Yintoni imozulu yentsimbi


Njengoko besitshilo, i-weathering steel ikwabizwa ngokuba yi-weathering steel. Ngamafutshane, uya kufumanisa ukuba le ntsimbi luphawu lwentengiso ye-United States Steel Corporation. Ingxaki ngezinto zokwakha kukuba ekuhambeni kwexesha udla ngokufumana umaleko womhlwa usenza phezu kwazo. Nokuba uzama kangakanani na ukuyimisa, iya kungena. Yiyo loo nto i-US Steel yeza nombono. Ngokubonelela ngezinto zokujonga amehlo, baya kukwazi ukukhusela olo luhlu lothuli. Ayisiyiyo loo nto kuphela, iphinda ithintele intsimbi ekuwohlokeni ngakumbi. Ngoko ke akufuneki ube nexhala malunga nokuzoba amaxesha ngamaxesha.


Ke ngelixa konke kuvakala kukuhle kakhulu ukuba yinyani, kuya kufuneka ubeke izinto kwindawo enenyani. Oku kungenxa yokuba ngoxa umhlwa uya kuqhubeka ujiya, intsimbi iya kuba ngqindilili ngaphandle kokuba izimisele ukuzinza. Emva kokufikelela kwindawo yokuphuka, insimbi i-perforates kwaye emva koko idinga ukutshintshwa. Yingakho kubalulekile ukukhumbula ukungafani kweemeko zokusingqongileyo xa ukhetha olu hlobo lwensimbi.

Isebenza njani intsimbi yemozulu?

Zonke okanye ezininzi iintsimbi eziphantsi kwe-alloy zirusi ngenxa yobukho bomoya kunye nokufuma. Izinga ekwenzeka ngalo oku kuya kuxhomekeka ekutyhilekeni kwayo kumanzi, ioksijini kunye nezingcolisi zomoya ezibetha phezulu. Njengoko inkqubo iqhubela phambili, umaleko womhlwa wenza umqobo othintela ungcoliseko, amanzi kunye neoksijini ukuba idlule. Oku kuya kunceda ukulibazisa inkqubo yokurusa ukusa kumlinganiselo othile. Ngokuhamba kwexesha, olu maleko lunomhlwa luyahlukana nentsimbi. Njengoko uya kuba nako ukuqonda, lo ngumjikelo ophindaphindiweyo.

Kwimeko ye-Weathering steel, nangona kunjalo, izinto zisebenza ngokwahlukileyo. Ngelixa inkqubo yokurusa ngokuqinisekileyo iya kuqala ngendlela efanayo, ukuqhubela phambili kuya kwahluka kancinci. Oku kungenxa yokuba i-alloying elements kwintsimbi yenza umaleko ozinzileyo womhlwa onamathela kwisiseko sesinyithi. Oku kuya kunceda ukwenza umqobo okhuselayo ukukhusela ukungena okuqhubekayo kokufuma, i-oksijini kunye nokungcola. Ngenxa yoko, uya kuba nakho ukufumana amaqondo asezantsi kakhulu okuthotywa kunokuba afunyanwa ngentsimbi eqhelekileyo yesakhiwo.

Isinyithi semozulu yemozulu (intsimbi yemozulu)


Umahluko osisiseko onokuwufumana phakathi kweentsimbi eziqhelekileyo zesakhiwo kunye nemozulu kukubandakanywa kobhedu, i-chromium kunye nezinto ze-nickel alloy. Oku kuya kunceda ukomeleza ukunyangeka kwentsimbi yemozulu. Ngakolunye uhlangothi, xa iintsimbi eziqhelekileyo zesakhiwo kunye nemigangatho yezinto eziphathekayo zensimbi zezulu zifaniswa, zonke ezinye izinto zibonakala zifana kakhulu okanye zingaphantsi.


I-ASTM A242


Ikwaziwa njengealloyi eyi-A 242 yoqobo, inamandla esivuno angama-50 kSi (340 Mpa) kunye namandla okugqibela angama-70 kSi (480 Mpa) okukhanya kunye neemilo eziqengqelekayo eziqengqelekayo. Ngokuphathelele iipleyiti, zinokuba zikota ezintathu ze-intshi ubukhulu. Ukongeza, inamandla okugqibela e-67 ksi, amandla emveliso angama-46 ksi, kunye nobukhulu beplate ukusuka kwi-0.75 ukuya kwi-1.

Awona mandla okugqibela kunye nokomelela kwesivuno kwawona macwecwe ajiyileyo ajikiweyo kunye neeprofayili yi-63 kSi kunye ne-42 kSi.


Ngokuphathelele udidi lwayo, ungayifumana kwiintlobo ze-1 kunye ne-2. Njengoko igama lithetha, zonke ziya kusetyenziselwa izicelo ezahlukeneyo, kuxhomekeke kubukhulu babo. Kwimeko yohlobo loku-1, isetyenziswa ngokuqhelekileyo kulwakhiwo, izakhiwo zezindlu, kunye neelori. Ngokuphathelele uhlobo lwentsimbi yesi-2, ekwabizwa ngokuba yiCorten B, isetyenziswa ikakhulu kwiikhreyini zabahambi okanye iinqanawa, kunye nefenitshala yasezidolophini.

I-ASTM A588


Ngamandla okuqina okugqibela angama-70 ksi kunye nokomelela kwesivuno ubuncinci be-50 ksi, uya kufumana le ntsimbi yemozulu kuzo zonke iimilo ezisongiweyo. Ngokumalunga nobukhulu bepleyiti, oku kuya kuba yi-4 intshi ubukhulu. Amandla okuqina okugqibela ngama-67 kSI ubuncinane kwii-intshi ezi-4 ukuya kwezi-5. Amandla okugqibela obunzima obuncinci be-63 ksi kunye namandla esivuno ubuncinane angama-42 ksi kwi-5 - ukuya kwi-8-intshi yeepleyiti.