chidziwitso

Mipiringidzo ya Molybdenum ndi zigawo zofunika m'mafakitale osiyanasiyana, omwe amadziwika kuti ali ndi mphamvu zambiri, matenthedwe abwino kwambiri, komanso kukana dzimbiri. Njira yopangira mipiringidzo ya molybdenum imaphatikizapo njira zingapo zovuta, kuyambira pakuchotsa zinthu zopangira mpaka kumapeto. Cholemba ichi chabulogu chiwunika zovuta za kupanga molybdenum bar, ndikuwunikira magawo ndi njira zomwe zimagwiritsidwa ntchito pamakampani.

Kodi ndi zinthu ziti za molybdenum zomwe zimapangitsa kuti zikhale zoyenera kupanga bar?

Molybdenum ili ndi zida zapadera zomwe zimapangitsa kukhala chinthu choyenera kupanga ma bar ndi ntchito zosiyanasiyana zamafakitale. Zinthu izi zikuphatikizapo:

• Malo osungunuka kwambiri: Molybdenum ili ndi malo osungunuka a 2,623 ° C (4,753 ° F), imodzi mwapamwamba kwambiri pakati pa zinthu zonse. Khalidweli limapangitsa kuti likhale loyenera kugwiritsidwa ntchito m'malo otentha kwambiri, monga zida za ng'anjo ndi ma rocket nozzles.
• Mphamvu zabwino kwambiri ndi kuuma: Molybdenum imawonetsa mphamvu yamphamvu ndi kulemera kwake ndipo imasunga mphamvu zake pakatentha kwambiri. Katunduyu ndi wofunikira kuti agwiritse ntchito pazamlengalenga, chitetezo, ndi mafakitale opanga magetsi.
• Kutentha kochepa: Kutsika kocheperako kwa zinthuzo pakukulitsa kutentha kumatsimikizira kukhazikika kwapang'onopang'ono kutentha kosiyanasiyana, kupangitsa kuti ikhale yabwino kwa zigawo zolondola ndi zida zoyezera.
• High matenthedwe ndi magetsi conductivity: Matenthedwe abwino kwambiri a Molybdenum amapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito polumikizana ndi magetsi, masinki otentha, ndi zida zina zamagetsi.
• Kulimbana ndi corrosion: Molybdenum imasonyeza kukana kwabwino kumadera osiyanasiyana owononga, kuphatikizapo zitsulo zosungunuka ndi mankhwala owopsa, zomwe zimapangitsa kuti zikhale zofunikira pakupanga mankhwala ndi zitsulo.

Zinthuzi zimathandizira kusinthasintha kwa mipiringidzo ya molybdenum m'mafakitale ambiri, kuphatikiza zakuthambo, zamagetsi, mphamvu, ndi zitsulo. Kuphatikiza kwapadera kwa mphamvu zotentha kwambiri, kukana kwa dzimbiri, komanso kukhazikika kwamafuta kumapangitsa molybdenum kukhala chinthu chofunikira kwambiri pazogwiritsa ntchito zambiri.

Kodi njira zazikulu zopangira molybdenum bar ndi ziti?

Kupanga kwa mipiringidzo ya molybdenum imakhudza njira zingapo zofunika, iliyonse ili yofunika kwambiri kuti mukwaniritse zomwe mukufuna komanso mawonekedwe a chinthu chomaliza. Njira zazikulu zopangira zinthu ndi izi:

