{"id":26296,"date":"2025-11-21T09:54:43","date_gmt":"2025-11-21T01:54:43","guid":{"rendered":"https:\/\/sinoextrud.com\/?p=26296"},"modified":"2025-11-21T09:54:43","modified_gmt":"2025-11-21T01:54:43","slug":"na-jakou-teplotu-se-zahriva-hlinik-pred-extruzi","status":"publish","type":"post","link":"https:\/\/sinoextrud.com\/cs\/how-hot-do-you-get-aluminum-before-extrusion\/","title":{"rendered":"Na jakou teplotu se zah\u0159\u00edv\u00e1 hlin\u00edk p\u0159ed extruz\u00ed?"},"content":{"rendered":"

\"Hlin\u00edkov\u00e9
Hlin\u00edkov\u00e9 v\u00fdlisky Ultra-mal\u00fd materi\u00e1l Hlin\u00edkov\u00fd r\u00e1mov\u00fd profil<\/figcaption><\/figure>\n<\/p>\n

P\u0159em\u00fd\u0161leli jste n\u011bkdy, na jakou teplotu je t\u0159eba zah\u0159\u00e1t hlin\u00edkov\u00e9 ingoty, aby proces vytla\u010dov\u00e1n\u00ed prob\u011bhl hladce? P\u0159\u00edli\u0161 n\u00edzk\u00e1 teplota zt\u011b\u017euje tvarov\u00e1n\u00ed. P\u0159\u00edli\u0161 vysok\u00e1 teplota zase p\u0159edstavuje riziko po\u0161kozen\u00ed.<\/p>\n

Hlin\u00edkov\u00e9 sochory se p\u0159ed extruz\u00ed obvykle p\u0159edeh\u0159\u00edvaj\u00ed na teplotu p\u0159ibli\u017en\u011b 400\u2013500 \u00b0C (750\u2013930 \u00b0F), aby se zajistila jejich tv\u00e1rnost, sn\u00ed\u017eilo nap\u011bt\u00ed p\u0159i toku a aby se dos\u00e1hlo rovnom\u011brn\u00fdch, vysoce kvalitn\u00edch extrudovan\u00fdch profil\u016f.<\/strong> <\/p>\n

Nyn\u00ed si to rozeb\u0159eme krok za krokem: jak p\u0159ipravujeme polotovar, pro\u010d mus\u00ed b\u00fdt oh\u0159ev rovnom\u011brn\u00fd, jak sledujeme teplotu a co se stane, kdy\u017e dojde k p\u0159eh\u0159\u00e1t\u00ed.<\/p>\n

Jak\u00e1 teplota p\u0159ipravuje sochory pro vytla\u010dov\u00e1n\u00ed?<\/h2>\n

P\u0159edstavte si studen\u00fd hlin\u00edkov\u00fd polotovar, kter\u00fd dopad\u00e1 na lis a odm\u00edt\u00e1 se deformovat \u2013 to je probl\u00e9m, kter\u00e9mu se chceme vyhnout. <\/p>\n

P\u0159i mnoha extruzn\u00edch operac\u00edch se polotovar p\u0159ed vlo\u017een\u00edm do extruzn\u00edho lisu zah\u0159eje na p\u0159ibli\u017en\u011b 400\u2013500 \u00b0C (asi 750\u2013930 \u00b0F).<\/strong> <\/p>\n

\"Vytla\u010dov\u00e1n\u00ed
Vytla\u010dov\u00e1n\u00ed hlin\u00edku Trubky z hlin\u00edkov\u00e9 slitiny 2024 pro letectv\u00ed a kosmonautiku<\/figcaption><\/figure>\n<\/p>\n

