Cold drawn tubes feem ntau yog tsim los ntawm ib qho kub tsis dhau los ntawm ib tug series ntawm txias draws thiab extractions. Nws tuaj yeem hais tias yuav tsum ua kom pom tseeb thiab zoo dua qub hlau. Cov nram qab no yog cov kev lag luam ntau yam thiab cov kauj ruam rau cov hlab ntaws xim:
Lub raj cua txias twv yog ua los ntawm cov pob zeb kub kub ua khoom ua raw, ua raws li kev nqa cov dej oxide thiab tom qab txias dua. Cov khoom tiav yog dov hard coil. Mob khaub thuas ua rau mob los ntawm kev ua kom mob khaub thuas ua rau lub zog ua kom muaj zog thiab ua kom tawv nqaij tawv, thiab lub zog Tawm raws li qhov kev lag luam poob, qhov kev hloov ntawm cov thwj cim yuav tsis zoo dua thiab nws tsuas yog siv tau rau qhov yooj yim deformed. Rolled hard coils yuav siv tau raws li raw cov ntaub ntawv rau kub dip galvanizing nroj tsuag vim kub dip galvanizing units yog tag nrho nruab nrog ib tug kab kev sib ntxub. Qhov nyhav ntawm dov tawv yog feem ntau yog 6 ~ 13.5 tons, thiab sab hauv lub taub hau ntawm steel coils yog 610 hli. Kub dov dej (plua plav seamless steel yeeb nkab): lub yeeb nkab dawb paug * cua sov → kev pleev xim rau peb lub plhaws ob plhaus nkawm, ) → cim → cia. Cov dej khov seamless hlau yeeb nkab: cov yeeb nkab pov tseg → qhov dej taws → cua sov → pib → kev sib tw → roj pleev xim → cov xim roj ntau ntau (txias) (qhov paub tseeb tias paub tseeb) → cim → kev khaws cia.
Cold drawn tubes yog ib hom steel tube, uas yog, lawv muab cais ua raws li cov khoom sib txawv ntau thiab txawv ntawm cov xim kub (nthuav). Nyob hauv tus txheej txheem ntawm nthuav tawm cov ntaub qhwv los yog cov ntaub qhwv raw, nws yog ua los ntawm ntau hom kev sib tw txias, thiab feem ntau yog ua los ntawm ib qho saw lossis ob chav saw khaub-siv tshuab ntawm 0.5-100 T. Mob khaub thuas (dial) steel yeeb nkab ntxiv rau cov yeeb nkab hluav taws xob qis, qis thiab nruab nrab siab boiler steel yeeb, siab kub boiler steel yeeb, yeeb nkab hlau yeeb, yeeb nkab steel yeeb nkab, roj tawg ntim yeeb nkab, ua haujlwm yeeb nkab, thick-walled yeeb nkab, me me-caliber ntxiv puab pwm sib tw yeeb nkab lwm yam Nws kuj muaj xws li cov pa roj carbon fiber hlau, cov hlau uas muaj hlau khov-cov hlau khov kho, cov kav hlau uas tsis muaj khov rau cov hlau, thiab cov kav hlau zoo li tus kav hlau. Cov dej txias sib tw yuav tau muaj lub dav diameter ntawm 6 hli, ib lub phab ntsa ntawm 0.25mm, ib lub yeeb nkab nyias nyias uas muaj txog li 5 hli, ib lub phab ntsa ntawm tsawg dua 0.25 hli, thiab qhov tseeb thiab qhov zoo tshaj plaws uas yog nws zoo tshaj qhov uas muaj qhov kub sau (nthuav) cov yeeb nkab, tab sis nws yog nyob rau ntawm tus txheej txheem. Cov kev txwv, lawv lub peev xwm thiab ntev yog raug rau qee yam kev txwv.
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