Platform vuam xav tau ntau dua li cov cua sov thiab muab tub lim hlau. Nws yog qhov chaw uas muaj kev ncaj ncees raws li lub ntiaj teb kev thauj khoom tiag tiag - qhov twg qhov tsis sib haum xeeb tack weld tuaj yeem cuam tshuam rau hauv kev ua haujlwm kim, ncua kev ua haujlwm, lossis phem dua, kev ua haujlwm tsis ua haujlwm hauv kev ntxhov siab. Ntawm Botou Haijun Hlau Khoom Co., Ltd., peb tau ua tiav ntau dua 12,000 lub platform vuam ib ntus thoob plaws lub chassis ua liaj ua teb, cov cuab yeej siv tsim kho, thiab cov khoom siv hluav taws xob siv hluav taws xob. Qhov peb tau kawm tsis yog qhov theoretical: nws tau sau rau hauv peb cov ntaub ntawv DFM, hlawv-los ntawm cav, thiab kev ntsuas tom qab vuam distortion.
Pre-Weld Preparation yog Tsis-Tshaj-tsis xaiv
Feem ntau lub platform vuam tsis ua haujlwm pib ua ntej arc ntaus. Peb pom nws ntau zaus: cov pab pawg hla kev sib koom ua ke kom pom tseeb, xav tias cov khoom siv flatness, lossis tsis quav ntsej txog kev sib txawv ntawm cov nplais ntawm cov hlau tsis muaj steel. Ntawm peb qhov chaw Botou, txhua lub rooj sib txoos hauv lub platform pib nrog peb qhov kev txheeb xyuas tsis sib tham:
Gap kam rau ua ≤ 0.5 mm hla kev sib koom ua ke ntev - ntsuas nrog ntsuas ntsuas * ua ntej * clamping, tsis yog tom qab Lub hauv paus hlau kub ≥ 10 ° C nyob rau hauv qhov chaw txias; Hauv qab no, preheat rau 50 ° C rau carbon steel, 100 ° C rau 304 stainless-tsim nrog infrared ntsuas kub ntawm peb lub ntsiab lus ib 'meter' Qhov chaw huv huv tau lees paub los ntawm cov kuab tshuaj so + daim ntaub dawb kuaj: tsis pom qhov seem, tsis muaj cov roj ntiv tes, tsis muaj cov hmoov av sib tsoo hauv qhov crevices Peb ib zaug scrapped 17 bracket sib dhos vim hais tias ib pawg ntawm txias-kuav los tiag steel tuaj nrog inconsistent zeb-scale thickness. Cov txheej txheem oxide tawg tsis sib xws thaum GMAW, ua rau micro-porosity hauv paus hla. Tam sim no, tag nrho cov xaim xaim tau raug soj ntsuam spectral rau saum npoo oxide uniformity - thiab peb kho cov roj thaiv thaiv (los ntawm 18 L / min mus rau 22 L / min) thaum ntsuas qhov sib txawv tshaj ± 0.3 µm.
Cov txheej txheem xaiv dictates cov qauv kev ua tau zoo
Kev xaiv ntawm FCAW, GMAW, thiab SAW tsis yog hais txog kev ceev - nws yog hais txog kev sib piv thermal input rau geometry, cov khoom tuab, thiab kev pabcuam thauj khoom. Rau cov qauv txheej txheem nrog ≥6 hli phab ntsa tuab thiab cov pob qij txha txuas ntxiv, peb ua haujlwm rau flux-cored arc vuam siv E71T-1 hlau. Vim li cas? Nws cov slag system zam me me haum-up variation zoo dua li cov khoom xaim, thiab nws cov nyiaj tso nyiaj ntau dua txiav qhov kub-cuam tshuam cheeb tsam (HAZ) dav los ntawm 22% piv rau GMAW ntawm tib yam amperage.
Tab sis rau nyias-gauge platforms-zoo li txhuas txhawb nqa decks rau hnub ci mounting systems-peb hloov mus rau pulsed GMAW nrog 1.2 hli ER5356 hlau. Pulse zaus nyob ntawm 120 Hz; ncov tam sim no yog kaw ntawm 145 A. Qhov no tiv thaiv kev kub nyhiab ntawm 2.5 hli los xij thaum tuav qhov tob tob ≥1.8 hli. Qee tus yuav sib cav MIG yog "yooj yim" rau txhuas. Txawm li cas los xij, tsis muaj kev tswj cov mem tes, peb tau ntsuas 37% ntau dua qhov sib txawv thiab 4 × ntau qhov porosity hauv cov huab cua ntub - txheeb xyuas los ntawm kev ntsuas hluav taws xob ntawm 120 tus qauv welds.
