I. Txiav txim siab hnyav los ntawm hom tsis xws luag
1. Kev puas tsuaj loj (Unrepairable):
Sab hauv folds, delamination, inclusions, porosity, thiab dhau los ntawm -kav yog cov yam ntxwv sab hauv uas ncaj qha rau cov yeeb nkab steel tsis muaj zog. Lawv yog cov raug heev rau propagation thiab tawg nyob rau hauv siab siab, yuav tsum tau ua kom tiav scrapping.
2. Kev Tsis Txaus Siab Loj:
Deep scratches (>30μm), cov phab ntsa tuab tuab tsis sib xws, thiab cov bulges, thaum tsis nkag rau hauv cov yeeb nkab, tuaj yeem ua rau qaug zog tawg pib lossis ua rau muaj kev ntxhov siab, ua rau muaj kev phom sij. Kev hloov pauv tau pom zoo.
3. Cov Me Me Me Me (Kho tau):
Khawb khawb, abrasions, me quav quav, kab nrib pleb, thiab khawb tsuas yog cuam tshuam rau saum npoo. Yog tias qhov tob tob thiab tsis ncav cuag qhov tsis zoo ntawm phab ntsa thickness sib txawv, lawv tuaj yeem kho los ntawm kev sib tsoo, tig, thiab lwm yam.
II. Kev ntsuas qhov hnyav raws li kev siv Scenarios
1. Siab-siab, siab-kub, nplaim taws/tshuaj lom media tsheb thauj mus los (piv txwv li, roj av, tshuaj, boiler): Txhua yam tsis xws luag yog suav tias yog hnyav heev. Raws li GB / T 8163-2023, kev kho tsis raug tso cai; tej yam tsis xws luag yuav tsum tsis lees paub.
2. Cov kav dej rau cov qauv dav dav lossis qis- cov kua dej siab (piv txwv li, kev txhawb nqa hauv tsev, cov kav dej): Cov kev puas tsuaj me me tuaj yeem ua tau thiab tuaj yeem kho tau, tab sis nws yuav tsum tau ua kom ntseeg tau tias kev sib txuas lub zog thiab kev sib khi ua haujlwm tsis cuam tshuam.
III. Quantitative Judgement Raws li Kev Ntsuas Cov Qauv
1. Ultrasonic Testing (UT): If the echo height of a defect exceeds the equivalent of a Φ2mm flat-bottom hole, or the length is >5mm, nws yog suav tias yog ib qho tawm ntawm - ntawm - qauv tsis xws luag.
2. Phab ntsa Thickness Deviation: Yog hais tias qhov ntsuas phab ntsa thickness qis dua qhov tsawg kawg nkaus tus nqi teev nyob rau hauv tus qauv (xws li GB/T 8162 tso cai rau ib tug tsis zoo sib txawv ntawm 12.5%), nws yog suav hais tias yog ib tug loj geometric defect.
3. Kev Sib Nqus Qhov Ncauj: Siv cov kev ntsuas nkag los yog ntsuas cov khoom sib nqus kom paub meej tias qhov tawg nkag mus rau hauv cov yeeb nkab phab ntsa. Thaum cov kab nrib pleb nkag mus rau hauv cov yeeb nkab phab ntsa, nws suav hais tias yog qhov tsis xws luag.
