Lub tshuaj nrog rau kev siv hauv qhov chaw uas muaj dej soj nqaij

Yog li cas 5xxx-Series Aluminium Planks yog qhov tseem ceeb heev rau kev tiv thaiv ntawm kev pov tseg ntawm dej ntsoov

Kev nyab xeeb ntawm Magnesium-Aluminium Alloys hauv dej ntsoov

Cov planks aluminium los ntawm cov qhov chaw 5xxx series muaj kev npaj rau cov dej muaj ntaub tshuaj ntau heev vim lawv tau ua los ntawm cov tshuaj aluminum thiab magnesium. Yog li magnesium pheej ntau rau ntawm aluminium, nws tsim cov khoom uas muaj kev nyab xeeb thiab tsis raug cuam tshuam los ntawm kev cuam tshuam ntawm cov tshuaj hauv qhov chaw uas muaj ntau cov ions chloride. Qhov no tsis yog li txog kev cuam tshuam ntawm cov tshuaj galvanic dua ob zaug compared rau cov tshuaj copper-based uas peb yuav pom dua li. Qhov txaus siab yog qhov tshuaj no tsis loss its strength thaum submerged, thiab muaj tensile strength sib xyaw rau 380 MPa. Nws yog qhov zoo dua lwm cov tshuaj marine-grade rau kev soj kub lub zog thaum muaj ntau yam khoom. Vim tias tsis muaj cov phase age hardening, tsis muaj cov galvanic cells leej twg uas ua rau cov pits hauv tshuaj. Rau cov neeg kawm ua yam khoom uas yuav tsum nyob hauv dej txhua yam, qhov no ua rau cov 5xxx series muaj kev txaus siab heev rau qhov chaw uas kev nyab xeeb ntawm cov khoom tsis tuaj yeem puas.

Kev Kooj Qeeb ntawm Cov Ntawv Tshuaj Ntawm Qhov Ntawv Ntawm Qhov Ntawv thiab Cov Lus Txhawb Rau Kev Puas Tsuag Ntawm Qhov Ntawv

Thiab rau hauv qhov dej ntawm lub vaj, cov ntawv 5xxx-series yuav kooj qeeb ua qhov ntawv aluminium oxide (Al₂O₃) uas muaj qhov ntsiab thiab yuav tshem tawm qhov ntsiab los ntawm qhov ntawv aluminium uas tsis tau txais kev tshuaj. Qhov ntawv passive no yuav tshem tawm qhov ion chloride los ntawm 70% ntau dua li qhov ntawv aluminium uas tsis tau txais kev tshuaj. Los txhawb rau qhov puas tsuag ntawm qhov ntawv—yog li qhov ntawv uas muaj magnesium ntau dua li 5083—muaj peb qhov kev txhawb uas tau txais kev tso cai:

• Kev Tso Cai Qhov Ntawv : Cov ntawv H116 thiab H321 yuav tshem tawm qhov β-phase (Mg₂Al₃) los ntawm qhov ntawv, uas tshem tawm qhov puas tsuag ntau dua li qhov puas tsuag los ntawm qhov ntawv;
• Cov Ntawv Chromium/Manganese : Cov ntawv no yuav tshem tawm los ntawm qhov ntawv, uas tshem tawm qhov electrochemical threshold rau qhov puas tsuag;
• Kev Tso Cai Qhov Ntawv Uas Muaj Kev Tswj Hwm : Cov kev tswj hwm uas muaj kev tswj hwm yuav tshem tawm qhov dislocation density los ntawm qhov tswj hwm, uas tshem tawm qhov sensitization rau ntau xyoo.

Ntawm lawv cov kev siv no, lawv tuaj yeem tshuam kom muaj qhov sib xyaw ntawm kev siv tau ntau dua 25 xyoo hauv cov chaw uas muaj dej tsis zoo thiab muaj kev puas tsuaj ntau—thiab ua rau cov khoom 5xxx-series yog qhov tseem ceeb rau cov khoom siv hauv qhov chaw nyob hauv dej.

