Q: Dab tsi yog qhov txawv ntawm Mandrel Mill thiab Plug Mill txheej txheem?
A:Ob leeg elongate ib pierced plhaub. Hauv ibPlug Zeb, lub plhaub yog dov tshaj ib tug nyob ruaj ruaj, tapered plug. Hauv ibMandrel Mill, lub plhaub yog dov ntev ntev, cylindrical mandrel uas txav nrog lub plhaub, tso cai rau ntev dua, ntau yam elongation thiab zoo tswj ntawm phab ntsa thickness.
Q: Lub hom phiaj ntawm "quenching thiab tempering" (Q & T) kev kho cua sov yog dab tsi?
A:Q&T yog siv rau cov hlau alloy thiab siab -lub zog carbon steel kav (xws li,API 5L X70 Q&T, A519 mechanical tubing) kom ua tiav kev sib xyaw ua ke ntawm lub zog siab thiab zoo toughness. quenching (ceev txias) ua rau cov martensite nyuaj, thiab tempering (reheating) txo brittleness thiab relieves stresses.
Q: Vim li cas cov kav dej seamless feem ntau "txias"?
A:Kev kos duab txias yog rub cov yeeb nkab kub - tiav los ntawm qhov tuag thiab hla lub mandrel ntawm chav tsev kub. Cov txheej txheem no ua tiav qhov kev ua kom nruj dua, kev ua tiav ntawm qhov ua tiav, thiab ua kom lub zog muaj zog (strain hardening), uas yog qhov tseem ceeb rau kev siv precision xws li hydraulic thooj voos kheej kheej (ASTM A519 Cov Lus Qhia Tshwj Xeeb), bearings, thiab mechanical Cheebtsam.
Q: Hydrostatic Test yog dab tsi?
A:Nws yog qhov yuav tsum tau ua tsis yog -kev sim ua kom puas tsuaj qhov twg cov yeeb nkab tau ntim nrog dej thiab ua kom siab mus rau ib theem uas tau teev tseg (feem ntau 1.5-2 npaug ntawm nws qhov ntsuas siab) txhawm rau kuaj xyuas cov dej xau thiab xyuas nws lub zog nyob rau hauv siab. Nws xav tau los ntawm cov qauv xws li ASTM A106 thiab API 5L.
Q: Ultrasonic Testing (UT) kuaj tau dab tsi?
A:UT siv siab -ntau zaus suab nthwv dej kom pom qhov tsis zoo ntawm sab hauv xws li laminations, suav nrog, thiab voids hauv cov yeeb nkab phab ntsa. Nws yog ib qho tseem ceeb rau cov ntawv thov tseem ceeb kom ntseeg tau tias muaj kev ncaj ncees sab hauv.
