Aluminium profiles muaj siab plasticity thiab tsis tshua muaj kev tiv thaiv ntawm qhov kub thiab txias. Tsis tas li ntawd, cov txheej txheem atomic diffusion yog nruj, nrog rau kev ua tiav recrystallization, uas yog qhov tsim nyog rau kev txhim kho cov qauv. Thaum lub 3-axis compressive kev nyuaj siab lub xeev yog qhov tseem ceeb, thermal deformation tuaj yeem hloov pauv cov qauv zoo li-cam khwb cia ntawm aluminium profile. Muab qhov tsim nyog ntawm deformation, cov kev hloov pauv hauv qab no tuaj yeem tshwm sim hauv cov qauv tsim.
(1) Feem ntau, thermal deformation yog ua tiav los ntawm ntau qhov kev rov qab deformation. Txij li thaum cov txheej txheem hardening thiab softening tshwm sim ib txhij nyob rau hauv txhua kis. Lub deformation ntawm industrial aluminium profiles lov cov coarse columnar nplej. Nyob rau tib lub sijhawm, nws kuj tuaj yeem kho qee qhov tawg me me.
(2) Vim tias cov nyhuv ntawm hydrostatic siab nyob rau hauv lub xeev kev nyuaj siab, nws muaj peev xwm txhawb cov vuam ntawm npuas uas twb muaj lawm nyob rau hauv lub cam khwb cia qauv, compaction ntawm shrinkage kab noj hniav, loosening thiab compaction, thiab tig mus rau hauv ib tug denser qauv.
(3) Vim muaj kev txhim kho thermal zog muaj peev xwm ntawm high-temperature atoms, nyob rau hauv qhov kev txiav txim ntawm kev ntxhov siab, nrog kev pab los ntawm dawb diffusion thiab txawv diffusion ntawm atoms, lub inhomogeneity ntawm cov tshuaj muaj pes tsawg leeg ntawm lub ingot yog kuj txo.
Los ntawm thermal deformation, cov qauv ingot txhim kho cov qauv deformation, ua rau nws muaj qhov ntom ntom dua, zoo ib yam thiab zoo equiaxed nplej, thiab cov tshuaj muaj pes tsawg leeg. Yog li ntawd, lub plasticity thiab kuj qhia tau zoo heev.
