Welding ea sethala e hloka ho fetang feela mocheso le tšepe ea ho tlatsa. Ke moo bots'epehi ba sebopeho bo kopanang le litsela tsa 'nete tsa lefats'e-moo mochini o sa sebetseng hantle o ka oelang ka theko e boima, ho lieha ho fana ka taelo, kapa ho hobe le ho feta, ho hloleha ha masimo tlasa khatello ea maikutlo. Ho Botou Haijun Metal Products Co., Ltd., re entse tatellano ea li-welding tse fetang 12,000 ho pholletsa le chassis ea temo, liforeimi tsa lisebelisoa tsa kaho, le meaho e itirisang ea lipalangoang. Seo re ithutileng sona ha se khopolo-taba: se thathamisitsoe litlalehong tsa rona tsa DFM, lits'oants'o tsa ho chesoa, le litekanyo tsa ho sotha ka morao ho weld.
Tokisetso ea Pele ho Weld ha e Buisanoe—Hase Taba ea Boikhethelo
Liphoso tse ngata tsa sethala li qala pele arc e qala. Re e bona khafetsa: lihlopha li tlola netefatso e kopaneng, li nka ho ba sephara, kapa li iphapanyetsa ho feto-fetoha ha leloala ho pholletsa le lihlopha tsa tšepe e sa hloekang. Setsing sa rona sa Botou, kopano e 'ngoe le e 'ngoe ea sethala e qala ka licheke tse tharo tse ke keng tsa buisanoa:
Ho mamellana ha lekhalo ≤ 0.5 mm ho pholletsa le bolelele bo felletseng ba manonyeletso-e lekantsoeng ka litekanyo tsa feeler *pele* ho clamping, eseng kamora Mocheso oa motheo oa tšepe ≥ 10°C libakeng tse batang; ka tlase ho moo, preheat ho 50 ° C bakeng sa carbon steel, 100 ° C bakeng sa 304 stainless-e netefalitsoeng ka li-thermometer tsa infrared ka lintlha tse tharo ka mithara. Bohloeki ba holim'a metsi bo tiisitsoe ke ho hlakola ka solvent + teko ea lesela le lesoeu: ha ho masala a bonahalang, ha ho na oli ea menoana, ha ho lerōle le silang le qabeletsoeng ka mapetsong Ka nako e 'ngoe re ile ra lahla likopano tse 17 tsa masaka hobane ho ile ha fihla lesela le le leng la tšepe e kolobisitsoeng le nang le botenya bo sa tsitsang ba leloala. Lera la oxide le robehile ka tsela e sa leka-lekaneng nakong ea GMAW, e leng se bakang micro-porosity ho metso ea metso. Hona joale, li-coil tsohle tse kenang li etsoa tlhahlobo ea spectral bakeng sa ho tšoana ha oxide ea holim'a metsi-'me re fetola phallo ea khase e sireletsang (ho tloha ho 18 L / min ho ea ho 22 L / min) ha phapang ea sekala e feta ± 0.3 µm.
Khetho ea Ts'ebetso e Laela Ts'ebetso ea Sebopeho
Ho khetha pakeng tsa FCAW, GMAW, le SAW ha se taba ea lebelo-e mabapi le ho bapisa tlhahiso ea mocheso ho geometry, botenya ba thepa, le ho kenya litšebeletso. Bakeng sa meaho ea sethala e nang le botenya ba ≥6 limilimithara tsa lebota le manonyeletso a sa khaotseng a li-fillet, re lula re sebelisa terata ea E71T-1. Hobaneng? Sisteme ea eona ea slag e mamella phapang e nyane ho feta terata e tiileng, 'me sekhahla sa eona se phahameng sa deposition se fokotsa bophara ba sebaka se anngoeng ke mocheso (HAZ) ka 22% khahlano le GMAW ka tekanyo e ts'oanang.
Empa bakeng sa li-platform tsa li-gauge tse tšesaane-joaloka li-decks tsa tšehetso tsa aluminium bakeng sa lisebelisoa tsa ho holisa letsatsi-re fetohela ho GMAW e nang le pulsed ka terata ea 1.2 mm ER5356. Pulse frequency e lula ho 120 Hz; tlhōrō ea hona joale e notletsoe ho 145 A. Sena se thibela ho chesoa ha maqephe a 2.5 mm ha ho ntse ho boloka botebo ba ho kenella ≥1.8 mm. Ba bang ba ka 'na ba pheha khang ea hore MIG e "bonolo" bakeng sa aluminium. Leha ho le joalo, ntle le taolo ea ho otla ha pelo, re lekile litekanyetso tse phahameng tsa 37% le porosity e 4 × ho feta maemong a mongobo - e netefalitsoeng ka tlhahlobo ea radiographic ho li-welds tse 120.
