{"id":13121,"date":"2024-12-05T05:48:16","date_gmt":"2024-12-05T13:48:16","guid":{"rendered":"https:\/\/chansmachining.com\/aliaj-de-aluminiu-2219-proprietati-temperaturi-si-aplicatii\/"},"modified":"2024-12-17T12:55:10","modified_gmt":"2024-12-17T20:55:10","slug":"aliaj-de-aluminiu-2219-proprietati-temperaturi-si-aplicatii","status":"publish","type":"post","link":"https:\/\/chansmachining.com\/ro\/aliaj-de-aluminiu-2219-proprietati-temperaturi-si-aplicatii\/","title":{"rendered":"Aliaj de aluminiu 2219: Propriet\u0103\u021bi, temperaturi \u0219i aplica\u021bii"},"content":{"rendered":"\n

Ce este aliajul de aluminiu 2219?<\/strong><\/h2>\n\n

Aliajul de aluminiu 2219 este un aliaj de \u00eenalt\u0103 rezisten\u021b\u0103, rezistent la \u00eemb\u0103tr\u00e2nire<\/strong> format predominant din aluminiu \u0219i cupru, fiind ideal pentru aplica\u021bii care necesit\u0103 calit\u0103\u021bi mecanice superioare \u0219i rezisten\u021b\u0103 la coroziunea sub tensiune.Aliajul de aluminiu 2219 este un aliaj forjat de aluminiu \u0219i cupru cunoscut pentru raportul s\u0103u ridicat rezisten\u021b\u0103\/greutate \u0219i durabilitate<\/strong>. Este utilizat pe scar\u0103 larg\u0103 \u00een aplica\u021bii aerospa\u021biale datorit\u0103 capacit\u0103\u021bii sale de a tolera temperaturi ridicate \u0219i condi\u021bii dificile. Foi, pl\u0103ci, bare \u0219i extrudate sunt aplica\u021bii comune pentru acest aliaj.<\/p>\n\n

Care sunt denumirile \u0219i standardele?<\/strong><\/h2>\n\n

\u00cen plus fa\u021b\u0103 de numele s\u0103u popular, Aliajul de aluminiu 2219 este desemnat ca UNS A92219 \u0219i AlCu6Mn \u00een mai multe standarde, cum ar fi ASTM B209 \u0219i ISO 6361, care specific\u0103 cerin\u021bele aliajelor de aluminiu.<\/p>\n\n

Care este compozi\u021bia chimic\u0103 a aliajului de aluminiu 2219?<\/strong><\/h2>\n\n

Aliajul de aluminiu 2219 este alc\u0103tuit \u00een principal din aluminiu \u0219i cupru, cu c\u00e2teva alte elemente ad\u0103ugate pentru \u00eembun\u0103t\u0103\u021birea calit\u0103\u021bilor mecanice. Componen\u021ba chimic\u0103 normal\u0103 este urm\u0103toarea.<\/p>\n\n

Element<\/strong><\/th>Content (%)<\/strong><\/th><\/tr>
Aluminiu (Al)<\/td>93.0 (min)<\/td><\/tr>
Cupru (Cu)<\/td>5.8 – 6.8<\/td><\/tr>
Mangan (Mn)<\/td>0.2 – 0.4<\/td><\/tr>
Magneziu (Mg)<\/td>0.02 – 0.3<\/td><\/tr>
Zirconiu (Zr)<\/td>0.1 – 0.25<\/td><\/tr>
Titan (Ti)<\/td>0.02 – 0.10<\/td><\/tr>
Fier (Fe)<\/td>Max 0,3<\/td><\/tr>
Siliciu (Si)<\/td>Max 0,2<\/td><\/tr>
Zinc (Zn)<\/td>Max 0,1<\/td><\/tr>
Vanadiu (V)<\/td>0.05 – 0.15<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

