Ubumenyi bwikibaho cyo gutobora impande zo gutoranya imiyoboro idafite kashe

Kujugunya muri zone igoramye cyangwa igororotse nabyo bizatera ikibazo cyo gucamo inkombe mugihe cyo guhindura imyandaumuyoboro udafite kashe.

0Cr15mm9Cu2nin na 0Cr17Mm6ni4Cu2N ibyuma bitagira umuyonga ni ibyiciro 200 bya austenitis ibyuma bitagira umuyonga, bitandukanye nibyiciro 200 gakondo hamwe na 300 bya austenitikeibyuma.Ubu bwoko200ibyuma bitagira umuyongaikunda guhanuka kumeneka, hejuru yubuso, Ikibazo cyubwiza bubi bwububiko bwangiritse.Mubikorwa nyabyo bishyushye, ubwoko bubiri bwibyuma bifata imirongo 200 yo gushyushya imirongo, kandi ubushyuhe bwitanura bugenzurwa kuri 1215-1230C.Sisitemu yumuriro ushyira mubikorwa icyiciro cya kabiri cya mudasobwa "Rough Rolling Regulations" na "Kurangiza Rolling Regulations".800-1020C.Kwerekeza kubikorwa nyabyo bishyushye byo gutoragura bibiriumuyoboro udafite kashe.Amakuru yuyu munsi yumuryango wa pipe kare: ukoresheje uburyo bwo gutunganya AOD + LF kugirango ubyare 0Cr15Mm9Cu2Nn na 0Cr17I6ni4Cu2N gutoranya bitari imitsi ikomeza guterana nabi bikomeje guterana binyuze muburyo bwo guhanagura bikomeje, ubunini bwambukiranya ibice bikomeza guterwa nabi ni 220m1260m.Igice kinini cya% cyerekanwe kumeza.Microstructure ya shell mbi mubwimbye butandukanye bwa 0Cr15m9Cu2Nn acide-yogejwe idafite imitsi ikomeza gutera, nkuko bigaragara ku gishushanyo, ihuye nubujyakuzimu bwibishishwa bibi.Iyo ibintu bidasanzwe bibaye hamwe nubushyuhe bwuruhande rwa casting binanirwa kugabanuka kurwego rwo hasi rwubushyuhe.Microstructure kuri 15 na 25m.Imiterere ya microstructure hamwe nubunini bwingano ya 20g yumuvuduko ukabije wa boiler iziyongera hamwe nubujyakuzimu bwibishishwa.Impinduka, ariko werekane itandukaniro runaka.Ku gishishwa cyimbitse d0m, microstructure ni cyane cyane ubwoko bwa skeleton yo mu bwoko bwa dendrite, kandi intera yibanze na kabiri ya dendrite ni nto.Kuri d5mm, ahanini ni imiterere ya dendrite.

Umwanya wa Dendrite ni munini.Kuri d> 15mn, dendrite isa ninzoka, ariko kuri d25m, ahanini ni kristu ya selile.Microstructure ya Cr17Im6ni4Cu2N ya kare ya kaburimbo ikomeza guteramo icyapa ku gishushanyo 1 irerekana ko guhora utera ibishishwa bibi muburyo bwa dendrite.Nubwo hari itandukaniro muri morphologie ya dendrite, imiterere yacyo igizwe ahanini na materique ya austenite yumukara, na ferrite yumukara.Kimwe na 0Cr15Mn9Cu2Nin kare ya kare, uko ubujyakuzimu bwikigero bwiyongera, intera yibanze na kabiri ya dendrite igenda yiyongera buhoro buhoro, kandi imiterere ya dendrite ihinduka kuva skeleti ikaza inyo., imyitwarire ya plastike mugikorwa cyo guhindura icyiciro cya martensitike mu miyoboro y’ibyuma idashobora kwihanganira kwambara yasesenguwe mu buryo bw'igeragezwa, kandi ingano ya austenite hamwe n’amategeko agenga imikurire y’ingano ya austenite, icyerekezo cya martensite, plastike yo guhindura ibyiciro, Ingaruka zo guhangayika na morfologiya ku miterere yubukanishi y'imyenda idashobora kwangirika.Ukurikije ubushyuhe 1010 austenitisation 15mir, itangiriro ryubushyuhe bwa s hamwe nubushyuhe bwanyuma ㎡ bwimpinduka ya martensitike yiyongera hamwe no kwiyongera kwubushyuhe bwa austenitisation, hamwe nibipimo mubyiciro byo guhindura icyiciro cya plastike yuburyo bwa plastike idashobora kwangirika hamwe no kwiyongera hamwe kwiyongera guhangayitse.Iyo ubushyuhe bwa austenitisation buri munsi ya 1050C, imikurire yintete yerekana inzira isanzwe yo gukura.Hamwe no kwiyongera kwa austenitisation, ibyuma bizenguruka s byiyongera.-3500 simulator yumuriro, imyitwarire ya plastike yumuringoti wibyuma bidashobora kwangirika mugihe cyimihindagurikire ya martensitike yarasesenguwe mubigeragezo, maze ingano yubunini bwa austenite hamwe n amategeko yayo yo gukura ingano ya austenite yarizwe, hamwe na martensite Ingaruka yicyerekezo, plastike ihinduka, guhangayikishwa na morphologie kumiterere yubukanishi bwimyenda idashobora kwangirika.Mugihe cya 1010 austenitisation muminota 15, itangiriro ryubushyuhe bwa s nubuso bwubushyuhe bwanyuma ㎡ bwimpinduka ya martensitike yiyongera hamwe no kwiyongera kwubushyuhe bwa austenitisation, hamwe na parameter K muburyo bwo guhinduranya icyiciro cya plastike yicyuma cyihanganira ibyuma byangiza ibyuma byiyongera hamwe guhangayika.Iyo ubushyuhe bwo kugabanuka buri munsi ya 1050C, imikurire yintete yerekana inzira isanzwe yo gukura.Mugihe igihe cyo kongera igihe cyiyongera, Ariyongera, kandi B-icyiciro cyo guhinduka kigabanijwemo imbibi.Nucleation no gukura kwicyiciro kandi Hariho ibyiciro bibiri bya nucleation no gukura kwa Widmanite a.icyiciro.Iyo igipimo cyo gukonjesha cyiyongereye kuva 0.1C / s kugeza kuri 150C / s, inzira yo guhindura icyiciro cya B + a na + iboneka cyane muri Ti-55.Ibinyampeke mu miyoboro idashobora kwihanganira kwambara irashobora gukomeza kuba imwe kandi ntoya, kandi martensite Fine coherent complex karbide yaguye hejuru.Ukoresheje microscope ya elegitoronike, gusikana microscope ya electron, x-ray diffractometer hamwe nuburyo bwa electrochemicique yiga microstructure hamwe na electrochemicique yumutungo wibyuma bidashobora kwangirika mubyuma bitandukanye muri leta zitandukanye nka reta ya reta, leta ihuriweho, hamwe na leta yimodoka, hamwe na electron probe EPM The morphologie hamwe nibigize imvura nyamukuru mumiyoboro idashobora kwangirika yometse kuri 150-300C yakozweho ubushakashatsi nisesengura ryingufu.