1.Dab tsi yog lub hauv paus ntsiab lus ntawm galvanized coil dabtsi yog khoov?
Thaum lub galvanized kauj yog khoov, peb tuaj yeem xav tias nws yog khoov ib qho khoom:
Txheej txheej (sab deb tshaj plaws ntawm qhov chaw): Hauv qab nro.
Sab hauv txheej (sab ze tshaj plaws rau qhov chaw): Nyob rau hauv compression.
Cov txheej txheem nruab nrab: Hauv nruab nrab, nws qhov ntev tseem nyob tas li.
Cracking tshwm sim thaum lub txheej txheej yog stretched tshaj nws ductility txwv (elongation ntawm so).
2.Qhov piv ntawm khoov vojvoog (R) rau cov khoom thickness (T) cuam tshuam li cas?
Qhov tseem ceeb ntawm kev txiav txim siab tawg tsis yog lub kaum sab xis nws tus kheej, tab sis qhov piv ntawm qhov khoov vojvoog (R) rau cov khoom tuab (T), lossis R / T.
R yog lub vojvoog ntawm lub arc tsim los ntawm hauv qab ntawm V -notch ntawm lub qis tuag los yog lub ntsis ntawm lub Upper tuag.
T yog lub thickness ntawm galvanized coil puag (tsis suav cov zinc txheej).
Qhov kev txiav txim siab yog: qhov me me ntawm R / T piv, qhov ntau dua qhov ncab ntawm cov khoom siv sab nrauv, thiab qhov ntau dua nws yuav tawg.
3.Qhov kev nkag siab yuam kev tias "lub kaum sab xis loj dua, qhov yooj yim dua tawg" tuaj qhov twg?
Kev puas tsuaj loj: Yog tias cov khoom raug khoov ntawm qhov me me R / T, cov fibers sab nrauv tuaj yeem nyob rau ntawm qhov kev tsim kua muag thaum nws ncav cuag 90 degrees. Ua kom lub kaum sab xis mus rau 120 degrees lossis ntau dua yuav ntxiv cov khoom uas twb muaj lawm ntawm qhov kev tawg, ib txwm ua rau tawg.
Kev pom kev sib raug zoo: Cov neeg ua haujlwm pom qhov teeb meem li "Kuv khoov ntawm lub kaum sab xis lub sijhawm no dua li lub sijhawm dhau los, thiab nws tawg," thaum tsis quav ntsej qhov laj thawj: lawv tau siv tib yam, ib yam nkaus thiab - lub vojvoog me me.
4.Dab tsi yog lwm yam uas cuam tshuam rau kev khoov tawg ntawm galvanized coils?
Ductility ntawm cov khoom siv hauv paus:
Qhov qis qis- cov pa roj carbon steel (xws li SPCC): Ductility yog qhov nruab nrab, raws li kev txwv qhov qis qis qis.
High-zoo qis- carbon steel / microalloyed steel: Los ntawm kev ua kom zoo nkauj thiab kev ua haujlwm, nws muaj ntau dua elongation ntawm kev tawg thiab khoov ntau dua.
Rolling direction: Khoov raws daim ntawv dov kev taw qhia yog qhov yooj yim rau kev tawg dua li khoov rau nws. Kev xyaum zoo tshaj plaws yog ua kom txoj kab khoov ntawm ib lub kaum ntse ntse mus rau qhov kev taw qhia dov.
Kev cuam tshuam ntawm zinc txheej:
Cov txheej zinc kuj tseem tuaj yeem tsim microcracks thaum khoov, tab sis qhov no feem ntau tsis cuam tshuam rau tag nrho cov qauv. Yog tias cov khoom siv hauv paus tsis tawg, microcracks hauv zinc txheej muaj kev txwv tsis pub muaj kev tiv thaiv corrosion.
Kev tshaj tawm -galvanizing kev kho cua sov (xws li annealing) cuam tshuam rau cov khoom siv lub hauv paus hardness thiab softness, yog li cuam tshuam rau kev ua haujlwm dabtsi yog khoov.
Bending txheej txheem:
dabtsi yog khoov ceev: Ntau dhau ceev bending speeds nce tus nqi ntawm cov khoom, ua rau nws nkig thiab ua rau muaj kev pheej hmoo ntawm tawg.
Cov cuab yeej ntse: Cov cuab yeej hnav hnyav lossis cov cuab yeej ntse heev tuaj yeem ua rau muaj kev ntxhov siab ntawm cov ces kaum, ua rau tawg.
5.Dab tsi yog kev ceev faj thaum khoov galvanized coils?
Ua ntej qhov tsawg kawg nkaus khoov vojvoog: Ua ntej tsim thiab ua, nco ntsoov sab laj nrog koj tus neeg muab khoom siv rau qhov pom zoo yam tsawg kawg nkaus khoov vojvoog rau qib tshwj xeeb ntawm galvanized kauj. Piv txwv li, tus neeg muag khoom yuav pom zoo kom tsawg kawg yog khoov vojvoog ntawm 0.5 npaug ntawm phaj thickness (0.5T).
Xaiv qhov tsim nyog tuag: Raws li cov khoom thickness thiab qhov tsawg kawg nkaus khoov vojvoog, xaiv ib tug txaus loj tsawg tuag V-groove dav thiab ib tug tsim nyog tuag qhib vojvoog. V-groove dav feem ntau yog 6-8 npaug ntawm phaj thickness.
Thaum cov ces kaum loj yuav tsum tau: Yog tias koj tus qauv tsim yuav tsum muaj lub kaum sab xis loj, xyuas kom meej tias lub vojvoog khoov (R) koj siv muaj kev nyab xeeb rau lub kaum sab xis. Thaum twg ua tau, ua qhov tseem ceeb ua kom lub vojvoog khoov dhau los thawb cov khoom txwv.