Tichifunga nezvekutadza kutsemuka kwe compressor rotor blade panguva yekuedzwa kwe turbo fan injini, pepa iri rinoongorora simba uye vibration maitiro eblade uye inogumisa kuti blade ine njodzi yekutinhira panguva yekushanda. Kudengenyeka kweblade kwakayerwa nenzira isiri-yekubata yekuyeresa, uye kuzununguka kwekunetseka kwerotor blade pasina makomba ekuora kwakawanikwa. Kuvimbika kwekushanda kweblade mune isiri-corrosion state yakasimbiswa nekuita yakakwirira-kutenderera kuneta bvunzo yeblade. Iyo crack yekuwedzera chikumbaridzo cheblade munzvimbo yekuora yakadzoserwa nePairs formula, uye chikonzero chekutsemuka kweblade chakaongororwa. Chikonzero chikuru chekutyoka ndechekuti blade inotanga kuumba makomba ekuora, uye yozotadza nekuda kwekuneta kuneta pasi pechiito chepamusoro-kutenderera mitoro. Iri bepa rinotarisa pakuvandudzwa kubva pakuona kwemaitiro, rinodzora tembiricha yekupisa, rinowedzera aluminium infiltration process pane blade pamusoro, zvinodzivirira kudzivirira blade kubva pakuputsika, uye inovandudza kuvimbika kwekushanda kweblade.

Iyo blade ndechimwe chezvikamu zvakakosha zveinjini, uye inoita basa rakakosha rekushandura simba rinopisa kuita simba remagetsi. Nekuda kwekumhanya kwayo kukuru, mutoro wakakura, uye mamiriro ekushanda akaoma, zviri nyore kukundikana panguva yekushanda. Aviation Stainless simbi ine simba rakakwirira, yakanaka plasticity, kuoma uye kuneta kuramba, uye yakaderera mumutengo. Inoshandiswa zvakanyanya muindasitiri yendege kugadzira mashizha einjini. Steam turbines anoshandiswa mundege dzemugungwa nemungarava, nekuda kwemamiriro ekunze ari mumhepo yemugungwa, senge tembiricha yakakwira, hunyoro hwepamusoro, salinity yakawanda, uye nzvimbo zhinji dzine mhute, zvinokanganisa zvakananga maitiro ekuora kwesimbi alloy zvinhu. Mashizha einjini anonyanya kunetseka kushungurudza uye kupera simba, izvo zvisingangodzikisi kushanda kwejini, asiwo zvinowedzera nguva yekuchengetedza uye mari.

Stress corrosion cracking inowanzoita brittle fracture inoitika pasina macroscopic deformation iri pachena. Kana ichinge yaumbwa, kudzvanya kwekushushikana kunowedzera nekukurumidza kupfuura mamwe marudzi ekuora kwenzvimbo, uye ndiyo inoparadza zvakanyanya rudzi rwecorrosion inozivikanwa kusvika parizvino. Zviwanikwa zvehuwandu zvinoratidza kuti kushushikana kukoromoka kwesimbi isina simbi kunotangira pakati pekutadza kwekutyoka, kunodarika 50%. Kwemakumi emakore, nyanzvi dzemunzvimbo dzine hukama pasi rese dzakazvipira kutsvagurudzo yekuora kuneta kwepamusoro-simba alloy simbi zvimiro, vachiisa hwaro hwakasimba hwekuvandudza kwekuyedza uye nzira yekuongorora yekuora kuneta kwezvimiro zvakadaro. Somuenzaniso, Liu et al. akadzidza nezve corrosion kuneta maitiro e38CrMoAl high-simba simbi uye akawana kuti kukuvadzwa kwecorrosion kwaizotanga kuoneka munzvimbo yepurasitiki yenzvimbo yemuenzaniso, ichimhanyisa kutanga kwekuneta kutsemuka. Guo Hongchao akadzidza kushanda kuneta kweQ690 high-simba resimbi munzvimbo inoparadza uye akawana kuti muganhu wekuneta wakaderera ne 30.15% uye 38.89% apo kutenderera kwemarara kwaiva 60 d uye 100 d, maererano. Jing Yongzhi akapfupikisa tsvakiridzo yakakodzera pane ejini inodzivirira yejasi yekudzivirira inoshanda munzvimbo dzemugungwa uye muchidimbu dhizaini yedhizaini yemachira ekudzivirira.

