42CrMo alloy ibyuma bikora uruganda rukora garanti yo kugurisha
Intego ya 42CrMo umuyoboro wicyuma udafite kashe: ibyuma bidasanzwe byikiraro ni "42CrMo", ibyuma bidasanzwe byo gukingira imodoka ni "42CrMo", naho ibyuma bidasanzwe byubwato ni "42CrMo". Ubu bwoko bwibyuma butezimbere imiterere yicyuma muguhindura karubone (c). Kubwibyo, ukurikije ibirimo karubone, ubu bwoko bwibyuma bushobora kugabanywamo: ibyuma bike bya karubone - ibirimo karubone muri rusange biri munsi ya 0.25%, nkibyuma 10 na 20; Icyuma giciriritse giciriritse - ibirimo karubone muri rusange biri hagati ya 0,25 ~ 0,60%, nka 35 na 45; Ibyuma byinshi bya karubone - ibirimo karubone muri rusange birenze 0,60%. Ubu bwoko bwibyuma ntabwo bukoreshwa mugukora imiyoboro yicyuma. 42CrMo ibyuma nicyuma gikomeye cyane gifite imbaraga nimbaraga zikomeye, gukomera gukomeye, nta bushyuhe bugaragara bugaragara, umunaniro mwinshi hamwe no guhangana ningaruka nyinshi nyuma yo kuzimya no kuvura ubushyuhe, hamwe nubukonje bukabije bwubushyuhe bwo hasi. 42CrMo ibyuma birakwiriye gukora inganda nini nini nini ya plastike isaba imbaraga nubukomere. Gukomera: bifatanye, 147 ~ 241hb, 42CrMo
Imbaraga zingana σ b (MPa): ≥1080 (110)
Gutanga imbaraga σ s (MPa): ≥930 (95)
Kurambura δ 5 (%): ≥12
Kugabanya agace ψ (%): ≥45
Ingaruka zingaruka Akv (J): ≥ 63
Ingaruka zo gukomera agaciro α kv (J / cm2): ≥78 (8)
Gukomera: ≤ 217hb
Kugirango uzamure ubuzima bwumurimo wurupfu kugeza inshuro zirenga 800000, uburyo bukomeye bwo kuzimya nubushyuhe bwo hasi burashobora gushyirwa mubikorwa ibyuma byabanje gukomera. Mugihe cyo kuzimya, bizashyuha kuri 500-600 ℃ mumasaha 2-4, hanyuma bigumane kuri 850-880 ℃ mugihe runaka (byibuze amasaha 2), bikonjeshwa mumavuta kugeza 50-100 ℃ hanyuma bikonjeshwa numwuka. Gukomera nyuma yo kuzimya birashobora kugera kuri 50-52hrc. Kugirango wirinde gucika, igomba guhindurwa 200 ℃ ako kanya. Nyuma yo kurakara, gukomera birashobora kugumaho hejuru ya 48hrc. Uburyo bwo kuvura umunyu utagira aho ubogamiye wa 42CrMo ibyuma. Igice cya karbide gishobora kuboneka hakoreshejwe uburyo bwo kutagira aho bubogamiye umunyu wa vanadisiyasi ya 42CrMo.
1. Carbon vanadium compound, layer ya carburized ifite imiterere imwe, gukomeza neza no guhuzagurika, uburebure bumwe, imiterere yoroheje, imiterere ya microhardness hamwe no kwihanganira kwambara cyane, hamwe nubukomere bwubuso, kwihanganira kwambara no kurwanya adhesion byateye imbere cyane.
2.Ubushobozi bwa VC muri austenite burenze ubwo muri ferrite. Kugabanuka k'ubushyuhe, VC igwa kuri ferrite, ituma amavuta akomera kandi akanonosorwa ingano, kandi ibice bivanze byerekana ubukana bwinshi. 42CrMo ibyuma ni ibya karubone ndende na chromium ledeburite ibyuma byinshi, bifite karbide nyinshi, bingana na 20%, kandi akenshi bigabanywa mu buryo butaringaniye mu mukandara cyangwa mu muyoboro, hamwe no gutandukanya bikomeye. Nyamara, kuvura ubushyuhe busanzwe biragoye guhindura amacakubiri ya karbide, bigira ingaruka zikomeye kumiterere yicyuma hamwe nubuzima bwurupfu. Imiterere nubunini bwa karbide nabyo bigira ingaruka zikomeye kumiterere yicyuma. By'umwihariko, karbide nini ityaye igira ingaruka zikomeye zo gutandukana kuri materique yicyuma kandi akenshi iba intandaro yo kuvunika umunaniro. Niyo mpamvu, birakenewe guhindura ibihimbano byicyuma kibisi, kumenagura neza karbide ya eutectic kugirango ikorwe neza kandi iringanwe, kandi imiterere ya fibre ikwirakwizwa hafi yu mwobo cyangwa idafite icyerekezo, Kugirango tunonosore imiterere yubukanishi bwicyuma .
Mugihe cyo guhimba, fagitire igomba guhungabana kandi igakurwa mubyerekezo bitandukanye inshuro nyinshi, kandi igahimbwa nuburyo "bubiri n'umucyo umwe uremereye", ni ukuvuga ko fagitire igomba gukubitwa byoroheje mugitangira kwibeshya kugirango ikumire. Irashobora gukubitwa cyane ku bushyuhe buringaniye bwa 980 ~ 1020 ℃ kugirango harebwe karbide. 42CrMo ibyuma ntabwo ari impimbano, kandi hafashwe ingamba zikomeye zo gutunganya inshuro ebyiri, ni ukuvuga, ubushyuhe bwa kabiri kuri 500 ℃ na 800 ℃ no kuvura igisubizo gikomeye kuri 1100 ~ 1150 ℃, Kuzimya amavuta ashyushye cyangwa kuzimya isothermal, ubushyuhe bukabije kuri 750 , Gushyushya kuri 960 ℃ nyuma yo gutunganya no kuvura ubushyuhe bwa nyuma nyuma yo gukonjesha amavuta birashobora kandi gutunganya karbide, impande zizengurutse impande zose no gutunganya ibinyampeke.
