Kodi njira zopangira thovu la mkuwa ndi ziti?
Thovu la mkuwandi chinthu chatsopano chogwiritsidwa ntchito m'njira zambiri. Kodi chimapangidwa bwanji? Ndipotu, monga chitsulo china chilichonse Thovus, thovu la mkuwa limagwiritsa ntchito mkuwa ngati maziko ake. Pakupanga, ma pores ambiri olumikizana kapena osalumikizana amagawidwa mofanana mu gawo lonse la mkuwa.
Thovu la mkuwa silimangokhala ndi ubwino wa zitsulo za thovu komanso limalandira mphamvu za mkuwa. Mwachitsanzo, limasonyeza mphamvu yamagetsi yabwino kwambiri komanso kusinthasintha kwake. Poyerekeza ndi thovu la nikeli, thovu la mkuwa limapereka ndalama zochepa zopangira komanso kuthekera kogwiritsa ntchito bwino. Komabe, popeza thovu la mkuwa ndi mkuwa zimafanana ndi zomwe zili mu mkuwa, zimafanana ndi zovuta za kukana dzimbiri. Pansipa, tikufotokoza njira zopangira ndi njira zopangira thovu la mkuwa:
1. Ufa Njira Yopangira Zitsulo
Njira imeneyi imaphatikizapo kuwonjezera zinthu zotulutsa thovu nthawi zonse ku mkuwa wophwanyika. Zinthu zotulutsa thovu zikaphwanyika, zimasiya ma pores kuti apange thovu la mkuwa.
2. Njira Yogwiritsira Ntchito Ma Electrochemical
Mkuwa wopangidwa ndi thovu wopangidwa kudzera mu njirayi umakhala ndi mawonekedwe ofanana komanso ma porosity a pafupifupi 95%, zomwe zimapangitsa kuti ukhale woyenera kupanga chitsulo chopangidwa ndi thovu.
3. Njira yochotsera madzi m'thupi pogwiritsa ntchito sintering
Poyerekeza ndi njira ziwiri zapitazi, njira iyi ndi yovuta kwambiri. Choyamba, ufa wa mkuwa wa electrolytic, sodium chloride granules, ndi zowonjezera zosiyanasiyana zimasakanizidwa. Kenako chisakanizocho chimakanikizidwa kukhala chobiriwira. Chobiriwira ichi chimasungunuka mumlengalenga wa argon, ndipo mankhwalawa amasungunuka mu bafa lamadzi otentha ozungulira. Pambuyo posungunuka, zinthuzo zimatsukidwa ndi ultrasound bafa ndikutsukidwa ndi acetone. Pambuyo potsukidwa, zimauma kuti zipange kapangidwe kotseguka. Komabe, njira iyi imapereka chiŵerengero cha porosity cha 50-81% chokha, ndi kukula kwapakati kwa pores kuyambira 0.2 mpaka 4 mm.
Pakadali pano, ambiri thovu la mkuwa Kupanga kumagwiritsa ntchito njira zitatu zomwe zili pamwambapa. Kuyika zitsulo za ufa ndi electrochemical ndi njira zomwe zimagwiritsidwa ntchito kwambiri popanga zinthu. Ngakhale kuti zitsulo za thovu zili ndi ubwino ndi magwiridwe antchito ambiri, chifukwa cha kuthekera kwakukulu kogwiritsa ntchito, kuchepetsa ndalama zopangira ndikuwongolera njira zopangira zinthu kwakhala mavuto asayansi omwe amafuna kuthetsedwa.
