US 10,500,638 B2 · Lubricant, mixed powder for powder metallurgy, and method for producing sintered body

Abstract

One aspect of the present invention is a lubricant to be incorporated into a powder metallurgical mixed powder containing an iron-based powder. The lubricant includes a flaky organic material having an average particle diameter of from 0.1 μm to less than 3 μm. Another aspect of the present invention is a powder metallurgical mixed powder which contains an iron-based powder and the lubricant. Yet another aspect of the present invention is a method for producing a sintered compact. The method includes the step of mixing materials to give a powder metallurgical mixed powder containing an iron-based powder and the lubricant. The powder metallurgical mixed powder is compacted using a die to give a powder compact. The powder compact is sintered to give a sintered compact.

Claims10

Dependent claims

A metallurgical mixed powder, comprising:

an iron-based powder;
a lubricant;
and
a binder,
wherein the lubricant comprises:
a flaky organic material having an average particle diameter of from 0.1 μm to less than 3 μm,
wherein the flaky organic material comprises melamine cyanurate, and
the binder comprises at least one component selected from the group consisting of:
a polyolefin having a melting point of 45° C. to 90° C. and a melt flow rate at 190° C. of 2.8 g/10 min. to 3.8 g/10 min.;
and
an acrylic resin having a weight-average molecular weight of 50×104 or less.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/520,463Filed 1 Dec 2015

Priority

JP 2014-26626626 Dec 2014

Published

US 2017/0304893 A126 Oct 2017

Granted

10 Dec 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification22 codes

C10M 171/06
Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which…
B22F 1/05
Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties: metallic powder characterised by the size or…
B22F 1/102
Metallic powder containing lubricating or binding agents; Metallic powder containing organic material: metallic powder coated with organic material
B22F 1/103
Metallic powder containing lubricating or binding agents; Metallic powder containing organic material: containing an organic binding agent…

Lubricant, mixed powder for powder metallurgy, and method for producing sintered body

Life of this patent

Lubricant, mixed powder for powder metallurgy, and method for producing sintered body

Life of this patent

Abstract

Claims10