检查 Shutdown 关机时Inspectedges检查两边Inspectseam检查接缝Inspectguidingaction检查导向Inspectstretchroll检查张力辊Inspectfabricbodyfortears cuts etc 检查网面磨损等 RegularFabricEvaluations网的评估 Edgeravelling damage 边的损坏Excessiveguidepaddleforce过大的导向翼的拉力Fabricrubbingagainstobject s 网与物体的摩擦 RegularFabricE