Umlando wamathini e-aluminium
Amathini okupakisha kabhiya wensimbi nesiphuzo anomlando weminyaka engaphezu kwengama-70. Ekuqaleni kwawo-1930, i-United States yaqala ukukhiqiza amathini ensimbi kabhiya. Leli thini elineziqephu ezintathu lenziwe nge-tinplate. Ingxenye engenhla yomzimba wethangi imise okwe-cone, kanti ingxenye engaphezulu inesivalo sethini esimise okwe umqhele. Ukubukeka kwayo okujwayelekile akuhlukile kakhulu kulokho kwamabhodlela engilazi, ngakho-ke umugqa wokugcwalisa ibhodlela lengilazi wawusetshenziselwa ukugcwalisa ekuqaleni. Kwaze kwaba ngawo-1950 lapho umugqa wokugcwalisa ozinikele wawutholakala. Isivalo sethini sashintsha saba yisimo esiyisicaba phakathi nawo-1950s futhi sathuthukiswa saba yisivalo sendandatho ye-aluminium ngeminyaka yawo-1960.
amathini esiphuzo e-aluminium avele ekuqaleni kwawo-1950, futhi amathini e-DWI anezicucu ezimbili aphuma ngokusemthethweni ekuqaleni kwawo-1960. Ukuthuthukiswa kwamathini e-aluminium kuyashesha kakhulu. Ekupheleni kwaleli khulu leminyaka, ukusetshenziswa konyaka sekufinyelele ngaphezu kwezigidi eziyizinkulungwane ezingu-180, okuyisigaba esikhulu kunazo zonke emhlabeni wonke wamakani ensimbi (cishe 400 bhiliyoni). Ukusetshenziswa kwe-aluminium esetshenziselwa ukwenza amathini e-aluminium nakho kukhula ngokushesha. Ngo-1963, kwase kusondele ku-zero. Ngo-1997, ifinyelele amathani ayizigidi ezingu-3.6, okulingana ne-15% yokusetshenziswa okuphelele kwezinto ezihlukahlukene ze-aluminium emhlabeni.
Ubuchwepheshe bokukhiqiza amathini e-aluminium buye bathuthukiswa ngokuqhubekayo.
Sekungamashumi eminyaka, ubuchwepheshe bokukhiqiza amathini e-aluminium buye bathuthukiswa ngokuqhubekayo. Isisindo samathini e-aluminium sehliswe kakhulu. Ekuqaleni kwawo-1960, isisindo sawo wonke amathini e-aluminium ayinkulungwane (okuhlanganisa umzimba wethini nesivalo) safinyelela kumakhilogremu angu-55 (cishe amakhilogremu angu-25), futhi phakathi nawo-1970 sawela kumakhilogremu angu-44.8 (25 kg). Amakhilogremu), yehliswa yaba ngamaphawundi angu-33 (amakhilogremu angu-15) ngasekupheleni kwawo-1990, futhi manje isincishisiwe yaba ngaphansi kwamaphawundi angu-30, okucishe kube ingxenye yaleyo minyaka engu-40 edlule. Eminyakeni engu-20 kusukela ngo-1975 kuya ku-1995, inani lamathini e-aluminium (ama-ounces angu-12 ngomthamo) enziwe ngephawundi elilodwa le-aluminium lenyuke ngo-35%. Ngaphezu kwalokho, ngokwezibalo zenkampani yaseMelika i-ALCOA, impahla ye-aluminium edingekayo kuwo wonke amathini e-aluminium ayinkulungwane yancishiswa isuka kumaphawundi angama-25,8 ngo-1988 yaya kumaphawundi angama-22.5 ngo-1998 yabe isincishiswa yaba ngamaphawundi angama-22.3 ngo-2000. amathini e-aluminium e-United States ehle kakhulu, kusukela ku-0.343 mm ngo-1984 kuya ku-0.285 mm ngo-1992 kanye no-0.259 mm ngo-1998.
Inqubekelaphambili engasindi ku-aluminium can lids nayo isobala. Ugqinsi lwezivalo ze-aluminium zehla zisuka ku-039 mm ekuqaleni kwawo-1960 zaya ku-0.36 mm ngeminyaka yawo-1970, zisuka ku-0.28 mm zaya ku-0.30 mm ngo-1980, zaya ku-0.24 mm maphakathi nawo-1980. Ububanzi besivalo sethini buncishisiwe. Isisindo sezivalo zamathini siqhubekile nokuncipha. Ngo-1974, isisindo samathini ayinkulungwane e-aluminium sasingamakhilogremu angu-13, ngo-1980 sancipha saba ngamakhilogremu angu-12, ngo-1984 sancipha saba ngamakhilogremu angu-11, ngo-1986 sancipha saba ngamakhilogremu angu-10, kwathi ngo-1990 nango-1992 sancipha saba ngamakhilogremu angu-9. 8 amakhilogremu, ancipha afinyelela ku-6.6 pounds ngo-2002. Isivinini sokwenza amathini seyenziwe ngcono kakhulu, ukusuka ku-650-1000cpm (kuphela ngomzuzu) ngeminyaka yawo-1970 kuya ku-1000-1750cpm ngeminyaka yawo-1980 nangaphezulu kuka-2000cpm manje.
Isikhathi sokuthumela: Dec-28-2021