Tichitarisa kushushikana kwekupwanyika kwekuparara kwechikamu chekutanga rotor blade yecompressor panguva yekuedzwa kweimwe rudzi rweinjini, pepa iri rakaongorora kugadzikana-mamiriro ekushushikana uye kuzununguka mukati mehamvuropu yekushanda yeblade uye yakagumisa kuti blade yakanga ine resonance ngozi pasi pekunonoka kunononoka; akaita blade vibration yekutarisa bvunzo yakavakirwa pane isiri-yekubata dhizaini kuyerwa, uye yakawana iyo vibration kushushikana kwerotor blade isina makomba ekuora; yakabatanidzwa nemigumisiro yekuyera ye-blade high-cycle kuneta bvunzo, kushanda kwekuvimbika kweblade mumamiriro ezvinhu asina kuora kwakasimbiswa; fomula yePairs yakashandiswa kudzoreredza chikumbaridzo chekuwedzera kweblade mumamiriro ekuora, uye chikonzero chekutsemuka kweblade chakaongororwa. Migumisiro yekuongorora yaienderana nemhedziso yekuongorora kwekuputsika, kusimbisa kushanda kwekuongorora. Matanho ekudzivirira anoenderana akatorwa, uye kugona kwematanho kwakasimbiswa kuburikidza nekuedza.

1 Fault Overview
Iyo yekutanga-nhanho blade dhisiki uye kumberi kwejenari yeturbofan injini compressor yakabatanidzwa, uchishandisa 1Cr12Ni2WMoVNb inodzivirira kupisa simbi inofa yekugadzira uye yakakosha CNC machining. Pashure peanenge maawa 177 ekuedza kuedza, zvakawanwa kuti mashizha ose akanga akagovera zvisina kuenzana makomba akasiana-siana kubva pamudzi kusvikira kumuromo webadza, uye chipande chimwe chakanga chakatsemuka. Kureba kwekutsemuka kunosvika 8.3 mm, iri padhuze nemupendero wekupinda, anenge 4.8 mm kubva kumucheto kweplate, uye kutaridzika kweblade yakatsemuka kunoratidzwa muMufananidzo 1.
Iyo macroscopic morphology yenzvimbo yekuputsika inoratidzwa muMufananidzo 2, uko kwakajairika kuneta arcs uye radial mitsetse inogona kuonekwa. Nzvimbo yacho yakasviba mukati meinosvika 0.2 mm, zvichiratidza kuti kune zvigadzirwa zvekuora munzvimbo inotangira. Nzvimbo yakawedzerwa igrey-dema uye yakareruka yero, uye nhamba huru yekuneta arcs inogona kuoneka.

2 Chikonzero Ongororo
Kuti uwedzere kujekesa chikonzero uye maitiro ekukundikana, static simba rekuongorora, vibration kuongorora, kuputika kwekuwedzera kuongororwa uye kuongorora kwekuputsika kwakaitwa padanho rekutanga rotor blade ye compressor.

2.1 Static Strength Analysis
Zvinoenderana neiyo cyclic symmetric structural maitiro ekutanga-nhanho blade ye compressor, 1/31 dhisiki muviri uye yakazara blade yakatorwa semuenzaniso wekuverenga, uye iyo static simba rekuongorora yakaitwa uchishandisa ANSYS software platform. Iyo axial uye circumferential madhigirii erusununguko rwebhoti gomba node dzewebhu dzakamanikidzwa, uye mutoro wakafunga tembiricha, kumhanya uye aerodynamic simba. Iyo cyclic symmetric muganhu mamiriro akaiswa pane cyclic symmetry pamusoro. Iyo finite element modhi inoratidzwa muMufananidzo 3, uye kushushikana kugoverwa kwemuviri weblade pasi peiyo yakanyanya kushanda mamiriro inoratidzwa muMufananidzo 4. Mhedzisiro yekuverenga inoratidza kuti kushushikana kuri pakati penzvimbo yekumashure midzi yeblade. iyo yakakura, uye kushushikana pakatanga kutsemuka kweblade kwakadzikira, izvo zvinosangana nezvinodiwa zvekugadzira simba.

