42CrMo ipayipi lensimbi engenamthungookwensimbi enamandla aphezulu kakhulu, enamandla amakhulu nokuqina, ukuqina okuhle, akukho ukuqina okusobala okushisayo, umkhawulo wokukhathala okuphezulu kanye nokumelana nomthelela omningi ngemva kokucisha nokushisa, kanye nokuqina komthelela wezinga lokushisa eliphansi.
Insimbi ifanele ukukhiqiza isikhunta sepulasitiki esikhulu nesiphakathi esidinga amandla athile nokuqina.Uhlobo lwayo lwe-ISO oluhambisanayo: i-42CrMo4 ihambisana nohlobo lwaseJapan: i-scm440 ihambisana nomkhiqizo waseJalimane: i-42CrMo4 cishe ihambelana nomkhiqizo waseMelika: izici ezingama-4140 kanye nobubanzi bokusebenza: amandla aphezulu, ukuqina okuphezulu, ukuqina okuhle, ukuguqulwa okuncane ngesikhathi sokucisha, namandla aphezulu okukhasa futhi amandla okukhuthazela ekushiseni okuphezulu.Isetshenziselwa ukwenza ama-forging anamandla aphakeme futhi anengxenye enkulu ecishiwe futhi eqinile kunensimbi engu-35CrMo, njengamagiya amakhulu okudonsa kwesitimela, amagiya adlulisa ama-supercharger, amashafu angemuva, izinduku zokuxhuma neziqeshana zasentwasahlobo ezinomthwalo omkhulu, amalunga amapayipi okubhola nokudoba. amathuluzi emithombo ejulile kawoyela engaphansi kuka-2000m, kanye nezibunjwa zemishini yokugoba.
Ukwakheka kwamakhemikhali kwepayipi lensimbi elingenamthungo le-42CrMo: c: 0.38% - 0.45%, si: 0.17% - 0.37%, mn: 0.50% - 0.80%, cr: 0.90% - 1.20%, mo: 0.15% - 0.25%, Ni 0.25% 0.030%, P ≤ 0.030%, s ≤ 0.030%
Indima yezinto ezihlukahlukene zamakhemikhali kumapayipi ensimbi:
Ikhabhoni (c):ensimbi, ukuphakama kwekhabhoni ephezulu, amandla aphezulu nobulukhuni bensimbi, kodwa ipulasitiki nokuqina kuzoncishiswa;Ngokuphambene nalokho, i-carbon content ephansi, i-plasticity ephezulu kanye nokuqina kwensimbi, futhi amandla ayo kanye nobunzima bayo nakho kuzoncishiswa.
I-Silicon (SI):yengezwe ensimbi ye-carbon evamile njenge-deoxidizer.Inani elifanele le-silicon lingathuthukisa amandla ensimbi ngaphandle kwemiphumela emibi kakhulu kupulasitiki, ukuqina komthelela, ukusebenza kokugoba okubandayo kanye nokushisela.Ngokuvamile, okuqukethwe kwe-silicon yensimbi ebulewe kungu-0.10% - 0.30%, futhi okuqukethwe okuphezulu kakhulu (kufika ku-1%) kuzonciphisa ipulasitiki, ukuqina komthelela, ukumelana nokugqwala kanye nokushisela kwensimbi.
I-Manganese (MN):iyi-deoxidizer ebuthakathaka.Inani elifanele le-manganese lingathuthukisa ngempumelelo amandla ensimbi, lisuse ithonya lesulphur nomoya-mpilo ku-hot brittleness yensimbi, lithuthukise ukusebenza okushisayo kwensimbi, futhi lithuthukise ukuthambekela kokubola okubandayo kwensimbi, ngaphandle kokunciphisa ngokuphawulekayo ipulasitiki nomthelela. ukuqina kwensimbi.Okuqukethwe kwe-manganese ku-carbon steel evamile cishe ku-0.3% - 0.8%.Okuqukethwe okuphezulu kakhulu (kufika ku-1.0% - 1.5%) kwenza insimbi ibe brittle futhi ibe nzima, futhi kunciphisa ukumelana nokugqwala kanye nokushisela kwensimbi.
I-Chromium (CR):ingathuthukisa amandla nobulukhuni be-carbon steel esimweni sokugoqa.Yehlisa ubude nokwehliswa kwendawo.Uma okuqukethwe kwe-chromium kudlula u-15%, amandla nobulukhuni kuzokwehla, futhi ubude nokwehliswa kwendawo kuzokhuphuka ngokuhambisanayo.Izingxenye eziqukethe insimbi ye-chromium kulula ukuthola ikhwalithi ephezulu yokucubungula indawo ngemuva kokugaya.
Umsebenzi oyinhloko we-chromium kunsimbi yesakhiwo ecishiwe futhi epholile ukuthuthukisa ukuqina.Ngemuva kokucisha kanye nokushisa, insimbi inezinto ezingcono eziphelele zemishini, futhi i-chromium equkethe i-carbides ingakhiwa ngensimbi ye-carburized, ukuze kuthuthukiswe ukumelana nokugqokwa kwendawo ebonakalayo.I-Chromium ingenye yezinto ezibalulekile ensimbini engagqwali, ethuthukisa ngokuyinhloko ukuvimbela ukugqwala, ukuqina nokumelana nokugqokwa kwensimbi.
I-Molybdenum (MO):I-molybdenum ingakwazi ukucwenga okusanhlamvu kwensimbi, ithuthukise ukuqina namandla ashisayo, futhi igcine amandla anele kanye nokumelana nokunwabuleka ekushiseni okuphezulu (ingcindezi yesikhathi eside kanye nokuguqulwa ekushiseni okuphezulu, okubizwa ngokuthi i-creep).Ukwengeza i-molybdenum ensimbi yesakhiwo kungathuthukisa izakhiwo zemishini.Ingase futhi ivimbele ukubola kwensimbi ye-alloy okubangelwa umlilo.
Isibabule:isici esiyingozi.Kuzobangela ukushisa okushisayo kwensimbi futhi kunciphise ipulasitiki, ukuqina komthelela, amandla okukhathala kanye nokumelana nokugqwala kwensimbi.Okuqukethwe kwesibabule sensimbi yokwakhiwa okujwayelekile akufanele kudlule i-0.055%, futhi akufanele kudlule i-0.050% ezakhiweni ezishiselwe.Phosphorus: into eyingozi.Nakuba ingathuthukisa amandla nokumelana nokugqwala, inganciphisa kakhulu ipulasitiki, ukuqina komthelela, ukusebenza kokugoba okubandayo kanye nokushisela, ikakhulukazi ukugqama okubandayo ekushiseni okuphansi.Okuqukethwe kufanele kulawulwe ngokuqinile, ngokuvamile kungabi ngaphezu kuka-0.050%, futhi kungabi ngaphezu kuka-0.045% ezakhiweni ezishiselwe.Umoya-mpilo: into eyingozi.Banga i-brittleness eshisayo.Ngokuvamile, okuqukethwe kuyadingeka ukuthi kube ngaphansi kuka-0.05%.I-nitrogen: ingaqinisa insimbi, kodwa inciphise kakhulu ipulasitiki, ukuqina, ukushisela kanye nezakhiwo ezibandayo zokugoba zensimbi, futhi ikhulise ukuguga kanye nokubanda okubandayo.Ngokuvamile, okuqukethwe kudingeka ukuthi kube ngaphansi kuka-0.008%.
Isikhathi sokuthumela: Aug-11-2022