Isihloko esisodwa sokuqonda i-vacuum high pressure gas quenching furnace
1. Yini i-vacuum high pressure gas quenching?
I-vacuum high pressure gas quenching isho insimbi yamathuluzi, insimbi enesivinini esikhulu kanye nensimbi eyingxubevange okuyizinto eziqine kalula. Ngemva kokulayishwa esithandweni se-vacuum ukuze kufinyelelwe ku-vacuum degree eshiwo inqubo, ishiselwa kuzinga lokushisa elibucayi i-Ac3 noma i-Ac1 noma ngaphezulu, futhi igcinwe ifudumele ngokuvumelana nezidingo zenqubo. Isikhathi esithile, bese ugcwalisa ngokushesha igesi ye-inert ephezulu (He, Ar) noma i-non-reactive gas N2 noma enye igesi exubile, igumbi lifinyelela ingcindezi eshiwo (10bar, 20bar, 40bar), futhi ngesikhathi esifanayo. vula ifeni yamandla aphezulu ukuze ushayele ifeni ekwazi ukumelana nokushisa. I-workpiece eshisayo ishaywa ngesivinini esikhulu. Ngemuva kokuthi ukugeleza komoya oshisayo kudlule kwisishintshi sokushisa esikhethekile sokushintshana kokushisa nokupholisa, ukugeleza komoya obandayo kuhlanza isiqeshana somsebenzi futhi, futhi ekugcineni inqubo yokwelapha ukushisa yesakhiwo sokucisha i-martensitic iyatholakala.
Umdwebo wohlelo lwebanga lokushisa lokucisha lensimbi
2. Ukusetshenziswa kwe-vacuum high pressure gas quenching furnace Tool Steel, Die Steel, High Speed Steel, Ultra High Strength Steel
3.Ukusetshenziswa kwe-vacuum high pressure gas quenching furnace
300M insimbi, igesi ukucisha ngaphansi 10bar N2:
Kungabonakala emfanekisweni ukuthi ubulukhuni bebha eyindilinga ye-Ф60 bufinyelele umphumela wokucisha uwoyela (ngokuvamile mayelana ne-53HRC), futhi umnyombo uyisakhiwo se-lath martensite esinokuqina okuhle. Ibha eyindilinga ye-Ф80 ayihlangabezani nezidingo ezingenhla. Lokhu kubonisa ukuthi izinga lokuqina kwe-workpiece lithintwa ikhono lokuqina lemishini.
Insimbi engu-8Cr4Mo4V, igesi ecisha ngaphansi kuka-0.2MPa N2:
Imiphumela yokuhlolwa kwe-8Cr4Mo4V iron roller ene-D10 XX /01 ngaphansi kwenqubo yokucisha igesi/uwoyela
Izidingo zokucisha: ubulukhuni 60 ~ 64HRC; inhlangano M2 ~ M4; ukuguqulwa (i-cylindrical, flatness) kufanele ilawulwe phakathi kuka-0.20mm.
Lapho ubulukhuni kanye ne-microstructure ihlangabezana nezindinganiso, amazinga angafanelekile okuzungeza nokucaba kwe-workpiece ecishiwe igesi angu-20% no-10%, ngokulandelana, kanti lawo okusebenza acinywe uwoyela angama-70% no-70%. Kungabonakala ukuthi ukucisha igesi kunganciphisa kakhulu ukuguquguquka kwe-workpiece.
4. Izinzuzo zokucisha igesi ye-vacuum high pressure
Izinga eliphezulu le-workpiece lihle, alikho i-oxidation, akukho ukwanda kwekhabhoni, futhi akukho ukuncipha kwe-elementi ye-alloying.
Ukufana kokucisha kuhle, futhi ukuguqulwa kwe-workpiece kuncane.
Isivinini sokupholisa siyalawuleka. Isivinini sokupholisa silawulwa ngokushintsha ingcindezi yokwehla kwamandla emali kanye nesiqondiso sokugeleza komoya, kanye nesivinini sabalandeli (ukuguqulwa kwefrequency). Ngokufanelekile, ingasondela ekucimeni kwe-isothermal.
Yonke le nqubo ayinakho ukungcola futhi akukho kukhishwa kwegesi engcolile, futhi i-workpiece ecishiwe igesi ayidingi ukuhlanzwa kwesibili, okusebenzayo, ukonga amandla kanye nemvelo.
