CAJ | 학술논문

为了提高刀具使用寿命、工件的表面质量和尺寸精度，金属切削过程中使用切削液是一种常用的有效的方法。但切削液会对人身健康和环境造成一系列的负面影响。为了合理地确定切削液的流量，利用普朗特对流换热边界层理论分析液态强迫对流条件下少量润滑的冷却机制，推导出液态强迫对流条件下充分冷却所需最少切削液流量公式，并对普朗特对流换热边界层理论在铝合金7050-T7451铣削过程中的适应性进行实验验证。实验结果表明，利用普朗特对流换热边界层理论可以对少量润滑冷却机制做出较为合理的解析。
위료제고도구사용수명、공건적표면질량화척촌정도，금속절삭과정중사용절삭액시일충상용적유효적방법。단절삭액회대인신건강화배경조성일계렬적부면영향。위료합리지학정절삭액적류량，이용보랑특대류환열변계층이론분석액태강박대류조건하소량윤활적냉각궤제，추도출액태강박대류조건하충분냉각소수최소절삭액류량공식，병대보랑특대류환열변계층이론재려합금7050-T7451선삭과정중적괄응성진행실험험증。실험결과표명，이용보랑특대류환열변계층이론가이대소량윤활냉각궤제주출교위합리적해석。
In metal cutting processes,the use of cutting fluid is the most common strategy to improve the tool life,the product surface finish and the size accuracy.But cutting fluid may result in a series of negative effects on human health and environment.In order to apply cutting fluid reasonably,little quantity lubricant cooling mechanisms under condition of liquid forced convection were researched based on Prandtl convective heat transfer boundary layer theory,the formula of minimum cutting fluid flow rate desired by sufficient cooling under condition of liquid forced convection was derived,and the validity of Prandtl convective heat transfer boundary layer theory on aluminum alloy 7050-T745 1 milling process was verified through experiments.Experimental result shows that little quantity lubricant cooling mechanism may be analyzed reasonably by Prandtl convective heat transfer boundary layer theory.