I-Rebar: Uhlaka Lwensimbi Lwezakhiwo

Ekwakhiweni kwesimanjemanje, i-rebar iyinsika yangempela, idlala indima ebalulekile kuyo yonke into kusukela kumabhilidi aphakeme kuya emigwaqweni ejikajikayo. Izakhiwo zayo eziyingqayizivele ziyenza ibe yingxenye ebalulekile ekuqinisekiseni ukuphepha nokuqina kwesakhiwo.

I-Rebar, igama elivamile lamabha ensimbi anezimbambo ezishisayo, ithola igama layo endaweni enezimbambo. Ingxenye ephambanayo ngokuvamile iyindilinga, enezimbambo ezimbili zobude kanye nezimbambo ezinqamulayo ezihlukaniswe ngokulinganayo ngobude bayo. Izimbambo eziphambanayo zimise okwelucezu futhi azihlangani nezimbambo ze-longitudinal. Lokhu kuthungwa kwendawo okuyingqayizivele akugcini nje ngokuqinisa isibopho phakathi kwe-rebar nokhonkolo kodwa futhi kukhulisa ngokuphawulekayo amandla ayo aqinile kanye nokuzinza okuphelele ezakhiweni zokwakha. I-Rebar ngokuvamile yenziwa ngensimbi yesakhiwo sekhabhoni noma insimbi yesakhiwo esinengxubevange ephansi futhi iza kububanzi obubanzi bobubanzi, ukusuka ku-6 mm ukuya ku-50 mm, ukuze ivumelane nezidingo ezihlukahlukene zokwakha.

I-Rebar inezinto zomshini ezisezingeni eliphezulu, isebenzisa ngokugcwele izakhiwo zensimbi ngesikhathi sokushuba, okuyenza ibe phezulu kune-rebar evamile. Ingaphezulu layo liphathwa ukwenza ungqimba olujiyile lwe-oxide, olunikeza ukumelana nokugqwala futhi lwandise impilo yalo yesevisi. Ingase futhi isikwe kalula ubude obufunayo ngokusebenzisa machining, lula imisebenzi yokwakha.

I-Rebar ihlukaniswe ngezindlela ezahlukahlukene. Ngokwezinga lesiShayina (i-GB1499), i-rebar ihlukaniswe ngamamaki amathathu ngokusekelwe emandleni (iphuzu lesivuno/amandla aqinile): I-HRB335, enamandla angu-335 MPa, afanele izakhiwo zokwakha ezijwayelekile; I-HRB400, enamandla angu-400 MPa, ifanele izakhiwo ezithwala imithwalo emikhulu; kanye ne-HRB500, enamandla angama-MPa angu-500, enikeza amandla aphakeme kakhulu okunyakazisa kanye nokuqina, afanele amaphrojekthi akhethekile wobunjiniyela. I-Rebar ingahlukaniswa ngamamaki agoqelwe ashisayo nagoqelwe ngokubanda ngokusekelwe endleleni yawo yokukhiqiza. I-rebar egoqelwe ngokushisayo ikhiqizwa kusukela kumashidi ensimbi aqhubekayo noma agingqiwe ekuqaleni, anikeza izinzuzo ezinjengamandla aphezulu, i-ductility enhle, nokunamathela okuhle kakhulu kukhonkolo. I-cold-rolled rebar, ngakolunye uhlangothi, ikhiqizwa kusukela kumakhoyili ashisayo, afakwe emanzini ukuze asuse isikali, bese ebanda. Iphinde ibonise amandla aphezulu, i-ductility enhle, namandla esibopho esiqinile ngokhonkolo. Ngokusebenzisa, ingahlukaniswa ibe yi-rebar evamile yokhonkolo oqinisiwe kanye ne-rebar ephathwa ngokushisa yokhonkolo ogcizelelwe.

