Monga Chinese Corten zitsulo zotumiza kunja kwa zaka 8 mu bizinezi, Ndawonapo ambiri obwera kunja kulakwitsa chimodzimodzi mtengo: kulumpha Mill Test Certificate (MTC) kupulumutsa nthawi pang'ono kapena kupeza mtengo wotsika pang'ono. Ndiloleni ndimveke bwino-ichi sichiri "chabwino-kukhala-chokhala" chikalata. Ndikoyenera-kukhala ndi,{7}}zolemba zosagwirizana nazo zomwe zingakupangitseni kapena kusokoneza polojekiti yanu ya Corten steel, mbiri yanu, ndi tsogolo lanu.
Makasitomala abwera kwa ine atatenthedwa: adagula zitsulo za Corten kuchokera kwa wogulitsa katundu yemwe anakana kupereka MTC panthawi yamalonda, koma anapeza kuti chitsulocho sichinali Corten weniweni-chitsulo chotsika mtengo cha carbon chokhala ndi zokutira dzimbiri zabodza. Iwo anali atakumana kale ndi dzimbiri, kuchedwa kwa ntchito, ndi kutayika kwakukulu kwachuma m'malo ndi chindapusa panthawi yomwe adazindikira nkhaniyi. Tisalole kuti akhale inuyo.
Lero, ndifotokoza kuti MTC ndi chiyani, chifukwa chiyani-singathe kukambirana pofufuza zitsulo za Corten, ndi zomwe zingachitike ngati mukazilumpha-zonse momveka bwino.Chingerezi, palibe mawu aukadaulo, komanso kumvetsetsa bwino.
Choyamba: Kodi MTC (Mill Test Certificate) ndi Chiyani Kwenikweni?
Tiyeni tisungendi zophweka. MTC ndi chikalata choperekedwa ndi mphero yachitsulo yomwe idapanga chitsulo cha Corten. Zili ngati "chikalata chobadwira" chachitsulo-kutsimikizira komwe chinachokera, chomwe chinapangidwa, komanso kuti chikugwirizana ndi zomwe mudayitanitsa.
ZaChitsulo cha Corten, MTC yovomerezeka idzatchula mfundo zazikuluzikulu za polojekiti yanu: kapangidwe kake (kuchuluka kwa mkuwa, chromium, silicon muzitsulo-izi ndi zinthu zomwe zimapangitsa kuti Corten asamachite dzimbiri{1}}kusagwira ntchito), makina (kulimba kwamphamvu, kutulutsa mphamvu{2}}zofunika kwambiri pamapulojekiti omanga), mill's, ndi nambala ya AS2sutch ndi AS2sutch kwa Corten A, ASTM A588 ya Corten B).
Sichikalata chongopeka-tsamba limodzi-limodzi lokhala ndi manambala omveka bwino komanso siginecha. Koma musalole kuphweka kwake kukupusitseni. Pepala ili ndichitetezo chanu chabwino kwa ogulitsa oipa ndi zitsulo zolakwika.
Chifukwa chiyani MTC siili-Zokambirana za Corten Steel Sourcing
Corten Steel ndiyotsika mtengo, ndipo imagwiritsidwa ntchito pamapulojekiti omwe afunika kukhala-zomangamanga za m'mphepete mwa nyanja, zokhotakhota panja, mizati yomanga, ngakhalenso zaluso za anthu onse. Kudumphadumpha pa MTC kuli ngati kugula galimoto yopanda dzina-mulibe umboni kuti ndizomwe munalipira. Nazi zifukwa 4 zazikulu zomwe mungatheosadumpha MTC, kutengera zomwe ndawona ndi makasitomala athu:
1. Zimatsimikizira Kuti Mukupeza Zitsulo Zenizeni Za Corten (Osati Zabodza Kapena Zosavomerezeka)
Izi ndi bpezani chimodzi. Pali ogulitsa ambiri opanda khalidwe kunjaku omwe amasiya zitsulo za carbon ngati Corten{1}} amazipaka lalanje kuti zizioneka ngati zili ndi patina. Koma chitsulo cha kaboni chilibe mkuwa, chromium, kapena silicon yomwe imapangitsa kuti Corten isamve dzimbiri-. Idzawonongeka pakadutsa zaka 3-5, pomwe Corten weniweni imatha 30+.
