Gukata ibyuma hamwe na karbide ya sima

1. Gukata ibikoresho

.Umuringa usukuye ufite amazi meza kuri karbide zose za sima, ariko ingaruka nziza irashobora kuboneka mugukata mukirere kigabanya hydrogene.Muri icyo gihe, kubera ubushyuhe bwinshi bwo gutwika, imihangayiko mu gihimba ni nini, biganisha ku kwiyongera kwikunda.Imbaraga zo gukata zifatanije n'umuringa usukuye ni nka 150MPa, kandi plastike ihuriweho nayo ni ndende, ariko ntibikwiriye gukora ubushyuhe bwo hejuru.

Icyuma cyuzuza umuringa nicyuma gikoreshwa cyane mukuzuza ibyuma hamwe na karbide ya sima.Kugirango tunonosore ubukonje bwumugurisha nimbaraga zihuriweho, Mn, Ni, Fe nibindi bintu bivangavanze akenshi byongerwa kubagurisha.Kurugero, w (MN) 4% yongewe kuri b-cu58znmn kugirango imbaraga zogosha za sima ya karbide isobekeranye igera kuri 300 ~ 320MPa mubushyuhe bwicyumba;Irashobora gukomeza 220 ~ 240mpa kuri 320 ℃.Ongeramo umubare muto wa CO hashingiwe kuri b-cu58znmn irashobora gutuma imbaraga zogosha zingingo zifatanije zigera kuri 350Mpa, kandi zikagira ingaruka zikomeye gukomera nimbaraga zumunaniro, bikazamura ubuzima bwa serivisi bwibikoresho byo gutema nibikoresho byo gucukura amabuye.

Umuyoboro wo hasi wo gushonga wa feza umuringa wuzuza ibyuma hamwe nubushyuhe buke bwumuriro bwingingo zifatanije ningirakamaro kugirango ugabanye imyuka ya karbide ya sima mugihe cyo gutwika.Kugirango tunonosore ubukonje bwuwagurishije no kunoza imbaraga nubushyuhe bwakazi bwibihuriweho, Mn, Ni nibindi bintu bivangavanze akenshi byongerwa kubagurisha.Kurugero, b-ag50cuzncdni ugurisha afite ubushuhe buhebuje kuri karbide ya sima, kandi ifatanyirijwe hamwe ifite ibintu byiza byuzuye.

Usibye ubwoko butatu bwavuzwe haruguru bwuzuza ibyuma, Mn ishingiye na Ni ishingiye kuri brazing yuzuza ibyuma, nka b-mn50nicucrco na b-ni75crsib, birashobora gutoranywa kuri karbide ya sima ikora hejuru ya 500 ℃ kandi bisaba imbaraga zihuriweho.Kumashanyarazi yicyuma cyihuta, icyuma kidasanzwe cyuzuza icyuma hamwe nubushyuhe bwa brazing bihuye nubushyuhe bwo kuzimya bigomba guhitamo.Iki cyuma cyuzuza kigabanyijemo ibyiciro bibiri: kimwe nicyuma cyuzuza ferromanganese, kigizwe ahanini na ferromanganese na borax.Imbaraga zo gukata zifatanije zisanzwe ni 100MPa, ariko ingingo ikunda gucika;Ubundi bwoko bwumuringa udasanzwe urimo Ni, Fe, Mn na Si ntabwo byoroshye kubyara uduce twinshi, kandi imbaraga zogosha zirashobora kwiyongera kugeza 300mpa.

.Iyo gukata ibikoresho byuma na karbide ya sima, flux yamashanyarazi ikoreshwa cyane cyane borax na aside ya boric, hanyuma floride zimwe (KF, NaF, CaF2, nibindi) zongerwamo.Fb301, fb302 na fb105 fluxes zikoreshwa mugurisha umuringa wa zinc, naho fb101 ~ fb104 zikoreshwa mugurisha umuringa wa feza.Borax flux ikoreshwa cyane cyane mugihe icyuma kidasanzwe cyo kuzuza icyuma gikoreshwa mugukata ibyuma byihuta.

