Patent ID: 9597819
Date: 2017-03-21
CPC Classifications: B23D,B28D

Claim:
1. A method of cutting a high-hardness material with a multi-wire saw including a cutting web which is formed by winding a saw wire over at least two rollers a number of times and which includes a plurality of cutting parts that are strung parallel to each other at regular intervals between the at least two rollers, the method comprising the steps of: (A) providing at least one ingot which includes a body portion with two ends and a low-quality crystal portion that is located at only one of the two ends of the body portion; (B) fixing the at least one ingot onto a fixing base; and (C) slicing the at least one ingot having the low-quality crystal portion by arranging the at least one ingot with respect to the saw wire so that the cutting web does not contact with the low-quality crystal portion of the at least one ingot but does contact with the body portion of the at least one ingot, wherein each of the at least two rollers has a plurality of grooves to receive the saw wire in the cutting web, and the method further includes the step of measuring respective variations d