2.2 Vibration Analysis
Iyo modal yekuongorora yekutanga-danho rotor blade ye compressor yakaitwa. Iyo yekutanga-order vibration mode uye hukama hwekudengenyeka kudzvinyirira kugoverwa kweblade inoratidzwa muMufananidzo 5. Inogona kuonekwa kubva kuMufananidzo 5 kuti nzvimbo yekutanga-yepamusoro-soro yekudengenyeka kunetseka kunopindirana nechinzvimbo chekuputika kweblade. Iyo resonance speed diagram yeblade inoratidzwa muMufananidzo 6.

Pakati pavo, mirairo yekukurudzira inoda kuongororwa ndeiyi: K = 1, 2, 3, 4, inopindirana nekukanganiswa kwemhepo inoputika uye kuderera kwekutsvaga kwejini; nhamba yemapuranga ekufambisa mberi-nhanho ndeye 38, uye nhamba yemashure emashure ekutungamirira mashizha ndeye 52. Sezvinoratidzwa mumufananidzo 6, mukati mejini yekushanda kwekukurumidza, pane resonance point pakati peK = 3 nguva excitation. mutsara uye yekutanga-yekurongeka kwemaitiro frequency mutsara weblade. Iyo inoenderana neinjini yekushandisa kumhanya ndiyo inononoka kumhanya, iyo resonance point iri pazasi inononoka kumhanya, uye resonance margin ndeye 5.4%.

Kuti uone kuodha kwekutanga resonance njodzi yeblade iri pasi peK = 3 nguva yekunakidzwa, kuzununguka kwedanho rekutanga rotor blade yecompressor yakayerwa uchishandisa isina-inobata blade vibration kuyerwa hurongwa. Iyo yekutanga-nhanho rotor blades ye compressor yakaongororwa isati yaedzwa, uye hapana makomba ekuora akawanikwa.
Kuti uyere iyo yakanyanya vibration kushushikana inogona kuitika mublade mukati mehamvuropu renji, bvunzo dzakamhanya dzakafunga kusanganiswa kweakasiyana gidhi vane kuvhura angles uye inlet tembiricha mamiriro, uye inokwana mitanhatu yenyika bvunzo dzakaitwa. Iyo yekumhanyisa test spectrum inoratidzwa muMufananidzo 6.

Nheyo yekutanga yekusaonana kwekuedza kuomesesa yakakamurwa kuita matanho maviri: danho rekutanga ndeyekuyedza tip amplitude kukosha kweblade pasi peiyo resonance mamiriro pasi peiyo chaiyo yekushanda mamiriro eblade; danho rechipiri ndere kuverenga mhedzisiro yekuomerwa kweinodiwa strain yekuyera poindi pane resonance zvichibva pahukama hwekutendeuka pakati pemablade strain uye tip amplitude. The vibration displacement, resonant speed and frequency results of the blade in the first cycle speed-up process under state 1 inoratidzwa muMufananidzo 8. The horizontal axis in the figure is the blade number, uye vertical axis is displacement, resonant speed, uye resonant frequency kubva kumusoro kusvika pasi. Yekutanga-odha yekuzunguza kushushikana kweblade yakawanikwa mushure mekutendeuka inoratidzwa muTafura 1.

Ichitaura nezveHB 5277-84, iyo yakakwirira-kutenderera kudengenyeka kuneta muganho weblade yakayerwa nenzira yekusimudza, uye 15 data chaiyo yakawanikwa. Iyo 107-kutenderera kuneta muganho-3σ kukosha kweblade ine 5% kukanganisa muganho (kureva, 95% yekuvimba level, 99.73% yekupona mwero) yaive 485MPa. Iyo yakakwirira-kutenderera kuneta kuchengeterwa kuongororwa uchishandisa kuneta muganhu-3σ kukosha kweblade kunoratidzwa muMufananidzo 9, uko kurongeka ndiko kushushikana kwekudengenyeka uye iyo abscissa ndiyo yakadzikama-nyika kunetseka. Sezvinoonekwa kubva kuMufananidzo 9, kushushikana kwekudengenyeka pakuputika kweblade kunogoverwa pazasi peGoodman curve ine fatigue reserve ye 1.7, uye iyo yakakwira-kutenderera kuneta chengetedzo inoverengerwa uchishandisa yakanyanya vibration kushushikana ndeye 5.2, saka blade ichaita. kusatambura nekukuvara kwepamusoro-kutenderera kuneta.

2.3 Crack propagation wongororo
Kuti uone kana blade inogona kupararira kuneta pasi pechiito che-high-cycle alternating mitoro, kuongorora kupararira kwekuputika kweblade iko zvino kunoitwa.
Mutemo wekukura kwekuneta unoratidzwa muMufananidzo 10. Inogona kuonekwa kubva kuMufananidzo 10 kuti kune matunhu matatu pakati pekuneta kuparara kwekukura kwehuwandu da / dN uye kushungurudzika kwakanyanya kwechikonzero ΔK.
a) Nzvimbo yekutanga ndiyo inononoka kuneta kutsemuka danho rekukura. Pane kuneta kuparara kwekukura kwechikumbaridzo kukosha ΔKth. Apo ΔK yakaderera kupfuura ΔKth, kuneta kunoputika hakukuri kana kukura zvishoma nezvishoma;
b) Kukura kwekuneta kunokanganisa mudunhu rechipiri kunotevera mutemo wekushanda kwesimba. Iko kuneta kunowedzera kukura kwehuwandu da/dN inogona kuratidzwa nesimba rekushanda kwekushushikana kwesimba factor amplitude ΔK. Iyo Paris formula inoshandiswa zvakanyanya kuiratidza;
c) Nzvimbo yechitatu ndiyo nhanho yekukura nekukurumidza. Kana mutswe uchikura zvishoma nezvishoma pedyo kana kusvika paKIC (1 – R), mutswe unokura nekukurumidza. Sezvinoonekwa kubva kuMufananidzo 1, kutsemuka kweblade kunotanga kubva mugomba rekuora, uye kuneta kutsemuka kwekukura kunogadzirwa munzvimbo yenzvimbo padyo nepamusoro pegomba rekuora. Ongororo yeVibration inoratidza kuti yekutanga-order vibration stress pabeche rakatsemuka ndiko kushushikana kwekushushikana padivi pemupendero wekutora, uye kutsemuka kwekutanga ndekweI-type crack. Nzvimbo yekushushikana uye nzvimbo yekutamisa pedyo neI-type crack tip inogona kurerutswa se: Ona fomula (1) uye (2) mumufananidzo.
Ikoko: KI ndiyo inoshungurudza intensity factor yeI-type crack tip; r ndiyo polar radius ye crack tip mu polar coordinates; fij (I) (θ) uye g(ijI) (θ) ibasa rekushushikana uye basa rekutamisa zvichiteerana.
Zvinoenderana nemutsara elastic fracture mechanics, kutaura kwekushushikana kwakanyanya kunoratidzwa mune formula (3), apo: Δσ ndiyo inoshungurudza amplitude; a ndiyo saizi yekutsemuka; Y ndiyo coefficient yechimiro. Sezvo chimiro chegomba recorrosion chiri chinenge elliptical surface crack, iyo shape coefficient Y inotorwa se 1.12. Shandura fomula (3) kuti uwane (4).
Ikoko: a0 ndiyo yakakosha saizi yekupwanya kwekuneta. Kana saizi yekutsemuka iri pasi pe0, kuneta kuputika hakuzoitika mublade.
Kune martensitic simbi, Barsom akawana hukama hunotevera hwemagetsi (5). Kupi: R ndiyo chiyero chekushushikana. Ndiko kuti, sezvo huwandu hwekushushikana hunowedzera, kukosha kwechikumbaridzo chekushushikana kwesimba resimbi yemartensitic kuchaderera.

Iyo data yemuenzaniso yeyeyero yekudengenyeka kushushikana inoongororwa nenhamba, uye kuwanda kwekugovera kweblade vibration stress inoongororwa. Iyo histogram ye vibration stress frequency distribution inoratidzwa muFigure 11. Sezvinoratidzwa mumufananidzo 11, kudengenyeka kwekunetseka kunopindirana nekugoverwa kwemazuva ose, uye jira rakakodzera rinoteerera X~N (36.86, 323.336) kugovera. Iyo vibration stress + 3σ kukosha (kureva 95% chiyero chekuvimba, 0.13% chiyero chekupona) inoverengerwa kuva 88 MPa.

Zvichienderana nekudengenyeka kwekunetseka + 3σ kukosha uye kugadzikana-kugadzikana kwemamiriro ekumhanya kweresonant yeblade, chiyero chekushungurudzika R pakutsemuka kwekutanga kweblade inoverengwa kuva 0.2. Kubva pafomula (5), inogona kuverengerwa kuti kukosha kwechikumbaridzo chekushushikana kwakanyanya ΔK inoenderana nereshiyo yekushushikana R ye0.2 ndeye 5.31 MPa · m1/2. Kubva pane formula (4), inogona kuverengerwa kuti yakakosha crack size a0 yekuneta kutsemuka ndeye 0.23 mm. Hudzamu hwegomba recorrosion rakayerwa zvizere 0.25 mm. Kubva pakuverenga kuri pamusoro, zvinogona kuoneka kuti kana kudzungudza kunetseka kunotora kukosha kwe +3σ, kudzika kwegomba rekuora kunogona kusvika pakukura kwakakosha uye kutsemuka kuchawedzera. Sezvo iyo vibration stress kugovera kunotevera kugoverwa kwakajairwa, iyo vibration stress chikamu chakaderera pane kukosha kwe +3σ haigone kusangana nemamiriro ekuwedzera crack. Ongororo inoratidza kuti izvi zvine chekuita nekuderedzwa kwezvinhu zvemukati mushure mekunge blade yaora.

Sezvo nzvimbo inoparadza ichaderedza kushushikana kwesimba resimbi, zvichiita kuti blade iwedzere kuputika, iyi stress intensity factor amplitude inonzi corrosion fatigue stress intensity factor amplitude threshold value, inomiririrwa neΔKthCF. Ikozvino iyo stress intensity factor threshold value yeblade pasi penzvimbo inoora yakadzoserwa kumashure. Tichifunga kuti saizi yakakosha yekutsemuka kweblade i 0.25 mm, avhareji kukosha kweiyo vibration stress ndeye 36.86 MPa uye formula (3) inoshandiswa kuverenga kukosha kwekushushikana kwechikumbaridzo cheblade pasi penzvimbo inoparadza kuve 2.31MPa · m1/2. Ongororo yacho inoratidza kuti nharaunda inoora inoderedza kukosha kwechikumbaridzo chekushushikana kwakanyanya kweblade. Kana iyo stress intensity factor pa crack initiation point yeblade inosvika pachikumbaridzo chekuwedzera mutswe munzvimbo ine corrosion, iyo corrosion fatigue crack inotanga, uyezve kuneta kuwedzera kunoitika.

2.4 Kuongororwa kwekuputsika
Kuputsika kwekuongorora kwechidzitiro chakatsemuka kunoratidza microscopic morphology yenzvimbo yakaputsika muMufananidzo 12. Mamiriro emhando ye intergranular anogona kuonekwa munzvimbo inobva, uye yakanaka corrosion gomba morphology inogona kuonekwa pamusoro pezviyo. Iko kutsemuka kwe micromorphology kunoratidzwa muMufananidzo 13. Kutsemuka kunosvika kumucheto wekupedza, uye maitiro ebhendi ekuneta anogona kuonekwa pamberi, panguva, uye mushure mekuwedzera.

Sampuli yemetallographic yakachekwa kubva pakatsemuka blade parallel kune iyo crack direction. Sample yakagadzikwa uye yakakwenenzverwa kuona iyo microstructure. Iyo morphology inoratidzwa muMufananidzo 14. Sezvinogona kuonekwa kubva kuMufananidzo 14, nhamba huru ye intergranular cracks inogona kuonekwa pamucheto wekutora weblade yakatsemuka. Kudzika kwakadzika hakuna kudzika, kunenge 0.25mm, uye yakanaka intergranular cracking maitiro anogona kuonekwa pedyo nemuganho wezviyo, zvichiratidza kuti makomba ari pamucheto wekupinza weblade anokonzerwa nekuora.

Kuongororwa kwesimba remagetsi pamuganho wezviyo kunoratidza kuti nzvimbo yekutsemuka inonyanya kuve nezvinhu zvinoora zvakaita seO, S, uye C, uye kune zvakare huwandu hweO element munzvimbo yekuwedzera. Kune zvakare zvinhu zvinoparadza zvakaita seS uye O mune dzimwe nzvimbo dzegomba uye nepamusoro peblade, ona Tafura 2.

Mhedzisiro yekuongorora yakatyoka inoratidza kuti makomba ari pamupendero weblade inlet uye nzvimbo yekutsemuka padyo nezviyo zvinokonzerwa nekuora. Kubva pamaonero ehupamhi hwekukuvadzwa kwecorrosion uye nzvimbo yekutsemuka, iyo crack source nzvimbo iri padyo nemudzi weblade, zvichiratidza kuti kuneta kwekuwedzera kweblade hakunei chete nehuwandu hwekuora kwepasi, asiwo kune kushushikana kukuru kwekudengenyeka kunotakurwa nechinzvimbo ichi panguva yekushanda. Iyo blade inogona kutanga yaita ngura ichitsemuka parutivi rwezviyo, uyezve kuneta kuwedzera kunoitika pasi pechiito chekushanda kunetseka.

3 Kuongorora Kwakazara Kwechikonzero

Zvikonzero zvekutadza kweblade uye kuputsika zvinopfupikiswa sezvizvi: rotor blades dzinowanzoshanda mumahombekombe uye mukati menyika inonyorova uye inopisa nzvimbo. Mhepo ine mazinga akakwira ekuora media senge sarufa neklorini, uye iyo pH kukosha yakaderera. Pasi pesimba rezvakatipoteredza, mashizha anotanga kuora, uye makomba asina kuenzana nemakomba anoumbwa pamucheto wemhepo inopinza. Kugadzirwa kwemakomba ekuora kunoburitsa kushushikana kwenzvimbo, saka kuneta kwekutsemuka kwemablades kunobva mumakomba ekuora.

Corrosion inoderedza zvakanyanya simba rekubatanidza pakati pezviyo zvezvinhu uye inoderedza kukosha kwechikumbaridzo chekushushikana kwekusimba kwechinhu. Pasi pechiito che-high-cycle vibration stress, magomba ekuora anotanga kushanduka kuita kuputika. Kana iyo stress intensity factor value yeakaenzana mutswe pagomba rekuwora reblade inosvika pachikumbaridzo cheiyo stress intensity factor yekuwedzera kwecorrosion kuneta kuputika, iyo corrosion kuneta kuputika kunotanga. Mushure mezvo, pasi pechiito chakabatanidzwa chezvakatipoteredza zvinopisa uye mitoro yepamusoro-soro inoshandura mitoro, kuora kuneta kunoputika kunosimudzirwa kuti kuwedzere, uye pakupedzisira kuparara kuneta kuneta kwemashizha kunokonzerwa.

4 Matanho ekuvandudza uye ongororo

4.1 Maitiro ekuvandudza
Sezvo marotor blades achisangana nemaitiro uye aerodynamic kuita zvinodiwa maererano nekugadzirwa kwemaitiro, zvinotevera kuvandudzwa kuviri kunotariswa kubva pakuona kwemaitiro:
a) Munguva yekugadzira yekugadzira, tembiricha yekudziya inodzorwa kuti ivandudze corrosion resistance yechinhu;
b) Yakadzika-tembiricha aluminizing process inowedzerwa kune blade pamusoro kuti ivandudze corrosion resistance yeblade.

