Ⅰ-Iyini i-Cr12MoV Cold Working Die Steel
I-Cr12MoV i-cold working die steel ekhiqizwa yi-zhongao ingeyesigaba sensimbi yensimbi engagugi kakhulu, ebonakala ngokumelana nokugqokwa okuphezulu, ukuqina, ukuwohloka okuncane, ukuzinza okuphezulu kwe-thermal, amandla okugoba aphezulu, nezinye izakhiwo.Ingokwesibili ngemva kwensimbi enesivinini esikhulu futhi iyimpahla ebalulekile yokugxiviza, isihloko esibandayo, nezinye izinto.I-Cr12MoV die steel iyinsimbi ye-carbon molybdenum ledeburite enokuqukethwe kwekhabhoni ephansi kunensimbi ye-Crl2.I-Molybdenum ne-vanadium yengezwa ukuze kuthuthukiswe ukusebenza okushisayo, ukuqina komthelela kanye nokusatshalaliswa kwe-carbide yensimbi.I-Cr12MoV die steel inokuqukethwe kwekhabhoni ephansi kune-Cr12 die steel.Ukwengezwa kwezinto ezintsha ze-alloy kuthuthukisa ukwenzeka kwe-carbide engalingani.Ngaphezu kwalokho, i-molybdenum ne-molybdenum inganciphisa ukuhlukaniswa kwe-carbide futhi ithuthukise ukuqina.I-Vanadium ne-vanadium ingakwazi ukucwenga okusanhlamvu futhi ikhulise ukuqina, Ngakho-ke, insimbi ye-zhongao ye-Cr12MoV yesikhunta inokuqina okuphezulu, ene-cross-section engaphansi kuka-400mm engacinywa ngokuphelele, futhi isengakwazi ukugcina ubulukhuni obuhle futhi igqoke ukumelana ku-300-400 ℃.Ngaphandle kwalokho, insimbi yokubumba ye-zhongao ye-Cr12MoV inokuqina okungcono kunezinye izinto zebanga elifanayo emakethe evamile, futhi amathuba okushintsha umthamo ngesikhathi sokucisha ancipha kakhulu.Ngakho-ke, ukumelana kwayo nokugqokwa okuphezulu kanye nezakhiwo ezinhle ezibanzi zemishini kwenza insimbi yokubumba i-Cr12MoV ka-Jinbaicheng ifaneleke kakhulu ukukhiqiza isikhunta esihlukahlukene esinezingxenye ezinkulu eziphambanayo, ukwakheka okuyinkimbinkimbi, nokumelana nemithelela emikhulu, kanye namathuluzi ahlukahlukene okunyathela abandayo ngaphansi kwezimo ezinzima zokusebenza, njenge ukubhoboza kuyafa, ukusika kuyafa, ukugoqa kuyafa, njll. Umdwebo ojulile wepuleti lensimbi, isaha esiyindilinga, amathuluzi ajwayelekile namathuluzi okulinganisa, idayi yokugingqa intambo, njll.
Ⅱ-Isiqondiso Sokusebenza se-Cr12MoV Cold Working Die Steel
① I-Cr12MoV ingasetshenziswa ukwenza izimo eziyinkimbinkimbi ze-convex, i-concave, futhi ifake amabhulokhi wokubhoboza isikhunta esinogqinsi>3mm.Kutuswa ukuthi kube nobulukhuni obungu-58~62HRC lapho kwenziwa isikhunta esiyi-convex kanye no-60~64HRC uma kwenziwa izibunzi ezikhongolose.
② Ukuze kukhiqizwe isikhunta se-punch kanye ne-concave esidinga ukumelana nokugqokwa okuphezulu, kunconywa ukuthi kube nobulukhuni obungu-60~62HRC lapho wenza i-punch kanye ne-62~64HRC uma wenza isikhunta se-concave.
③ Ukuze kukhiqizwe isikhunta se-concave esingagugi ekubunjweni komdwebo ojulile, kuyanconywa ukuthi kube nobulukhuni obungu-62~64HRC.
④ Isetshenziselwa ukukhiqiza isikhunta esiyi-convex, isikhunta esiyi-concave, nokufaka amabhlogo adinga ukumelana nokugqokwa okuphezulu kanye nokuma okuyinkimbinkimbi ekubunjweni okugobayo.Kunconywa ukuthi ube nobulukhuni obuyi-60-64HRC lapho wenza isikhunta se-convex, kanye ne-60-64HRC uma wenza isikhunta se-concave.
⑤ Ukuze kukhiqizwe i-extrusion ebandayo iyafa futhi ifele izingxenye ze-aluminium, kunconywa ukuthi kube nobulukhuni obungu-60-62HRC lapho kwenziwa ama-dies, kanye no-62-64HRC lapho kwenziwa ukufa.
⑥ Kunconywa ukusebenzisa ubulukhuni obungu-62~64HRC ekubumbeni okuyi-convex kanye ne-concave okusetshenziselwa ukwenza isikhunta se-copper extrusion extrusion.
