1045 tus qauv steel yeeb nkab, 45 # seamless steel yeeb nkab
Lus piav qhia luv luv:
45 # seamless steel raj tom qab quenching thiab tempering kev kho mob muaj kev zoo txhua yam khoom, dav siv nyob rau hauv ntau yam ntawm cov yam ntxwv tseem ceeb, tshwj xeeb tshaj yog cov neeg ua hauj lwm nyob rau hauv alternating load txuas Qws, ntsia liaj qhov rooj, iav thiab ncej, thiab lwm yam.Tab sis qhov saum npoo hardness yog tsawg, tsis hnav-resistant.Lub hardness ntawm qhov chaw tuaj yeem txhim kho los ntawm quenching thiab tempering + nto quenching.
