A cikin gine-gine na zamani, rebar babban jigo ne, yana taka muhimmiyar rawa a cikin komai tun daga manyan gine-ginen sama zuwa manyan tituna. Abubuwan da ke cikin jiki na musamman sun sa ya zama mahimmin sashi don tabbatar da aminci da dorewa.
Rebar, sunan gama-gari na sandunan ƙarfe mai zafi-birgima, ya samo sunansa daga saman ribbed. Bangaren giciye yawanci madauwari ne, tare da haƙarƙari biyu masu tsayi da madaidaicin haƙarƙari masu tsaka-tsaki tare da tsawonsa. Haƙarƙari masu jujjuyawa suna da sifar jinjirin wata kuma ba sa yin cuɗanya da haƙarƙari masu tsayi. Wannan nau'in na musamman na saman ba wai kawai yana ƙarfafa haɗin gwiwa tsakanin rebar da kankare ba amma kuma yana haɓaka ƙarfin ƙarfinsa da cikakken kwanciyar hankali a cikin gine-gine. Rebar yawanci ana yin shi ne daga ƙarfe na tsarin carbon ko ƙaramin tsari na ƙarfe kuma yana zuwa cikin kewayon diamita, daga 6 mm zuwa 50 mm, don dacewa da buƙatun gini daban-daban.
Rebar yana da ingantattun kaddarorin inji, yana yin cikakken amfani da kayan aikin ƙarfe yayin tashin hankali, yana mai da shi sama da na yau da kullun. Ana kula da samansa don samar da wani kauri mai kauri, wanda ke ba da juriya na lalata kuma yana tsawaita rayuwar sabis. Hakanan ana iya yanke shi cikin sauƙi zuwa tsayin da ake so ta hanyar injina, sauƙaƙe ayyukan gini.
Ana rarraba Rebar ta hanyoyi daban-daban. Bisa ga ma'auni na kasar Sin (GB1499), rebar ya kasu kashi uku bisa ga ƙarfi (ƙarfin yawan amfanin ƙasa): HRB335, tare da ƙarfin 335 MPa, dace da tsarin gine-gine na gaba ɗaya; HRB400, tare da ƙarfin 400 MPa, dace da tsarin da ke ɗauke da kaya mafi girma; da HRB500, tare da ƙarfin 500 MPa, suna ba da ƙarfin ƙarfi na musamman da ƙarfin torsional, wanda ya dace da ayyukan injiniya na musamman. Ana iya raba Rebar zuwa maki mai zafi da sanyi bisa tsarin samar da shi. Rebar mai zafi ana samar da shi daga ci gaba da simintin simintin gyare-gyare ko birgima da farko, yana ba da fa'idodi kamar ƙarfi mai ƙarfi, ingantaccen ductility, da kyakkyawan mannewa zuwa kankare. Rebar mai sanyi, a daya bangaren kuma, ana samar da ita ne daga coils masu zafi, a tsinke a cire ma'auni, sannan a yi sanyi. Hakanan yana nuna ƙarfi mai ƙarfi, kyakkyawan ductility, da ƙarfin haɗin gwiwa tare da kankare. Ta hanyar aikace-aikacen, ana iya raba shi zuwa madaidaicin madaidaicin don ƙarfafa simintin da aka yi masa magani da zafi don simintin da aka rigaya.
Ana amfani da Rebar a fannonin gine-gine da aikin injiniya daban-daban. A cikin gine-ginen gine-gine, ana amfani da shi don ƙarfafawa da haɗa katako, ginshiƙai, ginshiƙai, da sauran abubuwan da aka ƙarfafa a cikin sifofin simintin gyare-gyare, haɓaka kwanciyar hankali da ƙarfin ɗaukar kaya. A cikin aikin injiniya na farar hula, yana aiki azaman ƙarfafawa da kayan haɗin gwiwa a cikin gadoji, tunnels, da manyan hanyoyi, inganta kwanciyar hankali da juriyar girgizar ƙasa. A cikin aikin injiniyan jirgin ƙasa, ana amfani da shi don tsaro da haɗa layin dogo, yana tabbatar da aiki mai sauƙi. A cikin hakar ma'adinai, ana amfani dashi sau da yawa azaman ƙarfafawa da kayan tallafi, tallafawa rufin ma'adinai da ganuwar. Har ma ana amfani da ita a cikin kayan ado na gine-gine don ƙirƙirar abubuwa na ado irin su ginshiƙan hannu, dogo, da matakan hawa, tare da haɗa kayan ado tare da dorewa.
Samar da Rebar yana buƙatar tabbatar da ci gaba tsakanin kowane tsari. Ana rarraba tsarin yawanci zuwa ƙera ƙarfe, babban ƙarfe, da ƙarewa. Mabuɗin fasahar samarwa sun haɗa da maganin zafi bayan mirgina, samar da ƙarfe mai kyau, tsagawa da mirgina, da mirgina mara rami.
Rebar kuma yana da matsayi mai mahimmanci a kasuwa. Yana aiki a matsayin babban mahimmin ci gaban masana'antar gine-gine, kuma sauyin farashinsa yana da tasiri kai tsaye ga kamfanoni masu tasowa da na kasa a cikin sarkar masana'antar karafa. Ga masu kera karafa, hauhawar farashin rebar yana fassara zuwa mafi girman ribar riba; ga kamfanonin gine-gine na ƙasa da masu haɓaka gidaje, sauye-sauyen farashi yana tasiri kai tsaye farashin gini. A shekarar 2023, farashin sake sayar da kaya na kasarmu ya tashi tsakanin 3,600 zuwa 4,500 yuan/ton, wanda ya kai kololuwa a tsakiyar watan Maris. Daga ƙarshen Maris zuwa ƙarshen Mayu, bayanan gidaje sun faɗi ƙasa da tsammanin kasuwa. Tare da raguwar farashin kwal na cikin gida gabaɗaya bayan sauƙaƙawar matsalar makamashi a ketare, farashin sake fasinja ya faɗi cikin sauri. A cikin watan Nuwamba, wasu tsare-tsare da suka hada da wadanda suka shafi lamuni na gwamnati da kadarori na yuan tiriliyan, sun kara habaka kasuwanni sosai tare da haifar da koma baya a farashin koma baya. A halin yanzu, yanayi mai kyau a kasuwar kudanci ya haifar da wasu ayyukan gaggawa, amma gabaɗayan buƙatun na da ƙarfi. A watan Disamba, sakamakon hauhawar farashin albarkatun kasa da manufofin tattalin arziki, farashin rebar ya tashi kusan yuan 4,100/ton, ya kai yuan 4,090.3/ton a ranar 29 ga Disamba.
Rebar, tushe mai ƙarfi don ayyukan gine-gine, yana haskakawa a fagage daban-daban godiya ga halayensa na musamman, yana tasiri ci gaban masana'antar gini. Za ta ci gaba da bunkasa tare da ci gaban fasaha da ci gaban masana'antu.
Lokacin aikawa: Agusta-18-2025