Jul 04, 2024 Tso lus

Keeb Kwm Ntawm Electroslag Vuam

Cov txheej txheem ntawm electroslag vuam tau patented los ntawm Robert K Hopkins hauv Tebchaws Meskas thaum Lub Ob Hlis 1940 (patent 2191481) thiab tsim thiab ua kom zoo dua ntawm Paton Institute, Kiev, USSR thaum xyoo 1940s. Txoj kev Paton raug tso tawm rau sab hnub poob ntawm Bruxelles Trade Fair ntawm 1950.[1] Thawj qhov kev siv dav hauv Asmeskas yog xyoo 1959, los ntawm General Motors Electromotive Division, Chicago, rau kev tsim cov traction motor thav ntawv. Xyoo 1968 Hobart Cov Kwv Tij ntawm Troy, Ohio, tau tso tawm ntau lub tshuab siv rau hauv kev tsim nkoj, kev tsim kho choj thiab kev lag luam loj hauv kev lag luam. Nyob nruab nrab ntawm lub xyoo 1960s thiab lig 1980s, nws tau kwv yees tias hauv California ib leeg tshaj li ib lab stiffeners tau welded nrog cov txheej txheem electroslag welding. Ob lub tsev siab tshaj plaws hauv California tau welded, siv cov txheej txheem electroslag welding - Lub tuam txhab Bank of America hauv San Francisco, thiab cov tsev ntxaib Security Pacific hauv Los Angeles. Lub Northridge av qeeg thiab av qeeg Loma Prieta tau muab qhov kev sim "lub ntiaj teb tiag" los sib piv tag nrho cov txheej txheem vuam. Kev lag luam steel hlau welding yog paub zoo tias, ntau tshaj li ib txhiab daus las hauv kev kho cov kab nrib pleb yog xav tau, tom qab Northridge av qeeg, los kho cov kab nrib pleb propagated nyob rau hauv welds ua nrog cov txheej txheem gasless flux cored hlau. Tsis yog ib qho tsis ua hauj lwm lossis ib qho kev tawg tawg tau pib nyob rau hauv ib qho ntawm ntau pua-ntawm-txhiab welds ua rau ntawm daim hlau txuas ntxiv welded nrog cov txheej txheem Electroslag welding.The Keeb Kwm Ntawm Electroslag Vuam Rau High Rise Building Thiab Choj.

Txawm li cas los xij, Tsoom Fwv Teb Chaws Txoj Kev Loj Hlob (FHWA) tau soj ntsuam cov txheej txheem tshiab thiab pom tias electroslag vuam, vim tias siv cov cua sov ntau heev, ua rau cov khoom siv coarse-grained thiab brittle weld thiab xyoo 1977 txwv tsis pub siv cov txheej txheem rau ntau daim ntawv thov. [3] FHWA commissioned kev tshawb fawb los ntawm cov tsev kawm ntawv qib siab thiab kev lag luam thiab Narrow Gap Txhim Kho Electro Slag Vuam (NGI-ESW) tau tsim los ua kev hloov. FHWA moratorium raug tshem tawm hauv 2000

 

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