Q345R steel yog lub phaj tshwj xeeb rau cov hlab ntsha siab nrog lub zog tawm ntawm 345MPa. Nws muaj cov cuab yeej zoo txhua yam thiab cov txheej txheem ua tau zoo. Cov ntsiab lus phosphorus thiab sulfur yog me ntsis qis dua qhov qis - alloy siab - lub zog steel phaj Q345 (16Mn) steel. Ntxiv nrog rau lub zog tensile thiab elongation yuav tsum siab dua cov Q345 (16Mn) steel, qhov cuam tshuam toughness kuj yuav tsum tau ua kom ntseeg tau. Nws yog feem ntau siv thiab dav siv steel phaj rau cov hlab ntsha siab hauv kuv lub teb chaws.
Q345R (R-HIC)Kuv hais txog qib steel Q345R. Kev kuaj corrosion yog hydrogen-induced cracking (HIC) thiab sulfide stress corrosion (SSCC). Cov muaj pes tsawg leeg yuav tsum tau melting tsom xam P Tsawg dua los yog sib npaug rau 0.015, S Tsawg dua los yog sib npaug rau 0.003; Kev soj ntsuam cov khoom tiav P Tsawg dua lossis sib npaug rau 0.015, S Tsawg dua lossis sib npaug rau 0.004
Q345RHIC xav tau HIC hydrogen-induced cracking test. Q345RR-HIC xav tau HIC hydrogen-induced cracking test thiab SSCC hydrogen sulfide resistance test. Q345RHIC thiab Q345RR-HIC xeem ib puag ncig: Kev daws HIC steel (HIC-A) thiab B tov HIC steel (HIC{11}}B) Q345RHIC thiab Q345RR-HIC xeem cov khoom: tensile, dabtsi yog khoov, thickness kev taw qhia zog, grain loj, Brinew kub kuaj xyuas tensile xeem, SSCC xeem, melting tsom xam, tiav cov khoom soj ntsuam.
