Incamake: Ikigereranyo gifatika cya Stellite 6 na Stellite 21, gisobanura uburyo ibirimo karubone na tungsten-na-molybdenum bitera ubukana nubukomezi.
Stellite 6 na Stellite 21 nuburyo bubiri bwa cobalt bushingiye kumyambarire akenshi ugereranije nundi. Ibisanzwe bisanzwe ni ukugaragaza Stellite 6 igihe cyose hari ukutamenya neza. Iyo ngeso ifite ishingiro ryumvikana: Satelite 6 ifite amateka maremare yo gusaba, imyitwarire yanditse neza, hamwe nuburambe bwo gutunganya. Ariko mubihe bibiri isanzwe irashobora kuzana ibyago bitari ngombwa: mugihe igice kibonye umuvuduko ukabije wumukino wamagare cyangwa ubushyuhe bwumuriro, kandi mugihe igice gifite urukuta ruto cyangwa igice gitunguranye gihinduka.
Icyogajuru 21 kibaho ahanini kugirango gikemure ubukana bwa Stellite 6 muri ibyo bihe. Gusobanukirwa ubucuruzi hagati yibi byombi bifite akamaro kuruta gufata mu mutwe imwe "nziza."
Itandukaniro ryibigize ritwara imikorere igabanijwe
Ikinyuranyo cyimikorere hagati yibi bivanze kamanuka kubintu bibiri byahimbwe.
Ibirimo karubone. Stellite 6 itwara urwego rwo hejuru rwa karubone. Munsi ya SAE AMS 5387, Stellite 6 casting ifite izina rya 60Co-29Cr-4.5W, hamwe na karubone mubisanzwe biri hagati ya 0.9-1.4% kubicuruzwa. Carbone nyinshi isobanura imvura igwa cyane ya karbide, izamura ubukana no kwambara. Stellite 21 ifite karubone yo hasi cyane, hamwe nizina ryizina rya C ~ 0,25%, Cr 25-30%, Mo 4.5-6.5%, Ni 1.5-3.5%, kuringaniza Co Lower carbone isobanura agace gato ka karbide hamwe na microstructure yiganjemo matrike ya cobalt ikomeye.
Tungsten na molybdenum. Icyogajuru 6 gikoresha tungsten (W) nkibikoresho byingenzi bikemura ibibazo; Stellite 21 isimbuza ibyinshi muri tungsten na molybdenum (Mo). Molybdenum ifite hafi kimwe cya kabiri cy'uburemere bwa atome ya tungsten, ku ijanisha rimwe rero itanga hafi inshuro ebyiri za atome. Molybdenum nayo ifitanye isano ya karubone kandi ikunda guteza karbide. Muri Stellite 21, ariko, urwego rwa karubone ruto rugabanya izo ngaruka, kandi net net ni munsi ya karbide yuzuye ugereranije na Stellite 6.
Hamwe na hamwe, itandukaniro ryombi ritanga imyirondoro ibiri itandukanye.
Icyogajuru 6: ubucucike bwa karbide mu rwego rwo kurwanya kwambara
Microstructure ya Stellite 6 igizwe na materix ya cobalt ishingiye cyane hamwe nogukwirakwiza gukabije kwa karbide. Iyi mikorere ikora neza munsi yimyambarire.
Aho bihuye. Valve ifunga amasura, amaboko ya pompe, ibikoresho bitunganijwe neza, hamwe nibice byambara muri rusange bitagereranywa nibisanzwe bya Stellite 6. Ubukomere bwabwo busanzwe bugwa murwego rwa Rockwell C 37-45, bitewe nuburyo bwo guta no kuvura ubushyuhe, ibyo bikaba bihagije kubibazo byinshi byo kwambara nabi. Muri okiside yubushyuhe bwo hejuru, Stellite 6 nayo ikora urwego rurinda okiside rushingiye cyane cyane kuri Cr₂O₃ na CoCr₂O₄, hamwe na okiside iri munsi ya Stellite 21.
Aho imipaka igaragara. Ubucucike bwa karbide bugira ingaruka: mugihe cyihuta cyumukino wo gusiganwa ku maguru cyangwa guhindurwa nubushyuhe bwaho, itandukaniro ryaguka ryumuriro hagati ya karbide na matrix rirashobora guhinduka ikibanza cyo gutangiriraho. Kubice bito, ibice byinshi bya karubone na karbide birashobora kandi kongera ibyago byo guturika mugihe cyo gutara no gutunganya. Ibi ntibisobanura ko icyogajuru 6 kidashobora gukoreshwa muribi bihe, ariko mugihe umunaniro wumuriro aribwo buryo bwiganje bwo kunanirwa, ubundi bugomba gusuzumwa neza.
Stellite 21: ibirimo karbide yo hasi kugirango habeho gukomera no kurwanya umunaniro ukabije
Stellite 21 ikurikiza ibitekerezo bitandukanye. Ibirimo bike bya karubone hamwe na molybdenum byongeweho bigabanya cyane agace ka karbide, hasigara matrike ya cobalt ikomeye-igisubizo nkicyiciro gitwara imikorere yubukanishi.
