Nekuzivikanwa kwezvirava mukugadzira kugadzirwa, akawanda uye akawanda carburizing agents anoshandiswa mukugadzira simbi yakakandwa.Nekudaro, vazhinji vanokanda shamwari havanzwisise mashandisirwo eakasiyana carburizing agents mune akasiyana simbi yakakandwa.Zvichienderana neanopfuura makore gumi echiitiko mugwaro rekutanga rekushandisa kutungamira kwevatengi, dhipatimendi retekinoroji reYunai rakapfupisa zvinhu zvinokanganisa chiyero chekunyura chekukanda carburizer yekukanda shamwari.

I. Kuumbwa kwesimbi yemvura

Iyo yekunyunguduka kwekabhoni mucarburizer yakakwira zvakanyanya (3 727 ℃), iyo inonyanya kunyungudutswa musimbi yemvura kuburikidza nenzira mbiri dzekunyungudika uye kuparadzira.Kunyungudika kwekabhoni musimbi yemvura ndeye: Cmax=1.3+0.25T-0.3Si-0.33P-0.45S+0.028Mn, uko T ndiyo tembiricha yesimbi yemvura (℃).

1. Kuumbwa kwesimbi yemvura.Zvinogona kuoneka kubva paequation iri pamusoro kuti Si, S uye P inoderedza kunyungudika kweC uye mwero wekunyudzwa kweiyo carburizer, nepo Mn ari zvinopesana.Iyo data yakaratidza kuti kunyudzwa kwecarburant kwakadzikira ne1 ~ 2 uye 3 ~ 4 muzana mapoinzi ega ega 0.1% kuwedzera kweC uye Si mune yemvura iron.Mwero wekutora unogona kuwedzerwa ne2% ~ 3% yega yega 1% Mn kuwedzera.Si ine pesvedzero huru, inoteverwa naMn, C naS. Naizvozvo, mukugadzirwa chaiko, C inofanira kutanga yawedzerwa uye Si inofanira kuwedzerwa gare gare.

2. Kupisa kwesimbi yemvura.Iyo yakaenzana tembiricha yesimbi yemvura (C-Si-O) ine simba guru pachiyero chekunyura.Kana tembiricha yesimbi yemvura yakakwira kupfuura tembiricha yekuenzanisa, C inopindirana neO inofarira, uye kurasikirwa kweC musimbi yemvura kunowedzera, uye mwero wekunyura unodzikira.Kana tembiricha yesimbi yemvura iri shoma pane tembiricha yekuenzanisa, kuzara kweC kunoderera, mwero wekupararira weC unoderera, uye mwero wekunyura unodzikira.Kana tembiricha yesimbi yemvura yakaenzana nekuenzana tembiricha, mwero wekunyura ndiwo wakanyanya.Iyo yakaenzana tembiricha yesimbi yemvura (C-Si-O) inosiyana nemusiyano weC uye Si.Mukugadzirwa chaiko, iyo carburant yeYu Na brand inonyanya kunyungudutswa uye yakapararira musimbi yemvura iri pasi peiyo tembiricha yakaenzana (1 150 ~ 1 370 ℃).

3. Kubvongodzwa kwesimbi yemvura kunobatsira pakuparara uye kupararira kweC, uye kunoderedza mukana wekutsva kwecarburizing agent inoyangarara pamusoro pesimbi yemvura.Iyo carburizing isati yanyungudutswa zvachose, iyo yakareba nguva yekukurudzira, inokwirisa mwero wekunyudzwa, asi kubvongodza kune simba guru pahupenyu hwemachira, asi zvakare kuwedzera kurasikirwa kweC musimbi yemvura.Nguva yakakodzera yekukurudzira inofanira kunge ipfupi sezvinobvira mushure mekuona kuti carburizer yakanyungudika zvachose.

4. Slag scraping kana zvichidikanwa kuwedzera carburizing agent mushure mekunyunguduka kwesimbi, iyo scum yevira inofanira kucheneswa sezvinobvira kudzivirira carburizing agent yakaputirwa mu slag.

