Method for manufacturing porous metal bonded grindstone, and method for manufacturing porous metal bonded wheel

Patent metadata

Field	Value
Publication number	US-2023405764-A1
Application number	US-202118251644-A
Country	US
Kind code	A1
Filing date	Oct 14, 2021
Priority date	Nov 10, 2020
Publication date	Dec 21, 2023
Grant date	—

Abstract

A method for manufacturing a porous metal bonded grindstone with which it is possible to arbitrarily adjust a porosity from a low porosity to a high porosity is provided. This method is intended for manufacturing the porous metal bonded grindstone and comprises: a molding step (P1) for obtaining an unfired molded body including abrasive grains, metal powder, and a pore forming material; a solute removing step (P2) for bringing vapor of a solvent having solubility with respect to the pore forming material into contact with the unfired molded body to remove the pore forming material and to obtain an unfired molded body having pores; and a firing step (P3) for firing the unfired molded body having pores.

First claim

1 . A method for manufacturing a porous metal bonded grindstone, comprising:
a molding step for obtaining an unfired molded body including abrasive grains, metal powder and a pore forming material; a solute removing step for bringing vapor of a solvent having solubility with respect to the pore forming material into contact with the unfired molded body to remove the pore forming material and to obtain an unfired molded body having pores; and a firing step for firing the unfired molded body having pores.

2 . The method for manufacturing a porous metal bonded grindstone according to claim 1 , wherein a volume ratio of the pore forming material to the unfired molded body is from to 90 vol %.

3 . The method for manufacturing a porous metal bonded grindstone according to claim 1 , wherein an average particle size of the pore forming material is from 5 to 250 μm.

4 . The method for manufacturing a porous metal bonded grindstone according to claim 1 , wherein the solvent contains at least one selected from the group consisting of water, alcohol, and acetone.

5 . The method for manufacturing a porous metal bonded grindstone according to claim 1 , wherein
the solvent contains water and the pore forming material is a water-soluble compound.

6 . The method for manufacturing a porous metal bonded grindstone according to claim 5 , wherein the pore forming material is a water-soluble inorganic salt.

7 . A method for manufacturing a porous metal bonded wheel, comprising the steps of:
bonding, to a base metal, a porous metal bonded grindstone manufactured in accordance with the method for manufacturing the porous metal bonded grindstone according to claim 1 ; and finishing the porous metal bonded grindstone bonded to the base metal by using a dresser.

Assignees

• Noritake Co Ltd

Inventors

• Yamaguchi Masaru
• Furuno Daiki

Classifications

• B24D3/10 Primary

  for porous or cellular structure, e.g. for use with diamonds as abrasives · CPC title

• B24D3/00

  Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents · CPC title

• B24D3/02

  the constituent being used as bonding agent · CPC title

• B24D3/06

  metallic {or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements} · CPC title

• B24D18/0009

  using moulds or presses · CPC title