MTC imaletsa chinyengo ichi. Ngati ogulitsa sangapereke MTC yomwe imawonetsa kapangidwe kake koyenera (mwachitsanzo, 0.20–0.35% yamkuwa wa Corten), akugulitsa zitsulo zabodza. Ndidali ndi kasitomala ku Dubai yemwe adatsala pang'ono kugula matani 50 a "Corten" kuchokera kwa ogulitsa omwe adati, "MTC ndizosafunikira." Tidafunsa chitsanzo, tidachiyesa, ndipo tidapeza kuti chinali chitsulo cha kaboni -chikumupulumutsa $40,000 komanso tsoka la polojekiti.
2. Imawonetsetsa Kutsatira Miyezo ya Pulojekiti ndi Malamulo am'deralo
Zambiri mwazinthu zathuakugwira ntchito zamalonda kapena zapagulu-sukulu, milatho, ndi nyumba zamaofesi. Mapulojekitiwa ali ndi miyezo yokhwima (ASTM, EU, zizindikiro zomangira zakomweko) zomwe zimafuna chitsulo cha Corten kuti chikwaniritse zofunikira zamakina ndi mankhwala.
Popanda MTC, simungatsimikizire kuti chitsulo chanu chikukwaniritsa mfundozo. Izi zikutanthauza kuti polojekiti yanu idzalephera kuwunika, mudzalipidwa, ndipo mungafunike kugwetsa ndikusintha chitsulocho. Mwachitsanzo, kasitomala ku Singapore anali akugwira ntchito yodutsa m'mphepete mwa nyanja-malamulo am'deralo amafunikira Corten B yokhala ndi mphamvu yochepera 550 MPa. Wogulitsa woyamba yemwe adalumikizana naye sanathe kupereka MTC; tinapereka imodzizomwe zinasonyeza momveka bwino kuti chitsulocho chinakwaniritsa zofunikira za 550 MPa, ndipo polojekiti yawo inapita kukayendera popanda zovuta.
3. Imakutetezani ku Ngongole (Zofunika Kwambiri pa Ntchito Zomangamanga)
Ngati inu mulikugwiritsa ntchito Corten popanga ma structural parts{-mitanda, mizati, ma trusses{1}}chiwopsezo chachikulu. Ngati chitsulocho chikulephera (chifukwa ndi chotsika), mukhoza kuimbidwa mlandu wovulala, kuwonongeka kwa katundu, ndi milandu yamtengo wapatali.
MTC ndi umboni wanu kuti mwapeza zitsulo zabwino zomwe zimakwaniritsa zofunikira. Ngati china chake sichikuyenda bwino (chomwe sichimachita kawirikawiri ndi Corten weniweni), MTC ikuwonetsa kuti mwachita khama lanu. Sindinakumanepo ndi vuto la kasitomala pamene amaumirira MTC-chifukwa chitsulozinali chimodzimodzi zomwe zimayenera kukhala.
4. Zimakupulumutsirani Ndalama Pakapita Nthawi (Palibe Zosintha Zofunika)
KudumphaMTC ikhoza kukupulumutsirani madola mazana angapo kutsogolo, koma idzakuwonongerani masauzande angapo pambuyo pake. Corten yabodza kapena yotsika mtengo ichita dzimbiri mwachangu, ndikukukakamizani kusintha magawo, kuchedwetsa mapulojekiti, ndikutaya ndalama pantchito ndi zida.
Wogula ku Thailand adagula matani 30 a "Corten A" popanda MTC kuti asunge $500. Pasanathe zaka 2, zitsulo zinayamba kuchita dzimbiri-zinafunika kusintha mbali zonse, zomwe zinawononga $25,000. Akadapempha MTC, akanawona chitsulocho chilibe mkuwa (chofunikira kwambiriCorten) ndikupewa cholakwikacho.
