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:
May. 21, 1985
Filed:
May. 17, 1984
Tetsuya Suganuma, Nagoya, JP;
Koji Kazuoka, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A method for manufacturing a slide member by molding an alloy powder composed of, by weight, from 2.5 to 7.5% of Cr, from 0.1 to 3.0% of Mn, from 0.2 to 0.8% of P, from 1.0 to 5.0% of Cu, from 0.5 to 2.0% of Si, from 0 to 3% of Mo, from 1.5 to 3.5% of C, and the balance being Fe with less than 2.0% of impurities into a compressed powder mass under a molding product pressure of 5 to 7 ton/cm.sup.2 ; sintering the compressed powder mass at a temperature of 1020.degree. to 1180.degree. C. to produce a sintered alloy mass; treating the sintered alloy mass for 0.5 to 3 hours by soaking the sintered alloy mass at a temperature from 450.degree. to 550.degree. C. under a reduced pressure of 0.1 to 0.8 atm. while exposing the sintered alloy mass to a gas, the gas having a main component selected from the group consisting of a non-oxidizing type gas and an endothermic type gas, and containing 20 to 40 vol. % of heated steam; and forming a film of tri-iron tetroxide on a surface of the sintered mass and on wall portions of a plurality of pores formed within the sintered mass.