SAE J157 Oil-Tempered Chromium--Silicon Alloy Steel Wire and Springs (Cancelled Jun 1998)

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Product Code:SAE J157
Title:Oil-Tempered Chromium--Silicon Alloy Steel Wire and Springs (Cancelled Jun 1998)
Issuing Committee:Metals Technical Executive Steering Committee
Scope:This SAE Recommended Practice covers the mechanical and chemical requirements of oil-tempered chromium silicon alloy steel wire used for the manufacture of springs requiring resistance to set when used at moderately elevated temperatures. It also covers the processing requirements of springs fabricated from this wire.
【英文标准名称】:Textileglassreinforcedplastics;determinationofvoidcontent;lossonignition,mechanicaldisintegrationandstatisticalcountingmethods
【原文标准名称】:玻璃纤维增强塑料孔隙率的测定烧失量、机械粉碎和静态计数法
【标准号】:ISO7822-1990
【标准状态】:现行
【国别】:国际
【发布日期】:1990-09
【实施或试行日期】:1990-09-01
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:玻璃织物;气孔;数量密度;试验;塑料
【英文主题词】:Annealinglosses;Blowholes;Compositematerials;Deterioration;Determination;Glass-fibrereinforcedplastics;Ignition-losstests;Interpretations;Numberdensity;Plastics;Testing;Textileglassfibres;Wovenglassfibres
【摘要】:ThisInternationalStandardspecifiesthreemethodsforthedeterminationofthevoidcontentoftextileglassreinforcedplasticsorcomposites,ofwhichtheconstituentsareofasolidnature.1MethodA-LossonignitionThismethodisapplicabletocompositesforwhichtheeffectsofthelossonignitiontestonthematerialsareknown.Mostmatrixresinsandtextileglassfibrereinforcementsfallintothisclass.Themethodisnotapplicabletocompositesforwhichtheef-fectsofthelossonignitiontestontheresin,thereinforcement,andanyfillersareunknown.Thismayincludesiliconeresins,whichdonotburnoffcompletely,andfillersconsistingofox-ides,carbonates,etc.,whichmaygainorloseweight.Notethatseparateweightlosstestsonindividualmaterialswillusually,butnotnecessarily,givethesameresultaswhenallthematerialsarecombined.Theaccuracyofthemethodis±2,5%byvolume.2MethodB-MechanicaldisintegrationThismethodisapplicableifthecompositecanbedisintegratedinsuchaway,forexamplebycrushinginapress,thatalltheenclosedvoidsareconnectedwiththeoutsideofthecom-positematerial.Themethodisdestructiveandhaslimitedap-plicationifthematrixmaterialshowsductilebehaviourundercompression,unlessitcanbemademorebrittleinanartificialway(forexamplebycooling).Themethodisespeciallysuitablewhenthedensitiesofthecon-stituentmaterialsarenotknownornotdeterminable.Themethodneglectstheinfluenceofanyvolatileconstituentsthatcouldevaporateduringandafterdisintegration.Inthisconnection,theconditioningshallbechosenwithcare.Themethodalsodoesnottakeintoaccountanycutorexposedvoidsatthesurfaceofthesample.Theaccuracyofthemethodis±1%byvolume.3MethodC-StatisticalcountingThismethodisapplicabletocompositeshavingavoidcontentlessthanorequalto1%byvolume.
【中国标准分类号】:G31
【国际标准分类号】:83_120
【页数】:8P;A4
【正文语种】:英语


基本信息
标准名称:脱毒草莓种苗病毒检测技术规程
英文名称:Rules for virus detection of virus-free seedling strawberries
中标分类: 农业、林业 >> 植物保护 >> 植物保护综合
发布部门:中华人民共和国农业部
发布日期:2000-09-22
实施日期:2000-12-01
首发日期:
作废日期:
提出单位:中华人民共和国农业部
起草单位:农业部植物脱毒种苗质量监督检验测试中心(济南)、山东省植物保护总站
起草人:华崇钊、商明清、孙作文、李明立、徐鲁、杨勤民
出版社:中国标准出版社
出版日期:2004-04-17
页数:3页
书号:155066.2-13392
适用范围

本标准规定了脱毒草莓种苗的病毒检测方法和操作规程。
本标准适用于脱毒草莓母本株、组培苗及脱毒草莓种苗的病毒检测。

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所属分类: 农业 林业 植物保护 植物保护综合