1. Dab tsi yog qhov kev txwv ntawm seamless yeeb nkab?
Teb:Vim muaj kev txwv kev tsim khoom, cov kav dej seamless feem ntau muaj nyob rau hauv cov kab me me thiab cov phab ntsa hnyav dua piv rau cov kav dej welded. Thaum cov mills niaj hnub tuaj yeem tsim cov kab loj loj (piv txwv li, 24 "OD), qhov loj tshaj plaws thiab kev lag luam rau seamless yog qis dua 16 ntiv tes (406 hli) nyob rau sab nraud.
2. Quenching & Tempering (Q&T) kev kho cua sov yog dab tsi, thiab vim li cas nws thiaj siv rau seamless yeeb nkab?
Teb:Q&T yog ob - txheej txheem kev kho cua sov. quenching sai txias cov hlau los tsim ib qho nyuaj, tab sis nkig, martensitic qauv. Tempering ces reheats nws mus rau ib tug qis kub kom txo brittleness thiab ua tau ib tug superior ua ke ntawm siab zog thiab toughness. Qhov no yog qhov tseem ceeb rau cov kav dej hauv cov qib xav tau xws li X70 thiab siab dua.
3. Dab tsi tsis yog -Kev Ntsuas Kev Ntsuas (NDT) yog qhov tseem ceeb rau kev ruaj ntseg zoo ntawm cov yeeb nkab seamless?
Teb:Cov txheej txheem NDT tseem ceeb suav nrog:
Kev kuaj ultrasonic (UT):Txhawm rau txheeb xyuas qhov tsis zoo ntawm sab hauv thiab subsurface zoo li suav nrog lossis laminations.
Eddy Current Testing (ECT):Rau qhov chaw thiab nyob ze -surface flaw detection.
Kev Ntsuas Hydrostatic:Txhawm rau txheeb xyuas qhov siab ncaj ncees los ntawm kev nias cov yeeb nkab nrog dej saum toj ntawm nws qhov ntsuas qhov muaj zog.
4. Dab tsi yog tus nqi tsav tsheb rau seamless kab yeeb nkab?
Teb:Qhov nyuaj thiab lub zog- cov txheej txheem tsim khoom hnyav yog thawj tus nqi tsav tsheb. Cov tho thiab elongation mills xav tau cov peev txheej loj thiab lub zog, ua cov yeeb nkab seamless feem ntau kim dua li cov yeeb nkab sib npaug.
5. Cov yeeb nkab seamless puas tuaj yeem raug laminations lossis suav nrog?
Teb:Yog lawm. Txij li cov yeeb nkab seamless yog tsim los ntawm cov khoom siv hluav taws xob, ib qho kev tsis xws luag muaj nyob rau hauv thawj steel billet (xws li tsis yog -hlau inclusions lossis centerline segregation) tuaj yeem nqa mus rau hauv cov yeeb nkab kawg. Qhov no yog vim li cas kev xaiv cov khoom siv nruj thiab kev tshuaj xyuas ultrasonic ntawm cov billets thiab cov yeeb nkab tiav yog qhov tseem ceeb heev.
