Izinto ezichaphazela ixesha lokubamba le-workpiece kwi iziko lombane lokulinga

1. Ubushushu bokufudumala

Phantsi kweemeko eziqhelekileyo, idatha yobungqina ihlala isetyenziselwa ukubala kwiziko lombane lokulinga. Ngokomzekelo, i-carbon steel idla ngokubalwa kwi-1min / 1mm, ngelixa i-alloy steel i-1.3 ukuya kwi-1.8 amaxesha e-carbon steel. Isizathu kukuba insimbi ye-alloy inomxholo ophezulu wezinto ezixutywayo. Kodwa kwiqondo lokushisa eliphezulu (1000 ℃), ukuba ubukhulu obusebenzayo bukhulu, umda ophantsi wale coefficient uyasetyenziswa, kwaye umda ophezulu wobunzima obusebenzayo buncinci.

2. Ukwahluka kumabakala ensimbi

I-carbon steel kunye nentsimbi ephantsi ye-alloy, ixesha elifunekayo lokuchithwa kwe-carbides kunye ne-homogenization ye-austenite lifutshane kakhulu, ngoko ngokwemeko, “zero” ukucima ukugcinwa kobushushu kungasetyenziswa, okunokunciphisa umjikelo wenkqubo kunye nokunciphisa Ukucima iintanda. Kwinsimbi ephezulu ye-alloy, ukufudumeza ukucima kunye nexesha lokubamba kufuneka kwandiswe ngokufanelekileyo ukuze kuqinisekiswe ukuchithwa kunye ne-austenitization ye-carbides. Inokuqikelelwa kwi-0.5 ukuya kwi-0.8min nge-millimeter ngexesha lokubamba. Xa umda ophezulu wokucima ubushushu ngu-0.5min, ubushushu bokucima buxhomekeke kwiThatha i-0.8min kumda ophantsi.