Matekinoroji ehunyanzvi eiyo huru shaft forging yemhepo turbine jenareta

1. Kunyunguduka

Iyo huru shaft simbi inofanirwa kunyungudutswa uchishandisa mavira emagetsi, nekunatsa kunze kwechoto uye vacuum degassing.

2.Forging

Iyo shaft huru inofanira kuve yakananga kuumbwa kubva kusimbi ingots. Kurongeka pakati peaxis ye shaft huru uye mutsara wepakati we ingot inofanira kuchengetedzwa zvakanyanya sezvinobvira. Mvumo yemidziyo yakakwana inofanirwa kupihwa kumigumo yese yeingot kuti ive nechokwadi chekuti shaft huru haina maburi ekuderera, kuparadzaniswa kwakanyanya, kana kumwe kukanganisa kwakakosha. Kuumbwa kweiyo shaft huru kunofanirwa kuitwa pakugadzira michina ine huwandu hwakaringana, uye chiyero chekugadzira chinofanira kunge chakakura kupfuura 3.5 kuve nechokwadi chekugadzira uye yunifomu microstructure.

3.Heat kurapwa Mushure mekugadzira, shaft huru inofanira kupinda normalizing kupisa kurapwa kuti ivandudze maitiro ayo uye machinability. Welding of the main shaft haibvumidzwe panguva yekugadzira nekugadzira.

4.Chemical composition

Mutengesi anofanirwa kuita ongororo yekunyungudika kune yega yega simbi yemvura, uye mhedzisiro yacho inofanirwa kuenderana nemirairo yakakodzera. Zvinodiwa zve hydrogen, okisijeni, uye nitrogen yemukati (chikamu chehukuru) musimbi ndeizvi: hydrogen yemukati isingadariki 2.0X10-6, okisijeni yemukati isingadarike 3.0X10-5, uye nitrogen yemukati isingapfuuri 1.0X10-4. Kana paine zvakakosha zvinodikanwa kubva kune mutengi, mutengesi anofanirwa kuita yakapedzwa chigadzirwa chekuongorora cheiyo shaft huru, uye zvakanangana zvinodiwa zvinofanirwa kutsanangurwa muchibvumirano kana odha. Kutsauswa mukati memiganhu inotenderwa yekuongorora chigadzirwa chakapedzwa kunobvumidzwa kana yatsanangurwa nemirairo yakakodzera.

5.Mechanical properties

Kunze kwekunge zvatsanangurwa neimwe nzira nemushandisi, iyo mechanic zvimiro zveshaft huru inofanirwa kusangana nezvinodiwa. Iyo Charpy impact test tembiricha ye42CrMoA main shaft iri -30°C, ukuwo 34CrNiMoA main shaft, iri -40°C. Kutorwa kwesimba reCharpy kunofanirwa kusimbiswa zvichibva pane arithmetic zvinoreva ezvienzaniso zvitatu, zvichibvumira mufananidzo mumwe chete kuve nemhedzisiro yebvunzo yakaderera pane iyo yakakosha kukosha, asi isiri pasi pe70% yehukoshi hwataurwa.

6.Kuoma

Kufanana kwekuoma kunofanirwa kuongororwa mushure mekuita kupisa kwekupisa kweiyo shaft huru. Musiyano mukuoma pamusoro peiyo shaft huru imwechete haifanire kudarika 30HBW.

7.Non-kuparadza kuedza General Zvinodiwa

Iyo shaft huru haifanirwe kuve nekukanganisa kwakadai sekutsemuka, mavara machena, shrinkage makomba, kupeta, kuparadzaniswa kwakanyanya, kana kuunganidza kwakanyanya kweasina-metal inclusions anokanganisa kushanda kwayo uye kunaka kwepamusoro. Kune ma main shafts ane maburi epakati, mukati megomba panofanira kuongororwa, iyo inofanira kunge yakachena uye isina tsvina, thermal spalling, ngura, zvimedu zvematurusi, mavanga ekukuya, mavanga, kana spiral flow lines. Shanduko dzakapfava dzinofanira kuvapo pakati pemadhayamita akasiyana pasina makona akapinza kana mipendero. Mushure mekudzima uye kupisa kurapwa kwekupisa uye kutendeuka kwakashata kwepamusoro, iyo shaft huru inofanira kupinda 100% ultrasonic flaw yekuona. Mushure mekuita machining ekunze kweiyo shaft huru, magineti particle inspection inofanira kuitwa pamusoro pekunze kwese uye zviso zvese zvekupedzisira.

8.Grain size

Avhareji saizi yezviyo yeshaft huru mushure mekudzima uye kupisa kunofanirwa kunge kwakakura kupfuura kana kuenzana nemagiredhi 6.0.