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1、室内花太多当心“缺氧”大型观叶植物不超过三盆中国园林网5月31日消息：养花自然是件好事，既净化空气，又有观赏价值。但家中养花多了，却藏着众多的危害。来自北京市疾病预防控制中心的分析报告显示，家中室内养花数量不要太多。通常在１２－１６平方米的空间内，大型观叶植物不要超过三盆。因为室内花多，味浓，有人会感到空气中"缺氧"，导致胸闷、憋气、呼吸困难；花粉和香味的刺激能诱发哮喘、咽炎、过敏性鼻炎、咳嗽等；花草挥发的异味、怪味使人烦躁、头晕、恶心、头痛；触碰植株可能会引发皮肤局部红肿、疼痛、发热、瘙痒，重者休克甚至威胁生命。25Cr-13Nitypeorawelding
2、materialwithhighnickelcontent.Lowtemperaturesteels,austeniticstainlesssteelandheat-resistantcorrosion-resistanthighalloysteelsandausteniticandnon-austenitedissimilarsteelweldedjointsshallcomplywiththefollowingrequirements:toensurepenetrationandfusionundergoodconditions,lowcurrent,sh
3、ort-arc,weldingspeedandmuchfasterweldingprocessandinterpasstemperatureshouldbecontrolled.Highcorrosionresistanceperformanceofdouble-sidedweldedwelds,weldedlayerincontactwithcorrosivemediafinallywelded.Lowtemperaturesteelwelding,suitableforthesurfaceoftheweldbeadannealing.Check6.6.16
4、.6weldinginspectionbeforeweldingmaterialandweldingmaterials,mustbecarriedoutaccordingtostandardacceptance,unqualifiedpersonsmaybeused.Groupbeforethedimensionsofvariouspartsofthemainstructure,Groovesizes,andgroovedsurfaceforinspection.WeldingGrooveandGrooveonbothsidesshouldbecheckedb
5、eforethecleaningquality.Checktheweldingbeforeweldingconditionsareconsistentwiththeprescribedconditions,andweldingequipment.Thedryingandcleaningofweldingmaterialstoconfirmthatitmeetstherequirements.6.6.2intermediateweldinginspectiontackweldingaftertheskullshouldbeclearedcheckstoweldi
6、ngthedefectsfoundshallberemovedbeforetheycan.Multi-layerweldingweldingaftertheeachfloorshouldimmediatelycleanthelayers,andVisualinspection,founddefectsinweldedtoeliminatebeforetheycanproceedtothenextlevel.Tointerrupttheweldingseam,shouldbecleanedandcheckedbeforecontinuingtoweldtoeli
7、minateweldingdefectsfoundbytherear.6.6.3checkafterweldingseamsshallbeweldedendsimmediatelyaftertheremovalofslagskin,splash,cleanweldandweldinspection.Profilesshouldshapeformingbeautiful,notundercut,cracked,incompletefusion,blowhole,slag,splashandotherdefects.Weldreinforcementshould(
8、来源：新华网)25Cr-13Nityp
