I-Granite VS cast iron: Umehluko ekuwohlokeni kokushisa phakathi kwezinto ezimbili ngemva kokusebenza okuqhubekayo amahora angu-8 ukalwe kusetshenziswa isithwebuli sesithombe esishisayo.

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Emkhakheni wokukhiqiza nokuhlola ngokunemba, ukusebenza kwe-thermal deformation yezinto ezibonakalayo kuyisici esibalulekile esinquma ukunemba nokuthembeka kwemishini. I-Granite ne-cast iron, njengezinto ezimbili ezisetshenziswa kakhulu eziyisisekelo zezimboni, zidonse ukunaka okukhulu ngomehluko wazo wokusebenza ezindaweni ezinezinga eliphezulu lokushisa. Ukuze sethule ngokubukeka izici zokuguga okushisayo kwakho kokubili, sisebenzise isithombe esichwepheshile esishisayo ukwenza uhlolo oluqhubekayo lwamahora angu-8 ku-granite nezinkundla zensimbi ezisansimbi zesimiso esifanayo, siveze umehluko wangempela ngedatha nezithombe. .

Idizayini yokuhlola: Lingisa izimo zokusebenza ezinzima futhi uthwebule ngokunembile umehluko
Kulesi sivivinyo, kukhethwe amapulatifomu e-granite nensimbi enobukhulu obungu-1000mm×600mm×100mm. Endaweni yokulingisa indawo yokusebenzela yezimboni (izinga lokushisa elingu-25±1℃, umswakama 50%±5%), ngokusabalalisa ngokulinganayo imithombo yokushisa endaweni yesikhulumi (silingisa isizukulwane sokushisa ngesikhathi sokusebenza kwemishini), inkundla yasebenza ngokuqhubekayo ngamandla angu-100W amahora angu-8. Isithombe esishisayo se-FLIR T1040 (esinokulungiswa kwezinga lokushisa okungu-0.02℃) kanye nenzwa yokususwa kwe-laser enembayo ephezulu (ngokunemba okungu-±0.1μm) kwasetshenziswa ukuqapha ukusatshalaliswa kwezinga lokushisa nokuguqulwa kwendawo yesikhulumi ngesikhathi sangempela, futhi idatha yayirekhodwa kanye njalo emizuzwini engama-30. .
Imiphumela elinganisiwe: Bona ngeso lengqondo umehluko wezinga lokushisa futhi ulinganise igebe lokuguquguquka
Idatha evela kumthwebuli wesithombe esishisayo ibonisa ukuthi ngemuva kokuthi inkundla yensimbi eyinsimbi isisebenze ihora elilodwa, izinga lokushisa eliphezulu lifinyelele ku-42℃, okuyi-17℃ ngaphezu kwezinga lokushisa lokuqala. Emahoreni ayisishiyagalombili kamuva, izinga lokushisa lenyuka laya ku-58℃, futhi kwavela ukusatshalaliswa kwezinga lokushisa okuhlukile, nomehluko wokushisa ongu-8℃ phakathi konqenqema nendawo ephakathi. Inqubo yokushisa yesikhulumi se-granite imnene kakhulu. Izinga lokushisa likhuphuka kuphela libe ngu-28℃ ngemva kwehora elingu-1 futhi lizinza ku-32℃ ngemva kwamahora angu-8. Umehluko wezinga lokushisa elingaphezulu ulawulwa ngaphakathi kuka-2 ℃. .
Ngokusho kwedatha ye-deformation, kungakapheli amahora angu-8, ukuguqulwa okuqondile endaweni emaphakathi yesikhulumi se-cast iron kufinyelele ku-0.18mm, futhi ukuguqulwa kwe-warping emaphethelweni kwakungu-0.07mm. Ngokuphambene, ukuwohloka okuphezulu kweplathifomu yegwadle kungu-0.02mm kuphela, ngaphansi kuka-1/9 waleyo yensimbi ekhonjiwe. Ijika lesikhathi sangempela lenzwa yokususwa kwe-laser liphinde liqinisekise lo mphumela: Ijika lokuguquguquka leplathifomu yensimbi ekhonjiwe lishintshashintsha kakhulu, kuyilapho ijika leplathifomu yegwadle icishe izinze, ibonisa ukuzinza okuqinile okushisayo. .
Ukuhlaziywa kwesimiso: Izakhiwo zezinto ezibonakalayo zinquma umehluko ekuguqukeni kokushisa
Umsuka we-thermal deformation ebalulekile ye-cast iron ilele ku-coefficient yayo ephezulu uma kuqhathaniswa yokwanda okushisayo (cishe u-10-12 × 10⁻⁶/℃), kanye nokusatshalaliswa okungalingani kwe-graphite ngaphakathi, okuholela emazingeni okuqhuba ukushisa okungaguquki kanye nokwakheka kokugxiliswa kokucindezeleka okushisayo kwendawo. Ngaleso sikhathi, insimbi ewugqinsi inomthamo wokushisa othize ophansi, futhi izinga lokushisa layo likhuphuka ngokushesha lapho limunca inani elifanayo lokushisa. Ngokuphambene, i-coefficient yokunwetshwa kwe-thermal ye-granite kuphela (4-8) ×10⁻⁶/℃. Isakhiwo sayo sekristalu siminyene futhi siyafana, sinokushisa okuphansi nokusatshalaliswa ngokulinganayo. Ngokuhambisana nesici sayo esiphezulu somthamo wokushisa, isengakwazi ukugcina ukuzinza kobukhulu ezindaweni ezinethempelesha eliphezulu. .
Ukukhanyiselwa kohlelo lokusebenza: Ukukhetha kunquma ukunemba, ukuzinza kudala inani
Kumathuluzi afana namathuluzi omshini wokunemba kanye nemishini yokulinganisa emithathu, ukuwohloka okushisayo kwezisekelo zensimbi kungaholela ekucubunguleni noma ekuhloleni amaphutha, okuthinta isivuno semikhiqizo efanelekile. Isisekelo se-granite, esinokuzinza kwayo okushisayo okuvelele, singaqinisekisa ukuthi izinto zokusebenza zigcina ukunemba okuphezulu ngesikhathi sokusebenza isikhathi eside. Ngemuva kokuthi inkampani ethile ekhiqiza izingxenye zezimoto ithathe indawo yesikhulumi sensimbi esakhiwe nge-granite, izinga lephutha lobukhulu bezingxenye ezinemba lehle lisuka ku-3.2% laya ku-0.8%, futhi ukusebenza kahle kokukhiqiza kwenyuke ngo-15%. .
Ngesethulo esinembile kanye nesilinganiso esinembile somfanekiso oshisayo, umehluko ekuwohlokeni kokushisa phakathi kwegranite nensimbi ewugqinsi ubonakala ngokushesha. Embonini yesimanje ephishekela ukunemba okuphelele, ukukhetha izinto zegwadle ezinokuzinza okuqinile kokushisa ngokungangabazeki kuyisinyathelo esihlakaniphile sokuthuthukisa ukusebenza kwemishini nokuqinisekisa ikhwalithi yomkhiqizo.