Isakhiwo sensimbi yokusebenzela ekushiseni nasekupholiseni, ngenxa yokungaguquguquki izinga lokupholisa lesendlalelo esingaphezulu kanye nesigaba esiyinhloko kanye nesikhathi sakha umehluko wokushisa, kuzoholela ekwandiseni ivolumu nokufinyela kokucindezeleka okungalingani okucindezela ukushisa. Ekucindezelekeni okushisayo ngenxa yokushisa okungaphansi kwendawo kwaqala ingxenye ewumgogodla, ukufinyela kukhulu futhi kungaphezu kokushiya ingxenye ephakathi kwesigaba sokushuba, lapho ukuphela kokupholisa, njengoba ingxenye emaphakathi yokufinyezwa kwevolumu yokugcina yokupholisa ayikwazi. ishiya ngokukhululekile ingxenye emaphakathi yengcindezi yangaphezulu. Lokho kungaphansi kwethonya lokucindezeleka okushisayo ekugcineni ukucindezela kwendawo yokusebenza kanye nokucindezeleka kwenhliziyo Ministry. Lesi simo yi-velocity epholile, ukwakheka kwezinto ezibonakalayo kanye nokwelashwa kokushisa nezinye izici. Uma selehlile, ngokushesha, kuya phezulu okuqukethwe kwekhabhoni kanye nokwakheka kwe-alloy, inqubo yokupholisa engalingani ye-plastic deformation ngaphansi kwengcindezi yokushisa ekhiqizwa ukukhulu, uhlobo lokugcina lwengcindezi eyinsalela olutholayo.

Ngakolunye uhlangothi insimbi ngesikhathi sokwelashwa kokushisa ngenxa yokuguqulwa kwezicubu okungukuthi i-austenite ku-martensite, ehambisana nokwenyuka kwevolumu ethile yokwandiswa kwevolumu ye-workpiece, izingxenye ezihlukahlukene ze-workpiece zinenguquko yesigaba, okuholela ekungavumelani. yomthamo wokucindezeleka kwezicubu ezikhulile. Umphumela uba ukucindezelwa okuqinile kwezicubu ezingaphezulu, ingxenye yenhliziyo ecindezelayo, kanye nengcindezi yokushisa ngokuphambene. Ingcindezi kusayizi wocezu lokusebenza nezinga lokupholisa le-martensite transformation zone factor, umumo, ukwakheka kwamakhemikhali wento.