Sassan shaft na ɗaya daga cikin abubuwan da ake yawan ci karo da su a cikin injina.Ana amfani da shi musamman don tallafawa sifirin watsawa

Abubuwan da aka haɗa, watsa juzu'i da ɗaukar nauyi.Sassan shaft suna jujjuya sassan da tsayin su ya fi diamita, kuma gabaɗaya sun haɗa da farfajiyar cylindrical na waje, farfajiyar juzu'i, rami na ciki da zaren madaidaicin shaft da saman ƙarshen daidai.Dangane da nau'ikan tsari daban-daban, ana iya raba sassan shaft zuwa ginshiƙai na gani, ƙwanƙolin tako, ramukan ramuka da crankshafts.

Shafts tare da tsayin daka mai tsayi zuwa diamita kasa da 5 ana kiran su gajerun raƙuman ruwa, kuma waɗanda ke da rabo fiye da 20 ana kiran su slender shafts.Yawancin shafts suna tsakanin su biyun.

Ana goyan bayan shaft ɗin ta hanyar ɗaukar hoto, kuma sashin shaft ɗin da ya dace da ɗaukar hoto ana kiransa jarida.Mujallar Axle sune ma'auni na taro na shafts.Daidaiton su da ingancin saman gabaɗaya ana buƙatar su zama babba.Abubuwan da ake buƙata na fasaha gabaɗaya an tsara su bisa ga manyan ayyuka da yanayin aiki na shaft, yawanci abubuwa masu zuwa:

(1) Daidaiton girma.Domin sanin matsayin shaft, jarida mai ɗaukar nauyi yawanci yana buƙatar daidaito mai girma (IT5 ~ IT7).Gabaɗaya, daidaiton juzu'i na mujallar shaft don haɗa sassan watsawa yana da ɗan ƙaramin ƙarfi (IT6～IT9).

(2) Daidaiton siffar Geometric Daidaitaccen siffar geometric na sassan shaft galibi yana nufin zagaye, cylindricity, da dai sauransu na jarida, mazugi na waje, ramin taper Morse, da sauransu. Gabaɗaya, yakamata a iyakance haƙuri a cikin kewayon juriya na girma.Don saman zagaye na ciki da na waje tare da madaidaicin buƙatun, ya kamata a yi alamar karkatar da izini akan zane.

(3) Matsakaicin matsayi na haɗin kai Matsayin daidaiton matsayi na sassan shaft an ƙaddara shi ne ta hanyar matsayi da aiki na shaft a cikin na'ura.Gabaɗaya, ya wajaba don tabbatar da buƙatun coaxial na mujallar shaft na sassan watsawa da aka haɗa zuwa jarida mai goyan baya, in ba haka ba zai shafi daidaiton watsawa na sassan watsawa (gears, da sauransu) da kuma haifar da hayaniya.Don madaidaicin madaidaicin madauri, radial runout na sashin madaidaicin shaft zuwa jarida mai goyan baya shine gabaɗaya 0.01 ~ 0.03mm, kuma manyan madaidaicin shafts (kamar manyan shafts) yawanci 0.001 ~ 0.005mm.

(4) Matsakaici na rarrabuwa gabaɗaya, farfajiya na diamita ya dace da sashin watsa abubuwa shine Ra2.63μm, da kuma farfajiya na tallar shaftarin sake tallafawa diamita tare da ɗaukar fansho shine ra0.63 ~ 1.16μm.

Blanks da kayan sassa na folded shaft
(1) Ƙaƙƙarfan ɓangarori masu ɓarna za a iya zabar sassan shaft a matsayin ɓangarorin, ƙirƙira da sauran nau'ikan da ba su da amfani bisa ga buƙatun amfani, nau'ikan samarwa, yanayin kayan aiki da tsari.Don shafts tare da ɗan bambanci a cikin diamita na waje, ana amfani da kayan mashaya gabaɗaya;don ƙwanƙwasa ƙwanƙwasa ko mahimmanci mai mahimmanci tare da manyan diamita na waje, ana amfani da ƙirƙira sau da yawa, wanda ke adana kayan aiki kuma yana rage yawan aikin mashin.Inganta kayan aikin injiniya.

Dangane da ma'auni daban-daban na samarwa, akwai nau'ikan hanyoyin ƙirƙira marasa tushe iri biyu: ƙirƙira kyauta da mutuƙar ƙirƙira.Ana amfani da ƙirƙira kyauta don ƙanana da matsakaita, kuma ana amfani da ƙirƙirar ƙirƙira don yawan jama'a.

