Working fluid, working process using the working fluid, and method of production of the working fluid

Abstract

A working fluid according to the invention is supplied to a working point where a working of a workpiece is performed with the working fluid. The working fluid contains a solvent and microcapsules filled with liquid-state substances, the microcapsules being dispersed in the solvent. A working process according to the invention performs a working of a workpiece with the working fluid, the working fluid containing the solvent and the microcapsules filled with the liquid-state substances, the microcapsules being dispersed in the solvent. In the working process according to the invention, the working fluid is supplied to a working point of the workpiece. The working of the workpiece is performed at the working point with the working fluid supplied to the working point. Further, in a method of production according to the invention, microcapsules that are filled with liquid-state substances are produced by performing a selected process, and the microcapsules and a solvent are mixed so that the microcapsules are dispersed in the solvent to form the working fluid.

What is claimed is:  
     
         1 . A working fluid which is supplied to a working point where a working of a workpiece is performed with the working fluid, comprising: 
 a solvent; and    microcapsules filled with liquid-state substances, said microcapsules being dispersed in the solvent.    
     
     
         2 . The working fluid of    claim 1   , wherein said microcapsules have an average particle size ranging from 0.1 μm to 1000 μm.  
     
     
         3 . A working process which performs a working of a workpiece with a working fluid, the working fluid containing a solvent and microcapsules filled with liquid-state substances, the microcapsules being dispersed in the solvent, comprising the steps of: 
 supplying the working fluid to a working point of the workpiece; and    performing a cutting process of the workpiece at the working point while supplying the working fluid to the working point.    
     
     
         4 . A working process which performs a working of a workpiece with a working fluid, the working fluid containing a solvent and microcapsules filled with liquid-state substances, the microcapsules being dispersed in the solvent, comprising the steps of: 
 supplying the working fluid to a working point of the workpiece; and    performing a grinding process of the workpiece at the working point while supplying the working fluid to the working point.    
     
     
         5 . A working process which performs a working of a workpiece with a working fluid, the working fluid containing a solvent and microcapsules filled with liquid-state substances, the microcapsules being dispersed in the solvent, comprising the steps of: 
 forming a mixture of the working fluid and abrasive particles;    supplying the mixture of the working fluid and the abrasive particles to a working point of the workpiece; and    performing a polishing process of the workpiece at the working point while supplying the mixture to the working point.    
     
     
         6 . A working process which performs a working of a workpiece with a working fluid, the working fluid containing a solvent and microcapsules filled with liquid-state substances, the microcapsules being dispersed in the solvent, comprising the steps of: 
 supplying the working fluid to a working point of the workpiece; and    performing a plastic deformation process of the workpiece at the working point while supplying the working fluid to the working point.    
     
     
         7 . A method of production of a working fluid which is supplied to a working point where a working of a workpiece is performed with the working fluid, comprising the steps of: 
 producing microcapsules that are filled with liquid-state substances; and    mixing the microcapsules and a solvent so that the microcapsules are dispersed in the solvent to form the working fluid,    wherein, in said producing step, a process, which is selected from the group including at least a surface polymerization process, an “in situ” polymerization process, a coacervation process, an immersion hardening/coating process and an immersion drying process, is performed to produce the microcapsules filled with the liquid-state substances.