Piston mhete ndeimwe yepakati zvikamu zveinjini. Izvo zvinhu zvemhete yepiston zvinofanirwa kunge zvine simba rakakodzera, kuoma, elasticity uye kuneta kuramba, yakanakisa kupfeka kuramba, kupisa kupisa uye corrosion kuramba. Nekuvandudzwa kweinjini dzemazuva ano kusvika pakumhanya, kukwira, uye kuburitsa kwakaderera, nepo izvo zvinodiwa zvepiston mhete zvinhu zviri kuramba zvichikwira nekukwira, kurapwa kwepamusoro kunoenderana nezvinodiwa zvepamusoro. Kuwedzera kutsva kupisa tekinoroji Yakave kana iri kushandiswa mukupisa kurapwa kwepiston mhete, senge ion nitriding, pamusoro ceramics, nanotechnology, etc. Ichi chinyorwa chinonyanya kusuma infiltration ceramic kurapwa kwepiston mhete.

Piston ring immersion ceramic treatment ndeye yakaderera-tembiricha plasma kemikari vapor deposition tekinoroji (PCVD kwenguva pfupi). Firimu receramic rine huwandu hwema micrometer akawanda rinokura pamusoro pesimbi substrate. Panguva imwechete iyo ceramic inopinda mukati mesimbi yesimbi, iyo ion yesimbi inopindawo mu ceramic Firimu inopinda mukati uye inoumba nzira mbiri-diffusion, ichiva "cermet composite film". Kunyanya, maitiro anogona kukura simbi inoumba ceramic zvinhu pane simbi substrate iyo yakaoma kune semiconductor zvinhu zvakaita sechromium kupararira mukati.

Iyi "metal ceramic composite film" ine zvinotevera maitiro:

1. Kukura pakudziya kwakadzika pasi pe300℃ pasina mhedzisiro yakaipa parin'i yepiston;

2. Simbi iri pamusoro pemhete yepiston inosangana nenzira mbiri ne boron nitride uye cubic silicon nitride mune vacuum plasma state, ichiita zvinhu zvinoshanda ne gradient gradient, saka yakanyatsobatanidzwa;

3. Nekuti iyo ceramic firimu yakaonda uye simbi inoumba oblique gradient inoshanda zvinhu, haingoite basa mukusunga zvakasimba shanduko yekuchinja, asiwo inoshandura kusimba kweceramic bond edge, inovandudza kupeta, uye inovandudza zvakanyanya pamusoro. kuoma uye kuoma kwemhete;

4. Zvirinani kupisa kwekushisa kupfeka kusagadzikana;

5. Kuwedzera antioxidant simba.

Nekuti firimu receramic rine basa rekuzvizora, rin'i yepiston yakamisikidzwa neceramic piston mhete inogona kuderedza friction coefficient yeinjini ne17% 30%, uye huwandu hwekupfeka pakati payo uye friction pair inoderedzwa ne2/ /5 1/2, uye inogona kuderedzwa zvakanyanya. Injini vibration uye ruzha. Panguva imwecheteyo, nekuda kwekushanda kwakanaka kwekuvhara pakati peceramic firimu nejini cylinder liner, avhareji yekudonha kwemhepo yepiston yakadzikirawo ne9.4%, uye simba reinjini rinogona kuwedzerwa ne4.8% 13.3%. Uye chengetedza mafuta 2.2% 22.7%, injini yemafuta 30% 50%.