Propriet\u0103\u021bile aliajului de aluminiu 2219<\/strong><\/h2>\n\n

Propriet\u0103\u021bi mecanice<\/strong><\/h3>\n\n
    \n
  • – Rezisten\u021ba la trac\u021biune<\/strong>: Variaz\u0103 de la 172 MPa (24,9 ksi) la 476 MPa (69,0 ksi) \u00een func\u021bie de starea de revenire.<\/li>\n\n\n\n
  • – Rezisten\u021ba la rupere<\/strong>: este de aproximativ 290 MPa (42,000 psi).<\/li>\n\n\n\n
  • – Alungirea la rupere<\/strong>: variaz\u0103 de la 3% la 14%, demonstr\u00e2nd ductilitatea aliajului.<\/li>\n\n\n\n
  • –Modul de elasticitate<\/strong>: Aproximativ 73,8 GPa (10.700 ksi), ceea ce indic\u0103 rigiditate.<\/li>\n\n\n\n
  • –Rezisten\u021ba la fractur\u0103<\/strong>: Rezisten\u021ba ridicat\u0103 la fractur\u0103 \u00eempiedic\u0103 apari\u021bia fisurilor.<\/li>\n<\/ul>\n\n

    Propriet\u0103\u021bi fizice<\/strong><\/h3>\n\n
      \n
    • –Densitate<\/strong>strong>: Aproximativ 2,84 g\/cm\u00b3<\/strong> (0,103 lb\/in\u00b3).<\/li>\n\n\n\n
    • – Punct de topire<\/strong>: Variaz\u0103 de la 543\u00b0C la 643\u00b0C (1010\u00b0F la 1190\u00b0F)<\/strong>.<\/li>\n\n\n\n
    • – Conductivitate termic\u0103<\/strong>: \u00centre 116 W\/m-K \u0219i 170 W\/m-K<\/strong>, ceea ce este important pentru aplica\u021biile care implic\u0103 disiparea c\u0103ldurii.<\/li>\n\n\n\n
    • – Capacitate termic\u0103 specific\u0103<\/strong>: Aproximativ 864 J\/kg-K<\/strong>, indic\u00e2nd capacitatea sa de a absorbi c\u0103ldura.<\/li>\n<\/ul>\n\n

      Propriet\u0103\u021bi termice<\/strong><\/h3>\n\n
        \n
      • –Coeficient de dilatare termic\u0103<\/strong>: Aproximativ 22,3 \u03bcm\/m\u22c5\u00b0C.La temperatura camerei, 22,3*\u03bcm*\/*m*\u22c5\u00b0*C* cre\u0219te la 24,1 \u03bcm\/m\u22c5\u00b0C.24,1*\u03bcm*\/*m*\u22c5\u00b0*C* la temperaturi ridicate (aproximativ 250\u00b0C).<\/li>\n\n\n\n
      • – Conductivitate termic\u0103<\/strong>: Variaz\u0103 de la 120 W\/m\u22c5K120*W*\/*m*\u22c5*K*, ideal\u0103 pentru controlul termic \u00een aplica\u021bii aerospa\u021biale.<\/li>\n<\/ul>\n\n

        Rezisten\u021b\u0103 la coroziune<\/strong><\/h3>\n\n

        De\u0219i aliajul de aluminiu 2219 are o rezisten\u021b\u0103 puternic\u0103 la fisurarea prin coroziune sub tensiune \u00een tempera T8, concentra\u021bia sa de cupru \u00eel face mai pu\u021bin rezistent la coroziune dec\u00e2t alte aliaje de aluminiu. Pentru a-i cre\u0219te rezisten\u021ba la coroziune.<\/p>\n\n

          \n
        • -Poate fi placat cu metal pur sau tratat cu acoperiri de protec\u021bie.<\/li>\n<\/ul>\n\n

          Sudabilitate \u0219i prelucrabilitate<\/strong><\/h3>\n\n
            \n
          • -Aliajul de aluminiu 2219 este u\u0219or sudabil; totu\u0219i, sudarea \u00eei poate reduce rezisten\u021ba la coroziune. Pentru a-i restabili calit\u0103\u021bile mecanice, acesta trebuie supus unui tratament termic adecvat dup\u0103 sudare.<\/li>\n\n\n\n
          • -Are o bun\u0103 prelucrabilitate \u00een stare recoapt\u0103, permi\u021b\u00e2nd proceduri eficiente de modelare \u0219i formare.<\/li>\n<\/ul>\n\n

            Gama de temperatur\u0103<\/strong><\/h3>\n\n

            Aliajul de aluminiu 2219 este util pe o gam\u0103 larg\u0103 de temperaturi:<\/p>\n\n