Kdy\u017e jsem poprv\u00e9 \u0159\u00eddil p\u0159\u00edpravu sochor\u016f, zjistil jsem, \u017ee p\u0159esn\u00e1 c\u00edlov\u00e1 teplota z\u00e1vis\u00ed na slitin\u011b, velikosti a extruzn\u00edm stroji. U mnoha b\u011b\u017en\u00fdch slitin, jako jsou 6063 nebo 6061 v extruzi, jeden zdroj uv\u00e1d\u00ed, \u017ee sochory mus\u00ed b\u00fdt p\u0159ed vlo\u017een\u00edm do lisu zah\u0159\u00e1ty na teplotu p\u0159ibli\u017en\u011b 800\u2013925 \u00b0F (zhruba 427\u2013496 \u00b0C). Jin\u00fd zdroj uv\u00e1d\u00ed \u0161ir\u0161\u00ed rozmez\u00ed 400\u2013480 \u00b0C (750\u2013900 \u00b0F) jako v\u00fdchoz\u00ed bod pro oh\u0159ev p\u0159i extruzi.<\/p>\n

Pro\u010d pr\u00e1v\u011b tento rozsah? Proto\u017ee hlin\u00edk mus\u00ed b\u00fdt pevn\u00fd, ale z\u00e1rove\u0148 dostate\u010dn\u011b plastick\u00fd, aby pod tlakem prot\u00e9kal matric\u00ed. Pokud je p\u0159\u00edli\u0161 studen\u00fd, je pot\u0159ebn\u00e1 s\u00edla p\u0159\u00edli\u0161 velk\u00e1 a zvy\u0161uje se po\u010det vad. Pokud je p\u0159\u00edli\u0161 hork\u00fd, hroz\u00ed riziko oxidace, roztaven\u00ed nebo zm\u011bny mikrostruktury. Jeden blog uv\u00e1d\u00ed, \u017ee sochory se obvykle zah\u0159\u00edvaj\u00ed na \u201cp\u0159ibli\u017en\u011b 420\u2013500 \u00b0C\u201d, aby se sn\u00ed\u017eilo nap\u011bt\u00ed p\u0159i toku a zabr\u00e1nilo vzniku trhlin.<\/p>\n

Zde jsou n\u011bkter\u00e9 z hlavn\u00edch faktor\u016f ovliv\u0148uj\u00edc\u00edch c\u00edlovou teplotu:<\/p>\n

Ovliv\u0148uj\u00edc\u00ed faktory<\/h3>\n\n\n\n\n\n\n\n\n
Faktor<\/th>\nJak to ovliv\u0148uje po\u017eadovanou teplotu<\/th>\n<\/tr>\n<\/thead>\n
Typ slitiny<\/td>\nR\u016fzn\u00e9 slitiny maj\u00ed r\u016fzn\u00e9 mezn\u00ed nap\u011bt\u00ed v tahu a teplotn\u00ed rozsahy; slitiny, kter\u00e9 lze tepeln\u011b zpracovat, mohou vy\u017eadovat p\u0159\u00edsn\u011bj\u0161\u00ed kontrolu.<\/td>\n<\/tr>\n
Velikost a tvar polotovaru<\/td>\nV\u011bt\u0161\u00ed pr\u016fm\u011bry se zah\u0159\u00edvaj\u00ed rovnom\u011brn\u011b d\u00e9le; men\u0161\u00ed se zah\u0159\u00edvaj\u00ed rychleji, ale tak\u00e9 rychleji ztr\u00e1cej\u00ed teplo.<\/td>\n<\/tr>\n
Velikost lisu a slo\u017eitost formy<\/td>\nV\u011bt\u0161\u00ed lisy nebo slo\u017eit\u011bj\u0161\u00ed formy mohou vy\u017eadovat vy\u0161\u0161\u00ed teplotu polotovaru, aby se zachovala tekutost a zabr\u00e1nilo se vzniku vad.<\/td>\n<\/tr>\n
\u010cas mezi pec\u00ed a lisem<\/td>\nPokud dojde ke zpo\u017ed\u011bn\u00ed, polotovar vychladne, tak\u017ee m\u016f\u017ee b\u00fdt zapot\u0159eb\u00ed vy\u0161\u0161\u00ed teplota nebo krat\u0161\u00ed doba p\u0159enosu.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Praktick\u00fd tip<\/h3>\n

