20Cr alloy idafite umuyoboro wicyumani imwe mu miyoboro ya polatike yubatswe hamwe nibisohoka byinshi mugihugu cyanjye kandi ifite uburyo bwinshi bwo gukoresha.Ubushinwa GB busanzwe ibyuma 20Cr;Ikiyapani JIS isanzwe yicyuma numero SCr22;Ikidage DIN gisanzwe cyuma nimero 20Cr4;Icyongereza BS gisanzwe cyuma nimero 590M17;Igifaransa NF gisanzwe ibyuma 18C3;Abanyamerika AISI / SASTM ibyuma bisanzwe nimero 5120;Umuryango mpuzamahanga wubuziranenge ISO ibyuma bisanzwe No 20Cr4.
Ibiranga
20Cr ivanga ibyumaifite ugereranije neza gukomera, imbaraga zo hagati no gukomera.Gukomera kw'amavuta kuzimya igice cya martensitike ni Φ20-Φ23mm.Nyuma yo gutwika no kuzimya ubuso bushimangira ubuvuzi, urushinge rwiza rumeze nka martensite rushyushye ruzaboneka hejuru yububiko hamwe nuburemere bwa 58-62HRC;imiterere ya karubone nkeya ya martensite izaboneka hagati hamwe nuburemere bwa 35-40HRC.Matrisa ifite imbaraga nyinshi nubukomezi, kandi irashobora Kuzuza ibisabwa kugirango imikorere ikomere cyane, imbaraga nyinshi, ubukana bukabije hamwe no kwangirika kwangirika kwimirimo ikonje.Ubusanzwe bushobora guteza imbere spheroidisation yimiterere, gutunganya ferrite nini ya proeutectoid, no kunoza imikorere yo guca ubusa.
Ikoreshwa
20Cr imiyoboro idafite ibyumazikoreshwa cyane mugukora ibice bya karburize (kuzimya amavuta) hamwe nimbaraga zingenzi zisabwa, kwambara hejuru, kwambukiranya ibice munsi ya 30mm, cyangwa imiterere igoye hamwe nuburemere buke, nka: ibikoresho byimashini zikoreshwa mumashini, ibikoresho byuma, Cams, inyo, pin piston , gufunga inzara, nibindi.;kubice bifite imiterere mito yo kuvura ubushyuhe hamwe no kwihanganira kwambara cyane, kuzimya hejuru yumurongo mwinshi bigomba gukorwa nyuma ya carburisation, nkibikoresho, shitingi.20Cr imiyoboro idafite icyerekezoirashobora kandi gukoreshwa muburyo bwazimye kandi bwitondewe kugirango ikore ibice bikora kumuvuduko mwinshi kandi bihangane ningaruka ziremereye.Irashobora kandi gukoreshwa nka carbone martensitike yo kuzimya ibyuma kugirango irusheho kongera umusaruro nimbaraga zikomeye zicyuma.
Igihe cyo kohereza: Ukuboza-19-2023