Cov txheej txheem tsim khoom ntawm cov kav hlau kav yog tus cwj pwm los ntawm nws txoj kev yooj yim, kev ua haujlwm siab, thiab muaj peev xwm los tsim cov kav hlau txuas nrog cov kab uas loj dua los ntawm cov khoom siv ntawm ib qho loj me, nrog rau cov kav dej sib txawv ntawm qhov dav ntawm qhov dav. Txawm li cas los xij, piv rau cov kav dej ncaj nraim ntawm tib qhov ntev, cov kav hlau welded muaj ib qho 30-100% ntev weld seam thiab qis qis dua.
Cov kav hlau me me feem ntau yog tsim los ntawm kev sib txuas ncaj nraim, thaum cov kav dej loj dua feem ntau siv cov kav hlau txuas. Cov kev siv ntawm cov kav hlau kav muaj ntau haiv neeg, feem ntau yog siv rau hauv cov dej num, petrochemical, tshuaj, thiab fais fab kev lag luam, kev ua liaj ua teb irrigation, thiab kev tsim kho hauv nroog. Lawv yog cov nees nkaum cov khoom tseem ceeb tsim nyob rau hauv Suav teb. Cov kav dej no ua haujlwm rau ntau lub hom phiaj: rau kev thauj mus los ua kua (dej thiab tso dej), kev xa cov pa roj (gas, ncu, liquefied petroleum gas), thiab kev siv cov txheej txheem (xws li piling pipes, txuas hniav, docks, txoj kev, thiab lub tsev).
Cov txheej txheem tsim khoom tseem ceeb tau piav qhia hauv qab no:
Ob sab hauv thiab sab nraud welding ntiav ib leeg-xaim lossis ob-xaim submerged arc vuam kom ruaj khov vuam specifications. Cov txheej txheem tsis raug hloov kho los ntawm cov neeg ua haujlwm tsim khoom hauv lub sijhawm tiag tiag kom tshem tawm txhua qhov tsis xws luag.
Cua plasma tej tshuab yog siv los txiav cov hlab steel rau hauv tus kheej ntev.
Tom qab txiav, thawj peb lub raj los ntawm txhua pawg tau ua tiav cov txheej txheem tshuaj xyuas thawj zaug, suav nrog kev sim cov khoom siv kho tshuab, tshuaj lom neeg muaj pes tsawg leeg, fusion txheej xwm, qhov zoo ntawm cov raj hlau, thiab tsis muaj kev puas tsuaj rau kev tshawb nrhiav. Tsuas yog tom qab lees paub tias cov txheej txheem ua yeeb nkab ua tau raws li cov qauv tuaj yeem pib tsim khoom.
Cov ntu ntawm cov vuam seam cim rau kev tshawb nrhiav tsis tu ncua acoustic flaw nrhiav tau txais phau ntawv ultrasonic thiab X-ray rov kuaj xyuas. Nyob rau hauv cov ntaub ntawv ntawm tsis xws luag, kho yog ua, ua raws li los ntawm lwm yam uas tsis yog-tshuaj ntsuam xyuas kom txog rau thaum cov kev tsis xws luag yuav tsum tau muab tshem tawm.
Tag nrho cov kav dej uas muaj pob tw welds ntawm steel strips thiab T-joints intersecting nrog kauv welds undergo X-ray TV soj ntsuam los yog radiography.
Txhua cov yeeb nkab steel tau dhau los ntawm kev ntsuas hydrostatic siab nrog radial sealing. Kev ntsuas siab thiab lub sijhawm yog tswj hwm nruj los ntawm cov yeeb nkab steel hydrostatic siab microcomputer kuaj cov cuab yeej. Cov ntsuas ntsuas tau raug luam tawm thiab kaw.
Mechanical processing ntawm cov yeeb nkab xaus kom meej meej tswj lub ntsej muag kawg perpendicularity, zawj lub kaum sab xis, thiab hauv paus lub ntsej muag.
