{"id":7242,"date":"2020-12-25T08:43:11","date_gmt":"2020-12-25T08:43:11","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7242"},"modified":"2020-12-25T08:43:11","modified_gmt":"2020-12-25T08:43:11","slug":"al-sr-master-alloy","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/tr\/al-sr-master-alloy\/","title":{"rendered":"Al-Sr Ana Ala\u015f\u0131m\u0131"},"content":{"rendered":"

De\u011fi\u015ftirilen stronsiyum miktar\u0131 0,02%~0,06% aras\u0131ndad\u0131r; kum d\u00f6k\u00fcm i\u00e7in \u00fcst s\u0131n\u0131r, metal d\u00f6k\u00fcm i\u00e7in ise alt s\u0131n\u0131r esas al\u0131n\u0131r. Stronsiyum genellikle i\u00e7eren Al-Sr ana ala\u015f\u0131m\u0131 \u015feklinde eklenir veya SrF\u2082 + SrCl\u2082 kar\u0131\u015f\u0131k tuz formunda eklenir.<\/p>\n

Bozulma sonras\u0131nda, SrCl\u2082 olu\u015fumunu \u00f6nlemek i\u00e7in klor tuzu ile ar\u0131t\u0131lamaz ve stronsiyum bozulmas\u0131<\/a> etkisi kaybolur. Ar\u0131tma i\u015flemi i\u00e7in yaln\u0131zca argon kullan\u0131labilir.<\/p>\n

Stronsiyumun kaynama noktas\u0131 1380 \u2103 olup, bu de\u011fer sodyumunkinden \u00e7ok daha y\u00fcksektir ve kolayca yanmaz. Kum kal\u0131plaman\u0131n bozulmas\u0131 i\u00e7in ge\u00e7en s\u00fcre 6~8 saate ula\u015fabilece\u011finden, bu maddeye \u201cuzun etkili modifiye edici\u201d ad\u0131 verilir.<\/p>\n

Saf stronsiyum son derece aktiftir. Atmosferde g\u00fc\u00e7l\u00fc bir \u015fekilde oksitlenerek beyaz toz halindeki SrO\u2019ya d\u00f6n\u00fc\u015f\u00fcr. Suyla temas etti\u011finde hidrojeni ayr\u0131\u015ft\u0131r\u0131r. Kerosen veya parafin ya\u011f\u0131 i\u00e7inde saklanmal\u0131d\u0131r. Kullan\u0131mdan \u00f6nce asetonla temizlenmeli ve derhal s\u0131v\u0131 al\u00fcminyumun i\u00e7ine konulmal\u0131d\u0131r. Stronsiyumun bozulmas\u0131n\u0131n dezavantaj\u0131, stronsiyumda SrH bulunmas\u0131d\u0131r; hidrojeni uzakla\u015ft\u0131rmak kolay de\u011fildir ve kal\u0131p reaksiyonu olu\u015fmas\u0131 kolayd\u0131r; bu da genellikle d\u00f6k\u00fcmlerde i\u011fne deli\u011fi olu\u015fumuna neden olur.<\/p>\n

Al-Sr ana ala\u015f\u0131m\u0131n\u0131n bozulmas\u0131, d\u00f6k\u00fcm s\u00fcresinin uzun oldu\u011fu durumlar i\u00e7in uygundur.<\/p>\n

\"Stronsiyum<\/p>\n

Al-Sr ana ala\u015f\u0131m\u0131n\u0131n modifikasyon i\u015flemi genellikle ar\u0131tma i\u015fleminden sonra ger\u00e7ekle\u015ftirilir. Modifiye edicinin erime noktas\u0131 tercihen modifikasyon s\u0131cakl\u0131\u011f\u0131 ile d\u00f6k\u00fcm s\u0131cakl\u0131\u011f\u0131 aras\u0131nda olmal\u0131d\u0131r. Modifikasyon i\u015flemi s\u0131ras\u0131nda s\u0131v\u0131 halde bulunur; bu durum reaksiyonun ilerlemesine elveri\u015flidir. D\u00f6k\u00fcm s\u0131ras\u0131nda ise \u00e7ok kal\u0131n bir c\u00fcruf haline gelir; bu c\u00fcruf kolayca s\u0131yr\u0131labilir ve c\u00fcruf haline gelmez.<\/p>\n

Bozunma s\u0131cakl\u0131\u011f\u0131 ne kadar y\u00fcksek olursa, erimi\u015f al\u00fcminyum ile bozunma maddesi aras\u0131ndaki reaksiyon h\u0131z\u0131 o kadar artar ve gerekli bozunma s\u00fcresi o kadar k\u0131sal\u0131r. Kesin s\u00fcre, deneylerle belirlenir.<\/p>","protected":false},"excerpt":{"rendered":"

The amount of strontium modified is 0.02%~0.06%, the upper limit is taken for sand casting, and the lower limit is taken for the metal type.…<\/p>","protected":false},"author":1,"featured_media":7243,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-7242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAl-Sr Master Alloy for Deterioration -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Strontium is often added in the form of AL-Sr master alloy containing 3%, or added in the form of SrF2+SrCl2 mixed salt form is added.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/tr\/al-sr-master-alloy\/\" \/>\n<meta property=\"og:locale\" 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