1. Apa wedhi keramik?
wedhi keramik utamané digawe saka mineral ngemot Al2O3 lan SiO2 lan ditambahake karo bahan mineral liyane. Wedhi pengecoran bunder sing digawe kanthi proses bubuk, pelletizing, sintering lan grading. Struktur kristal utama yaiku Mullite lan Corundum, kanthi bentuk gandum sing dibunderaké, refractoriness dhuwur, stabilitas termokimia sing apik, ekspansi termal sing kurang, impact lan resistance abrasion, fitur fragmentasi sing kuwat. wedhi Keramik bisa digunakake kanggo gawé casting kualitas dhuwur dening sembarang jinis pangolahan wedhi casting.
2. Area aplikasi pasir keramik
Wedhi Keramik wis populer digunakake ing foundries saka paling jinis teknologi pengecoran, kayata resin ditutupi wedhi, proses self-harden (F NB, APNB lan Pep-set), kothak kadhemen, kothak panas, wedhi printing 3D, lan proses umpluk ilang. .
3. Spesifikasi pasir keramik
SND bisa nyedhiyakake wedhi keramik saka macem-macem spesifikasi. Kanggo komposisi kimia, ana aluminium-oksida dhuwur, wedhi aluminium-oksida medium lan wedhi aluminium-oksida sing luwih murah, sing digunakake kanggo bahan tuang sing beda. Kabeh duwe distribusi ukuran partikel sing akeh kanggo nyukupi panjaluk pelanggan.
4. Sifat-sifat wedhi keramik
5. Distribusi ukuran partikel
| bolong | 20 | 30 | 40 | 50 | 70 | 100 | 140 | 200 | 270 | Pan | Range AFS |
| μm | 850 | 600 | 425 | 300 | 212 | 150 | 106 | 75 | 53 | Pan | |
| #400 | ≤5 | 15-35 | 35-65 | 10-25 | ≤8 | ≤2 | 40±5 | ||||
| #500 | ≤5 | 0-15 | 25-40 | 25-45 | 10-20 | ≤10 | ≤5 | 50±5 | |||
| #550 | ≤10 | 20-40 | 25-45 | 15-35 | ≤10 | ≤5 | 55±5 | ||||
| #650 | ≤10 | 10-30 | 30-50 | 15-35 | 0-20 | ≤5 | ≤2 | 65±5 | |||
| #750 | ≤10 | 5-30 | 25-50 | 20-40 | ≤10 | ≤5 | ≤2 | 75±5 | |||
| #850 | ≤5 | 10-30 | 25-50 | 10-25 | ≤20 | ≤5 | ≤2 | 85±5 | |||
| #950 | ≤2 | 10-25 | 10-25 | 35-60 | 10-25 | ≤10 | ≤2 | 95±5 |
6. Jenis-jenis pasir pengecoran
Ana rong jinis wedhi pengecoran sing populer digunakake, alami lan gawean.
Pasir pengecoran sing umum digunakake yaiku pasir silika, pasir kromit, olivin, zirkon, pasir keramik lan cerabeads. Wedhi keramik lan cerabeads minangka pasir buatan, liyane minangka pasir alam.
7. Ing refractoriness saka wedhi foundry populer
Pasir silika: 1713 ℃
Pasir Keramik: ≥1800 ℃
Pasir kromit: 1900 ℃
Pasir olivine: 1700-1800 ℃
Pasir zirkon: 2430 ℃
Posting wektu: Mar-27-2023
