D\u00f6k\u00fcm Besleme Ucu, al\u00fcminyum ala\u015f\u0131m\u0131 sekt\u00f6r\u00fcnde haddeleme ekipman\u0131n\u0131n haddeleme silindirlerinin \u00f6n\u00fcnde yer al\u0131r ve erimi\u015f al\u00fcminyum ala\u015f\u0131m\u0131n\u0131 y\u00f6nlendirmek i\u00e7in kullan\u0131l\u0131r.<\/p>\n
Erimi\u015f al\u00fcminyum, arka giri\u015ften D\u00f6k\u00fcm Besleme Ucu\u2019na girer ve ard\u0131ndan \u00f6n \u00e7\u0131k\u0131\u015ftan d\u0131\u015far\u0131 \u00e7\u0131kar; daha sonra silindirlere girer ve burada silindirler taraf\u0131ndan so\u011futulur ve bir d\u00f6k\u00fcm k\u00fct\u00fc\u011f\u00fc haline getirilir.<\/p>\n
Genellikle, d\u00f6k\u00fcm-haddelenmi\u015f k\u00fct\u00fc\u011f\u00fcn geni\u015fli\u011fi, noz\u00fcl\u00fcn \u00e7\u0131k\u0131\u015f geni\u015fli\u011fi taraf\u0131ndan belirlenir. Ekipman kullan\u0131m verimlili\u011fini art\u0131rmak ve i\u015fletme maliyetlerini d\u00fc\u015f\u00fcrmek amac\u0131yla, s\u0131radan d\u00f6k\u00fcm ve haddeleme ekipmanlar\u0131yla \u00fcretilen levhalar\u0131n geni\u015fli\u011fi nispeten fazlad\u0131r ve genellikle 1450 mm\u20131600 mm\u2019ye ula\u015f\u0131r.<\/p>\n
Geni\u015fli\u011fi 800 mm\u2019den az olan d\u00f6k\u00fcm-haddelenmi\u015f levhalarda, \u00fcretimde geleneksel ekipman yap\u0131s\u0131 ve \u00fcretim y\u00f6ntemi kullan\u0131l\u0131rsa, birim \u00fcretim miktar\u0131 d\u00fc\u015fecektir.<\/p>\n
D\u00f6k\u00fcm Besleme Ucu\u2019nun ucu genellikle, s\u0131v\u0131 al\u00fcminyumla temastan kaynaklanan a\u015f\u0131nmaya ve termal \u015foka dayanabilen d\u00fc\u015f\u00fck yo\u011funluklu seramik malzemeden yap\u0131l\u0131r; \u00f6rne\u011fin, gerekli \u015fekle getirilmi\u015f bir seramik elyaf levha gibi.<\/p>\n
Bu malzemelerin yo\u011funlu\u011funun d\u00fc\u015f\u00fck olmas\u0131 nedeniyle, \u0131s\u0131 iletkenlikleri olduk\u00e7a d\u00fc\u015f\u00fckt\u00fcr (genellikle 0,18 W\/mK\u2019dan az); bu da d\u00f6k\u00fcm ucundaki erimi\u015f al\u00fcminyum i\u00e7in belirli bir derecede \u0131s\u0131 yal\u0131t\u0131m\u0131 sa\u011flayabilir.<\/p>\n
Ancak, bir s\u00fcre \u00fcretimden sonra kimyasallar\u0131n etkisiyle korozyona u\u011frayabilir ve a\u015f\u0131nabilirler. Bu durum, u\u00e7 yap\u0131s\u0131nda \u00e7e\u015fitli kirliliklerin olu\u015fmas\u0131na yol a\u00e7abilir ve nihayetinde d\u00f6k\u00fcm i\u015fleminin erken durmas\u0131na neden olabilir.<\/p>\n
D\u00f6k\u00fcm Besleme Ucu genellikle a\u015fa\u011f\u0131daki a\u015f\u0131nma ve y\u0131pranmalara neden olur<\/strong><\/p>\n 1. Tekerlek ucu t\u0131kanmas\u0131 2. Castertip yara izi 3. \u0130nce dalgalanmalar D\u00fczeltme y\u00f6ntemi: \u00d6n tank\u0131n s\u0131v\u0131 seviyesini d\u00fc\u015f\u00fcr\u00fcn, \u00f6n tanktaki al\u00fcminyum s\u0131v\u0131s\u0131n\u0131n s\u0131cakl\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcr\u00fcn, d\u00f6k\u00fcm ucu h\u0131z\u0131n\u0131 art\u0131r\u0131n ve kusurlar\u0131 en aza indirin.
\nD\u00f6k\u00fcm ucu bo\u015flu\u011funda bir t\u0131kanma meydana geldi\u011finde, metalin d\u00f6k\u00fcm ucu a\u00e7\u0131kl\u0131\u011f\u0131n\u0131n t\u00fcm geni\u015fli\u011fi boyunca d\u0131\u015far\u0131 ak\u0131\u015f\u0131 engellenir ve bu da d\u00f6k\u00fcm-haddelenmi\u015f \u015ferit y\u00fczeyinde uzun g\u00f6zenek kusurlar\u0131na yol a\u00e7ar.