⑦ Isikhunta esiyi-convex kanye ne-concave esisetshenziselwa isikhunta sensimbi esibandayo se-extrusion siyanconywa ukuthi sibe nobulukhuni obungu-62~64HRC.
⑧ Amapuleti ensimbi asentwasahlobo anengxenye enkulu engu-0.65%~0.80% asetshenziselwa ukwakha ikhabhoni anobunzima obungu-37~42HRC, ahlinzeka ukuphila okufika kwemijikelezo engu-150000.
⑨ Amapuleti ensimbi asentwasahlobo anengxenye enkulu engu-0.65% kuya ku-0.80% asetshenziselwa ukwakha ikhabhoni anobunzima obungu-37-42HRC, futhi ngokwelashwa okwengeziwe kwe-nitriding, impilo yawo yesevisi ingafinyelela izikhathi ezingu-400000.
Ⅲ-Ukucubungula kwe-Cr12MoV Cold Working Die Steel:
Ukucaciswa kokuthambisa isikhunta esibandayo se-extrusion: Vikela futhi ushise isikhunta ngamafayili ensimbi ezingeni lokushisa elingu-760-780 ℃ amahora ayi-10, ngokupholisa kwesithando somlilo nobulukhuni be-196HBW.Ukwakhiwa kwe-extrusion ebandayo kungafinyelelwa ngokushelela.
Ukucaciswa kwe-annealing ye-isothermal spheroidizing annealing: 850-870 ℃ × 3-4 amahora, ipholile esithandweni ukuya ku-740-760 ℃ × amahora angu-4-5 wokwelashwa kwe-isothermal, ngobulukhuni bokupholisa komoya ≤ 241HBW, i-eutectic ℃ grade ℃ isothermal isothermal isothermal izinga lokushisa 740-76o ℃, nesikhathi ≥ amahora angu-4-5.
Ukucaciswa kwe-spheroidizing annealing: (860 ± 10) ℃ × amahora angu-2-4, ukupholisa isithando somlilo ngesilinganiso sokupholisa esingu-30 ℃/ihora, (740 ± 10) ° C x amahora angu-4-6, kuphole kancane kuya ku-500-600 ℃ isithando somlilo, ukupholisa umoya ngemva kokukhishwa, ubulukhuni 207-255HBW.
Ukucaciswa okujwayelekile kokucisha nokushisa: ukushisa okucishayo 1000-1050 ℃, ukucisha uwoyela noma ukucisha, ubulukhuni 260HRC, izinga lokushisa 160-180, isikhathi sokushisa amahora ama-2, noma izinga lokushisa elingu-325-375 ° C, ukushisa izikhathi ezingama-2-3.
Izinga lokushisa eliphansi lokucisha nokubuyisela eliphansi lokucisha: 950 ℃ -1040 ℃, izinga lokushisa elipholile lizungeze 200 ℃, ukushisa kwesibili.
Ukushisa okuphezulu kokucima kanye nokubuya okuphezulu kokucisha: 1050-1100 ℃, izinga lokushisa elipholile lizungeze 520 ℃, ukushisa kwesibili.Indlela yesibili yokuqina esetshenziselwa ukucisha okuphezulu nokugaywa kabusha okuphezulu ithuthukisa ubulukhuni, kodwa okusanhlamvu kuzokhula.
Ukwelashwa kwe-Cryogenic: Insimbi ye-Cr12MoV ithola ukwelashwa kwe-cryogenic, okunganciphisa ama-ultrafine carbides ahlakazeke kakhulu asuka ku-martensite ecishiwe, bese lawa ma-carbides e-ultrafine angaguqulwa abe ama-carbides ngemuva kokufudumeza okuphansi kwama-200 ℃.I-martensite ngaphandle kokwelashwa kwe-cryogenic idonsa kuphela inani elincane le-carbide kwezinye izindawo zendawo ngemva komlilo ophansi we-circumferential.
I-zhongao isebenzisa indlela yokwelapha ukushisa kwamakhemikhali asezingeni eliphansi, egcina ubulukhuni obuphezulu nokumelana nokugqoka kwensimbi ye-Cr12MoV.Izendlalelo ezintathu ezivame ukusetshenziswa ezisetshenziselwa ukushisa kwamakhemikhali okushisa aphansi, okuyi-ion nitriding, i-gas nitrocarburizing, nebhavu lokugeza usawoti esibabule i-cyanide co nitriding, zinomthelela omkhulu wokungaguquguquki nokunamathela, okugeza usawoti esibabule i-cyanide co nitriding ehamba phambili.
Impilo yesevisi yomdwebo iyafa ezitsheni zensimbi engagqwali ye-zhongao ye-Cr12MoV, ngemva kokwelashwa kwe-nitrocarburization yegesi, ifinyelela ngaphezu kwezingcezu ezingu-30000, okuyinde izikhathi ezingaphezu kwezingu-10 kunezibunjwa ezifanayo eziphathwa ngokucisha nokushisa okuvamile.
Isikhathi sokuthumela: May-23-2024