Ⅰ-Yintoni i-Cr12MoV Cold Working Die Steel
I-Cr12MoV intsimbi yokusebenza ebandayo esebenzayo eveliswa yi-zhongao yeyodidi lwentsimbi yensimbi enganyangekiyo yokunxiba, ebonakala ngokumelana nokunxiba okuphezulu, ukuqina, ukuguqulwa kwe-micro, ukuzinza okuphezulu kwe-thermal, amandla okugoba aphezulu, kunye nezinye iipropathi.Yesibini kuphela kwintsimbi enesantya esiphezulu kwaye iyimathiriyeli ebalulekileyo yesitampu, isihloko esibandayo, kunye nezinye izinto.I-Cr12MoV die steel yintsimbi ye-carbon molybdenum ledeburite enomxholo ophantsi wekhabhoni kunentsimbi ye-Crl2.I-Molybdenum kunye ne-vanadium zongezwa ukuphucula ukusebenza okutshisayo, ukuqina kwempembelelo kunye nokusabalalisa i-carbide yentsimbi.I-Cr12MoV die steel inomxholo ophantsi wekhabhoni kune-Cr12 die steel.Ukongezwa kwezinto ezintsha ze-alloy kuphucula i-phenomenon ye-carbide engalinganiyo.Ngaphezu koko, i-molybdenum kunye ne-molybdenum inokunciphisa ukuhlukana kwe-carbide kunye nokuphucula ukuqina.I-Vanadium kunye ne-vanadium inokucoca iinkozo kunye nokwandisa ukuqina, Ngoko ke, intsimbi ye-zhongao ye-Cr12MoV yokubumba inokuqina okuphezulu, kunye ne-cross-section engaphantsi kwe-400mm enokucima ngokupheleleyo, kwaye ingakwazi ukugcina ubulukhuni obuhle kwaye inxibe ukuxhathisa kwi-300-400 ℃.Ngaphandle koko, i-zhongao ye-Cr12MoV yokubumba insimbi inobunzima obungcono kunezinye izinto zebakala elifanayo kwimarike jikelele, kwaye ukwenzeka kokutshintsha umthamo ngexesha lokucima kuncitshiswe kakhulu.Ke ngoko, ukuxhathisa kwayo okuphezulu kunye neepropathi ezilungileyo ezibanzi zoomatshini zenza i-Jinbaicheng's Cr12MoV intsimbi yokungunda ifaneleke ngakumbi ukwenza imifuziselo eyahlukeneyo enecandelo elikhulu elinqamlezayo, imilo entsonkothileyo, kunye nokumelana neempembelelo ezinkulu, kunye nezixhobo ezahlukeneyo zokungqimba ezibandayo phantsi kweemeko ezinzima zokusebenza, njenge. ukubetha kuyafa, ukucheba kufa, ukuqengqeleka kuyafa, njl. njl.
Ⅱ-IsiKhokelo seSicelo seCr12MoV Cold Working Die Steel
① I-Cr12MoV inokusetyenziselwa ukwenza iimilo ezintsonkothileyo zeconvex, i-concave, kunye nokufaka iibhloko zokugqobhoza umngundo obunzima bezinto>3mm.Kunconywa ukuba ube nobunzima be-58 ~ 62HRC xa usenza i-convex molds kunye ne-60 ~ 64HRC xa usenza i-concave molds.
② Ukuveliswa kwe-punch kunye ne-concave molds efuna ukuxhatshazwa okuphezulu, kucetyiswa ukuba ube nobunzima be-60 ~ 62HRC xa wenza i-punch kunye ne-62 ~ 64HRC xa wenza i-mold concave.
③ Ukuveliswa kobunjwa be-concave obungaguqukiyo kwiimbumba ezinzulu zokudweba, kuyacetyiswa ukuba ube nobunzima be-62 ~ 64HRC.
④ Isetyenziselwa ukuvelisa i-convex molds, i-concave molds, kunye nokufaka iibhloko ezifuna ukuxhathisa okuphezulu kunye neemilo ezintsonkothileyo zokugoba.Kunconywa ukuba ube nobunzima be-60-64HRC xa usenza i-convex molds, kunye ne-60-64HRC xa usenza i-concave molds.
⑤ Ukuvelisa i-extrusion ebandayo iyafa kwaye ifa ngenxa yeendawo ze-aluminium, kucetyiswa ukuba ube nobunzima be-60-62HRC xa usenza iifa, kunye ne-62-64HRC xa usenza ukufa.
⑥ Kuyacetyiswa ukuba kusetyenziswe ubulukhuni be-62~64HRC kwi-convex kunye ne-concave molds esetyenziselwa ukwenza i-copper extrusion molds ebandayo.
