A karkashin amfani na yau da kullun, guduma mai karya hakowa zai yi aiki kusan shekaru uku, kuma za a sami raguwar ingancin aikin. Wannan shi ne saboda a cikin aikin, yanayin waje na piston da silinda jiki lalacewa, don haka rata na asali ya karu, yawan zubar da man fetur yana karuwa, matsa lamba yana raguwa, sakamakon tasirin makamashi na hammatar fashewa yana raguwa, kuma an rage ingancin aikin.
A cikin ɗaiɗaikun lokuta, saboda rashin amfani da ma'aikacin ba daidai ba, lalacewa na sassan yana haɓaka. Misali: sawa na wucin gadi na hannun rigar jagora na sama da na ƙasa, asarar tasirin jagora, axis na sandar rawar soja da karkatar piston, piston a cikin aikin buga sandar rawar soja, ƙarfin waje da aka samu ta ƙarshen fuska. ba ƙarfin tsaye ba ne, amma wani kusurwa na ƙarfin waje da tsakiyar layi na piston, ƙarfin za a iya bazuwa a cikin motsi na axial da ƙarfin radial. Ƙarfin radial yana sa fistan ya karkata zuwa gefe ɗaya na shingen Silinda, tazarar asali ta ɓace, fim ɗin mai ya lalace, kuma an sami busassun gogayya, wanda ke hanzarta lalacewa na piston da ramin da ke cikin silinda, kuma rata tsakanin fistan da silinda toshe yana ƙaruwa, yana haifar da ƙara yawan ɗigogi da tasirin hammatar fashewar hakowa ya ragu.
Abubuwan da ke sama sune manyan dalilan da ke haifar da raguwar ingancin hammatar fashewa.
Al'ada ce ta gama gari don maye gurbin saitin pistons da hatimin mai, amma kawai maye gurbin sabon fistan ba zai magance matsalar gaba ɗaya ba. Saboda an sa silinda, girman diamita na ciki ya zama mafi girma, diamita na ciki na silinda ya karu da zagaye da taper, rata tsakanin silinda da sabon piston ya wuce rata na ƙira, don haka ingantaccen guduma mai karya. ba za a iya dawo da shi gabaɗaya ba, ba wai kawai ba, har ma saboda sabon fistan da silinda da aka sawa suna aiki tare, saboda an saka silinda, ƙarancin saman waje ya karu, wanda zai hanzarta lalacewa na sabon fistan. Idan an maye gurbin taron tsakiyar Silinda, ba shakka, shine mafi kyawun sakamako. Duk da haka, shingen Silinda na hammer break hammer shine mafi tsada a cikin dukkanin sassan, kuma farashin maye gurbin sabon ginin silinda ba shi da arha, yayin da farashin gyaran shingen silinda ya yi kadan.
A Silinda na excavator karya guduma ne carburized a cikin samar, da babban matakin da carburizing Layer ne game da 1.5 ~ 1.7mm, da taurin bayan zafi magani ne 60 ~ 62HRC. Gyara shine don sake yin niƙa, kawar da alamun lalacewa (ciki har da fashewa), gabaɗaya suna buƙatar niƙa 0.6 ~ 0.8mm ko makamancin haka (gefen 0.3 ~ 0.4mm), asalin taurare Layer har yanzu kusan 1mm, don haka bayan sake niƙa Silinda, An tabbatar da taurin saman, don haka juriya na juriya na ciki na silinda da sabon samfurin ba shi da bambanci sosai, lalacewa na silinda yana yiwuwa a gyara sau ɗaya.
Bayan an gyara silinda, girmansa zai canza. Don tabbatar da cewa tasirin tasirin ƙirar asali na asali ya kasance baya canzawa, dole ne a sake tsarawa da ƙididdige yanki na gaba da baya na Silinda. A gefe guda, ya zama dole don tabbatar da cewa rabon yanki na gaba da baya baya canzawa tare da ƙirar asali, kuma yankin gaba da baya shima ya dace da asalin asalin, in ba haka ba zazzagewar za ta canza. . Sakamakon haka shine kwararar guduma mai karya guduma da na'ura mai ɗaukar nauyi ba su daidaita daidai ba, yana haifar da mummunan sakamako.
Saboda haka, ya kamata a shirya wani sabon fistan bayan gyaran gyare-gyaren silinda don dawo da gibin ƙira sosai, ta yadda za'a iya dawo da ingantaccen aiki na hamma mai fashewa.
Lokacin aikawa: Agusta-23-2024