Kugirango wirinde okiside yicyuma cyibikoresho mugihe cyo gushyushya no kwirinda isuku nyuma yo gutwika, hashobora gukoreshwa gaze ikingira gaze.Gazi ikingira irashobora kuba inert cyangwa kugabanya gaze, kandi ikime cya gaze kigomba kuba munsi ya -40 car Carbide ya sima irashobora gutwikwa kurinda hydrogene, naho ikime cya hydrogène gisabwa kigomba kuba munsi ya -59 ℃.

2. Gukoresha tekinoroji

Igikoresho cyicyuma kigomba gusukurwa mbere yo gukonjesha, kandi hejuru yimashini ntigomba kuba yoroshye cyane kugirango byoroherezwe no gukwirakwiza ibikoresho no gutemba.Ubuso bwa karbide ya sima igomba kuba umusenyi uturika mbere yo gutwikwa, cyangwa ugasigara hamwe na karubide ya silicon cyangwa uruziga rusya rwa diyama kugirango ukureho karubone ikabije hejuru, kugirango uhindurwe nicyuma cyuzuza mugihe cyo gutwika.Carbide ya sima irimo karbide ya titanium iragoye.Umuringa wa oxyde cyangwa nikel oxyde ushyirwa hejuru yacyo muburyo bushya kandi ugatekwa mukirere kigabanya kugirango umuringa cyangwa nikel uhinduke hejuru, kugirango wongere ububobere bwumugurisha ukomeye.

Gukata ibyuma bya karubone bigomba gukorwa mbere cyangwa mugihe kimwe cyo kuzimya.Niba brazing ikozwe mbere yuburyo bwo kuzimya, ubushyuhe bwa solidus bwicyuma cyuzuza bwakoreshejwe bugomba kuba hejuru yubushyuhe bwo kuzimya, kugirango gusudira bigifite imbaraga zihagije iyo bishyushye mubushyuhe bwo kuzimya nta kunanirwa.Iyo gusya no kuzimya byahujwe, icyuma cyuzuza hamwe nubushyuhe bwa solidus hafi yubushyuhe buzatoranywa.

Alloy ibikoresho ibyuma bifite intera nini yibigize.Ibyuma bikwiye byuzuza ibyuma, uburyo bwo gutunganya ubushyuhe nubuhanga bwo guhuza brazing hamwe nuburyo bwo gutunganya ubushyuhe bigomba kugenwa ukurikije ubwoko bwibyuma byihariye, kugirango tubone imikorere myiza ihuriweho.

Ubushyuhe bwo kuzimya ibyuma byihuta cyane muri rusange burenze ubushyuhe bwo gushonga bwumuringa wa feza nuwagurishije umuringa wa zinc, bityo rero birakenewe kuzimya mbere yo gucana no gucana mugihe cyangwa nyuma yubushyuhe bwa kabiri.Niba kuzimya bisabwa nyuma yo gushakisha, gusa ibyuma byavuzwe haruguru byihariye byuzuza ibyuma bishobora gukoreshwa mugukata.Iyo ushakisha ibikoresho byihuta byo gukata ibyuma, birakwiye gukoresha itanura rya kokiya.Iyo icyuma cyuzuza icyuma gishongeshejwe, fata igikoresho cyo gukata hanyuma uhite ubikandamiza, usohokemo ibyuma byuzuza birenze urugero, hanyuma ukore kuzimya amavuta, hanyuma ubishyire kuri 550 ~ 570 ℃.

Mugihe cyo gutwika icyuma cya karbide cima hamwe nigikoresho cyicyuma, uburyo bwo kongera icyuho cya brazing no gukoresha gasketi yindishyi za plastike mugace ka brazing bigomba gukurikizwa, kandi gukonjesha buhoro bigomba gukorwa nyuma yo gusudira kugirango bigabanye guhagarika umutima, birinde gucika kandi kongerera ubuzima bwa serivisi ya sima ya karbide igikoresho.

Nyuma yo gusudira fibre, ibisigara bya flux kuri weldment byogejwe namazi ashyushye cyangwa imvange rusange yo kuvanaho slag, hanyuma bigashyirwa hamwe nigisubizo kiboneye kugirango ukureho firime ya okiside kumutwe wibikoresho fatizo.Icyakora, witondere kudakoresha aside nitricike kugirango wirinde kwangirika kwicyuma.