Chifukwa cha kulephera kwa ntchito ya ndowa ya gear

Mphamvu kusanthula chidebe dzino ntchito nkhope ndi zofukulidwa chinthu kukhudzana, mu ndondomeko wathunthu pofukula mu magawo osiyanasiyana ntchito ya conditioners osiyanasiyana nkhawa.Pamene dzino nsonga choyamba kukhudza zinthu pamwamba, ndowa dzino nsonga imakhudzidwa kwambiri chifukwa cha liwiro lake. Ngati mphamvu yokolola ya mano a ndowa ndi yochepa, kusinthika kwa pulasitiki kudzachitika pamapeto.Ndi kuwonjezeka kwa kukumba kwakuya, kupsinjika kwa mano a ndowa kudzasintha. umapanga lalikulu kwambiri zabwino zabwino extrusion kuthamanga padziko, motero umapanga mikangano yaikulu mphamvu pakati pa chidebe dzino ntchito nkhope ndi material.If zinthu ndi olimba thanthwe, konkire, etc., mikangano idzakhala yaikulu kwambiri. Zotsatira za mobwerezabwereza zochita za ndondomekoyi umatulutsa madigiri osiyanasiyana a padziko kuvala pa chidebe dzino ntchito nkhope, ndiyeno umabala ngalande ndi kuya kwambiri. Chidebe dzino zikuchokera zabwino zimakhudzaKutalika kwa moyo wautumiki wa mano a ndowa, sankhani mano a ndowa, ndithudi osamala kwambiri amagulitsa mano a ndowa Ndinagwiritsanso ntchito mano ake a ndowa, zotsatira zake ndi zabwino! , ndipo nkhope yogwira ntchito yakutsogolo yawonongeka kwambiri.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 zikugwira ntchito motsatira, ndikuzipera kuti ziyesedwe kuuma. zitsanzo zinali pansi, zopukutidwa ndi zowonongeka, ndipo zinapezeka kuti panali malire oonekera pa chitsanzo chilichonse, koma malirewo anali osiyana. chidutswacho chikhoza kukhala 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. Mbali yotsekedwa ndi chipika choyikapo ndipo mbali yozungulira ndi matrix.Zolemba ziwirizi ndizofanana.Waukulu aloyi zikuchokera (chigawo misa, %) ndi 0.38c, 0.91cr, 0.83mn ndi 0.92si.The makina katundu wa zitsulo zipangizo zimadalira zikuchokera ndi kutentha ndondomeko mankhwala.Zofanana zikuchokera ndi kusiyana kuuma zimasonyeza kuti ndowa. mano anagwiritsidwa ntchito popanda kutentha mankhwala pambuyo poponya.Zotsatira za minofu zomwe zimatsimikizira izi.

Bungwe kusanthula metallographic kuonerera anasonyeza kuti gawo lapansi ndi makamaka wakuda zabwino lamellar dongosolo, anapereka chidutswa cha minofu tichipeza mbali ziwiri, fritter woyera chipika ndi wakuda, ndi chipika woyera kutali ndi gawo mtanda gulu gulu kwambiri (ndi zina microhardness mayeso amatsimikizira kuti bungwe la zigamba zoyera za ferrite, mawonekedwe amtundu wakuda wa lamellar wa troostite kapena troostite ndi bungwe losakanizidwa la pearlite. Kutentha kwazitsulo zachitsulo panthawi yoponyera, derali lili mu austenite ndi ferrite magawo awiri, pomwe ferrite imakula bwino ndipo microstructure yake imasungidwa kutentha kwa chipinda. chapakati cha amaika chipika kutentha ndi otsika, palibe ferrite lalikulu aumbike

Mayeso ovala pamakina oyesera a mld-10 akuwonetsa kuti kukana kwa matrix ndikuyika kuli bwino kuposa kuzimitsa zitsulo 45 pansi pa mayeso ang'onoang'ono ovala. ndipo masanjidwewo ndi osamva kuvala kuposa oyikapo (onani tebulo 2) .Zolemba pa mbali zonse za matrix ndi zoyikapo zili pafupi, kotero zitha kuwoneka kuti kuyika mu mano a ndowa makamaka ACTS ngati kuzizira. njira yoponyera, njere ya matrix imayengedwa kuti ikhale ndi mphamvu komanso kuvala kukana.Chifukwa cha mphamvu ya kuponya kutentha, kapangidwe kake kakufanana ndi komwe kumakhudzidwa ndi kutentha komwe kumakhudzidwa.Ngati chithandizo choyenera cha kutentha chikuchitika pambuyo kuponyera kupititsa patsogolo kapangidwe ka matrix ndi kuyika, kukana kuvala ndi moyo wautumiki wa mano a ndowa mwachiwonekere zidzasintha.