Ⅰ-Kuyini i-Cr12MoV Cold Working Die Steel
Insimbi esebenza ngokubandayo ye-Cr12MoV ekhiqizwa yi-zhongao ingeyesigaba sensimbi yamathuluzi e-micro deformation engagugi kakhulu, ebonakala ngokumelana nokuguguleka okuphezulu, ukuqina, ukuguqulwa okuncane, ukuzinza okuphezulu kokushisa, amandla aphezulu okugoba, nezinye izakhiwo. Ingeyesibili kuphela ngemuva kwensimbi enesivinini esikhulu futhi iyinto ebalulekile yokunyathela, ukubanda, nezinye izinto. Insimbi ye-Cr12MoV iyinsimbi ye-carbon molybdenum ledeburite enokuqukethwe okuphansi kwekhabhoni kunensimbi ye-Crl2. I-Molybdenum ne-vanadium zengezwa ukuthuthukisa ukusebenza okushisayo kokusebenza, ukuqina komthelela kanye nokusatshalaliswa kwe-carbide yensimbi. Insimbi ye-Cr12MoV inekuqukethwe okuphansi kwekhabhoni kunensimbi ye-Cr12 die. Ukwengezwa kwezinto ezintsha ze-alloy kuthuthukisa isimo se-carbide engalingani. Ngaphezu kwalokho, i-molybdenum ne-molybdenum kunganciphisa ukuhlukaniswa kwe-carbide futhi kuthuthukise ukuqina. I-Vanadium ne-vanadium zingacwenga okusanhlamvu futhi zandise ukuqina, Ngakho-ke, insimbi yesikhunta ye-zhongao's Cr12MoV inokuqina okuphezulu, enesigaba esingaphansi kuka-400mm esingacinywa ngokuphelele, futhi isakwazi ukugcina ubulukhuni obuhle kanye nokumelana nokuguguleka ku-300-400 ℃. Ngaphandle kwalokho, insimbi yesikhunta ye-zhongao's Cr12MoV inokuqina okungcono kunezinye izinto zezinga elifanayo emakethe evamile, futhi amathuba okushintsha kwevolumu ngesikhathi sokucinywa ancishisiwe kakhulu. Ngakho-ke, ukumelana kwayo nokuguguleka okuphezulu kanye nezakhiwo ezinhle zemishini eziphelele kwenza insimbi yesikhunta ye-Jinbaicheng's Cr12MoV ifaneleke kakhulu ekukhiqizeni isikhunta ezahlukahlukene ezinesigaba esikhulu esiphambeneyo, isimo esiyinkimbinkimbi, futhi imelane nemiphumela emikhulu, kanye namathuluzi ahlukahlukene okunyathela abandayo ngaphansi kwezimo zokusebenza ezinzima, njenge-punching dies, trimming dies, rolling dies, njll. I-steel plate deep drawing die, i-circular saw, amathuluzi ajwayelekile namathuluzi okulinganisa, i-thread rolling die, njll.
Ⅱ-Isiqondiso Sokusetshenziswa se-Cr12MoV Cold Working Die Steel
① I-Cr12MoV ingasetshenziswa ukwenza izimo eziyinkimbinkimbi zamabhulokhi aqondile, aqondile, kanye nokufaka ukuze kufakwe izikhunta ezinobukhulu bezinto>3mm. Kunconywa ukuthi kube nobunzima obungu-58~62HRC lapho kwenziwa izikhunta eziqondile kanye no-60~64HRC lapho kwenziwa izikhunta eziqondile.
② Ukuze kukhiqizwe isikhunta kanye nezimbobo ezigobile ezidinga ukumelana nokuguguleka okuphezulu, kunconywa ukuthi kube nobunzima obungu-60 ~ 62HRC lapho kwenziwa isikhunta kanye no-62 ~ 64HRC lapho kwenziwa isikhunta esigobile.
③ Ukuze kukhiqizwe izikhunta ezigobile ezingagugi ezikhunta ezidwetshwe ngokujulile, kunconywa ukuthi zibe nobunzima obungu-62 ~ 64HRC.
④ Isetshenziselwa ukukhiqiza izikhunta ezigobile, izikhunta ezigobile, kanye namabhulokhi okufaka adinga ukumelana nokuguguleka okuphezulu kanye nezimo eziyinkimbinkimbi ezikhunta ezigobile. Kunconywa ukuthi kube nobunzima obungu-60-64HRC lapho kwenziwa izikhunta ezigobile, kanye no-60-64HRC lapho kwenziwa izikhunta ezigobile.
⑤ Ukuze kukhiqizwe ama-dies nama-dies abandayo ezingxenyeni ze-aluminium, kunconywa ukuthi kube nobunzima obungu-60-62HRC lapho kwenziwa ama-dies, kanye no-62-64HRC lapho kwenziwa ama-dies.
⑥ Kunconywa ukusebenzisa ubulukhuni obungu-62 ~ 64HRC ezikhumbeni ezigobile nezigobile ezisetshenziselwa ukwenza izikhumbeni zethusi ezibandayo.
