Njira yolowera m'ng'anjo
Carburizing wothandizira ndi woyenera kusungunula mu ng'anjo induction, koma ntchito yeniyeni si chimodzimodzi malinga ndi zofunika ndondomeko.
(1) Mu sing'anga pafupipafupi ng'anjo kusungunuka ntchito carburizing wothandizila, malinga ndi chiŵerengero kapena zofunika ofanana mpweya ndi zinthu anawonjezera m'munsi mwa ng'anjo, mlingo kuchira akhoza kufika oposa 95%;
(2) madzi chitsulo kusungunuka ngati kuchuluka kwa mpweya ndi osakwanira kusintha mpweya nthawi, choyamba kusewera ng'anjo slag, ndiyeno kuwonjezera carburizing wothandizila, mwa Kutentha madzi chitsulo, electromagnetic yoyambitsa kapena yokumba yoyambitsa kupasuka mayamwidwe mpweya, mlingo kuchira kungakhale pafupifupi 90, ngati otsika kutentha carburizing ndondomeko, ndiye kuti, mbali ya chitsulo ndi otsika chitsulo chosungunula ndi molten chitsulo. kamodzi kuwonjezeredwa kuchitsulo chamadzimadzi, Pa nthawi yomweyi, amapanikizidwa muchitsulo chamadzimadzi ndi malipiro olimba kuti asachoke pamwamba pa chitsulo chamadzimadzi. Njira iyi imatha kuonjezera carburization ya chitsulo chamadzimadzi kuposa 1.0%.
Kugwiritsa ntchito moyenera carburizing agent mu ng'anjo yolowera
1, kugwiritsa ntchito ng'anjo yamagetsi ya 5T kapena kupitilira apo, zopangira ndi zokhazikika komanso zokhazikika, timalimbikitsa njira yowonjezera yowonjezera. Malinga ndi zofunika za carbon zili, malinga ndi chiŵerengero cha zosakaniza, ndi carburizing wothandizila ndi zitsulo mlandu ndi gulu lililonse la zinthu kuti agwirizane ng'anjo m'munsi, wosanjikiza zitsulo mlandu wosanjikiza wothandizila carburizing, mpweya mayamwidwe mlingo akhoza kufika 90% -95%, carburizing wothandizila mu kusungunuka si slag, mwinamwake zosavuta kukutidwa, kukutidwa ndi kaboni slag;
2. Mng'anjo wapakatikati wafupipafupi wa pafupifupi 3T amagwiritsidwa ntchito, ndipo zopangira ndizosakha komanso zokhazikika. Timalimbikitsa njira yowonjezera yapakati. Kachitsulo kakang'ono kachitsulo kakasungunuka kapena kasiyidwa mu ng'anjo, carburizing wothandizira amawonjezeredwa pamwamba pa chitsulo chosungunula nthawi imodzi, ndipo chitsulo chachitsulo chimawonjezeredwa nthawi yomweyo. The carburizing wothandizira amapanikizidwa mu chitsulo chosungunula, kotero kuti carburizing wothandizira ndi kwathunthu kukhudzana ndi chitsulo chosungunuka, ndi mlingo mayamwidwe kuposa 90%;
3, kugwiritsa ntchito ng'anjo yamagetsi yamagetsi yaying'ono, zopangira ndi chitsulo cha nkhumba ndi zinthu zina za carbon, timalimbikitsa kukonza bwino kwa carburizing. Pambuyo pa chitsulo / chitsulo chosungunula, sinthani zomwe zili mu carbon, zikhoza kuwonjezeredwa pamwamba pa chitsulo / chitsulo chosungunula, kupyolera muzitsulo zamakono zachitsulo (chitsulo) kapena kusonkhezera kochita kupanga kuti zisungunuke ndi kuyamwa mankhwalawo, mayamwidwe a carbon ndi pafupifupi 93%.
Kunja ng'anjo carburization njira
1. Thirani ufa wa graphite mkati mwa thumba
Graphite ufa ngati carburizing wothandizira, kuwomba mu kuchuluka kwa 40kg/t, akhoza kuyembekezera kuti mpweya zili madzi chitsulo chitsulo kuchokera 2% mpaka 3%. Pamene mpweya wa carbon mu chitsulo chamadzimadzi ukukwera pang'onopang'ono, kuchuluka kwa magwiritsidwe ntchito a carbon kunachepa. Kutentha kwachitsulo chamadzimadzi kusanachitike carburization kunali 1600 ℃, ndipo kutentha kwapakati pambuyo pa carburization kunali 1299 ℃. Graphite ufa carburization, ambiri ntchito nayitrogeni monga chonyamulira, koma mu zinthu mafakitale kupanga, wothinikizidwa mpweya ndi yabwino, ndi mpweya wothinikizidwa mpweya kuyaka kubala CO, mankhwala anachita kutentha akhoza kubweza mbali ya dontho kutentha, ndi CO kuchepetsa m'mlengalenga ndi abwino kuwongolera carburization zotsatira.
