Ukuhlaziywa kohlelo lokusebenza lweshidi le-bimetallic kusivikeli esishisayo
2022-03-01
Isici esibaluleke kakhulu ku-umvikeli oshisayoi-bimetal. Namuhla, ngizokuthatha ukuze uqonde ukusetshenziswa kwe-bimetal kumvikeli oshisayo.
Indima yeshidi le-bimetal kumvikeli oshisayo yilo: lapho izinga lokushisa lishintsha, ngoba i-coefficient yokwandisa ye-bimetal ephezulu yokwandisa iphakeme kakhulu kune-coefficient yokwandisa yohlangothi oluphansi lokunweba, ukugoba kwenzeka, futhi sisebenzisa lokhu kugoba. umsebenzi. kweumvikeli oshisayo.
Izinto zokusetshenziswa ezishisayo ze-bimetallic zabakhiqizi abahlukahlukene ziyafana ngokuyisisekelo, i-matrix iyingxube yensimbi neyethusi, futhi izakhi ezinjenge-nickel ne-manganese zengezwa ukuze kuguqulwe ama-coefficients awo wokunweba, okuholela ekunwetshweni okuphezulu ohlangothini kanye nama-alloys aseceleni anwebeka kancane, futhi bese kuba yinhlanganisela. I-master alloys kwesinye isikhathi iyengezwa ukuze kuguqulwe ukumelana kwezinto.
Ngaphambi kokuhlanganisa i-umvikeli oshisayo, ukwakheka kweshidi le-bimetallic kuyisinyathelo esibucayi kakhulu. Okokuqala, umugqa we-bimetallic oshisayo ushaywa futhi umbozwe ube yisimo seshidi, bese usungulwe ngaphambili ube yi-disc shape. Ngalesi sikhathi, i-bimetal ye-thermal emise okwesitsha inesenzo esinqunyiwe nokusetha kabusha izinga lokushisa. Imingcele eyinhloko yama-bimetals okufanele icatshangelwe ngaphambi kokushaya: ukugoba okuqondile, i-modulus elastic, ukuqina, ukunemba kwe-dimensional, resistivity, ububanzi bokushisa obusebenzayo. Okokuqala cabangela ububanzi bezinga lokushisa ishidi le-bimetal elingasetshenziswa kulo, bese ucabangela amandla netorque yesenzo okufanele isikhiqize i-bimetal, bese ukhetha imodulus ethile egobayo nenwebekayo. Bese ukhetha usayizi, ubulukhuni kanye ne-elastic modulus ye-bimetal eshisayo efanele inqubo yokubumba efanele kanye nemishini. Bese ukhetha i-resistivity efanele ngokuya ngezidingo zesikhathi samanje zomvikeli kanye nomthelela we-cavity umthamo wokushisa.
Ngokusho kwefomula ye-thermal effect yamanje ye-bimetal ethi Q=∫t0I2Rdt, kungaziwa ukuthi ukukhetha i-bimetal enokumelana okuphezulu kuzokhiqiza ukushisa okwengeziwe, kufinyeze isikhathi sokusebenza somvikeli oshisayo, futhi kunciphise ubuncane bokusebenza bamanje. Okuphambene kuyiqiniso kuma-bimetals anokumelana okuphansi. Ukumelana kwe-bimetal kuthinteka yi-resistivity, ubukhulu nobukhulu bomumo.
Indima yeshidi le-bimetal kumvikeli oshisayo yilo: lapho izinga lokushisa lishintsha, ngoba i-coefficient yokwandisa ye-bimetal ephezulu yokwandisa iphakeme kakhulu kune-coefficient yokwandisa yohlangothi oluphansi lokunweba, ukugoba kwenzeka, futhi sisebenzisa lokhu kugoba. umsebenzi. kweumvikeli oshisayo.
Izinto zokusetshenziswa ezishisayo ze-bimetallic zabakhiqizi abahlukahlukene ziyafana ngokuyisisekelo, i-matrix iyingxube yensimbi neyethusi, futhi izakhi ezinjenge-nickel ne-manganese zengezwa ukuze kuguqulwe ama-coefficients awo wokunweba, okuholela ekunwetshweni okuphezulu ohlangothini kanye nama-alloys aseceleni anwebeka kancane, futhi bese kuba yinhlanganisela. I-master alloys kwesinye isikhathi iyengezwa ukuze kuguqulwe ukumelana kwezinto.
Ngaphambi kokuhlanganisa i-umvikeli oshisayo, ukwakheka kweshidi le-bimetallic kuyisinyathelo esibucayi kakhulu. Okokuqala, umugqa we-bimetallic oshisayo ushaywa futhi umbozwe ube yisimo seshidi, bese usungulwe ngaphambili ube yi-disc shape. Ngalesi sikhathi, i-bimetal ye-thermal emise okwesitsha inesenzo esinqunyiwe nokusetha kabusha izinga lokushisa. Imingcele eyinhloko yama-bimetals okufanele icatshangelwe ngaphambi kokushaya: ukugoba okuqondile, i-modulus elastic, ukuqina, ukunemba kwe-dimensional, resistivity, ububanzi bokushisa obusebenzayo. Okokuqala cabangela ububanzi bezinga lokushisa ishidi le-bimetal elingasetshenziswa kulo, bese ucabangela amandla netorque yesenzo okufanele isikhiqize i-bimetal, bese ukhetha imodulus ethile egobayo nenwebekayo. Bese ukhetha usayizi, ubulukhuni kanye ne-elastic modulus ye-bimetal eshisayo efanele inqubo yokubumba efanele kanye nemishini. Bese ukhetha i-resistivity efanele ngokuya ngezidingo zesikhathi samanje zomvikeli kanye nomthelela we-cavity umthamo wokushisa.
Ngokusho kwefomula ye-thermal effect yamanje ye-bimetal ethi Q=∫t0I2Rdt, kungaziwa ukuthi ukukhetha i-bimetal enokumelana okuphezulu kuzokhiqiza ukushisa okwengeziwe, kufinyeze isikhathi sokusebenza somvikeli oshisayo, futhi kunciphise ubuncane bokusebenza bamanje. Okuphambene kuyiqiniso kuma-bimetals anokumelana okuphansi. Ukumelana kwe-bimetal kuthinteka yi-resistivity, ubukhulu nobukhulu bomumo.
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