V\u017edy nastavuji c\u00edlovou teplotu nam\u00e1\u010den\u00ed m\u00edrn\u011b nad minim\u00e1ln\u00ed hodnotu po\u017eadovanou pro snadn\u00e9 vytla\u010dov\u00e1n\u00ed a pot\u00e9 nech\u00e1v\u00e1m kr\u00e1tkou dobu na \u201cusazen\u00ed\u201d, aby j\u00e1dro a povrch polotovaru dos\u00e1hly rovnov\u00e1hy. Jak toti\u017e ukazuje jedna v\u00fdzkumn\u00e1 studie, rozlo\u017een\u00ed teploty uvnit\u0159 polotovar\u016f se m\u011bn\u00ed v z\u00e1vislosti na \u010dase a geometrii.<\/p>\n

Kl\u00ed\u010dov\u00fd poznatek<\/h3>\n

Hlin\u00edkov\u00e9 ingoty byste m\u011bli p\u0159edeh\u0159\u00e1t na teplotu p\u0159ibli\u017en\u011b 400\u2013500 \u00b0C<\/strong> (750\u2013930 \u00b0F) v z\u00e1vislosti na slitin\u011b a podm\u00ednk\u00e1ch, pot\u00e9 je udr\u017eujte na t\u00e9to teplot\u011b, dokud neza\u010dne vytla\u010dov\u00e1n\u00ed.<\/p>\n

<\/svg> P\u0159ed lisov\u00e1n\u00edm se polotovary pro extruzi hlin\u00edku obvykle zah\u0159\u00edvaj\u00ed na teplotu kolem 400\u2013500 \u00b0C.<\/b>Pravda<\/span><\/p>

N\u011bkolik zdroj\u016f uv\u00e1d\u00ed, \u017ee se jedn\u00e1 o b\u011b\u017en\u00fd teplotn\u00ed rozsah pro p\u0159edeh\u0159\u00edv\u00e1n\u00ed hlin\u00edkov\u00fdch sochor\u016f p\u0159ed extruz\u00ed.<\/p><\/div>
\n

<\/svg> Polotovary lze lisovat za studena bez p\u0159edeh\u0159\u00edv\u00e1n\u00ed a dos\u00e1hnout stejn\u00e9 kvality.<\/b>False<\/span><\/p>

Bez p\u0159edeh\u0159\u00e1t\u00ed je hlin\u00edk p\u0159\u00edli\u0161 tuh\u00fd, co\u017e vy\u017eaduje nadm\u011brnou s\u00edlu a m\u016f\u017ee zp\u016fsobit vady.<\/p><\/div> <\/p>\n

Pro\u010d je rovnom\u011brn\u00e9 vyt\u00e1p\u011bn\u00ed tak d\u016fle\u017eit\u00e9?<\/h2>\n

P\u0159edstavte si, \u017ee ma\u010dk\u00e1te horkou \u010dokol\u00e1du, kter\u00e1 je z poloviny rozpu\u0161t\u011bn\u00e1 a z poloviny zmrzl\u00e1 \u2013 l\u00e1me se nerovnom\u011brn\u011b. To se stane p\u0159i nerovnom\u011brn\u00e9m oh\u0159evu sochor\u016f. <\/p>\n

Rovnom\u011brn\u00e9 zah\u0159\u00edv\u00e1n\u00ed zaji\u0161\u0165uje, \u017ee polotovar m\u00e1 konzistentn\u00ed vnit\u0159n\u00ed teplotu, tak\u017ee deformace, povrchov\u00e1 \u00faprava a vlastnosti materi\u00e1lu z\u016fst\u00e1vaj\u00ed b\u011bhem extruze konzistentn\u00ed.<\/strong> <\/p>\n

\"Hlin\u00edkov\u00e9
Hlin\u00edkov\u00e9 vytla\u010dov\u00e1n\u00ed Hlin\u00edkov\u00fd plotov\u00fd panel Profil<\/figcaption><\/figure>\n<\/p>\n