              \n
            • -Eficace de la -452\u00b0F (-269\u00b0C)<\/strong> p\u00e2n\u0103 la aproximativ 600\u00b0F (316\u00b0C)<\/strong>, f\u0103c\u00e2ndu-l potrivit pentru mediile extreme g\u0103site \u00een aplica\u021biile aerospa\u021biale.<\/li>\n<\/ul>\n\n

              Care sunt temperaturile aliajului de aluminiu 2219?<\/strong><\/h2>\n\n

              Aluminiul 2219 este de obicei tratat termic pentru a ob\u021bine propriet\u0103\u021bile dorite. Denumirile temperaturilor ajut\u0103 la definirea prelucr\u0103rii exacte la care a fost supus, afect\u00e2ndu-i propriet\u0103\u021bile mecanice.<\/p>\n\n

                \n
              • -**T87:**Aliamentul este tratat termic pentru a-\u0219i \u00eembun\u0103t\u0103\u021bi propriet\u0103\u021bile mecanice \u0219i apoi prelucrat la rece pentru a cre\u0219te rezisten\u021ba. Acest temperat ofer\u0103 un echilibru \u00eentre rezisten\u021b\u0103 \u0219i ductilitate.<\/li>\n\n\n\n
              • –T851:<\/strong> Acest temperat este similar cu T6, dar include mai multe tehnici de eliberare a tensiunilor. Tehnica de atenuare a tensiunilor, care include \u00eentinderea mecanic\u0103, ajut\u0103 la reducerea tensiunilor interne \u0219i la \u00eembun\u0103t\u0103\u021birea stabilit\u0103\u021bii dimensionale.<\/li>\n\n\n\n
              • –T6:<\/strong> Tempera T6 ofer\u0103 cea mai mare rezisten\u021b\u0103 realizabil\u0103 prin tratament termic. Materialul este mai \u00eent\u00e2i tratat termic \u00een solu\u021bie pentru a dizolva componentele solubile \u0219i apoi \u00eemb\u0103tr\u00e2nit pentru a precipita faze care cresc rezisten\u021ba.<\/li>\n\n\n\n
              • –T3:<\/strong> Este similar cu T6, dar cu mai pu\u021bin\u0103 \u00eemb\u0103tr\u00e2nire artificial\u0103. Aliajul este tratat termic prin solu\u021bie \u0219i apoi l\u0103sat s\u0103 se maturizeze \u00een mod natural. Acest lucru produce o rezisten\u021b\u0103 mai mic\u0103 dec\u00e2t T6, dar o ductilitate \u0219i o tenacitate mai mari.<\/li>\n\n\n\n
              • –T4:<\/strong> Temperamentul T4 este u\u0219or mai puternic dec\u00e2t T3, dar este totu\u0219i mai ductil. Acest temperament permite o rezisten\u021b\u0103 moderat\u0103 \u0219i o prelucrabilitate crescut\u0103.<\/li>\n\n\n\n
              • –O:<\/strong> Temperamentul O \u00eenseamn\u0103 c\u0103 aliajul a fost complet recopt la starea sa cea mai moale, ceea ce \u00eel face mai u\u0219or de lucrat, dar cu o rezisten\u021b\u0103 mult mai sc\u0103zut\u0103 dec\u00e2t celelalte temperamente.<\/li>\n<\/ul>\n\n

                Care sunt aplica\u021biile aliajului de aluminiu 2219?<\/strong><\/h2>\n\n

                Aliajul de aluminiu 2219 este bine cunoscut pentru rezisten\u021ba sa ridicat\u0103, propriet\u0103\u021bile remarcabile de sudare \u0219i rezisten\u021ba la fisurarea prin coroziune sub tensiune. Aceste calit\u0103\u021bi \u00eel fac ideal pentru o gam\u0103 larg\u0103 de aplica\u021bii solicitante din mai multe sectoare. Urm\u0103torul este un rezumat detaliat al principalelor aplica\u021bii ale aliajului de aluminiu 2219.<\/p>\n\n

                Industria aerospa\u021bial\u0103<\/strong><\/h3>\n\n

                Aliajul de aluminiu 2219 este utilizat \u00een principal \u00een industria aerospa\u021bial\u0103. Capacitatea aliajului de a tolera temperaturi ridicate, precum \u0219i natura sa u\u0219oar\u0103 \u00eel fac excelent pentru numeroase componente aerospa\u021biale, inclusiv:<\/p>\n\n

