Firstly, the alloy head of the cut-off gear is innovatively designed to change the shape of the alloy head, which can effectively protect the part of the tooth body supporting the alloy from being worn, so that the alloy head will not be dislodged due to premature wear of the tooth body guard iron and effectively prolong the working time of the alloy head. Secondly, the alloy strip inlaid around the cut-off head effectively protects the tooth body from rapid wear and tear, and the cut-off tooth has a longer working life. Sandstone should improve the alloy wear resistance, effectively protect the tooth body from rapid wear, extend the service life of the cut-off teeth, to create a better use value. Specific technical requirements are

　　1、Appearance quality: the tooth body appearance surface is smooth and smooth, no cracks, folds, dents and other defects visible to the naked eye, the tooth body surface to take anti-rust measures.

　　2, surface hardness: tooth body after heat treatment, tooth body head surface hardness ≥ 40HRC, tooth body shank surface hardness 38-42HRC.

　　3, impact toughness: tooth body after heat treatment impact toughness ≥ 49J/cm².

　　4, brazing seam shear strength: tooth body and cemented carbide brazing seam shear strength ≥ 180MPa.

　　5、Welding seam fullness: welding seam fullness of solder is not less than 80%.

　　6、Cracking check: the weld area and the welding material and the base material bonding surface shall not have cracks, carbide head shall not have cracks.