CAJ | 학술논문

为实现高温合金用水蒸气作冷却润滑荆的绿色切削,研制了600～800 W的小型过热水蒸气发生器,并用YG6硬质合金刀具对镍基高温合金GH4169进行了单因素切削试验,效果明显:用水蒸气时,与干切、乳化液相比,主切削力分别减小了15%～20%和10%～15%,切削温度分别降低了20%～30%和10%～20%,并建立了切削力和切削温度的经验公式;变形系数也有减小;切屑多为螺卷屑.由于水蒸气分子直径远小于乳化液中水包油粒径,气态水分子容易进入刀一屑间的毛细管,故具有良好的冷却润滑性能.水蒸气可替代乳化液作冷却润滑剂,且来源广泛,又无污染,从而可实现高温合金的绿色切削.
위실현고온합금용수증기작냉각윤활형적록색절삭,연제료600～800 W적소형과열수증기발생기,병용YG6경질합금도구대얼기고온합금GH4169진행료단인소절삭시험,효과명현:용수증기시,여간절、유화액상비,주절삭력분별감소료15%～20%화10%～15%,절삭온도분별강저료20%～30%화10%～20%,병건립료절삭력화절삭온도적경험공식;변형계수야유감소;절설다위라권설.유우수증기분자직경원소우유화액중수포유립경,기태수분자용역진입도일설간적모세관,고구유량호적냉각윤활성능.수증기가체대유화액작냉각윤활제,차래원엄범,우무오염,종이가실현고온합금적록색절삭.
To achieve green cutting of superalloys with superheated water vapor cooling and lubricating,a 600--800 W min itype generator is developed.The single {actor experiments arc completed with YG6 tools cutting GH4169.Results show that using superheated water vapor,compared with dry and wet cutting,the main cutting force decreases about 15%-20% and 10%-15%,respectively ; the cutting temperature reduces about 20%-30% and 10%-20%; the de{ormation coefficient also decreases; the chips are mostly helical.The empirical equations of cutting forces and the temperature are obtained.The diameter of the water molecule is much less than that of O/W in the cutting fluids.The water molecule can easily penetrate the capillary in the tool-chip interface.Results indicate that the application of the water vapor can realize the green cutting of superalloys.