3000 letoto la aluminium lakane poleiti motsoako tšepe
I. Material Science Basics le Alloy Positioning
1.1 Alloy Classification le Matlafatsa Mechanisms
The 3000 letoto la aluminium alloy ke ea Aluminium-Manganese (Al-Mn) Sistimi'me e khetholloa e le a motsoako oa aluminium o sa phekoleheng ka mochesoka har'a litsamaiso tsa machaba tsa mabitso a alloy. Mekhoa ea eona ea mantlha ea ho matlafatsa e itšetlehile ka Tharollo e tiileng ea Tharollole Strain Hardten (sebetsa ka thata).
Letotong lena, Manang's (Mong) e sebetsa e le ntho ea mantlha ea alloying. Radius ea eona ea athomo e kholo ho feta ea aluminium (Al). Ha liathomo tsa Mn li qhibiliha ka har'a lesela le bohareng la sefahleho la matrix a aluminium, li baka tšitiso ea lithapo. Ho khopama hona ha ho sitise motsamao oa dislocation feela, ka hona ho eketsa haholo matla a lihlahisoa le matla a ho tsitsa mocheso oa kamore, empa hape le ho feta ho ntlafatsa thepa ea mochine ka kakaretso ea thepa ka ho hloekisa sebopeho sa lijo-thollo.
1.2 Thepa ea Motheo ea 'Mele le ea Lik'hemik'hale
- Botenya: Hoo e ka bang 2.73 g/cm³ (e phahame hanyane ho feta 2.70 g/cm³ bakeng sa aluminium e hloekileng).
- Mefuta e mengata: Hoo e ka bang 643°C – 654°C.
- Thermal Conductivity: Hoo e ka bang 192 W /(M · h), ho sebetsa hantle lits'ebetsong tsa ho tlosa mocheso.
- Thepa ea Electrochemical: Ho tloha ka tekanyo e tloaelehileng ea li-electrode tsa manganese (-1.18V) e batla e le haufi le ea aluminium (-1.66V), tharollo e tiileng e entsoeng pakeng tsa bona ha e hlahise phapang e kholo ea bokhoni nakong ea ho senyeha ha electrochemical. Sena se fana ka 3000 letoto aluminium metsoako e babatsehang ho hanyetsa microstructural ho corrosion ea sebakeng seo (joalo ka likoti le mofero).
II. Tlhahlobo e Tebileng ea Kereiti ea Core le Papiso ea Parameter
The 3000 letoto la lihlooho tse akarelletsa 'maloa derivative limaraka. Liphapang tsa bona tsa ts'ebetso li khethoa haholo-holo ka ho arola likarolo tsa mohlala (joalo ka Magnesium, koporo, le silicon). Se latelang ke tlhahlobo e tebileng ea limaraka tse tloaelehileng le papiso e qaqileng ea paramethara.
2.1 Papiso ea Litšobotsi tsa Bohlokoa tsa Kereiti
| Keletso | Likarolo tse ka Sehloohong tsa Tlhaho | Lintho tsa mantlha tsa Mechini | Maemo a Tloaelehileng a Kopo |
|---|---|---|---|
| 3003. | Mong (1.0~1.5%) | Molemo ka ho fetisisa sebopeho ka kakaretso. E na le tekanyo e ntle ea ho taka e tebileng le ductility. | Cookware, mapheoana a futhumatsang mocheso, litanka tsa mafura, matšoao a tsela, likarolo tsa setempe. |
| 3004. | Mong (1.0~1.5%) + Mg (0.8~1.3%) | Mahareng-Phahameng Matla. Keketso ea magnesium e fana ka matla a bohlokoa a tharollo e tiileng. | 'Mele ea lino tse tahang, marulelo a moaho wa maemo a hodimo/mabota, sekoaelo se khanyang. |
| 3104. | Mong (0.8~1.4%) + Mg (0.8~1.3%) | Tekanyo ea sebopeho se phahameng le matla. Hangata e sebelisoa bakeng sa mekhoa e matla ea ho roala marako. | E sebelisoa haholo indastering ea makotikoting (E.g., 'mele ea senokoane). |
| 3105. | Mong (0.3~0.8%) + Mg (0.2~0.8%) + Cu (0.05~0.25%) | E babatsehang holim'a barbotage adhesion. Ho qothisana lehlokoa, matla a itekanetseng. | Ho haha mekhoa ea marulelo / mabota, siling, foufatsa, likatiba tsa botlolo. |
| 3005. | Mong (1.0~1.5%) + Mg (0.2~0.6%) | Ho Ts'oaetso e ntlafalitsoeng. Matla a phahameng hanyane ho feta 3003, coatability e ntle. | Ho haha liphanele tsa mabota ka ntle, Li-brackets tsa radiator tsa AC, likarolo tse entsoeng ka spin-a. |
2.2 Lethathamo le qaqileng la Mechanical Property Comparison Table
Hlokomela: Lintlha tse latelang ke litekanyetso tse tloaelehileng; tshebetso ea sebele e angoa ke theknoloji ea ho sebetsana le boemo ba phekolo ea mocheso.
