Ⅰ-Chii chinonzi Cr12MoV Cold Working Die Steel
Simbi yeCr12MoV inotonhora inogadzirwa nezhongao iri muchikamu chesimbi yemidziyo isingatsvedzeri kupfekwa zvakanyanya, iyo inoratidzwa nekusapfeka kwakanyanya, kuomarara, kuchinjika kudiki, kugadzikana kwakanyanya kwekupisa, simba rekukotama zvakanyanya, nezvimwe zvinhu. Ndiyo yechipiri chete kune simbi inomhanya zvakanyanya uye chinhu chakakosha chekusimbisa, musoro unotonhora, nezvimwe zvinhu. Simbi yeCr12MoV isimbi yecarbon molybdenum ledeburite ine kabhoni shoma pane simbi yeCrl2. Molybdenum nevanadium zvinowedzerwa kuti zvivandudze mashandiro ekushanda anopisa, kusimba kwemhedzisiro uye kupararira kwekabhoni kwesimbi. Simbi yeCr12MoV ine kabhoni shoma pane simbi yeCr12. Kuwedzerwa kwezvinhu zvitsva zvealloy kunovandudza chiitiko cheisina kuenzana kwekabhoni. Uyezve, molybdenum nemolybdenum zvinogona kuderedza kupatsanurwa kwekabhoni uye kuvandudza kuomarara. Vanadium nevanadium zvinogona kunatsa tsanga uye kuwedzera kusimba, Saka, simbi yeCr12MoV yezhongao ine kusimba kwakanyanya, ine chikamu chakachinjika chiri pasi pe400mm chinogona kudzimwa zvachose, uye ichiri kugona kuchengetedza kusimba kwakanaka uye kuramba kupfeka pa300-400 ℃. Kunze kweizvozvo, simbi yeCr12MoV yezhongao ine kusimba kuri nani pane zvimwe zvinhu zvemhando imwe chete mumusika, uye mukana wekuchinja kwevhoriyamu panguva yekudzima unodzikira zvikuru. Naizvozvo, kuramba kwayo kupfeka kwakanyanya uye hunhu hwakanaka hwemakanika hwakakwana zvinoita kuti simbi yeCr12MoV yeJinbaicheng ive yakakodzera kugadzira mhando dzakasiyana-siyana dzine chikamu chakakura, chimiro chakaoma, uye inotsungirira kukuvadzwa kukuru, pamwe chete nezvishandiso zvakasiyana-siyana zvekutsika-tsika zvinotonhora mumamiriro ekushanda akaoma, senge kupwanya madhiri, kuchekerera madhiri, nezvimwewo. Simbi yesimbi yakadzika yekudhirowa die, saw yakatenderera, zvishandiso zvakajairwa nezvishandiso zvekuyera, shinda inotenderera die, nezvimwewo.
Ⅱ-Nhungamiro yeKushandisa Cr12MoV Cold Working Die Steel
① Cr12MoV inogona kushandiswa kugadzira maumbirwo akaomarara e convex, concave, uye insert blocks ekubaya ma molds ane ukobvu hwezvinhu>3mm. Zvinokurudzirwa kuti kuomarara kwe58~62HRC pakugadzira ma convex molds uye 60~64HRC pakugadzira ma convex molds.
② Pakugadzira mapundu e punch ne concave anoda simba rakawanda rekudzivirira kupfeka, zvinokurudzirwa kuti kuomarara kwe 60 ~ 62HRC pakugadzira punch uye 62 ~ 64HRC pakugadzira mapundu e concave.
③ Pakugadzira mapundu akakombama asingaparare mumapandu akadzama, zvinokurudzirwa kuti ave akaomarara e62~64HRC.
④ Inoshandiswa kugadzira mapundu akakombama, mapundu akakombama, uye mabhuroko anoda simba rekudzivirira kupfeka zvakanyanya uye maumbirwo akaomarara mumapundu akakombama. Zvinokurudzirwa kuti kuomarara kwe60-64HRC pakugadzira mapundu akakombama, uye 60-64HRC pakugadzira mapundu akakombama.
⑤ Pakugadzira madhiyi ekuwedzera anotonhora uye madhiyi ekugadzira zvikamu zvearuminiyamu, zvinokurudzirwa kuti kuomarara kwe60-62HRC pakugadzira madhiyi, uye 62-64HRC pakugadzira madhiyi.
⑥ Zvinokurudzirwa kushandisa kuomarara kwe62~64HRC pazviumbwa zve convex ne concave zvinoshandiswa kugadzira zviumbwa zve copper cold extrusion.
