| 摘要 |
PURPOSE:To provide a seed rod cutting method accurately detecting the crystal azimuth of a single crystal ingot being a material in order to obtain a seed crystal of good quality and capable of accurately controlling the cutting direction of the material on the basis of the detected crystal azimuth. CONSTITUTION:The outer periphery of a material is bonded to two surfaces of a jig 1 and the jig l is placed on the jig 2 placed and fixed on a jig 3 so that one side surface thereof is turned downwardly and the end surface of the material 4 is irradiated with K-rays at a Bragg angle by an X-ray diffraction device. At this time, four adjusting bolts 2e of the jig 2 are operated so that the intensity of a diffraction wave due to the detector 6 of the X-ray attraction device becomes max. to control the direction of the jig 1 and, thereafter, the jig 2 is fixed to the reference surface of a cutter to perform first cutting. Next, the jig 1 is placed on the jig 2 so that the other side surface thereof is turned downwardly and the end surface of the material is again irradiated with X-rays and the control bolts 2e are operated in the same way so that the intensity of the diffraction wave due to the detector 6 becomes max. to control the direction of the jig 1 and the jig 2 is fixed to the reference surface of the cutter to perform second cutting. |
