Katundu ndi ntchito za graphite

Kufotokozera kwa Mankhwala: graphite

Ufa wa graphite ndi wofewa, wakuda imvi, wonenepa ndipo ukhoza kuipitsa mapepala. Kulimba kwake ndi 1-2, ndipo kumawonjezeka kufika pa 3-5 ndi kuwonjezeka kwa zinyalala motsatira njira yoyima. Mphamvu yake yokoka ndi 1.9-2.3. Pansi pa kusungunuka kwa mpweya, malo ake osungunuka ndi opitirira 3000 ℃, yomwe ndi imodzi mwa mchere wotetezeka kwambiri kutentha. Pa kutentha kwa chipinda, mphamvu ya mankhwala ya ufa wa graphite ndi yokhazikika, yosasungunuka m'madzi, asidi wochepa, alkali wochepa ndi zosungunulira zachilengedwe; chinthucho chimakhala ndi kukana kutentha kwambiri komanso kuyendetsa bwino mpweya, ndipo chingagwiritsidwe ntchito ngati zinthu zoletsa, zoyendetsa mpweya, zosawonongeka komanso zopaka mafuta.

Chifukwa cha kapangidwe kake kapadera, graphite ili ndi makhalidwe awa: 1. Kukana kutentha kwambiri: malo osungunuka a graphite ndi 3850 ± 50 ℃, ndipo malo owira ndi 4250 ℃. Izi zikutanthauza kuti, kuchuluka kwa kulemera ndi kuchuluka kwa kutentha kumakhala kochepa kwambiri mukamagwiritsa ntchito sintering ya arc yotentha kwambiri, ndipo mphamvu ya graphite imawonjezeka ndi kutentha kwakukulu. Pa 2000 ℃, mphamvu ya graphite imawirikiza kawiri. 2. Kukhuthala: kukhuthala kwa graphite kumadalira kukula kwa graphite. Sikelo ikakhala yayikulu, kukhuthala kumakhala kochepa, ndipo magwiridwe antchito a mafuta amakhala abwino. 3. Kukhazikika kwa mankhwala: graphite ili ndi kukhazikika kwa mankhwala abwino kutentha kwa chipinda, yolimbana ndi dzimbiri la asidi, alkali ndi organic solvent. 4. Kukhazikika: graphite ili ndi kulimba kwabwino ndipo imatha kukanikiza m'mapepala oonda. 5. Kukana kutentha: graphite ikagwiritsidwa ntchito kutentha kwa chipinda, imatha kupirira kusintha kwakukulu kwa kutentha popanda kuwonongeka. Kutentha kukakwera mwadzidzidzi, kuchuluka kwa graphite sikudzasintha kwambiri ndipo sipadzakhala ming'alu.

Ntchito:

1. Monga zinthu zotsutsa: graphite ndi zinthu zake zimakhala ndi mphamvu zambiri komanso kukana kutentha kwambiri. Amagwiritsidwa ntchito makamaka popanga zinthuchophikira cha graphitemumakampani opanga zitsulo, ndipo nthawi zambiri amagwiritsidwa ntchito ngati chotetezera cha ingot yachitsulo ndi chingwe cha ng'anjo yachitsulo.

2. Monga mafuta opaka omwe satha kutha: graphite nthawi zambiri imagwiritsidwa ntchito ngati mafuta opangira makina. Mafuta opaka nthawi zambiri sakhala oyenera kugwiritsa ntchito liwiro lapamwamba, kutentha kwambiri komanso kuthamanga kwambiri.

3. Graphite ili ndi kukhazikika kwabwino kwa mankhwala. Imagwiritsidwa ntchito kwambiri m'makampani opanga mafuta, hydrometallurgy, kupanga acid-base, ulusi wopangidwa, kupanga mapepala ndi mafakitale ena, zomwe zimatha kusunga zitsulo zambiri.

4. Graphite ingagwiritsidwe ntchito ngati pensulo, utoto ndi chopukutira. Pambuyo pokonza mwapadera, graphite ikhoza kupangidwa kukhala zipangizo zosiyanasiyana zapadera kuti zigwiritsidwe ntchito ndi madipatimenti oyenerera a mafakitale.