42CrMo igwe anaghị agba ncharabụ nke ultra-high ike ígwè, na elu ike na siri ike, ezi hardenability, ọ dịghị doro anya tempering brittleness, elu ike ọgwụgwụ na multi mmetụta nguzogide mgbe quenching na tempering, na ezi ala-okpomọkụ mmetụta siri ike.
Nchara ahụ dabara adaba maka ịmepụta nnukwu ihe eji eme plastik na ọkara na-achọ ụfọdụ ike na ike siri ike.Ya kwekọrọ ekwekọ ISO ika: 42CrMo4 kwekọrọ na Japanese ika: scm440 kwekọrọ German ika: 42CrMo4 mkpokọta kwekọrọ American ika: 4140 àgwà na akporo nke ngwa: elu ike, elu hardenability, ezi ike, obere nrụrụ n'oge quenching, na elu creep ike na ike ntachi obi na oke okpomọkụ.A na-eji ya na-emepụta forgings nwere ike dị elu na nnukwu agbanyụ ọkụ na nke na-ekpo ọkụ karịa 35CrMo ígwè, dị ka nnukwu ngwo maka traction locomotive, supercharger nnyefe gia, azụ ogwe, njikọ njikọ na mkpachị mmiri nwere nnukwu ibu, na-egwupụta nkwonkwo ọkpọkọ na ịkụ azụ. ngwá ọrụ maka olulu mmiri miri emi n'okpuru 2000m, na ihe ọkpụkpụ maka igwe na-ehulata.
Ngwakọta kemịkalụ nke 42CrMo enweghị nkebi ígwè ọkpọkọ: 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%
Ọrụ nke kemịkalụ dị iche iche na ọkpọkọ ígwè:
Carbon (c):na ígwè, ihe dị elu nke carbon carbon, nke dị elu na ike na ike nke ígwè, ma plasticity na ike ga-ebelata;N'ụzọ megidere nke ahụ, ka carbon dị ala, nke dị elu nke plasticity na siri ike nke ígwè, na ike na ike ya ga-ebelata.
Silicon (SI):agbakwunyere na ígwè carbon nkịtị dị ka deoxidizer.Ọnụ ego silicon nke ọma nwere ike imeziwanye ike nke ígwè na-enweghị mmetụta ọjọọ dị na plasticity, mmetụta siri ike, arụmọrụ na-ehulata oyi na weldability.N'ozuzu, ọdịnaya silicon nke ígwè e gburu bụ 0.10% - 0.30%, na nnukwu ọdịnaya (ruo 1%) ga-ebelata plasticity, mmetụta siri ike, nchara nchara na weldability nke ígwè.
Manganese (MN):ọ bụ deoxidizer adịghị ike.Ọnụ ego manganese kwesịrị ekwesị nwere ike imeziwanye ike nke ígwè n'ụzọ dị irè, wepụ mmetụta nke sọlfọ na oxygen na ọkụ na-ekpo ọkụ nke ígwè, melite ọrụ ọkụ nke ígwè, ma melite ọdịdị nchara oyi nke ígwè, na-enweghị ibelata plasticity na mmetụta. ike nke ígwè.Ọdịnaya nke manganese na nkịtị carbon ígwè bụ ihe dịka 0.3% - 0.8%.Ọdịnaya dị elu (ruo 1.0% - 1.5%) na-eme ka ígwè ahụ sie ike ma sie ike, ma na-ebelata nchara nchara na weldability nke ígwè.
Chromium (CR):ọ nwere ike melite ike na ike nke carbon ígwè na mpịakọta steeti.Belata elongation na mbelata nke mpaghara.Mgbe ọdịnaya chromium gafere 15%, ike na ike ga-ebelata, elongation na mbelata nke mpaghara ga-abawanye n'otu aka ahụ.Akụkụ ndị nwere ígwè chromium dị mfe iji nweta ogo nhazi elu dị elu mgbe egweri.
Ọrụ bụ isi nke chromium n'ime nchara arụrụ arụ na arụrụ arụ bụ ime ka ike sie ike.Mgbe quenching na tempering, ígwè nwere mma keukwu n'ibu Njirimara, na chromium nwere carbides nwere ike kpụrụ na carburized ígwè, ka mma eyi iguzogide nke ihe elu.Chromium bụ otu n'ime ihe ndị dị mkpa na igwe anaghị agba nchara, nke na-eme ka mgbochi nchara, ike siri ike na iyi nguzogide ígwè.
Molybdenum (MO):molybdenum nwere ike imezi ọka nke ígwè, melite hardability na thermal ike, ma nọgide na-enwe ike zuru ezu na nguzogide na-akpụ akpụ na okpomọkụ dị elu (nrụgide ogologo oge na nrụrụ na okpomọkụ dị elu, nke a na-akpọ creep).Ịtinye molybdenum na ígwè arụpụtara nwere ike imeziwanye ihe arụrụ arụ.Ọ nwekwara ike igbochi nbibi nke ígwè alloy nke ọkụ kpatara.
sọlfọ:mmewere na-emerụ ahụ.Ọ ga-eme ka nchara na-ekpo ọkụ na-ekpo ọkụ ma belata plasticity, mmetụta siri ike, ike ike ọgwụgwụ na nchara nchara nke ígwè.Ọdịnaya sọlfọ nke ígwè maka ihe owuwu n'ozuzu agaghị agafe 0.055%, ọ gaghịkwa agafe 0.050% n'ụdị welded.Phosphorus: ihe na-emerụ ahụ.Ọ bụ ezie na ọ nwere ike imeziwanye ike na nchara nchara, ọ nwere ike ibelata plasticity nke ọma, mmetụta siri ike, arụmọrụ na-ehulata oyi na weldability, karịsịa oyi embrittlement na obere okpomọkụ.Ekwesịrị ịchịkwa ọdịnaya ahụ nke ọma, n'ozuzu ọ bụghị karịa 0.050%, ọ bụghịkwa karịa 0.045% n'ime ụlọ welded.Oxygen: ihe na-emerụ ahụ.Na-akpata nkụja na-ekpo ọkụ.N'ozuzu, achọrọ ọdịnaya ka ọ bụrụ ihe na-erughị 0.05%.Nitrogen: ọ nwere ike iwusi ígwè, ma budata belata plasticity, siri ike, weldability na oyi ekwe Njirimara nke ígwè, na-amụba ịka nká ọchịchọ na oyi brittleness.N'ozuzu, achọrọ ọdịnaya ka ọ bụrụ ihe na-erughị 0.008%.
Oge nzipu: Ọgọst-11-2022