Ekwakhiweni kwesimanje, i-rebar iyisisekelo esiyinhloko, idlala indima ebalulekile kukho konke kusukela ezakhiweni eziphakeme eziphakeme kuya emigwaqweni egobile. Izakhiwo zayo eziyingqayizivele ziyenza ibe yingxenye ebalulekile ekuqinisekiseni ukuphepha nokuqina kwesakhiwo.
I-Rebar, igama elivamile lemigoqo yensimbi egoqwe ngokushisa, ithola igama layo ebusweni obugoqwe ngokushisa. Isigaba sayo esiphambeneyo ngokuvamile siyindilinga, sinezimbambo ezimbili ezinde kanye nezimbambo eziphambeneyo ezilinganiselwe ngobude bayo. Izimbambo eziphambeneyo zinomumo we-crescent futhi azihlangani nezimbambo ezinde. Lokhu kuthungwa okuyingqayizivele kobuso akugcini nje ngokuqinisa isibopho phakathi kwe-rebar nokhonkolo kodwa futhi kuthuthukisa kakhulu amandla ayo okubamba kanye nokuqina okuphelele ezakhiweni zesakhiwo. I-Rebar ngokuvamile yenziwe ngensimbi yesakhiwo sekhabhoni noma insimbi yesakhiwo esingena-alloy futhi iza ngobubanzi obukhulu, kusukela ku-6 mm kuya ku-50 mm, ukuze ivumelane nezidingo ezahlukene zesakhiwo.
I-Rebar inezakhiwo ezinhle kakhulu zemishini, isebenzisa ngokugcwele izakhiwo zensimbi zemishini ngesikhathi sokucindezeleka, okwenza ibe ngcono kune-rebar evamile. Ubuso bayo buphathwa ukuze bakhe ungqimba olujiyile lwe-oxide, oluhlinzeka ngokumelana nokugqwala futhi lwandise impilo yalo yesevisi. Ingaphinde inqunywe kalula ibe ubude obufiselekayo ngomshini wokugaya, okwenza kube lula ukusebenza kokwakha.
I-Rebar ihlukaniswe ngezindlela ezahlukene. Ngokwezinga lesiShayina (GB1499), i-rebar ihlukaniswe ngamagremu amathathu ngokusekelwe emandleni (iphuzu lokukhiqiza/amandla okudonsa): i-HRB335, enamandla angu-335 MPa, afanele izakhiwo ezijwayelekile zokwakha; i-HRB400, enamandla angu-400 MPa, afanele izakhiwo ezithwala imithwalo emikhulu; kanye ne-HRB500, enamandla angu-500 MPa, enikeza amandla aphezulu kakhulu okudonsa nokujika, afanele amaphrojekthi obunjiniyela akhethekile. I-Rebar ingahlukaniswa ngamagremu aqhutshwa ngokushisa kanye naqhutshwa ngokushisa ngokusekelwe endleleni yayo yokukhiqiza. I-rebar eqhutshwa ngokushisa ikhiqizwa ngamashidi ensimbi aqhutshwa njalo noma aqhutshwa ekuqaleni, enikeza izinzuzo ezifana namandla aphezulu, ukuguquguquka okuhle, kanye nokunamathela okuhle kukhonkolo. I-rebar eqhutshwa ngokushisa, ngakolunye uhlangothi, ikhiqizwa ngamakhoyili aqhutshwa ngokushisa, afakwe emanzini ukuze kususwe isikali, bese iqhutshwa ngokushisa. Iphinde ibonise amandla aphezulu, ukuguquguquka okuhle, kanye namandla aqinile okubopha kukhonkolo. Ngokusebenzisa, ingahlukaniswa ibe yi-rebar evamile yekhonkrithi eqinisiwe kanye ne-rebar ephathwa ngokushisa yekhonkrithi ecindezelwe ngaphambili.
