1 Khoom Description
Rau lub tshav kub exchanger , Tus naj npawb ntawm cov pob qij txha ntawm tshav kub exchanger tube thiab tooj liab clad steel bimetallic phaj raj ntawv yog loj. Thaum lub sij hawm ua haujlwm kub exchanger , Kev sib txuas ntawm cov yeeb nkab thiab cov ntawv raj , Yog qhov kev sib tsoo ntau tshaj plaws , Yog li ntawd, cov txheej txheem kev sib txuas ntawm cov khoom siv hluav taws xob thiab cov ntawv raj yog ib qho ntawm cov txheej txheem tseem ceeb ntawm tag nrho cov khoom siv hluav taws xob. Kev sib txuas tam sim no ntawm cov khoom siv hluav taws xob sib txuas thiab cov ntawv raj ' Nws feem ntau suav nrog kev sib koom ua ke, kev sib txuas, kev sib txuas ntxiv ntxiv rau vuam, sab hauv qhov vuam thiab tawg vuam. Rau tooj liab kub exchanger , Feem ntau ntawm cov thawj tooj liab los yog tooj dag tube nplooj ntawv , Lub tshav kub exchanger raj yuav tsum yog ua los ntawm liab tooj liab los yog lwm yam ntaub ntawv.
2 DC argon arc vuam
In DC state, the welding current must be large enough to form a good welding pool. During the welding process, with the accumulation of input heat, the welding speed or welding current should be adjusted at any time according to the change of weld pool size. Practice has proved that when the welding current I=280~320A, the weld formation is good; When I>330A, nws yog ib qho yooj yim los tshuab cov kua hlau hauv lub pas dej molten mus rau sab nraud ntawm lub pas dej molten vim yog lub zog arc loj, yog li lub vuam tsis tuaj yeem tsim; Thaum kuv Tsawg dua los yog sib npaug rau 280A, lub melting ceev yog qeeb heev thiab cov txheej txheem vuam tsis ruaj khov. Thaum kuv=300A, phau ntawv vuam tau txais yuav, thiab qhov vuam ceev tau hloov kho txhua lub sijhawm, thiab qhov vuam tsim tau zoo. Txawm li cas los xij, yog tias siv vuam tsis siv neeg, kev tswj ntawm vuam ceev yog qhov nyuaj thiab qhov kev tsim vuam tsis zoo ib yam. Yog li, DC tsis haum rau kev siv vuam tsis siv neeg, thiab kev ua haujlwm ntawm phau ntawv vuam yog qhov tsis zoo.
3Square yoj DC mem tes argon arc vuam
Txhawm rau kov yeej qhov tsis zoo ntawm DC vuam , Square yoj argon arc vuam yog saws (Daim duab 2a). Tsis pub dhau lub sijhawm tam sim no , Yog tias lub ncov tam sim no loj txaus , lub pas dej molten tuaj yeem tsim ncaj qha rau ntawm qhov sib koom ua ke , Tom qab lub pas dej molten ncav cuag qhov loj me, kev sib txhuam vuam tshuab tau siv dav hauv kev vuam ntawm cov khoom siv hlau sib txawv , Txawm li cas los xij, kev sib txhuam welder ntawm electromagnetic ntshiab hlau thiab tooj dag.
Kev tshawb fawb kos duab tseem tsis tau tshaj tawm. Txoj kev tshawb no dhau qhov kev sim thiab kev tshuaj ntsuam , Kev sib txhuam vuam txheej txheem ntawm DT4A electromagnetic ntshiab hlau thiab H62 tooj dag tau ua kom zoo dua , Cov yam ntxwv thiab kev sib koom ua ke ntawm kev sib txhuam vuam ntawm ob qhov kev sib txhuam cov ntaub ntawv raug ntes thiab tshuaj xyuas , Kev sib txhuam welded sib koom ua ke uas muaj zog dua. tshaj lub hauv paus hlau ntawm cov hlau ntshiab yog tau.
4 Nta
(1) Lub Copper clad steel bimetallic phaj raj tuaj yeem ncaj qha welded yam tsis muaj preheating.
(2) Square yoj mem tes vuam thiab daim duab peb sab yoj mem tes vuam yog ob txoj kev vuam zoo. Vim hais tias cov hlau vuam yog melted instantaneously, lub arc nyob ntawm qhov chaw pib thaum lub sij hawm DC vuam yog zam, yog li cov vuam efficiency siab, vuam seam yog uniform, thiab cov duab zoo.
(3) Cov txheej txheem tsim nyog ntawm square yoj mem tes welding yog: Ia=350~380A, ta=500ms, Ib=220~250A, tb=250m; Cov txheej txheem tsim nyog ntawm daim duab peb sab yoj mem tes vuam yog: Imx=360~400A, t A 500m, Imn=200~280A, td=500ms. Cov txheej txheem no muaj feem xyuam rau ob qho tib si tsis siv neeg vuam thiab phau ntawv vuam.
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