1. Keeb Kwm Abstract
Cov kev xav tau rau cov raj xa hluav taws xob prefabrication nyob rau hauv offshore engineering thiab petrochemical industries yog qhov siab, thiab cov nyiaj ua haujlwm kuj loj heev. Cov tsoos TIG vuam phau ntawv puag thiab MIG vuam filling thiab npog yog siv, tab sis qhov zoo thiab kev ua haujlwm tsis zoo. Daim ntawv no tau txais cov txheej txheem vuam tshiab-kev ua haujlwm siab kub hlau TIG vuam, kom ua tiav TIG lub hauv paus vuam, txhaws vuam thiab npog vuam, thiab ua tiav MIG vuam txoj kev ua haujlwm siab los hloov cov txheej txheem ib txwm muaj. Los ntawm qhov kev sim no, cov khoom siv kho tshuab ntawm kev tshawb fawb tau ua pov thawj tias muaj txiaj ntsig zoo thiab tau ua tiav hauv kev lag luam.
Lub hom phiaj tshawb fawb
Tam sim no, cov txheej txheem vuam tsoos siv phau ntawv TIG vuam rau hauv paus, phau ntawv vuam lossis MIG vuam, submerged arc vuam thiab lwm yam txheej txheem ntau los sau thiab npog los txhim kho vuam efficiency. Txawm li cas los xij, cov txheej txheem sau thiab npog no tsis yooj yim rau kev ua tiav vuam tsis siv neeg, tsis haum rau ntau yam yeeb nkab diameters, kuj yooj yim los tsim vuam tsis xws luag, thiab vuam zoo dhau tus nqi yog txwv los ntawm cov neeg ua haujlwm qib kev ua haujlwm.
Piv nrog rau TIG vuam zoo tib yam, cov hlau kub TIG vuam ntxiv cov khoom siv hluav taws xob sib cais los ua kom sov lub vuam hlau ntawm lub hauv paus ntawm cov xov hlau txias, thiab ua rau kom ceev ceev ntawm cov vuam hlau tsis hloov cov vuam kab hluav taws xob. Nyob rau hauv txoj kev no, vuam arc tsuas yog yuav tsum tau siv lub zog me me kom yaj cov vuam hlau, yog li txhim kho vuam ntau lawm.
High-efficiency kub hlau TIG yog ntau tshaj 5 npaug ntau npaum li zoo tib yam TIG, piv rau MIG vuam ceev, thiab cov deposition tus nqi yog nce los ntawm 0.3 ~ 0.5kg / h rau 2 ~ 4kg / h. Kev siv hluav taws xob kub hauv tsev TIG yog nyob rau theem tsis ruaj khov thiab nyob deb ntawm kev ua tau zoo thiab kev vuam zoo. Kev ua tau zoo ntawm cov hlau kub txawv teb chaws TIG vuam txheej txheem tsis tau txhim kho thiab tsis tuaj yeem ncav cuag qhov ua tau zoo ntawm MIG vuam. Yog li ntawd, nws yog ib qho tseem ceeb heev thiab tseem ceeb heev los tsim kom tau ib tug npaum kub hlau TIG vuam txheej txheem.
3.1 Cov ntaub ntawv sim
Cov khoom siv niam ntawm cov yeeb nkab sim yog Q235-A steel, nrog lub thickness ntawm 12mm thiab sab nraud txoj kab uas hla ntawm 108mm. Cov tshuaj muaj pes tsawg leeg yog qhia hauv Table 1. Lub zog tensile ntawm Q235-A steel yog σb = 482MPa, lub zog tawm los yog σs = 235MPa, thiab elongation yog δ = 26%. H08Mn2Si vuam hlau nrog txoj kab uas hla ntawm 1.2 hli yog siv. Cov tshuaj muaj pes tsawg leeg yog qhia hauv Table 1. Lub zog tensile ntawm H08Mn2Si vuam hlau yog σb≥500 MPa, lub zog tawm los yog σs≥420MPa, thiab elongation yog δ≥22%.
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3.2 Kev sim txoj kev
Qhov kev sim siv KB370 qhib-hom yeeb nkab clamp hom pipeline prefabrication high-efficiency kub hlau TIG vuam system raws li qhia nyob rau hauv daim duab 1, lub PHOENIX-521 multi-function vuam fais fab qhov chaw, thiab lub ntse arc-200 kub hlau fais fab. Cov txheej txheem kub hlau TIG vuam tau siv, thiab daim duab kos duab sib koom ua ke tau qhia hauv daim duab 2.
Daim duab 1 KB370 yeeb nkab clamp hom high-efficiency kub hlau vuam system
Daim duab 2 Schematic daim duab ntawm kev sib koom ua ke
Ua ntej vuam, sab hauv thiab sab nraud ntawm qhov zawj ntawm cov yeeb nkab kuaj daim yog hauv av thiab xeb-tshem tawm, nrog rau thaj tsam li 25 hli. Ua ntej qhov kev xeem welding, cov yeeb nkab kuaj daim yog kho los ntawm qhov chaw vuam. Peb-point welding yog txaus. Lub misalignment yog tswj nyob rau hauv 1.5mm thiab tsis muaj qhov sib txawv.
