70-电渣压力焊作业指导书

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70-电渣压力焊作业指导书中铁四局集团新建海南西环铁路XHZQ-4标项目经理部areformulated,detailedprovisionstoengineeringprotectionoffinishedandsemi-finishedproducts.Finishedandsemi-finishedproductstobestoppedfordamageandeducationand,ifnecessary,siteleaderholdspartiesandparty'sconstructionteamleaderandtechniciansresponsible,finedandpostedbyeducatingemployees.2,scientificandreasonablearrangementsshouldbestrictlyinaccordancewithoperatingprocedureslineshoistingconstructionhoistingsequencetopreventfallsfromaheight.Treeplantingtreesupportsthenoteimmediatelyafterwork,fixedplant,preventthemfrombeingblownover.Crossshouldbeavoidedintheconstructionjobleadtoproductdamage.Notfireworkinginthecablearea,electricity,firenearweldingoperationsshallbeprotectedandsmash-proofmeasures.3,wellbeforetheconstructiondrawingdesignandconstructiontechnologytogivethelow-downandconstructiondesigndrawingenvironmentwellbeforeconstructionworkandworkconstructiontechnologytogivethelow-down,preventsreworkduetoworkfineordamagetofinishedproduct.Shouldinvestigatebeforeconstructionembeddedfacilitiesandthesurroundingenvironmentand,ifnecessary,adopteffectivemeasuresofprotection,isolation.4,attentionschedulecrossinfavouroffinishedandsemi-finishedproductstoprotectjobs.5,protectionandisolationmeasurestakenduringtheconstructionprocess.Constructionsite新建海南西环铁路XHZQ-4标段电渣压力焊作业指导书编号:受控号:编制:复核:审核:批准:有效状态:中铁四局集团新建海南西环铁路XHZQ-4标项目经理部二0一三年十一月中铁四局集团新建海南西环铁路XHZQ-4标项目经理部作业指导书areformulated,detailedprovisionstoengineeringprotectionoffinishedandsemi-finishedproducts.Finishedandsemi-finishedproductstobestoppedfordamageandeducationand,ifnecessary,siteleaderholdspartiesandparty'sconstructionteamleaderandtechniciansresponsible,finedandpostedbyeducatingemployees.2,scientificandreasonablearrangementsshouldbestrictlyinaccordancewithoperatingprocedureslineshoistingconstructionhoistingsequencetopreventfallsfromaheight.Treeplantingtreesupportsthenoteimmediatelyafterwork,fixedplant,preventthemfrombeingblownover.Crossshouldbeavoidedintheconstructionjobleadtoproductdamage.Notfireworkinginthecablearea,electricity,firenearweldingoperationsshallbeprotectedandsmash-proofmeasures.3,wellbeforetheconstructiondrawingdesignandconstructiontechnologytogivethelow-downandconstructiondesigndrawingenvironmentwellbeforeconstructionworkandworkconstructiontechnologytogivethelow-down,preventsreworkduetoworkfineordamagetofinishedproduct.Shouldinvestigatebeforeconstructionembeddedfacilitiesandthesurroundingenvironmentand,ifnecessary,adopteffectivemeasuresofprotection,isolation.4,attentionschedulecrossinfavouroffinishedandsemi-finishedproductstoprotectjobs.5,protectionandisolationmeasurestakenduringtheconstructionprocess.Constructionsite目录1、编制目的..............................................................................................02、适用范围..............................................................................................03、编制依据..............................................................................................04、职责.......................................................................................................05、机械材料..............................................................................................16、施工方法及工艺..................................................................................27、验收标准..............................................................................................58、安全保证措施......................................................................................99、质量保证措施......................................................................................910、应急措施..........................................................................................10中铁四局集团新建海南西环铁路XHZQ-4标项目经理部0新建海南西环铁路XHZQ-4标电渣压力焊施工作业指导书1、编制目的明确电渣压力焊施工作业的工艺流程、操作要点和相应的工艺标准,指导、规范电渣压力焊施工。2、适用范围本作业指导书适用于新建海南西环铁路XHZQ-4标中钢筋级别为HPB400和HPB335,直径为14㎜~25㎜的焊接。3、编制依据《新建时速200公里客货共线铁路工程施工质量验收暂行标准》《钢筋焊接及验收规程》(JGJ18-2003)《钢筋焊接接头试验方法标准》(J140-2001)4、职责(1)项目经理负责组织劳务队进场并组织编制质量、安全措施。(2)总工负责确定施工工艺、参数、质量标准。(3)安质总监负责确保施工过程的质量和安全。(4)工程部长负责编制施工方案及作业培训。(5)技术员负责技术交底及现场作业指导。(6)施工员负责现场机械、劳动力安排调度。(7)实验员负责质量检测。中铁四局集团新建海南西环铁路XHZQ-4标项目经理部作业指导书15、机械材料1、材料(1)钢筋:钢筋表面清洁、无污染、锈蚀及裂纹。钢筋应有出厂合格证,试验报告性能指标应符合有关标准和规范的规定并具有可焊性。(2)钢筋端头:钢筋端头应平直、干净,不得有马蹄形、压扁、凸凹不平、弯扭等严重变形,如果有应用砂轮切割机切割、矫正。钢筋端头200㎜内不得有油污、泥浆等污染,污染的钢筋应清洁后才能焊接。处理后的钢筋应在当天进行焊接,防止处理后再次锈蚀。(3)焊剂:宜采用HJ431焊剂。焊剂要求有出厂合格证,其焊剂性能应符合GB5293碳素钢埋弧焊用焊剂的有关规定。焊剂应存放在干燥的库房内防止受潮,当受潮时,在使用前经250~3000C烘焙2h。使用中回收的焊剂应清除熔渣和杂物,并应与新焊剂混合均匀使用。2、机具(1)电焊机:根据焊接钢筋的直径、牌号选择电焊机的容量,一般采用BX3-500和BX3-1000.一台焊接电源可以供数个焊接机头交替用电。(2)焊接夹具(机头):夹具应具有一定的刚度,使用灵巧,坚固耐用,上、下钳口同心。(3)焊剂盒:焊剂盒呈圆形,由两半圆形铁皮组成,内径为80~100mm,所用焊剂盒应与所焊钢筋的直径相适应。(4)石棉绳:用于填塞焊剂盒安装后的缝隙,防止焊剂盒焊剂泄中铁四局集团新建海南西环铁路XHZQ-4标项目经理部作业指导书2露。(5)铁丝圈:用于引燃电弧。用20#镀锌铁丝绕成直径10mm的圆球,放置于上下需焊接的钢筋之间,通电时形成短路来引弧。(6)时间显示器:用于掌握焊接时间。(7)手持切割机及砂轮片:用于切割钢筋端头不平整处。6、施工方法及工艺电渣压力焊是将两根钢筋安放成竖向对接形式,利用焊接电流通过两根钢筋端面间隙,在焊剂层下形成电弧过程和电渣过程。产生电弧热和电阻热,熔化钢筋,加压完成的一种方法。电渣压力焊的工艺流程:中铁四局集团新建海南西环铁路XHZQ-4标项目经理部作业指导书3电渣压力焊的施焊过程:(1)引弧过程:采用铁丝圈引弧法,将铁丝放在下钢筋端头之间,高度约10mm,电流通过铁丝圈与上下钢筋端面的接触点形成短路引弧。(2)电弧过程:靠电弧的高温作用,将钢筋端部的凸出部分不断烧化,同时将接口周围的焊剂溶化,形成一定深度的渣池。(3)电渣过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