【英文标准名称】:Steeldieforgings.Tolerancesondimensions.Upsetforgingsmadeonhorizontalforgingmachines
【原文标准名称】:钢模锻.公差和尺寸.水平锻压机器上的镦锻压
【标准号】:BSEN10243-2-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-12-15
【实施或试行日期】:1999-12-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:高度;宽度;非合金钢;工程图;公差(测量);直线度测量;形状;锻件;尺寸;落锤锻;合金钢;设计;长度;孔;缺陷与故障;形状公差;直径;重量;平面度测量;角度公差;热加工;钢;缺陷;表面;厚度;尺寸公差;等级(质量)
【英文主题词】:Alloysteels;Angulartolerances;Defects;Definitions;Design;Diameter;Dimensionaltolerances;Dimensions;Dropforging;Dropforgings;Engineeringdrawings;Flatnessmeasurement;Forgedpieces;Forging;Forgings;Formtolerances;Grades(quality);Height;Holes;Hot-working;Length;Metals;Shape;Steelproducts;Steels;Straightnessmeasurement;Surfaces;Symbols;Thickness;Tolerances(measurement);Unalloyedsteels;Weight(mass);Width
【摘要】:1ThisEuropeanStandardspecifiesthedimensionaltolerancesforsteelupsetforgingsmadeonhorizontalforgingmachines.ThesecondpartofthisEuropeanStandardappliestohotupsetforgings,inthedeliverycondition,madeincarbonandalloysteels.Thetolerancesspecifiedapplytoforgingsnotexceeding250kginmassor2500mmmaximumdimension.Tolerancesforheavierorlayerforgingsaresubjectedtonegotiation.ThisEuropeanStandarddoesnotapplytosteeldropandpressforgings(seeEN10243-1).2ForforgingsproducedinhorizontalforgingmachinesforginggradeFtolerancesonlyareprovided.Thistolerancegradeprovidesanadequatestandardofaccuracyforthemajorityofapplicationsandiscapableofbeingcompliedwithbycommonlyusedforgingequipmentandproductionmethods.ThetablesshowingdimensionaltolerancesarebasedontheR20seriesofpreferrednumbers(seeISO3).AnnexAgivesforinformationsomeexamplesoftheapplicationofthesetolerancesfordifferenttypesofcloseddieforgings.3Anyoccasionalinstancesmaynecessitatetheuseoftoleranceswiderthanthoseindicated,e.g.speciallycomplicateddesignsandsteelshavingparticularlydifficultforgingcharacteristics.Insuchcasesthesestandardtolerancescanformonlyabasisonwhichtoagreemodificationsappropriatetotheparticularcircumstances.4ThisEuropeanStandarddoesnotincluderangesofspecialtolerancescloserthangradeF.Considerationofspecialtolerances,whilstfrequentlyencountered,arehighlyindividual,andvarywidely.Theyarebestdealtwithbyconsultationatthedesignstageandshallbeagreedbetweenthepurchaserandthesupplier.Thisapproachwillensurethatoptimumuseismadeoftheforgingprocessinfulfillingthepurchaser'sspecialrequirementsatthelowestadditionalcost.
【中国标准分类号】:J32
【国际标准分类号】:77_140_85
【页数】:32P.;A4
【正文语种】:英语