• Kuchotsa zopangira: Njirayi imayamba ndi migodi ya ore yokhala ndi molybdenum, makamaka molybdenite (MoS2). Miyendo imeneyi imatengedwa kudzera m'maenje otseguka kapena pansi pa nthaka.
• Kukonzekera ndi kukhazikika kwa ore: Miyala yokumbidwa imaphwanyidwa, ikupera, ndi kuyandama kuti ilekanitse molybdenite ndi mchere wina. Izi zimapangitsa kuti pakhale molybdenum sulfide wambiri.
• Kuwotcha: The concentrated molybdenum sulfide amawotcha mumpweya wotentha kwambiri (500-700°C) kuti asinthe kukhala molybdenum trioxide (MoO3).
• Kuchepetsa: Molybdenum trioxide imachepetsedwa kukhala ufa wa molybdenum pogwiritsira ntchito mpweya wa haidrojeni pa kutentha kwapakati pa 1000-1200 ° C. Izi nthawi zambiri zimachitika m'magawo angapo kuti zitsimikize kuchepetsedwa.
• Kukonzekera ufa: The kuchepetsedwa molybdenum ufa amakonzedwa mosamala kukwaniritsa kufunika tinthu kukula kugawa ndi milingo chiyero chofunika kupanga bala.
• Powder compaction: Ufa wa molybdenum umaphatikizidwa muzitsulo zobiriwira pogwiritsa ntchito makina osindikizira a hydraulic kapena njira zozizira za isostatic pressing (CIP). Sitepe iyi imapanga wandiweyani, mawonekedwe ofanana muzinthu.
• Sintering: Mipiringidzo yobiriwira yophatikizika imayikidwa mu ng'anjo za hydrogen pa kutentha pafupi ndi malo osungunuka a molybdenum (nthawi zambiri 2000-2200 ° C). Izi zimagwirizanitsa tinthu tating'onoting'ono ta ufa, ndikuwonjezera kachulukidwe ndi mphamvu.
• Ntchito yotentha: Mipiringidzo ya sintered imatha kugwira ntchito zotentha monga kupangira, kugudubuza, kapena kutulutsa kuti apititse patsogolo makina awo ndikukwaniritsa mawonekedwe ndi makulidwe omwe akufuna.
• Chithandizo cha kutentha: Kutengera ndi zofunikira zogwiritsira ntchito, mipiringidzo ya molybdenum imatha kutsata njira zosiyanasiyana zochizira kutentha kuti ziwongolere ma microstructure ndi katundu wawo.
• Kumaliza: Gawo lomaliza limaphatikizapo kukonza, kugaya, kapena ntchito zina zomaliza kuti mukwaniritse zomwe zimafunikira komanso kulolerana kwamitundu.

Iliyonse mwa njirazi imayendetsedwa mosamala kuti iwonetsetse kupanga mipiringidzo yapamwamba ya molybdenum yokhala ndi zinthu zofananira. Magawo ndi njira zomwe zimagwiritsidwa ntchito zimatha kusiyanasiyana kutengera wopanga komanso momwe angagwiritsire ntchito mipiringidzo ya molybdenum.

Kodi njira zosiyanasiyana zopangira zimagwira bwanji ntchito za mipiringidzo ya molybdenum?

Njira zopangira zomwe zimagwiritsidwa ntchito popanga mipiringidzo ya molybdenum zimatha kukhudza kwambiri katundu wawo womaliza komanso mawonekedwe ake. Njira zosiyanasiyana ndi magawo opangira zinthu zimatha kubweretsa kusintha kwa microstructure, makina amakina, komanso mtundu wonse wa mipiringidzo ya molybdenum. Zina mwa njira zazikulu zopangira ndi zotsatira zake pazakudya za molybdenum bar ndi:

• Ufa zitsulo motsutsana ndi kusungunuka ndi kuponyera:
  • Powder metallurgy: Njira iyi, yomwe imaphatikiza ufa wa molybdenum ndi sintering, nthawi zambiri imabweretsa mawonekedwe ofananirako komanso kuwongolera kukula kwambewu. Mipiringidzo ya Molybdenum yomwe imapangidwa kudzera muzitsulo za ufa nthawi zambiri imawonetsa mphamvu zambiri komanso kuwongolera bwino kutentha kwapakati.
  • Kusungunula ndi kuponya: Ngakhale kuti sizodziwika kwambiri chifukwa cha kusungunuka kwa molybdenum, njirayi imatha kutulutsa ingots zazikulu. Komabe, zitha kupangitsa kuti pakhale tsankho komanso kusawoneka bwino kofananira poyerekeza ndi njira zopangira zitsulo.
• Sintering mikhalidwe:
  • Kutentha: Kutentha kwambiri kwa sintering nthawi zambiri kumabweretsa kuchulukana komanso kukula kwambewu. Izi zitha kubweretsa kuwongolera kwamakina koma zitha kuchepetsanso ductility.
  • Nthawi: Kudulira nthawi yayitali kumatha kukulitsa kachulukidwe ndikulimbikitsa kukula kwambewu, zomwe zimatha kuwonjezera mphamvu koma kumachepetsa kulimba.
  • Atmosphere: Kulowa mumlengalenga wa haidrojeni kumathandiza kupewa okosijeni ndikuwonetsetsa chiyero, pomwe sintering ya vacuum ingagwiritsidwe ntchito pazinthu zina.
• Njira zogwirira ntchito:
  • Kupanga: Njirayi imatha kusintha mawonekedwe a mipiringidzo ya molybdenum poyenga kapangidwe ka tirigu ndi kuchuluka kwa kachulukidwe. Mipiringidzo yabodza nthawi zambiri imawonetsa mphamvu zapamwamba komanso isotropy yabwinoko poyerekeza ndi mipiringidzo ngati-sintered.
  • Kugudubuza: Kugudubuzika kotentha kumatha kutulutsa mipiringidzo ya molybdenum yokhala ndi njere yoyengedwa bwino komanso kulimba kwamphamvu pakugudubuzika. Komabe, ikhoza kuyambitsanso anisotropy muzinthu zakuthupi.
  • Extrusion: Njira iyi ikhoza kulenga mipiringidzo ya molybdenum yokhala ndi chigawo chofanana kwambiri komanso kumaliza bwino pamwamba. Mipiringidzo yowonjezera imatha kuwonetsa mphamvu zowonjezera komanso ductility chifukwa cha kuwonongeka kwakukulu kwa pulasitiki komwe kumakhudzidwa ndi ntchitoyi.
• Chithandizo cha kutentha:
  • Recrystallization: Kuwongolera kutentha komwe kumayendetsedwa kungapangitse kukonzanso, zomwe zimapangitsa kuti pakhale yunifolomu ya njere ndikuwongolera ductility. Izi ndizofunikira makamaka pazitsulo za molybdenum zomwe zakhala zikugwira ntchito mozizira kwambiri.
  • Kuchepetsa kupsinjika: Kuchiza kutentha kumatha kugwiritsidwa ntchito kuti muchepetse kupsinjika kwamkati m'mipiringidzo ya molybdenum, kuwongolera kukhazikika kwa mawonekedwe ndikuchepetsa chiwopsezo cha zida zankhondo kapena kusokoneza mukamagwiritsa ntchito.
• Alloying ndi doping:
  • Kuwonjezera zinthu zina zazing'ono (mwachitsanzo, lanthanum oxide, titaniyamu, kapena zirconium) panthawi yokonzekera ufa zingakhudze kwambiri mipiringidzo ya molybdenum. Zowonjezera izi zimatha kupititsa patsogolo mphamvu zotentha kwambiri, kukana kukwawa, komanso machitidwe okonzanso.

