Isahani yubushyuhe bwo hejuru ni ibikoresho byihariye bikomeza imikorere myiza mubushyuhe bwo hejuru. Ikoreshwa cyane mu kirere, ingufu, imiti, no mubindi bice. Ibyiza byayo bigaragarira cyane cyane mubice bikurikira:

1. Ubwiza buhebuje bwo hejuru-Ubushyuhe

Kugumana imbaraga-Ubushyuhe bwo hejuru: Ndetse no mubushuhe bwo hejuru hejuru ya 600 ° C, bugumana imbaraga zingana, zitanga imbaraga, nimbaraga zumunaniro, kandi ntizoroha vuba hamwe nubushyuhe bwiyongera. Kurugero, nikel ishingiye kuri nikel igumana imiterere yubukanishi ihagije mubushyuhe bugera kuri 1000 ° C, byujuje ibisabwa mubice byingenzi nka moteri ya turbine.

Creep Resistance: Iyo ihuye nigihe kirekire nubushyuhe bwo hejuru, ibikoresho byerekana ihinduka rito (répistance anti-creep), bikarinda kunanirwa kubera ihinduka ryimiterere. Ibi nibyingenzi kubikoresho nka turbine na boiler bikorera mubushyuhe bwo hejuru hamwe n’umuvuduko mwinshi.

2. Oxidation nziza cyane no kurwanya ruswa

Kurwanya Ubushyuhe Bwinshi bwa Oxidation: Mu kirere cyangwa gaze y’ubushyuhe bwo hejuru, ibintu bigize firime yuzuye ya okiside (nka Cr₂O₃ cyangwa Al₂O₃) hejuru yayo, ikarinda ikindi gitero cya ogisijeni, irwanya ruswa ya okiside, kandi ikongerera igihe cyo gukora. Kurugero, amasahani avanze arimo chromium na aluminium bikomeza kurwanya okiside nziza mubushyuhe buri hejuru ya 1000 ° C.

Kurwanya ruswa: Amavuta yo mu rwego rwo hejuru arwanya imyuka ya aside na alkaline (nka hydrogen sulfide na dioxyde de sulfure), ibyuma bishongeshejwe, hamwe n’umunyu, bigatuma bikwiranye n’ibidukikije bigoye nka reaction ya chimique, gutwika imyanda, hamwe n’ibikorwa bya kirimbuzi.

3. Uburyo bwiza bwo gutunganya no guhagarara neza

Gutunganyirizwa: Nubwo bifite imbaraga nyinshi, amavuta yubushyuhe bwo hejuru arashobora gushingwa muburyo butandukanye, harimo amasahani hamwe nigituba, binyuze mubikorwa nko guhimba, kuzunguruka, no gusudira, kugirango byuzuze ibisabwa muburyo bwububiko bwibikoresho bitandukanye (nk'ibyuma bitarwanya ubushyuhe kubibiko binini hamwe nicyumba cyo gutwika kuri moteri yindege).

Microstructural Stabilite: Ndetse hamwe nigihe kirekire cyo gukoresha ubushyuhe bwo hejuru, imiterere yimbere yimbere (nkicyiciro cya alloy hamwe nuburyo bwimbuto) ntabwo ishobora guhinduka cyane. Ibi birinda kwangirika kwimikorere bitewe no kwangirika kwimiterere kandi bitanga imikorere yigihe kirekire yizewe yibikoresho.

4. Ubushyuhe Bwinshi, Bikwiranye Ibidukikije Bikabije

Isahani ivanze itwikiriye ubushyuhe buri hagati yubushyuhe bwo hejuru (600 ° C) kugeza ubushyuhe bukabije (hejuru ya 1200 ° C). Isahani ya aliyumu ifite ibice bitandukanye ikwiranye nuburyo butandukanye: urugero, ibivanze bishingiye ku byuma bikwiranye nubushyuhe buri hagati ya 600-800 ° C, ibinyomoro bishingiye kuri nikel bikwiranye nubushyuhe buri hagati ya 800-1200 ° C, kandi ibivangwa na cobalt birashobora gukoreshwa mubushyuhe bwo hejuru mugihe gito.

Barashobora kwihanganira ingaruka ziterwa nubushyuhe bwo hejuru hamwe nuburemere bwimashini. Kurugero, disiki ya turbine muri moteri yindege igomba guhangana nubushyuhe bwo hejuru bwa gaze yaka ndetse nimbaraga za centrifugal zatewe no kuzunguruka byihuse.

5. Ibiremereye hamwe ningufu zo kuzigama ingufu

Ugereranije n’ibyuma gakondo birwanya ubushyuhe, bimwe mubushyuhe bwo hejuru (nka nikel ishingiye kuri nikel na titanium-aluminiyumu ishingiye ku mavuta) bifite ubucucike buke ku mikorere imwe y’ubushyuhe bwo hejuru, bigira uruhare mu bikoresho byoroheje (urugero, kugabanya uburemere bw’imiterere no gukoresha ingufu mu nganda zo mu kirere).

Kubera ubushyuhe bwo hejuru bwokwirinda no kuramba, birashobora kugabanya ibikoresho byo gufata neza inshuro hamwe nigiciro cyo gusimbuza, kuzamura mu buryo butaziguye ingufu zingufu (urugero, gukoresha amasahani yubushyuhe bwo hejuru yubushyuhe mumashanyarazi ashobora kongera ubushyuhe bwokongoka no gukora neza).