Izinto ezintathu zokunyuka kobushushu obuphezulu be izinto eziphikisayo

Ekuvavanyeni izinto eziphikisayo, ukunyuka kweqondo lokushisa eliphezulu ngenye yezibonakaliso ezibalulekileyo zokuvavanya ukusebenza kunye nomgangatho wezinto eziphikisayo. Ubudlelwane phakathi kwe-deformation kunye nexesha lezinto eziphikisayo phantsi kobushushu obuphezulu kunye nomthwalo othile kukunyuka kweqondo lokushisa kwezinto. Xa into ixhomekeke kumthwalo othile ongaphantsi kwamandla ayo okugqibela kumaqondo okushisa aphezulu, ukuguqulwa kweplastiki kuya kwenzeka ngokuqinisekileyo, kwaye ukuguqulwa kwayo kuya kwanda ngokuthe ngcembe ngexesha, kwaye konakalise izinto. Olu hlobo lwe-creep phenomenon ngokungangabazeki lubaluleke ngakumbi ekusebenziseni izinto eziphikisayo, kuba izinto ezintathu ze-refractory zicatshangelwa ngexesha elifanayo kwizinto eziphikisayo kwiqondo lokushisa eliphezulu: amandla, ukushisa kunye nexesha.

Ngenxa yeendlela ezahlukeneyo zomthwalo osetyenziswayo kwimathiriyeli ephikisayo, inokohlulwa ibe yi-high-high-compression creep, i-high-temperature creep, i-high-temperature flexural creep kunye ne-high-temperature torsional creep. Phakathi kwazo, i-high-temperature compression creep (ebizwa ngokuba yi-compression creep) ihlala isetyenziswa. Guqula).

I-compressive creep yeemveliso eziphikisayo ichazwa njenge: i-isothermal deformation yeemveliso eziphantsi koxinzelelo loxinzelelo ekuhambeni kwexesha.

Ngokuqhelekileyo uxinzelelo luyi-0.2MPa, kwaye isampuli kufuneka ibe yi-cylinder kunye nomngxuma ophakathi, kunye nobubanzi obuyi-50mm ± 0.5mm, ukuphakama kwe-50mm ± 0.5mm, kunye nomngxuma ophakathi kunye nobubanzi be-12 ukuya kwi-13mm, i-coaxial kunye ne-cylinder.