Kwicandelo lokuvelisa nokuhlola ngokuchanekileyo, ukusebenza kokuguquguquka kobushushu bezinto zezixhobo yinto ephambili emisela ukuchaneka nokuthembeka kwezixhobo. I-Granite kunye ne-cast iron, njengezixhobo ezimbini ezisetyenziswa rhoqo kwimizi-mveliso, zitsale ingqalelo enkulu ngenxa yokwahluka kwazo ekusebenzeni kwiindawo ezinobushushu obuphezulu. Ukuze sibonise ngokubonakalayo iimpawu zokuguquguquka kobushushu bazo zombini, sisebenzise i-thermal imager yobungcali ukwenza uvavanyo oluqhubekayo lweeyure ezisi-8 kumaqonga e-granite kunye ne-cast iron aneenkcazo ezifanayo, sityhila umahluko wokwenyani ngedatha kunye nemifanekiso.
Uyilo lovavanyo: Lingisa iimeko zokusebenza ezinzima kwaye ubambe ngokuchanekileyo umahluko
Kolu vavanyo, kukhethwe amaqonga egranite kunye nesinyithi esityhidiweyo anobukhulu obuyi-1000mm×600mm×100mm. Kwindawo yokusebenzela yemizi-mveliso eyenziwe ngokulinganisa (ubushushu obuyi-25±1℃, umswakama obuyi-50%±5%), ngokusasaza ngokulinganayo imithombo yobushushu kumphezulu weqonga (ukulinganisa ukuveliswa kobushushu ngexesha lokusebenza kwezixhobo), iqonga lisebenza ngokuqhubekayo kumandla e-100W kangangeeyure ezi-8. I-FLIR T1040 thermal imager (enesisombululo sobushushu esiyi-0.02℃) kunye ne-high-precision laser displacement sensor (ene-accuracy ye-±0.1μm) zisetyenzisiwe ukujonga ukusasazwa kobushushu kunye nokuguqulwa komphezulu weqonga ngexesha langempela, kwaye idatha yarekhodwa kanye emva kwemizuzu engama-30.
Iziphumo ezilinganisiweyo: Jonga umahluko wobushushu uze ulinganise umsantsa wokuguquguquka
Idatha evela kwi-thermal imager ibonisa ukuba emva kokuba iqonga lesinyithi eliphoswe lisebenze iyure enye, ubushushu obuphezulu bomphezulu bufikelele kwi-42℃, eliyi-17℃ ephezulu kunobushushu bokuqala. Emva kweeyure ezisibhozo, ubushushu bunyuke baya kwi-58℃, kwaye kwavela usasazo olucacileyo lobushushu, kunye nomahluko wobushushu we-8℃ phakathi komphetho kunye nombindi. Inkqubo yokufudumeza yeqonga le-granite ithambile ngakumbi. Ubushushu bunyuka bufike kwi-28℃ emva kweyure e-1 kwaye buzinza kwi-32℃ emva kweeyure ezi-8. Umahluko wobushushu bomphezulu ulawulwa ngaphakathi kwe-2℃.
Ngokwedatha yokuguqulwa, kwiiyure ezisi-8, ukuguquka okuthe nkqo kwindawo ephakathi yeqonga lesinyithi esityhidiweyo kufikelele kwi-0.18mm, kwaye ukuguquka okugobileyo kumphetho kwakuyi-0.07mm. Ngokwahlukileyo koko, ukuguquka okuphezulu kweqonga le-granite yi-0.02mm kuphela, ngaphantsi kwe-1/9 yelo lesinyithi esityhidiweyo. Ijika lexesha langempela le-sensor yokufuduka kwe-laser ikwaqinisekisa esi siphumo: Ijika le-deformation yeqonga lesinyithi esityhidiweyo liyatshintshatshintsha kakhulu, ngelixa ijika leqonga le-granite liphantse lizinze, libonisa uzinzo olunamandla kakhulu lobushushu.
Uhlalutyo olusisiseko: Iimpawu zezinto ezibonakalayo zichonga umahluko kwi-thermal deformation
Ingongoma ebalulekileyo yokuguquka kobushushu kwesinyithi esityhidiweyo ikwi-coefficient yayo ephezulu yokwanda kobushushu (malunga ne-10-12 × 10⁻⁶/℃), kunye nokusasazwa okungalinganiyo kwe-graphite ngaphakathi, okubangela isantya sokuqhuba ubushushu esingahambelaniyo kunye nokwakheka koxinzelelo lobushushu lwendawo. Okwangoku, isinyithi esityhidiweyo sinamandla obushushu aphantsi, kwaye ubushushu baso bunyuka ngokukhawuleza xa sifunxa ubushushu obufanayo. Ngokwahlukileyo koko, i-coefficient yokwandiswa kobushushu be-granite yi-(4-8) × 10⁻⁶/℃ kuphela. Ulwakhiwo lwayo lwekristale luxinene kwaye lufana, lusebenza kakuhle kwaye lusasazwa ngokulinganayo. Idibene nobuchule bayo obuphezulu bokuthwala ubushushu, isenokugcina uzinzo olulinganayo kwiindawo ezinobushushu obuphezulu.
Ukukhanya kwesicelo: Ukukhetha kumisela ukuchaneka, uzinzo ludala ixabiso
Kwizixhobo ezifana nezixhobo zoomatshini abachanekileyo kunye noomatshini bokulinganisa abathathu, ukuguquguquka kobushushu beziseko zesinyithi esityhidiweyo kunokukhokelela kwiimpazamo zokucubungula okanye zokuhlola, okuchaphazela isivuno seemveliso ezifanelekileyo. Isiseko segranite, esinozinzo olubalaseleyo lobushushu, sinokuqinisekisa ukuba izixhobo zigcina ukuchaneka okuphezulu ngexesha lokusebenza ixesha elide. Emva kokuba ishishini elithile lokuvelisa izixhobo zeemoto litshintshe iqonga lesinyithi esityhidiweyo ngeqonga legranite, izinga leempazamo zobukhulu beendawo ezichanekileyo lehle ukusuka kwi-3.2% ukuya kwi-0.8%, kwaye ukusebenza kakuhle kwemveliso kwanda nge-15%.
Ngokusebenzisa indlela ecacileyo yokubonisa kunye nokulinganisa ngokuchanekileyo umfanekiso we-thermal, umahluko kwi-thermal deformation phakathi kwe-granite kunye ne-cast iron ubonakala ngoko nangoko. Kwishishini lanamhlanje elilandela ukuchaneka okuphezulu, ukukhetha izixhobo ze-granite ezinozinzo oluqinileyo lobushushu ngokuqinisekileyo linyathelo lobulumko lokuphucula ukusebenza kwezixhobo kunye nokuqinisekisa umgangatho wemveliso.
Ixesha leposi: Meyi-24-2025