Chithandizo cha kutentha pa Idler Assy kwa crawler track undercarriage

Pamene assy waulesi atakhazikika, ming'alu yoyera nthawi zambiri imapangidwa pamwamba ndi zigawo zoonda.
Kapangidwe ka pakamwa koyera ndi kolimba komanso konyowa, kopanda ntchito bwino komanso kosavuta kupukuta.
Choncho, annealing (kapena normalizing) ayenera kugwiritsidwa ntchito kuthetsa woyera pakamwa minofu.Njira yowotchera ndi: Kutentha mpaka 550-950 ℃ kwa maola 2-5, kenako kuzirala kwa ng'anjo mpaka 500-550 ℃ kenako kuzirala kwa mpweya.Munthawi yotentha kwambiri, simenti yotentha kwambiri ndi simenti ya eutectic idawonongeka kukhala graphite ndi A, ndipo simenti yachiwiri ndi simenti ya eutectoid idawolanso panthawi yozizira, zomwe zidapangitsa kuti pakhale graphitization.Chifukwa cha kuwonongeka kwa simenti, kuuma kumachepa, potero kumapangitsa machinability.

Normalizing wa ductile iron
Cholinga cha ductile chitsulo normalizing ndi kupeza pearlite masanjidwewo kapangidwe, yeretsani njere ndi yunifolomu dongosolo, kuti patsogolo makina katundu Dandong zitsulo castings.Nthawi zina normalizing ndi yokonza ductile chitsulo pamwamba quenching pa dongosolo, normalizing lagawidwa mu mkulu kutentha normalizing ndi otsika kutentha normalizing.Kutentha kwapamwamba kwa normalizing kutentha nthawi zambiri sikudutsa 950 ~ 980 ℃, ndi kutentha kochepa komwe kumapangidwira nthawi zambiri kumatenthedwa ndi kutentha kwapakati pa 820 ~ 860 ℃.Pambuyo pa normalizing, anthu anayi nthawi zambiri amayenera kuthana nawo kuti athetse kupsinjika kwamkati komwe kumachitika panthawi yokhazikika.

kuuma pamwamba
Pofuna kukonza kuuma kwa pamwamba, kukana kuvala komanso kutopa kwamagulu ena owongolera magudumu, kuzimitsa pamwamba kungagwiritsidwe ntchito.Zonse ziwiri za chitsulo chotuwira ndi chitsulo cha ductile zimatha kulimba.Nthawi zambiri, kuzimitsa kwapamwamba (zapakatikati) pafupipafupi komanso kuzimitsa kwamagetsi kumagwiritsidwa ntchito.

Chipolopolo chamtundu wa bokosi cha idler chimapangidwa ndikupangidwa ndi mchenga wa alkali phenolic resin kapena mchenga wagalasi lamadzi.Pambuyo pa matrix normalizing ndi njanji yapakatikati kulowetsedwa kwafupipafupi kuzimitsa kutentha, kuuma kwapamtunda kumafika pa HRC48-58, ndipo kuya kowumitsa kumakhala pamwamba pa 4-6mm (HRC45).Ili ndi mphamvu yopirira kukhudzidwa kwakukulu komanso kukana kuvala chifukwa cha zovuta zogwirira ntchito.