Mu iyubakwa rya kijyambere, rebar nukuri kwingenzi, igira uruhare rukomeye muri byose kuva hejuru yuburebure bwikirere kugeza kumihanda nyabagendwa. Imiterere yihariye yumubiri ituma iba ikintu cyingenzi mukurinda umutekano wubaka kandi biramba.
Rebar, izina risanzwe ryibiti bishyushye bizengurutswe nibyuma, biva izina ryabyo hejuru yububavu. Igice cyacyo gisanzwe ni umuzenguruko, ufite imbavu ebyiri ndende kandi zingana hagati yimbavu zinyuranye. Urubavu ruhinduranya rumeze nk'ukwezi kandi ntiruhuza n'imbavu ndende. Iyi miterere idasanzwe ntabwo ishimangira gusa isano iri hagati yinyuma na beto ahubwo inazamura cyane imbaraga zayo zikomeye hamwe nuburinganire rusange mubikorwa byubaka. Ubusanzwe rebar ikozwe mubyuma byubatswe byubatswe cyangwa ibyuma byubatswe buke kandi biza muburyo butandukanye bwa diametre, kuva kuri mm 6 kugeza kuri mm 50, kugirango bihuze ibyangombwa bitandukanye byubaka.
Rebar ifite imiterere yubukorikori isumba iyindi, ikoresha byimazeyo ibyuma bya mashini mugihe cyimpagarara, bigatuma iruta rebar isanzwe. Ubuso bwacyo buvurwa kugirango habeho igipimo cyinshi cya oxyde, gitanga ruswa kandi ikongerera igihe cyo gukora. Irashobora kandi gucibwa byoroshye kuburebure bwifuzwa hakoreshejwe imashini, koroshya ibikorwa byubwubatsi.
Rebar yashyizwe muburyo butandukanye. Ukurikije igipimo cy’Ubushinwa (GB1499), rebar igabanijwemo ibyiciro bitatu bishingiye ku mbaraga (point point / tensile strength): HRB335, ifite imbaraga za MPa 335, ibereye inyubako rusange; HRB400, ifite imbaraga za 400 MPa, ibereye inyubako zifite imitwaro myinshi; na HRB500, hamwe nimbaraga za MPa 500, zitanga imbaraga zidasanzwe kandi zidasanzwe, zikwiranye nimishinga yihariye yubuhanga. Rebar irashobora kugabanywa mubice bishyushye kandi bikonje bikurikije uburyo bwo gukora. Icyuma gishyushye gikozwe muburyo bukomeza guterwa cyangwa kubanza gutondekanya ibyuma, bitanga ibyiza nkimbaraga nyinshi, guhindagurika kwiza, hamwe no gufatira kuri beto. Ku rundi ruhande, icyuma gikonjesha gikonje, kiva mu bishishwa bishyushye, bigatoragurwa kugirango bikureho umunzani, hanyuma bikonje. Irerekana kandi imbaraga nyinshi, guhindagurika kwiza, nimbaraga zikomeye zifatika hamwe na beto. Mugukoresha, irashobora kugabanywa muburyo busanzwe bwa beto yubakishijwe ibyuma hamwe nubushyuhe bukoreshwa nubushyuhe bwa beto izwi.
Rebar ikoreshwa mubwubatsi butandukanye nubwubatsi. Mu nyubako zubaka, zisanzwe zikoreshwa mugushimangira no guhuza ibiti, inkingi, ibisate, nibindi bice mubikorwa byubakishijwe ibyuma, byongera imbaraga zabo hamwe nubushobozi bwo kwikorera imitwaro. Mu bwubatsi bwa gisivili, ikora nk'ibikoresho byo gushimangira no guhuza ibiraro, umuhanda, n'imihanda minini, bigateza imbere umutekano muke no kurwanya imitingito. Mu bwubatsi bwa gari ya moshi, ikoreshwa mu kurinda no guhuza gari ya moshi, ikora neza. Mu bucukuzi bw'amabuye y'agaciro, bukoreshwa kenshi nk'ibikoresho byo gushimangira no gushyigikira, gushyigikira ibisenge by'amabuye n'inkuta. Ndetse ikoreshwa no mubishushanyo mbonera kugirango ikore ibintu bishushanya nk'intoki, gariyamoshi, n'ingazi, ihuza ubwiza hamwe nigihe kirekire.
Umusaruro winyuma bisaba kwemeza gukomeza hagati ya buri nzira. Inzira isanzwe igabanijwemo gukora ibyuma, gukora ibyuma nyamukuru, no kurangiza. Tekinoroji yingenzi yibyara umusaruro harimo kuvura ubushyuhe nyuma yo kuzunguruka, gukora ibyuma byiza cyane, gutemagura no kuzunguruka, no kuzunguruka.
Rebar nayo ifite umwanya wingenzi ku isoko. Ikora nk'ikimenyetso cy'ingenzi mu iterambere ry’inganda zubaka, kandi ihindagurika ry’ibiciro ryayo rigira ingaruka zitaziguye ku masosiyete yo hejuru ndetse no mu nsi yo hasi mu ruganda rukora ibyuma. Ku bakora ibyuma, izamuka ryibiciro bya rebar bisobanura inyungu nyinshi; kubigo byubwubatsi byimbere hamwe nabateza imbere imitungo itimukanwa, ihindagurika ryibiciro bigira ingaruka kumafaranga yo kubaka. Mu 2023, ibiciro by’inyuma by’igihugu cyanjye byahindutse hagati ya 3.600 na 4.500 Yuan / toni, bigera hagati muri Werurwe. Kuva mu mpera za Werurwe kugeza mu mpera za Gicurasi, amakuru y’imitungo itimukanwa ntiyageze ku isoko. Hamwe n’igabanuka rusange ry’ibiciro by’amakara mu gihugu nyuma yo koroshya ikibazo cy’ingufu zo mu mahanga, ibiciro by’inyuma byagabanutse vuba. Mu Gushyingo, politiki zitandukanye, zirimo izerekeranye na tiriyari-y’amadorari y’inguzanyo za leta n’umutungo utimukanwa, byazamuye imyumvire ku isoko kandi bituma izamuka ry’ibiciro by’inyuma. Hagati aho, ikirere cyiza ku isoko ryamajyepfo cyatumye akazi kihuta, ariko muri rusange icyifuzo gikomeje gukomera. Mu Kuboza, bitewe n’izamuka ry’ibiciro fatizo na politiki y’ubukungu, ibiciro by’inyuma byahindutse hafi 4.100 yu / toni, bigera kuri 4.090.3 yu / toni ku ya 29 Ukuboza.
Rebar, umusingi ukomeye wimishinga yubwubatsi, urabagirana mubice bitandukanye bitewe nibiranga bidasanzwe, bigira uruhare mubikorwa byiterambere ryinganda zubaka. Bizakomeza gutera imbere hamwe niterambere ryikoranabuhanga no guteza imbere inganda.
Igihe cyo kohereza: Kanama-18-2025