Siv lub tshuab aluminium uas zoo tshaj plaws rau kev siv hauv dej

Cov khoom pov tseg uas tau pov tseg (5083-H116) los ntawm cov khoom pov tseg uas tau pov tseg los ntawm lub tshuab T-Profile: Qhov siab ntawm kev nyab xeeb, kev ua haujlwm, thiab qhov sib xyaw ntawm kev siv tau

Thaum xaiv cov planks, cov kws tshuaj sib xyaw yuav tswj xyuam rau qhov kev ua haujlwm ntawm qhov tseem ceeb thiab qhov yuav siv tau raws li kev sib thaj, thiab qhov txwv no yog qhov uas muaj kev nyuaj siab rau qhov kev sib thaj. Cov ntaub tsis 5083-H116 uas raug rov tso (rolled) muaj kev ua haujlwm zoo heev thiab tuaj yeem tswj tau rau kev puas tsuaj. Cov kab laug ntawm ntaub tsis yog zoo tshaj plaws thiab tau txais lub tswv yim ASTM B209 lossis tswj tau lawm. Peb tau pom tias cov ntaub tsis no tau nyob dua 25 xyoo hauv cov qhov chaw nyuaj siab li cov khoom sib xyaw thiab cov khoom sib xyaw uas muaj kev nyuaj siab heev. Tiamsi muaj qhov tswv yim: kev sib xyaw ntaub tsis no yuav tsum siv cov txheej txheem sib xyaw tshiab uas yuav pab cuam rau kev ntxiv ntau 30% ntawm kev sib xyaw kom compared rau cov ntaub tsis uas raug txhawb (extruded). Ntawd li, cov ntaub tsis uas raug txhawb (extruded) uas muaj lub cev tshwj xeeb (T-shaped) yuav siv qhov cev ntawm nws los pab tau kev tswj kev tshwj xeeb thiab pab cuam rau kev sib xyaw ntau dua thiab kev sib xyaw ntau dua. Kev sib xyaw yuav ntxiv ntau 15-20% ntau dua. Tiamsi, cov kab laug ntawm nws yog ib qho thiab yog qhov uas pab cuam rau kev puas tsuaj ntawm kev nyuaj siab hauv cov qhov chaw uas muaj dej tshuab ntau. Qhov no pab cuam rau kev sib xyaw ntau dua rau kev sib xyaw ntau dua. Yog li rau cov khoom uas tsis tuaj yeem puas tsuaj, cov ntaub tsis uas raug rov tso (rolled plate) yog qhov zoo dua thaum kev ntxiv ntau, thiab rau cov khoom uas muaj kev nyuaj siab heev lossis cov kev sib xyaw uas tsis nyuaj siab heev, cov ntaub tsis uas raug txhawb (extruded profiles) yog qhov zoo dua thaum cov kws tshuaj sib xyaw muaj kev tswj kev nyuaj siab ntau dua thiab muaj kev tswj kev tshwj xeeb ntau dua los pab cuam rau qhov kev nyuaj siab ntawm nws.

FAQ

Yam twg yog qhov ua rau cov khoom sib xyaw aluminium 5xxx-series zoo rau hauv qhov chaw uas muaj dej ntawm qhov tshuab?

cov khoom sib xyaw aluminium 5xxx-series yog zoo rau hauv qhov chaw uas muaj dej ntawm qhov tshuab los ntawm qhov kev sib xyaw ntawm magnesium thiab aluminium uas muaj zog ntau, uas tsis pub rau cov khoom ntawm qhov kev sib xyaw hauv qhov kev sib xyaw ntawm lub zog thiab muaj qhov xwm txheej oxide uas pab tsw hol rau cov khoom thaum muaj dej ntawm qhov tshuab.

Cov lus qhia tshiab uas yuav tsum ua kom txog kev puas tsuaj ntawm qhov kev sib xyaw hauv qhov kev sib xyaw ntawm 5xxx-series yog dab tsi?

Cov lus qhia tshiab yog: tso cov khoom hauv qhov cim tshwj xeeb kom tsis pub cov β-phase muaj kev sib xyaw, ntxiv chromium thiab manganese kom muaj zog ntau rau kev puas tsuaj, thiab tso cov khoom hauv qhov cim tshwj xeeb kom muaj kev sib xyaw ntawm cov khoom uas tsis pub rau kev puas tsuaj.

Yam twg yog qhov sib piv ntawm cov khoom uas tau tshem tawm thiab cov khoom uas tau tshem tawm hauv qhov kev sib xyaw T-profile rau hauv qhov chaw uas muaj dej ntawm qhov tshuab?

Cov khoom uas tau tshem tawm muaj zog ntau rau kev sib xyaw thiab kev puas tsuaj, tab sis yuav tsum siv cov kev tshem tawm uas muaj nqi siab dua. Cov khoom uas tau tshem tawm hauv qhov kev sib xyaw T-profile yog yooj yim thiab nqi nyob rau hauv kev tshem tawm, tab sis yuav muaj kev puas tsuaj ntau dua thaum muaj kev sib xyaw ntawm qhov kev sib xyaw.