浅析船用铸钢件与船用强度钢手工焊.doc

船用铸钢件与船用高强度钢气体保护焊/手工电弧焊 焊接工艺规程 WPS of Ship Casting Steel to High Strength Steel Gas Shielded Welding /SMAW 船检意见： 焊工必须持经过船级社认可的焊工证 焊接材料必须符合焊接工艺标准经DNV认可 预先进行焊接试验，样板须经过NDT检测并合格再上船安装之前 焊接过程和焊接参数进行控制并记录 船上焊接焊缝需经过NDT检测合格 船东意见 焊工名单人员须经DNV认可资质 焊接材料需提供证书 焊接结束需通过UT和MT检测提供报告 焊接过程中船厂必须对温度（层间温度）控制 5.船厂必须对预热及焊后热处理进行控制，焊接报告必须提交至DNV及船东办公室。 编制 AUTHORIZE 校对 APPROVE 审核 CHECK 船检 CLASS 船东 OWNER 注：此工艺文件经船东船检认可签字后下发生产部，后期博特宁(ZC3001 / ZC3002/ZC3009/ZC3010)所有船只艉部节能罩均按照此工艺规程施工，原件由品质部存档。Notice: This technology process to be delivered to production dept. after approving by owner and class, and Bertling (ZC3001 / ZC3002/ ZC3009/ZC3010) vessel stern duct welding to be carried out according to it, the technology process to be kept by QC dept. 中船重工船业有限公司品质部 QC DEPT./ZCHI 2012.03.10 范围: Scope: 1.1 焊接方法Welding process 手工电弧焊 SMAW 1.2 应用范围Applied range 本工艺规程适用于船用铸钢件与船用钢板焊接This technology process is applied for ship steel casting to steel welding 母材Mother Plate 铸钢件材质为DNV410W，船用钢为DNVA36 Steel-casting class DNV410W, steel grade is DNVA36 3.焊接接头方式及坡口形式Welding joint and bevel 4．焊接要求 Welding Requirement 焊接之前必须除去预加工边的锈蚀，油污，灰尘，潮湿等。 Welding should be done after removing the rust, oil, dust, moisture etc. 每道焊层必须用钢丝刷清理打磨干净。 Each layer should be removed slag by wire brush and grinding. 如果坡口用碳弧气刨开设，坡口处的碳迹必须打磨干净。 If groove is air-arc gouged, grind surface of groove to smooth and to remove all trace of carbon. 电焊条须经烘干处理（详见8.3），未经烘干的焊条不得使用。 Electrode should be dried as per section 6.5 and should not be used without drying. 手工焊时焊条的摆动幅度应小于所用焊条直径的3倍。 Wide of weaving to be limited to less than three times of used electrode diameter. 焊接采用退焊法，焊接应用小电流多层多道焊，每道焊层不能过大，每层焊道应用手锤锤击焊缝以减少焊缝应力，各焊道接头应错开50mm。 Carry out back ward and multi-pass, multi-layer welding with low current and thin layer, harming each pass to reduce concentrated strength, joints of each pass shall be 50mm off set. 每道焊缝应连续施焊，以确保合适的层间温度。 Continue welding every pass to keep prop