Kontrol pimleri.<\/a> Genellikle, erimi\u015f metalin y\u00fcksek s\u0131cakl\u0131\u011f\u0131na dayanabilen bir ate\u015falt\u0131 malzemeden imal edilirler. Malzeme, \u00e7ubu\u011fun ucunda \u2013 yani a\u011f\u0131zl\u0131\u011f\u0131n yuvas\u0131na bask\u0131 uygulad\u0131\u011f\u0131 noktada \u2013 a\u015f\u0131nmay\u0131 \u00f6nleyecek kadar sert olmal\u0131d\u0131r.<\/p>\n![\"Al\u00fcmina](\"http:\/\/www.adtechamm.com\/wp-content\/uploads\/2018\/03\/20180302Alumina-Ceramic-Porcelain-Rod-Control-Pin.jpg\" "\\"Al\u00fcmina")
<\/p>\n
En yayg\u0131n olarak kullan\u0131lan malzemelerden biri yo\u011fun erimi\u015f silikad\u0131r (DF\u2019S). Bu malzeme olduk\u00e7a dayan\u0131kl\u0131d\u0131r ve iyi termal \u015fok \u00f6zelliklerine sahiptir; ancak silika, s\u0131v\u0131 al\u00fcminyum taraf\u0131ndan \u0131slat\u0131l\u0131r ve a\u015f\u0131n\u0131r; bu nedenle bu malzemeden yap\u0131lm\u0131\u015f kontrol pimlerinin, \u00f6rne\u011fin bor nitr\u00fcr gibi yap\u0131\u015fmaz bir koruyucu kaplama ile donat\u0131lmas\u0131 gerekir.
\nBu kaplama s\u0131k s\u0131k yeniden uygulanmal\u0131d\u0131r (\u00f6rne\u011fin, her bir veya iki d\u00f6k\u00fcm i\u015fleminde bir) ve bu nedenle bu t\u00fcr pimlerin bak\u0131m gereksinimi y\u00fcksektir.<\/p>\n
Ayr\u0131ca, DFS olduk\u00e7a dayan\u0131kl\u0131 olmas\u0131na ra\u011fmen \u00e7atlamaya yatk\u0131nd\u0131r ve bu \u00e7atlaklar kullan\u0131m s\u0131ras\u0131nda malzeme boyunca yay\u0131lma e\u011filimindedir.
\nBu durum, zamanla kontrol piminin bir k\u0131sm\u0131n\u0131n kopmas\u0131na ve d\u00f6kme a\u011fz\u0131n\u0131n t\u0131kanmas\u0131na neden olabilir. Buna kar\u015f\u0131 bir \u00f6nlem olarak, DFS malzemesinin i\u00e7ine bazen paslanmaz \u00e7elik bir tel g\u00f6m\u00fcl\u00fcr; b\u00f6ylece kontrol pimi k\u0131r\u0131lsa bile k\u0131r\u0131lan par\u00e7an\u0131n d\u00f6kme a\u011fz\u0131ndan \u00e7\u0131kar\u0131labilmesi sa\u011flan\u0131r.
\nDFS'den \u00fcretilen kontrol pimlerinin bir di\u011fer dezavantaj\u0131, y\u00fcksek \u0131s\u0131 kapasitesine sahip olma e\u011filiminde olmalar\u0131 ve metal d\u00f6k\u00fcm i\u015fleminin ba\u015flamas\u0131ndan \u00f6nce, erimi\u015f metalin s\u0131cakl\u0131\u011f\u0131na veya bu s\u0131cakl\u0131\u011fa yak\u0131n bir seviyeye getirilmek \u00fczere \u00f6nceden \u0131s\u0131t\u0131lmalar\u0131 gerekmesidir.
\nBu durum, d\u00f6k\u00fcm i\u015fleminin karma\u015f\u0131kl\u0131\u011f\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131rmakta ve s\u0131cak kontrol pimini \u00f6n \u0131s\u0131tma f\u0131r\u0131n\u0131ndan d\u00f6k\u00fcm a\u011fz\u0131na aktar\u0131rken ciddi bir kaza riskine yol a\u00e7maktad\u0131r. S-P550762c.wpd 7 Ekim 2004.
\nKontrol pimi \u00f6nceden \u0131s\u0131t\u0131lmazsa, erimi\u015f metal kontrol pimi ile temas etti\u011finde kat\u0131la\u015fabilir ve bu da d\u00f6kme a\u011fz\u0131n\u0131 t\u0131kayabilir.<\/p>","protected":false},"excerpt":{"rendered":"
Alumina Ceramic Porcelain Rod Control Pin Control pins. are generally made of a refractory material, which is able to withstand the high temperature of the molten metal. The material must also be hard so as to resin wear on the end of the rod,…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[52],"tags":[957,967],"yoast_head":"\n
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