Umbhobho wentsimbi edityanisiweyo wenziwa ngokwenza amaphepha entsimbi kwimilo yetyhubhu kwaye emva koko udibanise umthungo. Zombini iinkqubo ezishushu kunye nezibandayo zisetyenziselwa ukudala i-tubing engenasici, kunye nenkqubo ebandayo ivelisa ukugqiba okugudileyo kunye nokunyamezelana okungqongqo kunokubumba okushushu. Zombini iinkqubo zenza umbhobho wensimbi ongenasici ochasayo ukubola, ubonisa amandla aphezulu kunye nokuqina.

Umbhobho wensimbi engenasiciicocwe ngokulula kwaye ivalwe inzala kwaye inokudityaniswa lula, yenziwe ngoomatshini, okanye igotywe ukwenza imilo egobileyo. Oku kudityaniswa kwezinto kwenza umbhobho wentsimbi ibe lolona khetho lubalaseleyo kusetyenziso lwezakhiwo, ngakumbi ezo apho iityhubhu zinokuvezwa kwindawo ezonakalisayo.

Ngomhla woku-1 kuNovemba ka-2024, iKomishoni yoRhwebo yaMazwe ngaMazwe yase-US (USITC) yamisela uphononongo lwesithathu lokutshona kwelanga lokuchasana nokulahla (AD) kunye nemisebenzi echaseneyo (CVD) kwimibhobho yoxinzelelo lwentsimbi edityanisiweyo esuka eTshayina, kunye nophononongo lwesibini lokutshona kwelanga kwe-AD. imisebenzi kwiimveliso ezifanayo ezivela eMalaysia, Thailand, kunye neVietnam, ukufumanisa ukuba ukucinywa kweAD kunye neeodolo zeCVD ezikhoyo kwimveliso yesifundo kungakhokelela ekubeni ukuqhubekeka okanye ukuphinda ukwenzakala kwezinto kwishishini lase-US ngexesha elibonakalayo.

Ngomhla we-4 kaNovemba, iSebe lezoRhwebo lase-US (i-USDOC) libhengeze ukuqaliswa kwe-AD yesithathu kunye ne-CVD yokuphonononga ukushona kwelanga kwimveliso evela e-China, kunye nokuhlaziywa kwe-AD yesibini yokutshona kwelanga kwiimveliso ezifanayo ezivela eMalaysia, eThailand naseVietnam.

Amaqela anomdla kufuneka angenise impendulo yawo kwesi saziso kunye nolwazi olufunekayo ngomhla wokugqibela kaDisemba 2, 2024, kwaye izimvo malunga nokufaneleka kweempendulo kufuneka zifakwe ngoJanuwari 2, 2025.

300 series gradeyenziwe ngentsimbi eshayinayoyenziwe kuluhlu lweemveliso ezibandakanya iityhubhu zentsimbi, imibhobho yentsimbi, kunye nezinye iimveliso ezahlukeneyo. Zombini i-304 kunye ne-316 iityhubhu zensimbi ziyi-alloys ezisekelwe kwi-nickel ekulula ukuyigcina, ukuxhathisa ukubola, kunye nokugcina amandla kunye nokuqina kwiqondo lokushisa eliphezulu.

Ukumisela ukuba leliphi ibakala lentsimbi elona lifanelekileyo kwisicelo sakho kuxhomekeke kwisicelo esicetywayo kunye nezinto ezisingqongileyo ezifana nobushushu okanye ukuvezwa kwekloridi.

• Uhlobo lwe-304 yensimbi engagqwali iyaxhathisa kwaye kulula ukuyicoca, nto leyo eyenza ibe lolona hlobo luqhelekileyo lwensimbi engenasici esetyenziselwa iityhubhu kunye nezinye iindawo zentsimbi. Iityhubhu ze-304 zensimbi ezingenasici zihlala zisetyenziselwa ukwakha kunye nokuhlobisa izicelo.
• Uhlobo lwe-316 yensimbi engenastainless ifana ne-304 engenasici kuba iyakwazi ukumelana ne-corrosion kwaye kulula ukuyicoca. I-316 ayinastainless, nangona kunjalo, inenzuzo encinci kuba kodwa iyakwazi ukumelana nokubola okubangelwa yikloridi, iikhemikhali, kunye nezinyibilikisi. Le nto eyongezelelweyo yenza i-316 insimbi engenasici isisombululo esikhethiweyo kwizicelo apho kukho ukubonakaliswa rhoqo kwiikhemikhali okanye kwizicelo zangaphandle apho kukho ukubonakaliswa kwetyuwa. Imizi-mveliso eyaziwayo ngokusebenzisa i-316 yensimbi engenasici ibandakanya imizi-mveliso, utyando kunye nolwandle.

umbhobho wensimbi engenasici