Nyob rau hauv lub ntiaj teb ntawm txhuas manufacturing, cov txheej txheem dov ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab cov khoom kawg thiab qhov zoo ntawm aluminium coils. No blog ncej delves rau hauv cov kev sib txawv dov ntawm txhuas coils, tsom rau kev nruam nruam-rolling thiab nruam casting thiab dov, zoo li kub dov thiab txias dov.

Cov txheej txheem ntawm cov txheej txheem txhuas phaj tuaj yeem ua tiav raws li hauv qab no:

Nruam cast-rolling: aluminium slab 7-8 millimeter coil, ces txias dov mus rau qhov xav tau thickness;

Nruam Casting Thiab Dov: aluminium slab 15-20 millimeters, rhuab thiab peb-sawv kub dov rau 1-2 millimeters, tiav los yog ntxiv txias dov rau cov ntaub ntawv thinner;

Kub tiav dov rau 3-4 millimeters, txias thiab coiled, ces txias dov mus rau qhov xav tau thickness.

Hais txog qhov zoo ntawm qhov chaw: nruam nruam-rolling yog superior rau kub dov, uas yog superior rau nruam casting thiab dov.

Nyob rau hauv cov nqe lus ntawm mechanical zog: kub dov yog superior rau nruam casting thiab dov, uas yog superior rau nruam cast-rolling.

Cov khoom uas tau dhau los ua qhov txias dov muaj qhov zoo dua, ntau meej qhov ntev, thiab ib qho tseem ceeb nce tensile zog thiab elongation, ua rau lawv indispensable rau daim ntaub ntawv uas yuav tsum tau loj tom ntej deformations.

Nruam Cast-Rolling VS. Nruam Casting thiab Rolling

Nruam Cast-Rolling

Nruam cast-rolling, tseem hu ua direct chill dov lossis kua dov, yog ib txoj kev uas cov kua hlau yog ncaj qha mus rau hauv lub yob sib txawv los ua ib tug semi-tiav lawm los yog tiav cov khoom. Cov yob ua raws li crystallizers rau cov kua hlau thiab ib txhij siv lub siab kom deform cov hlau. Raws li cov kua txhuas nkag mus rau hauv qhov casting thiab dov cheeb tsam los ntawm kev pub noj nozzle, nws ua tau raws li cov rotating casting thiab dov rolls.

Cov cua sov los ntawm cov kua txhuas yog sai sai absorbed los ntawm cov dej txias hauv cov yob, ua rau kub poob sai thiab solidification ntawm yob nto. Cov yob tom qab ntawd siv qee qhov kev txo qis los ua cov cam khwb cia-dov coil. Cov kev tawm tswv yim thiab cov khoom siv ntawm cov hlau hauv qhov chaw casting thiab dov yog ib txwm sib npaug, kom ruaj khov nruam casting thiab dov txheej txheem.

Feem ntau, qhov dav ntawm slab yog txiav txim siab los ntawm cov khoom tiav tiav qhov dav teev nyob rau hauv qhov kev txiav txim. Cov pa coiling thickness yog 7-8 millimeters, nrog qhov siab tshaj plaws ntawm mus txog 2000 millimeters.

Txij li thaum cov txheej txheem tshwm sim ntawm solid-state kub, cov khoom tsim muaj ib tug loj grain qauv. Txawm li cas los, vim qhov kub ua haujlwm tsawg, tsis muaj oxide nplai yog tsim rau ntawm qhov chaw, ua rau lub siab nto tiav. Tab sis cov ductility kuj tsawg.

Nruam Casting thiab Rolling

Nruam casting thiab dov yuav tsum tau ua kom muaj zog ntawm cov kua hlau mus rau hauv ib lub slab nyob rau hauv lub pwm ntawm ib tug nruam caster., uas yog ces ncaj qha dov nyob rau hauv ib tug dov zeb thaum tseem kub, los yog tom qab me ntsis reheating, ua kom tiav cov txheej txheem deformation. Tsis zoo li nruam nruam-rolling, tsis muaj cua txias thiab coiling kauj ruam hauv nruam casting thiab dov.

Lub slab yog ncaj qha rhuab thiab ces dov. Lub xub ntiag ntawm cov kauj ruam cua sov cuam tshuam cov khoom ntawm cov khoom, ua kom yooj yim dua rau cov yas deformation piv rau kev nruam nruam-rolling. Cov khoom tiav lawm muaj ductility zoo dua thiab ruaj khov nyob rau hauv cov ntawv thov uas yuav tsum tau ua tom qab deformation.

Tam sim no, tsuas yog Longding thiab Ding Sheng (Sab hauv Mongolia) factories tsim nruam casting thiab dov cov ntaub ntawv siv Hazelett nruam casting thiab dov tshuab. Cov tshuab no tau siv los ua lag luam hauv xyoo 1960s, tab sis nws daim ntawv thov thiab kev tshawb fawb hauv Suav teb tau luv luv.

