Carbon caij nplooj ntoos hlav steel hlau yuav tsum muaj siab tensile zog, elastic txwv, toughness, thiab qaug zog lub zog, thiab yuav tiv taus tej yam thiab kev co. Xyuas kom lub zog thiab toughness, tshwj xeeb tshaj yog tiv thaiv torsional cracking, yog ib qho tseem ceeb nyob rau hauv zus tau tej cov caij nplooj ntoos hlav steel hlau. Lub sab hauv thiab qhov chaw zoo ntawm cov hlua hlau ncaj qha cuam tshuam rau cov hlau ua haujlwm. Cov pa roj carbon caij nplooj ntoos hlav steel hlau yog tsim los ntawm siab - carbon, siab - zoo carbon structural steel los yog carbon cuab yeej steel hlau qws, thiab nws cov tshuaj muaj pes tsawg leeg, roj cov ntsiab lus, thiab tsis yog -hlau inclusions yuav tsum nruj me ntsis tswj raws li lub caij nplooj ntoos hlav daim ntawv thov. Txhawm rau txo qhov tsis xws luag thiab cov txheej txheem decarburized, cov hlau nplaum uas siv rau kev tsim cov hlua hlau yuav tsum yog saum npoo- hauv av, thiab tev tawm yuav tsim nyog. Hlau rods yuav tsum tau normalizing los yog martensitizing kev kho mob; rau qhov tshwj xeeb loj, spheroidizing annealing yog siv los hloov.
Jarious kev kho cua sov, tshwj xeeb tshaj yog ua ntej cov khoom tiav kev kos duab, dav siv martensitizing. Decarburization yuav tsum tau tiv thaiv thaum kho cua sov. Tom qab kev kho cua sov, pickling nrog sulfuric acid los yog hydrochloric acid yog siv los tshem tawm cov hlau oxide nplai. Coatings (saib Lubricating Carrier) tuaj yeem siv los ntawm cov txiv qaub dipping, phosphating, kho borax, lossis tooj liab plating. Cov txheej txheem kev kos duab ntawm cov khoom tiav muaj qhov cuam tshuam loj rau nws qhov kev ua tau zoo. Feem ntau, kev txo qis hauv cheeb tsam loj (ze li 90%, saib cheeb tsam txo tus nqi) thiab qhov txo qis hauv cheeb tsam ib ntus (kwv yees Tsawg dua lossis sib npaug li 23%) yog siv los xyuas kom meej cov khoom toughness. Rau siab - lub zog caij nplooj ntoos hlav steel hlau, qhov kub ntawm cov hlau nyob hauv txhua qhov kev hla yuav tsum tau tswj qis dua 150℃thaum kos duab los tiv thaiv cov kab nrib pleb uas tshwm sim los ntawm kev laus, uas yog qhov tsis xws luag uas ua rau cov hlau seem. Yog li ntawd, zoo lubrication thiab txaus txias yog qhov tseem ceeb thaum kos duab. Kev siv qhov txo qis hauv cheeb tsam ib qho dhau los thiab qis dua qhov nrawm yuav pab txo qhov kub ntawm cov hlau. Tom qab kos duab, cov hlau hlau muaj cov kev ntxhov siab tseem ceeb, cuam tshuam rau nws txoj haujlwm. Qhov no tuaj yeem raug tshem tawm los ntawm kev ncaj nraim hauv online lossis qis -kub (180–370 degree) cua sov.
