Uhlalutyo lweepropati kunye nokwakhiwa kweekhemikhali ze-20CrMnTi ipayipi yentsimbi engenamthungo etsalwa ngokubanda

Intsimbi ye-20CrMnTi ibizwa ngokuba yintsimbi yentsimbi, kwaye iindawo ezininzi zisebenzisa i-20CrMnTi.

20CrMnTiumbhobho wentsimbi ongenamthungoinokwahlulwa ibe ziindidi ezintathu: i-cold-drawn, hot-rolled andumbhobho wentsimbi ongenamthungo oqaqambileyo oqengqelekayo, ngeemfuno ezahlukeneyo kunye neenkqubo ezahlukeneyo.Nangona kunjalo, ezinye iiyunithi zisebenzisa intsimbi ejikelezayo ukuvelisa iinxalenye ngaphandle kokuqwalasela ukutshintshwa kwemibhobho yensimbi.Ukutshintsha i-20CrMnTi umbhobho wentsimbi ongenamthungo otsalwa ngokubanda ngentsimbi eyi-20CrMbTi engqukuva akugcini nje ukusindisa izinto ezikrwada kunye neeyure zomsebenzi, kodwa kunciphisa iindleko kunye nokwandisa ukhuphiswano lwemarike.I-20CrMnTi kunye ne-30CrMnSiA imibhobho yensimbi engenamthungo ebandayo epholileyo i-carburized steels kunye nokusebenza kakuhle, ukuqina okuphezulu, i-hard and wear-resistant surface kunye ne-core core emva kokutyunjwa kwe-carburizing kunye nokucima, ukuqina kwefuthe eliphantsi lobushushu obuphantsi, i-weldability ephakathi, kunye nokusebenza kakuhle emva kokuqhelekileyo.20CrMnTiumbhobho wentsimbi ongenamthungo otsalwa ngokubandangokuqhelekileyo intsimbi ye-carbon ephantsi kunye nomxholo wekhabhoni we-0.17% - 0.24%.Isetyenziswa kakhulu kwiimoto ukwenza izixhobo zokuhambisa.Yintsimbi ye-carburized carbon, ephakathi, intsimbi ye-CrMnTi ephakathi, enokuqina okuphezulu.Ngaphantsi kwemeko yokuqinisekisa ukuqina, inamandla aphezulu kunye nokuqina, ngakumbi ubushushu obuphantsi befuthe lokuqina.20CrMnTi umphezulu carburized kunye nentsimbi lukhuni.Ukuchaneka okulungileyo, ukuguqulwa okuncinci kwiprosesa ekhethekileyo, kunye nokumelana nokudinwa okulungileyo.Injongo: iigiya, iishafti, iindawo zePiston, njl.njl. zisetyenziselwa iindawo ezahlukeneyo zeemoto kunye neenqwelomoya.

20CrMnTi umgangatho: GB/T 3077-1988

Iimpawu kunye nobungakanani bokusetyenziswa kwe20CrMnTi umbhobho wentsimbi ongenamthungo otsalwa ngokubanda:

Isetyenziselwa ukuvelisa iindawo ezibalulekileyo kunye necandelo elingaphantsi kwe-30mm elithwala isantya esiphezulu, umthwalo ophakathi okanye onzima, impembelelo kunye nokukhuhlana, njengeegiya, imisesane yegiya, i-gear shaft crossheads, njl.

Ukwakhiwa kweekhemikhali ze-20CrMnTi umbhobho wentsimbi ongenamthungo otsalwa ngokubanda (amanqaku):

Ikhabhoni C: 0.17 ～ 0.23

ISilicon Si: 0.17 ～ 0.37

IManganese uMn: 0.80 ～ 1.10

I-Sulfur S: umxholo oshiyekileyo ovumelekileyo ≤ 0.035

I-Phosphorus P: umxholo oshiyekileyo ovumelekileyo ≤ 0.035

I-Chromium Cr: 1.00 ～ 1.3020CrMnTi umbhobho wentsimbi ongenamthungo otsalwa ngokubanda

