Yuav ua li cas puncture kuj ntawm pov tseg 3003 aluminium foil ntim khoom noj tau lav los ntawm optimizing cov txheej txheem annealing?

Eco-a. Lub hauv paus rau phau ntawv: Lub teeb yuag xav tau pov tseg 3003 Aluminium Foil Lunch Boxes

Siv tau 3003 aluminium foil su boxes yog cov khoom siv tseem ceeb rau kev noj mov thiab npaj zaub mov, ua tsaug rau lawv cov recyclability, kub-kub kuj (>200°C), thiab zoo formability (2024 kev lag luam loj >8 billion RMB).

Tshuav, Lub teeb nyias nyias tau tshwm sim los ua ib lub tswv yim tseem ceeb rau kev txo nqi thiab kev ruaj ntseg. Thinning lawv cov ntawv txhuas los ntawm cov tsoos 0.08-0.10mm mus rau hauv qab 0.07mm txiav cov khoom siv los ntawm 12%-15%, txo tus nqi ib-unit los ntawm 8%-10%, thiab txo tag nrho cov khoom siv txhuas-ua ke nrog kev lag luam ib puag ncig cov hom phiaj.

Eco-B. Puncture Resistance Challenge Tom qab Thinning

Thinning mus rau hauv qab 0.07mm sharply txo cov puncture kuj ntawm pov tseg 3003 aluminium ntawv ci noj su thawv, tsim kom muaj qhov sib txawv tseem ceeb ntawm kev ua haujlwm.

Tshwj xeeb, thaum tuav cov pob txha-hauv cov khoom xyaw (E.G., spare ribs) los yog cov khoom noj hauv plhaub (E.G., cw), cov npoo ntse ntawm cov khoom no yooj yim tho cov ntawv ci nyias. Cov ntaub ntawv kev lag luam qhia tau hais tias qhov no nce tus nqi xau los ntawm qhov tsis txaus ntseeg 0.5% (rau 0.08mm ntawv ci) mus rau 5% -8% - ib theem uas tsis ua raws li cov neeg siv khoom thiab cov khoom lag luam xav tau.

Eco-C. Core Factor: Microstructure-Mechanical Property Link

Hauv paus, puncture kuj nyob ntawm ob lub peev xwm tseem ceeb ntawm aluminium ntawv ci: “hauv zos deformation kuj” thiab “lub zog nqus peev xwm.” Ob leeg yog txiav txim ncaj qha los ntawm cov ntawv ci microstructure (nplej loj, Al₆Mn theem thib ob faib) thiab ua rau cov khoom siv kho tshuab (zog, elongation, kev nyuaj).

Yog li ntawd, cov txheej txheem annealing - uas tswj hwm microstructure los ntawm kev tswj cov recrystallization thiab nag lossis daus theem thib ob - ua qhov tseem ceeb rau kev ntsuas qhov hnyav thiab puncture tsis kam rau cov thawv noj su.. Yog tsis meej annealing, txawm nyias 3003 foil tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua.

Eco-D. Microstructure Lub luag haujlwm hauv Puncture Resistance

Rau pov tseg 3003 aluminium foil noj su lub thawv, lub microstructure ntawm 3003 aluminium ntawv ci (Al-Mn alloy nrog 1.0%-1.5% Mn) ncaj qha dictates puncture resistance-nrog ob yam tseem ceeb dominating no kev sib raug zoo:

(A) Grain Size Effect

Ua ntej, grain loj muaj qhov cuam tshuam loj rau ob lub zog thiab toughness:

• Cov nplej zoo heev (<3μm): Cov ntawv ci nthuav tawm siab hardness (HV>60) tab sis qis elongation (<8%). Thaum puncture, qhov no ua rau brittle puas, ho nce kev txaus ntshai.

• Coarse nplej ntau dhau (>10μm): Lub zog poob qis dua 130MPa, ua rau cov yas deformation ntau dhau uas ua rau “nkag mus puas” mus rau lub thawv.

• Qhov zoo tshaj plaws: 5-8μm. Qhov sib npaug no muab 140-150MPa tensile lub zog thiab 10%-12% elongation - raws nraim qhov xav tau rau kev txhim khu kev qha noj su lub thawv.

(B) Al₆Mn Second-Phase Effect

Ib xi nkoos, morphology thiab kev faib tawm ntawm Al₆Mn (thawj theem thib ob hauv 3003 ntawv ci) - tswj los ntawm annealing - ntxiv influences puncture resistance:

• Lub xeev txias-dov: Al₆Mn muaj nyob ua ib qho kev daws teeb meem supersaturated, ua rau kev ua haujlwm hnyav hnyav. Elongation ntog hauv qab 6%, ua rau tsis zoo puncture tsis kam.

