Izinga elisha le-steel rebar selifikile futhi lizoqala ukusebenza ngokusemthethweni ekupheleni kukaSepthemba

Inguqulo entsha yendinganiso kazwelonke ye-rebar yensimbi i-GB 1499.2-2024 "insimbi yekhonkrithi eqinisiwe ingxenye 2: imigoqo yensimbi egoqwe ngokushisa" izoqala ukusebenza ngokusemthethweni ngomhlaka-25 Septhemba 2024

Esikhathini esifushane, ukusetshenziswa kwale nqubo entsha kunomthelela omncane ezindlekwenii-rebarukukhiqiza nokuhweba, kodwa ngokuhamba kwesikhathi kubonisa umbono oqondisayo jikelele wenhloso yenqubomgomo yokuthuthukisa ikhwalithi yemikhiqizo yasekhaya nokukhuthaza amabhizinisi ensimbi ukuba abe maphakathi naphezulu ochungechungeni lwezimboni.
I. Izinguquko ezinkulu endinganisweni entsha: ukuthuthukiswa kwekhwalithi kanye nokusungula izinto ezintsha
Ukuqaliswa kwendinganiso ye-GB 1499.2-2024 kulethe izinguquko ezibalulekile eziningana, ezenzelwe ukuthuthukisa ikhwalithi yemikhiqizo ye-rebar nokuletha izindinganiso ze-rebar zaseShayina ezihambisana nezindinganiso zomhlaba wonke. Nazi izinguquko ezine ezibalulekile:

1. Indinganiso entsha iqinisa kakhulu imikhawulo yokubekezelela isisindo se-rebar. Ngokukhethekile, ukuphambuka okuvunyelwe kwe-rebar engu-6-12 mm ububanzi kungu-±5.5%, u-14-20 mm ungu-+4.5%, kanti u-22-50 mm ungu-+3.5%. Lolu shintsho luzothinta ngqo ukunemba kokukhiqiza kwe-rebar, okudinga abakhiqizi ukuthi bathuthukise izinga lezinqubo zokukhiqiza kanye namakhono okulawula ikhwalithi.
2. Kwamazinga e-rebar anamandla aphezulu njengeI-HRB500E, I-HRBF600Ekanye ne-HRB600, indinganiso entsha iyalela ukusetshenziswa kwenqubo yokucwenga ama-ladle. Lesi sidingo sizothuthukisa kakhulu ikhwalithi kanye nokuqina kokusebenza kwalawa mandla aphezulu.imigoqo yensimbi, futhi sithuthukise imboni ngendlela eya ekuthuthukisweni kwensimbi enamandla aphezulu.
3. Ezimweni ezithile zokusetshenziswa, indinganiso entsha yethula izidingo zokusebenza kokukhathala. Lolu shintsho luzothuthukisa impilo yesevisi kanye nokuphepha kwe-rebar ngaphansi kwemithwalo enamandla, ikakhulukazi amabhuloho, izakhiwo eziphakeme kanye neminye imisebenzi enezidingo eziphezulu zokusebenza kokukhathala.
4. Izindlela zokuhlola ezijwayelekile zokuvuselela amasampula kanye nezinqubo zokuhlola, okuhlanganisa nokwengezwa kokuhlolwa kokugoba okuphambene kwe-"E" grade rebar. Lezi zinguquko zizothuthukisa ukunemba nokuthembeka kokuhlolwa kwekhwalithi, kodwa futhi zingase zikhulise izindleko zokuhlola zabakhiqizi.
Okwesibili, umthelela ezindlekweni zokukhiqiza
Ukusetshenziswa kwale nqubo entsha kuzozuzisa inhloko yamabhizinisi okukhiqiza izintambo ukuthuthukisa ikhwalithi yomkhiqizo, kwandise ukuncintisana emakethe, kodwa futhi kulethe nezindleko zokukhiqiza ezingaphelele: ngokocwaningo, inhloko yamabhizinisi okukhiqiza insimbi ngokuhambisana nezindleko zokukhiqiza umkhiqizo omusha ojwayelekile izokhuphuka cishe ngama-yuan angu-20 ngethani.
Okwesithathu, umthelela wemakethe

Indinganiso entsha izokhuthaza ukuthuthukiswa nokusetshenziswa kwemikhiqizo yensimbi enamandla aphezulu. Isibonelo, imigoqo yensimbi enamandla kakhulu enamandla angu-650 MPa ingathola ukunakwa okwengeziwe. Lolu shintsho luzoholela ezinguqukweni ekuxubeni komkhiqizo kanye nesidingo semakethe, okungase kuthande lezo zigayo zensimbi ezingakhiqiza izinto ezithuthukisiwe.
Njengoba amazinga ephakanyiswa, isidingo semakethe se-rebar esezingeni eliphezulu sizokhula. Izinto ezihlangabezana namazinga amasha zingadinga intengo ephezulu, okuzokhuthaza izinkampani ukuthi zithuthukise ikhwalithi yomkhiqizo.