Mitundu yolimba ya alloy, yomwe imadziwika kuti "mayi wamakampani," imathandiza kwambiri kupanga zamakono.Koma kodi nkhungu zinayamba kukhalapo bwanji, ndipo zinayamba liti?
(1) Kupititsa patsogolo Mphamvu Zogwira Ntchito monga Social Foundation for Mold Creation
Kugwiritsiridwa ntchito kwa nkhungu kumapangidwira kubwereza zinthu zofanana, potero kumapangitsa kuti ntchito ikhale yabwino komanso yabwino.Mmodzi wa anthu amene anayambitsa chiphunzitso cha Marx, Friedrich Engels, wanthanthi, woganiza bwino, ndi wosintha zinthu wa ku Germany ananenapo kuti: “Pakadzafunika luso laukadaulo m’chitaganya, kufunikira kumeneku kudzapititsa patsogolo sayansi mayunivesite oposa khumi.”Pamene anthu afika pamlingo wina wa chitukuko ndipo anthu amafuna kwambiri kugwiritsa ntchito zinthu zofanana, zokhala ndi luso lofananira ndi zipangizo, nkhungu zimakhalapo.
(2) Kupeza ndi Kugwiritsa Ntchito Mkuwa monga Maziko a Zinthu Zopangira Ma Hard Alloy Mold Creation.
Akatswiri ena amakhulupirira kuti kubadwa kwenikweni kwa nkhungu kunachitika mu Bronze Age, pafupifupi zaka 5000 mpaka 7000 zapitazo.Nthawi imeneyi inali yokhudzana ndi kugwiritsa ntchito mkuwa ngati chinthu choyambirira popanga zida zosiyanasiyana zopangira, ziwiya zatsiku ndi tsiku, ndi zida, monga magalasi amkuwa, miphika, ndi malupanga.Panthawiyi, zofunikira zopangira nkhungu zolimba za alloy zinalipo kale, kuphatikizapo teknoloji ya metallurgical, kupanga misa, ndi zokambirana.Komabe, kupanga nkhungu panthawiyi kunali kudakali koyambirira komanso kunali kutali kwambiri.
Kubwera kwa nkhungu kwawonetsa gawo lofunika kwambiri m'mbiri ya anthu, kusintha njira zopangira zinthu komanso kulimbikitsa anthu kupita patsogolo paukadaulo ndi kuchuluka kwa zokolola.Kwa zaka zambiri, chitukuko ndi kukonzanso nkhungu zapitirizabe kuumba mafakitale osiyanasiyana, zomwe zathandiza kuti dziko likhale losinthika nthawi zonse la kupanga nkhungu zamakono.
Kuchita kwa hard alloy mold materials kumaphatikizapo makina, katundu wotentha kwambiri, katundu wa pamwamba, processability, ndi chuma, pakati pa ena.Mitundu yosiyanasiyana ya nkhungu imakhala ndi mikhalidwe yosiyanasiyana yogwirira ntchito, zomwe zimapangitsa kuti pakhale zofunikira zosiyana pakuchita zinthu.
1. Kwa nkhungu zozizira zogwira ntchito, kuuma kwakukulu, mphamvu, ndi kukana kuvala bwino ndizofunikira.Kuphatikiza apo, ayenera kukhala ndi mphamvu zopondereza kwambiri, kulimba kwabwino, komanso kukana kutopa.
2. Pankhani ya nkhungu yotentha yogwira ntchito molimbika, kuwonjezera pa kutentha kozungulira, ziyenera kuwonetsa kukana kwa dzimbiri, kukhazikika kwa kutentha, kukana kwa makutidwe ndi okosijeni, komanso kutopa kwa kutentha.Zimafunikanso kuti azikhala ndi kachulukidwe kakang'ono kakuwonjezera kutentha komanso kuwongolera bwino kwamafuta.
3. Pabowo la nkhungu liyenera kukhala lolimba mokwanira ndikusunga kulimba komanso kukana kuvala.
Ziungwe zotulutsa mphamvu zamagetsi zimagwira ntchito movutirapo, zomwe zimafuna kuti nkhungu zolimba za alloy zizikhala bwino, kukana kutentha, mphamvu zopondereza, komanso kukana kwa okosijeni, pakati pazinthu zina.
Nthawi yotumiza: Aug-02-2023
