Raws li GB/T3091-2015 "Welded Steel Pipes for Low-Pressure Fluid Transport", qhov zoo ntawm cov kav hlau steel yuav tsum du, thiab tsis muaj qhov tsis xws luag xws li folds, tawg, delaminations, thiab ceg vuam raug tso cai. Qhov saum npoo ntawm cov yeeb nkab steel raug tso cai kom muaj qhov tsis xws luag xws li khawb, khawb, dislocation ntawm welds, kub hnyiab thiab nti uas tsis pub tshaj qhov tsis zoo ntawm cov phab ntsa thickness. Tso cai rau kom nce phab ntsa thickness ntawm lub weld thiab muaj nyob rau hauv lub weld tav.
Cov yeeb nkab ncaj seam yuav tsum raug kuaj xyuas cov cuab yeej cuab tam, kev sim flattening thiab flaring test, thiab yuav tsum ua kom tau raws li qhov yuav tsum tau teev tseg hauv tus qauv. Cov yeeb nkab steel yuav tsum muaj peev xwm tiv taus qee qhov kev siab sab hauv, thiab yog tias tsim nyog, 2.5Mpa siab ntsuas yuav tsum tau ua kom tsis txhob muaj qhov xau rau ib feeb. Txoj kev ntsuas eddy tam sim no raug tso cai los hloov qhov ntsuas hydrostatic.
Eddy kev tshuaj xyuas tam sim no yog ua raws li GB/T7735-2004 "Steel Pipe Eddy Current Inspection Method". Txoj kev tshawb nrhiav qhov tsis txaus ntseeg tam sim no yog kho qhov kev sojntsuam ntawm tus ncej, khaws qhov deb ntawm 3-5mm los ntawm kev kuaj pom qhov tsis zoo thiab qhov vuam seam, thiab ua tiav scan ntawm weld seam los ntawm kev txav ceev ntawm cov hlau. cev. Lub teeb pom kev tsis txaus ntseeg tau ua tiav thiab txheeb xyuas los ntawm eddy tam sim no flaw detector. Yuav kom ua tiav lub hom phiaj ntawm qhov tsis pom kev. Tom qab kuaj pom qhov tsis zoo, cov yeeb nkab welded raug txiav mus rau qhov ntev ntev nrog lub dav hlau pom, thiab tom qab ntawd tawm ntawm cov kab sib dhos los ntawm txoj kab rov tav. Ob qhov kawg ntawm cov yeeb nkab steel yuav tsum tau chamfered nrog lub taub hau tiaj tus, luam tawm nrog cov cim, thiab cov yeeb nkab tiav yuav tsum tau ntim thiab ntim rau hauv hexagons ua ntej tawm hauv lub hoobkas.
