Chidule cha njira khumi zozimitsa za makina othamanga pafupipafupi (2)

6. Njira yozimitsira pamodzi

Njira yozimitsira mophatikizira: choyamba muzimitsa chogwiritsira ntchito pansi pa Ms kuti mupeze martensite ndi gawo laling’ono la 10% ~ 30%, ndiyeno m’dera lotsika la bainite kuti mupeze martensite ndi bainite kapangidwe ka workpiece ndi gawo lalikulu. Aloyi chida zitsulo workpiece.

Zisanu ndi ziwiri, kuziziritsa chisanadze isothermal quenching njira

Pre-kuzizira isothermal quenching njira: amatchedwanso Kutentha isothermal quenching, mbali poyamba utakhazikika mu kusamba ndi kutentha m’munsi (wamkulu kuposa Ms), ndiyeno anasamutsidwa kusamba ndi kutentha kwapamwamba kuti austenite kukumana isothermal kusintha. Ndi oyenera mbali zitsulo ndi osauka hardness kapena workpieces lalikulu kuti ayenera austempered.

Eyiti, kuchedwa kuzimitsa njira yozimitsa

Njira yoziziritsira yochedwa: Zigawozo zimazimitsidwa kale mumlengalenga, madzi otentha, ndi kusamba kwa mchere mpaka kutentha pang’ono kuposa Ar3 kapena Ar1, ndiyeno kuzimitsa kamodzi kokha kumachitika. Nthawi zambiri amagwiritsidwa ntchito pazigawo zokhala ndi mawonekedwe ovuta komanso magawo omwe ali ndi kusiyana kwakukulu kwa makulidwe ndi zofunikira zazing’ono zopindika.

9. Njira yozimitsa ndi kudziletsa

Kuzimitsa kudziletsa kudziletsa njira: kutenthetsa workpieces onse kuti kukonzedwa, koma kumiza gawo limene likufunika kuumitsa (kawirikawiri ntchito mbali) mu quenching madzi kuziziritsa, ndi kutulutsa mu mlengalenga pamene unimmered mbali kutha. Kuzimitsa ndondomeko ndi sing’anga kuzirala. Njira yoziziritsira yodziletsa imagwiritsa ntchito kutentha komwe sikumakhazikika pakatikati kuti kusamutsire kumtunda kuti kutenthetse pamwamba. Nthawi zambiri amagwiritsidwa ntchito pazida zokhala ndi mphamvu monga tchipisi, nkhonya, nyundo, ndi zina.

Khumi, njira yozimitsira utsi

Njira yozimitsira ndege: Njira yozimitsira madzi akuyenda kupita kumalo ogwirira ntchito, kutuluka kwa madzi kungakhale kwakukulu kapena kochepa, kutengera kuya kwakuya kofunikira. The kutsitsi kuzimitsa njira si kupanga nthunzi filimu pamwamba pa workpiece, amene amaonetsetsa zakuya anaumitsa wosanjikiza kuposa quenching mu madzi ochiritsira. Amagwiritsidwa ntchito kwambiri kuzimitsa m’deralo.