Dhuumaha birta kaarboonHabka qaboojinta way ku kala duwan tahay walxaha.Noocyada ugu badan ee birta waxay isticmaalaan qaboojinta dabiiciga ah si loo buuxiyo shuruudaha.Ujeedada gaarka ah ee tuubada birta, si loo hubiyo shuruudaha ururka gobolka iyo guryaha jireed iyo farsamada ujeedooyin gaar ah, waa in ay jiraan hab gaar ah oo qaboojinta iyo nidaamka qaboojinta.Tusaale ahaan, tuubada birta ah ee austenitic, dhamaystirka duubista heerkul gaar ah, ka dibna lagu demiyo biyo si loo xalliyo, ka dibna la quudiyo sariirta qaboojinta qaboojinta dabiiciga ah;GCr15 birta sita si ay u leeyihiin a xaashi-pearlite microstructure ah oo looga hortago mesh carbonized The roobaadka, isticmaalka kubbadda ka dib tallaabada annealing, dhamaystirka-rogid waa in la xakameeyo at 850 degrees Celsius ama ka badan, ka dibna heerka qaboojinta degdeg ah 50- 70° C/min, oo sidaas awgeed loo isticmaalo timaha sariirta qabow ama lagu buufiyo qaboojinta qasabka ah.

Waqtiga qaboojinta tuubooyinka birta kaarboon waa saldhigga ugu weyn ee lagu go'aaminayo dhererka sariirta qaboojinta.Ku qaboojinta tuubooyinka birta ee shucaaca iyo kulaylka isdhaafsiga, la xaqiijiyay heerkulka birta ee ka sarreeya 500 darajo celsius, inta badan shucaaca kulaylka.500 darajo cesius oo ka hooseeya kulka kulaylka ku salaysan.Waa la tixgelin karaa si loo yareeyo wakhtiga qaboojinta birta si loo yareeyo dhererka sariirta qaboojinta, iyo si loo hagaajiyo xaaladaha hawlgalka ee aqoon-is-weydaarsiga, sariirta qaboojinta hawada ee qasabka ah.Baahida degdega ah ee xooggan ee 500 darajo celsius. Wakhtiga qaboojinta hawo-qaadista waxaa lagu dhimi karaa 40-50%.

Qaababka qaboojinta dhuumaha birta kaarboon

Qaabka qaboojinta tuubada way kala duwan tahay iyadoo ku xiran halabuurka kiimikada ee tuubada birta, cabbirka, iyo sifooyinka farsamada ee la rabo, wax soo saarka warshadda, qaboojinta oo la socota xaaladaha qalabka.Caadi ahaan, habka qaboojinta tuubada:

1) qaboojinta hawada dabiiciga ah.Ma jiraan shuruudo gaar ah oo loogu talagalay birta caadiga ah, sida caadiga ah waxay ku jirtaa jawiga qaboojinta dabiiciga ah.

2) qaboojin qasab ah.Marka sariirta qaboojinta yar yar ama mishiinka balaarinta sariirta qaboojinta awoodda qaboojinta, hawo-qaboojinta qasabka ah, tuubada birta waxay u baahan tahay urur gudaha ah oo gaar ah iyo qalab farsamo, waxaa loo isticmaali karaa in lagu xakameeyo habka qaboojinta biyaha ee qasabka ah.

3) qaboojin tartiib ah ama deminta.Qaar ka mid ah tuubooyinka birta daawaha ah (sida birta sida birta, tuubooyinka birta, iwm.), iyo mararka qaarkood qaboojinta tartiib tartiib ah ama deminta nidaamka qaboojinta birta si loo hagaajiyo qaab dhismeedka ururka gudaha ee birta iyo waxqabadkeeda u dhigma.