AISI 4140 Chitsulo 1.7225 42CrMo4 SCM440

AISI 4140 Alloy Steel ndi chitsulo chodziwika bwino cha chromium-molybdenum chomwe nthawi zambiri chimagwiritsidwa ntchito chikazimitsidwa ndi kupsya mtima, cholimba kwambiri, cholimba kwambiri. Mbale ya alloy 4140 ilinso ndi mphamvu yakutopa kwambiri komanso kulimba kwamatenthedwe otsika.

Gnee ali ndi mwayi waukulu pa mbale yachitsulo ya 4140:

• 1500+ matani tsiku lililonse a 4140 aloyi mbale kapena bala lathyathyathya.
• Hot adagulung'undisa / annealed / Q+T (PH prehardened) chikhalidwe zilipo.
• Kunenepa 4-300mm kukupezeka kwa kutumiza kwa masiku 1-3.
• Makulidwe 1-10mm ozizira adagulung'undisa pepala kwa 30 masiku kutsogolera.
• Dulani m'lifupi & kudula mpaka kutalika kwa utumiki womwe ulipo.
• Utumiki wopangidwa ndi tolerance & roughness zidutswa zilipo.

Pokambirana za AISI 4140, ndikofunikira kuti mumvetsetse tanthauzo la girediyo:

AISI 4140 imapangidwa poyika chitsulo, kaboni, ndi zinthu zina za alloying mu ng'anjo yamagetsi kapena ng'anjo ya oxygen. Zinthu zazikuluzikulu zomwe zawonjezeredwa ku AISI 4140 ndi:

• Chromium
• Manganese
• Molybdenum

Iron, carbon, ndi zinthu zina zosakaniza zikasakanizidwa pamodzi mu mawonekedwe amadzimadzi, zimaloledwa kuzizira. Chitsulocho chikhoza kutsekedwa; mwina kangapo.

Pambuyo pomaliza, chitsulocho chimatenthedwa kuti chisungunukenso kuti chitsanulire mu mawonekedwe omwe mukufuna ndipo chikhoza kutenthedwa kapena kuzizira pogwiritsa ntchito ma roller kapena zida zina kuti mufike ku makulidwe omwe mukufuna. Zachidziwikire, pali ntchito zina zapadera zomwe zitha kuwonjezeredwa ku izi kuti muchepetse mphero kapena kukonza makina.

AISI 4140 ndi chitsulo chochepa cha alloy. Zitsulo zochepa za alloy zimadalira zinthu zina osati chitsulo ndi kaboni kuti ziwongolere magwiridwe antchito awo. Mu AISI 4140, zowonjezera za chromium, molybdenum, ndi manganese zimagwiritsidwa ntchito kuonjezera mphamvu ndi kuuma kwachitsulo. Zowonjezera za chromium ndi molybdenum ndichifukwa chake AISI 4140 imatengedwa ngati chitsulo cha "chromoly".

Pali zinthu zingapo zofunika zamakina za AISI 4140, kuphatikiza:

• Kulimba Kwamphamvu: Chitsulo cha AISI 4140 nthawi zambiri chimakhala ndi mphamvu zolimba kwambiri zofikira 95,000 psi.
• Kulimba mtima
• Ductility
• Kuuma mtima

Gome lomwe lili pansipa likuwonetsa kapangidwe kake ka AISI 4140:

Kuphatikiza kwa chromium ndi molybdenum kumathandizira kukana dzimbiri. Molybdenum imatha kukhala yothandiza kwambiri poyesa kukana dzimbiri chifukwa cha ma chloride. Manganese mu AISI 4140 amagwiritsidwa ntchito kuonjezera kuuma komanso ngati deoxidizer. Muzitsulo za aloyi, manganese amathanso kuphatikiza ndi sulfure kuti apititse patsogolo machinability ndikupanga njira yopangira carburizing kukhala yogwira mtima.