P\u0159i kontrole extruzn\u00edch sochor\u016f se \u010dasto pt\u00e1m: \u201cJe povrch hork\u00fd, ale j\u00e1dro st\u00e1le chladn\u00e9?\u201d To je b\u011b\u017en\u00fd probl\u00e9m. Podle podrobn\u00e9 studie o hlin\u00edkov\u00fdch extruzn\u00edch sochorech mohou teplotn\u00ed gradienty (rozd\u00edly mezi povrchem a st\u0159edem nebo mezi jedn\u00edm koncem a druh\u00fdm) naru\u0161it \u0159\u00edzen\u00ed procesu.<\/p>\n

V t\u00e9to studii auto\u0159i poznamen\u00e1vaj\u00ed, \u017ee radi\u00e1ln\u00ed gradienty v typick\u00fdch sochanech se sn\u00ed\u017e\u00ed na polovinu b\u011bhem des\u00edtek sekund a pod\u00e9ln\u00e9 gradienty b\u011bhem stovek sekund. To znamen\u00e1, \u017ee vnit\u0159ek m\u016f\u017ee zaost\u00e1vat, pokud je doba oh\u0159evu nebo v\u00fddr\u017ee nedostate\u010dn\u00e1.<\/p>\n

D\u016fsledky nerovnom\u011brn\u00e9ho zah\u0159\u00edv\u00e1n\u00ed<\/h3>\n
    \n
  • St\u0159ed m\u016f\u017ee b\u00fdt chladn\u011bj\u0161\u00ed ne\u017e povrch, co\u017e zvy\u0161uje pot\u0159ebnou s\u00edlu a zp\u016fsobuje vnit\u0159n\u00ed vady, jako jsou dutiny nebo praskliny. <\/li>\n
  • Povrch m\u016f\u017ee b\u00fdt ve srovn\u00e1n\u00ed s j\u00e1drem p\u0159eh\u0159\u00e1t\u00fd, co\u017e m\u016f\u017ee zp\u016fsobit povrchov\u00e9 d\u016flky, oxidaci nebo zm\u011bny hranic zrn. <\/li>\n
  • Nerovnom\u011brn\u00e1 teplota vede k nerovnom\u011brn\u00e9 rychlosti vytla\u010dov\u00e1n\u00ed, kol\u00eds\u00e1n\u00ed tlou\u0161\u0165ky st\u011bny a nep\u0159esnosti rozm\u011br\u016f. <\/li>\n
  • M\u016f\u017ee to zp\u016fsobit vznik \u201cstuden\u00fdch z\u00f3n\u201d v extrudovan\u00e9m profilu, kter\u00e9 ovliv\u0148uj\u00ed mechanick\u00e9 vlastnosti a povrchovou \u00fapravu.<\/li>\n<\/ul>\n

    Jak dos\u00e1hnout rovnom\u011brn\u00e9ho oh\u0159evu<\/h3>\n
      \n
    • Pou\u017e\u00edvejte pec s dobrou cirkulac\u00ed a rovnom\u011brn\u00fdmi teplotn\u00edmi z\u00f3nami. <\/li>\n
    • Zajist\u011bte, aby byly polena rozm\u00edst\u011bna tak, aby teplo proudilo rovnom\u011brn\u011b (nebyla naskl\u00e1d\u00e1na p\u0159\u00edli\u0161 t\u011bsn\u011b). <\/li>\n
    • Zajist\u011bte dostate\u010dnou dobu nam\u00e1\u010den\u00ed p\u0159i c\u00edlov\u00e9 teplot\u011b, aby mohlo doj\u00edt k proniknut\u00ed tepla. <\/li>\n
    • Minimalizujte dobu mezi pec\u00ed a lisem, aby nedoch\u00e1zelo k ochlazov\u00e1n\u00ed, zejm\u00e9na na konc\u00edch nebo okraj\u00edch. <\/li>\n
    • Sledujte teplotu v r\u016fzn\u00fdch bodech sochoru, abyste ov\u011b\u0159ili rovnom\u011brnost.<\/li>\n<\/ul>\n

