Analysis of Properties da sinadaran abun da ke ciki na 20CrMnTi sanyi-jawo sumul karfe bututu

20CrMnTi karfe ana kiransa karfen gear, kuma yawancin sassa suna amfani da 20CrMnTi.

20CrMnTibututu maras nauyiza a iya raba iri uku: sanyi-jawo, zafi-birgima dabututun ƙarfe mara nauyi mai sanyi-birgima, tare da buƙatu daban-daban da matakai daban-daban.Duk da haka, wasu raka'a suna amfani da karfe zagaye don samar da sassa ba tare da la'akari da maye gurbin bututun karfe ba.Sauya bututun ƙarfe na 20CrMnTi mai sanyi wanda ba shi da kyau tare da 20CrMbTi zagaye karfe ba kawai yana adana albarkatun albarkatun kasa da sa'o'in aiki ba, har ma yana rage farashi da haɓaka gasa kasuwa.20CrMnTi da 30CrMnSiA bututun ƙarfe mara nauyi mai sanyi-ƙarfe sune carburized ƙarfe tare da kyakkyawan aiki, babban ƙarfin ƙarfi, ƙasa mai ƙarfi da lalacewa da tauri bayan carburizing da quenching, babban tasiri mai ƙarancin zafin jiki, matsakaicin weldability, da machinability mai kyau bayan daidaitawa.20CrMnTibututun ƙarfe mara nauyi mai sanyiyawanci low carbon karfe tare da carbon abun ciki na 0.17% - 0.24%.Ana amfani da shi sosai a cikin motoci don kera kayan watsawa.Yana da matsakaici mai tauri carburized carbon karfe, matsakaici CrMnTi karfe, tare da babban taurin.A ƙarƙashin yanayin tabbatar da taurin, yana da ƙarfin ƙarfi da ƙarfi, musamman ƙananan tasirin tasirin zafi.20CrMnTi surface carburized da taurare karfe.Kyakkyawan inji, ƙananan nakasawa a cikin aiki na musamman, da kuma kyakkyawan juriya na gajiya.Manufar: don gears, shafts, Piston sassa, da sauransu ana amfani da su don sassa daban-daban na motoci da jiragen sama.

20CrMnTi misali: GB/T 3077-1988

Halaye da iyakokin aikace-aikace na20CrMnTi sanyi-jawo maras sumul karfe bututu:

Ana amfani da shi don kera mahimman sassa tare da sashin ƙasa da 30mm wanda ke ɗaukar babban gudu, matsakaici ko nauyi mai nauyi, tasiri da juzu'i, kamar gears, zoben gear, gear shaft crossheads, da dai sauransu.

Chemical abun da ke ciki na 20CrMnTi sanyi-jawo sumul karfe bututu (maki):

Carbon C: 0.17 ~ 0.23

Silicon Si: 0.17 ~ 0.37

Manganese Mn: 0.80 zuwa 1.10

Sulfur S: abun ciki da aka yarda da shi ≤ 0.035

Phosphorus P: abun ciki da aka halatta ≤ 0.035

Chromium Cr: 1.00 ~ 1.3020CrMnTi bututun ƙarfe mara nauyi mara nauyi

Nickel Ni: abun ciki da aka halatta ≤ 0.030

Copper Cu: abun ciki da aka yarda da shi ≤ 0.030

Titanium Ti: 0.04-0.10

Kaddarorin injina na 20CrMnTi mai sanyin bututun ƙarfe mara nauyi:

Ƙarfin ƙarfi σ b (MPa) ：≥1080(110)

Ƙarfin yawan amfanin ƙasa σ s (MPa) ：≥835(85)

elongation δ 5 (＄) ：≥10

Rage yanki ψ (％)：≥45

Tasirin makamashi Akv (J): ≥ 55

Ƙimar taurin tasiri α kv (J/cm2) ：≥69(7)

Taurin: ≤ 217HB

Girman samfurin: girman girman samfurin shine 15mm

Ƙayyadaddun jiyya na zafi da tsarin metallographic na 20CrMnTi mai sanyin bututun ƙarfe mara nauyi:

Heat magani bayani dalla-dalla: quenching: 880 ℃ a karon farko, 870 ℃ a karo na biyu, mai sanyaya;Temper 200 ℃, sanyaya ruwa da sanyaya iska.

20crmnti karfe bututu ne matsakaici hardenability karfe, wanda yana da kyau hardenability saboda mahara alloying na Cr, Mn da Ti.Matsakaicin diamita mai mahimmanci na kashe mai yana kusan 40mm;Bayan carburizing da quenching, yana da tsayin daka mai tsayi da tsayin daka, musamman ƙananan tasirin tasirin zafi;Karfe yana da tsari mai kyau na carburizing, ƙananan haɓakar hatsi, quenching kai tsaye da ƙananan nakasawa.20CrMnTi karfe za a iya amfani da m don samar da nauyi nauyi carburized sassa tare da sashe kasa da 30 ℃, kuma zai iya jure babban gudu, matsakaici kaya ko nauyi nauyi, tasiri da gogayya, kamar gears, gear shafts, gear zobba, giciye zobba, kambori clutches. , tsutsotsi, da sauransu.

Abubuwan sinadaran na bututun ƙarfe na 20crmnti sun haɗa da carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P da chromium Cr.20crmnti karfe bututu samar tsari: carbon karfe, gama mirgina, ba hadawan abu da iskar shaka mai haske zafi magani (NBK jihar), nodestructive gwaji, karfe bututu ciki bango ne brushed da musamman kayan aiki da kuma wanke karkashin high matsa lamba, anti-tsatsa mai a kan karfe bututu ne ana bi da su don rigakafin tsatsa, kuma ana kula da murfin a ƙarshen duka don rigakafin ƙura.20crmnti karfe bututu fasali: ciki da waje bango na karfe bututu da high daidaito da kuma high gama, da karfe bututu ba shi da wani oxide Layer bayan zafi magani, ciki bango yana da high tsabta, da karfe bututu bears high matsa lamba, sanyi lankwasawa ba ya. nakasar, kuma fadadawa da lallashi ba su da fasa.

Canjin farashin hannun jari na Shandong Haihui Steel Co., Ltd sanyi birgima madaidaicin haske maras sumul karfe bututuna GB 10 #, GB20 #, GB35 #, GB45 #, 20Cr, 40Cr, 16Mn, 35CrMo, 20CrMoTi, Gcr15.