A matsayin ainihin ɓangaren na'urar fashewar fashewar fashewar, na'urar fashewa ta harbi kai tsaye yana ƙayyade tasirin tsaftacewa na na'ura mai fashewa.Harbin karfen ne ya shiga bututun shigar da na’urar harbin a cikin motar harbin, sannan sai motar ta raba harbin karfen ga kowace na’urar ta harbin, sai kuma injin din ya kora daga injin din ya jefa. da karfe harbi a high gudun Tasiri da surface na workpiece cimma sakamako na tsaftacewa surface na workpiece.