Q: Dab tsi qib ntawm seamless steel yeeb nkab haum rau tshuaj corrosion-cov kav dej tsis muaj zog (xws li dilute acid pipelines)?
A: ASTM A312 TP304 lossis TP316L stainless hlau seamless kav yog tsim. Lawv muaj kev tiv thaiv corrosion zoo heev rau dilute acids, alkalis thiab lwm yam xov xwm, thiab tau siv dav hauv tshuaj, tshuaj thiab lwm yam lag luam.
Q: API 5L X42 seamless steel kav puas tuaj yeem welded?
A: Yog. API 5L X42 seamless steel kav muaj qhov zoo weldability. Lawv tuaj yeem welded los ntawm arc welding, roj shielded vuam thiab lwm txoj kev, tab sis preheating thiab post-welding thaum tshav kub kub kev kho mob yuav tsum tau ua raws li cov txheej txheem vuam yuav tsum tau kom tsis txhob vuam tawg.
Q: Txoj kev kho cua sov li cas rau ASTM A335 P91 seamless steel kav?
A: Txoj kev kho cua sov feem ntau yog normalizing + tempering. Normalizing (950-1050 degree) tuaj yeem kho cov nplej thiab txhim kho lub zog; tempering (730-780 degree) tuaj yeem tshem tawm kev ntxhov siab sab hauv thiab txhim kho toughness.
Q: Yuav ua li cas los soj ntsuam qhov zoo ntawm cov kav dej seamless steel (siv GB / T 8163 20# ua piv txwv)?
A: Cov kev tshuaj ntsuam xyuas muaj xws li kuaj ultrasonic (UT) thiab kuaj hluav taws xob (RT). Kev kuaj ultrasonic yog siv los kuaj xyuas qhov tsis xws luag xws li tawg thiab suav nrog; Kev ntsuam xyuas hluav taws xob yog siv los txhawm rau paub meej tias hom thiab qhov loj ntawm cov teeb meem sab hauv.
Q: Puas yog 45 # seamless steel kav yuav quenched thiab tempered los txhim kho lawv cov kev ua tau zoo?
A: Yog. 45# seamless steel kav tuaj yeem quenched (840-860 degree) thiab tempered (550-650 degree) los txhim kho lawv lub zog, hardness thiab toughness, ua rau lawv haum rau txhua yam khoom uas xav tau kev ua tau zoo.
