Bukatun fasaha don piston

1. Zai sami isasshen ƙarfi, ƙwanƙwasa, ƙaramin taro, da nauyi mai sauƙi don tabbatar da ƙaramin ƙarfi mara ƙarfi.
2. Kyakkyawan halayen thermal, babban juriya na zafin jiki, babban matsa lamba, juriya na lalata, isassun iyawar zafi, da ƙananan yanki na dumama.
3. Ya kamata a sami ɗan ƙaramin juzu'i tsakanin fistan da bangon fistan.
4. Lokacin da yawan zafin jiki ya canza, girman da siffar ya kamata ya zama ƙarami, kuma a kiyaye mafi ƙarancin izini tsakanin bangon Silinda da Silinda.
5. Low coefficient na thermal fadadawa, ƙananan ƙayyadaddun nauyi, raguwa mai kyau da ƙarfin zafi.

Matsayin fistan
Tare da ƙaƙƙarfan ƙaƙƙarfan buƙatu don ƙarfi, tattalin arziki, kariyar muhalli, da amincin injin a cikin duka abin hawa, piston ya haɓaka zuwa samfuran fasaha mai ƙarfi wanda ke haɗa sabbin fasahohi da yawa kamar sabbin kayan nauyi da ƙarfi, na musamman. -siffar cylindrical composite surfaces, da musamman-siffa fil ramukan, don tabbatar da zafi juriya, sa juriya, barga shiryarwa, da kyau sealing aiki na piston, rage gogayya aiki asarar na engine, da kuma rage man fetur amo da hayaki.
Domin biyan buƙatun aiki na sama, da'irar waje na fistan yawanci ana tsara su azaman da'irar waje mai siffa ta musamman (convex zuwa elliptical), wato, ɓangaren giciye daidai gwargwado ga axis na piston shine ellipse ko ellipse da aka gyara. kuma ovality yana canzawa tare da jagorar axis bisa ga ƙayyadaddun ƙa'ida (kamar yadda aka nuna a cikin Hoto 1), tare da daidaiton ovality na 0.005mm;Ƙaƙwalwar waje na ɓangaren tsayin piston ƙwanƙwasa ce mai dacewa ta aiki mafi girma, tare da daidaitaccen kwane-kwane na 0.005 zuwa 0.01 mm;Domin inganta ƙarfin ɗaukar fistan da ƙara ƙarfin injin, ramin fil ɗin fistan mai ɗaukar nauyi yawanci ana tsara shi azaman nau'in mazugi na ciki ko nau'in yanayi mai lankwasa na al'ada (ramin fil na musamman), tare da daidaiton girman ramin fil na IT4 da daidaiton kwane-kwane na 0.003mm.
Piston, a matsayin maɓalli na musamman na kera motoci, yana da ƙaƙƙarfan halaye na fasaha a cikin injina.A cikin masana'antar kera piston na cikin gida, layin samar da injina yawanci sun ƙunshi kayan aikin injin gabaɗaya da kayan aiki na musamman waɗanda ke haɗa halayen fasahar piston.
Sabili da haka, kayan aiki na musamman sun zama kayan aiki mai mahimmanci don mashin ɗin piston, kuma aikin sa da daidaito zai shafi kai tsaye ga ma'auni masu inganci na mahimman halaye na samfurin ƙarshe.