{"id":10460,"date":"2022-08-23T06:31:23","date_gmt":"2022-08-23T06:31:23","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=10460"},"modified":"2023-11-15T05:29:33","modified_gmt":"2023-11-15T05:29:33","slug":"what-are-graphite-rings-and-the-graphite-seal-ring","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/id\/what-are-graphite-rings-and-the-graphite-seal-ring\/","title":{"rendered":"Apa itu cincin grafit dan cincin segel grafit?\u00a0"},"content":{"rendered":"

 <\/p>\n

\"cincin<\/p>\n

 <\/p>\n

Cincin grafit dan cincin segel grafit dibuat dari pita grafit fleksibel atau grafit fleksibel dalam bentuk anyaman, kemudian dicetak menjadi produk berbentuk cincin dengan berbagai ukuran. Cocok untuk air panas, suhu tinggi, uap bertekanan tinggi, cairan pertukaran panas, nitrogen, pelarut organik, hidrokarbon, cairan bersuhu rendah, dan media lainnya. Biasanya, produk ini digunakan untuk pengecoran batang aluminium setelah filter busa keramik<\/a><\/em>s, dan sistem pencucian<\/em><\/a>.<\/strong><\/p>\n

Untuk kompresor, pompa, katup, instrumen kimia, alat ukur, dan sebagainya. Tekanan (MPa): 25 Suhu (\u2103): -200\uff5e850 Kecepatan aliran (m\/s): 30 Nilai pH: 0\uff5e14<\/strong><\/p>\n

Bahan-bahan tersebut dibagi menjadi grafit fleksibel dan karbon-cincin grafit<\/a>. Cincin karbon-grafit umumnya digunakan untuk penyegelan komponen mekanis yang berputar. Cincin karbon-grafit memiliki karakteristik tahan suhu tinggi dan tahan korosi.<\/strong><\/p>\n

Kinerja dan karakteristik cincin segel grafit:<\/h2>\n

1. Cincin grafit memiliki sifat pelumasan sendiri yang baik<\/strong><\/p>\n

2. Cincin grafit memiliki koefisien pantulan yang tinggi<\/strong><\/p>\n

3. Cincin grafit dapat dipotong dengan sudut miring 45\u00b0 sesuai kebutuhan pengguna<\/strong><\/p>\n

Bahan grafit karbon untuk segel mekanis secara umum dibagi menjadi beberapa kategori berikut:<\/h2>\n

1. Grafit panggang; dalam arti tertentu, grafit panggang dibagi menjadi grafit karbon keras dan grafit elektrokimia lunak. Keduanya terbuat dari karbon hitam minyak bumi dan karbon hitam jelaga yang dicampur dengan tar, pitch, dan sebagainya, yang kemudian dihancurkan dan dipadatkan menjadi benda mentah, lalu dipanggang pada suhu tinggi<\/strong>.<\/p>\n

Selain perbedaan komposisi bahan, perbedaan utama antara keduanya adalah bahwa bahan yang terakhir perlu melalui proses grafitisasi pada suhu tinggi, yaitu 2400\u20132800 \u2103.<\/strong><\/p>\n

Saat grafit dipanggang, muncul pori-pori (pori-pori 10% hingga 30%) akibat penguapan zat-zat yang mudah menguap dalam bahan pengikat serta proses polimerisasi, dekomposisi, dan karbonisasi bahan pengikat tersebut.<\/strong><\/p>\n

Jika digunakan sebagai cincin penyegel, akan terjadi kebocoran permeabilitas, dan kekuatannya rendah, sehingga perlu dilakukan proses impregnasi untuk mengisi celah dan memperkuatnya; dengan kata lain, setelah melalui proses impregnasi, produk tersebut menjadi kedap udara, dan kekuatannya pun meningkat.<\/strong><\/p>\n

Namun, sifat ketahanan terhadap suhu dan korosi telah menurun dalam berbagai tingkatan. Terdapat tiga golongan utama bahan impregnasi yang digunakan: resin organik, bahan anorganik, dan logam.<\/strong><\/p>\n

2. Grafit terikat resin dibuat dengan cara menghancurkan grafit yang telah disinter, menggunakan resin fenolik atau resin epoksi sebagai pengikat, lalu mencampurnya dan memadatkannya melalui proses pengepresan dan penyinteran hingga menjadi produk. Resin dalam matriks berubah menjadi partikel karbon setelah proses sintering, sehingga grafit ini bersifat kedap gas. Grafit ini memiliki konduktivitas termal yang rendah dan koefisien ekspansi linier yang besar; cocok untuk produksi massal dan memiliki biaya rendah;<\/strong><\/p>\n

3. Produk ini terutama digunakan untuk penyegelan pada beban rendah, seperti pompa air pendingin mobil dan peralatan rumah tangga.<\/strong><\/p>\n

4. Grafit pirolitik; grafit pirolitik dalam negeri dihasilkan melalui proses pirolisis menggunakan propilena dan hidrokarbon lainnya pada suhu tinggi, sehingga uap karbon meresap ke dalam pori-pori bahan karbon-grafit, yang berperan dalam menutup pori-pori tersebut dan menghasilkan material dengan kepadatan tinggi, pori-pori yang sedikit, serta permeabilitas rendah.<\/strong><\/p>\n

5. Bahan grafit karbon murni. Porositasnya kurang dari 1%, kekuatan tekannya 290 MPa, kekerasannya 70\u201375 HS, dan koefisien muai liniernya 0,36 \u00d7 10\u207b\u2076 derajat Celcius. Grafit pirolitik bebas dari senyawa organik dan logam, serta cocok untuk kondisi suhu tinggi dan korosi yang kuat. Karena tidak cocok untuk produksi massal, biayanya pun tinggi.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"

    Graphite rings and the graphite seal ring adopt flexible graphite tape or flexible graphite in woven packing and are molded into ring products of different sizes. Suitable for hot water, high temperature, high-pressure steam, heat exchange liquid, nitrogen, organic solvent, hydrocarbon, low-temperature liquid,…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[26523],"tags":[68767],"yoast_head":"\nWhat are graphite rings, and the graphite seal ring?\u00a0<\/title>\n<meta name=\"description\" content=\"What is the graphite seal ring? 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