MANUFACTURING METHOD OF ELECTRODEPOSITION GRINDSTONE

PROBLEM TO BE SOLVED: To provide a manufacturing method of an electrodeposition grindstone capable of generating a proper autogenous generation blade even when processing a hardly cutting material such as a sapphire substrate.SOLUTION: A manufacturing method of an electrodeposition grindstone (1) comprises a grindstone part (16) for fixing an abrasive grain by a plating layer of including nickel, and includes a plating bathtub preparation process of preparing a plating bathtub (2) of containing a nickel plating liquid (A) mixed with the abrasive grain, a soaking process of soaking a base (4) and a nickel electrode (6) for forming the grindstone part in the nickel plating liquid in the plating bathtub, a grindstone part forming process of forming the grindstone part by depositing the abrasive grain and the plating layer on a surface of the base by making a direct current flow with the base as a negative electrode and the nickel electrode as a positive electrode, and a base removal process of exposing the whole or a part of an area covered with the base of the grindstone part by removing the whole or a part of the base. An additive (B) with the plating layer as a porous structure is added to the nickel plating liquid.SELECTED DRAWING: Figure 1 【課題】サファイア基板のような難切削材を加工する場合にも適切な自生発刃を生じ得る電着砥石の製造方法を提供する。【解決手段】ニッケルを含むめっき層で砥粒を固定した砥石部（１６）を備える電着砥石（１）の製造方法であって、砥粒を混入したニッケルめっき液（Ａ）が入っためっき浴槽（２）を準備するめっき浴槽準備工程と、砥石部を形成するための基台（４）とニッケル電極（６）とをめっき浴槽内のニッケルめっき液に浸漬する浸漬工程と、基台を陰極とし、ニッケル電極を陽極として直流電流を流すことで、基台の表面に砥粒及びめっき層を堆積させて砥石部を形成する砥石部形成工程と、基台の全部又は一部を除去して砥石部の基台で覆われていた領域の全部又は一部を露出させる基台除去工程と、を含み、ニッケルめっき液には、めっき層を多孔性構造とする添加剤（Ｂ）を添加した。【選択図】図１