Gukata ibyuma byangiritse

1. Umucuruzi

Ubwoko bwose bwabagurisha bafite ubushyuhe buri munsi ya 3000 ℃ burashobora gukoreshwa kuri W brazing, naho umuringa cyangwa ifeza ushingiye kubicuruzwa bishobora gukoreshwa mubice bifite ubushyuhe buri munsi ya 400 ℃;Zahabu ishingiye, ishingiye kuri manganese, ishingiye kuri manganese, palladium cyangwa drill ishingiye ku kuzuza ibyuma bisanzwe bikoreshwa mubice bikoreshwa hagati ya 400 ℃ na 900 ℃;Kubice bikoreshwa hejuru ya 1000 ℃, ibyuma byera nka Nb, Ta, Ni, Pt, PD na Mo bikoreshwa cyane.Ubushyuhe bwo gukora bwibice bisizwe hamwe na platine base yagurishije bigeze kuri 2150 ℃.Niba 1080 treatment ikwirakwizwa ryakozwe nyuma yo gushakisha, ubushyuhe ntarengwa bwo gukora burashobora kugera kuri 3038 ℃.

Benshi mubagurisha bikoreshwa mugukata w barashobora gukoreshwa mugukata Mo, naho abacuruzi b'umuringa cyangwa ifeza barashobora gukoreshwa kubice bya Mo bikora munsi ya 400 ℃;Kubikoresho bya elegitoronike nibice bitubatswe bikora kuri 400 ~ 650 ℃, Cu Ag, Au Ni, PD Ni cyangwa Cu Ni abagurisha barashobora gukoreshwa;Titanium ishingiye cyangwa ibindi byuma byuzuza ibyuma bifite ingingo zo gushonga birashobora gukoreshwa mubice bikora mubushyuhe bwinshi.Twabibutsa ko manganese ishingiye, cobalt ishingiye kuri nikel yuzuza ibyuma byuzuzanya muri rusange ntibisabwa kwirinda ko habaho ibice bivangavanze biva mu ngingo zifatika.

Iyo ibice bya TA cyangwa Nb bikoreshejwe munsi ya 1000 ℃, bishingiye ku muringa, bishingiye kuri manganese, bishingiye kuri cobalt, bishingiye kuri titanium, nikel ishingiye, zahabu ishingiye kuri palladium inshinge zishobora gutorwa, harimo Cu Au, Au Ni, PD Ni na Pt Au_ Ni na Abagurisha Cu Sn bafite ubudahangarwa bwiza kuri TA na Nb, uburyo bwiza bwo gushakisha hamwe nimbaraga nyinshi zifatanije.Nkuko ibyuma bishingiye kuri feza byuzura bikunda gutuma ibyuma bisya byacika, bigomba kwirindwa bishoboka.Kubice bikoreshwa hagati ya 1000 ℃ na 1300 ℃, ibyuma bisukuye Ti, V, Zr cyangwa ibivanze bishingiye kuri ibyo byuma bigize ibintu bikomeye kandi bitagira ingano hamwe na byo bizatoranywa nkibyuma byuzuza.Iyo ubushyuhe bwa serivisi buri hejuru, icyuma cyuzuza kirimo HF kirashobora gutoranywa.

W. Reba imbonerahamwe ya 13 yo gushakisha ibyuma byuzuza Mo, Ta na Nb ku bushyuhe bwinshi.

Imbonerahamwe 13 yuzuza ibyuma byuzuza ubushyuhe bwo hejuru hejuru yicyuma

2. Gukoresha tekinoroji

Mbere yo gushakisha, birasabwa gukuramo witonze okiside hejuru yicyuma cyangiritse.Gusya kwa mashini, guturika umucanga, gusukura ultrasonic cyangwa gusukura imiti birashobora gukoreshwa.Brazing igomba gukorwa ako kanya nyuma yisuku.