I-Nickel Ni: umxholo oshiyekileyo ovumelekileyo ≤ 0.030

I-Copper Cu: umxholo oshiyekileyo ovumelekileyo ≤ 0.030

I-Titanium Ti: 0.04-0.10

Iipropati zoomatshini ze-20CrMnTi umbhobho wentsimbi ongenamthungo otsalwa ngokubanda:

amandla okuqina σ b (MPa):≥1080(110)

isivuno samandla σ (MPa):≥835(85)

Ubude δ 5 (％):≥10

Ukuncipha kwendawo ψ (％):≥45

Amandla empembelelo Akv (J): ≥ 55

Ixabiso lokuqina kwempembelelo α kv (J/cm2):≥69(7)

Ukuqina: ≤ 217HB

Ubungakanani besampulu: ubungakanani besampula obungenanto yi-15mm

Inkcazo yonyango lobushushu kunye nesakhiwo sesinyithi se-20CrMnTi yombhobho wentsimbi ongenamthungo otsalwa ngokubanda:

Inkcazo yonyango lobushushu: ukucima: 880 ℃ okokuqala, 870 ℃ okwesibini, ukupholisa ioli;Ubushushu be-200 ℃, ukupholisa amanzi kunye nokupholisa umoya.

Umbhobho wensimbi we-20crmnti yintsimbi enzima ephakathi, enobunzima obuhle ngenxa ye-alloying ye-Cr, Mn kunye ne-Ti.Ububanzi obubalulekileyo bokucima ioli malunga ne-40mm;Emva kwe-carburizing kunye nokucima, inokumelana nokunxiba okuphezulu kunye nokuqina okuphezulu, ngakumbi ukuqina kwefuthe lobushushu obuphantsi;Intsimbi inenkqubo efanelekileyo yokugalela i-carburizing, indlela yokukhula okuziinkozo encinci, ukucima ngokuthe ngqo kunye nokuguqulwa okuncinci.Intsimbi ye-20CrMnTi ingasetyenziselwa ukuvelisa iindawo ezinzima ze-carburized kunye necandelo elingaphantsi kwe-30 ℃, kwaye inokumelana nesantya esiphezulu, umthwalo ophakathi okanye umthwalo onzima, impembelelo kunye nokukhuhlana, njengeegiya, i-gear shafts, imisesane yegiya, imisesane yomnqamlezo, i-claw clutches. , iintshulube, njl.

Ukwakhiwa kweekhemikhali ze-20crmnti ipayipi yensimbi iquka i-carbon C, i-silicon Si, i-manganese Mn, isulfure S, i-phosphorus P kunye ne-chromium Cr.Inkqubo yokuvelisa umbhobho wensimbi ye-20crmnti: intsimbi ye-carbon, ukugqiba ukuqengqeleka, unyango lobushushu obunga-oxidation (i-NBK state), uvavanyo olungenakonakala, umbhobho wensimbi udonga lwangaphakathi luxutywe ngezixhobo ezikhethekileyo kwaye luhlanjwe phantsi koxinzelelo oluphezulu, i-oyile ye-anti-rust kumbhobho wentsimbi. iphathwa uthintelo lomhlwa, kwaye izigqubuthelo kuzo zombini iziphelo zinyangwa ukuthintela uthuli.Iimpawu zentsimbi ye-20crmnti: iindonga zangaphakathi nangaphandle zombhobho wensimbi zichanekile kwaye ziphezulu, umbhobho wensimbi awunamaleko e-oxide emva kokunyangwa kobushushu, udonga lwangaphakathi lunokucoceka okuphezulu, umbhobho wensimbi uthwala uxinzelelo oluphezulu, ukugoba okubandayo akukwenzi. deform, kunye nokwandiswa kunye flattening abanazo iintanda.

Shandong Haihui Steel Co., Ltd. ivelisa abandayo rolling precision eqaqambileyo imibhobho yentsimbi engenamthungoye-GB 10 #, GB20 #, GB35 #, GB45 #, 20Cr, 40Cr, 16Mn, 35CrMo, 20CrMoTi, Gcr15.