JB/T 56100-1999 堆焊焊条 产品质量分等
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来源:标准资料网
基本信息
标准名称: | 堆焊焊条 产品质量分等 |
中标分类: |
机械 >>
加工工艺 >>
焊接与切割 |
替代情况: | JB/T 56100-1994 |
发布日期: | 1999-12-30 |
实施日期: | 2000-06-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
页数: | 13页 |
适用范围
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前言
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引用标准
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所属分类: 机械 加工工艺 焊接与切割
【英文标准名称】:StandardTestMethodforDeterminationofThermalShockResistanceforAdvancedCeramicsbyWaterQuenching
【原文标准名称】:水淬法测定高级陶瓷的耐热冲击强度的标准试验方法
【标准号】:ASTMC1525-2004(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:C28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ceramics;quench;strength;thermalshock;Advancedceramics;Flexuraltesting--ceramics;Quantitativeanalysis/measurement;Quenching;Rapidquenching;Thermalshockmaterials/testing;Waterquenching
【摘要】:Thehightemperaturecapabilitiesofadvancedceramicsareakeyperformancebenefitformanydemandingengineeringapplications.Inmanyofthoseapplications,advancedceramicswillhavetoperformacrossabroadtemperaturerangewithexposuretosuddenchangesintemperatureandheatflux.Thermalshockresistanceoftheceramicmaterialisacriticalfactorindeterminingthedurabilityofthecomponentundertransientthermalconditions.Thistestmethodisusefulformaterialdevelopment,qualityassurance,characterization,andassessmentofdurability.Ithaslimitedvaluefordesigndatageneration,becauseofthelimitationsoftheflexuraltestgeometryindeterminingfundamentaltensileproperties.AppendixX1(followingEN820-3)providesanintroductiontothermalstresses,thermalshock,andcriticalmaterial/geometryfactors.Theappendixalsocontainsamathematicalanalysisofthestressesdevelopedbythermalexpansionundersteadystateandtransientconditions,asdeterminedbymechanicalproperties,thermalcharacteristics,andheattransfereffects.1.1Thistestmethoddescribesthedeterminationoftheresistanceofadvancedceramicstothermalshockbywaterquenching.Themethodbuildsontheexperimentalprincipleofrapidquenchingofatestspecimenatanelevatedtemperatureinawaterbathatroomtemperature.Theeffectofthethermalshockisassessedbymeasuringthereductioninflexuralstrengthproducedbyrapidquenchingoftestspecimensheatedacrossarangeoftemperatures.Foraquantitativemeasurementofthermalshockresistance,acriticaltemperatureintervalisdeterminedbyareductioninthemeanflexuralstrengthofatleast30%.Thetestmethoddoesnotdeterminethermalstressesdevelopedasaresultofasteadystatetemperaturedifferenceswithinaceramicbodyorofthermalexpansionmismatchbetweenjoinedbodies.Thetestmethodisnotintendedtodeterminetheresistanceofaceramicmaterialtorepeatedshocks.Sincethedeterminationofthethermalshockresistanceisperformedbyevaluatingretainedstrength,themethodisnotsuitableforceramiccomponents;however,testspecimenscutfromcomponentsmaybeused.1.2Thetestmethodisintendedprimarilyfordensemonolithicceramics,butmayalsobeapplicabletocertaincompositessuchaswhisker-orparticulate-reinforcedceramicmatrixcompositesthataremacroscopicallyhomogeneous.1.3ValuesexpressedinthisstandardtestmethodareinaccordancewiththeInternationalSystemofUnits(SI)andStandardIEEE/ASTMSI10.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q32
【国际标准分类号】:
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Medicalinformatics.Categoricalstructuresofsystemsofconcepts.Modelforrepresentationofsemantics
【原文标准名称】:医疗信息学.概念体系分类结构.语义学表述模型
【标准号】:DDENV12264-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-11-15
【实施或试行日期】:1998-11-15
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:分类系统;通信规程;信息交流;数据表示;设计;代码表示;合格;诊断(医学);医疗卫生事业;数据处理;电子数据交换;数据传送;文件结构(计算机);数据分类;计算机应用;语义学;编码(数据转换);数据组织;计算机软件;术语;传播方式;医疗信息;数据布置
【英文主题词】:
【摘要】:
【中国标准分类号】:C07
【国际标准分类号】:35_240_80
【页数】:58P;A4
【正文语种】:英语