• Tsis txaus annealing (<280°C): Al₆Mn precipitates zoo li spheres (<0.5μm), tab sis nag lossis daus tsis txaus txwv kev txhim kho lub zog.

• Tshaj annealing (>350°C): Al₆Mn coarsens rau hauv flakes (>2μm), ua raws li kev ntxhov siab concentration. Qhov no txiav puncture quab yuam los ntawm 20%-30%.

Eco-E. Mechanical Property Thresholds

Yuav kom ntseeg tau tias puncture kuj rau 3003 aluminium ntawv ci thinner dua 0.07mm, Cov cuab yeej cuab tam tshwj xeeb yuav tsum tau ua kom tau raws li-txhua qhov kev txhawb nqa tshwj xeeb rau lub thawv noj su lub peev xwm los tiv thaiv tho:

Mechanical Indicator	Threshold Range	Pab txhawb rau Lunch Box Puncture Resistance
Tensile zog (MPa)	140-150	Resistant lub zos stretching, tiv thaiv lub thawv deformation
Yield zog (MPa)	110-120	Txhim kho thawj puncture kuj
Elongation (%, L0 = 50 mm)	10%-12	Absorbs puncture zog (>3J), txo cov dej xau
Vickers Hardness (HV)	50-55	Balances hardness thiab toughness, zam kev tawg tawg

Tshuav, tshaj cov kev pib no undermines kev ua tau zoo. Piv txwv li, kev ntsuam xyuas qhia tau hais tias thaum elongation poob los ntawm 10% rau 7%, lub thawv noj su cov pa xau nce los ntawm 1.2% mus txog 4.5% - nce plaub npaug.

Eco-F. Core Sib tw ntawm Thinning kom qis dua 0.07mm

Nyias 3003 aluminium foil kom qis dua 0.07mm qhia peb qhov kev sib tw tseem ceeb rau cov txheej txheem annealing, txhua rooted nyob rau hauv lub “tuab nyhuv” ntawm nyias foils-cov kev cov nyom no ncaj qha cuam tshuam kev tsim khoom loj thiab kev ua tau zoo sib xws:

(A) Annealing Uniformity Teeb meem

Ua ntej, nyias nyias (<0.07mm) raug kev txom nyem los ntawm qhov tsis sib xws ntawm qhov kub thiab txias gradients nyob rau hauv cov tsoos roller hearth furnaces:

• Cov cheeb tsam sib cuag nrog cov chais yog siab txog 5 ° C kub dua li qhov chaw tsis sib cuag, ua rau 4-6μm sib txawv ntawm cov nplej loj (vs. ib txwm kam rau ua ntawm ≤2μm). Qhov no ua rau ± 15% hloov pauv hauv kev sib tsoo tsis kam.

• Nyias ntawv kuj muaj 12.5% Tsawg tshav kub muaj peev xwm tshaj 0.08mm ntawv ci, ua rau muaj kev pheej hmoo ntawm kev kub hnyiab ntau dhau - uas coarsens Al₆Mn thiab degrades kev ua haujlwm.

(B) Performance Balance Dilemma

Ib xi nkoos, ua kom tiav qhov sib npaug ntawm lub zog thiab elongation ua ib qho teeb meem:

• Nthuav lub sij hawm annealing tshaj 10h los txhawb zog coarsens nplej rau >10μm, txo elongation hauv qab no 8% thiab txwv lub zog nqus.

• Txo qhov kub thiab txias hauv qab 280 ° C kom khaws elongation txiav lub zog rau <130MPa, ua rau cov ntawv ci yooj yim nkag mus.

(C) Tsim-Annealing Conflict

Thib peb, txheej txheem stamping (xav tau rau lub thawv noj su, nrog 5-8mm sib sib zog nqus kos duab) tsis sib haum nrog cov txiaj ntsig annealing:

• Tsis txaus annealing yoojyim residual ua hauj lwm hardening, ua rau cov ntawv ci tawg thaum lub sij hawm stamping-poob tsim cov nqi tsim nyog hauv qab no 85%.

• Tshaj annealing ua rau coarse nplej, uas ua rau “caj dab” thaum tsim. Qhov no ua rau cov phab ntsa tsis sib xws (>0.01mm) thiab tsis muaj zog puncture kuj ntawm nyias cov ntsiab lus.