Clamping Strategy txiav txim siab Dimensional Stability
Clamps tsis tuav qhov chaw - lawv tswj cov kev ntxhov siab seem. Peb qhov xwm txheej phem tshaj plaws ntawm lub platform warpage tau tshwm sim ntawm 3.2-meter kev ua liaj ua teb: rau qhov sib npaug ntawm C-clamps tsim kev tswj hwm hauv zos, yuam kev cuam tshuam sab nraud ntawm nruab nrab. Tam sim no peb siv cov kev sib txuas ua ke: ua ntej txhim kho datum npoo, tom qab ntawd siv cov clamps ntab ntawm 300-mm ib ntus raws cov tsis-datum flanges, tso txhua qhov clamp * tom qab * qhov sib txuas uas nyob ib sab txias rau 60 ° C. Cov koob yees duab cua sov paub meej tias qhov no txo qis qhov cuam tshuam ntawm 65% piv rau qhov zoo li qub clamping.
Peb kuj embed strain-relief slots-0.8 mm dav, txiav nrog laser-raws li high-stress hloov chaw. Cov no ua raws li kev tswj xyuas kev ntxhov siab thaum lub caij txias. Hauv ib lub platform siv cov cuab yeej siv, ntxiv peb qhov 12-mm qhov txo qis tom qab vuam qhov sib txawv ntawm 2.1 hli / m txog 0.4 hli / m-tsis muaj kev siv vuam tom qab vuam.
Kev tshuaj xyuas yuav tsum mus dhau qhov kev kuaj pom
Kev soj ntsuam pom pom tsuas yog 41% ntawm qhov tsis txaus ntseeg tseem ceeb hauv platform welds, raws li peb cov ntaub ntawv NDT sab hauv los ntawm 2022-2023. Peb xav tau peb-tier pov thawj:
Kev saib xyuas lub sijhawm tiag tiag: Txhua tus neeg hlau vuam tshuab log voltage, tam sim no, mus ncig ceev, thiab xaim pub tus nqi ib ntu 50 hli. Deviations> ± 3% ua rau tsis siv neeg nres Tom qab-weld dimensional validation: Txhua lub platform tau txais CMM scanning tiv thaiv CAD qauv - tsom rau qhov tseem ceeb ntawm cov qauv, bearing lub rooj zaum flatness (≤0.08 hli), thiab weld ceg sib xws (± 0.3 hli) Functional load kuaj: Random 5% ntawm cov khoom tsim khoom siv nyiaj 1.5 × rated load rau 120 vib nas this. Peb ntsuas deflection ntawm yim lub ntsiab lus - tsis yog qhov siab tshaj plaws xwb, tab sis gradient hla tus qauv Qhov kev qhuab qhia no ntes tau qhov teeb meem tshwm sim nyob rau hauv qhov sib sib zog nqus-tsim bracket welds: pom tau qhov muag pom qhov tsis muaj fusion ntawm qhov sib txuas ntawm lub vojvoog kos thiab flange. Kev ntsuam xyuas ultrasonic qhia tau hais tias 92% ntawm cov welds muaj qhov tsis sib xws. Peb rov tsim kho qhov sib koom ua ke - ntxiv 0.5 hli hauv paus ntsej muag thiab txo lub kaum sab xis ntawm 75 ° txog 65 ° - thiab tshem tawm qhov tsis zoo.
Platform Vuam yog ib qho system-tsis yog kauj ruam
Platform vuam ua tiav tsuas yog thaum tsim, xaiv cov khoom siv, kev tsim kho vaj tse, kev tswj cov txheej txheem, thiab kev tshuaj xyuas ua haujlwm ua ib qho system. Ntawm Botou Haijun, peb kho txhua lub platform raws li cov kabmob uas muaj kabmob - tsis yog cov khoom sib sau ua ke. Peb cov txheej txheem ISO-raws li kev ua haujlwm embeds DFM tawm tswv yim * ua ntej * quoting, weld txheej txheem tsim nyog * ua ntej * tooling tso, thiab traceable cov ntaub ntawv pov thawj * nrog rau txhua yam khoom xa tuaj *. Peb tsis muag welds. Peb xa cov ntaub ntawv pov thawj structural continuity.
Rau cov kws tshaj lij hais txog lub platform vuam, pib ntawm no: txhais txoj hauv kev thauj khoom ua ntej, tom qab ntawd xaiv qhov sib koom ua ke, tom qab ntawd cov txheej txheem sib tw rau metallurgy - tsis yog qhov thim rov qab. Qhov kev hloov ntawd ib leeg txiav rov ua haujlwm los ntawm 38%, raws li 2023 cov ntaub ntawv los ntawm 47 tus neeg siv khoom. Platform vuam tsis yog hais txog kev koom nrog hlau. Nws yog hais txog kev lees paub lub zog sib kis - thoob plaws lub caij nyoog, hla kev hloov pauv, thoob plaws kaum xyoo.
