Maxay yihiin sifooyinka garaafyada la fidin karo ka dib kuleylinta garaafka la ballaarin karo?

Tilmaamaha ballaarinta eexaashida garaafyada la ballaarin karoway ka duwan yihiin wakiilada kale ee ballaarinta. Marka lagu kululeeyo heerkul gaar ah, garaafka la fidin karo wuxuu bilaabaa inuu ballaariyo sababtoo ah kala-goynta isku-dhisyada la nuugo qulqulka interlayer, kaas oo loo yaqaan heerkulka ballaarinta bilowga ah. Waxay si buuxda u fidaysaa 1000 ℃ waxayna gaartaa mugga ugu badan. Mugga ballaarinta wuxuu gaari karaa in ka badan 200 jeer qiimaha hore. Garaafka la balaariyay waxaa loo yaqaan graphite balaariyay ama graphite worm, kaas oo ka beddelaya qaabka flake asalka ah ilaa qaabka dirxiga ee cufnaanta hoose, samaynta lakabka kuleylka kuleylka ah oo aad u wanaagsan. Garaafka fidsan ma aha oo kaliya isha kaarboon ee nidaamka balaarinta, laakiin sidoo kale lakabka daboolka ah. Si wax ku ool ah ayey u noqon kartaadahaaran kulaylka. Dabka dhexdiisa, waxa uu leeyahay sifooyinka heerka kulka hoose ee sii daynta, khasaaraha tirada yar iyo gaasta qiiqa oo yaraada.

Maxay yihiin sifooyinka garaafyada la fidin karo ka dib kuleylinta garaafka la ballaarin karo?

Astaamaha garaafka la balaariyay

① Cadaadis xoog leh oo iska caabin ah,dabacsanaan, caagagga iyo is-jiidaynta;

② Iska caabin adag oo heerkul sare ah, hooseeyo,daxalkaiyo shucaac;

③ Sifooyinka dhulgariirka oo aad u xoogan;

④ Aad u xoog badandhaqdhaqaaqa;

⑤Ka-hortagga gabowga iyo dabeecadaha qallooca ee xooggan.

⑥ Waxay iska caabin kartaa dhalaalka iyo dhexgalka biraha kala duwan;

⑦ Ma aha wax sun ah, kuma jiraan wax kansar ah oo aan waxyeello u geysan deegaanka.

Dhowr jihooyin horumarineed ee garaafyada la balaariyay waa sida soo socota:

1. Garaafka fidsan ee ujeedooyinka gaarka ah

Tijaabooyinku waxay muujinayaan in gooryaanka graphite uu leeyahay shaqada nuuga hirarka korantada. Garaafiga la balaariyay waa inuu buuxiyaa shuruudaha soo socda: (1) heerkulka hore ee fidinta hoose iyo mugga ballaarinta weyn; (2) Qalabka kiimikaadku waa xasiloon, kaydsan yihiin 5 sano, iyo saamiga ballaarinta asal ahaan ma qudhunto; (3) Dusha garaafka la fidiyay waa dhexdhexaad mana laha wax daxal ah oo ku jira kiis kartuun ah.

2. Garaafka balaariyay ee granular

Qayb yar oo garaafka fidsan ayaa inta badan loola jeedaa 300 mesh garaafka la fidin karo oo leh mugga ballaarinta 100ml/g. Alaabtan waxaa inta badan loo isticmaalaa dib-u-dhigista ololkadahaarka, oo baahi weyn loo qabo.

3. Garaafka fidsan oo leh heerkul sare oo fidinta bilowga ah

Heerkulka balaadhinta bilowga ah ee garaafka balaariyay ee heerkulkiisu sarreeyo waa 290-300 ℃, mugga ballaadhintuna waa ≥ 230ml / g. Garaafyada la balaariyay ee noocaan ah waxaa inta badan loo adeegsadaa ololka caagagga injineernimada iyo caagga.

4. Garaafyada dusha wax laga beddelay

Marka garaafyada la balaariyay loo isticmaalo walxo ololka dib u dhigaya, waxay ku lug leedahay iswaafajinta garaafka iyo qaybaha kale. Sababtoo ah macdanta sare ee dusha garaafka, ma aha lipophilic ama hydrophilic. Sidaa darteed, dusha sare ee garaafka waa in wax laga beddelo si loo xalliyo dhibaatada ku habboonaanta garaafka iyo qaybaha kale. Waxaa la soo jeediyay in la caddeeyo dusha garaafka, taas oo ah, in lagu daboolo dusha garaafka oo leh filim cad oo adag, taas oo ah dhibaato adag in la xalliyo. Waxay ku lug leedahay kimistari xuubka ama kimistariga dusha sare. Shaybaadhka ayaa laga yaabaa inuu sidaas sameeyo, waxaana jira dhibaatooyin xagga warshadaynta. Noocan garaafka cad ee la fidin karo ayaa inta badan loo isticmaalaa daahan ololka celinaya.

5. Heerkulka fidinta bilawga hooseeya iyo heerkul hoose oo balaariyay garaafka

Garaafyada la balaariyay ee noocaan ah wuxuu bilaabmaa inuu ballaariyo 80-150 ℃, mugga ballaarinta wuxuu gaarayaa 250ml / g at 600 ℃. Dhibaatooyinka diyaarinta kulanka garaafiga la fidin karo shuruudahan waa: (1) xulashada wakiilka isdhexgalka ee habboon; (2) Xakamaynta iyo maaraynta xaaladaha qalajinta; (3) Go'aaminta qoyaanka; (4) Xalka dhibaatooyinka ilaalinta deegaanka.