Eco-G. Optimized Peb-theem Annealing txheej txheem

Txhawm rau daws cov teeb meem no thiab ua tau raws li qhov yuav tsum tau ua ntawm kev sib tsoo ntawm nyias 3003 aluminium ntawv ci, ib qho kev ua kom zoo tshaj peb-theem annealing txheej txheem tau tsim-tsom mus rau qhov zoo tagnrho microstructure ntawm “5-8μm cov + 0.5-1μm kheej kheej Al₆Mn” los ntawm kev tswj xyuas meej:

(A) Theem 1: Preheating (250-280°C, 1-2h)

Theem 1 tsom rau kev tswj cua sov kom tsis txhob muaj kev hloov pauv ntxov ntxov:

• Lub hom phiaj: Ua cua sov qeeb rau 3003 foil's recrystallization kub (~ 250 ° C) tiv thaiv Al₆Mn nag lossis daus, uas yuav cuam tshuam kev tsim microstructure tom ntej.

• Tswj qhov tseem ceeb: A 5-8 ° C / min cua sov tus nqi ua kom ≤2 ° C kub hloov pauv thoob plaws cov ntawv ci tuab - qhov tseem ceeb rau kev sib xws.

• Kev tshwm sim: Mn atoms pib diffuse, easing ua hauj lwm hardening thiab tsa elongation rau 6%-7%.

(B) Theem 2: Tuav Annealing (300-320°C, 3-5h)

Tsiv mus rau theem 2, Lub hom phiaj hloov mus rau qhov sib npaug recrystallization thiab nag lossis daus thib ob:

• Qhov ntsuas kub ntsuas: 300-320°C yog qhov “recrystallization-precipitation balance cheeb tsam”:

• • Recrystalization: Deformed txias dov nplej siab hloov mus rau hauv equiaxed nplej (5-8μm).

• • Al₆Mn nag lossis daus: Fine spherical hais (0.5-1μm) puab, refining nplej ntawm pinning thiab ntxiv dag zog ntawm dispersion.

• Kev kho lub sijhawm: 3h rau 0.06mm ntawv ci thiab 5h rau 0.07mm ntawv ci - kom ntseeg tau 80%-85% Al₆Mn nag lossis daus (tshawb xyuas los ntawm DSC).

• Mechanical tshwm sim: 145-150MPa tensile zog, 11%-12% elongation, thiab HV 52-55—ua tau raws li qhov yuav tsum tau ua.

(C) Theem 3: Nruab nrab-Speed ​​txias (10-15° C/min rau RT)

Theem 3 ua kom tiav cov txheej txheem los ntawm kev kho qhov zoo microstructure:

• Rate xaiv:

• • Txias sai dua 20 ° C / min inhibits Al₆Mn nag lossis daus, ua rau muaj hnub nyoog hardening thiab 1-2% elongation poob.

• • Txias qeeb dua 5 ° C / min coarsens Al₆Mn rau >1μm, tsim kom muaj kev ntxhov siab.

• Yam uas pab: 10-15° C / min txias xauv hauv qhov xav tau microstructure, khaws puncture kuj hloov pauv ≤5%.

• Cov kauj ruam ntxiv: Txhaj nitrogen thaum lub caij txias tiv thaiv oxidation (oxide zaj duab xis ≤0.5μm), zam qhov teeb meem sealing thaum lub sij hawm tsim.

ECO-H. Kev kuaj xyuas

Txhawm rau validate qhov optimized annealing txheej txheem, ib qho kev xeem tau ua los ntawm 0.06mm 3003 aluminium ntawv ci los tsim cov thawv ntim khoom noj uas siv tau pov tseg-nrog peb pawg qauv rau kev sib piv:

(A) Qauv pawg

Ua ntej, tau npaj peb pawg qauv sib txawv:

• Kev sim: Ntawv nyiaj kho nrog cov txheej txheem peb-theem optimized.

• Kev tswj hwm 1: Ntawv nyiaj kho nrog tsoos annealing (320°C × 8 h, 5° C / min txias).

• Kev tswj hwm 2: Ntawv nyiaj kho nrog unoptimized annealing (280°C × 3 h, 20° C / min txias).

(B) Txoj Kev Xeem

Npuab, kev ntsuam xyuas tau tsim los ntsuas kev ua tau zoo:

• Microstructure: Grain loj ntsuas ntawm 500 × metallographic microscope; Al₆Mn morphology soj ntsuam ntawm TEM.

• Cov Khoom Siv Neeg Kho Tshuab: Tensile lub zog / elongation kuaj ntawm universal tshuab; hardness ntawm Vickers tester.

• Puncture kuj:

• • Lab xeem: GB / T 31985-2015 lub hom phiaj, siv 1mm steel koob (5mm/min ceev) ntsuas lub zog thiab lub zog.

