Inkono y'icyuma niyo nkono gakondo yo guteka izwi cyane mubushinwa kubera imbaraga nyinshi, kuzuza ibyuma, ubukungu nibikorwa bifatika.Nyamara, inkono zicyuma zometse kumasoko zose ni ibyuma cyangwa ibyuma bisubirwamo.Ibice byingenzi bigize ibyuma: karubone (C) = 2.0 kugeza 4.5%, silikoni (Si) = 1.0 kugeza 3.0%.Nubwo ifite ibyiza byigiciro gito, ubushobozi bwiza bwo gukata no kugabanya imikorere, hamwe nuburemere bwo hejuru, bikozwe mubyuma byingurube Cyangwa bikozwe mubyuma bitunganijwe neza.Usibye silikoni nyinshi hamwe na karubone, irimo fosifore, sulfure, gurş, cadmium, arsenic nibindi bintu byangiza umubiri wumuntu.Muburyo bwo guteka rero, nubwo inkono yicyuma ishobora kuzuza ibyuma, biroroshye kugwa mubintu byangiza mugihe wongeyeho ibyuma, cyane cyane ibyuma biremereye nka gurş, kadmium na arsenic bizinjira mumubiri wumuntu hamwe nibiryo kandi birundanya mugihe.Bizatera ingaruka zikomeye kumubiri wumuntu.Kurugero, Igipimo cy’igihugu cya Repubulika y’Ubushinwa “Igipimo cy’isuku ku bikoresho byo mu bikoresho byo mu bwoko bwa Stevenless” GB9684-88 cyashyizeho amategeko agenga ibipimo ngenderwaho ku mubiri n’imiti byerekana ibyuma bya austenitike bidafite ibyuma na martensitike idafite ibyuma.Icyakora, kubera kutagira ibipimo ngenderwaho byigihugu cyangwa inganda kubipimo byerekana isuku yibikoresho bitetse ibyuma, hamwe nuburyo bugaragara bwo gukora, ababikora bose ntibagenzuye ibipimo by’isuku.Nyuma yubugenzuzi butunguranye, isuku yibikoresho bitetse ibyuma, cyane cyane ibyuma bikozwe mubyuma, kumasoko Benshi muribo ntibujuje ibipimo byumubiri nubumashini byibyuma.
Hariho kandi ibyombo bimwe na bimwe byashyizweho kashe ku byapa ku isoko, nubwo ibikubiye mu byuma biremereye bishobora kugarukira ku guhitamo ibikoresho by’ibyuma, kugira ngo bidatera umuriro wa tifoyide ku mubiri w’umuntu.Nyamara, ibyuka bya karubone biri mu cyuma muri rusange ntibiri munsi ya 1.0%, bikavamo ubukana buke bwo hejuru hamwe n'ingese byoroshye.Gusaba ipatanti nimero 90224166.4 irasaba gutwikira enamel ikomeye cyane hejuru yinyuma yicyuma gisanzwe;nomero yo gusaba ipatanti nimero 87100220 na 89200759.1 koresha uburyo bwo gutwikira aluminiyumu hejuru yinyuma yicyuma kugirango ukemure ikibazo cy ingese zo hejuru, ariko ubu buryo butandukanya icyuma Ibigize ibintu bihura neza nibiryo, nibyiza byo gushonga ibyuma mu isafuriya y'icyuma irazimira.
Byongeye kandi, ibikoresho byo guteka byuma bikozwe mugushiraho kashe no gukora isahani yicyuma bifite imiterere yibikoresho, bityo ibiranga ingufu zayo no kubika ubushyuhe bikaba bibi kuruta ibyuma bikozwe mucyuma;kandi kubera ko nta micropore ihari hejuru, kwinjiza amavuta yo hejuru hamwe nibikorwa byo kubika nabyo biruta ibyo guteka ibyuma.Ibikoresho bidafite ibyuma.Hanyuma, ibikoresho byo guteka bikozwe mugushiraho kashe no gukora isahani yicyuma ntibishobora kugera kubikorwa byo guteka ibyuma bikozwe mubyuma kuko biragoye kugera kumiterere yuburinganire butaringaniye hamwe nubutaka bwimbitse kandi bworoshye mubice byacyo.
Igihe cyo kohereza: Ukwakira-22-2020