NGHIEN cflu - TRAO D | ANH HUdNG CUA V\ TRI HAN DEN HINH DANG VA KICH THUdC CUA MOI HAN TdNG DOAN TRONG CHE TAO v d TAU EFECT OF WELDING POSITIONS ON SHAPE AND DIMENSIONS OF MODULE WELD IN FABRICATE SHIP'S HULL NCS Vu Van Ba', PGS, TS Nguyin Thdc Ha^ PGS, TS Bui Van Hanh' 'Trddng Dji hoc Sd pham Ky thuat Nam Dinh 'Trddng Dai hoc Bach Khoa Ha Noi T6M TAT Hien nay, cong nghe dong tdu theo tong doan (module) btidc ddu dd diWc dp dung d mot s may ddng tiu Un b nUdc ta nhu Bach Dang, Ha Long Tuy vay, dp dung d mdc sd khai, cdc hU nghe chua dong bg, hieu qud chUa dat dUdc nhu mong muon Cdng doan che tao moi hdn tong glai doan quan trgng nhdt quyet dinh chinh den ndng sudt, chdt lUOng va ben vo tdu Mgt so nh dong tdu Viet Nam da mua thiet bi hdn ddy loi thudc tU ddng de che too mdi hdn tdng doan, nhUng den van chUa dng dung dUdc, chUa tap trung nghien citu dng dung mgt each ddy dit, hod Vi vdy, vhn sii dung chu yeu qud trinh hdn thu cdng vd bdn tU ddng, d&n d^n nang sudt vd chdt lU thdp, Ichdng on dinh phu thugc chii yeu vdo tau ngM ciia ngUdi thd Cdng trinh ndy, tap trung nghien cdu dnh hiidng cua vi tri lien ket hdn den hinh dang vd ki thudc mdi hdn tong doan vo tdu sd dung cdng ngM hdn bdng dien cUc ndng chdy mdi trUdn hoat tinh ddy hdn ldi thuoc (FCAW) tU ddng Tren cd sd dd ndng cao khd ndng dng dung iing dun ngM hdn FCAW tu ddng vdo qud trinh che too vo tdu, nang cao ndng lUc dong tdu d cdc nhd mdy tdu VietNam Td khoa: FCAW; Cdng nghe ddng tdu theo tdng doan; Hdn vo tdu; Hdn gidp moi mdt phia; T ASME; AWS: ISO ABSTRACT Currently shipbuilding technology ofthe method module was initially applied in a large nu of shipyards in Vietnam as the Bach Bdng shipyard Ha long shipyard, However, application o primitive, technology steps is not synchronous, efficiency is not achieved the desired Fabrication of module welds is the most important stage to decide tM productivity, quality and stability of ship Some shipyards in Vietnam have purchased automatic welding equipment with FCAW to fabricat module welds, but so far it has not been applied because it has not been studiedfor application suffi complete Currently process of welding manual and semi-automatic is still used primarily, leading productivity, quality and unstable This studyfocused on the effects of welding positions on shape and dimensions ofthe module w in fablicate ship's hull To improve usability applications automatic welding technology FCAW in process of manufacturing ship's hull Key word; FCAW; Assembly ofthe block, welding ships' hulk Welding technology parame Welding position: TCVN; ASME; AWS: ISO Q TAP CHf CO KHi VIET NAM, S6 nam 2013 NGHIEN CUTU - TRAO 061 I.DATVANDE Cdng nghl ddng tau theo tdng doan la tau dfldc chia thdnh eae tdng doan nhfl: Tong do^n chuan, budng may, ldi, mui, Cdc tdng do^n ndy sl dfldc chl tao hoan chinh cdc xfldng, sau dd se dfldc lap ghep tdng doan than tdu trin da tau Cdng nghe cd tinh chuyin mdn hda - tfl ddng hda cao ddi hdi sfl ddng bd ve cdng nghl gifla ede nguyin edng, edng doan; Ngoai vile ndng eao hieu qua kinh te, nang sudt, chat lflpng cdn dam bao an toan lao ddng va gidm dang ke sflc lao ddng qua ngfldi thd Sd Ifldng liln kit ban tdng doan khdng nhilu, nhflng la mdi han giap mdi ddi nhat; True mdi hdn hay vi tri han thay ddi theo biln dang thilt kl eua vd tau tfldngflngvdi mdi vi tri phdn ehia tdng dogin, mdi hdn xudt phdt tfl ddy tau, udn eong ehuyen tilp tfl day len man va lln din mat bong tau Theo edc tilu chuan phdn loai vi tri hdn thdng dung nhfl: TCVN, ASME, AWS Dl.l, ISO-EN 287, Cdng nghe hdn FCAW tfl ddng khac phiie dfldc nhflng nhfldc diem vdn cd cfla ban hd quang tay nhfl thdi gian cd ho quang thap, tdc dp dap thap, tdn that dau mau que han So vdi han day dac mdi trfldng bdo ve, diln eUe ldi thude ed mdt sd flu diem nhfl mflc dp ban tde thap, hinh dang bl mat moi hdn dfldc cai thiln dang ke Ngoai ra, kim loai mdi ban it bi ro va eho kit qua kiem tra bang chieu tia X mdt cdch nhdt quan hdn nhilu Dofluthi mat dp ddng dien ban cao, dien dp ban Idn, cpt hd quang rdng va chieu sdu ngau ldn hdn, nin cdng nghl ban rat thich hdp eho ban gidp mdi mdt phia ed gdc ranh han nhd vd khe hd day ldn hdn, cung nhfl thu dfldc nang suat, chat Ifldng va tilt kilm dfldc nhilu chi phi sd vdi cac phfldng phap ban hd quang tay, hdn MAG XAY DUMG MO HtNH THlTC NGHIEM De nghien cflu anh hfldng cua vi tri ban den hinh dang va kich thflde cfla mdi ban tdng doan ta tien hanh xay dflng md hinh thi nghiem thu nhd theo bien dang vd tau d gdc chuyin tilp tfl day lln man tdu va dfldc ehia cung nhu hinh 2.1; Mdi eung tUdngflngvdi mdt vi tri liln kit ban (LKH) cu the nhfl: Cung cp^ tfldngflngvdi vi tri hdn tran, cung cp^ tfldng flng vdi LKH d day eung tfl 6h-5h, cung