35Crrmov round steel (GB / T 3077) yog chromium- molybdenum {}- kub bolts:
Tensile lub zog: 930-1130 MPa tom qab quenching (880 degree) thiab tempering (600 degree), tswj lub zog ntawm kev khiav haujlwm txog li 500 degree.
Tos lub zog: ntau dua los yog sib npaug rau 785 MPa, ua kom muaj zog khaws cia clamping figh - kub tawm.
Cais tawm ntawm: Zoo heev ntawm 450-500 degree, tiv thaiv dav dav xoob nyob rau hauv chav turnbine thiab boiler cov ntawv thov.
Kev Cuam Tshuam Cov Khoom Siv: Loj dua lossis sib npaug nrog 55 J ntawm 20 degree, tawm tsam brittle tsis ua hauj lwm thaum lub caij cycling.
Nws cov Chemistry (0.32-0.40% c, 1.00-1.30% mo, 0.10- {(usa} Ua - in {{}}}}}}}}}}} - temp bolt kev ua haujlwm. "