Kusintha kwamafuta amafuta a Ford amagetsi amafuta amafuta 1850353

Njira yochizira kutentha

Ambiri a iwo ntchito zotayidwa aloyi katundu maselo, amene ikuchitika pambuyo akusowekapo ndi kukonzedwa mu zinthu zotanuka, makamaka kuphatikizapo n'zosiyana quenching njira, ozizira ndi otentha mkombero njira ndi nthawi zonse kutentha ukalamba njira.

(1) Njira yozimitsira mmbuyo

Imatchedwanso kuzizira kwambiri komanso njira yotenthetsera mwachangu ku China. Ikani aluminium alloy elastic element mu liquid nitrogen pa -196 ℃, sungani kutentha kwa maola 12, ndiyeno muthamangire mwachangu ndi nthunzi yatsopano yothamanga kwambiri kapena muyike m'madzi otentha. Chifukwa kupsinjika komwe kumabwera chifukwa cha kuziziritsa kwambiri komanso kutentha mwachangu kumakhala kolowera mbali zina, amathetsana ndikukwaniritsa cholinga chotulutsa kupsinjika kotsalira. Mayesowa akuwonetsa kuti kupsinjika kotsalira kumatha kuchepetsedwa ndi 84% pogwiritsa ntchito njira yamadzi ya nayitrogeni-yothamanga kwambiri komanso ndi 50% pogwiritsa ntchito njira yamadzi owiritsa a nayitrogeni.

(2) njira yozizira komanso yotentha yozungulira

Njira yozizira ndi yotentha kupalasa njinga bata mankhwala ndi-196 ℃ × 4 maola / 190 ℃ × 4 maola, amene angathe kuchepetsa nkhawa yotsalira ndi pafupifupi 90%, ndipo ali khola dongosolo dongosolo, mkulu kukana mapindikidwe yaying'ono pulasitiki ndi makhalidwe abwino dimensional. bata. Zotsatira za kumasula kupsinjika kotsalira ndizoonekeratu. Choyamba, kutentha kwamphamvu kwa ma atomu kumawonjezeka, kupotoza kwa lattice kumachepa kapena kutha, ndipo kupsinjika kwamkati kumachepa pakutentha. Kutentha kwapamwamba kwa malire, kuwonjezereka kwa kutentha kwa ma atomu, kumapangitsa kuti pulasitiki ikhale yabwino, yomwe imathandizira kumasula kupsinjika kotsalira. Chachiwiri, chifukwa cha kuyanjana pakati pa kupsinjika kwa kutentha ndi kupanikizika kotsalira komwe kumayambitsidwa ndi kutentha kwa kutentha ndi kuzizira, kumagawidwanso ndipo kupanikizika kotsalira kumachepetsedwa.

(3) Njira yokalamba yotentha nthawi zonse

Kukalamba kosalekeza kwa kutentha kumatha kuthetsa kupsinjika kotsalira komwe kumachitika chifukwa cha makina ndi kupsinjika kotsalira komwe kumayambitsidwa ndi chithandizo cha kutentha. Pamene LY12 hard aluminium alloy ndi zaka 200 ℃, ubale pakati pa kumasulidwa kwa nkhawa yotsalira ndi nthawi yokalamba zimasonyeza kuti kupsinjika kotsalira kumatha kuchepetsedwa pafupifupi 50% mutatha kugwira kwa maola 24.