| 摘要 |
PURPOSE:To highly accurately and efficiently effect a cutting by a method wherein cutting is performed under the condition that the temperature of spray of working fluid, which is fed on wire train at the exit side of matter to be cut and generated through the rotation of a grooved roller, is controlled to be constant. CONSTITUTION:Firstly, the temperature of the abrasive liquid 72 supplied from a work exit side abrasive liquid slit nozzle 12-2 with an abrasive liquid temperature controlling device 22 at the building-up stage under the running state of wire before the start of cutting is set higher. Cutting is started under the condition that the temperature of the abrasive liquid 7-2 is lowered just before the starting of the cutting. Through heat is generated in wire train 5 due to the starting of the cutting, the heat generated by cutting is cancelled due to the lowering of the temperature of the abrasive liquid 7-2 before the cutting, resulting in allowing to suppress the change of the temperature of spray as small as possible. Thus, cutting is performed under the condition that the temperature of spray is held constant, resulting in keeping the heat generation in the wire train 5 constant and consequently preventing the thermal change of a grooved roller 2 from developing. |