\nG\u00f6zenekler, \u00e7\u0131plak g\u00f6zle g\u00f6r\u00fclebilen \u00e7ok k\u00fc\u00e7\u00fck g\u00f6zenekler olabilir.
\nBazen \u015feridin i\u00e7inde bo\u015fluklar bulunur ve \u015feridin y\u00fczeyinde belirgin oksidasyon izleri g\u00f6r\u00fclebilir.
\nD\u00fczeltme y\u00f6ntemi, metalin s\u0131cakl\u0131\u011f\u0131n\u0131 art\u0131rmakt\u0131r. Ayr\u0131ca, metalin engelin etraf\u0131nda kat\u0131la\u015fmas\u0131n\u0131 sa\u011flamak i\u00e7in tamburun d\u00f6n\u00fc\u015f\u00fcn\u00fc k\u0131sa bir s\u00fcre durdurmak ve yeniden \u00e7al\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda engeli d\u0131\u015far\u0131 \u00e7ekmek de m\u00fcmk\u00fcnd\u00fcr.
\nBaz\u0131 durumlarda, t\u0131kanm\u0131\u015f d\u00f6k\u00fcm u\u00e7lar\u0131, nozul plakas\u0131n\u0131n de\u011fi\u015ftirilmesini gerektirir.
\nEtkili ar\u0131tma \u00f6nlemleri, d\u00f6k\u00fcm levhan\u0131n t\u0131kanmas\u0131n\u0131 \u00f6nlemenin etkili bir yoludur.<\/p>\n
\nMetalin kat\u0131la\u015fmas\u0131 a\u011f\u0131z i\u00e7inde veya d\u00f6k\u00fcm\u00fcn a\u011fz\u0131nda meydana gelebilir.
\nMetal, a\u011f\u0131z bo\u015flu\u011funda kat\u0131la\u015f\u0131r; bu durum, \u015feridin geni\u015fli\u011finde bir azalma veya \u015feritte deliklerin olu\u015fmas\u0131 \u015feklinde kendini g\u00f6sterir.
\nBu kusurun nedeni, d\u00f6k\u00fcm kafas\u0131ndan metal s\u0131z\u0131nt\u0131s\u0131 ya da nozul plakas\u0131ndaki metalin d\u00fc\u015f\u00fck s\u0131cakl\u0131\u011f\u0131 olabilir.
\nD\u00fczeltme y\u00f6ntemi \u015fu \u015fekildedir:
\n\u00b7S\u0131z\u0131nt\u0131 ciddiyse, d\u00f6kme nozulu plakas\u0131n\u0131 de\u011fi\u015ftirin
\n\u00b7\u00d6n kutudaki erimi\u015f al\u00fcminyumun s\u0131cakl\u0131\u011f\u0131n\u0131 art\u0131r\u0131n
\n\u00b7D\u00f6k\u00fcm h\u0131z\u0131n\u0131 art\u0131rmak<\/p>\n
\nBu kusur, d\u00f6k\u00fcm-haddelenmi\u015f \u00e7elik \u015feridin y\u00fczeyinde yatay olarak g\u00f6r\u00fclebilen baz\u0131 a\u00e7\u0131k ve koyu \u015feritler \u015feklinde kendini g\u00f6sterir. Bu kusurun belirtileri \u015funlard\u0131r:
\n\u00b7\u015eerit \u00fczerinde yatay koyu \u00e7izgiler bulunmaktad\u0131r
\n\u00b7P\u00fcr\u00fczl\u00fc kenarlar
\n\u00b7Ana motor ak\u0131m de\u011feri d\u00fc\u015fer
\nBu kusurun nedenleri \u015funlard\u0131r:
\n\u00b7Metal seviyesi \u00e7ok y\u00fcksek. A\u015f\u0131r\u0131 metal bas\u0131nc\u0131 nedeniyle, tekerlek ucundaki metal titreyecek ve levhan\u0131n y\u00fczeyinde ince dalgalara neden olacakt\u0131r.
\n\u00b7D\u00fc\u015f\u00fck d\u00f6k\u00fcm h\u0131z\u0131
\n\u00b7Metal s\u0131cakl\u0131\u011f\u0131 \u00e7ok y\u00fcksek<\/p>\n
\n\u0130deal olarak, d\u00f6k\u00fcm ucundan \u00e7\u0131kan s\u0131v\u0131 metalin \u0131s\u0131 da\u011f\u0131l\u0131m\u0131, d\u00f6k\u00fcm ucunun uzunlu\u011fu boyunca m\u00fcmk\u00fcn oldu\u011funca homojen olmal\u0131d\u0131r.<\/p>\n