Annealing Rolled Copper Foil: Unlocking Enhanced Performance for Advanced Applications

Nyob rau hauv high-tech industries xws li electronics manufacturing, renewable zog, thiab aerospace,dov tooj liab ntawv ciyog khoom plig rau nws zoo heev conductivity, malleability, thiab du nto. Txawm li cas los xij, tsis muaj kev sib tsoo kom zoo, dov tooj liab ntawv ci tuaj yeem raug kev txom nyem los ntawm kev ua hauj lwm hardening thiab residual stress, limiting nws usability. Annealing yog cov txheej txheem tseem ceeb uas ua kom cov txheej txheem microstructuretooj liab ntawv ci, txhim kho nws cov khoom siv rau kev thov. Kab lus no delves rau hauv cov hauv paus ntsiab lus ntawm annealing, nws cuam tshuam rau cov khoom siv, thiab nws qhov haum rau ntau yam khoom siv high-end.

1. Cov txheej txheem Annealing: Hloov Microstructure rau Superior Properties

Thaum lub sij hawm dov txheej txheem, tooj liab muaju yog compressed thiab elongated, tsim ib tug fibrous qauv uas muaj dislocations thiab residual kev nyuaj siab. Qhov kev ua haujlwm tawv tawv no ua rau muaj zog ntxiv, txo cov ductility (elongation ntawm tsuas yog 3% -5%), thiab qis me ntsis ntawm cov conductivity mus txog 98% IACS (International Annealed Copper Standard). Annealing daws cov teeb meem no los ntawm kev tswj hwm "cua sov-tuav-txias" ntu:

1. Theem cua sov: Covtooj liab ntawv ciyog rhuab mus rau nws cov recrystallization kub, feem ntau ntawm 200-300 ° C rau ntshiab tooj liab, kom qhib atomic zog.
2. Tuav Phase: Khaws qhov ntsuas kub no rau 2-4 teev tso cai rau cov nplej tsis sib haum los ua kom tawg, thiab tshiab, equiaxed nplej rau daim ntawv, nrog qhov ntau thiab tsawg ntawm 10-30μm.
3. Theem cua txias: Qhov txias txias qeeb ntawm ≤5 ° C / min tiv thaiv kev qhia txog kev ntxhov siab tshiab.

Txhawb cov ntaub ntawv:

• Annealing kub ncaj qha cuam tshuam cov nplej loj. Piv txwv li, ntawm 250 ° C, nplej ntawm kwv yees li 15μm tau tiav, ua rau lub zog tensile ntawm 280 MPa. Ua kom qhov kub thiab txias rau 300 ° C ua kom cov nplej loj tuaj rau 25μm, txo lub zog rau 220 MPa.
• Lub sijhawm tuav kom tsim nyog yog qhov tseem ceeb. Ntawm 280 ° C, 3-teev tuav kom ruaj khov dua 98% recrystallization, raws li kev txheeb xyuas los ntawm X-ray diffraction tsom xam.

2. Advanced Annealing Equipment: Precision and Oxidation Prevention

Kev siv tau zoo yuav tsum muaj cov roj cua tiv thaiv tshwj xeeb kom ntseeg tau tias qhov kub thiab txias tsis sib xws thiab tiv thaiv oxidation:

1. Rauv Design: Ntau cheeb tsam ywj siab tswj qhov kub thiab txias (piv txwv li, rau thaj chaw teeb tsa) ua kom qhov kub hloov pauv thoob plaws cov ntawv ci qhov dav nyob hauv ± 1.5 ° C.
2. Kev tiv thaiv huab cua: Qhia txog cov nitrogen-purity siab (≥99.999%) lossis nitrogen-hydrogen mix (3%-5% H₂) ua kom cov pa oxygen qis dua 5 ppm, tiv thaiv kev tsim ntawm tooj liab oxides (oxide txheej thickness <10 nm).
3. Conveyance System: Tsis muaj kev sib txhuam cov menyuam thauj khoom tuav cov ntawv ci. Advanced ntsug annealing furnaces tuaj yeem ua haujlwm ntawm qhov nrawm mus txog 120 meters ib feeb, nrog lub peev xwm txhua hnub ntawm 20 tons rau ib lub cub tawg.