⑦ Izikhunta ezigobile nezigobile ezisetshenziselwa izikhunta zensimbi ezibandayo ezikhipha umoya zinconywa ukuthi zibe nobunzima obungu-62 ~ 64HRC.
⑧ Amapuleti ensimbi entwasahlobo anengxenye yesisindo esingu-0.65% ~ 0.80% asetshenziselwa ukwakha ikhabhoni anobulukhuni obungu-37 ~ 42HRC, okunikeza isikhathi sokuphila esingafika kumjikelezo ongu-150000.
⑨ Amapuleti ensimbi yasentwasahlobo anengxenye yesisindo esingu-0.65% kuya ku-0.80% asetshenziselwa ukwakha ikhabhoni anobulukhuni obungu-37-42HRC, futhi ngokwelashwa okwengeziwe kwe-nitriding, impilo yawo yenkonzo ingafinyelela izikhathi ezingu-400000.
Ⅲ-Ukucutshungulwa kwe-Cr12MoV Cold Working Die Steel:
Imininingwane yokuthambisa isikhunta esibandayo: Vikela futhi ushise isikhunta ngama-iron filings ekushiseni okungu-760-780 ℃ amahora ayi-10, ngokupholisa isithando somlilo kanye nobunzima obungu-196HBW. Ukwakheka kwe-cold extrusion kungafinyelelwa kalula.
Imininingwane yokufakelwa kwe-annealing ejwayelekile ye-isothermal spheroidizing: 850-870 ℃ × amahora angu-3-4, epholile esithandweni somlilo kuya ku-740-760 ℃ × amahora angu-4-5 okwelashwa kwe-isothermal, ngokuqina kokupholisa komoya ≤ 241HBW, ibanga le-eutectic carbide ≤ 3, izinga lokushisa elifanele le-isothermal 740-76o ℃, kanye nesikhathi ≥ amahora angu-4-5.
Imininingwane yokufakwa kwe-spheroidizing annealing: (860 ± 10) ℃ × amahora angu-2-4, ukupholisa kwesithando ngesilinganiso sokupholisa esingu-30 ℃/ihora, (740 ± 10) ° C x amahora angu-4-6, ukupholisa kancane kancane ku-500-600 ℃ ngesithando, ukupholisa umoya ngemva kokukhipha, ubulukhuni obungu-207-255HBW.
Imininingwane ejwayelekile yokucima nokulungisa: izinga lokushisa lokucima 1000-1050 ℃, ukucima noma ukucima uwoyela, ubulukhuni 260HRC, izinga lokushisa lokulungisa 160-180, isikhathi sokulungisa amahora ama-2, noma izinga lokushisa lokulungisa 325-375 ° C, ukupholisa izikhathi ezi-2-3.
Izinga lokushisa lokucima eliphansi kanye neliphansi lokubuyisa: 950 ℃ -1040 ℃, izinga lokushisa lokupholisa licishe libe ngu-200 ℃, izinga lokushisa lesibili.
Izinga lokushisa lokucima eliphezulu kanye nokubuyisa okuphezulu: 1050-1100 ℃, izinga lokushisa lokucindezela licishe libe ngu-520 ℃, ukucindezela kwesibili. Indlela yesibili yokuqinisa esetshenziselwa ukucima okuphezulu kanye nokuvuselela okuphezulu ithuthukisa ubulukhuni, kodwa okusanhlamvu kuzokhula.
Ukwelashwa nge-cryogenic: Insimbi ye-Cr12MoV idlula ekwelashweni nge-cryogenic, okungadala ama-carbide e-ultrafine ahlakazekile kakhulu avela ku-martensite ecinyiwe, bese lawa ma-carbide e-ultrafine angaguqulwa abe ama-carbide ngemva kokushisa okuphansi okungu-200 ℃. I-martensite engenalo ukwelashwa nge-cryogenic idala inani elincane le-carbide kwezinye izindawo zasendaweni ngemva komlilo ophansi ojikelezayo.
I-zhongao isebenzisa indlela yokwelapha ukushisa kwamakhemikhali okushisa okuphansi, egcina ubulukhuni obuphezulu kanye nokumelana nokuguguleka kwensimbi ye-Cr12MoV. Izendlalelo ezintathu ezivame ukusetshenziswa kakhulu zokwelapha ukushisa kwamakhemikhali okushisa okuphansi, okungukuthi i-ion nitriding, i-gas nitrocarburizing, kanye ne-salt bath sulfur cyanide co nitriding, zinokumelana okukhulu nokunamathela, kanti i-salt bath sulfur cyanide co nitriding iyona engcono kakhulu.
Isikhathi senkonzo yedayi yokudweba yezitsha zensimbi engagqwali ze-Cr12MoV ze-zhongao, ngemuva kokwelashwa nge-nitrocarburization yegesi, sifinyelela izingcezu ezingaphezu kuka-30000, okungaphezu kokuphindwe kayishumi kunezibunjwa ezifanayo eziphathwa ngokucisha nokushisa okuvamile.
Isikhathi sokuthunyelwe: Meyi-23-2024