ERW cevkev cai
| Kev xav tau | Rau kev thauj roj thiab roj | Rau cov dej tsis tshua muaj siab conveying |
| Khoom siv | Gr.b | Gr.b |
| Lub cev txoj kab uas hla | D＜508mm, ± 0.75%;D≥508mm, ± 0.75% | D≤168.3, ± 1.0%;168.3 ib＜D≤508, ± 0.75%; |
| Phab ntsa thickness | D＜508 hli, + 15.0%,-12.5% yog ';D≥508mm, +17.5%,-10% | ± 12.5% |
| Khoov | ≤ 0.2% | ≤ 0.2% |
| Ovality | D≥508mm,≤ ± 1% | ≤ ± 0.75% |
| Bevel | ≤1.59mm | ≤ 5mm |
| Kev ntsuam xyuas hydrostatic | 100% | 100% |
| Kev kuaj tsis raug | 100% non-destructive weld soj ntsuam | Ultrasonic tsis pom kev yog 100% |
ERW yeeb nkab weld contour zoo
Raws li API SPEC 5L cov qauv, feem ntau cov khoom tsim hauv tsev thaum lub sij hawm SAW yeeb nkab weld tensile xeem, feem ntau khaws cov weld reinforcement, ncaj tensile xeem los ntawm qhov kev ntsuam xyuas tsis tshua muaj tawg welds teeb meem.Qhov laj thawj tseem ceeb tuaj yeem raug ntaus nqi los ntawm qhov muaj qhov txuas ntxiv.SAW yeeb nkab, hais ntau tshaj qhov siab lossis ntxiv dag zog rau siab, nyob rau hauv lub hom phiaj kom nce lub thickness ntawm lub weld cheeb tsam, thiab txhim khu lub structural zog ntawm weld, lub zog ntawm lub weld cheeb tsam (tag nrho cov structural zog) tshaj lub zog ntawm lub hauv paus. hlau qhov chaw.
Siv SAW yeeb nkab weld Strengthening beneficial luag hauj lwm nyob rau hauv lub ERW yeeb nkab welding Weld npaj yuav nyem tuab, nyob rau hauv ib ncig ntawm lub weld los tsim ib tug thickness ntau dua li cov thickness ntawm lub hauv paus cov ntaub ntawv, txuas mus rau lub reinforcing txheej weld tshav kub cuam tshuam cheeb tsam, ces nyob rau hauv lub vuam burr tsim kom meej meej, tsim wavy du kev hloov cheeb tsam los txhim kho cov txheej txheem lub zog ntawm weld cheeb tsam ntawm lub hauv paus hlau thiab steel welds.Meanwhile, txij li lub thickness ntawm cov yeeb nkab welds muaj ib tug ntau dua kam rau ua, txawm scraping system instability vim nyob rau hauv glitch, ua rau ib co degree ntawm khawb groove welds, nws yuav tsis ua rau ib tug loj txo weld zog.Tsis tas li ntawd, qhov vuam thiab lub hauv paus hlau du kev hloov pauv, kev kuaj ultrasonic ntawm qhov vuam tsis ua rau qhov tsis zoo ntawm tus nqi nce ntxiv.
Scrape sab hauv welds heev du burr, weld thiab puag hlau hloov zoo heev.Feem ntau steel yeeb nkab phab ntsa thickness yog 11.9 hli, thickness ntau yam ntawm extrusion welds feem ntau yog li ntawm 25 hli mus rau ob sab ntawm txhua qhov weld, qhov weld feem tom qab tshem tawm ntawm burr dua li lwm qhov ntawm cov khoom siv thickness ntawm li 10%.Lub thickness me me ntawm cov yeeb nkab, nyem tuab ntau yam yuav raug txo, tab sis qhov kev faib ua feem ntawm weld thicker qhov chaw ntawm kev tswj dav dav 10% ntawm cov khoom siv thickness.
Post lub sij hawm: Oct-29-2019