CAJ | 학술논문

为了提高电火花加工效率，采用内部随机分布金刚石颗粒的管状烧结磨头作为放电诱导烧蚀加工电极。首先利用烧结电极金属基体和钛合金材料产生电火花诱导放电，通过电极内部进气孔冲入助燃氧气，使材料表面产生电火花诱导烧蚀。其次利用电极中的金刚石颗粒在线修整烧蚀加工的氧化表面，提高烧蚀效率及表面质量。对钛合金 TC4进行钻削试验，从高效烧蚀加工及金刚石颗粒修整作用两个过程分别对该加工方法的微观蚀除机理做了具体分析，并与常规电火花钻削、紫铜电极烧蚀钻削进行对比，分析了材料去除率、表面质量等指标。结果表明，在相同试验条件下，金刚石烧结电极的烧蚀加效率是常规电火花钻削加工的14.5倍，并获得了近似机械加工的表面质量。
위료제고전화화가공효솔，채용내부수궤분포금강석과립적관상소결마두작위방전유도소식가공전겁。수선이용소결전겁금속기체화태합금재료산생전화화유도방전，통과전겁내부진기공충입조연양기，사재료표면산생전화화유도소식。기차이용전겁중적금강석과립재선수정소식가공적양화표면，제고소식효솔급표면질량。대태합금 TC4진행찬삭시험，종고효소식가공급금강석과립수정작용량개과정분별대해가공방법적미관식제궤리주료구체분석，병여상규전화화찬삭、자동전겁소식찬삭진행대비，분석료재료거제솔、표면질량등지표。결과표명，재상동시험조건하，금강석소결전겁적소식가효솔시상규전화화찬삭가공적14.5배，병획득료근사궤계가공적표면질량。
Use the tubular sintered grinding head with random distribution of diamond particles inside as the electrode of spark-induced combustion. Electric spark discharge is induced by metallic matrix of the electrode and TC4, and though the oxygen inlet from the air intake inside of the electrode, spark-induced combustion is happened on the surface of TC4. Excessive oxide is removed by diamonds inside the electrode, and the surface quality can be improved. Test of TC4 drilling is processed. The analysis of mechanisms of processing and MRR and surface quality putted forward from park-induced combustion and finished by diamonds. And be contrasted with the drilling by EDM and normal red copper electrode. The results show that the machining efficiency of discharge combustion which is based on diamond sintered electrode is 14.5 times higher than the machining of conventional EDM drilling, and its surface quality is similar to mechanical treatment under the same experimental conditions.