Patent ID: 11878385
Assignee: SHIN-ETSU HANDOTAI CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 3:
4. The method for slicing an ingot according to claim 3, wherein the warp directions in the workpiece feeding direction of the plurality of wafers cut out from the ingot are made identical regardless of the positions in the ingot by controlling each controlled temperature including the temperature of the cooling water flowing inside the wire saw casing, the temperature of the cooling water flowing inside each of the plurality of wire guides, and the temperature of the slurry such that a temperature difference between (i) each controlled temperature when slicing the ingot is started or ended and (ii) each controlled temperature when a central portion of the ingot is sliced is larger than 4% of each controlled temperature when slicing the ingot is started or ended.