Ⅰ-Yintoni iCr12MoV Cold Working Die Steel
Intsimbi ye-Cr12MoV esebenza ngokubandayo eveliswa yi-zhongao ikwicandelo lentsimbi yesixhobo se-micro deformation enganyangekiyo kakhulu, ebonakaliswa kukuxhathisa ukuguguleka okuphezulu, ukuqina, ukuguquguquka okuncinci, ukuzinza okuphezulu kobushushu, amandla aphezulu okugoba, kunye nezinye iimpawu. Yesibini kuphela emva kwentsimbi ekhawulezayo kwaye sisixhobo esibalulekileyo sokunyathela, ukubanda, kunye nezinye izinto. Intsimbi ye-Cr12MoV yintsimbi ye-carbon molybdenum ledeburite enomxholo wekhabhoni ophantsi kunentsimbi ye-Crl2. I-Molybdenum kunye ne-vanadium zongezwa ukuphucula ukusebenza okushushu, ukuqina kwempembelelo kunye nokusasazwa kwekhabhoni yentsimbi. Intsimbi ye-Cr12MoV inomxholo wekhabhoni ophantsi kunentsimbi ye-Cr12 die. Ukongezwa kwezinto ezintsha ze-alloy kuphucula imeko ye-carbide engalinganiyo. Ngaphezu koko, i-molybdenum kunye ne-molybdenum zinokunciphisa ukwahlulwa kwe-carbide kwaye ziphucule ukuqina. I-Vanadium kunye ne-vanadium zinokucoca iinkozo kwaye zonyuse ukuqina, Ngenxa yoko, intsimbi yokubumba ye-Cr12MoV ka-zhongao inokuqina okuphezulu, kunye necandelo elinqamlezileyo elingaphantsi kwe-400mm elinokucima ngokupheleleyo, kwaye lisenokugcina ubunzima obuhle kunye nokumelana nokuguguleka kwi-300-400 ℃. Ngaphandle koko, intsimbi yokubumba ye-Cr12MoV ka-zhongao inokuqina okungcono kunezinye izinto zodidi olufanayo kwimarike ngokubanzi, kwaye amathuba okutshintsha komthamo ngexesha lokucinywa ancitshiswe kakhulu. Ngenxa yoko, ukumelana kwayo nokuguguleka okuphezulu kunye neempawu ezintle zoomatshini ezibanzi zenza intsimbi yokubumba ye-Cr12MoV ka-Jinbaicheng ifaneleke ngakumbi ekwenzeni ii-mold ezahlukeneyo ezinecandelo elikhulu elinqamlezileyo, imilo enzima, kwaye imelane neempembelelo ezinkulu, kunye nezixhobo ezahlukeneyo zokunyathela ezibandayo phantsi kweemeko ezinzima zokusebenza, ezifana nee-punching dies, ii-trimming dies, ii-rolling dies, njl. I-steel plate deep drawing die, i-circular saw, izixhobo eziqhelekileyo kunye nezixhobo zokulinganisa, i-thread rolling die, njl.
Isikhokelo se-Ⅱ-Isicelo seCr12MoV Cold Working Die Steel
① I-Cr12MoV ingasetyenziselwa ukwenza iimilo ezintsonkothileyo ze-convex, concave, kunye neebhloko zokufaka ukuze kufakwe ii-mold ezinobukhulu obungaphezulu kwe-3mm. Kucetyiswa ukuba ubunzima bube yi-58~62HRC xa kusenziwa ii-convex molds kunye ne-60~64HRC xa kusenziwa ii-concave molds.
② Ukuze kwenziwe ii-punch kunye nee-concave molds ezifuna ukumelana nokuguguleka okuphezulu, kucetyiswa ukuba ubunzima bube yi-60 ~ 62HRC xa kusenziwa i-punch kunye ne-62 ~ 64HRC xa kusenziwa i-concave mold.
③ Ukuze kuveliswe ii-concave molds ezingagugiyo kwii-deep drawing molds, kucetyiswa ukuba zibe nobunzima obuyi-62 ~ 64HRC.
④ Isetyenziselwa ukuvelisa iimold ezingqukuva, iimold ezingqukuva, kunye neebhloko zokufaka ezifuna ukumelana nokuguguleka okuphezulu kunye neemilo ezintsonkothileyo kwiimold ezigobileyo. Kucetyiswa ukuba ubunzima bube yi-60-64HRC xa kusenziwa iimold ezingqukuva, kunye ne-60-64HRC xa kusenziwa iimold ezingqukuva.
⑤ Ukuvelisa iidayi kunye needayi ezicoliweyo ze-extrusion kwiindawo ze-aluminium, kucetyiswa ukuba ubunzima bube yi-60-62HRC xa kusenziwa iidayi, kunye ne-62-64HRC xa kusenziwa iidayi.
⑥ Kucetyiswa ukuba kusetyenziswe ubulukhuni obuyi-62~64HRC kwiimold ezingqukuva nezingqukuva ezisetyenziselwa ukwenza iimolds ezibandayo zobhedu.