      Moje zku\u0161enost<\/h3>\n

      V jednom projektu jsme zjistili, \u017ee p\u0159edn\u00ed \u010d\u00e1st dlouh\u00e9ho polotovaru byla o 20 \u00b0C chladn\u011bj\u0161\u00ed ne\u017e zadn\u00ed \u010d\u00e1st, proto\u017ee byla d\u00e9le ulo\u017eena v naklada\u010di. Extrudovan\u00fd profil z tohoto polotovaru m\u011bl jemn\u00e9 povrchov\u00e9 linie a ni\u017e\u0161\u00ed mez kluzu. Po p\u0159id\u00e1n\u00ed krytu a zkr\u00e1cen\u00ed doby p\u0159enosu jsme obnovili rovnom\u011brnost a kvalitu.<\/p>\n

      <\/svg> Teplotn\u00ed gradienty uvnit\u0159 polotovaru mohou v\u00e9st k vad\u00e1m p\u0159i vytla\u010dov\u00e1n\u00ed.<\/b>Pravda<\/span><\/p>

      V\u00fdzkum ukazuje, \u017ee radi\u00e1ln\u00ed a pod\u00e9ln\u00e9 teplotn\u00ed rozd\u00edly ovliv\u0148uj\u00ed v\u00fdsledek extruze.<\/p><\/div>
      \n

      <\/svg> Pro kvalitu vytla\u010dov\u00e1n\u00ed je d\u016fle\u017eit\u00e1 pouze povrchov\u00e1 teplota; teplota j\u00e1dra nen\u00ed relevantn\u00ed.<\/b>False<\/span><\/p>

      Teplota j\u00e1dra ovliv\u0148uje plynulost, vnit\u0159n\u00ed vady a kone\u010dn\u00e9 vlastnosti materi\u00e1lu, proto je relevantn\u00ed.<\/p><\/div> <\/p>\n

      Jak p\u0159esn\u011b monitorovat teplotu polotovaru?<\/h2>\n

      Mo\u017en\u00e1 si \u0159eknete: \u201cPou\u017eiju prost\u011b standardn\u00ed teplom\u011br\u201d \u2013 ale p\u0159i extruzi je v s\u00e1zce mnohem v\u00edc a m\u011b\u0159en\u00ed je slo\u017eit\u011bj\u0161\u00ed. <\/p>\n

      P\u0159esn\u00e9 monitorov\u00e1n\u00ed teploty polotovaru \u010dasto vyu\u017e\u00edv\u00e1 bezkontaktn\u00ed pyrometry nebo infra\u010derven\u00e9 senzory s v\u00edce vlnov\u00fdmi d\u00e9lkami, proto\u017ee emisivita hlin\u00edku se m\u011bn\u00ed a konven\u010dn\u00ed kontaktn\u00ed termo\u010dl\u00e1nky nemus\u00ed zachytit gradienty mezi povrchem a j\u00e1drem.<\/strong> <\/p>\n

      \"Hlin\u00edkov\u00e1
      Hlin\u00edkov\u00e1 vytla\u010dovac\u00ed deska<\/figcaption><\/figure>\n<\/p>\n

      P\u0159i nastavov\u00e1n\u00ed na\u0161eho monitorovac\u00edho syst\u00e9mu jsem se nau\u010dil n\u011bkolik v\u011bc\u00ed: za prv\u00e9, hlin\u00edk je reflexn\u00ed a jeho povrchov\u00e1 emisivita (schopnost vyza\u0159ovat infra\u010derven\u00e9 z\u00e1\u0159en\u00ed) se m\u011bn\u00ed v z\u00e1vislosti na oxidaci, povrchov\u00e9 \u00faprav\u011b a teplot\u011b. Jeden firemn\u00ed blog uv\u00e1d\u00ed, \u017ee p\u0159i teplot\u00e1ch nad 500 \u00b0C (930 \u00b0F) doch\u00e1z\u00ed k migraci leguj\u00edc\u00edch prvk\u016f v hlin\u00edku a ke zm\u011bn\u011b povrchov\u00e9ho emisn\u00edho chov\u00e1n\u00ed.<\/p>\n

