The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 1988
Filed:
Jun. 15, 1987
Yasuji Chikaoka, Aichi, JP;
Kenichi Watanabe, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
A method of manufacturing a cast-iron bonded diamond wheel, by using a cast iron as a bond for holding diamond particles together. After a powder mixture consisting of the diamond particles and the cast iron is molded into a desired formed body, a core tube of a heating furnace is loaded with the formed body. The core tube is maintained in a fluid-tight condition, and a flow of pure H.sub.2 gas is introduced into the core tube, so as to maintain the atmosphere within the core tube such that a dew point of the atmosphere is -50.degree. C. or lower. In this condition, the core tube is heated from the outside, whereby the formed mass of diamond abrasive and cast iron bond is sintered into the diamond wheel.