Zomwe Muyenera Kuyang'ana mu MTC Yovomerezeka (Osanyengedwa)
Osati zonseMa MTC ndi enieni. Otsatsa ena osachita bwino amawapanga, kotero muyenera kudziwa zomwe muyenera kuyang'ana. Izi ndi zomwe ndimauza makasitomala athu kuti azifufuza-zofufuza zosavuta, zosavuta zomwe zimatenga mphindi 5:
- Dzina la Mill & Batch Number:MTC iyenera kukhala ndi dzina lonse la mphero yachitsulo (osati chizindikiro chabe) ndi nambala yapadera ya batch. Mutha kulumikizana ndi mphero kuti mutsimikizire kuti nambala ya batch ndi yeniyeni.
- Siginecha & Tsiku:MTC iyenera kusainidwa ndi ofisala woyang'anira khalidwe la mphero ndikulemba tsiku. Palibe siginecha=yabodza.
Quick Reference Guide: Corten MTC Chemical & Mechanical Requirements |
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| Corten kalasi | Standard | Kupanga Kwama Chemical (Cu/Si/Mn) |
Katundu Wamakanika (Tensile / Yield) |
| Corten A | Chithunzi cha ASTM A242 | Cu: 0.20–0.35%Si: 0.15–0.35%Mn: 0.80–1.25% |
Tensile: 480–620 MPaYield: 345 MPa min. |
| Corten B | Chithunzi cha ASTM A588 | Cu: 0.20–0.35%Si: 0.25–0.50%Mn: 0.80–1.35% |
Tensile: 550–830 MPaYield: 410 MPa min. |
Opereka Zifukwa Zomwe Amapereka (Ndi Momwe Mungayankhire)
Ndi heaperekani chowiringula chilichonse m'buku kuchokera kwa ogulitsa omwe sakufuna kupereka MTC. Nawa momwe mungawatsekere:
"MTC ndi mtengo wowonjezera"
→ Yankho:"Ayi, akuphatikizidwa mumtengo wachitsulo. Ngati simungathe kupereka, ndidzapeza wogulitsa amene angakwanitse."
"Tilibe MTC yamaoda ang'onoang'ono"
→ Yankho:"Kukula kulibe kanthu. Gulu lililonse la Corten liyenera kukhala ndi MTC, ngakhale tani 1."
"MTC itumizidwa pambuyo pake."
→ Yankho:"Ndikufuna ndisanalipire kapena ndisanatumize. Palibe MTC, palibe dongosolo."
Mawu Omaliza: MTC ndi Bwenzi Lanu Lapamtima Mukapeza Corten
Monga ChineseCorten steel exporter, sitimatumiza tani imodzi popanda MTC yovomerezeka. Sikungotsatira malamulo{1}}komanso kulemekeza makasitomala athu ndikuwonetsetsa kuti ntchito zawo zikuyenda bwino.
Sourcing Corten steel ndi ndalama zambiri-zimene simungakwanitse kuziika pachiwopsezo podumpha MTC. Monga momwe tafotokozera, chikalata chosavutachi ndicho chitetezo chanu chabwino kwambiri ku zachinyengo,{2}}kusatsatira malamulo, komanso zolakwika zamtengo wapatali zomwe tawonapo kuti makasitomala ambiri akukumana nazo. Kaya mukugula tani imodzi kapena 100, kaya ndi yokongoletsera kapena mlatho wa m'mphepete mwa nyanja-nthawi zonse, funsani MTC nthawi zonse.
Ngati mukuganiza momwe mungayang'anire MTC, kapena ngati mukufuna ogulitsa odalirika a Corten omwe amapereka ma MTC olondola ndikuyitanitsa kulikonse.Monga Chinese Corten zitsulo zotumiza kunja, takhala tikutumiza kumisika yayikulu ku Southeast Asia, Middle East, ndi Africa, ndipo oda iliyonse imabwera ndi MTC yovomerezeka, yotsimikizika-palibe kupatula. Pulojekiti yanu ikuyenera kukhala ndi chitsulo chabwino, ndipo MTC ndi momwe mumatsimikizira kuti mukuchita ndendende.