| Molotho oa sehlopha | Khalefo | Matla a tšepe (MPa) | Kotulo Matla (MPa) | Elongation at Break (%) | Ho thatafala (HB) |
|---|---|---|---|---|---|
| 3003. | O | 95 – 130 | ≥ 35 | ≥ 25 | 28 – 35 |
| H14 | 140 – 180 | ≥ 115 | ≥ 8 | 40 – 50 | |
| H18 | 185 – 220 | ≥ 165 | ≥ 4 | 55 – 65 | |
| 3004. | O | 150 – 200 | ≥ 60 | ≥ 17 | 45 – 55 |
| H34 | 220 – 270 | ≥ 170 | ≥ 8 | 65 – 75 | |
| H38 | 290 – 340 | ≥ 250 | ≥ 4 | 85 – 95 | |
| 3105. | O | 90 – 150 | ≥ 35 | ≥ 20 | 25 – 35 |
| H24 | 130 – 180 | ≥ 105 | ≥ 8 | 40 – 50 | |
| 5052. (Sehlopha sa Taolo) | H32 | 210 – 260 | ≥ 130 | ≥ 12 | 60 – 70 |
III. Microstructure le Mosebetsi o Thatafatsang Boitšoaro
3.1 Sehlahisoa se Thatafatsang Mosebetsi (n-boleng) le Plastic Strain Ratio (r-boleng)
Lisebelisoa tse peli tsa mantlha li bohlokoa ha ho hlahlojoa moeli oa ho etsa 3000 Series sauminum Alloys:
- Sehlahisoa se Thatafatsang Mosebetsi (n-boleng): 3000 letoto (haholo-holo 3003-O) e bonts'a boleng bo batlang bo le holimo ba n, ho bolelang hore ha deformation ea polasetiki e ntse e eketseha, matla a sebaka sa sebaka sa thepa a phahama ka potlako. Tšobotsi ena e thibela ka katleho “ho senyeha” nakong ea ho otlolla 'me ke senotlolo sa ho fihlela setšoantšo se tebileng haholo.
- Plastiki Strain Karolelano (r-boleng): E emela bokhoni ba thepa ea ho hanela deformation ka lehlakoreng le botenya. Theko ea r ea 3003 motsoako oa aluminium hangata o moholo ho feta 1, e bontšang hore matla a eona a ho fetola ka har'a sefofane a phahametse bokhoni ba eona bo fokolang ka tataiso ea botenya. Sena se bohlokoa bakeng sa ho etsa likarolo tse thata tsa setempe tse sa robeheng (joalo ka karolo e ka tlase ea li-cookware).
3.2 Anisotropy le phello ea eona
Ka lebaka la hore lijo-thollo li lelefalitsoe haufi le moo ho bilikang teng nakong ea ho koloha le ho etsa litlolo, 3000 letoto la lipoleiti tsa aluminium li bonts'a anisotropy e hlakileng. Nakong ea ts'ebetso e tebileng (joalo ka liteko tsa cupping), anisotropy ena e baka bophahamo bo sa lekanang mathōkong a workpiece, e tsejoang ka tsela e tšoanang “lesale.”
- Mokhoa oa ho laola: Ka ho fetola maemo a chesang a ho roala pele ho bata (joalo ka ho qeta mocheso) le lits'ebetso tsa mahareng tsa annealing, crystallization textures e ka fokotsoa ka katleho, ho laola sekhahla sa tsebe ka hare ho 3% ~ 5%, ka ho etsa joalo e fokotsa setempe le ho ntlafatsa litheko tsa chai.
IV. Mekhoa ea Tlhahiso ea Core le Taolo ea Microstructure
4.1 Ho lahla le Homogenization Annealing
- Ho Lahla Chill ka ho Otloloha (DC): E sebelisetsoa ho hlahisa li-billet tsa boleng bo holimo tse chesang. Ka mor'a ho lahla, annealing e phahameng ea mocheso oa homogenization e tlameha ho etsoa (hangata pakeng tsa 560°C-620°C) ho felisa karohano ea dendritic, spheroidize mekhahlelo e sa leka-lekaneng (joalo ka Al₆Mn), le ho li aba ka mokhoa o ts'oanang ho thibela meaho e nang le lihlopha nakong ea ho pitika ka mor'a moo.