5. Izici eziyinhloko ezinomthelela womphumela wokucisha wesithando somlilo esicisha igesi enomfutho ophezulu
Izinhlobo zemiphumela yokucishaIzici ezithonya | Izici ezithonya |
izinga lokupholisa | Ukucindezela kwegesi okupholisa, umthamo womoya, isivinini somoya ngesikhathi sokucisha |
Ukujula kokuqina kocezu lokusebenza | Khetha uhlobo lwegesi ngesikhathi sokucisha, usayizi wendawo yokushintshanisa ukushisa kanye nezinga lokushintshanisa ukushisa kwesishintshi sokushisa, isakhiwo sangaphakathi, nokuhlelwa kwendawo yokusebenza. |
Ukufana kokuqina kwe-workpiece ngemuva kokucisha | Umfutho wokucisha igesi, ivolumu yomoya, isivinini somoya, isivinini sokudlulisa ukushisa |
6. Izici eziyinhloko ezithinta izinga lokupholisa le-workpiece
Ukucima umfutho wegesi | Ngokuvamile, ingcindezi iyanda, izinga lokupholisa liyakhula, futhi ingcindezi iyanda ibe ngu-40bar, okusondelene nezinga lokupholisa emafutheni amile. |
Ukucisha ukugeleza kwegesi | Ukwandisa ukugeleza komoya kunenzuzo ukukhulisa izinga lokupholisa kanye nokwandisa amandla okushintshanisa ukushisa. |
Ukucisha izinga lokugeleza kwegesi | Ukushesha kwesilinganiso sokugeleza kwegesi ecishayo, inani elikhulu lokushintshisana kokushisa kanye nesivinini esisheshayo. |
Ukucisha igesi uhlobo | Izinhlobo ezahlukene zegesi yokucisha zinezilinganiso zokupholisa ezihlukene zezingcezu zokusebenza H2> Yena > N2>Ar |
7.Izici eziyinhloko ezithinta ukujula kokucisha kwe-workpiece
Igesi yacisha insimbi yensimbi ye-AISH10 | |
Ukucindezela kokucisha igesi | Ukujula kokucisha ucezu lokusebenza |
6 ibha ye-nitrogen | 110mm |
10 ibha ye-nitrogen | 130mm |
20 ibha ye-nitrogen | 170mm |
◆Ingcindezi yokucisha igesi ayithinti kuphela izinga lokupholisa le-workpiece, kodwa futhi ithinta ukuqina kwayo, ngakho-ke kufanele kukhethwe ngokucophelela.
8, Isithando Somlilo Esicisha I-ACME
Isithando somlilo esicisha umoya esiphansi esime mpo
Izici zobuchwepheshe ze-ACME phansi mpo eshaja ivacuum yomlilo yokucisha isithando somlilo:
Umzimba wesithando somlilo uqondile, u-single-chamber, ulayisha phansi, ulungele ikakhulukazi ama-workpieces amise okwenduku ende.
Indlela yokudlulisa iminyango yesithando somlilo esingaphansi isebenzisa isikulufu sebhola, esihamba ngomugqa oqondile, okungelula ukubambeka, futhi sinesembozo esivikelayo ukuvimbela ukungcoliswa kothuli.
Ubuchwepheshe bokupholisa obushintsha isiqondiso bungasetshenziswa kukho kokubili ukupholisa isifutho se-longitudinal kanye nokupholisa okuyindilinga okungu-360°.
Ubakaki ophakamisayo ufakwe indlela yokulungisa ibhalansi ezenzakalelayo, eqeda ngokuzenzakalelayo iphutha elikhulayo lesistimu yokuphakamisa. Ukuphakanyiswa kuzinzile futhi akukho ukudlidliza.
Vacuum evundlile isithando somlilo esicisha igesi enomfutho ophezulu
Izici zobuchwepheshe ze-ACME evundlile vacuum isithando somlilo sokucisha igesi ephezulu:
Ilayini yesithando somlilo iklanywe ngokwe-modular, futhi ukufana kwezinga lokushisa kwesithando somlilo nokufana kokupholisa konke kuhle.
Ngokuya ngezidingo ezihlukene zesivinini sokupholisa zezingxenye, isishintshi sokushisa esisodwa kanye nesiteji ezimbili noma ngisho nezigaba eziningi zesakhiwo sokupholisa sesithando sokushisa singakhethwa.
Ezingxenyeni zangempela zokucutshungulwa, isistimu yokujikeleza yegesi yokumunca ngemuva noma isistimu yokujikeleza yokucisha igesi yokudonsa ngaphambili ingakhethwa.
Isishintshi sokushisa esinezigaba ezimbili esiyingqayizivele, indawo yokushintshanisa ukushisa iphindwe kabili uma iqhathaniswa nevamile.
Izici Zobuchwepheshe Zesithando Somlilo Esicisha Igesi se-ACME
◆Isakhiwo sensimu eshisayo eyisiyingi: Uhlobo lwe-nozzle lungahlela imibhobho eminingi ezungeze igumbi elishisayo ku-360 °, ukuze ukugeleza komoya kushayelwe endaweni yokusebenza kuzo zonke izinhlangothi ukuze kufinyelele ukupholisa okufanayo, futhi isistimu inesakhiwo esilula futhi isetshenziswa kakhulu. .
◆Isakhiwo senkambu eshisayo eyisikwele: Umoya obandayo onesivinini esikhulu udutshulwa kucezu lokusebenza ngombhobho wepuleti lokusabalalisa ukugeleza komoya, futhi umoya oshisayo ukhishwe ngepuleti lokusabalalisa. Ngemva kokushintshana kokushisa ngesishintshi sokushisa, umoya obuyayo uzungeza eduze kwepayipi bese uphephezela ubheke endaweni yokusebenza ukuze ufinyelele ukupholisa kwe-isothermal. Inqubo eqediwe.
◆Umphumela wokupholisa kathathu (ubuchwepheshe obunelungelo lobunikazi be-ACME): Ubuchwepheshe obuhlukile bokubuya komoya obubuyela emuva, umsebenzi wokupholisa kathathu, ukulungiswa kwesishintshi sokushisa okubili ngaphambili nangemuva, umphumela ongcono.
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