(2) Material na shaft sassa Shaft sassa ya kamata a zabi daban-daban kayan da kuma dauko daban-daban zafi magani bayani dalla-dalla (kamar quenching da tempering, normalizing, quenching, da dai sauransu) bisa ga daban-daban aiki yanayi da kuma amfani da bukatun don samun wani ƙarfi, tauri da Abrasion juriya. .

45 karfe abu ne na kowa don sassan shaft.Yana da arha kuma bayan quenching da tempering (ko normalizing), zai iya samun mafi kyau yankan yi, kuma zai iya samun m inji Properties kamar mafi girma ƙarfi da taurin.Bayan quenching, taurin saman na iya zama Har zuwa 45 ~ 52HRC.

Alloy tsarin karfe kamar 40Cr ya dace da shaft sassa tare da matsakaici daidaici da babban gudun.Bayan quenching da tempering da quenching, irin wannan karfe yana da mafi m inji Properties.

Bearing karfe GCr15 da spring karfe 65Mn, bayan quenching da tempering da surface high-mita quenching, da surface taurin iya isa 50-58HRC, kuma yana da high gajiya juriya da kyau lalacewa juriya, wanda za a iya amfani da su kerar high-madaidaicin shafts.

Babban madaidaicin kayan aikin injin (kamar injin niƙa na injin niƙa, sandar injin jig mai ban sha'awa) na iya zaɓar karfe 38CrMoAIA nitride.Bayan quenching da tempering da surface nitriding, wannan karfe ba kawai zai iya samun babban taurin, amma kuma kula da taushi core, don haka yana da kyau tasiri juriya da taurin.Idan aka kwatanta da carburized da taurare karfe, yana da halaye na kananan zafi magani nakasawa da kuma mafi girma taurin.

No. 45 karfe ana amfani da ko'ina a cikin masana'antu inji, da inji Properties na wannan karfe ne da kyau sosai.Amma wannan shi ne matsakaicin carbon karfe, kuma quenching yi ba shi da kyau.No. 45 karfe za a iya quenched zuwa HRC42 ~ 46.Don haka, idan ana buƙatar taurin saman kuma ana son ingantaccen kayan aikin ƙarfe na 45#, saman karfe 45# ana kashe shi (high-frequency quenching ko kai tsaye quenching), ta yadda za a iya samun taurin da ake buƙata.

Lura: A'a. 45 karfe tare da diamita na 8-12mm yana da haɗari ga fashewa a lokacin quenching, wanda shine matsala mafi rikitarwa.Matakan da ake ɗauka na yanzu sune saurin tada samfurin a cikin ruwa yayin kashewa, ko sanyaya mai don guje wa fasa.

Alamar Sinanci ta ƙasa No. 45 No. UNS Standard No. GB ​​699-88

Abubuwan sinadaran (%) 0.42-0.50C, 0.17-0.37Si, 0.50-0.80Mn, 0.035P, 0.035S, 0.25Ni, 0.25Cr, 0.25Cu

Siffar ingot, billet, mashaya, bututu, farantin karfe, jihar tsiri ba tare da maganin zafi ba, annealing, daidaitawa, matsanancin zafin jiki

Ƙarfin ɗamara Mpa 600 Ƙarfin Haɓaka Mpa 355 Elongation% 16

Nadawa a fagen gyaran gyare-gyare
A mold waldi m model for No. 45 karfe ne: CMC-E45

Shi ne kawai waldi sanda ga matsakaici-taurin karfe da kyau bonding Properties, dace da iska-sanyi karfe, jefa karfe: kamar ICD5, 7CrSiMnMoV… da dai sauransu Auto sheet karfe murfin kyawon tsayuwa da manyan karfe sheet karfe stamping kyawon tsayuwa ga zane da kuma gyara. sassa masu shimfiɗa, kuma ana iya amfani da su don samar da ƙasa mai wuya.

Bugu da ƙari, akwai wasu abubuwa da ya kamata ku kula yayin amfani da su:

1. Kafin ginawa a cikin wuri mai laushi, ya kamata a bushe wutar lantarki a 150-200 ° C na minti 30-50.

2. Gabaɗaya preheating sama da 200 ° C, sanyaya iska bayan waldawa, damuwa damuwa ya fi kyau idan zai yiwu.

3. Inda ake buƙatar walda mai yawa, yi amfani da CMC-E30N azaman madaidaicin walƙiya don samun sakamako mai kyau na walda.

Hardness HRC 48-52

Babban sinadaran Cr Si Mn C

M kewayon halin yanzu:

Diamita da tsawon m/m 3.2*350mm 4.0*350mm
The 45 ma'auni karfe na mu factory da ake amfani da su sa mold tushe a kanda m.