Sei pombi dzesimbi dzichifanira kurapwa kupisa?

Basa rekupisa kupisa nderokuvandudza zvinhu zvema mechanical zvepombi yesimbi, kubvisa kusara kunetseka uye kuvandudza kushanda kwayo kwekucheka.

Zvinoenderana nezvinangwa zvakasiyana zvekupisa kupisa, nzira yekurapa kupisa inogona kukamurwa kuita mapoka maviri: yekutanga kupisa kurapwa uye yekupedzisira kupisa kurapwa.

1. Preliminary kupisa kurapwa

Chinangwa chekutanga kupisa kupisa ndechekuvandudza machinability, kubvisa kushushikana kwemukati uye kugadzirira yakanaka metallographic chimiro chekupedzisira kupisa kurapwa.Maitiro ayo ekupisa kupisa anosanganisira annealing, normalizing, kuchembera, kudzima uye kupisa, nezvimwe.

(1) Anealing uye Normalizing

Annealing uye normalizing inoshandiswa kune inopisa yakashanda blanks.Kune kabhoni simbi uye alloy simbi ine kabhoni yemukati yakakura kupfuura 0.5%, annealing kurapwa kunowanzoshandiswa kuderedza kuoma kwayo uye nyore kucheka;Kune kabhoni simbi uye alloy simbi ine kabhoni yemukati isingasviki 0.5%, normalizing kurapwa inogamuchirwa kuitira kudzivirira kunamatira chishandiso panguva yekucheka.Inowanzo kurongeka mushure mekugadzirwa kusina chinhu uye kusati kwaitwa rough machining.

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(2) Kurapa kukwegura

Kurapa kwekuchembera kunonyanya kushandiswa kubvisa kushushikana kwemukati kunogadzirwa mukugadzira isina chinhu uye machining.

Kuti udzivise basa rekufambisa rakawandisa, kune zvikamu zvine huroyi hwakazara, kurapwa kwekuchembera kunogona kurongwa usati wapedza.Nekudaro, kune zvikamu zvine hupamhi hwepamusoro zvinodiwa, maviri kana anopfuura maitiro ekurapa ekuchembera acharongwa.Kurapa kukwegura kazhinji hakudiwi pazvikamu zviri nyore.

(3) Conditioning

Kudzima nekudzikamisa kunoreva kurapwa kwepamusoro-tembiricha mushure mekudzima.Iyo inogona kuwana yunifomu uye yakanaka yakadzikama sorbite chimiro uye kugadzirira kudzikisa deformation panguva yekudzima kwepamusoro uye nitriding kurapwa mune ramangwana.Naizvozvo, kudzima uye kupisa kunogona zvakare kushandiswa sekutanga kupisa kupisa.

2. Kupedza kupisa kurapwa

Chinangwa chekupedzisira kupisa kupisa ndechekuvandudza ma mechanical zvinhu zvakadai sekuoma, kupfeka kuramba uye simba.

(1)Kudzima

Kudzima kunosanganisira kudzima kwepamusoro uye kudzima kwakakosha.Pakati pavo, kudzima kwepamusoro kunoshandiswa zvakanyanya nekuda kwediki deformation, oxidation uye decarburization.Uyezve, kudzima kwepamusoro kune zvakare zvakanakira simba rekunze repamusoro, kupfeka kwakanaka kuramba, kunaka kwemukati kuoma uye kwakasimba kupikisa kuramba.

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(2) Carburizing Kudzima

Carburizing uye kudzima kunoshanda kune yakaderera kabhoni simbi uye yakaderera alloy simbi.Chekutanga, wedzera iyo kabhoni yemukati yekumusoro layer yezvikamu, uye uwane yakanyanya kuomarara mushure mekudzima, nepo musimboti uchiri kuchengetedza rimwe simba uye kuoma kwepamusoro uye plastiki.

(3) Nitriding Treatment

Nitriding inzira yekurapa yekuita kuti maatomu enitrogen apinde mukati mesimbi kuti awane mutsetse wenitrogen-container compounds.Nitriding layer inogona kuvandudza kuomarara, kupfeka kuramba, kuneta simba uye kuomarara kuramba kwezvikamu.Sezvo tembiricha yekurapa nitriding yakadzikira, deformation idiki, uye nitriding layer yakatetepa (kazhinji haipfuure 0.6 ~ 0.7mm), iyo nitriding process inofanirwa kurongwa nekunonoka sezvinobvira.Kuti uderedze deformation panguva ye nitriding, kudziya kwepamusoro-kupisa kubvisa kushushikana kunowanzo kudiwa mushure mekucheka.


Nguva yekutumira: Mar-04-2022