⑦ Iimold ezingqukuva nezingqukuva ezisetyenziselwa iimold zentsimbi ezibandayo ezikhupha isinyithi ziyacetyiswa ukuba zibe nobunzima obuyi-62 ~ 64HRC.
⑧ Iipleyiti zentsimbi zasentwasahlobo ezinenxalenye yobunzima obuyi-0.65% ~ 0.80% ezisetyenziselwa ukwenza ikhabhoni zinobunzima obuyi-37 ~ 42HRC, nto leyo enika ubomi obude ukuya kuthi ga kwi-150000 yemijikelo.
⑨ Iipleyiti zentsimbi zasentwasahlobo ezinesiqingatha sobunzima obuyi-0.65% ukuya kwi-0.80% ezisetyenziselwa ukwenza ikhabhoni zinobunzima obuyi-37-42HRC, kwaye ngonyango olongezelelweyo lwe-nitriding, ubomi bazo benkonzo bungafikelela amaxesha angama-400000.
Ⅲ-Ukucutshungulwa kweCr12MoV Cold Working Die Steel:
Iinkcukacha zokuthambisa isikhunta esibandayo: Khusela kwaye ufudumale isikhunta ngee-iron filings kubushushu obuyi-760-780 ℃ kangangeeyure ezili-10, apho i-furnace ipholile kwaye iqine yi-196HBW. Ukwakheka kwesikhunta esibandayo kunokufezekiswa ngokulula.
Iinkcukacha ze-annealing eqhelekileyo ye-isothermal spheroidizing: 850-870 ℃ × iiyure ezi-3-4, epholiswe kwisithando somlilo ukuya kwi-740-760 ℃ × iiyure ezi-4-5 zonyango lwe-isothermal, kunye nobunzima bokupholisa umoya ≤ 241HBW, i-eutectic carbide grade ≤ 3, ubushushu obuphezulu be-isothermal 740-76o ℃, kunye nexesha ≥ iiyure ezi-4-5.
Iinkcukacha ze-spheroidizing annealing: (860 ± 10) ℃ × iiyure ezi-2-4, ukupholisa i-furnace ngesantya sokupholisa se-30 ℃/iyure, (740 ± 10) ° C x iiyure ezi-4-6, ukupholisa kancinci ukuya kwi-500-600 ℃ nge-furnace, ukupholisa umoya emva kokukhupha, ubunzima be-207-255HBW.
Iinkcukacha zokucima kunye nokushisa ngokubanzi: ubushushu bokucima i-1000-1050 ℃, ukucima okanye ukucima ioyile, ubulukhuni be-260HRC, ubushushu bokupholisa i-160-180, ixesha lokupholisa iiyure ezi-2, okanye ubushushu bokupholisa i-325-375 ° C, ukupholisa amaxesha ama-2-3.
Ubushushu bokucima obuphantsi kunye nobushushu obuphantsi bokucima: 950 ℃ -1040 ℃, ubushushu bokucima bumalunga nama-200 ℃, ubushushu besibini.
Ubushushu bokucima obuphezulu kunye nobushushu obuphezulu bokucima: 1050-1100 ℃, ubushushu bokuthambisa bumalunga ne-520 ℃, ubushushu besibini. Indlela yokuqinisa yesibini esetyenziselwa ukucima okuphezulu kunye nokuphinda kusetyenziswe okuphezulu iphucula ubulukhuni, kodwa iinkozo ziya kukhula.
Unyango lwe-Cryogenic: Intsimbi ye-Cr12MoV ifumana unyango lwe-cryogenic, olunokubangela ii-carbides ezisasazeke kakhulu kwi-martensite ecinyiweyo, kwaye ezi carbides ze-ultrafine zinokuguqulwa zibe zii-carbides emva kokufudumala okuphantsi kwama-200 ℃. I-martensite engenalo unyango lwe-cryogenic ibangela kuphela inani elincinci le-carbide kwezinye iindawo zasekuhlaleni emva komlilo ophantsi ojikeleze ubushushu.
I-zhongao isebenzisa indlela yokunyanga ubushushu beekhemikhali ebushushu obuphantsi, egcina ubulukhuni obuphezulu kunye nokumelana nokuguguleka kwentsimbi ye-Cr12MoV. Iileya ezintathu ezisetyenziswa rhoqo zokunyanga ubushushu beekhemikhali ezibushushu obuphantsi, ezizezi: i-ion nitriding, i-gas nitrocarburizing, kunye ne-salt bath sulfur cyanide co nitriding, zinokumelana okukhulu kunye nokunamathela, kunye ne-salt bath sulfur cyanide co nitriding.
Ubomi benkonzo yesidi yokudweba yezixhobo zentsimbi engagqwaliyo ze-zhongao ze-Cr12MoV, emva konyango lwe-nitrocarburization yegesi, bufikelela kwiziqwenga ezingaphezu kwama-30000, ubude obungaphezulu kwe-10 kunezo zemibumba efanayo ephathwa ngokucinywa kunye nokufuthwa kwesiqhelo.
Ixesha leposi: Meyi-23-2024