      Pokud tedy pou\u017e\u00edv\u00e1te infra\u010derven\u00fd teplom\u011br s jednou vlnovou d\u00e9lkou bez kalibrace pro zm\u011bny emisivity, m\u016f\u017eete z\u00edskat nep\u0159esn\u00e9 m\u011b\u0159en\u00ed. Vhodn\u011bj\u0161\u00ed jsou pyrometry s v\u00edce vlnov\u00fdmi d\u00e9lkami nebo pom\u011brn\u00e9 pyrometry.<\/p>\n

      Metody monitorov\u00e1n\u00ed<\/h3>\n\n\n\n\n\n\n\n\n
      Metoda<\/th>\nPopis<\/th>\n<\/tr>\n<\/thead>\n
      IR pyrometr<\/td>\nM\u011b\u0159\u00ed povrchovou teplotu bezkontaktn\u011b. Rychl\u00e9, neinvazivn\u00ed.<\/td>\n<\/tr>\n
      Termo\u010dl\u00e1nek<\/td>\nKontaktn\u00ed senzor, p\u0159esn\u00fd, ale invazivn\u00ed. Riziko po\u0161kozen\u00ed povrchu.<\/td>\n<\/tr>\n
      Term\u00e1ln\u00ed kamera<\/td>\nPoskytuje mapu povrchov\u00e9 teploty. Pou\u017e\u00edv\u00e1 se sp\u00ed\u0161e ve v\u00fdzkumu a v\u00fdvoji nebo p\u0159i \u0159e\u0161en\u00ed probl\u00e9m\u016f.<\/td>\n<\/tr>\n
      Model doby nam\u00e1\u010den\u00ed<\/td>\nPou\u017eijte modely doby p\u0159enosu tepla k odvozen\u00ed rovnom\u011brn\u00e9 vnit\u0159n\u00ed teploty.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Moje tipy pro implementaci<\/h3>\n
        \n
      • Ozna\u010dte polotovar \u010dasov\u00fdm raz\u00edtkem po v\u00fdstupu z pece. <\/li>\n
      • Pou\u017e\u00edvejte pyrometry kalibrovan\u00e9 ka\u017ed\u00fd t\u00fdden. <\/li>\n
      • Odm\u00edtn\u011bte sochory, jejich\u017e teplota klesne p\u0159ed lisov\u00e1n\u00edm o v\u00edce ne\u017e 10 \u00b0C pod c\u00edlovou hodnotu. <\/li>\n
      • V\u017edy m\u011b\u0159te t\u011bsn\u011b p\u0159ed naklada\u010dem, ne d\u0159\u00edve. <\/li>\n<\/ul>\n

        <\/svg> Bezkontaktn\u00ed infra\u010derven\u00e9 pyrometry se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed pro monitorov\u00e1n\u00ed teploty sochor\u016f p\u0159i extruzi.<\/b>Pravda<\/span><\/p>

        Odborn\u00edci z oboru doporu\u010duj\u00ed infra\u010derven\u00e9 pyrometry zejm\u00e9na pro hlin\u00edkov\u00e9 ingoty kv\u016fli zm\u011bn\u00e1m emisivity a hork\u00fdm povrch\u016fm.<\/p><\/div>
        \n

        <\/svg> Jedin\u00e9 m\u011b\u0159en\u00ed povrchov\u00e9 teploty zaru\u010duje, \u017ee cel\u00fd polotovar m\u00e1 rovnom\u011brnou teplotu.<\/b>False<\/span><\/p>

        Povrchov\u00e9 m\u011b\u0159en\u00ed nezaru\u010duje rovnom\u011brnost j\u00e1dra nebo konc\u016f; mohou st\u00e1le existovat vnit\u0159n\u00ed gradienty.<\/p><\/div> <\/p>\n

