15CrMoG kutsimikizika kwapamwamba kwazitsulo zachitsulo
Chitoliro chachitsulo cha 15CrMoG ndi mtundu wa chitoliro chachitsulo chopanda msoko, ndipo magwiridwe ake ndi apamwamba kwambiri kuposa chitoliro wamba wopanda chitsulo. Chifukwa mtundu uwu wa chitsulo chitoliro lili kwambiri Cr, kukana kutentha, otsika kutentha kukana ndi kukana dzimbiri sizingafanane ndi mipope ena opanda msokonezo zitsulo, choncho chitoliro aloyi chimagwiritsidwa ntchito mafuta, makampani mankhwala, mphamvu yamagetsi, kukatentha ndi mafakitale ena. .
Mfundo ya kuyeretsedwa kwa haidrojeni ndi chitoliro chachitsulo cha 15CrMoG ndikuti pamene haidrojeni yoyeretsedwa imalowetsedwa kumbali imodzi ya chitoliro chachitsulo cha 15CrMoG pa 300-500 ℃, haidrojeni imalowetsedwa pakhoma la chitoliro chachitsulo cha 15CrMoG. Chifukwa cha kusowa kwa ma elekitironi awiri mu 4D electron wosanjikiza wa palladium, akhoza kupanga wosakhazikika zomangira mankhwala ndi haidrojeni (anachita pakati pa palladium ndi haidrojeni ndi reversible). Pansi pa palladium, haidrojeni imalowetsedwa kukhala ma protoni okhala ndi utali wozungulira wa 1.5 × 1015m, pomwe latisi yokhazikika ya palladium ndi 3.88 × 10-10m (pa 20 ℃), imatha kudutsa chitoliro chachitsulo cha 15CrMoG. Pansi pa zochita za palladium, mapulotoni amaphatikizana ndi ma elekitironi ndikupanganso mamolekyu a haidrojeni, omwe amatuluka mbali ina ya chitoliro chachitsulo cha 15CrMoG. Pamwamba pa chitoliro chachitsulo cha 15CrMoG, mpweya wosagwirizana sungathe kudutsa, choncho chitoliro chachitsulo cha 15CrMoG chingagwiritsidwe ntchito kupeza hydrogen yoyera kwambiri.
Ngakhale palladium ali permeability wapadera kwa haidrojeni, palladium koyera ali osauka mawotchi katundu, makutidwe ndi okosijeni mosavuta pa kutentha ndi otsika recrystallization kutentha, amene mosavuta deform ndi embrittle 15CrMoG zitsulo chitoliro. Chifukwa chake, palladium yoyera singagwiritsidwe ntchito ngati nembanemba ya permeability. Kuwonjezera kuchuluka koyenera kwa IB ndi VIII zinthu kuti palladium kupanga palladium aloyi akhoza kusintha makina zimatha palladium. 11. Chitoliro chachitsulo chosasunthika cha manja a theka la axle (gb3088-82) ndi chitsulo chapamwamba kwambiri cha carbon structural steel ndi alloy structural steel hot-sheamless steel pipe popangira galimoto yopangira manja a theka la ekisilo ndi nyumba yoyendetsera chitsulo. Mu aloyi palladium, nkhani za siliva pafupifupi 20-30%, ndi zili mu zigawo zina (monga golide, etc.) ndi zosakwana 5%.
① Ma manambala awiri omwe ali koyambirira kwa kalasi yachitsulo amayimira mpweya wa chitsulo muzitsulo, zomwe zimawonetsedwa ngati masauzande angapo a mpweya wapakati, monga 40Cr.
②Waukulu alloying zinthu mu zitsulo, kupatula munthu microalloyed zinthu, zambiri anasonyeza ochepa peresenti. Pamene pafupifupi aloyi zili zosakwana 1.5%, kawirikawiri chizindikiro chinthu ndi chizindikiro mu kalasi zitsulo, koma zomwe zili si chizindikiro. Komabe, ngati n'zosavuta kusokonezedwa pazochitika zapadera, nambala "1" imathanso kulembedwa pambuyo pa chizindikiro cha chinthu, monga kalasi yachitsulo "12CrMoV" ndi "12Cr1MoV". Zomwe zili mu chromium zakale ndi 0.4-0.6%, ndipo zotsirizirazi ndi 0.9-1.2%, ndipo zigawo zina ndizofanana. Pamene pafupifupi okhutira aloyi zinthu ndi ≥ 1.5%, ≥ 2.5%, ≥ 3.5%... Zomwe zili zidzasonyezedwa pambuyo chizindikiro chinthu, amene angasonyezedwe monga 2, 3, 4... Etc. Mwachitsanzo, 18Cr2Ni4WA.
③Vanadium V, titaniyamu Ti, aluminiyamu Al, boron B, osowa Earth RE ndi zinthu zina za alloy muzitsulo ndizomwe zili ndi ma microalloyed. Ngakhale zomwe zili ndi zochepa kwambiri, ziyenera kulembedwabe muzitsulo zachitsulo. Mwachitsanzo, mu 20mnvb zitsulo. 0.07-0.12% ya vanadium ndi 0.001-0.005% ya boron.
④ Chitsulo chapamwamba chidzadziwika ndi "a" kumapeto kwa kalasi yachitsulo kuti chisiyanitse ndi zitsulo zapamwamba kwambiri.
⑤Kwa alloy structural chitsulo chapadera, kalasi yachitsulo imatsogoleredwa ndi (kapena suffix) kuimira chizindikiro cha cholinga cha chitsulo. Mwachitsanzo, chitsulo cha 30CrMnSi cha screw riveting chimayimiridwa ngati ml30crmnsi.
Chitoliro cha aloyi ndi chitoliro chopanda msoko zimakhala ndi maubwenzi ndi kusiyana, ndipo sizingasokonezeke. Chitoliro cha aloyi ndi mtundu wa chitoliro chopanda msoko. Ngakhale sizingasakanizidwe, chitoliro chopanda msoko chimaphatikizapo chitoliro cha aloyi.
Chitoliro cha aloyi chimatanthauzidwa ngati chitoliro chachitsulo molingana ndi zinthu zopangira (ie zakuthupi). Monga momwe dzinalo likusonyezera, ndi chitoliro chopangidwa ndi aloyi; Chitoliro chopanda msoko chimatanthauzidwa molingana ndi njira yopangira chitoliro chachitsulo (msoko wopanda msoko). Chosiyana ndi chitoliro chopanda msoko ndi chitoliro chopanda msoko, kuphatikiza chitoliro chowongoka chamsoko ndi chitoliro chozungulira.