Chechipiri, carburizing agent

1. Graphitized microstructure yeYunai brand carburizer.

Chidzidzo chacho chinoratidza kuti chimiro chekabhoni ndeye amorphous uye yakashongedzwa yakanyanyisa pakati peamorphous uye graphite.Mumamiriro ezvinhu akajairwa, kana tembiricha yasvika 2500 ℃ uye ikachengetedza imwe nguva, inogona kunyatso kupedzisa graphitization.Kabhoni pakushisa kwepamusoro kana mukugadzirisa kwechipiri kupisa, haisi dombo

Iyo dhigirii yegraphite kabhoni shanduko kuita graphite kabhoni inonzi dhigirii rekabhoni graphitization, inova zvakare chimwe chezvinhu zvekuyedzwa zvekabhoni microanalysis.Zvichienderana neiyo graphite crystal chimiro chedzidziso, zvinogona kuoneka kuti girafu chimiro indege yakaturikidzana inoumbwa nehexagonal kabhoni atomu plane network, uye iwo akaturikidzana akabatana nemumwe ne van der Waals simba, nekudaro achigadzira lattice crystal chimiro chinoramba chichienderera nekusingaperi. mumativi matatu-dimensional.X-ray diffraction inoshandiswa kuyera chikamu chenguva dzose hexagonal crystal shape mushure me graphitization kuyedza dhigirii regraphitization.

Graphitization degree indekisi yakakosha ye carburizing agent.Iyo yakakwirira ye graphitization haigone chete kuwedzera mwero weiyo kabhoni absorption, asi zvakare inovandudza nucleation kugona kweiyo mvura iron nekuda kweiyo homoheteronuclear mhedzisiro yechimiro chayo ine liquid iron graphite.Musiyano mukuru pakati pe graphitized carburizing agent uye isiri-graphitized carburizing agent ndeyekuti graphitized carburizing agent ine carburizing mhedzisiro uye imwe inoculation mhedzisiro.

2. Zvinoenderana nemakanika zvivakwa uye zvigadzirwa zvemhando dzakasiyana-siyana, isu tinopa yakakosha carburizing agent kune ese marudzi ekukanda nekudzora kabhoni uye akasiyana-siyana trace element indexes.

Fixed kabhoni nedota yakagadzika kabhoni ndiyo inoshanda zvikamu zve carburizing agent, iyo yakakwirira zviri nani;Madota imwe simbi kana isiri-metallic oxide, itsvina, inofanira kuva shoma sezvinobvira.Huwandu hweyakagadziriswa kabhoni uye madota mu carburizing agent ma paramita maviri akakosha eizvi uye izvo, iyo yakakwira yemukati kabhoni yakagadzika mu carburizing agent, carburizing performance yakakwira zvakare.Iyo carburizer ine yakakwira madota zviri nyore ku "coke" uye kugadzira slag layer, iyo inoparadzanisa kabhoni particles uye inoita kuti isanyunguke, nokudaro kuderedza iyo carbon absorption rate.Iyo yakakwira madota yemukati zvakare inokonzeresa huwandu hwemvura iron slag, inowedzera kushandiswa kwesimba, uye inowedzera basa rekuita mukunyungudika.Kudzora kwezvinhu zvekutevera zvakaita sesarufa nenitrogen zvakare kunowedzera kutonga kwekukanda chirema.

3. Kusarudzwa kwe granularity ye carburizing agent.

Iyo carburizer saizi idiki uye nzvimbo yekubatanidza yemvura yesimbi yekubata yakakura, chiyero chekunyura chichave chakakwira, asi zvimedu zvakapfava zviri nyore kuve oxidized, asi zvakare nyore kubviswa nemhepo inotenderera kana guruva. flow;Iyo yakanyanya particle size inofanirwa kunyungudika zvizere mu liquid iron panguva yekushanda.Kana iyo carburizing agent yakawedzerwa nechaji, saizi yechikamu inogona kuve yakakura, inokurudzirwa kuve mu 0.2 ~ 9.5mm;Kana yakawedzerwa musimbi yemvura kana isati yadhirowa simbi seyakagadziriswa, saizi yechikamu inogona kuita 0.60 ~ 4.75mm;Kana carburizing mupakeji uye yakashandiswa se pretreatment, saizi yechikamu ndeye 0.20 ~ 0.85mm;Zvimedu zvisingasviki 0.2mm hazvifanirwe kushandiswa.Saizi yechidimbu inobatanawo nehupamhi hwechoto, iyo dhayamita yevira yakakura, saizi yechikamu checarburizer inofanira kunge yakakura, uye zvinopesana.

4. Dzora iyo super pass index yeYunai brand carburizer.

Yu Nai brand carburant ine yakanyanya kusimba inopfuura, iyo chaiyo nzvimbo yekabhoni particle yakakura, kune yakakura yepasi pekupinda mukati memvura yesimbi, inomhanyisa kunyungudika uye kupararira, inogona kuvandudza kunyudzwa kwecarburant.