Leano la Clamping le Khetholla Botsitso ba Dimensional
Li-clamps ha li na likarolo - li laola khatello ea kelello e setseng. Ketsahalo ea rona e mpe ka ho fetesisa ea ntoa ea sethala e etsahetse foreiming ea temo ea limithara tse 3.2: li-clamp tse tšeletseng tse arohaneng ka ho lekana li ile tsa etsa thibelo ea lehae, tsa qobella ho khopama ho tsoa bohareng ba nako. Hona joale re sebelisa li-clamping tse latellanang: qala ka ho lokisa lithapo tsa datum, ebe u kenya li-clamp tse phaphametseng ka linako tse 300-mm haufi le li-non-datum flanges, re lokolla clamp e 'ngoe le e' ngoe * ka mor'a hore * weld e haufi e bata ho 60 ° C. Lik'hamera tse futhumatsang li tiisa hore sena se fokotsa ho sotha ha angular ka 65% khahlano le static clamping.
Re boetse re kentse libaka tse fokotsang khatello—ka bophara ba limilimithara tse 0.8, tse khaotsoeng ka leseasa—haufi le libaka tsa phetoho e matla haholo. Tsena li sebetsa e le litsela tse laoloang tsa ho imolla khatello ea kelello nakong ea pholileng. Sefaleng se seng sa thepa ea kaho, ho kenyelletsa li-slots tse tharo tsa 12-mm ho fokotsitse ho kheloha ha post-weld ho otloloha ho tloha ho 2.1 mm/m ho ea ho 0.4 mm/m—ntle le machining a post-weld.
Tlhahlobo e tlameha ho feta ka ntle ho licheke tse bonoang
Tlhahlobo ea pono e tšoara feela 41% ea liphoso tse kholo ho li-welds tsa sethala, ho latela lintlha tsa rona tsa kahare tsa NDT ho tloha 2022-2023. Re hloka netefatso ea mekhahlelo e meraro:
Tlhokomelo ea nako ea sebele: Lisele tsohle tsa liroboto tse cheselletsang li-log voltage, tsa hona joale, lebelo la maeto, le sekhahla sa phepelo ea terata karolong ea 50 mm. Ho kheloha > ± 3% ho etsa khefutso ea boiketsetso Netefatso ea morao-rao ea weld: Sethala se seng le se seng se hlahlojoa ka CMM khahlano le mohlala oa CAD-tsepa maikutlo ho lipaterone tsa masoba a bohlokoa, tse nang le setulo se bataletseng (≤0.08 mm), le ho tsitsisa ha leoto la weld (± 0.3 mm) Teko ea mojaro o sebetsang: Random 5% ea lihlahisoa tsa lihlahisoa li mamella 1.5 × e lekantsoeng mojaro bakeng sa metsotsoana ea 120. Re lekanya ho kheloha lintlheng tse robeli - eseng feela boholo, empa gradient ho pholletsa le sebopeho Taeo ena e ile ea tšoara bothata bo iphetang ka har'a litšepe tse huleloang ka botebo: ponahalo e amohelehang e sirelelitsoeng ke khaello ea motsoako mateanong a radius le flange. Teko ea Ultrasonic e senotse 92% ea li-welds tse joalo li na le li-discontinuities tse ka tlase. Re ile ra hlophisa bocha geometry e kopaneng - ho eketsa sefahleho sa motso oa 0.5 mm le ho fokotsa ho kenyelletsa angle ho tloha ho 75 ° ho isa ho 65 ° - mme ra tlosa sekoli.
Platform Welding Ke Sistimi — Hase Mohato
Welding ea sethala e atleha feela ha moralo, khetho ea thepa, boenjiniere ba lisebelisoa, taolo ea ts'ebetso le tlhahlobo li sebetsa joalo ka sistimi e le 'ngoe. Ha re le Botou Haijun, re tšoara sethala se seng le se seng e le ntho e jereng mojaro—eseng pokello ea likarolo tse cheselitsoeng. Ts'ebetso ea rona e tsamaellanang le ISO e kenyelletsa maikutlo a DFM *pele * re qotsa, mangolo a ts'ebetso ea weld *pele ho * tokollo ea lisebelisoa, le litifikeiti tsa thepa tse ka lateloang *ka thomello e 'ngoe le e 'ngoe*. Ha re rekise li-welds. Re fana ka ts'ebetso e netefalitsoeng ea sebopeho.
Bakeng sa lienjiniere tse hlalosang li-welding tsa sethala, qala mona: hlalosa tsela ea mojaro pele, ebe u khetha geometry e kopanetsoeng, ebe u bapisa ts'ebetso le metallurgy - eseng ka morao. Phetoho eo feela e fokotsa ts'ebetso e ncha ka 38%, e ipapisitse le data ea 2023 ho tsoa mererong e 47 ea bareki. Welding sethaleng ha se taba ea ho kopanya tšepe. E mabapi le ho netefatsa phetisetso ea matla-ho pholletsa le linako tsa selemo, ho pholletsa le lichifi, ho theosa le mashome a lilemo.