3.3 Cov txiaj ntsig kev sim
Tom qab cov qauv yeeb nkab tau welded, lawv thawj zaug raug kuaj pom qhov tsis zoo ntawm X-ray, thiab tag nrho cov dhau qib kuv. Lwm qhov kev sim siv macroscopic metallographic, microscopic metallographic thiab mechanical property tests, raws li pom nyob rau hauv daim duab 3, 4, 5, 6 thiab Table 3, feem. Daim duab 3 thiab 4 qhia meej meej txog peb txheej weld morphology, kev hloov pauv ntawm cov txheej txheem kev sib koom ua ke, thaj chaw me me ntawm cov vuam vuam, thiab tsis muaj qhov pores lossis tawg. Cov lus 3 qhia tau hais tias cov welds tau tawg tag nrho hauv cov khoom siv niam txiv, thiab qhov zoo khoov thiab rov qab khoov tau raws li qhov yuav tsum tau ua ntawm GB / T14452-93 tus qauv. Raws li tau pom los ntawm Table 4, cov lus xaus hauv qab no tau kos:
Daim duab 3 Microstructure ntawm lub hauv paus hlau, tshav kub cuam tshuam cheeb tsam thiab weld hla ntu
Daim duab 4 Macroscopic metallographic qauv ntawm weld hla ntu
Daim duab 5 Tensile test
(a) Zoo khoov
(b) Rov qab
High-efficiency kub hlau TIG tuaj yeem ua tiav TIG vuam zoo thiab MAG vuam ceev, tab sis MAG vuam muaj qhov tsis zoo xws li loj spatter, muaj zog arc, loj porosity, loj kab zog, thiab sib tsoo loj. Txawm hais tias nws qhov kev ua tau zoo ntawm kev tso nyiaj yog siab, nws pom tseeb tsis ruaj khov thiab txhim khu kev qha raws li TIG vuam raws li cov kev xav tau zoo. Kev ua tau zoo ntawm kev ua haujlwm siab kub hlau TIG vuam yog sib npaug los yog me ntsis siab dua MAG vuam;
High-efficiency kub hlau TIG vuam thiab tsoos txias hlau TIG vuam muaj kev txhim kho tag nrho ntawm 5 mus rau 10 zaug.
4. Kev sim xaus
4.1 Kub hlau TIG vuam tuaj yeem tau txais cov vuam nrog qhov tsis xws luag thiab tsim kom zoo;
4.2 Cov hlau pub ceev ntawm cov hlau kub TIG vuam ncav cuag 5m / min, mus txog 6.5m / min, thiab melting tus nqi ncav cuag 3.5kg / h, uas zoo heev txhim kho efficiency ntau lawm;
4.3 Lub tensile tawg ntawm cov hlau kub TIG welds tshwm sim nyob rau hauv cov khoom niam txiv, uas txhim kho kev sib koom ua ke;
4.4 High-efficiency kub hlau TIG vuam tiag tiag ua tiav cov vuam zoo ntawm TIG vuam thiab vuam ceev ntawm MIG vuam.
5. Kev lag luam mature applications thiab prospects
Tom qab ze li ob xyoos ntawm kev tshaj tawm kev lag luam thiab kev thov, peb tam sim no tau siv dav hauv marine engineering, gas, instrumentation, petrochemicals, thiab ntim khoom.
Cov txheej txheem kub kub TIG vuam tsis yog tsuas yog haum rau cov hlau, tab sis kuj rau cov hlau alloy, stainless hlau, duplex steel, npib tsib xee-raws li alloys thiab lwm yam ntaub ntawv (kev sim ntawm ntau yam ntaub ntawv tau qhia tias, tshwj xeeb tshaj yog nyob rau hauv lub duplex steel. welding txheej txheem nyob rau hauv marine engineering thiab lwm yam industries, high-efficiency kub hlau TIG vuam muaj incomparable zoo). Nws tau tawg lub monopoly ntawm txawv teb chaws kub hlau TIG vuam nyob rau hauv Tuam Tshoj, thiab nws efficiency yog 1.5 mus rau 2 lub sij hawm siab tshaj ntawm txawv teb chaws kub xov tooj piv nrog txawv teb chaws hom.
Cov tshuab no ua rau qhov sib txawv hauv cov raj xa hluav taws xob prefabrication vuam, yog cov txheej txheem thev naus laus zis tshiab tsim nyog rau Tuam Tshoj lub teb chaws cov xwm txheej, thiab yog qhov cuam tshuam kev tsim kho tshiab hauv kev lag luam yeeb nkab prefabrication. Nws tuaj yeem hloov kho cov txheej txheem ib txwm muaj ntawm TIG primer + MAG filling thiab npog ob txheej txheej txheem sib xyaw, zam cov neeg siv khoom siv ntau zaus, thiab yog qhov muaj txiaj ntsig tiag tiag thiab ntau lub hom phiaj ntawm cov raj xa hluav taws xob prefabrication vuam system. Cov txheej txheem vuam nrog cov thev naus laus zis no raws li cov txheej txheem tseem ceeb tam sim no kuj tau siv rau cov ntse kav dej prefabrication system, thiab kev lag luam zeem muag yog dav.
Post lub sij hawm: Aug-27-2024
