Ongororo yezvivakwa uye makemikari kuumbwa kwe20CrMnTi inotonhora-inodhonzwa seamless simbi pombi

20CrMnTi simbi inonzi giya simbi, uye zvikamu zvakawanda zvinoshandisa 20CrMnTi.

20CrMnTipombi yesimbi isina musonoinogona kukamurwa kuva mhando nhatu: inotonhora-inodhonzwa, inopisa-yakakungurutswa uyeinotonhora-yakakungurutswa inopenya seamless simbi pombi, nezvinodiwa zvakasiyana uye maitiro akasiyana.Zvisinei, mamwe mayuniti anoshandisa simbi yakatenderera kugadzira zvikamu pasina kufunga kutsiva mapaipi esimbi.Kutsiva 20CrMnTi inotonhora-inodhonzwa seamless simbi pombi ine 20CrMbTi simbi yakatenderedzwa haingochengetedze chete zvigadzirwa nemaawa ekushanda, asi zvakare inoderedza mitengo uye inowedzera kukwikwidza kwemusika.20CrMnTi uye 30CrMnSiA inotonhora-inodhonzwa seamless simbi mapaipi masimbi ane mashandiro akanaka, kuomarara kwepamusoro, kuomarara uye kusapfeka-kupfeka uye kuomarara kwepakati mushure mekuviga uye kudzima, kusimba kwakadzika-kupisa, kusimba kwepakati, uye machina yakanaka mushure mekugara.20CrMnTiinotonhora-inodhonzwa seamless simbi pombikazhinji ishoma kabhoni simbi ine kabhoni ine 0.17% - 0.24%.Inoshandiswa zvakanyanya mumotokari kugadzira magiya ekutapurirana.Iyo yepakati yakaomeswa carburized kabhoni simbi, yepakati CrMnTi simbi, ine yakanyanya kuoma.Pasi pemamiriro ekuona kuomarara, ine simba rakanyanya uye kuoma, kunyanya yakaderera tembiricha kukanganisa kuoma.20CrMnTi pamusoro carburized uye yakaoma simbi.Yakanaka machinability, kudiki deformation mukugadzirisa kwakakosha, uye kwakanaka kuneta kuramba.Chinangwa: yegiya, shafts, Piston zvikamu, nezvimwe zvinoshandiswa kune akasiyana akakosha zvikamu zvemotokari uye ndege.

20CrMnTi chiyero: GB/T 3077-1988

Hunhu uye chiyero chekushandiswa kwe20CrMnTi inotonhora-inodhonzwa isina musono pombi yesimbi:

Inoshandiswa kugadzira zvikamu zvakakosha zvine chikamu chisingasviki 30mm chinotakura kumhanya kwakanyanya, yepakati kana inorema mutoro, kukanganisa uye kukweshera, senge magiya, mhete dzegiya, giya shaft crossheads, nezvimwe.

Kemikari inoumbwa ye20CrMnTi inotonhora-inodhonzwa isina musono pombi yesimbi (mapoinzi):

Kabhoni C: 0.17 ～ 0.23

Silicon Si: 0.17 ～ 0.37

Manganese Mn: 0.80 ～ 1.10

Sulfur S: zvinotenderwa zvakasara zvemukati ≤ 0.035

Phosphorus P: zvinotenderwa zvakasara zvemukati ≤ 0.035

Chromium Cr: 1.00 ～ 1.3020CrMnTi pombi yesimbi inotonhora inodhonzwa isina musono

Nickel Ni: zvinotenderwa zvakasara zvemukati ≤ 0.030

Copper Cu: inotenderwa yakasara yemukati ≤ 0.030

Titanium Ti: 0.04-0.10

Mechanical zvimiro zve 20CrMnTi inotonhora-inodhonzwa seamless simbi pombi:

simba rekusimba σ b (MPa):≥1080(110)

goho simba σ s (MPa):≥835(85)

kureba δ 5 (％):≥10

Kuderedzwa kwenzvimbo ψ (％): ≥45

Impact simba Akv (J): ≥ 55

Impact kuomarara kukosha α kv (J/cm2):≥69(7)

Kuoma: ≤ 217HB

Saizi yemuenzaniso: saizi isina chinhu saizi ndeye 15mm

Chimiro chekurapa kwekupisa uye metallographic chimiro che20CrMnTi inotonhora-inodhonzwa isina musono simbi pombi:

Tsanangudzo yekurapa kwekupisa: kudzima: 880 ℃ kekutanga, 870 ℃ kechipiri, kutonhora kwemafuta;Temper 200 ℃, kutonhora kwemvura uye kutonhora kwemhepo.

20crmnti simbi pombi isimbi yakaomesesa yepakati, iyo ine kunaka kuomarara nekuda kwekuwanda kwakawanda kweCr, Mn uye Ti.Iyo yakakosha dhayamita yekudzima mafuta ndeye 40mm;Mushure mekuputira uye kudzima, ine yakakwira kupfeka kuramba uye kuomarara kwakanyanya, kunyanya kuderera kwekushisa kukanganisa kuoma;Simbi ine yakanaka carburizing process, diki kukura kwezviyo maitiro, yakananga kudzima uye kudiki deformation.20CrMnTi simbi inogona kushandiswa kugadzira inorema basa carburized zvikamu nechikamu chisingasviki 30 ℃, uye inogona kumira kumhanya, yepakati mutoro kana mutoro unorema, kukanganisa uye kukwesha, senge magiya, giya shafts, giya mhete, mhete dzemuchinjikwa, claw clutches. , makonye, ​​etc.

Iyo kemikari ye20crmnti simbi pombi inosanganisira kabhoni C, silicon Si, manganese Mn, sulfur S, phosphorus P uye chromium Cr.20crmnti simbi pombi yekugadzira maitiro: kabhoni simbi, kupedzisa kutenderera, isiri-oxidation inopenya kupisa kupisa (NBK nyika), nondestructive kuyedza, simbi pombi yemukati madziro inogezwa nemichina yakakosha uye yakashambidzwa pasi pekumanikidzwa kukuru, anti-ngura mafuta papombi yesimbi iri. inorapwa kudzivirira ngura, uye zvivharo pamigumo miviri inorapwa kudzivirira guruva.20crmnti simbi pombi maficha: madziro emukati nekunze epombi yesimbi ane yakanyanya kurongeka uye kupedzisa kwepamusoro, pombi yesimbi haina oxide layer mushure mekupisa kupisa, madziro emukati ane hutsanana hwepamusoro, pombi yesimbi inotakura kumanikidza kwakanyanya, kutonhora kukotama hakuiti. deform, uye kuwedzera uye flattening haina mitswe.

Shandong Haihui Steel Co., Ltd. inogadzira inotonhora yakakungurutswa nemazvo inopenya seamless simbi mapaipiyeGB 10 #, GB20 #, GB35 #, GB45 #, 20Cr, 40Cr, 16Mn, 35CrMo, 20CrMoTi, Gcr15.