Kusankhidwa kwa njira yopangira ndi magawo opangira zimadalira zofunikira zenizeni za ntchito yomaliza. Mwachitsanzo, zida zamumlengalenga zingafunike mipiringidzo ya molybdenum yokhala ndi mphamvu zotentha kwambiri komanso kukana kugwa, pomwe magetsi amatha kuyika patsogolo kuwongolera ndi kuyera. Posankha mosamala ndikukonza njira zopangira, opanga amatha kusintha mawonekedwe a mipiringidzo ya molybdenum kuti akwaniritse zosowa zosiyanasiyana zamafakitale osiyanasiyana.

Pomaliza, kupanga kwa mipiringidzo ya molybdenum ndi njira yovuta yomwe imafuna kuwongolera mosamala ndi kukhathamiritsa pagawo lililonse. Kuchokera pakuchotsa koyambirira kwa miyala ya molybdenum mpaka kumaliza komaliza, gawo lililonse limakhala ndi gawo lofunikira pakuzindikira mtundu ndi mawonekedwe a chinthu chomalizidwa. Pomvetsetsa zovuta za kupanga ndi zotsatira za njira zosiyanasiyana zopangira, akatswiri ndi opanga angapitirize kupititsa patsogolo ntchito ndi kusinthasintha kwa mipiringidzo ya molybdenum, kuonetsetsa kuti akupitirizabe kufunikira kwa ntchito zamakono zamakono.

Ku SHAANXI CXMET TECHNOLOGY CO., LTD, timanyadira zamitundu yathu yayikulu, yomwe imathandizira zosowa zosiyanasiyana zamakasitomala. Kampani yathu ili ndi luso lapadera lopanga ndi kukonza, kuwonetsetsa kuti zinthu zathu ndi zapamwamba komanso zolondola. Ndife odzipereka pazatsopano ndipo timayesetsa mosalekeza kupanga zinthu zatsopano, kutipangitsa kukhala patsogolo pamakampani athu. Ndi luso lotsogola laukadaulo, timatha kusintha ndikusintha msika womwe ukusintha mwachangu. Kuphatikiza apo, timapereka mayankho osinthika kuti akwaniritse zofunikira zamakasitomala athu. Ngati muli ndi chidwi ndi zinthu zathu kapena mukufuna kudziwa zambiri zazomwe timapereka, chonde musazengereze kutilankhula nafe pa sales@cxmet.com. Gulu lathu limakhala lokonzeka nthawi zonse kukuthandizani.

Zothandizira

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4. Primig, S., Leitner, H., Clemens, H., Lorich, A., Knabl, W., & Stickler, R. (2010). Pa khalidwe recrystallization mwaukadaulo koyera molybdenum. International Journal of Refractory Metals and Hard Equipment, 28 (6), 703-708.

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