1. Puas yog ASTM SA192 muaj nyob rau hauv cov khoom sib txawv?
Yog lawm, kev ua tiav rau ASTM SA192 suav nrog:
Kub-Rolled (HR): Raws li- dov nto nrog tsaus, oxide nplai (tus qauv rau feem ntau cov ntawv siv boiler).
Txias-Drawn (CD): Smooth, ci ntsa iab (rau cov ntawv thov uas yuav tsum tau ua kom ntev ntev ntev los yog huv si sab hauv).
Pickled thiab Oiled (P&O): Scale tshem tawm ntawm cov kua qaub pickling, ces oiled los tiv thaiv xeb (ntaus cia / thauj).
2. Cov qauv dab tsi sib npaug rau ASTM SA192 thoob ntiaj teb?
TS EN ISO 9329-1 (Tshooj 1: Seamless steel raj rau boilers thiab kub exchangers - Ntu 1: Carbon steel tubes)
TS EN 10216-1 (Tshuaj tsis muaj seamless steel raj rau lub hom phiaj siab - Ntu 1: Cov hlau tsis muaj hlau tsis muaj hlau nrog cov khoom tshwj xeeb hauv chav sov)
JIS: JIS G 3461 (Seamless steel raj rau boilers thiab tshav kub exchangers).
GB: GB / T 3087 (Seamless steel raj rau qis thiab nruab nrab siab boilers).
3. ASTM SA192 puas tuaj yeem txuas rau hauv daim ntawv thov teb?
Yog lawm, ASTM SA192 yog weldable siv cov txheej txheem arc vuam (xws li SMAW, GTAW, GMAW). Cov ntsiab lus tseem ceeb welding:
Preheat rau 200-300℃F (93-149 degree) txhawm rau tiv thaiv qhov txias txias.
Siv qhov sib piv qis -hydrogen electrodes (piv txwv li, E7018) lossis cov hlau muab tub lim.
Tshaj tawm -weld kev kho cua sov (PWHT) ntawm 1100–1300℃F (595–705 degree) txhawm rau txo cov kev ntxhov siab ntawm vuam thiab rov ua kom cov ductility.
4. Qhov hnyav ib ko taw ntawm ASTM SA192 yeeb nkab yog dab tsi (piv txwv li, 2 "OD x 0.154" WT)?
Qhov hnyav ib ko taw (WPF) ntawm seamless steel yeeb nkab yog suav nrog cov qauv:
WPF=1000(OD-WT) × WT × 10.68
2" OD (2.000") x 0.154" WT:
WPF =1000(2.000-0.154) × 0.154 × 10.68 ≈0.307 lbs/ft
(Ceeb Toom: 10.68 yog qhov tas li rau carbon steel ntom=0.283 lb/in³.)
5. Cov ntawv pov thawj zoo li cas feem ntau muab nrog ASTM SA192 yeeb nkab?
Cov neeg muag khoom feem ntau muab cov ntawv pov thawj hauv qab no:
ASTM A192 / A192M daim ntawv pov thawj ua raws (Mill Test Report - MTR).
Chemical composition thiab mechanical properties test results.
Cov ntaub ntawv kho cua sov.
NDT (UT/hydrostatic) test reports.
ISO 9001 Kev tswj hwm qhov system ntawv pov thawj.
ASME Tshooj I pom zoo (rau cov ntawv thov boiler xav tau ASME ntawv pov thawj).
