Rau cov neeg yuav khoom nrhiav SPA-C Corten Steel (JIS G 3125 tus qauv) hauv ntau, qhov kev txhawj xeeb loj tshaj plaws ntawm cov khoom siv kho tshuab (yield zog, tensile lub zog) yog: Yuav ua li cas kom ntseeg tau tias txhua batch ua tau raws li tus qauv thiab tsis txhob raug nqi rov ua dua lossis kev nyab xeeb? Kev txheeb xyuas kev ua raws cai tsis tas yuav nyuaj- ntawm no yog cov lus qhia ua kom yooj yim, ua haujlwm tau zoo tsom rau cov xwm txheej kev yuav khoom txawv teb chaws, rhuav tshem cov txheej txheem ua peb kauj ruam tseem ceeb.
Kauj Ruam 1: Ua Ntej Mill Test Report (MTR) Review – Thawj Kab Ntawm Kev Tiv Thaiv
MTRs yog cov ntaub ntawv raug cai los ntawm steel mills ua pov thawj cov khoom ua raws cai, thiab lawv tsis yog -kev sib tham rau kev yuav khoom ntau. Thaum tshuaj xyuas MTRs, tsom mus rau peb lub ntsiab lus tseem ceeb kom tsis txhob ua yuam kev:
Txheeb xyuas qhov sib xws: Xyuas kom tus naj npawb cua sov, cov khoom specification (thickness, dav), thiab kom muaj nuj nqis ntawm MTR phim cov khoom tiag. Txhua tus naj npawb cua sov (ib qho khoom tawg ib zaug) yuav tsum muaj MTR tshwj xeeb -tsis txhob txais cov khoom sib xyaw yam tsis muaj ntaub ntawv sib cais.
Kev ua raws cai: Paub meej tias lub zog tawm los (Ntau dua lossis sib npaug ntawm 345MPa) thiab lub zog tensile (480-620MPa) ua tau raws li JIS G 3125 tus qauv. Tsis tas li, tshawb xyuas cov qauv kev sim (piv txwv li, tensile test per JIS Z 2241) kom ntseeg tau tias nws tau lees paub thoob ntiaj teb.
Authenticity Verification: Tsis lees txais MTRs nrog cov ntaub ntawv tsis pom kev, cov ntawv tsis sib xws, lossis cov nyiaj tsis muaj zeb. Rau siab -kev txiav txim muaj nuj nqis, nug tus neeg muag khoom kom muab ib daim qauv digital ntawm MTR ua ntej rau kev tshuaj xyuas ua ntej.
Kauj Ruam 2: Ua Ntawm -Kev Ntsuas Qhov Chaw - Rau Cov Haujlwm Tseem Ceeb
Kev tshuaj xyuas MTR yog qhov tseem ceeb, tab sis ntawm - qhov chaw kuaj qhov chaw ntxiv ib txheej ntxiv ntawm kev ruaj ntseg-tshwj xeeb tshaj yog rau kev thauj khoom- cov qauv coj los yog loj- cov phiaj xwm loj. Ua raws li cov lus qhia txawv teb chaws no - phooj ywg cov lus qhia:
Cov cai coj mus kuaj (Rau JIS Z 2201): Siv 1-2 tus qauv rau ib tus lej kub. Rau batch ntau tshaj 100 tons, nce sampling mus rau 1 specimen ib 50 tons. Cov qauv yuav tsum raug coj los ntawm cov khoom sib txawv kom ntseeg tau tias tus neeg sawv cev-tsis txhob coj mus kuaj tsuas yog los ntawm qhov chaw.
Thib peb-Party Testing Recommendation: Tso cai rau cov koom haum soj ntsuam thoob ntiaj teb muaj koob npe (xws li, SGS, Bureau Veritas) nrog cov chaw soj ntsuam hauv zos hauv koj lub tebchaws. Qhov no ua kom cov qhabnias xeem tau lees paub los ntawm cov tub ceev xwm hauv nroog thiab zam kev tsis sib haum xeeb ntawm cov ntawv xeem hauv tsev.
Kev lees txais: Yog tias qhov ntsuas tau poob hauv JIS G 3125 ntau yam, cov khoom siv tau txais. Yog tias qhov ntsuas tsis ua tiav, nthuav cov qauv mus rau 3-5 tus qauv rau ib tus lej kub; yog tias muaj teeb meem tshwm sim, tsis lees txais tag nrho cov khoom siv thiab thov nyiaj them rau ib daim ntawv cog lus.
Kauj ruam 3: Embed Protection Clauses nyob rau hauv daim ntawv cog lus - Zam kev tshaj tawm -Kev yuav khoom
Qhov kev txheeb xyuas zoo tshaj plaws yog kev tiv thaiv. Ntxiv cov ntsiab lus tseem ceeb no rau koj daim ntawv cog lus yuav khoom los tiv thaiv koj cov cai raws li tus neeg yuav khoom txawv teb chaws:
Kom meej meej lub xeev cov cuab yeej cuab tam (yield zog ntau dua los yog sib npaug rau 345MPa, tensile zog 480-620MPa) thiab xav kom cov neeg muab khoom muab MTRs rau tag nrho cov khoom.
Tuav txoj cai los ua qhov thib peb -sampling xeem. Qhia meej tias cov khoom tsis raug cai yuav raug xa rov qab los ntawm tus neeg muag khoom tus nqi, suav nrog cov nqi thauj khoom thiab kev kuaj xyuas.
Ntxiv cov lus lav: Yog tias tsis yog -SPA raws cai-C ua rau txoj haujlwm qeeb lossis teeb meem kev nyab xeeb, tus neeg muag khoom yuav tsum them cov nyiaj them rov qab.
Cov lus ceeb toom tseem ceeb rau cov neeg yuav khoom txawv teb chaws
Tsis txhob cia siab rau tus neeg xa khoom thov nkaus xwb-ib txwm thov thiab txheeb xyuas MTRs ua ntej them nyiaj.
Rau kev koom tes ntev - mus sij hawm ntev, nug cov neeg muag khoom kom muab kev tshuaj xyuas lub Hoobkas tsis tu ncua kom ntseeg tau tias kev tsim khoom zoo ib yam.
Khaws tag nrho cov ntaub ntawv pov thawj (MTRs, cov ntaub ntawv xeem, cov ntawv cog lus) sib koom ua ke -lawv tseem ceeb heev rau kev lis kev cai thiab kev soj ntsuam xyuas qhov project.
Hauv cov ntsiab lus, kev txheeb xyuas SPA-C's mechanical properties in bulk procurement relies on a combination of MTR review, on-site sampling testing, and contractual protection. Ua raws li peb kauj ruam no ua kom koj tau ua raws, siab -SPA zoo-C Corten Steel, tso lub hauv paus ruaj khov rau koj cov haujlwm txawv teb chaws.