Bitewe n'uburemere bwa W, ibice bigomba gukoreshwa neza mugikorwa cyo guteranya ibice kugirango birinde gucika.Kugirango wirinde gushiraho karbide ya tungsten yoroheje, hagomba kwirindwa guhura hagati ya W na grafite.Kwiyandikisha kubera gutunganya mbere yo gusudira cyangwa gusudira bigomba kuvaho mbere yo gusudira.W biroroshye cyane okiside mugihe ubushyuhe buzamutse.Impamyabumenyi ya vacuum izaba ndende bihagije mugihe cyo gushakisha.Iyo brazing ikozwe mubushuhe bwa 1000 ~ 1400 ℃, impamyabumenyi ya vacuum ntishobora kuba munsi ya 8 × 10-3Pa。 Kugirango tunonosore ubushyuhe bwo guhinduranya hamwe nubushyuhe bwa serivise yibihuriweho, inzira yo gushakisha irashobora guhuzwa hamwe kuvura gukwirakwiza nyuma yo gusudira.Kurugero, b-ni68cr20si10fel ugurisha akoreshwa mugukata W kuri 1180 ℃.Nyuma yubuvuzi butatu bwo gukwirakwiza 1070 ℃ / 4h, 1200 ℃ /3.5h na 1300 ℃ / 2h nyuma yo gusudira, ubushyuhe bwa serivisi bwururondogoro rushobora kugera kuri 2200 ℃.

Coefficient ntoya yo kwaguka yubushyuhe igomba kwitabwaho mugihe cyo guteranya icyuma cya Mo, kandi icyuho kigomba kuba kiri hagati ya 0.05 ~ 0.13MM.Niba igikoresho gikoreshwa, hitamo ibikoresho bifite coefficient ntoya yo kwagura ubushyuhe.Mo recrystallisation ibaho mugihe urumuri rwaka, itanura ryikirere ryagenzuwe, itanura rya vacuum, itanura rya induction hamwe nubushyuhe bwo kurwanya birenze ubushyuhe bwa rerystallisation cyangwa ubushyuhe bwo kongera kugabanuka bitewe no gukwirakwiza ibintu byagurishijwe.Kubwibyo, iyo ubushyuhe bwa brazing bwegereye ubushyuhe bwa rerystallisation, igihe kigufi cyo gushakisha, nibyiza.Iyo ushushanyije hejuru yubushyuhe bwa Mo, igihe cyo gukonjesha nigipimo cyo gukonjesha bigomba kugenzurwa kugirango wirinde gucika biterwa no gukonja cyane.Iyo oxyacetylene flame brazing ikoreshwa, nibyiza gukoresha flux ivanze, ni ukuvuga borate yinganda cyangwa silver brazing flux hiyongereyeho ubushyuhe bwo hejuru burimo calcium fluoride, ishobora kubona uburinzi bwiza.Uburyo ni ukubanza gutwikira igipande cya feza isukuye hejuru ya Mo, hanyuma ikote hejuru yubushyuhe bwo hejuru.Ifeza ya brazing flux ifite ibikorwa mubushyuhe buke, kandi ubushyuhe bukora bwubushyuhe bwo hejuru burashobora kugera kuri 1427 ℃.

Ibice bya TA cyangwa Nb nibyiza ko byashizwe munsi ya vacuum, kandi impamyabumenyi ya vacuum ntabwo iri munsi ya 1.33 × 10-2Pa.Niba brazing ikozwe murwego rwo kurinda gaze ya inert, umwanda wa gaze nka monoxyde de carbone, ammonia, azote na dioxyde de carbone igomba kuvaho rwose.Iyo gushakisha cyangwa kurwanya gukorerwa bikorwa mu kirere, hazakoreshwa ibyuma bidasanzwe byuzuza ibyuma hamwe na flux ikwiye.Kugirango wirinde TA cyangwa Nb guhura na ogisijeni ku bushyuhe bwinshi, hashobora gushyirwaho igipande cy'umuringa w'icyuma cyangwa nikel kandi hashobora gukorwa imiti ijyanye no gukwirakwiza.