Thaum ntxiv cov pa roj carbon rau cov hlau ductile, ib tug yuav tsum xaiv cov roj av graphitized lossis cov thee calcined?

[] Nws raug pom zoo kom xaiv cov roj av graphitized ua lub carburizer rau cov hlau ductile rau cov laj thawj hauv qab no:

1. Cov tshuaj lom neeg zoo tshaj plaws:
   • Cov roj av coke uas muaj graphitized: Feem ntau nws muaj ntau tshaj 99.5% carbon thiab tsawg dua 0.05% sulfur. Cov yam ntxwv ntawm cov pa roj carbon ntau thiab cov sulfur tsawg pab ua rau cov pa roj carbon ntau ntxiv ntawm cov hlau ductile thaum txo cov teebmeem tsis zoo ntawm sulfur rau ntawm nodularization thiab graphitization, yog li tiv thaiv cov qhov tsis zoo hauv cov castings.
   • Calcined anthracite carburizer: Feem ntau nws muaj cov pa roj carbon ntawm 90-93% thiab cov pa sulfur ntawm 0.3-0.5%. Cov pa roj carbon tsawg thiab cov pa sulfur siab yuav ua rau cov pa sulfur ntau ntxiv hauv cov castings, cuam tshuam rau cov nyhuv nodularization thiab cov khoom casting.
2. Kev nqus dej zoo dua:
   • Cov roj av coke uas muaj graphitized: Yog tias kho nrog qhov kub siab, cov pa roj carbon atoms raug teeb tsa kom zoo, tsim cov qauv graphite flake. Qhov no ua rau cov hlau yaj yaj yaj sai thiab nqus tau sai, ua rau muaj kev ua haujlwm carburization siab thiab ua rau cov pa roj carbon ntawm cov hlau yaj yaj yaj nce ntxiv.
   • Calcined anthracite carburizer: Nrog cov pa roj carbon tsawg dua, nws yaj qeeb dua thiab muaj qhov nqus dej tsawg dua, uas yuav ua rau lub sijhawm yaj ntev dua thiab ua rau siv hluav taws xob ntau dua.
3. Kev cuam tshuam rau qhov nodularization thiab graphitization:
   • Cov roj av graphitized: Cov ntsiab lus sulfur tsawg txo qhov cuam tshuam nrog tus neeg sawv cev nodularizing, pab ua tiav cov teebmeem nodularization zoo thiab graphite morphology, yog li txhim kho cov khoom siv kho tshuab ntawm cov hlau ductile.
   • Calcined anthracite carburizer: Cov ntsiab lus sulfur ntau dua yuav cuam tshuam rau cov txheej txheem nodularization, cuam tshuam rau nucleation thiab kev loj hlob ntawm graphite, ua rau cov khoom casting puas tsuaj.
4. Kev zoo ntawm kev pov tseg:
   • Cov roj av graphitized coke: Siv nws ua rau muaj qhov zoo tshaj plaws ntawm cov hlau castings, ua kom lub zog thiab kev tawv ntawm cov hlau ductile zoo dua thiab txo cov qhov tsis zoo xws li porosity thiab shrinkage, yog li txhim kho tus nqi tsim nyog ntawm cov khoom.
   • Calcined anthracite carburizer: Vim nws cov ntsiab lus sulfur ntau dua, nws yuav ua rau porosity hauv cov castings thiab txo cov khoom siv kho tshuab, cuam tshuam rau qhov zoo ntawm casting.
5. Tus nqi siv:
   • Cov roj av coke uas muaj graphitized: Txawm hais tias nws tus nqi yuav siab dua li ntawm cov roj calcined anthracite carburizer me ntsis, nws cov carburization efficiency siab txo cov carburizer uas xav tau, txo cov nqi yaj. Tsis tas li ntawd, nws txhim kho cov khoom zoo thiab txo cov nqi pov tseg, ua rau cov nqi siv qis dua.
   • Calcined anthracite carburizer: Txawm hais tias nws tus nqi qis dua, nws qhov kev nqus dej tsawg yuav ua rau muaj kev siv ntau dua, thiab nws yuav cuam tshuam rau qhov zoo ntawm kev casting, ua rau cov nqi ua tiav tom qab siab dua.