MIL-HDBK-506 (NOTICE 1), DEPARTMENT OF DEFENSE HANDBOOK: PROCESS FOR COATING, PACK CEMENTATION, CHROME ALUMINID (10 APR 1998)., MIL-HDBK-506, dated 10 April 1998, has been reviewed and determined to be valid for use in acquisition.
基本信息
| 标准名称： | 工程结构用中、高强度不锈钢铸件 |
| 英文名称： | Medium and high strength stainless steel castings for engineering structure purposes |
| 中标分类： |
机械 >>
加工工艺 >>
铸造 |
| ICS分类： |
冶金 >>
钢铁产品 >>
钢铁铸件
|
| 替代情况： | 被GB/T 6967-2009代替 |
| 发布部门： | 国家标准化管理委员会 |
| 发布日期： | 1986-01-01 |
| 实施日期： | 1987-07-01 |
| 首发日期： | 1986-11-01 |
| 作废日期： | 2009-09-01 |
| 主管部门： | 国家标准化管理委员会 |
| 提出单位： | 机械工业部 |
| 归口单位： | 全国铸造标准化技术委员会 |
| 起草单位： | 沈阳铸造所 |
| 起草人： | 张仲秋、倪宜升、张晓鹏、冯宝全、冯秀艳 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1987-07-01 |
| 页数： | 6页 |
适用范围
本标准所规定的铸造马氏体不锈钢是以力学性能为其主要选用和验收依据。
前言
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目录
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引用标准
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所属分类： 机械 加工工艺 铸造 冶金 钢铁产品 钢铁铸件
【英文标准名称】:StandardPracticeforElectromagnetic(Eddy-Current)ExaminationofFerromagneticCylindricalBarProductAbovetheCurieTemperature
【原文标准名称】:居里温度以上铁磁圆柱棒产品的电磁(涡流)检验
【标准号】:ASTME1312-1999(2004)e1
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:E07.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:涡流试验;试验;材料试验
【英文主题词】:artificialdiscontinuity;curietemperature;electricaltransientnoise;electronicallygeneratedsignal;encirclingcoil;ferromagneticcylindricalbar;fluxchange;in-line-eddy-currentexamination;magneticorelectrostaticshield;phase;sensorcoil;signalamplitude;suppressioncircuit;systemreliability;transportmechanism
【摘要】:Thepurposeofthispracticeistodescribeaprocedureforin-line-eddy-currentexaminationofhotcylindricalbarsintherangeofdiameterslistedin1.2forlargeandrepetitivediscontinuitiesthatmayformduringprocessing.Thediscontinuitiesinbarproductcapableofbeingdetectedbytheelectromagneticmethodarelistedin1.3.1.Themethodiscapableofdetectingsurfaceandsomesubsurfacediscontinuitiesthataretypicallyintheorderof0.030in.[0.75mm]anddeeper,butsomeshallowerdiscontinuitiesmightalsobefound.Discontinuitiesthatarenarrowanddeep,butshortinlength,arereadilydetectablebybothprobeandencirclingcoilsbecausetheycauseabruptfluxchanges.Surfaceandsubsurfacediscontinuities(iftheelectromagneticfrequencyprovidessufficienteffectivedepthofpenetration)canbedetectedbythismethod.5.3.1Discontinuitiessuchasscratchesorseamsthatarecontinuousanduniformforthefulllengthofcutlengthbarsorextendforextensivelineardistancesincoiledproductmaynotalwaysbedetectedwhenencirclingcoilsareused.Thesearemoredetectablewithprobecoilsbyinterceptingthediscontinuityintheirrotationaroundthecircumference.5.3.2Theorientationandtypeofcoilareimportantparametersincoildesignbecausetheyinfluencethedetectabilityofdiscontinuities.Theeddycurrentmethodissensitivetometallurgicalvariationsthatoccurasaresultofprocessing,thusallreceivedsignalsabovethealarmlevelarenotnecessarilyindicativeofdefectiveproduct.1.1Thispracticecoversproceduresforeddy-currentexaminationofhotferromagneticbarsabovetheCurietemperaturewheretheproductisessentiallynonmagnetic,butbelow2100F[1149C].1.2Thispracticeisintendedforuseonbarproductshavingdiametersof1/2in.[12.7mm]to8in.[203mm]atlinearthroughputspeedsupto1200ft/min[366m/min].Largerorsmallerdiametersmaybeexaminedbyagreementbetweentheusingparties.1.3Thepurposeofthispracticeistoprovideaprocedureforin-lineeddy-currentexaminationofbarsduringprocessingforthedetectionofmajororgrosssurfacediscontinuities.1.3.1Thetypesofdiscontinuitiescapableofbeingdetectedarecommonlyreferredtoas:slivers,laps,seams,roll-ins(scale,dross,andsoforth),andmechanicaldamagesuchasscratches,scores,orindentations.1.4Thispracticedoesnotestablishacceptancecriteria.Theymustbespecifiedbyagreementbetweentheusingparties.1.5Thispracticedoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthispracticetoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H40
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】: