Quench Kutonhora Kukanda KweMhangura Vanofambisa

Nekuda kweiyo yakadziya inopisa kupisa kwejecha rekuumba, makuru mafuridzi anorema makumi ematani anogona kutonhorera kwemazuva akati wandei. Iyo inotonhora mwero weiyo machine machining inononoka, uye ma mechanical properties uye corrosion kuneta simba izvo zvinoumba kunaka mhedzisiro zvakadzikira zvakanyanya. 

Iyo mechanical zvivakwa uye corrosion kuneta simba remhando yakakosha mhedzisiro inoderedzwa zvakanyanya. Kunyanya kutenderedza 0.2 ~ 0.3R yeairfoil nekunyanya kushushikana kwekushanda, ukobvu hwemhepo (kunze kwehubhu) hwakakora kupfuura zvimwe zvikamu, saka kusimba kwekuneta kunodzokororwa 2x107, 18kgf / mm2, uye dhayamita inodarika. 6000mm inorema matani makumi maviri. Kumwero mukuru ngarava inofambisa castings, iyo corrosion kuneta simba pamudzi wemapapiro anodonha kusvika 2x107; 10 ~ 20 kgf / mm2. Chikonzero ndechekuti kumhanya kwekukanda kuri pakati pe1000 ° C uye 700 ° C. Kune mapropellers makuru, chiyero chekutonhora chinenge 0.1 ° C / min. 

Naizvozvo, masimbi eAl, Ni, uye Fe (akadai seFeAl, NiAl, nezvimwewo) ayo anotonga ma mechanical nickel-aluminum bronze alloys ane agglomeration Mukuwedzera, nickel-aluminium bronze castings inonzwa kune hydrogen absorption panguva kunyunguduka, uye kutonhora-kunonoka kukanda mahombe anowanzo gadzira hurema hwehydrogen.

Saizvozvo, iyo nyowani nzira yekukanda inozivikanwa ne:

• 1. Nezve huremu muzana yemakemikari akaumbwa mune izvo zvinhu: aruminiyamu 8.5 ~ 10.5%, nickel 4 ~ 6%, iron 4 ~ 6%, manganese 4% kana zvishoma, mhangura uye zvakajairika tsvina.
• 2. Panguva yekukanda, mushure mekukanda chiumbwa chendarira yakanyungudutswa muchiumbwa chinogona kudzora mwero wekutonhora, mwero wekutonhora unodzorwa pakati pe1000 ~ 700 ℃, 5 ℃ / min; pazasi 700 ℃, 1 ℃ / min.

Iyi nzira yekukanda yakasiyana nejecha mold uye kutonhora kwemhepo ine yakaderera thermal conductivity munguva yakapfuura. Pane kudaro, inoshandisa simbi zvidimbu zvine thermal conductivity yakapetwa makumi maviri kusvika makumi matatu kupfuura iyo jecha, uye inomisikidza kuburikidza-inotonhorera mvura. Mukuwedzera, kusati kwadururwa, nzira yekumanikidzira kutonhora kwemhangura yakanyungudutswa ine kemikari yakafanorongwa apo mvura inotonhora muforogo inodururwa uye kumanikidzirwa kutonhora kunoitwa. 

Chiyero chekutonhodza chakakwira zvakanyanya kupfuura icho cheyakajairwa nzira yekukanda, iyo inonyatso kudzivirira kuparara kweiyo corrosion kuneta simba uye mechanical zvimiro zvinoumba hunhu hunhu.

Iyi nzira yekukanda inotaura kuti kutonhora kuri pakati pe1000 ne700 ° C i5 ° C / min kana kupfuura, nekuti mwero wekutonhora hauna hukama nekunaya uye kukura kwemvura inodarika 1000 ° C, uye mvura inonaya (FeAl, NiAl pakati pe1000 ne700 ° C) Etc.) 

Kunaya uye tembiricha yekukura; pazasi pe700 ° C, tsanga dzekristaro dzinenge dzisisakure, uye mwero wekutonhora unogona kukwira pasi peiyi tembiricha mamiriro unofanirwa kuve nemutengo unogumira kuti ukure kusvika pakukura kwakakodzera. Muganho wepamusoro wechiyero chekutonhora hauna kutaurwa nekuti chimiro chekukanda chinosiyana, uye zvakanaka kuti 5 ° C / min kana kupfuura inokwana kudzora kukura kwemvura. Kutonhora kuri pasi pe700 ° C kunotsanangurwa kuve pasi pe1 ° C / min, kuitira kushandura β chikamu chinogadzirwa nekukurumidza kutonhora pamusoro pe1000 ° C kusvika 5 ° C / min pakati pe1000 ° C ne700 ° C kuita α. chikamu, kuve nechokwadi kuoma kwezvinhu, uye kubvumira zvinhu zvealloying kuti zvipararire zvakakwana kuti zvizadzise zvinhu homogeneity Mu. 

Iko hakuna muganho wakaderera weyero yekutonhora iri pasi pe700 ° C. Sezvineiwo, chiyero chekutonhora chinosiyana nechimiro chekukanda. Kana iyo yekutonhora iri pazasi 1 ° C / min, iyo α-chikamu shanduko inogona kukwana uye yakakwira corrosion kuneta simba inogona kuwanikwa. Neiyi nzira yekukanda, kukanda hakudi kupiswa-kurapwa zvakare pakupisa kwakanyanya, kunodzivirira matambudziko eiyo oxidation uye deformation inokonzerwa nekupisa kurapwa, uye inochengetedza simba.

Batanidza kuchinyorwa ichi: Quench Kutonhora Kukanda KweMhangura Vanofambisa

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