42CrMo umbhobho wentsimbi engenamthungoyeyentsimbi eyomelele kakhulu, inamandla aphezulu kunye nokuqina, ukuqina okuhle, akukho brittleness icacileyo, umda wokudinwa okuphezulu kunye nokumelana neempembelelo ezininzi emva kokucima kunye nokucaphuka, kunye nokuqina okuhle kobushushu obuphantsi.
Intsimbi ifanelekile ukuvelisa iimbumba zeplastiki ezinkulu kunye neziphakathi ezifuna amandla athile kunye nokuqina.Uphawu lwayo lwe-ISO oluhambelanayo: i-42CrMo4 ihambelana ne-brand yaseJapan: i-scm440 ihambelana ne-brand yaseJamani: i-42CrMo4 ihambelana malunga ne-brand yaseMelika: iimpawu ze-4140 kunye nobubanzi besicelo: amandla aphezulu, ukuqina okuphezulu, ukuqina okulungileyo, ukuguqulwa okuncinci ngexesha lokucima, kunye namandla anyukayo kunye amandla okunyamezela kwiqondo lokushisa eliphezulu.Isetyenziselwa ukwenza iifogi ezinamandla aphezulu kunye necandelo elikhulu elicinyiweyo nelipholileyo kune-35CrMo yentsimbi, enje ngegiya ezinkulu ze-locomotive traction, i-supercharger transmission gears, i-shafts yangasemva, ii-rods zokudibanisa kunye ne-spring clip ezinomthwalo omkhulu, i-drill mibhobho yokudibanisa kunye nokuloba. izixhobo oyile amaqula anzulu ngezantsi 2000m, kunye nokungunda koomatshini ukugoba.
Ukubunjwa kwemichiza ye-42CrMo ipayipi yentsimbi engenamthungo: 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 yeekhemikhali ezahlukeneyo kwimibhobho yentsimbi:
Ikhabhoni (c):kwintsimbi, ukuphakama kwekhabhoni, amandla aphezulu kunye nobunzima bentsimbi, kodwa iplastiki kunye nokuqina kuya kuncitshiswa;Ngokuchasene noko, i-carbon content content, iphezulu iplastiki kunye nokuqina kwentsimbi, kwaye amandla kunye nobunzima bayo buya kuncitshiswa.
Isilicon (SI):yongezwe kwintsimbi yekhabhoni eqhelekileyo njenge-deoxidizer.Isixa esifanelekileyo se-silicon sinokuphucula amandla entsimbi ngaphandle kweziphumo ezibi kakhulu kwiplastiki, ukuqina kwempembelelo, ukusebenza kokugoba okubandayo kunye ne-weldability.Ngokuqhelekileyo, umxholo we-silicon yentsimbi ebulewe yi-0.10% - 0.30%, kunye nomxholo ophezulu kakhulu (ukuya kwi-1%) uya kunciphisa iplastiki, ukuqina kwempembelelo, ukuxhathisa kwe-rust kunye ne-weldability yensimbi.
IManganese (MN):sisideksi esibuthathaka.Isixa esifanelekileyo semanganese sinokuphucula ngokufanelekileyo amandla entsimbi, ukuphelisa impembelelo yesulfure kunye neoksijini kwi-brittleness eshushu yentsimbi, ukuphucula ukusebenza okushushu kwentsimbi, kunye nokuphucula ukutyekela kwentsimbi ebandayo, ngaphandle kokunciphisa kakhulu iplastiki kunye nefuthe. ukuqina kwentsimbi.Umxholo we-manganese kwi-carbon steel eqhelekileyo malunga ne-0.3% - 0.8%.Umxholo ophezulu kakhulu (ukuya kwi-1.0% - 1.5%) wenza ukuba intsimbi ibe yintsimbi kwaye ibe nzima, kwaye iyanciphisa ukuxhathisa kwe-rust kunye ne-weldability yensimbi.
I-Chromium (CR):inokuphucula amandla kunye nobunzima bentsimbi ye-carbon kwimeko yokuqengqeleka.Ukunciphisa ubude kunye nokunciphisa indawo.Xa umxholo we-chromium udlula i-15%, amandla kunye nobunzima buya kuncipha, kwaye ukunyuka kunye nokunciphisa indawo kuya kwanda ngokuhambelanayo.Amacandelo aqulethe intsimbi yechromium kulula ukufumana umgangatho ophezulu wokusetyenzwa komphezulu emva kokusila.
Umsebenzi oyintloko we-chromium kwintsimbi yesakhiwo esicinyiweyo kunye nobushushu kukuphucula ukuqina.Emva kokucima kunye nokufudumala, intsimbi ineempawu ezingcono zomatshini, kwaye i-chromium equkethe i-carbides inokwakheka kwintsimbi ye-carburized, ukwenzela ukuba kuphuculwe ukuxhathisa kokunxiba kwendawo yezinto eziphathekayo.I-Chromium yenye yezinto ezibalulekileyo kwinsimbi engenasici, eyona nto iphucula ukukhuselwa komhlwa, ukuqina kunye nokumelana nokunxiba kwentsimbi.
I-Molybdenum (MO):I-molybdenum inokucoca ingqolowa yentsimbi, iphucule ukuqina kunye namandla ashushu, kwaye igcine amandla okwaneleyo kunye nokumelana nokunyuka kwiqondo lokushisa eliphezulu (uxinzelelo lwexesha elide kunye nokuguqulwa kwiqondo lokushisa eliphezulu, elibizwa ngokuba yi-creep).Ukongeza i-molybdenum kwintsimbi yesakhiwo inokuphucula iimpawu zomatshini.Inokuthi ithintele i-brittleness yentsimbi ye-alloy ebangelwa ngumlilo.
Isulfure:into eyingozi.Kuya kubangela i-embrittlement eshushu yentsimbi kunye nokunciphisa iplastiki, ukuqina kwempembelelo, amandla okukhathala kunye nokumelana nokugqwala kwentsimbi.Umxholo wesulfure wensimbi yokwakhiwa ngokubanzi awuyi kudlula i-0.055%, kwaye ayiyi kudlula i-0.050% kwizakhiwo ezidibeneyo.Phosphorus: Isiqalelo esiyingozi.Nangona inokuphucula amandla kunye nokuxhathisa umhlwa, inokunciphisa kakhulu iplastiki, ukuqina kwempembelelo, ukusebenza okubandayo okugoba kunye ne-weldability, ngakumbi i-embrittlement ebandayo kubushushu obuphantsi.Umxholo kufuneka ulawulwe ngokungqongqo, ngokuqhelekileyo ungabi ngaphezu kwe-0.050%, kwaye ungabi ngaphezu kwe-0.045% kwizakhiwo ezidibeneyo.Ioksijini: into eyingozi.Ibangela ukuba brittleness eshushu.Ngokubanzi, umxholo kufuneka ube ngaphantsi kwe-0.05%.I-nitrogen: inokomeleza intsimbi, kodwa inciphise kakhulu iplastiki, ukuqina, ukuwelda kunye neepropati ezibandayo zokugoba zentsimbi, kwaye yandise ukuthambekela kokuguga kunye nokubanda okubandayo.Ngokubanzi, umxholo kufuneka ube ngaphantsi kwe-0.008%.
Ixesha lokuposa: Aug-11-2022