ASTM A252 Qib 1 yog dab tsi?
ASTM A252 yog tus qauv specification rau welded thiab seamless steel yeeb piles siv nyob rau hauv lub hauv paus tsim. Qib 1 yog qib qis tshaj - lub zog, nrog qhov tsawg kawg nkaus tawm lub zog ntawm 205 MPa thiab lub zog tensile yam tsawg kawg nkaus ntawm 345 MPa, tsim rau lub teeb- cov ntawv thov thiab cov av zoo uas tsis tas yuav muaj zog dua.
Thaum tsim los ntawm cov txheej txheem kauv submerged arc vuam, Qib 1 pawg sib txuas cov khoom siv qis tshaj plaws nrog txoj kab uas hla ntawm txoj kab uas hla ntawm txoj kab sib dhos.
Ntsiab Specifications
| Yam khoom | Qib 1 SSAW Requirement |
|---|---|
| Yield zog, min | 205 MPa (30,000 psi) |
| Tensile zog, min | 345 MPa (50,000 psi) |
| Elongation, min | 30% rau phab ntsa 7.9 hli thiab siab dua |
| Cov pa roj carbon, max | 0.26% |
| Manganese, max | 1.60% |
| Phosphorus, max | 0.05% |
| Sulfur, max | 0.03% |
Cov chemistry yog cov pa roj carbon yooj yooj yim, uas ua rau tus nqi qis thaum muab lub zog txaus rau lub teeb pom kev zoo.
Manufacturing los ntawm Kauv Submerged Arc Vuam
SSAW pawg yog tsim los ntawm kub- dov coil nyob rau hauv chav tsev kub rau hauv ib tug kauv thiab welded los ntawm ob -sided submerged arc vuam nyob rau hauv thiab sab nraud. Cov txheej txheem tsim cov kab uas hla ntawm li 168 hli mus rau 4,064 hli nrog cov phab ntsa ntawm 3.2 hli mus rau 50 hli thiab ntev txog li 50 meters los yog ntau tshaj, txo cov naj npawb ntawm cov teb splices ntawm ib qhov project.
Kev kuaj thiab tshuaj xyuas
Qib 1 pawg raug sim rau chemistry, tensile zog, flattening thiab dabtsi yog khoov, thiab txhua cov yeeb nkab yog hydrostatically kuaj thaum teev. Txawm hais tias tus qauv tsis tso cai 100 feem pua tsis yog -kev kuaj xyuas kev puas tsuaj ntawm vuam, ultrasonic lossis radiographic kuaj ntawm tag nrho cov seam yog cov qauv kev coj ua ntawm cov mills zoo thiab yuav tsum tau teev los ntawm tus neeg yuav khoom.
Daim ntawv thov
Qib 1 SSAW pawg ua haujlwm rau cov tsev nyob thiab cov chaw lag luam me me, kev txhawb nqa ib ntus shoring thiab excavation, kev txhawb nqa choj me me, kev ua liaj ua teb thiab tsis yog - cov chaw tseem ceeb hauv hiav txwv. Lawv raug xaiv qhov twg cov av muaj peev xwm txaus thiab lub zog ntawm Qib 2 thiab 3 tsis yog kev lag luam ncaj ncees.
FAQ
Q1. Lub zog tawm los ntawm A252 Gr . 1 yog dab tsi?
Qib 1 muaj qhov tsawg kawg nkaus tawm lub zog ntawm 205 MPa, sib npaug rau 30,000 psi, qis tshaj ntawm peb qib A252.
Q2. Dab tsi yog qhov zoo ntawm kauv vuam rau pawg?
Kauv vuam tsim cov diameters loj heev los ntawm nqaim coil kev lag luam, nrog qhov ntev ntev uas txo qhov kev sib tshuam thiab cov seam uas faib tsav kev ntxhov siab.
Q3. Dab tsi ntawm txoj kab uas hla yog muaj?
SSAW pawg yog tsim los ntawm li 168 hli mus rau ntau tshaj 4,000 hli sab nraud txoj kab uas hla, nrog phab ntsa thicknesses feem ntau ntawm 5 hli mus rau 30 hli.
Q4. Qib 1 puas tsim nyog rau cov qauv mus tas li?
Rau feem ntau cov hauv paus ruaj khov, Qib 2 yog qhov tsawg kawg nkaus pom zoo. Qib 1 haum rau lub teeb, ib ntus thiab tsis yog - daim ntawv thov tseem ceeb hauv cov av zoo.
Q5. Dab tsi coatings tiv thaiv pawg yeeb nkab?
Fusion bonded epoxy, peb- txheej polyethylene, thee tar epoxy, bitumen lossis galvanizing yog siv nyob ntawm qhov chaw faus thiab kev pabcuam.
Q6. Qib 1 piv nrog Qib 2 thiab qib 3 li cas?
Qib 3 muaj txog 51 feem pua siab dua cov txiaj ntsig tshaj Qib 1 thiab Qib 2 txog 17 feem pua siab dua, yog li kev xaiv nyob ntawm tus qauv tsim thiab cov av.