- Continuous Casting Rolling (CC): Tšepe e qhibilihisitsoeng e tiisa ka ho toba likheong tsa 6-10mm pakeng tsa lirolara tse pholileng ka metsi. Mokhoa ona o na le sekhahla sa ho pholisa ka potlako haholo (ho fihla ho mashome a °C/sec), e hlahisang metsoako e metle haholo ea li-intermetallic, empa e na le khatello ea maikutlo e kholo ea ka hare le karohano ea lihlopha. E sebelisoa haholo bakeng sa lipoleiti tse akaretsang tse nang le litlhoko tse tlase bakeng sa ho qeta bokaholimo le ho taka ka botebo.
4.2 Cold Rolling le Intermediate Annealing
Kakaretso ea sekhahla sa phokotso ea serame sa ho 3000 letoto alloys ka hangata fihla 70%-90%. Haeba annealing e mahareng (E.g., 300°C-400°C) e etsoa nakong ea ho pitikoloha ha serame ka bongata, thepa e thata-thata ka recrystallize, ho khutlisetsa polasetiki le boleng ba n. Sena se bohlokoa ka ho khetheha bakeng sa lisebelisoa tse tebileng tse hlokang deformation e kholo (joalo ka ka stock).
V. Ho sebetsa, Ho theha, le Tataiso ea ho Kopanela
5.1 Ho theha Litlhahiso tsa Parameter ea Ts'ebetso
| Mofuta oa Ts'ebetso | Alloy e khothalelitsoeng & Khalefo | Lintlha tsa bohlokoa tsa Ts'ebetso |
|---|---|---|
| Setšoantšo se tebileng. | 3003-O, 3104-O | Die clearance set at 1.1-1.2 makhetlo a lakane botenya; blank holder force e hloka taolo e nepahetseng ho thibela ho sosobana; oli e tahang e phahameng ea viscosity e khothaletsoa. |
| Moea o Kobehang. | 3003-H14, 3004-H34 | Bonyane ba radius e kobehang (R/t) e kgothaletswa ho laolwa pakeng tsa 1.5-2.0. H-tempers e bonts'a springback nakong ea ho khumama; sekhutlo sa matšeliso (hangata 2 ° -5 °) e tlameha ho bolokoa. |
| Ho ohla. | 3003-O | E loketse ho etsa likarolo tsa 'mele tse potolohang joalo ka li-lampshades le lipheletso tse tukang. Sekhahla sa phepelo ha sea lokela ho potlaka haholo ho qoba ho ba mahoashe ka holim'a metsi ho bakoang ke mocheso o feteletseng oa lehae. |
5.2 Litlhaloso tsa Ts'ebetso ea Welding
3000 li-alloys tsa aluminium li na le ts'ebetso e ntle ea ho cheseha 'me ha li na monyetla oa ho phatloha ho chesang.
- TIG Welding (Welding ea Khase ea Tungsten Arc): Phepelo ea motlakase ea AC e khothaletsoa. Mohala oa ho tlatsa o lokela ho khethoa ho lumellana le sebopeho sa tšepe ea motheo, joalo ka ER3003 kapa ER4043 (boleng bo phahameng ba silicon, Ho File Haholo, khanyetso e matla ea mapetso). Lifilimi tsa oksijene holim'a groove le mahlakoreng ka bobeli li tlameha ho tlosoa ka botlalo pele li chesoa (ho ka sebelisoa borashe ba terata ba tšepe e sa hloekang).
- MIG Welding (Welding ea Gas Metal Arc): E loketse bakeng sa tjheseletso e ikemetseng ea lipoleiti tse botenya bo bohareng. Ka lebaka la conductivity e phahameng ea mocheso oa aluminium, ho futhumatsa (60°C-100°C) e hlokehang bakeng sa lipoleiti tse teteaneng (>6mm).
- Resistance Welding (Spot Welding/Seam Welding): Bokaholimo bo na le filimi ea oxide e hanyetsanang haholo e hlokang ho ba “phatlohile” hloeka ka tsela e phahameng hona joale tlas'a khatello ea electrode. Li-electrode tsa alloy tsa koporo tse nang le lipheletso tse chitja li khothaletsoa, ho sebelisa khatello e phahameng ea li-electrode (eketsa ka 30%-50% bapisoa le tšepe).