                  \n
                • Rezervoare de combustibil<\/li>\n\n\n\n
                • Carcase pentru motoare de rachet\u0103<\/li>\n\n\n\n
                • Componente structurale<\/li>\n\n\n\n
                • Componente ale navei spa\u021biale<\/li>\n<\/ul>\n\n

                  Aplica\u021bii marine<\/strong><\/h3>\n\n

                  Aliajul de aluminiu 2219 este utilizat \u00een industria naval\u0103 pentru propriet\u0103\u021bile sale de \u00eenalt\u0103 rezisten\u021b\u0103 \u0219i rezistente la coroziune.<\/p>\n\n

                    \n
                  • –Boat Hulls<\/strong><\/li>\n\n\n\n
                  • –Structuri de nav\u0103<\/strong><\/li>\n<\/ul>\n\n

                    Industria transporturilor<\/strong><\/h3>\n\n

                    Aliajul de aluminiu 2219 este utilizat \u00eentr-o varietate de componente de vehicule \u00een industria transporturilor.<\/p>\n\n

                      \n
                    • –Componente pentru aeronave<\/strong><\/li>\n\n\n\n
                    • –Vagoane de cale ferat\u0103 \u0219i remorci<\/strong><\/li>\n<\/ul>\n\n

                      Structuri sudate<\/strong><\/h3>\n\n

                      Sudabilitatea excep\u021bional\u0103 a aliajului de aluminiu 2219 \u00eel face potrivit pentru fabricarea structurilor sudate.<\/p>\n\n

                        \n
                      • – Vase de presiune<\/strong><\/li>\n\n\n\n
                      • – Pun\u021bi \u0219i conducte<\/strong><\/li>\n<\/ul>\n\n

                        Echipamente sportive \u0219i de agrement<\/strong><\/h3>\n\n

                        Aliajul de aluminiu 2219 este u\u0219or \u0219i rezistent, ceea ce \u00eel face ideal pentru o varietate de aplica\u021bii sportive \u0219i recreative.<\/p>\n\n

                          \n
                        • –Cadre de biciclet\u0103<\/strong><\/li>\n\n\n\n
                        • – Echipament de campare<\/strong><\/li>\n<\/ul>\n\n

                          Care sunt avantajele utiliz\u0103rii aliajului de aluminiu 2219?<\/strong><\/h2>\n\n

                          Rezisten\u021b\u0103 ridicat\u0103<\/strong><\/h3>\n\n

                          Cu o rezisten\u021b\u0103 la trac\u021biune de p\u00e2n\u0103 la 455 MPa (66.000 psi) \u00een anumite temperaturi, Aliajul de aluminiu 2219 este renumit pentru rezisten\u021ba sa ridicat\u0103. Acesta se calific\u0103 pentru utiliz\u0103ri care necesit\u0103 materiale care s\u0103 reziste la sarcini \u0219i presiuni majore f\u0103r\u0103 defec\u021biuni.<\/p>\n\n

                          Excelent\u0103 rezisten\u021b\u0103 la fracturi<\/strong>ss<\/h3>\n\n

                          Cu o rezisten\u021b\u0103 excelent\u0103 la fractur\u0103, aliajul poate absorbi energia \u0219i poate opri r\u0103sp\u00e2ndirea fisurilor. Pentru piesele supuse unor sarcini dinamice, aceast\u0103 calitate este foarte important\u0103 pentru fiabilitate \u0219i siguran\u021b\u0103 \u00een utiliz\u0103ri importante.<\/p>\n\n

                          Ma\u0219inabilitate bun\u0103<\/strong><\/h3>\n\n

                          Aliajul de aluminiu 2219 este u\u0219or prelucrabil, permi\u021b\u00e2nd fabricarea eficient\u0103 de forme \u0219i componente complicate. Aceast\u0103 simplitate a prelucr\u0103rii u\u0219ureaz\u0103 procesul de fabrica\u021bie, permi\u021b\u00e2nd realizarea modelelor complicate necesare \u00een aplica\u021biile de \u00eenalt\u0103 performan\u021b\u0103.<\/p>\n\n