Ingaruka zitaziguye: icyumba-ubushyuhe bukomeye hamwe no kwambara neza kwangirika ni munsi ya Stellite 6, ariko gukomera, kurwanya ubushyuhe bwumuriro, no kurwanya umunaniro wumuriro nibyiza. Gukomera gukomeye mubisanzwe bivugwa muri HRC 30s hagati-hagati, munsi ya Stellite 6 (indangagaciro nyazo ziterwa nimiterere yibicuruzwa n'imiterere y'ibizamini - genzura amakuru yabatanga mbere yo kubisobanura). Akarusho kayo ntabwo yambaye ubusa ahubwo ni ukugumana ubusugire bwimiterere munsi yumukino wo gusiganwa ku magare.
Aho bihuye. Stellite 21 yakoreshejwe mubyuma bya gaz turbine, ibyuma bikora bishyushye, ibyuma bifata ubushyuhe bwo hejuru, hamwe nubudodo bwa weld bukenera kubuza kwagura ubushyuhe budahuye. Aho Stellite 6 ikora nk'urwego rwo hejuru kandi hakenewe urwego ruciriritse, Stellite 21 yakoreshejwe mumateka kugirango yorohereze itandukaniro ryaguka ryumuriro hagati yicyuma nicyuma cyo hejuru cya Stellite 6. Ubushakashatsi bwakozwe ku byuma bya F91 hamwe na Stellite 21 ya buffer, ifite hagati ya 550-650 ° C mu gihe cy’amasaha agera ku 8.760, yasanze igihombo gikomeye cyo gutakaza imbaraga kuri interineti ya F91 / S21, niyo mpamvu ibice bya buffer bishingiye kuri nikel bigenda bikundwa muri ubwo buryo bwihariye. Ibi birerekana umwanya wa alloy neza: agaciro kayo kari mubukomere mubihe byihariye, ntabwo ari ugusimbuza Stellite 6 ahantu hose.
Kwirengagiza byoroshye. Icyogajuru 21 gifite ubushobozi buke bwo kurwanya isuri. Kuberako ubucucike bwa karbide buri hasi, matrix itanga uburinzi buke mugihe ibice bikarishye byihuta. Munsi yisuri ntoya kandi yambaye nabi, Stellite 21 mubisanzwe ntabwo ari byiza.
Inzira ifatika yo guhitamo
Inzira ikurikira ishingiye kumikorere iranga ibice byombi. Irashobora kuba nk'intangiriro yo kugenzura ariko ntigomba gusimbuza isuzuma ryubwubatsi bwa porogaramu yihariye.
Wishingikirize kuri Satelite 6 iyo:
- Uburyo bwiganje bwo kunanirwa ni kwambara nabi, cyangwa gusiganwa ku magare ntabwo ari umutwaro ukomeye.
- Igice gifite igice kinini, kandi gukata ibyiyumvo mugihe cyo gukina no gutunganya birashobora gucungwa.
- Ubushyuhe bwa serivisi buri hejuru mu kirere cya okiside, kandi urwego rukingira oxyde irinda igice.
- Porogaramu ifite amateka ya Stellite 6 yashizweho hamwe namakuru yananiwe gukoreshwa.
Wishingikirize kuri Satelite 21 iyo:
- Igice gihura nubushyuhe bwihuse no gukonjesha, kandi gucika umunaniro wumuriro nikibazo kizwi.
- Igice gifite urukuta ruto cyangwa igice gitunguranye gihinduka, kandi gukomera bifite akamaro kuruta gukomera.
- Inzira yinzibacyuho irakenewe hagati yicyuma cyubatswe nicyuma gikomeye kugirango habeho gukwirakwiza ubushyuhe bwumuriro (ariko hagomba gusuzumwa igihe kirekire-ubushyuhe bwo hejuru).
- Uburyo bwo kwambara ahanini ni ibyuma-byuma kunyerera cyangwa kwambara aho kuba isuri ikomeye.
Mugihe nta na kimwe gikwiye: Niba porogaramu isaba kwangirika kwinshi kwinshi no kurwanya umunaniro mwinshi wumuriro, Stellite 12 (karubone yo hejuru, irwanya kwambara cyane) cyangwa umuryango wa Tribaloy wimvange ikomatanyirijwe hamwe irashobora kuba ikwiye kubitekerezaho, cyangwa gucunga ubushyuhe bwigice birashobora gukemurwa kurwego rwabigenewe. Icyerekezo kirenze uku kugereranya ariko ni mubyiciro byambere byo gutoranya ibikoresho.
Ibyo gushira muri RFQ
Ibyo aribyo byose byatoranijwe, uwatanze imashini nogukora imashini akenera ibi bikurikira mbere yuko atanga ibisobanuro bifatika:
- Igishushanyo cy'igice hamwe n'ibipimo by'ingenzi n'ibisabwa kwihanganira.
- Imiterere ya serivisi: ubushyuhe bwubushyuhe, buringaniye, nubwikorezi (kwambara, ingaruka, gusiganwa ku magare).
- Ubuzima buteganijwe cyangwa uburyo buzwi bwo gutsindwa, hamwe nigice cyamateka niba gihari.
- Ibipimo ngenderwaho, kurugero niba AMS 5387 cyangwa ikindi kintu cyakoreshwa kigomba kuba cyujuje.
- Umubare, kuva ibice bimwe, uduce duto, nubunini bwibikorwa biganisha kumahitamo atandukanye.
Kubintu bya cobalt bishingiye kumyanda, birakwiye kandi kwemeza niba uwabitanze afite ubushobozi murugo kuva gutara binyuze mumashini arangije, kubera ko aya mavuta akora cyane kuburyo bugaragara kandi ihererekanyabubasha hagati yibikorwa bigira ingaruka kubiciro ndetse nigihe cyo kuyobora.
