无损检测工艺规程磁粉检验

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topr本event泰thema花gnetic辆parti渔clefr役omget良tingi勾nto.拖8.4E何xamina著tions泽hallb翅econd择ucted吃withs床uffici堆entov尘erlap残康的提升力来确锅定。灵根据经验磁轭阴式磁场强度可引测量它的提升俘力来确定。僵史版磁化方向颈竭肤每一区域应至匀少进行两次分搞别检验。在第择二次检验中，炕磁通线的方向教应大致与第一认次检验区域所燃采用的方向相娇垂直。勺缺受检区域应限漏制在两磁极连讨线的双侧，相筹当甲于罩1/削4等最大磁极间距路的范围内，磁傲极间距每次至出少房有幼1弓英寸和（专2俱5描毫米）的搭接字。雨7铜.钳磁场强度胃7.嫂1为使用专用的碳值钢络/拉铜板磁场指示阿器来校验零件咏表面的磁场强廊度和方向是否露满足要求。如渔果铜板边有清轿晰的磁粉线条拿，则表明磁场华强度是足够的其。决闯8著．检验要求同8.融1踩表面制备述蚁经焊接、轧制年、铸造、锻造锻等加工的零件葬，一般会取得奴满意的效果。惧然而，表面不挑平（不均匀）抵会掩饰缺陷的销显示，则这些样地方要通过打兆磨或机加工进球行表面制备。普陕在磁粉检验之吩前，被检验的脏表面及其附近午至厅少住1撇英寸（钢25mm捆）的区域内应药实干燥的，并欣且没有任何污诚垢、纤维屑、侦锈皮、焊剂和录焊接飞溅、油渠污或其他能妨想碍检验的外来快物。贺录可使用去污剂裂、有机溶剂、什除绣剂、除绣攀液、去漆剂、浙蒸气除油、喷尽沙或超声波清粗洗等方法达到浙清洁的目的。榆动如果在被检验油部件表面存在诉漆层等覆盖物窃，必须进行演桑示实验，使缺捷陷能透过覆盖它层最厚处显示萍出来。使用磁较轭法时，应恨按锋ASM维E趟法规第笔Ⅴ柔卷符第轨7泡章强制性附录券Ⅰ首之要求，验证吵涂层厚度的影藏响。饲8.2禁震除非图纸或其皱他技术文件中匙另有规定，任雾何零件均应在离完工的表面状劣态，或最终机着加工状态，或追最终热处理状用态下进行磁粉齿探伤。虽8.3纷扩零件上的小开泉口、槽或孔，叨应在检验前堵从塞好以防磁粉寿进入。努8.4冲肺检验时应有足碍够的重吗叠地(吨至败少驴10%袄)盾，保证受检零虫件在规定的灵民敏度下能得开到诸100附%弓的履盖。捐NJBST闸Co.,Lt嫌d.婆QCD-01酿4吴Rev.:0球Page:6摇权of8头Title:貌PROCE蹈DUREF话ORMAG争NETIC毙PARTIC以LEEXA贴MINATI妈ON炼(银atlea童st10%肿)toa枕ssure盈100%c令overag资eatt殊heest忽ablish右edsen据sitivi绑ty.做8.5T罚herep也aired撕areas驻hallb全ereex染amined双accor邻dingt绝othe率origin鸽alexa顿minati辜onpro督cedure番.吵检8.6Th获einte傅nsity讲ofthe扇visua陷lligh毅tatt犬hesur淹faceo福fthe讲part/腔workp腐ieceu锋ndergo将ingex极aminat拜ionsh痛allbe骑amin坊imumo邪f50fc童(500l守x).牺9.Ev徒aluati烛onof镇indica嫌tions网andac贷ceptan滋cesta钓ndards选9.1E著valuat结ionof帆indic寒ations质Indic选ations趁will鸣berev述ealed随byret颂ention挺ofma敬gnetic皇parti邻cles.程Allsu恳chind嫌icatio昨nsare丧notn并ecessa祸rilyi些mperfe批ctions纲,howe伏ver,s怠incee披xcessi枪vesur茂facer箩oughne塘ss,ma腿gnetic厌perme缺abilit滨yvari启ations贤(such免asat鸦thee划dgeof敞heat伍affect归edzon着es),e锁tc.,m歌aypro目duces误imilar舍indic蹲ations超.兆Anin芳dicati甚onis旺theev必idence皱ofa哪mechan堆icali图mperfe镰ction.喝Only铅indica炎tions象which叛havea俩nydim婚ension阁great均ertha仅n1/朗16in裕.(席1.6mm践)shal妹lbec室onside滴redre表levant肚.巾a.A末linear富indic突ation蛋isone扯havin怕gale满ngthg升reater棋than打three给times衡thewi镰dth.剧b.A陶rounde油dindi软cation右ison驻eofc妖ircula湿rore逗llipti丸calsh俗apewi糊thal宿enthe精qualt友oorl兰essth播anthr乡eetim磨esthe欠width趋.耳c.An追yques茅tionab再leor档doubtf敏ulind难icatio局nssha年llbe体reexam摄inedt字odete武rmine翁whethe相rorn雕otthe查yare悦releva扑nt.妻d.Br累oadar滚easof淘parti笛cleac昨cumula看tionw币hichm亲ightm狗askin辅dicati析onsfr备omdis织contin设uities教arep棋rohibi训ted,a未ndsuc茧harea揭sshal顽lbec较leaned把andr尺eexami邪ned.示9.2A裙ccepta秘ncest活andard弃s(per絮Appen盖dix6际ofSec船tion对Ⅷ摔Div.1圈)尺These投accep舅tance势standa驴rdssh弦allap酒plyun广lesso牢therm牺orere军strict子ivest或andard墙sare偏specif击iedfo全rspec注ificm寿ateria统lsor万applic远ations腿.墓Alls岂urface妻stob趣eexam思ineds肤hallb蕉efree恼of:炭a.re滑levant胳linea披rindi蓝cation衔s;挥b.re菠levant浇round务edind捐icatio帽nsgre拿atert旅han3/康16in析.(勉4.8mm摘);赖c.fo伏uror倒morer匀elevan赶troun偷dedin护dicati裹onsin番alin透esepa鸦rated刚by1/屑16in亦.(疯1.6mm改)orle永ss,ed脑geto湾edge;狠d.an泄indic职ation君ofan也imperf堆ection墨mayb帆elarg丧ertha建nthe惭imperf亲ection贸that修causes逼it;h鼓owever骗,the毅sizeo利fthe顾indica助tioni唇sthe邀basis蔑forac盖ceptan炸ceeva柳luatio澡n.踢10.D惯emagne户tizati舞on芹When政residu狠almag联netism天inth移epart御could阳inter际ferew勿ithsu弄bseque欲ntpro早cessin懂goru堪sage,泉thepa塑rtsha旧llbe歉demagn膀etize