4.2 Kuongororwa kwezviyero
Kuti uone kushanda kwematanho, munyu wekupfapfaidza corrosion bvunzo pane zvimwe chete zvinhu zvienzaniso zvakaitwa. Zvinoenderana nezvinodiwa zveGJB150.11A-2009[19], zvienzaniso zvakagadzirwa, uye zviyero zvinoratidzwa muMufananidzo 15. Zviyero zvitatu zvinopisa pa 590 ℃ pasina aluminizing, zvienzaniso zvitatu zvinopisa pa580 ℃ pasina aluminizing, uye zvitatu zvinopisa. pa580 ℃ ine aluminizing yakatorwa kuti munyu pfapfaidzo corrosion bvunzo, uye pesvedzero aluminizing muitiro uye tembiricha tembiricha pamusoro munyu pfapfaidzo ngura kuramba 1Cr12Ni2WMoVNb zvinhu zvakaongororwa. Iyo bvunzo ma paramita eyeyedzo maitiro anoratidzwa muTafura 3, uye kutaridzika kwechidimbu chekuyedza mushure memaawa makumi mapfumbamwe nematanhatu emunyu wekupfapfaidza corrosion inoratidzwa muMufananidzo 96.

Mhedzisiro yebvunzo inoratidza kuti kuomarara kwe580 ℃ tempered sample kuri nani pane iyo ye590 ℃ tempered sample; iyo aluminized layer inononoka kukora kweiyo substrate uye inoita basa mukudzivisa kusvibiswa kwemunyu.
Mushure mekushandisa matanho ekuvandudza ari pamusoro apa, rotor blades yejini yakasvika kumagumo ehupenyu hwebasa rayo yakaparadzaniswa uye yakaongororwa, uye hapana kuora kana kuputsika kwakaitika, zvichiratidza kuti zviyero zvakasimbiswa kuti zvinoshanda.

mhedziso

Tsvagiridzo yakabatana yakaitwa pakuora uye kuputsika kwemashizha panguva yekuyedzwa kweimwe mhando yeinjini, uye zvinotevera zvinogona kutorwa:

Maererano nekuongorora kwekufananidza, zvinogona kuonekwa kuti mashizha ane resonance pasi pekukurumidza kunonoka; maererano nekusasangana kwekuyeresa kuyera kuyerwa kwemuchina wese uye yakakwirira-kutenderera kuneta bvunzo yekuyera mibairo yemablades, inogona kuratidzwa kuti mablades anoshanda akavimbika mune isiri-corrosive state.

Chikonzero chikuru chekutyoka ndechekuti blade inotanga kuomeswa, uye ngura inoderedza kuneta kutsemuka kwekuwedzera pachikumbaridzo chechinhu. Kana iyo stress intensity factor value yeyakaenzana kutsemuka pagomba rekuwora reblade inosvika pakushushikana kwesimba factor pachikumbaridzo cheiyo corrosion fatigue crack yekuwedzera, iyo corrosion kuneta kuputika kunotanga, uyezve kutadza kuneta kunoitika pasi pechiito chepamusoro kushandura kutenderera. load. Kupesvedzera kwecorrosion pachikumbaridzo chekuneta kwekuparuka kune hukama neyakaora svikiro, kurongeka uye zvivakwa zvezvinhu, tembiricha, chiyero chekushushikana uye chimiro chekuremerwa, izvo zvakaoma kunzwisisa uye zvinoda kumwe kutsvagisa kwakadzama.

Izvo zvinodikanwa kubhadhara kune iyo dhizaini pfungwa ye chisvo unodzivirira kupfeka. Semuyenzaniso, yakaderera-tembiricha aluminizing process inogona zvinobudirira kuvandudza corrosion kuramba uye sevhisi hupenyu hweblade. Nekudaro, iyo yakaderera-tembiricha aluminizing process inogona kukanganisa paramita senge crack kuwedzera chikumbaridzo, uye kuwanda kwesimba rayo kunoda tsvakiridzo yakadzama kuburikidza nekuyedza kwakakodzera.