金刚石刀片主要用于激光切割硬脆大理石。是生产天然石材的关键专用工具之一。金刚石刀片是通过将金刚石刀片电焊在圆形基板上制成的。

 

金刚石刀片应经过所有正常的激光切割。基体必须具有一定的抗压强度。此外,它不宜过软,并具有一定的抗弯刚度。综合反映是要有足够的实力。基体的另一个关键特性是在应用中会受到明显的震动,因为刀片比基体厚,并且在操作过程中基体与激光切割大理石之间存在一定的间隙,以更好地防止基体被由于振动被迫引起抗压强度或疲劳断裂,基体必须具有一定的塑性延展性、较高的疲劳强度和延展极限,以减轻冲击和消化吸收振动。

 

It can be seen from the standard specifications of diamond blade matrix that in order to achieve the ductility limit and strength index value of the matrix, the heat treatment process of diamond blade with 65Mn as the matrix raw material should be medium temperature quenching. However, the matrix quenching of diamond blade has a very prominent characteristic, that is, the quenching deformation and cracking selectivity are large.

 


The causes of deformation are

 

1. Heating, whether gas or salt bath, the thermal convection of heat will more or less impact the sheet base and lead to heating deformation.

 

2. In addition, during quenching, the low-temperature martensite of steel changes to austenite, which leads to the change and deformation of mechanical in-situ stress with the transformation of specific volume.

 

造成裂纹的因素很多,如钢材的成分、原材料的缺点、初始组别、加热因素、制冷因素以及叶片独特的结构特点等,导致各种原位应力积累叶片上的孔洞,尤其是附近拉应力的大幅度增加,都是造成裂纹的潜在因素。

 

金刚石刀片基体的物理性能对其质量和性能指标的危害很大,而基体的热处理方法是危害其物理性能的关键因素。