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{"id":3951,"date":"2022-09-10T05:27:22","date_gmt":"2022-09-09T22:27:22","guid":{"rendered":"http:\/\/www.tneutron.net\/blogs\/besi-tuang-ii\/"},"modified":"2022-09-07T10:41:30","modified_gmt":"2022-09-07T03:41:30","slug":"besi-tuang-ii","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/blogs\/besi-tuang-ii\/","title":{"rendered":"Besi Tuang II"},"content":{"rendered":"
4. <\/span>Whiteheart Malleable Cast Iron <\/span><\/b><\/span><\/div>\n
Besi tuang putih (white cast Iron) yang dalam keadaan baik ditempatkan didalam kaleng dimana mereka dikelilingi oleh campuran yang tidak berguna dan bagian partikel yang berguna seperti bijih haematite (haematite ore), Kaleng ini merupakan wadah yang kemudian akan dimasukan kedalam dapur, selanjutnya dipanaskan secara perlahan-lahan hingga 9500C. Setelah diendapkan didalam dapur ini kemudian dikeluarkan dan didinginkan secara perlahan-lahan dan dikeluarkan dari dalam kaleng lalu dibersihkan dan siap untuk proses macining.<\/p>\n

Proses ini memberi pengaruh yang berlawanan dari proses carburising untuk surface hardening, dimana unsur karbon akan bergerak secara menyeluruh hanya dari bagian yang tipis. Bagian inti dari bahan yang tebal akan terdiri atas dua unsur yakni unsur pearlite dan beberapa unsur karbon dalam bentuk nodules. microstruktur dari malleable cast iron ini diperlihatkan pada gambar berikut.<\/p><\/div>\n

\"clip_image001\"<\/a><\/div>\n
Gambar 3.17 Grey Cast Iron : Flakes Graphite pada struktur Pearlite <\/span><\/span><\/div>\n
<\/div>\n
\u00a0<\/span><\/span>\"clip_image002\"<\/a><\/div>\n
Gambar 3.18 White Cast Iron Cementite dan Pearlite <\/span><\/span><\/div>\n
<\/div>\n
\"clip_image003\"<\/a><\/div>\n
Gambar 3.19 White Malleable Cast Iron Ferrite (putih) dan Pearlite <\/span><\/span><\/div>\n
<\/div>\n
\u00a0<\/span><\/span>\"clip_image004\"<\/a><\/div>\n
Gambar 3.20 Black heart Malleable Cast Iron : Ferrite (putih) <\/span><\/span><\/div>\n
<\/div>\n
\u00a0<\/span><\/span>\"clip_image005\"<\/a><\/div>\n
Gambar 3.21 Black heart Malleable Cast Iron Ferrite (hitam)<\/p>\n

Whiteheart malleable cast iron termasuk dalam daftar british standards, yang terdapat dalam dua kelas menurut tegangan tarik dan regangannya. sedangkan angka kekerasannya tergantung ketebalan dan jarak dari permukaan, untuk bahan yang tipis dan bagian permukaan yang tebal mencapai 120 HB dan dapat diitingkatkan hingga 220 HB.<\/p>\n

Whiteheart malleable cast iron digunakan untuk pembuatan socket rangka sepeda motor, steering column housing, wheel hubs, mesin pertanian, garpu (fork), rem (brake), ulir pengarah (thread guides), mesin textile dan lain-lain.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

4. Whiteheart Malleable Cast Iron Besi tuang putih (white cast Iron) yang dalam keadaan baik ditempatkan didalam kaleng dimana mereka dikelilingi oleh campuran yang tidak berguna dan bagian partikel yang berguna seperti bijih haematite (haematite ore), Kaleng ini merupakan wadah yang kemudian akan dimasukan kedalam dapur, selanjutnya dipanaskan secara perlahan-lahan hingga 9500C. Setelah diendapkan didalam …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[3195,3201,3203,3200,3202,3199,3196,3197,3204,3198],"class_list":["post-3951","post","type-post","status-publish","format-standard","hentry","category-besi-tuang","tag-besi-tuang","tag-besi-tuang-cast-iron","tag-besi-tuang-aloi","tag-besi-tuang-kelabu-adalah","tag-besi-tuang-malleable","tag-besi-tuang-mampu-tempa","tag-besi-tuang-nodular","tag-besi-tuang-putih","tag-besi-tuang-tempawan","tag-besi-tuangan"],"_links":{"self":[{"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/posts\/3951","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/comments?post=3951"}],"version-history":[{"count":1,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/posts\/3951\/revisions"}],"predecessor-version":[{"id":8914,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/posts\/3951\/revisions\/8914"}],"wp:attachment":[{"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/media?parent=3951"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/categories?post=3951"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tneutron.net\/blogs\/wp-json\/wp\/v2\/tags?post=3951"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}