CAJ | 학술논문

针对难加工镍基高温合金材料G H4169切削过程中的加工效率低下、刀具耐用度差等问题，新型PVD-TiAlN涂层硬质合金刀具进行了高温合金GH4169高速铣削正交试验，研究了TiAlN涂层刀具高速铣削GH4169过程中的刀具耐用度。另外，应用退火罚函数遗传算法建立了以最大切除率为目标函数，以给定刀具寿命为约束条件的切削参数优化数学模型，得到了刀具寿命 T≥30 min条件下，切除率最大的最优参数组合，并进行了试验验证。研究结果表明：高温合金G H4169高速铣削过程中，切削速度对刀具寿命的影响非常明显，进给量及切削深度的影响较小；应用退火罚函数遗传算法建立的切削参数优化模型能在给定约束条件下明显提高加工效率，为现实加工过程中的参数优化提供了一种新方法。
침대난가공얼기고온합금재료G H4169절삭과정중적가공효솔저하、도구내용도차등문제，신형PVD-TiAlN도층경질합금도구진행료고온합금GH4169고속선삭정교시험，연구료TiAlN도층도구고속선삭GH4169과정중적도구내용도。령외，응용퇴화벌함수유전산법건립료이최대절제솔위목표함수，이급정도구수명위약속조건적절삭삼수우화수학모형，득도료도구수명 T≥30 min조건하，절제솔최대적최우삼수조합，병진행료시험험증。연구결과표명：고온합금G H4169고속선삭과정중，절삭속도대도구수명적영향비상명현，진급량급절삭심도적영향교소；응용퇴화벌함수유전산법건립적절삭삼수우화모형능재급정약속조건하명현제고가공효솔，위현실가공과정중적삼수우화제공료일충신방법。
For the problems of the poor tool life and the low removal rate to machine nickel based superalloys GH4169, the orthogonal experiment was processed to obtain the tool life data of a new developed PVD-TiAlN coated carbide tool to cut superalloy GH4169. In addition, by annealing penalty function genetic algorithm ,an optimization model of cutting parameters, which lead to maximum material removal rate, is built according to the specified tool life values .The optimal parameter combination is gotten when the tool life T≥30min as constraint conditions ,and the experimental validation is done .The results indicate that cutting speed has highly obvious influence on tool life. The optimization model, which is established based on annealing penalty function genetic algorithm, can improve materials processing efficiency and quality of the GH4169 effectively .