VI. Mefokolo e Tloaelehileng ea Tlhahiso le Tlhahlobo ea ho Hloka
Nakong ea ts'ebetso le ts'ebeliso ea 'nete, 3000 letoto la lipoleiti tsa aluminium li ka 'na tsa kopana le litaba tse latelang le tharollo:
- Mathata a Stretcher / Lüders Lines
- Phenomenon: Methapo e bonahalang e mahoashe e tšekaletseng e hlaha holim'a lakane ka mor'a ho taka kapa ho kobeha.
- Lebaka: Thepa e ntlafalitse lihlopha tsa Lüders nakong ea ho phunya letlalo ka phokotso e nyane.
- Tharollo: Khetha lipoleiti tse otlolletsoeng esale pele, kapa phethahatso 1%-2% ho bidika ha mohatsela (mohatsela wa bobedi) pele ho setempe ho felisa sehlaba sa chai.
- Lekhapetla la Orange
- Phenomenon: Karolo e ka holimo ea karolo e tebileng e bonts'a mokhoa o thata o tšoanang le lekhapetla la lamunu.
- Lebaka: Lithollo tse tala li mahoashe haholo, kapa likaroloana tsa karolo ea bobeli li ajoa ka tsela e sa tšoaneng, se lebisang ho sekoahelo se sa tsitsang.
- Tharollo: E hloka hore morekisi a fane ka thepa e nang le grained e ntle (ASTM 1-3 Keletso) le ho laola deformation ea setempe ka har'a mefuta e loketseng.
- Khahlano le khatello ea maikutlo (SCC)
- Phenomenon: Brittle fracture tlas'a ketso e kopantsoeng ea khatello ea maikutlo le mecha ea litaba e senyang.
- Lebaka: Khatello e setseng ka mor'a ho sebetsa ka serame ha ea ka ea felisoa.
- Tharollo: Etsa annealing e fokotsang mocheso oa mocheso o tlase likarolong tse sebetsang ka serame (120°C-150°C, ho tshoara bakeng sa 1-2 lihora).
VII. Kalafo ea Bokaholimo le Theknoloji e Khahlanong le Corrosion
7.1 Phekolo ea Phekolo ea Lik'hemik'hale (Chromating / Boikemisetso)
Pele ho penta, 3000 letoto la lipoleiti tsa aluminium hangata li hloka lits'ebetso tsa chromate kapa chrome-free passivation ho hlahisa filimi ea phetoho ea nanoscale.. Filimi ena ha e ntlafatse feela matla a tlamahano pakeng tsa substrate le liaparo tsa manyolo (joalo ka pente ea PVDF ea fluorocarbon) ho fihlella boemo bo tloaelehileng 0 empa hape e sebetsa e le tšitiso ho mekhahlelo ea cathodic, ho fokotsa ho bola ha galvanic.
7.2 Anodizing
Leha e le 3000 letoto ha le hlahise junifomo, lifilimi tse phahameng tsa anodic ha bonolo joalo ka 1000 kapa 6000 letoto, ka mekhoa e khethehileng ea electrolyte (joalo ka tharollo ea sulfuric acid e nang le li-organic acid) le lisebelisoa tsa motlakase tse phahamisitsoeng ka holimo ho AC/DC, 3004 li-alloys le tsona li ka sebelisoa ho etsa li-wear-resistant, litlolo tse sireletsang oxide, ka tloaelo e laoloa ka botenya ba 5-20μm.
VIII. Tsoelo-pele ea Moshoelella le Mekhoa ea Kopo ea Frontier
8.1 Closed-Loop Recycling le Life Cycle Assessment (Lca)
3000 li-alloys tsa aluminium li na le ts'ebetso e ntle haholo ea ho nchafatsa hape. Ha e hlakotsoe 3000 Letoto la aluminium le qhibilihisoa, metsoako ea eona ea tlhaho ea motsoako (haholo-holo manganese) e se ke ea chesa feela empa hape e sebetsa joalo ka li-deoxidizer le li-alloying agents. Ha ho bapisoa le tlhahiso ea pele ea aluminium, ho sebelisa aluminium scrap for remelting ho ka fokotsa tšebeliso ea matla ka ho fihlela 95%, ho etsa 3000 letoto la lisebelisoa tsa benchmark bakeng sa boikoetliso “ho se nke lehlakore ha carbon” Lipakane.
8.2 Likoloi tse Ncha tsa Matla le Theknoloji ea Battery
Ka keketseho ea matla a betri ea matla a matla, litlhoko tsa ho qhala mocheso le polokeho ea lik'hasete tsa betri li ntse li eketseha ka thata. Leveraging eona e ntle mogote conductivity, matla a itekanetseng, le mokhoa o holileng oa ho taka ka botebo, 3003 aluminium alloy butle-butle e nkela litšepe tse ling tsa setso sebaka hore e be lisebelisoa tse ka sehloohong bakeng sa likhetla tsa betri ea matla a lisekoere le lits'ebetso tsa taolo ea mocheso o futhumatsang oa metsi..
