关键词: 硅钢片, 圆盘剪分切, 硬质合金圆盘刀, 磨损, 刃口钝化

Abstract:

The force of disc cutter was analyzed in the disc slitting process, and the slitting experiments of silicon steel sheet using carbide alloy disc cutter were conducted to study the wear process of the disc cutter.The surface topography, microstructure and percentage variation of Co-content before and after  wear of the carbide alloy disc cutter were compared, and the wear mechanism of the disc cutter was investigated.Experimental results indicate that the wear of carbide alloy disc cutter mainly occurs on the side of the cutting edge. The fillet radius of the cutting edge becomes bigger and the cutting edge of the disc cutter becomes blunt with the wear of the disc cutting tool. The wear mechanism of the disc cutter is mainly the loss of bonded phase cobalt, fatigue wear causing the desquamation of WC grain and adhesive wear.

Key words: silicon steel sheet, disc slitting, carbide alloy disc cutter, wear, cutting edge passivation