Hauv 2009, Longang Iguguang Nual-Precidan haus Plate Co., Ltd. (Luoyang Longding) qhia Tuam Tshoj thawj Hazelett nruam casting thiab dov kab, uas tau muab tso rau hauv kev tsim khoom hauv lub Peb Hlis 2011. Hauv 2013, Sab hauv Mongolia Liansheng Cov Khoom Siv Hluav Taws Xob Tshiab tau qhia Tuam Tshoj thib ob Hazelett nruam casting thiab dov kab, uas tau muab tso rau hauv kev tsim khoom hauv lub Plaub Hlis 2018.

Ob txoj kab ntau lawm muaj qhov dav tsim ntawm 2100 millimeters thiab ib tug ua ke tsim muaj peev xwm ntawm 400,000 tons. Hauv 2018, ob kab ua tag nrho 250,000 tons, thiab hauv 2019, 350,000 tons. Nyob rau hauv cov nqe lus ntawm cov khoom tsim, Longding feem ntau ua rau ntau yam ib leeg-zero foil, siv kab, kho kom zoo nkauj phaj siv, cov khoom sib sib zog nqus, thiab tsheb radiator khoom billets, nrog ib xyoos tso zis ntawm txog 180,000 rau 200,000 tons. Liansheng cov khoom lag luam feem ntau suav nrog ob-zero foil, ib leeg-zero foil, cua txias foil, thiab tsheb radiator khoom billets.

Cov muaj pes tsawg leeg ntawm cov txheej txheem nruam casting thiab dov muaj xws li ib pab pawg neeg melting rauv, online degassing thiab dross tshem tawm ntaus ntawv, ib lub tshuab slab (cov txheej txheem tseem ceeb thiab cov cim uas txawv nws ntawm lwm cov txheej txheem thev naus laus zis), thiab kub peb-sawv dov. Rectangular slab thickness yog 15-20 millimeters, thiab cov khoom tiav thickness yog 1-2 millimeters.

Kev tswj qhov kub thiab txias yog qhov tseem ceeb. noj 8011 alloy ua piv txwv, qhov kub ntawm casting yog 690-700 ° C, slab kub yog 450-550 ° C, qhov pib dov kub yog 400-500 ° C, thiab qhov kawg dov kub yog 120-250 ° C. Qhov kub ntawm recrystallization ntawm 8011 alloy feem ntau yog 300-350 ° C. Raws li cov txheej txheem no, kev tsim khoom ntawm 8011 aluminium strip muaj qhov cuam tshuam zoo ib yam li cov kub dov coils.

Hais txog qhov zoo ntawm qhov chaw, piv rau nruam cast-rolling, slab nto muaj ntau pitting, thiab tshuaj lom neeg muaj pes tsawg leeg sib cais ntawm qhov chaw yog tshwm sim los ntawm qhov tsis sib xws (qhov concentration ntawm impurities ntawm lub interface yog ntau dua li nyob rau hauv lub cev).

Lub ntsiab tsis xws luag yog manifested raws li tsis zoo nto gloss ntawm aluminium coil, pom tseeb lub teeb thiab tsaus kab txaij, thiab nyob rau hauv mob hnyav, lub xub ntiag ntawm cov kab dub txhob lo lo ntxhuav. Nyob rau hauv xyoo tas los, los ntawm kev siv technology optimization, tshwj tsis yog rau cov khoom uas muaj qhov nruj heev ntawm qhov yuav tsum tau ua xws li CTP phaj puag, iav aluminium, thiab oxidation phaj, feem ntau lwm yam khoom xav tau tuaj yeem ua tiav.

Mechanical zog yog nruab nrab ntawm nruam nruam-rolling thiab kub dov. Txij li thaum lub slab kub tseem nyob saum lub recrystallization kub thaum nkag mus rau qhov kub nruam dov, nws belongs rau qeb kub dov, thiab qhov kev ua tau zoo yog ze rau qhov kub dov.

Kub Rolling VS. Txias Rolling

Kub Rolling

Kub dov yog cov txheej txheem dov ua los ntawm qhov kub ntawm recrystallization. Tsuas tso, aluminium billet yog rhuab thiab ces dov los ntawm ob peb hla, ua raws li cov ntug trimming thiab straightening los ua ib tug txhuas phaj, uas yog hu ua kub dov.

