1.Yuav ua li cas microstructure thiab kev ua tau zoo piv?
Txias-rolled coils: Cov no tau ua cov txheej txheem ntawm "txias dov deformation + recrystallization annealing." Tom qab annealing, cov qoob loo thaum chiv thawj elongated tag recrystallize, sib sau zoo, uniform equiaxed ferrite nplej. Qhov no yog cov ntaub ntawv hauv paus rau nws zoo heev stamping kev ua tau zoo. Equiaxed nplej txhais tau hais tias cov khoom ntawm cov khoom yog qhov tseem ceeb hauv txhua qhov kev qhia (zoo isotropy).
Pickled ntawv: Qhov no tsuas yog ua rau kub dov thiab pickling. Nws cov microstructure yog cov qauv fibrous tus yam ntxwv ntawm cov ntawv kub - dov, nrog elongated nplej raws li dov kev taw qhia thiab tsis sib xws grain loj. Qhov microstructure no ua rau muaj zog anisotropy hauv nws cov khoom siv kho tshuab (qhov sib txawv loj hauv longitudinal thiab transverse cov lus qhia).
2.Yuav ua li cas cov tseem ceeb stamping Performance index piv?
Plastic Strain Ratio (r-tus nqi):
Tus nqi r- ntsuas ib daim ntawv cov ntaub ntawv muaj peev xwm tiv thaiv thinning thaum ncab. Qhov siab dua r- tus nqi ua rau cov khoom yooj yim dua rau kev sib sib zog nqus.
Txias-rolled coils (tshwj xeeb tshaj yog sib sib zog nqus- kos duab thiab ultra- sib sib zog nqus- cov qhab nia kos): Siab r- cov txiaj ntsig tuaj yeem ua tiav los ntawm kev ua kom zoo thiab kev tswj xyuas kev ntxhib los mos (xws li IF steel r-tus nqi > 2.0).
Pickled sheets: R- cov nqi qis heev (feem ntau <1.0) thiab sib txawv heev hauv ntau cov lus qhia. Thaum lub sij hawm sib sib zog nqus nqus, lub lug nyhuv yog qhov tseem ceeb, thiab thinning thiab cracking nyob rau hauv qab fillet yog heev.
Ua Haujlwm Hardening Index (n-tus nqi):
Tus n- tus nqi qhia txog cov khoom muaj peev xwm los txuas ntxiv ntxiv dag zog thaum lub sij hawm yas deformation. Qhov siab n- tus nqi tso cai rau kev faib tawm ntau dua thaum lub sij hawm deformation, ncua lub caj dab hauv zos thiab txhim kho kev ruaj ntseg.
Txias- dov coils: Siab n- cov txiaj ntsig tuaj yeem ua tiav los ntawm kev sib xyaw thiab kev tswj cov txheej txheem.
Cov nplooj ntawv Pickled: Cov nqi qis n- cov txiaj ntsig ua rau lawv yooj yim dua rau qhov chaw deformation concentration thiab tawg thaum lub sij hawm tsim.
Elongation:
Txias-rolled coils: High tag nrho elongation thiab siab uniform elongation.
Pickled nplooj ntawv: Tsawg sib xws elongation thiab tsis txaus cov yas cia.
3.Yuav ua li cas lawv ua tau nyob rau hauv daim ntawv thov stamping tiag?
Txias-rolled coil:
Qhov zoo: Cov kev txwv siab, tsim nyog rau kev tsim cov duab sib txawv (piv txwv li, lub qhov rooj tsheb, roj tso tsheb hlau luam, cov khoom siv hauv tsev). Relatively controllable springback, ua rau siab qhov tseeb. Qhov zoo ntawm qhov zoo, haum rau kev siv ncaj qha rau sab nrauv lossis ua lub siab - zoo substrate rau electroplating thiab painting.
Disadvantages: Tus nqi siab.
Pickled ntawv:
Qhov zoo: Tus nqi pheej yig, 15%-30% pheej yig dua li cov ntawv txias-dov ntawm tib cov lus qhia.
Qhov tsis zoo:
Txwv rau txoj kev yooj yim: xws li tsheb nqaj hlau, crossbeams, lub rooj sib tw, yooj yim brackets, thiab lwm yam., "cov qauv tsim" qhov chaw ua tiav thiab tsim cov complexity tsis tseem ceeb.
Kev pheej hmoo siab heev: Qhov kev pheej hmoo ntawm kev tawg thiab wrinkling nce ntau thaum stamping qhov chaw, ua rau kev hloov kho nyuaj.
High tuag hnav: Surface hardness thiab roughness yuav ua rau tuag sai dua.
Kev ruaj ntseg tsis zoo: Kev hloov pauv hauv cov tuab thiab cov duab tuaj yeem cuam tshuam rau kev ruaj ntseg ntawm stamping ntau lawm thiab qhov sib xws.
4.Ntawm qhov xwm txheej twg yuav tsum txias -rolled coils yog qhov kev xaiv?
Cov khoom muaj cov txheej txheem deformation nyuaj xws li kos duab sib sib zog nqus, bulging, thiab flanging.
Cov khoom yog cov khoom seem lossis muaj cov kev xav tau tshwj xeeb ntawm qhov zoo.
Cov khoom loj loj yuav tsum muaj kev ruaj ntseg ntau lawm thiab tus nqi qis qis.
Cov kev xav tau siab yog muab tso rau ntawm qhov tseeb qhov tseeb thiab lub zog sib xws ntawm cov khoom.
5.Ntawm qhov xwm txheej twg yuav tsum tau txiav txim siab rau cov kua qaub-cov phaj ntxuav?
Cov khoom muaj cov duab yooj yim heev (tsuas yog khoov thiab kos duab ntiav).
Cov khoom no tsis yog -cov khoom siv hauv qhov chaw lossis cov khoom siv ntxiv; deg imperfections tau txais.
Tus nqi siab yog siab heev, thiab kev ua haujlwm tsis zoo tuaj yeem txo tau los ntawm kev tsim ib feem.
Cov khoom siv siab yuav tsum tau muaj (kub- cov ntawv dov tuaj yeem muab cov lus qhia tuab dua).