2, kugwiritsa ntchito chitsulo carburizing wothandizira
100-300 graphite ufa carburizing wothandizila akhoza kuikidwa mu phukusi, kapena kuchokera chitsulo kubwereketsa ufa ndi otaya mu, pambuyo chitsulo kunja kwa madzi analimbikitsa mokwanira, mmene ndingathere kupasuka mayamwidwe mpweya, mpweya kuchira mlingo ndi pafupifupi 50%.
Mu ntchito carburizing wothandizira ayenera kulabadira vuto
Ngati nthawi yowonjezera ya carburizing ndi yoyambirira kwambiri, ndikosavuta kuyiyika pafupi ndi pansi pa ng'anjo, ndipo cholumikizira chamoto chomwe chimamangiriridwa pakhoma la ng'anjo sichapafupi kuphatikizidwa muchitsulo chamadzimadzi. M'malo mwake, kuwonjezera nthawi mochedwa, adzataya mwayi kuwonjezera carbon, chifukwa kusungunuka, Kutentha nthawi pang'onopang'ono. Izi sizimangochedwetsa nthawi yowunikira komanso kusintha kwa mankhwala, komanso zimawononga kuwonongeka komwe kumachitika chifukwa cha kutentha kwambiri. Choncho, carburizing wothandizira kapena m'kati kuwonjezera zitsulo mlandu pang'ono ndi pang'ono kuti agwirizane.
Monga momwe zimakhalira ndi kuchuluka kwakukulu kowonjezera, zitha kuphatikizidwa ndi ng'anjo yolowera pomwe ntchito yotenthetsera chitsulo chamadzimadzi ikaphatikizidwa ndi kuganizira, kuonetsetsa kuti carburizer mu mayamwidwe achitsulo amadzimadzi nthawi ya 10Min, mbali imodzi kudzera pamagetsi oyambitsa maginito a carburizer mayamwidwe okwanira, kuonetsetsa kuti mayamwidwe. Kumbali inayi, kuchuluka kwa nayitrogeni wobweretsedwa mu carburizer kumatha kuchepetsedwa.
Osawonjezera kamodzi, kuwonjezera mu magulu, ndipo potsiriza Sungunulani gawo, kuika mbali ya otentha chitsulo (za paketi) mu thumba, ndiyeno kubwerera ku ng'anjo carburizer 1-2 zina, ndiyeno slag, kuwonjezera aloyi.
Pali mbali zingapo zofunika kuziganizira:
1. Carburizing wothandizira ndizovuta kuyamwa (popanda calcination);
2, carburizing wothandizira phulusa tinthu kugawa si yunifolomu;
3. Kujowina mochedwa;
4. Njira yolumikizirana si yolondola, ndipo kujowina kosanjikiza kumatengedwa. Pewani kalilole wachitsulo wamadzimadzi ndi slag yochulukirapo mukawonjezeredwa;
5. Yesetsani kuti musagwiritse ntchito dzimbiri.
Makhalidwe a wothandizila wapamwamba kwambiri wa carburizing
1, kukula kwa tinthu tating'onoting'ono, porosity ndi yayikulu, kuthamanga kwa mayamwidwe kumathamanga.
2. Chopangidwa ndi mankhwala abwino, kaboni wambiri, sulfure yochepa, tinthu tating'onoting'ono towononga, kuchuluka kwa mayamwidwe.
3, mankhwala graphite galasi galasi ndi zabwino, kusintha choyambirira madzi chitsulo nucleation luso. Wonjezerani chiwerengero cha nodular chitsulo tinatake tozungulira mu inoculation, ndi kuonjezera graphite phata mu ng'anjo magetsi madzi chitsulo. Yenga komanso ngakhale kugawa inki yakufa muzojambula.
4. Kuchita bwino kwambiri komanso kukhazikika.
Kusankhidwa kwa wothandizila woyenera wa carburizing kumathandizira kuchepetsa mtengo wosungunula, kukonza bwino zitsulo zosungunula ndi zoponyera, kuti chomera chosungunula, kuponyera.
Nthawi yotumiza: Dec-02-2022