I-Rebar isetshenziswa emikhakheni eyahlukene yokwakha nobunjiniyela. Ezakhiweni zokwakha, ivame ukusetshenziswa ukuqinisa nokuxhuma imishayo, amakholomu, ama-slab, nezinye izingxenye ezakhiweni zekhonkrithi eziqinisiwe, okuthuthukisa ukuzinza kwazo kanye nomthamo wokuthwala imithwalo. Ebunjiniyelani bezokwakha, isebenza njengento yokuqinisa nokuxhumanisa emabhulohweni, emihubheni, nasemigwaqweni emikhulu, ithuthukisa ukuzinza kwazo kanye nokumelana nokuzamazama komhlaba. Ebunjiniyelani bezitimela, isetshenziselwa ukuqinisa nokuxhumanisa imisele, ukuqinisekisa ukusebenza kahle. Ezimayini, ivame ukusetshenziswa njengento yokuqinisa nokusekela, isekela uphahla lwezimayini nezindonga. Isetshenziswa ngisho nasekuhlobiseni izakhiwo ukudala izinto zokuhlobisa njengezinsimbi zokuphatha, izindonga zokubiyela, kanye nezitebhisi, ihlanganisa ubuhle nokuqina.
Ukukhiqizwa kwe-rebar kudinga ukuqinisekisa ukuqhubeka phakathi kwenqubo ngayinye. Inqubo ivame ukuhlukaniswa ngokwenziwa kwensimbi, ukwenziwa kwensimbi okuyinhloko, kanye nokuqeda. Ubuchwepheshe obubalulekile bokukhiqiza buhlanganisa ukwelashwa kokushisa ngemva kokugoqa, ukukhiqizwa kwensimbi ecolekile, ukuqhekeka nokugoqa, kanye nokugoqa okungenazimbobo.
I-Rebar nayo inesikhundla esibalulekile emakethe. Isebenza njengesibonakaliso esibalulekile sentuthuko yemboni yokwakha, futhi ukuguquguquka kwentengo yayo kunomthelela oqondile ezinkampanini ezikhuphukayo neziphansi ochungechungeni lwemboni yensimbi. Kubakhiqizi bensimbi, ukunyuka kwamanani e-rebar kuhumushela enzuzweni ephezulu; ezinkampanini zokwakha eziphansi kanye nabathuthukisi bezindlu, ukuguquguquka kwentengo kuthinta ngqo izindleko zokwakha. Ngo-2023, amanani e-rebar ezweni lami ashintshashintsha phakathi kwama-yuan angu-3,600 nama-4,500/ton, afinyelela phezulu maphakathi noMashi. Kusukela ngasekupheleni kukaMashi kuya ngasekupheleni kukaMeyi, idatha yezindlu ayizange ifinyelele okulindelwe emakethe. Ngokuhambisana nokwehla okuvamile kwamanani amalahle asekhaya ngemuva kokuncipha kwenkinga yamandla aphesheya kwezilwandle, amanani e-rebar ehla ngokushesha. NgoNovemba, uchungechunge lwezinqubomgomo, okuhlanganisa nalezo ezihlobene nezibopho zikahulumeni ze-trillion-yuan kanye nezindlu, lwakhulisa kakhulu umuzwa wemakethe futhi lwaholela ekubuyeni kwamanani e-rebar. Okwamanje, isimo sezulu esihle emakethe yaseningizimu siholele emsebenzini othile ophuthumayo, kodwa isidingo sisonke sisaqinile. NgoDisemba, ngenxa yokwenyuka kwamanani ezinto zokusetshenziswa kanye nezinqubomgomo zomnotho, amanani e-rebar ashintshashintsha cishe ama-yuan angu-4,100/ton, afinyelela kuma-yuan angu-4,090.3/ton ngoDisemba 29.
I-Rebar, isisekelo esiqinile samaphrojekthi okwakha, ikhanya emikhakheni eyahlukahlukene ngenxa yezici zayo ezihlukile, ithonya intuthuko yemboni yokwakha. Izoqhubeka nokukhula ngentuthuko yezobuchwepheshe kanye nentuthuko yemboni.
Isikhathi sokuthunyelwe: Agasti-18-2025