Qhov twg yog qhov zoo tshaj plaws rau txoj kab uas hla loj kauv steel kav rau kev thauj dej?

Kev ntsuas hydrostatic siab ntawm covkauv steel yeeb nkabyuav tsum tau xau-dawb los ntsuas qhov hydraulic siab ntawm txhua lub raj xa dej. Raws li kev ntsuas siab ntsuas siab Mpa S-dej siab ntsuas, qhov ntsuas ntsuas ntsuas ntsuas P=2ST / D, uas qhov ntsuas hydraulic ua tau raws li cov qauv sib xws. Qhov chaw tsim khoom me me (Q235 yog 235Mpa) raug xaiv los ntawm 60% ntawm cov neeg.
Lub sijhawm hloov kho: D<508 pressure test time is less than 5 seconds, D2508 test pressure holding time is less than 10 seconds, steel pipe welds, steel heads and ring welds 4 non-destructive testing should be performed by X-ray or ultrasonic inspection.
Rau cov khoom siv hluav taws xob zoo tib yam yuav tsum tau thauj mus rau cov kav dej kauv, 100% SX-ray lossis ultrasonic kuaj yuav tsum tau siv los kuaj xyuas dej, dej phwj tuaj, huab cua, chav dej, thiab lwm yam. Kauv welds yuav tsum tau soj ntsuam los ntawm X-ray los yog ultrasonic soj ntsuam (20%). ). Nto lossis zoo li zoo ntawm txoj kab uas hla loj kauv steel yeeb nkab
(1) Loj-inch kauv steel yeeb nkab manufacturers yuav tsum ua tib zoo tshuaj xyuas tus naj npawb txaus ntawm qhov tsis xws luag thiab xyuas kom meej tias lawv qhov tob tau raug soj ntsuam kom raug, thiab xyuas kom meej tias txhua qhov chaw tsis tas yuav tsum tau ua tib zoo tshuaj xyuas, tab sis ua raws li cov lus cog tseg. (2).
(2) Deg tsis xws luag uas nws qhov tob tob yog ntau tshaj lub nominal phab ntsa thickness ntawm 12.5, los yog qhov twg nws yog ib qhov nyuaj los xyuas kom meej ib tug me me tag nrho thickness yuav tsum tau txiav txim raws li qhov tsis xws luag. Kev puas tsuaj loj-ntev kauv steel kav yuav tsum tau ua nrog: siv txoj kev sib tsoo kom tshem tawm cov teeb meem no thiab xyuas kom meej tias cov tuab yog nyob rau hauv qhov kev teev tseg; kho los ntawm welding. Cov seem uas raug muab tshem tawm tsis pub dhau lub sijhawm ntev.
(3) Cov kav dej loj-ntev kauv steel yeeb nkab yuav tsum tshem tawm cov teeb meem hauv qab no: 1. Mechanical indentations, abrasions thiab pits nrog qhov tob tshaj 1.6 meters. Cov dents thiab khawb tau hais los ntawm no muaj xws li hlau dents thiab dents. Cov menyuam cov cim, pob khawb, notches, embossing marks, thiab lwm yam.; 2 Qhov tob tshaj 5, nominal phab ntsa thickness thiab ua tib zoo tshuaj xyuas raws li tau piav nyob rau hauv (1) saum toj no, feem ntau hu ua nti, wrinkles, folds, khawb los yog tawg. Qhov kev pom qhov muag tsis zoo no.

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