8.3 Lipoleiti tsa Aluminium tse nang le Ts'ebetso e Phahameng
Ka theknoloji e kopanyang ea rolling, 3003 aluminium alloy e sebelisoa e le lera la mantlha, apesitsoe ka mahlakoreng ka bobeli ka aluminium e hloekileng (1070) kapa lisebelisoa tsa anode tsa zinki ho etsa lipoleiti tse nang le likarolo tse tharo. Sesebelisoa sena se bonts'a ts'ebetso e ntle ea ts'ireletso ea electrochemical le matla a sebopeho ka lisebelisoa tsa ho ntša letsoai metsing a leoatle le litanka tse khethehileng tsa polokelo ea lik'hemik'hale..
IX. LIPOTSO TSE BOTSOANG HANGATA (LBH)
Q1: Ke khetha joang pakeng tsa 3003 le 3004 lipampiri tsa aluminium?
- A: Haholo-holo e itšetlehile ka matla le kopo. Haeba u etsa likarolo tsa setempe, litanka tsa mafura, kapa sejana sa ho phehatse sa hlokeng matla a phahameng a mochini, khetha 3003. (ts'ebetso e phahameng ea litšenyehelo, Moqomo o motle haholo). Haeba u hloka ho e etsa Libaka tsa Kaho, makotikoti a seno, kapa dikarolo tsa sebopeho tse hlokang ho mamella dikgatello tse itseng, khetha 3004. (e na le magnesium, matla a phahameng, ho hanyetsa khatello ea moea ho molemo).
Q2: Hobaneng ha ka 3003 aluminium poleiti ka mor'a ho kobeha?
- A: Hangata e bakoa ke mabaka a mararo: ① Ho khethiloe khalefo e fosahetseng: Haeba u rekile H18 (bohale bo tletseng), bolelele bo tlase haholo, 'me ho qojoa ho tla etsa hore ho be le petso. Fetolela ho H14 kapa O bohale. ② Tsela ea lijo-thollo: Lipoleiti tsa aluminium li na le tsela e bilikang; ho kobeha perpendicular to rolling direction e sekametseng ho petsoha. Leka ho koba ho bapa le lijo-thollo. ③ Litšila tse feteletseng: Lipoleiti tsa aluminium tse tlase li ka 'na tsa e-na le litšila tse ngata tse bakang brittleness e eketsehileng.
Q3: Ka 3000 Letoto la lipoleiti tsa aluminium li ka sebelisoa metsing a leoatle?
- A: Ha e khothalletsoe ho qoelisoa ka nako e telele. Leha 3000 letoto la lihlooho tse ho feta corrosion manganga ho feta 1000 letoto, khanyetso ea eona ea kutu e tlase haholo ho feta 5000 letoto (Al-mg) li-alloys libakeng tsa metsi a leoatle a nang le chloride-ion. Haeba ho hlokahala, boima liaparo tsa epoxykapa tshireletso ya anode ya sehlabeloe lokela ho sebelisoa.
Q4: Ho na le oli e ngata holim'a poleiti ea aluminium. Na ke hloka ho e hloekisa pele ke e sebelisa?
- A: Ho hloekisa hoa tlama. Oli ea ho roala le oli ea setempe, ha e sa tlosoe, e tla baka porosity ea welding, ho qoela, kapa matheba a anodizing. E kgothaletswa ho sebelisa e khethehileng mohloekisi oa aluminiumkapa acetone bakeng sa ho hlakola. Qoba ho sebelisa lihloekisi tse matla tsa alkaline ho thibela ho bola ha bokaholimo.
Q5: Mokhoa oa ho khetholla kapele pakeng tsa 3003 le 5052 li-aluminium plates?
- A: Mokhoa o hlakileng ka ho fetisisa ke Ho thata. 5052-H32 hangata e thata haholo mme e thata ho koba ka letsoho, e nang le li-springback tsa bohlokoa; 3003-H14 e batla e le bonolo ebile e bonts'a deformation e hlakileng ea polasetiki ha e sebelisoa, e nang le mokokotlo o monyane. Ntle le moo, 5052 e hlahisa litlhase tse fokolang tse bofubedu bo botsho ha ho sila, nakong eo 3003 litlhase li batla li le bosoeu bo khanyang (bakeng sa kahlolo e thusang feela; khetho e nepahetseng e hloka tlhahlobo ea spectral).