CAJ | 학술논문

通过测试胎体硬度、抗弯强度以及测定切割花岗岩的切割速度，分析了铁基超细预合金粉对改善胎体性能的作用，并研究了铁基超细预合金粉对干切圆锯片锋利度的影响。研究发现铁、铜、镍、锡构成的胎体中，超细预合金粉提高胎体的硬度和抗弯强度，使胎体对金刚石的包镶能力更强，从而提高胎体对金刚石的把持力，提高锯片的锋利度，并且某些情况下超细预合金粉可以完全替代钴粉而不降低锯片的锋利度。使用超细预合金粉时，含钴的和不含钴的锯片搭配较粗粒度40/45金刚石能提高切割效率；对于不使用超细预合金粉的、由铁、铜、镍和锡粉混合组成的不含钴的胎体，选择较细粒度50/60金刚石可提高锯片的切割效率。并且通过在其中添加钴粉发现，钴提高锯片的切割效率，防止锯片在切割过程中产生“烧刀”现象，并且添加钴的胎体选择较粗粒度40/45金刚石能提高切割效率。
통과측시태체경도、항만강도이급측정절할화강암적절할속도，분석료철기초세예합금분대개선태체성능적작용，병연구료철기초세예합금분대간절원거편봉리도적영향。연구발현철、동、얼、석구성적태체중，초세예합금분제고태체적경도화항만강도，사태체대금강석적포양능력경강，종이제고태체대금강석적파지력，제고거편적봉리도，병차모사정황하초세예합금분가이완전체대고분이불강저거편적봉리도。사용초세예합금분시，함고적화불함고적거편탑배교조립도40/45금강석능제고절할효솔；대우불사용초세예합금분적、유철、동、얼화석분혼합조성적불함고적태체，선택교세립도50/60금강석가제고거편적절할효솔。병차통과재기중첨가고분발현，고제고거편적절할효솔，방지거편재절할과정중산생“소도”현상，병차첨가고적태체선택교조립도40/45금강석능제고절할효솔。
The behavior of superfine iron-based prealloyed powder in the matrix of diamond disc and the effect of prealloyed powder on sharpness of diamond disc for cutting granite were investigated by testing the hardness and transverse rupture strength(TRS)and analyzing the cutting speed of granite.The results show that adding the superfine prealloyed powder in FeCuNiSn matrix can increase the hardness and TRS of the matrix and im-prove the holding force of the matrix to diamond particle.Thus the sharpness of diamond disc was increased. Furthermore,the superfine prealloyed powder can totally replace the cobalt powder while not decreasing the sharpness.With the application of the superfine prealloyed powder,using coarse particle size of diamond 40/45 can improve the cutting efficiency with or without adding cobalt in the matrix.Without the application of the su-perfine prealloyed powder,using fine particle size of diamond 50/60 can improve the cutting efficiency without adding cobalt in the matrix.By addition of an appropriate amount of cobalt in the matrix,it was revealed that cobalt increased the cutting efficiency and prevented “boiled segment”phenomenon when the diamond disc cut hard granite.Meanwhile,using coarse particle size of diamond 40/45 can improve the cutting efficiency can im-prove the cutting efficiency of the diamond disc with adding cobalt in the matrix.