I-Rebar isetshenziswa emikhakheni ehlukahlukene yokwakha nobunjiniyela. Ezakhiweni zokwakha, kuvame ukusetshenziselwa ukuqinisa nokuxhuma imishayo, amakholomu, ama-slabs, nezinye izingxenye ezakhiweni zekhonkrithi eziqinisiwe, okuthuthukisa ukuzinza kwazo namandla okuthwala umthwalo. Kwezobunjiniyela bomphakathi, isebenza njengokuqinisa nokuxhumanisa kumabhuloho, imigudu, kanye nemigwaqo enguthelawayeka, ithuthukisa ukuzinza kanye nokumelana nokuzamazama komhlaba. Ebunjiniyela besitimela, isetshenziselwa ukuvikela nokuxhuma ama-rail, ukuqinisekisa ukusebenza kahle. Emayini, kuvame ukusetshenziswa njengento yokuqinisa nokusekela, ukusekela uphahla lwezimayini nezindonga. Ize isetshenziswe ekuhlobiseni kwezakhiwo ukudala izinto zokuhlobisa ezifana nezandla, ama-railing, nezitebhisi, okuhlanganisa ubuhle nokuqina.

Ukukhiqizwa kwe-rebar kudinga ukuqinisekisa ukuqhubeka phakathi kwenqubo ngayinye. Inqubo ivame ukuhlukaniswa ekwenzeni insimbi, ukwenziwa kwensimbi okuyinhloko, nokuqeda. Ubuchwepheshe bokukhiqiza obubalulekile buhlanganisa ukwelashwa kokushisa kwangemva kokugingqika, ukukhiqizwa kwensimbi ecolekile, ukusika nokugingqika, nokugingqa okungenambobo.

I-Rebar iphinde ibe nesikhundla esibalulekile emakethe. Isebenza njengenkomba esemqoka yentuthuko yemboni yezokwakha, futhi ukwehla kwezinga layo kunomthelela oqondile ezinkampanini ezikhuphuka nomfula ezingaphansi kochungechunge lwemboni yensimbi. Kubakhiqizi bensimbi, ukukhuphuka kwentengo ye-rebar kuhumushela kumamajini enzuzo ephezulu; ezinkampanini zokwakha ezansi nomfula kanye nabathuthukisi bezindlu, ukuguquguquka kwentengo kunomthelela ngqo ezindlekweni zokwakha. Ngo-2023, amanani e-rebar yezwe lami aguquguquka phakathi kuka-3,600 no-4,500 yuan/ton, akhuphuka kakhulu maphakathi no-March. Kusukela ngasekupheleni kukaMashi kuze kube sekupheleni kukaMeyi, idatha yezindawo ezithengiswayo ayizange ifinyelele kulokho okwakulindelwe yimakethe. Ngokuhambisana nokwehla okujwayelekile kwamanani amalahle asekhaya kulandela ukudamba kwenkinga yamandla aphesheya kwezilwandle, amanani entengo ye-rebar ehle ngokushesha. NgoNovemba, uchungechunge lwezinqubomgomo, okuhlanganisa nalezo ezihlobene namabhondi kahulumeni wama-trillion-yuan kanye nezindawo ezithengiswayo, lwakhulisa kakhulu umuzwa wemakethe futhi lwaholela ekubuyeni kwentengo ye-rebar. Ngaleso sikhathi, isimo sezulu esivumayo emakethe eseningizimu siholele emsebenzini othile osheshayo, kodwa isidingo sisonke sihlala siqinile. NgoZibandlela, ngenxa yokukhuphuka kwamanani entengo yezinto zokusetshenziswa kanye nezinqubomgomo zezomnotho omkhulu, amanani entengo ye-rebar aguquguquka cishe ku-4,100 yuan/ton, afinyelela ku-4,090.3 yuan/ton ngo-December 29.

I-Rebar, isisekelo esiqinile samaphrojekthi wokwakha, ikhanya emikhakheni ehlukahlukene ngenxa yezimpawu zayo ezihlukile, ezinomthelela ekuthuthukisweni kwemboni yezokwakha. Izoqhubeka nokuthuthuka ngentuthuko yezobuchwepheshe kanye nokuthuthukiswa kwezimboni.