        M\u016f\u017ee p\u0159eh\u0159\u00e1t\u00ed po\u0161kodit kvalitu polotovaru?<\/h2>\n

        Oh\u0159ev nad c\u00edlovou hodnotu se zd\u00e1 b\u00fdt \u201cbezpe\u010dn\u011bj\u0161\u00ed\u201d, ale ve skute\u010dnosti m\u016f\u017ee p\u0159in\u00e9st \u0159adu dal\u0161\u00edch rizik \u2013 nap\u0159\u00edklad p\u0159eh\u0159\u00e1t\u00ed polotovaru, jako kdy\u017e se sna\u017e\u00edte p\u00e9ct dort p\u0159\u00edli\u0161 dlouho. <\/p>\n

        Ano \u2014 p\u0159eh\u0159\u00e1t\u00ed hlin\u00edkov\u00fdch sochor\u016f (nap\u0159\u00edklad nad ~500 \u00b0C \/ 930 \u00b0F po p\u0159\u00edli\u0161 dlouhou dobu) m\u016f\u017ee v\u00e9st k migraci leguj\u00edc\u00edch prvk\u016f, zm\u011bn\u00e1m povrchu, zv\u00fd\u0161en\u00e9 oxidaci a sn\u00ed\u017een\u00e9 v\u00fdkonnosti materi\u00e1lu v extrudovan\u00e9m profilu.<\/strong> <\/p>\n

        \"Barevn\u011b
        Barevn\u011b eloxovan\u00e9 konstruk\u010dn\u00ed hlin\u00edkov\u00e9 v\u00fdlisky Profil pro okenn\u00ed r\u00e1m Vytla\u010dovan\u00e9 hlin\u00edkov\u00e9 slitiny 6063<\/figcaption><\/figure>\n<\/p>\n

        Vid\u011bl jsem p\u0159\u00edpad, kdy byla \u0161ar\u017ee sochor\u016f p\u0159\u00edli\u0161 dlouho ulo\u017eena v peci nastaven\u00e9 na horn\u00ed hranici rozsahu. Na povrchu vypadaly \u201c\u017ehav\u00e9\u201d a zd\u00e1ly se v po\u0159\u00e1dku, ale lis na vytla\u010dov\u00e1n\u00ed musel vyvinout mnohem v\u011bt\u0161\u00ed tlak a v\u00fdsledn\u00e9 d\u00edly vykazovaly sn\u00ed\u017eenou pevnost v tahu. Pro\u010d? Proto\u017ee leguj\u00edc\u00ed prvky za\u010daly migrovat a mikrostruktura se zm\u011bnila.<\/p>\n

        Specifick\u00e1 rizika p\u0159eh\u0159\u00e1t\u00ed<\/h3>\n
          \n
        • Migrace prvk\u016f slitiny<\/strong>: M\u016f\u017ee zp\u016fsobit slab\u00fd povrch a nerovnom\u011brn\u00e9 mechanick\u00e9 vlastnosti. <\/li>\n
        • Oxidace<\/strong>: Vede k povrchov\u00fdm d\u016flkovitostem a \u0161patn\u00e9mu povrchov\u00e9mu proveden\u00ed. <\/li>\n
        • Zv\u011bt\u0161en\u00ed zrna<\/strong>: V\u011bt\u0161\u00ed zrna sni\u017euj\u00ed mechanickou pevnost. <\/li>\n
        • Nerovnom\u011brn\u00e9 chlazen\u00ed<\/strong>: Hork\u00e9 sochory mohou v n\u011bkter\u00fdch \u010d\u00e1stech ztr\u00e1cet v\u00edce tepla, co\u017e vede k vytvo\u0159en\u00ed nov\u00fdch teplotn\u00edch gradient\u016f. <\/li>\n
        • Opot\u0159eben\u00ed n\u00e1stroje<\/strong>P\u0159\u00edli\u0161 hork\u00e9 polotovary zkracuj\u00ed \u017eivotnost formy.<\/li>\n<\/ul>\n

