Chifukwa cha kulephera kwa ntchito ya ndowa ya gear

Limbikitsani kusanthula chidebe chidebe chogwira ntchito nkhope ndi kukhudzana ndi chinthu chofukulidwa, muzofukufuku wathunthu m'magawo osiyanasiyana ogwira ntchito zamaganizo osiyanasiyana.Pamene nsonga ya dzino ikakhudza chinthu choyamba, nsonga ya dzino la ndowa imakhudzidwa kwambiri chifukwa cha liwiro lake. Chidebe dzino ndi zinthu zimachitika wachibale kayendedwe, umapanga lalikulu kwambiri zabwino zabwino extrusion kuthamanga pamwamba, motero umapanga mikangano yaikulu mphamvu pakati pa chidebe dzino ntchito nkhope ndi chuma.Ngati zinthu ndi olimba thanthwe, konkire, etc., kukangana adzakhala lalikulu kwambiri. The chifukwa cha zochita mobwerezabwereza za ndondomekoyi umapanga madigiri osiyanasiyana a padziko kuvala pa chidebe dzino ntchito nkhope, ndiyeno zikuchokera waukulu chidebe ntchito kutalika kwa moyo Bucket kuya kwake. mano, sankhani mano a ndowa Inde kusamala kwambiri daddus kugulitsa mano chidebe Ndinagwiritsanso ntchito mano chidebe, zotsatira zake ndi zabwino!Kukakamiza zabwino pa nkhope yogwira ntchito mwachionekere wamkulu kuposa kuti kumbuyo ntchito nkhope, ndi nkhope yogwira ntchito molakwika ankavala. Zitha kuweruzidwa kuti kukakamiza kwabwino ndi mphamvu yolimbana ndi zinthu zazikulu zakunja zamakina zomwe zimalepheretsa mano a ndowa, omwe amathandizira kwambiri pakulephera.

Kusanthula ndondomeko: tengani zitsanzo ziwiri kuchokera kutsogolo ndi kumbuyo kwa nkhope zomwe zimagwira ntchito motsatira, ndi kuzipera kuti ziyesedwe kuti zikhale zovuta. Zimapezeka kuti kuuma kwa chitsanzo chomwecho ndi kosiyana kwambiri, ndipo chigamulo choyambirira ndi chakuti zinthuzo si uniform. ndi mdima, kusonyeza kuti chidutswacho mwina ndi chojambula chokongoletsedwa. Pamwamba, gawo lotsekedwa liyeneranso kukhala chipika chotsekedwa.Mayesero a kuuma kumbali zonse za malire anachitika pa hrs-150 digital display rockwell hardness tester ndi mhv-2000 digital display microhardness tester, ndipo kusiyana kwakukulu kunapezeka. Chigawo chachikulu cha alloy (chigawo cha misa, %) ndi 0.38c, 0.91cr, 0.83mn ndi 0.92si.Makina opangidwa ndi zitsulo zachitsulo amadalira kapangidwe kawo ndi ndondomeko ya kutentha kwa kutentha.Kufanana kofanana ndi kusiyana kwa kuuma kumasonyeza kuti mano a ndowa anagwiritsidwa ntchito popanda chithandizo cha kutentha pambuyo poponya.Zotsatira za minofu zotsatila zimatsimikizira izi.

Bungwe kusanthula kuwunika metallographic anasonyeza kuti gawo lapansi makamaka wakuda zabwino lamellar dongosolo, anapereka chidutswa cha minofu tichipeza mbali ziwiri, fritter woyera chipika ndi wakuda, ndi chipika woyera kutali ndi gawo mtanda dera bungwe zambiri (ndi zina microhardness mayeso zikutsimikizira kuti bungwe kwa zigamba zoyera ferrite, wakuda wabwino lamellar dongosolo la troostite kapena troostite hybrid amaikapo mu bungwe troostite ferrilite chophatikizika amaikapo. ndi ofanana ndi ena gawo kusintha madera kutentha anakhudzidwa zone wa kuwotcherera.Mu zochita za zitsulo madzi kutentha pa kuponya, dera ili mu austenite ndi ferrite magawo awiri gawo zone, kumene ferrite wakula mokwanira ndipo microstructure ake anakhalabe kwa firiji.

Mayeso ovala pa makina oyesera a mld-10 akuwonetsa kuti kukana kwa matrix ndi kuyika kuli bwino kuposa kuzimitsidwa kwazitsulo 45 pansi pa chiyeso chaching'ono cha kuvala.Panthawiyi, kukana kwa matrix ndi kuyikapo kumasiyana, ndipo masanjidwewo ndi osagwirizana kwambiri ndi oyikapo (onani tebulo 2) . Pakuponyera, njere ya matrix imayengedwa kuti ikhale ndi mphamvu komanso kuvala kukana. Chifukwa cha chikoka cha kuponyera kutentha, kapangidwe kake kamakhala kofanana ndi komwe kumakhudzidwa ndi kutentha kwa kutentha komwe kumakhudzidwa.