Fastener kupisa kurapwa, mukuwedzera kune yakajairika yemhando yekuongorora uye kutonga, kune akakosha emhando yekuongorora uye kutonga, ikozvino tinoti kupisa kurapwa kweakati wandei ekudzora mapoinzi.
01 Decarburization uye carburization
Kuti utarise panguva yechoto kabhoni kutonga, unogona kushandisa spark kuona uye Rockwell kuomarara bvunzo ye decarburization uye carburization yekutanga kutonga.
Spark test.
Izvo zvikamu zvakadzimwa, muguyo kubva kumusoro uye mukati zvinyoro nyoro kugaya kutonga kwepamusoro uye moyo weiyo kabhoni huwandu hunoenderana. Asi izvi zvinoda kuti mushandisi ave nehunyanzvi hwekuita uye twumoto kuti aone kugona.
Rockwell kuomarara bvunzo.
Inoitwa padivi rehexagonal bhaudhi. Kutanga zvikamu zvakaomeswa zvendege ine hexagonal ine sandpaper yakakwenenzverwa zvinyoronyoro, yakayera kuoma kwekutanga kweRockwell. Zvino ichi pamusoro mujecha kukuya kure anenge 0.5mm, uye ipapo kuyera Rockwell kuoma.
Kana kuomarara ukoshi hwenguva mbiri dzakafanana, kuti kana decarburization, kana carburization.
Kana iyo yekare kuomarara yakadzikira pane yekupedzisira kuomarara, zvinoreva kuti iyo nzvimbo yakabviswa decarburized.
The aimbova kuoma kwakakwirira kupfuura ekupedzisira kuoma, kuti pamusoro carburization.
Kazhinji, iwo maviri kuomarara musiyano we5HRC kana zvishoma, neiyo metallographic nzira kana microhardness nzira, zvikamu zve decarburization kana carburization zviri mukati mechikamu chekufanirwa.
02 Kuoma nesimba
Muiyo threaded fastener bvunzo, haigone kungoenderana nekuoma kukosha kwebhuku rakakodzera, rinoshandurwa kuita kukosha kwesimba. Pane kuomarara chinhu pakati.
Kazhinji, kuoma kwezvinhu zvakanaka, kuomarara kwechikamu chechikamu chescrew chikamu chinogona kugoverwa zvakafanana, chero bedzi kuomarara kuchikodzera, kusimba uye kuvimbisa kuti kushushikana kunogona kuitawo zvinodiwa;
Apo kuomeswa kwezvinhu kwakashata, kunyange maererano nechikamu chakatemwa checheki, kuoma kunokodzera, asi simba uye kuvimbiswa kushushikana kazhinji hazviiti zvinodiwa. Kunyanya apo kuoma kwepamusoro kunotarisana nemuganhu wepasi, kuitira kuti udzore simba uye vimbiso yekushungurudzika muhutano hwakakodzera, kazhinji inovandudza kukosha kwepamusoro kwekuoma.
03Kudzoreredza bvunzo
Kudzoreredza bvunzo kunogona kutarisa kudzima kuomarara hakuna kukwana, nekudzikira kwakadzika tembiricha kuti isasvike kune yakatsanangurwa kuomarara rudzi rwekushanda kwakashata, kuve nechokwadi chekuti yakazara mekiniki zvimiro zvezvikamu.
Kunyanya yakaderera kabhoni martensitic simbi yekugadzira ma threaded fasteners, yakaderera tembiricha kudzikisira, kunyangwe zvimwe zvemuchina zvivakwa zvinogona kusangana nezvinodiwa, asi kuyerwa kwekushushikana kwakavimbiswa, iyo yakasara elongation inoshanduka yakakura kwazvo, yakakura kwazvo kupfuura 12.5um, uye mune mamwe mamiriro ekushandiswa. chichava chiitiko chekutsemuka kamwe kamwe, mune dzimwe mota uye kuvakwa kwemabhaudhi, yakaonekwa mune chiitiko chekuputsika kamwe kamwe.
Kana yakaderera tembiricha tembiricha tembiricha, anogona kuderedza pamusoro chiitiko, asi yakaderera kabhoni martensitic simbi kugadzira 10.9 giredhi mabhaudhi, anofanira kunyanya kungwarira.
04 Kuongororwa kwehydrogen embrittlement
Iko kubatwa kwehydrogen embrittlement kunowedzera nesimba reiyo fastener. Zvisungo zvegiredhi 10.9 zvichikwira zvakaiswa kunze, masiruuru akaomeswa ega ega, masiruuru ane mawashi esimbi akaomeswa, nezvimwewo zvinofanira kubviswa hydrogen mushure mekuputirwa.
Dehydrogenation kurapwa kazhinji muchoto kana muchoto chinopisa, inobata pa190 ~ 230.℃kweanopfuura 4h, kuitira kuti hydrogen diffusion kunze.
"Simbi ichiri kuda kuoma kwayo!" Hazvina mhosva kuti mamiriro emusika anoshanduka sei, kunatsa nzira yekugadzira zvakare imwe yenzira dzinoshanda dzekudzivisa njodzi.
Muchitsinhanho chekupisa kupisa maitiro, pasina mubvunzo zvakakosha kuita basa rakanaka munzvimbo dzakakosha dzekudzora, inova chimwe chezvinhu izvo zvese zvakanaka fastener kupisa kupisa bhizinesi rinofanira kuita zvakanaka.
Nguva yekutumira: Jan-17-2024