Thaum kub dov, cov hlau muaj siab plasticity thiab tsawg deformation kuj, ho txo ​​lub zog noj ntawm hlau deformation. Kub dov tuaj yeem txhim kho kev ua haujlwm ntawm cov hlau thiab alloys. Nws rhuav tshem cov coarse nplej nyob rau hauv lub xeev cam khwb cia, kho cov kab nrib pleb tseem ceeb, txo los yog tshem tawm cov teeb meem casting, thiab hloov cov qauv cam khwb cia rau hauv cov qauv deformed, li no txhim kho kev ua tau zoo ntawm cov alloy.

Cov txheej txheem ntws yog raws li nram no: aluminium ingot – loj ingot – milling – uniform annealing (tso kev sov) – kub ntxhib dov – kub tiav dov – txias thiab coiling.

Thaum lub sij hawm cua sov txheej txheem thiab kev thauj mus los mus rau qhov ntxhib dov zeb, lub tiaj tus ingot reacts nrog oxygen nyob rau hauv cov huab cua, tsim ib qho oxide nplai rau ntawm qhov chaw. Yog tias txheej oxide tseem nyob ntawm cov khoom siv thaum dov, nws tuaj yeem dov rau hauv cov khoom siv aluminium sab hauv, cuam ​​tshuam rau qhov zoo ntawm qhov khoom kawg. Yog li ntawd, milling yog tsim nyog ua ntej ntxhib dov.
Cov cua kub ntawm lub tiaj tus ingot ua ntej kub ntxhib dov yog siab dua 400 ° C.

Los ntawm kev xav ntawm kev xav, cov txheej txheem kub dov tsis cuam tshuam nrog txias dov. Txawm li cas los, hauv kev tsim khoom tiag, cov chaw ua haujlwm feem ntau ntxiv cov kauj ruam txias kom txo qis kev siv zog, xyuas kom meej qhov tseeb thiab qhov chaw zoo ntawm cov khoom tiav. Feem ntau, lub thickness ntawm slab tom qab ua tiav dov yog tswj los saum toj no 3.0/4.7 millimeters.

Qhov luaj li cas ntawm cov phaj ingot muaj feem xyuam nrog kev txiav txim specifications, tab sis qhov kev sib raug zoo tsis paub.

Txias Rolling

Txias dov yog hais txog dov deformation ntawm hlau hauv qab qhov kub ntawm recrystallization, feem ntau txhais tau hais tias aluminium coils yog dov ncaj qha rau ntawm chav tsev kub yam tsis muaj cua sov.

Cov txheej txheem ntws yog raws li nram no: cam khwb cia slab – txias thiab coiling – kub tiav dov – txias thiab coiling – txias dov.

Txawm hais tias aluminium coil yuav sov rau qhov kov tom qab txias dov, nws tseem hu ua txias dov.

Muab piv rau kub dov, txias dov muaj qhov zoo hauv qab no:

1. Tsawg ua haujlwm kub, uas ua rau qhov tseeb qhov ntev thiab cov tuab tuab ntawm qhov txias-dov aluminium phaj;
2. Muaj peev xwm tsim cov ntaub ntawv nyias nyias uas tsis tuaj yeem tsim los ntawm kub dov;
3. Superior nto zoo ntawm cov khoom txias-dov, dawb los ntawm qhov tsis xws luag xws li pitting thiab oxide hlau nplai suav nrog feem ntau pom hauv cov khoom kub-kuav los tiag, uas yog qhov zoo rau kev ua haujlwm tom ntej;
4. Cold-rolled phaj coils muaj cov cuab yeej zoo heev thiab cov txheej txheem, xws li siab zog, tsawg tawm los txwv, thiab zoo sib sib zog nqus kos duab;
5. Kev ua haujlwm siab ntau lawm vim muaj peev xwm ua tiav high-speed dov thiab puv nruam dov.

Tsev txuas ntxiv

Koj puas paub qhov feem pua ​​​​ntawm cov khoom seem aluminium hauv cov qib alloy sib txawv thaum lub sij hawm melting?
Cov qib feem ntau ntxiv cov khoom seem aluminium!

• 1070 thiab saum toj no ntshiab txhuas tsis tuaj yeem ntxiv cov khoom seem aluminium thiab tsuas yog tsim nrog cov ntshiab txhuas ingots. Lub qhov cub melting kuj yuav tsum tau ntxuav, thiab feem ntau, factories tsis txais kev txiav txim tshwj tsis yog tias lawv loj.
• Qhov seem aluminium piv rau 3104/3105 alloy tuaj yeem ncav cuag 70%-80%;
• 1-series ntshiab txhuas tsuas yog ntxiv 1-series seem txhuas;
• Rau 3/4/5/6/8 series, qhov tshwj xeeb seem aluminium ntxiv piv yog teeb tsa raws li lub Hoobkas cov txheej txheem tswj thiab cov qauv tshuaj lom neeg, nrog ib tug dav seem aluminium piv ntawm 40%.

Ua tsaug rau koj lub sijhawm thiab mloog.