• • Kev kuaj xyuas qhov tseeb: Simulated nqa tawm kev vibration (10Hz, 30lub min) nrog pob txha-hauv ribs, suav cov dej xau.

(C) Cov ntsiab lus tseem ceeb

Kawg no, cov qhabnias xeem tau lees paub cov txheej txheem ua kom zoo tshaj plaws:

Sample Group	Loj Loj (μm)	Puncture Force (N)	Leakage Rate (%)
Kev sim	6.2± 1.0	16.2± 0.8 hli	1.1
Kev tswj hwm 1	11.5± 2.3	12.3± 0.6	5.8
Kev tswj hwm 2	4.8± 0.8 hli	17.5± 0.7 hli	4.2

(D) Cov lus xaus

Los ntawm cov txiaj ntsig no:

• Cov pab pawg sim ua tau raws li cov qauv kev lag luam (Cov dej xau ≤ 2%) vim nws zoo tagnrho microstructure.

• Kev tswj tsis tau: Kev tswj hwm 1 tsis muaj puncture quab yuam (coarse nplej), thaum Control 2 tsis muaj zog nqus (qis elongation).

ECO-I. Engineering Application Measures

Rau qhov optimized annealing txheej txheem yuav siv tau nyob rau hauv loj ntau lawm ntawm pov tseg 3003 aluminium foil noj su lub thawv, peb qhov tseem ceeb engineering ntsuas yog qhov tseem ceeb - ntsuas kev ua tau zoo, tus nqi, thiab zoo:

(A) Cov khoom siv kho dua tshiab

Ua ntej, upgrading annealing khoom ua kom uniformity:

• txais yuav “infrared cua sov + Cua kub ncig” rauv: Infrared cua sov tswj qhov kub ntawm ± 1 ° C; 0.5-1m / s huab cua ntws tshem tawm qhov kub ntawm qhov sib txawv (≤ 1 ° C), boosting grain uniformity rau >90%.

• Ntxiv online thickness gauges (0.1μm qhov tseeb) txhawm rau txheeb xyuas qhov hloov pauv uas ua rau tsis sib xws.

(B) Tus nqi tswj

Ib xi nkoos, optimizing txheej txheem tsis txo cov nqi:

• Shorten preheating rau 1-2 teev (vs. 3-4h kev lig kev cai) thiab tuav lub sij hawm rau 3-5h-txiav tag nrho annealing voj voog los ntawm 20%-30% thiab siv zog los ntawm 15%-18%.

• Siv cov khib nyiab rov qab hauv qhov txias kom preheat cov ntawv tuaj, txo lub zog ntawm 80kWh / ton rau 65kWh / ton.

(C) Kev soj ntsuam zoo

Thib peb, kev siv cov kev kuaj xyuas nruj kom ntseeg tau tias muaj qhov sib xws:

• Ua piv txwv txhua daim ntawv yob 3 lub sij hawm (taub hau/middle/tail), siv lub micro puncture tester (1mm koob, 5mm/min) los xyuas kom meej quab yuam ≥15N.

• Kuaj 100 noj su thawv rau ib batch nrog cov pob txha-hauv cov khoom xyaw, yuav tsum tau xau ≤2%.

ECO-J. Xaus thiab Outlook

Hauv cov ntsiab lus, cov tub ntxhais logic tom qab kom ntseeg tau puncture tsis kam rau pov tseg 3003 aluminium foil su boxes thinned mus rau hauv qab 0.07mm lies nyob rau hauv lub optimized peb-theem annealing txheej txheem (250-280° C preheat → 300-320 ° C tuav → 10-15 ° C / min txias). Cov txheej txheem no sib npaug microstructure thiab mechanics kom tau raws li qhov tseem ceeb (zog ≥15N, Cov dej xau ≤ 2%).

Kev sim ua pov thawj lees paub nws tus nqi: 0.06mm foil noj su lub thawv ua tiav 16.2N puncture force, 1.1% leak, thiab 15% kev txuag hluav taws xob-ua tau zoo tshaj li cov txheej txheem ib txwm muaj.

Saib tom ntej, ob qho kev taw qhia yuav txhim kho kev ua tau zoo:

• Tshawb nrhiav “annealing-forming kev koom ua ke” kom txo tau qhov kev hloov pauv ntawm kev ua haujlwm ntawm chav tsev kub cia.

• Siv microalloying (E.G., taug Zr) ua kom zoo nplej, enabling txawm thinner foils (<0.05mm) nrog ntau dua puncture kuj.