          Moje doporu\u010den\u00ed<\/h3>\n

          Nikdy nedovol\u00edm, aby teplota povrchu polotovaru p\u0159ekro\u010dila 520 \u00b0C. Pe\u010dliv\u011b sleduji dobu pobytu v peci. V\u0161e, co p\u0159ekro\u010d\u00ed tuto teplotu po p\u0159\u00edli\u0161 dlouhou dobu, je p\u0159ed pou\u017eit\u00edm ozna\u010deno pro mechanick\u00e9 testov\u00e1n\u00ed.<\/p>\n

          <\/svg> P\u0159\u00edli\u0161 dlouh\u00e9 zah\u0159\u00edv\u00e1n\u00ed polotovaru nad c\u00edlovou teplotu m\u016f\u017ee zhor\u0161it vlastnosti slitiny.<\/b>Pravda<\/span><\/p>

          Zdroje uv\u00e1d\u011bj\u00ed, \u017ee p\u0159i teplot\u00e1ch nad 500 \u00b0C doch\u00e1z\u00ed k migraci leguj\u00edc\u00edch prvk\u016f a ke zm\u011bn\u00e1m povrchu, kter\u00e9 zhor\u0161uj\u00ed vlastnosti.<\/p><\/div>
          \n

          <\/svg> Jakmile je polotovar p\u0159eh\u0159\u00e1t\u00fd, nem\u00e1 to vliv na proces vytla\u010dov\u00e1n\u00ed ani na kvalitu fin\u00e1ln\u00edho d\u00edlu.<\/b>False<\/span><\/p>

          P\u0159eh\u0159\u00e1t\u00e9 sochory mohou zp\u016fsobit zv\u00fd\u0161en\u00fd v\u00fdskyt vad, slab\u0161\u00ed mechanick\u00e9 vlastnosti a probl\u00e9my s povrchovou \u00fapravou.<\/p><\/div> <\/p>\n

          Z\u00e1v\u011br<\/h2>\n

          Stru\u010dn\u011b \u0159e\u010deno, db\u00e1m na to, aby na\u0161e hlin\u00edkov\u00e9 ingoty dos\u00e1hly p\u0159ibli\u017en\u011b 400\u2013500 \u00b0C (750\u2013930 \u00b0F)<\/strong> pro optim\u00e1ln\u00ed vytla\u010dov\u00e1n\u00ed. Zaji\u0161\u0165uji rovnom\u011brnou teplotu, aby byl cel\u00fd polotovar p\u0159ipraven\u00fd, pou\u017e\u00edv\u00e1m kvalitn\u00ed monitorovac\u00ed n\u00e1stroje k ov\u011b\u0159en\u00ed tohoto stavu a zabra\u0148uji dlouhodob\u00e9mu p\u0159eh\u0159\u00edv\u00e1n\u00ed nad ~500 \u00b0C. T\u00edmto zp\u016fsobem zaji\u0161\u0165uji plynul\u00fd pr\u016fb\u011bh vytla\u010dov\u00e1n\u00ed, vysokou kvalitu profil\u016f a m\u00e9n\u011b probl\u00e9m\u016f v budoucnu.<\/p>","protected":false},"excerpt":{"rendered":"

          Aluminum Extrusion Ultra-small Material Aluminum Frame Profile Have you ever wondered what temperature you need to heat aluminum billets so that the extrusion process works smoothly? Too low, and it\u2019s hard to shape. Too high, and you risk damage. Aluminum billets are typically pre\u2011heated to about 400\u2011500\u202f\u00b0C (750\u2011930\u202f\u00b0F) before extrusion to ensure they are malleable, […]<\/p>\n","protected":false},"author":6,"featured_media":6235,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-26296","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-custom-mold"],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/26296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/comments?post=26296"}],"version-history":[{"count":0,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/posts\/26296\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media\/6235"}],"wp:attachment":[{"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/media?parent=26296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/categories?post=26296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sinoextrud.com\/cs\/wp-json\/wp\/v2\/tags?post=26296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}