⑦ I-convex kunye ne-concave molds esetyenziselwa i-molds yentsimbi ebandayo ye-extrusion iyacetyiswa ukuba ibe nobunzima be-62 ~ 64HRC.
⑧ Iiplati zetsimbi zasentwasahlobo ezineqhekeza elikhulu le-0.65% ~ 0.80% esetyenziselwa ukwenza i-carbon enobunzima be-37 ~ 42HRC, ukubonelela ubomi obufikelela kwi-150000 imijikelezo.
⑨ Iiplati zetsimbi zasentwasahlobo kunye neqhekeza elikhulu le-0.65% ukuya kwi-0.80% esetyenziselwa ukwenza i-carbon enobunzima be-37-42HRC, kunye nonyango olongezelelweyo lwe-nitriding, ubomi babo benkonzo bunokufikelela kumaxesha angama-400000.
Ⅲ-Ukusetyenzwa kwe-Cr12MoV Cold Working Die Steel:
Ukucaciswa kokuthambisa i-mold extrusion ebandayo: Khusela kwaye ushushu umngundo ngeefayili zentsimbi kwiqondo lobushushu le-760-780 ℃ iiyure ezili-10, ngokupholisa isithando somlilo kunye nobunzima be-196HBW.Ukubunjwa kwe-extrusion ebandayo kunokufezekiswa kakuhle.
Ukucaciswa kwe-annealing ye-isothermal spheroidizing annealing: 850-870 ℃ × 3-4 iiyure, ipholile kwi-740-760 ℃ × iiyure ezi-4-5 zonyango lwe-isothermal, kunye nobunzima bokupholisa umoya lobushushu 740-76o ℃, kunye nexesha ≥ 4-5 iiyure.
Ukucaciswa kwe-spheroidizing annealing: (860 ± 10) ℃ × iiyure ezi-2-4, ukupholisa eziko ngesantya sokupholisa se-30 ℃/yure, (740 ± 10) ° C x 4-6 iiyure, ukupholisa kancinane ukuya kuma-500-600 ℃ isithando somlilo, ukupholisa umoya emva kokuphuma, ubunzima 207-255HBW.
Ukucinywa ngokubanzi kunye neempawu zokushisa: ukucima ukushisa kwe-1000-1050 ℃, ukucima i-oyile okanye ukucima, ukuqina kwe-260HRC, ubushushu bokufudumala kwe-160-180, ixesha lokufudumala iiyure ezi-2, okanye ukushisa kwe-325-375 ° C, ukutshisa amaxesha angama-2-3.
Ukucima okuphantsi kunye nobushushu obuphantsi bokucima ubushushu: 950 ℃ -1040 ℃, ubushushu bobushushu bujikeleze i-200 ℃, ubushushu besibini.
Ukucima okuphezulu kunye nobushushu obuphezulu bokucima: 1050-1100 ℃, ubushushu bobushushu bujikeleze i-520 ℃, ubushushu besibini.Indlela yesibini yokuqina esetyenziselwa ukucima okuphezulu kunye nokuhlaziywa okuphezulu kuphucula ubunzima, kodwa iinkozo ziya kukhula.
Unyango lwe-Cryogenic: Intsimbi ye-Cr12MoV ifumana unyango lwe-cryogenic, olunokuthi lugqithise kakhulu i-ultrafine carbides esuka kwi-martensite ecinyiweyo, kwaye ke ezi carbides ze-ultrafine zingatshintshwa zibe yi-carbides emva kwe-200 ℃ yobushushu obuphantsi.I-martensite ngaphandle konyango lwe-cryogenic ibeka kuphela inani elincinci le-carbide kwezinye iindawo zendawo emva kokushisa okuphantsi komlilo ojikelezayo.
I-zhongao ithatha indlela yonyango yobushushu obuphantsi bemichiza, egcina ubulukhuni obuphezulu kunye nokumelana nokunxiba kwentsimbi ye-Cr12MoV.Izaleko ezintathu eziqhele ukusetyenziswa kwikhemikhali ephantsi yobushushu obuphantsi, ezizezi, iion nitriding, igesi nitrocarburizing, kunye nebhafu yetyuwa yesalfure cyanide co nitriding, zinempembelelo enkulu yokuxhathisa kunye nokuncamathela, kunye nebhafu yetyuwa yesalfure cyanide co nitriding yeyona ilungileyo.
Ubomi benkonzo yomzobo bafa kwi-zhongao ye-Cr12MoV izixhobo zensimbi ezingenasici, emva kokunyangwa kwegesi ye-nitrocarburization, ifikelela ngaphezu kwama-30000 amaqhekeza, angaphezulu kwamaxesha angama-10 ubude kunobumba obufanayo obuphathwa ngokucinywa okuqhelekileyo kunye nokuvutha.
Ixesha lokuposa: May-23-2024