论文部分内容阅读
超高强度钢D6AC由于强度高,8_b=1.9～2.1GPa,韧性大,在调质状态下硬度为HRC47～52,故属于难加工材料。D6AC超高强度钢在调质状态下(HRC47～52)进行钻孔,采用一般的标准是无法加工的,应采用超硬高速钢Co5Si或501作钻头;在钻头几何角度及结构上应使其具有强度高、刚性好的特性;在切削用量方面,应采用低速小进给。并且在硬度为HRC50的D6AC超高强度钢上钻孔试验,达到了较好的切削效果。
Ultra-high strength steel D6AC due to high strength, 8_b = 1.9 ~ 2.1GPa, toughness, quenched and tempered in the state of HRC47 ~ 52, it is difficult to process the material. D6AC ultra-high-strength steel in the state of quenched and tempered (HRC47 ~ 52) for drilling, the general standard is not machinable, super hard hard steel should be used for Co5Si or 501 bit; drill bit geometry and structure should make it With high strength, good rigidity characteristics; in terms of cutting, low-speed small feed should be used. And in the hardness of HRC50 D6AC ultra-high strength steel drilling test to achieve a better cutting results.