Development of high-speed cutting technology of brittle materials by laser

切割玻璃时需要进行划线加工，通常使用砂轮切割机。但是，近年来，利用激光照射产生的热应力来进行仅在表面引导裂纹的划线加工。与现有技术相比，在截面上没有微小的裂纹和平坦度，而且，由于不产生玻璃碎片，因此是制造效率高的方法。本文介绍了利用CO_2激光器新的加热点进行激光划片的方法，并在此方法下进行了激光划片工艺的实验，在此基础上探讨了新的激光划片工艺的可能性。

The scribing process is necessary for cutting glass, and a wheel cutter is used for it. Recently, however, the scribing process that guides a crack only on the surface is using the thermal stress generated by laser irradiation. Compared with the conventional method, there is no micro crack and flatness in a cross section.Furthermore, since the chips of glass are not generated, it is the method whose manufacturing efficiency is high. This research describes about the laser scribing method using the new heating point by CO_2 laser, experiments the laser scribing processing in this method, and examines the possibility of a new laser scribe process based on the result.