Q: Dab tsi yog qhov tseem ceeb ntawm kev siv lub tshuab hluav taws xob- taub qab-welded (Hom F) yeeb nkab?
A:Raws li cov qauv, Hom F yeeb nkab yogtsis npaj rau flanging. Weld zoo thiab cua sov- thaj tsam cuam tshuam yuav tsis muaj cov khoom sib xws uas yuav tsum tau ua rau qhov deformation loj cuam tshuam nrog flange- ua-7.
Q: Vim li cas cov yeeb nkab seamless yuav muaj tus nqi siab dua thiab siv sij hawm ntev dua li cov yeeb nkab welded?
A:Cov txheej txheem tsim khoom rau seamless yeeb nkab (suav nrog cov tho kub thiab rotary elongation) yog qhov nyuaj, lub zog - siv zog, thiab muaj cov khoom pov tseg ntau dua piv rau kev tsim thiab vuam steel sawb lossis phaj.
Q: Dab tsi ua rau lamellar tearing nyob rau hauv tuab -walled yeeb nkab fabrication?
A:Nws yog qhov tshwm sim tawg uas tshwm sim hauv qab vuam seams hauv dov steel phaj / ntu. Nws yog tshwm sim los ntawm qhov siab dhau los ntawm - thickness stresses (los ntawm weld shrinkage) ua rau tsis yog -metallic inclusions elongated thaum lub sij hawm steel dov txheej txheem. Siv "Z-zoo" steel nrog kev txhim kho los ntawm- thickness ductility txo qhov no.
Q: Ua li cas qhov kub hloov pauv cuam tshuam rau carbon steel piping systems?
A:Thermal expansion thiab contraction ua rau muaj kev ntxhov siab loj. Yog tias tsis muaj kev tswj xyuas kom zoo nrog lub voj voog nthuav dav, lub hauv siab, lossis kev txhawb nqa kom zoo, nws tuaj yeem ua rau cov yeeb nkab hneev, kev sib txuas ua tsis tiav, lossis ntau dhau ntawm cov khoom siv nozzles-9.
Q: Dab tsi yog qhov tseem ceeb ntawm "End Condition" hauv cov yeeb nkab specifications?
A:Cov xwm txheej kawg (dawb kawg, beveled rau vuam, lossis threaded) yuav tsum tau teev thaum xaj. Nws txiav txim siab yuav ua li cas cov yeeb nkab yuav koom nrog hauv thaj chaw thiab cuam tshuam rau cov nqi tsim khoom thiab cov txheej txheem kev teeb tsa. ASTM A53 yeeb nkab, piv txwv li, feem ntau muaj nrog cov xaus los yog threaded kawg-7.
