Uyini Umehluko Phakathi kwe-Q235 ne-SS400?

I-Q235 kanye ne-SS400 yizinsimbi ezimbili zesakhiwo sekhabhoni ezisetshenziswa kabanzi ezivame ukubhekwa njengezifanayo ekusebenzeni, kodwa zivela ezindinganisweni ezahlukene zikazwelonke futhi zinomehluko omncane ekwakhiweni kwamakhemikhali kanye nezakhiwo zemishini. I-Q235 ichazwa ngaphansi kwendinganiso ye-GB/T 700 yaseShayina, kanti i-SS400 iwela ngaphansi kwendinganiso ye-JIS G3101 yaseJapan. Naphezu kwemvelaphi yazo ehlukene, zivame ukusetshenziswa ezisetshenzisweni zesakhiwo ezifanayo njengamabhuloho, izakhiwo, kanye nezingxenye zemishini.

Ngokwekhemikhali, zombili i-Q235 ne-SS400 ziyizinsimbi ezinekhabhoni ephansi, ezakhiwe kakhulu ngensimbi enenani elincane lekhabhoni, i-manganese, i-phosphorus, nesulfure. I-Q235 ngokuvamile inokuqukethwe okuphezulu kwekhabhoni okungu-0.22%, futhi imikhawulo kwezinye izakhi iqinile ukuqinisekisa ukushibilika okungcono kanye nokuguquguquka. I-SS400 inokwakheka okufanayo kodwa ivumela ukuguquguquka okuncane ezintweni ezithile kuye ngenqubo yokukhiqiza. Lokhu kungafani kuvame ukuba kuncane, kodwa kwezinye izinhlelo zokusebenza—ikakhulukazi lezo ezihilela izidingo zokushibilika eziqondile noma isitifiketi sezinto zomhlaba wonke—zingase zifaneleke.

Ngokwemishini, i-Q235 iqanjwe ngamandla ayo okukhiqiza angu-235 MPa, kuyilapho i-SS400 inikeza amandla okukhiqiza afanayo angaba ngu-245 MPa. Amandla abo okudonsa nawo awela ebangeni elifanayo, ngokuvamile aphakathi kuka-375 kuya ku-500 MPa. Ngenxa yalokho, zombili izinsimbi zingasebenza kahle ekusetshenzisweni kwesakhiwo futhi zivame ukusetshenziswa ngokushintshana uma amazinga endawo evuma. Kodwa-ke, kubalulekile ukuqaphela ukuthi ukushintshwa kwezinto kufanele kuvunyelwe njalo onjiniyela besakhiwo noma iziphathimandla zokuklama, ikakhulukazi kumaphrojekthi alawulwayo noma abalulekile ekuphepheni.

Ngokuphathelene nokusetshenziswa, i-Q235 ivame ukutholakala emakethe yasekhaya yaseShayina futhi ivame ukukhethwa ukwakhiwa okungabizi kakhulu kanye nokwenziwa okuvamile. I-SS400, njengoba iyindinganiso yaseJapan, yamukelwa kabanzi eJapane nakwezinye izingxenye zase-Asia. Lapho kuhileleke ukuhweba kwamanye amazwe, ukukhetha phakathi kwe-Q235 ne-SS400 kungase kuncike ekutholakaleni kweketanga lokuhlinzeka, izidingo zesitifiketi, kanye nezintandokazi zamakhasimende. Ekugcineni, nakuba i-Q235 ne-SS400 zifana ngezindlela eziningi, ukuqaphela umehluko wazo ocashile kuqinisekisa ukwenza izinqumo ezingcono ekukhetheni izinto.