⑦ Zviumbwa zvesimbi zvakapinza uye zvakatetepa zvinoshandiswa pakugadzira zviumbwa zvesimbi zvinotonhora zvinokurudzirwa kuti zvive nekuomarara kwe62 ~ 64HRC.
⑧ Maplate esimbi espring ane huremu hwe0.65% ~ 0.80% anoshandiswa kugadzira kabhoni ane kuomarara kwe37 ~ 42HRC, zvichipa hupenyu hwemasekonzi anosvika 150000.
⑨ Maplate esimbi echitubu ane huremu hwe0.65% kusvika 0.80% anoshandiswa kugadzira kabhoni ane kuomarara kwe37-42HRC, uye kana akawedzerwa nitriding treatment, hupenyu hwawo hwekushanda hunogona kusvika ka400000.
Ⅲ-Kugadziriswa kweCr12MoV Cold Working Die Steel:
Maitiro ekunyorovesa mold inotonhorera: Dzivirira uye pisa mold nemapepa esimbi patembiricha ye760-780 ℃ kwemaawa gumi, nekutonhodza choto uye kuomarara kwe196HBW. Kugadzira mold inotonhorera kunogona kuitwa zviri nyore.
Tsanangudzo yekushandiswa kweannealing ye isothermal spheroidizing: 850-870 ℃ × maawa 3-4, inotonhorerwa muchoto kusvika 740-760 ℃ × maawa 4-5 ekurapwa kwe isothermal, nekuomarara kwekutonhodza kwemhepo ≤ 241HBW, giredhi re eutectic carbide ≤ 3, tembiricha yepamusoro ye isothermal 740-76o ℃, uye nguva ≥ maawa 4-5.
Tsanangudzo ye spheroidizing annealing: (860 ± 10) ℃ × maawa 2-4, kutonhora kwechoto padanho rekutonhodza re30 ℃/awa, (740 ± 10) ° C x maawa 4-6, kutonhora zvishoma nezvishoma kusvika 500-600 ℃ nechoto, kutonhora kwemhepo mushure mekubuda, kuomarara 207-255HBW.
Zvinodiwa pakudzima nekudzikamisa: tembiricha yekudzima 1000-1050 ℃, kudzimisa kana kudzimisa mafuta, kuomarara 260HRC, tembiricha yekudzikamisa 160-180, nguva yekudzikamisa maawa maviri, kana tembiricha yekudzikamisa 325-375 ° C, kudzimisa ka2-3.
Kudzima kwakaderera uye kudzima kwakaderera: 950 ℃ -1040 ℃, tembiricha yekudzima inenge 200 ℃, chipiri chekudzima.
Kudzima zvakanyanya uye kudzoka kwakanyanya kwekudzima: 1050-1100 ℃, tembiricha yekudzima inenge 520 ℃, chipiri chekudzima. Nzira yechipiri yekuomesa inoshandiswa pakudzima zvakanyanya uye kudzokorodza zvakanyanya inovandudza kuomarara, asi tsanga dzichakura.
Kurapa kweCryogenic: Simbi yeCr12MoV inorapwa necryogenic, iyo inogona kukonzera macarbide akapararira zvakanyanya kubva kumartensite yakadzima, uye macarbide aya eultrafine anogona kushandurwa kuita macarbide mushure mekudziya tembiricha yakaderera ye200 ℃. Martensite isina kurapwa kwecryogenic inongokonzera huwandu hushoma hwecarbide mune dzimwe nzvimbo dzemunharaunda mushure mekupisa kwetembiricha yakaderera.
Zhongao inoshandisa nzira yekurapa kupisa kwemakemikari inodziya zvishoma, iyo inochengetedza kuomarara kwakanyanya uye kuramba kupfeka kwesimbi yeCr12MoV. Matatu anoshandiswa zvakanyanya ekurapa kupisa kwemakemikari anodziya zvishoma, anoti ion nitriding, gas nitrocarburizing, uye salt bath sulfur cyanide co nitriding, ane simba guru rekudzivirira uye kunamira, uye salt bath sulfur cyanide co nitriding ndiyo yakanakisa.
Hupenyu hwebasa redhiyeti yekudhirowa yemidziyo yesimbi isina ngura yeCr12MoV yezhongao, mushure mekurapwa kwegesi nenitrocarburization, inosvika zvidimbu zvinopfuura 30000, iyo yakareba kanopfuura kagumi kupfuura iyo yemaforoma akafanana anorapwa nekushandisa nzira dzechinyakare dzekudzima nekudziya.
Nguva yekutumira: Chivabvu-23-2024