Kupanga ndi kupanga zinthu zopanda maginito zolimba alloy ndikuwonetsa kwakukulu kwa zida zatsopano zolimba.Aloyi yolimba amapangidwa ndi sintering ndi refractory zitsulo carbides a IV A, VA, ndi VI A magulu mu periodic tebulo zinthu (monga tungsten carbide WC), ndi kusintha zitsulo gulu chitsulo (cobalt Co, faifi tambala Ni). iron Fe) ngati gawo lolumikizana kudzera mumakampani opanga zitsulo.Tungsten carbide yomwe ili pamwambayi ndi yopanda maginito, pamene Fe, Co, ndi Ni onse ndi maginito.Kugwiritsa ntchito Ni ngati chomangira ndikofunikira kuti mupange ma alloys a nonmagnetic.
Pali njira zotsatirazi zopezera WC Ni mndandanda nonmagnetic hard alloys:1.Yang'anirani mosamalitsa za carbon
Monga WC Co aloyi, zomwe zili mu kaboni ndiye chinthu chachikulu chomwe chimakhudza mphamvu yolimba ya W mu gawo lolumikizana la WC Ni aloyi.Ndiko kuti, kutsika kwa kaboni wa gawo la kaboni pagawo la aloyi, kumapangitsanso mphamvu yolimba ya W mu gawo la Ni bonding, ndi mitundu yosiyanasiyana ya pafupifupi 10-31%.Pamene njira yolimba ya W mu gawo la Ni bonded iposa 17%, aloyiyo imakhala demagnetized.Chofunikira cha njirayi ndikupeza ma aloyi olimba a nonmagnetic pochepetsa zomwe zili mu kaboni ndikuwonjezera njira yolimba ya W mu gawo lolumikizana.Pochita, ufa wa WC wokhala ndi mpweya wocheperako kuposa momwe kaboni umagwiritsidwira ntchito nthawi zambiri, kapena ufa wa W umawonjezeredwa kusakaniza kuti ukwaniritse cholinga chopanga ma alloys a carbon otsika.Komabe, ndizovuta kwambiri kupanga ma aloyi a nonmagnetic pongowongolera zomwe zili mu kaboni.
2. Onjezani chromium Cr, molybdenum Mo, tantalum Ta
Mpweya wochuluka wa carbon WC-10% Ni (wt% ndi kulemera kwake) umasonyeza ferromagnetism kutentha kwapakati.Ngati zoposa 0.5% Cr, Mo, ndi 1% Ta ziwonjezeredwa mumtundu wachitsulo, alloy ya carbon high imatha kusintha kuchoka ku ferromagnetism kupita ku non-magnetism.Powonjezera Cr, mphamvu ya maginito ya alloy imakhala yodziimira pa carbon content, ndipo Cr ndi zotsatira za njira yochuluka yolimba mu gawo logwirizanitsa la alloy, monga W. The alloy ndi Mo ndi Ta akhoza kusintha kukhala alloy alloy. non-magnetic alloy pa zinthu zina za kaboni.Chifukwa cha njira yotsika yolimba ya Mo ndi Ta mu gawo lomangirira, ambiri aiwo amangotenga kaboni mu WC kuti apange ma carbide ogwirizana kapena ma carbide olimba.Zotsatira zake, mawonekedwe a aloyi amasunthira kumbali ya mpweya wochepa, zomwe zimapangitsa kuwonjezeka kwa njira yolimba ya W mu gawo logwirizanitsa.Njira yowonjezerera Mo ndi Ta ndikupeza alloy osagwiritsa ntchito maginito pochepetsa kaboni.Ngakhale sizosavuta kuwongolera monga kuwonjezera Cr, ndikosavuta kuwongolera zomwe zili ndi mpweya kuposa WC-10% Ni alloy.Mitundu yambiri ya kaboni yakulitsidwa kuchokera pa 5.8-5.95% mpaka 5.8-6.05%.
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Contact: Grace Ma
Nthawi yotumiza: Oct-09-2023
