基本信息
标准名称: | 钛及钛合金产品力学性能试验取样方法 |
英文名称: | Methods of sampling for mechanical properties testing of titanium and titanium alloy products |
中标分类: |
冶金 >>
金属化学分析方法 >>
稀有金属及其合金分析方法 |
ICS分类: |
冶金 >>
有色金属
|
发布部门: | 中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会 |
发布日期: | 2009-04-15 |
实施日期: | 2010-02-01 |
首发日期: | 2009-04-15 |
作废日期: | |
主管部门: | 中国有色金属工业协会 |
提出单位: | 中国有色金属工业协会 |
归口单位: | 全国有色金属标准化技术委员会 |
起草单位: | 宝钛集团有限公司、宝鸡钛业股份有限公司 |
起草人: | 王永梅、冯军宁、黄永光、王红武、李峰丽、李农 |
出版社: | 中国标准出版社 |
出版日期: | 2010-02-01 |
页数: | 12页 |
计划单号: | 20073475-T-610 |
适用范围
本标准规定了钛及钛合金管、棒、板、线材及饼、环材等锻件的力学性能试样的取样位置和试样制备要求等。
本标准适用于钛及钛合金加工产品。
前言
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目录
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引用标准
GB/T2975 钢及钢产品 力学性能试验取样位置及试样制备
所属分类: 冶金 金属化学分析方法 稀有金属及其合金分析方法 冶金 有色金属
【英文标准名称】:StandardTestMethodforMeasuringShrinkagefromMoldDimensionsofMoldedThermosettingPlastics
【原文标准名称】:测量由模制热固塑料的模型尺寸收缩的标准试验方法
【标准号】:ASTMD6289-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.09
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:moldingshrinkage;post-moldingshrinkage;thermosetplastics;Compression-moldedplasticspecimens;Injectionmolding/extrusioncompounds;Molding/extrusioncompounds/materials;Moldingshrinkage;Post-moldingshrinkage;Shrinkage--plastics;Thermosettin
【摘要】:CompressionMolding8212;Incompressionmolding,thedifferencebetweenthedimensionsofamoldandofthemoldedarticleproducedthereinfromagivenmaterialvaryaccordingtothedesignandoperationofthemold.Itisprobablethatshrinkagewillapproachaminimumwheredesignandoperationaresuchthatamaximumofmaterialisforcedsolidlyintothemoldcavityorsomepartofit,orwherethemoldedarticleishardenedtoamaximumwhilestillunderpressure,particularlybycooling.Incontrast,shrinkagesarehigherwherethechargemustflowinthemoldcavitybutdoesnotreceiveandtransmitenoughpressuretobeforcedfirmlyintoallitsrecesses,orwherethemoldedarticleisnotfullyhardenedwhendischarged.Theplasticityofthematerialusedaffectsshrinkageinsofarasitaffectstheretentionandcompressionofthecharge.InjectionMolding8212;Ininjectionmolding,asincompressionmolding,thedifferencesbetweenthedimensionsofthemoldandofthemoldedarticleproducedthereinfromagivenmaterialvaryaccordingtothedesignandoperationofthemold.Thedifferencesvarywiththetypeandsizeofmoldingmachine,thethicknessofmoldedsections,thedegreeanddirectionofflowormovementofmaterialinthemold,thesizeofthenozzle,sprue,runner,andgate,thecycleonwhichthemachineisoperated,thetemperatureofthemold,andthelengthoftimethatfollow-uppressureismaintained.Asinthecaseofcompressionmolding,shrinkageswillapproachaminimumwheredesignandoperationaresuchthatamaximumofmaterialisforcedsolidlyintothemoldcavityandwherethemoldedarticleishardenedtoamaximumwhilestillunderpressureasaresultoftheuseofarunner,sprue,andnozzleofpropersize,alongwithproperdwell.Asincompressionmolding,shrinkagesarehigherwherethechargemustflowinthemoldcavitybutdoesnotreceiveandtransmitenoughpressuretobeforcedfirmlyintoalloftherecessesofthemold.Theplasticityofthematerialusedaffectsshrinkageindirectly,inthatthemorereadilyplasticizedmaterialwillrequirealowermoldingtemperature.TransferMolding8212;Intransfermolding,asincompressionorinjectionmolding,thedifferencebetweenthedimensionsofthemoldandofthemoldedarticleproducedthereinfromagivenmaterialvaryaccordingtothedesignandoperationofthemold.Itisaffectedbythesizeandtemperatureofthepotorcylinderandthepressureonit,aswellasonmoldtemperatureandmoldingcycle.Directionofflowisnotasimportantafactor.MaterialsStandards8212;Alwaysrefertomaterialstandardsforspecialtreatmentpriortomolding,moldingconditionsandspecialhandlingofthetestspecimensaftermolding.Intheeventthematerialstandardisunavailable,contactthemanufacturerfortheserecommendations.Utility8212;Measurementofbatch-to-batchconsistencyininitialshrinkagefrommoldtomoldeddimensionsisusefulforevaluatingthequalityofthermosettingplastics.1.1Thistestmethodisintendedtomeasureshrinkagefrommoldcavitytomoldeddimensionsofthermosettingplasticswhenmoldedbycompression,injection,ortransferunderspecifiedconditions.1.2Thistestmethodprovidesforthemeasurementofshrinkageofthermosettingplasticsfromtheirmoldsbothinitially(within16to72hofmolding)andastheyage(postx2013;shrinkageatelevatedtemperatures).1.3Thismethodwillgivecomparabledatabasedonstandardspecimensandcannotpredictabsolutevaluesinactualmol......
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:4P.;A4
【正文语种】:英语