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 nokugqoka okuphezulu kanye nezakhiwo ezinhle ezibanzi zemishini kwenza insimbi ye-Cr12MoV ye-Jinbaicheng ifaneleke kakhulu ukukhiqiza isikhunta esihlukahlukene esine-cross-section enkulu, ijamo eliyinkimbinkimbi, futhi imelane nemithelela emikhulu, kanye namathuluzi ahlukahlukene okunyathela abandayo ngaphansi kwezimo ezinzima zokusebenza, njengokubhoboza kufa, ukusika kuyafa, ukugoqa kuyafa, njll. 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-cold extrusion kungafinyelelwa ngokushelela.
Ukucaciswa kwe-annealing ye-isothermal spheroidizing annealing: 850-870 ℃ × amahora angu-3-4, ipholile esithandweni ukuya ku-740-760 ℃ × amahora angu-4-5 wokwelashwa kwe-isothermal, ngobulukhuni bokupholisa komoya ≤ 241HBW, izinga lokushisa elingcono kakhulu le-eutectic ℃, i-eutectic ℃ isothermal isothermal isothermal 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, ukupholisa kancane kuya ku-500-600 ℃, umoya opholile ngemva kokupholisa 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