Ekwakhiweni nasekwakhiweni, ukusetshenziswa kwensimbi yesiteshi (evame ukubizwa ngokuthi insimbi yesigaba se-C) kuyinto evamile kakhulu. Lezi ziteshi zenziwe ngensimbi futhi zibunjwe njengo-C, yingakho igama lazo libizwa kanjalo. Zivame ukusetshenziswa embonini yokwakha futhi zinezindlela eziningi zokusetshenziswa. Ukuqinisekisa ukuthi ikhwalithi kanye nemininingwane yensimbi yesigaba se-C kuyagcinwa, i-American Society for Testing and Materials (ASTM) ithuthukisa amazinga ale mikhiqizo.
Izinga le-ASTM le-Insimbi enomumo we-Cibizwa ngokuthi i-ASTM A36. Le nqubo ihlanganisa izimo zensimbi yekhabhoni zekhwalithi yesakhiwo ezisetshenziswa ekwakhiweni kwamabhuloho nezakhiwo okunama-rivets, amabhawodi noma okushiselwe kanye nezinjongo ezijwayelekile zesakhiwo. Le nqubo ichaza izidingo zokwakheka, izakhiwo zemishini kanye nezinye izici ezibalulekile zezingxenye ze-C zensimbi yekhabhoni.
Esinye sezimfuneko ezibalulekile ze-ASTM A36 standard ye-Insimbi yesiteshi se-Cukwakheka kwamakhemikhali kwensimbi esetshenziswa ekukhiqizweni kwayo. Indinganiso idinga ukuthi insimbi esetshenziswa izingxenye ze-C iqukathe amazinga athile e-carbon, manganese, phosphorus, sulphur kanye nethusi. Lezi zidingo ziqinisekisa ukuthi insimbi esetshenziswa ku-C-channel inezakhiwo ezidingekayo ukuze inikeze amandla nokuqina okudingekayo ekusetshenzisweni kwesakhiwo.
Ngaphezu kokwakheka kwamakhemikhali, indinganiso ye-ASTM A36 icacisa nezakhiwo zensimbi ezisetshenziswa ensimbini yesigaba se-C. Lokhu kufaka phakathi izidingo zamandla okukhiqiza, amandla okunamathela kanye nokwandiswa kwensimbi. Lezi zakhiwo zibalulekile ukuqinisekisa ukuthi insimbi yesiteshi se-C inamandla adingekayo kanye nokuguquguquka ukuze imelane nemithwalo kanye nokucindezeleka okutholakala ezicelweni zokwakha.
Izinga le-ASTM A36 liphinde lihlanganise ukubekezelelana kobukhulu kanye nezidingo zokuqina kanye nokugoba kwensimbi yesigaba se-C. Lezi zincazelo ziqinisekisa ukuthi izingxenye ze-C ezikhiqizwe ngaleli zinga zihlangabezana nezidingo zosayizi kanye nesimo ezidingekayo ukuze zisetshenziswe kumaphrojekthi okwakha.
Sekukonke, indinganiso ye-ASTM A36 yensimbi enomumo we-C inikeza isethi ephelele yezidingo zekhwalithi nokusebenza kwalezi zinsimbi. Ngokunamathela kule ndinganiso, abakhiqizi bangaqinisekisa ukuthi izingxenye ze-C abazikhiqizayo ziyahlangabezana nezimfuneko ezidingekayo ekusetshenzisweni kokwakha.
Ngamafuphi, indinganiso ye-ASTM ye-Insimbi yesiteshi se-C, eyaziwa ngokuthi i-ASTM A36, icacisa izidingo zokwakheka kwamakhemikhali, izakhiwo zemishini, kanye nokubekezelelana kobukhulu kwalezi zinsimbi. Ngokuhlangabezana nalezi zidingo, abakhiqizi bangakhiqiza izingxenye ze-C ezisezingeni eliphezulu ezihlangabezana nezindinganiso ezidingekayo ezinhlobonhlobo zezicelo zokwakha. Kungakhathaliseki ukuthi amabhuloho, imishini yezimboni noma izakhiwo, ukunamathela ezindinganisweni zensimbi ze-ASTM izingxenye ze-C kuqinisekisa ukuphepha nokuthembeka kwensimbi esetshenziswayo.
Isikhathi sokuthunyelwe: Mashi-07-2024