Case Study: Tus neeg siv khoom siv lub tshuab hluav taws xob tsis siv hluav taws xob tau ntsib cov oxidation reddish ntawm lubtooj liab ntawv cinto (oxygen ntsiab lus txog 50 ppm), ua rau burrs thaum etching. Hloov mus rau qhov chaw tiv thaiv cua sov ua rau lub ntsej muag roughness (Ra) ntawm ≤0.4μm thiab txhim kho etching tawm los rau 99.6%.

3. Kev Txhim Kho Kev Ua Haujlwm: Los ntawm "Industrial Raw Material" mus rau "Functional Material"

Annealed tooj liab ntawv ciqhia txog kev txhim kho tseem ceeb:

Cov kev txhim kho no ua rau annealed copper foil zoo tagnrho rau:

1. Flexible Printed Circuits (FPCs): Nrog elongation tshaj 20%, cov ntawv ci tiv taus ntau dua 100,000 dynamic dabtsi yog khoov voj voog, ua tau raws li qhov xav tau ntawm cov khoom siv foldable.
2. Lithium-ion roj teeb tam sim no khaws cia: Softer foils (HV<90) tiv thaiv tawg thaum lub sij hawm electrode txheej, thiab ultra-nyias 6μm foils tuav qhov hnyav sib xws li ± 3%.
3. High-Frequency Substrates: Nto roughness hauv qab 0.5μm txo cov teeb liab poob, txo qis qhov poob los ntawm 15% ntawm 28 GHz.
4. Electromagnetic shielding cov ntaub ntawv: Kev coj tus kheej ntawm 101% IACS ua kom muaj kev tiv thaiv kev ua haujlwm tsawg kawg 80 dB ntawm 1 GHz.

4. CIVEN METAL: Pioneering Industry-Leading Annealing Technology

CIVEN METAL tau ua tiav ntau qhov kev nce qib hauv kev siv tshuab annealing:

1. Intelligent Temperature Control: Siv PID algorithms nrog infrared tawm tswv yim, ua tiav qhov ntsuas kub ntawm ± 1 ° C.
2. Txhim kho Sealing: Dual-layer furnace phab ntsa nrog dynamic siab them txo qis roj noj los ntawm 30%.
3. Grain Orientation Control: Los ntawm gradient annealing, ua foils nrog sib txawv hardness raws lawv ntev, nrog localized zog sib txawv mus txog 20%, haum rau complex stamped Cheebtsam.

Kev lees paub: CIVEN METAL's RTF-3 thim rov qab-kho cov ntawv ci, tom qab annealing, tau raug lees paub los ntawm cov neeg siv khoom siv hauv 5G hauv paus chaw nres tsheb PCBs, txo qis dielectric poob rau 0.0015 ntawm 10 GHz thiab nce kev sib kis ntawm 12%.

5. Kev xaus: Lub tswv yim tseem ceeb ntawm Annealing hauv Copper Foil Production

Annealing yog ntau tshaj li "kub-txias" txheej txheem; nws yog kev sib koom ua ke ntawm cov ntaub ntawv science thiab engineering. Los ntawm manipulating microstructural nta xws li grain ciam teb thiab dislocations,tooj liab ntawv ciKev hloov pauv los ntawm "kev ua haujlwm nyuaj" mus rau lub xeev "kev ua haujlwm", txhawb kev nce qib hauv 5G kev sib txuas lus, tsheb hluav taws xob, thiab kev siv thev naus laus zis. Raws li cov txheej txheem annealing hloov zuj zus mus rau kev txawj ntse ntau dua thiab kev ruaj khov - xws li CIVEN METAL txoj kev txhim kho ntawm hydrogen-powered furnaces txo CO₂ emissions los ntawm 40% - dov tooj liab ntawv ci yog npaj los qhib lub peev xwm tshiab hauv cov ntawv thov txiav.