                          Sudabilitate<\/strong><\/h3>\n\n

                          Acest aliaj are o bun\u0103 sudabilitate, \u00een special \u00een starea de revenire T8, permi\u021b\u00e2nd \u00eembinarea u\u0219oar\u0103 cu alte materiale. Pot fi utilizate diverse procedee de sudare f\u0103r\u0103 a afecta negativ calit\u0103\u021bile mecanice.<\/p>\n\n

                          Rezisten\u021b\u0103 la fisurarea prin coroziune sub tensiune<\/strong><\/h3>\n\n

                          Aliajul de aluminiu 2219 \u00een tempera T8 are o rezisten\u021b\u0103 ridicat\u0103 la fisurarea prin coroziune sub tensiune, ceea ce \u00eel face ideal pentru componente aerospa\u021biale \u00een medii severe.<\/p>\n\n

                          Rezultate \u00een gam\u0103 larg\u0103 de temperaturi<\/strong><\/h3>\n\n

                          Aliajul \u00ee\u0219i men\u021bine propriet\u0103\u021bile mecanice \u00eentr-o gam\u0103 larg\u0103 de temperaturi de la -269\u00b0C (-452\u00b0F) la 316\u00b0C (600\u00b0F). Aceast\u0103 stabilitate termic\u0103 \u00eel face potrivit pentru aplica\u021bii care sunt supuse unor varia\u021bii extreme de temperatur\u0103.<\/p>\n\n

                          Rezisten\u021b\u0103 la coroziune<\/strong>e<\/h3>\n\n

                          \u00cen timp ce aliajul de aluminiu 2219 este \u00een mod natural rezistent la coroziune datorit\u0103 componentei sale de aluminiu, acesta poate fi \u00eent\u0103rit prin placare sau acoperiri de protec\u021bie, ceea ce \u00eel face adecvat pentru utilizarea \u00een condi\u021bii marine \u00een care apa s\u0103rat\u0103 este frecvent prezent\u0103.<\/p>\n\n

                          Concluzie<\/strong><\/h2>\n\n

                          Aliajul de aluminiu 2219 se distinge ca un aliaj de \u00eenalt\u0103 performan\u021b\u0103 cu rezisten\u021b\u0103 \u0219i durabilitate remarcabile. Temperaturile sale variate \u0219i gama larg\u0103 de utiliz\u0103ri \u00eel fac ideal pentru industria aerospa\u021bial\u0103, auto \u0219i naval\u0103. \u00cen\u021belegerea calit\u0103\u021bilor sale va permite inginerilor s\u0103 utilizeze corect acest aliaj \u00een proiectele lor.<\/p>\n","protected":false},"excerpt":{"rendered":"

                          \u00cen \u00eentreprinderile \u00een care rezisten\u021ba \u0219i greutatea sunt importante, selectarea materialului adecvat poate fi dificil\u0103.<\/p>\n

                          Mul\u021bi ingineri se lupt\u0103 s\u0103 aleag\u0103 un aliaj care s\u0103 combine performan\u021ba \u0219i rezisten\u021ba \u00een medii dificile.<\/p>\n

                          Acest ghid detaliat privind aliajul de aluminiu 2219 investigheaz\u0103 calit\u0103\u021bile, temperaturile \u0219i aplica\u021biile acestuia, furniz\u00e2nd informa\u021bii utile pentru a face judec\u0103\u021bi \u00een cuno\u0219tin\u021b\u0103 de cauz\u0103.<\/p>\n","protected":false},"author":1,"featured_media":13213,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-13121","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-ro"],"yoast_head":"\nAliaj de aluminiu 2219: Propriet\u0103\u021bi, temperaturi \u0219i aplica\u021bii - ChansMachining<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chansmachining.com\/ro\/aliaj-de-aluminiu-2219-proprietati-temperaturi-si-aplicatii\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aliaj de aluminiu 2219: Propriet\u0103\u021bi, temperaturi \u0219i aplica\u021bii - ChansMachining\" \/>\n<meta property=\"og:description\" content=\"\u00cen \u00eentreprinderile \u00een care rezisten\u021ba \u0219i greutatea sunt importante, selectarea materialului adecvat poate fi dificil\u0103. 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