Floating seal

Patent metadata

Field	Value
Publication number	US-9200710-B2
Application number	US-201214355965-A
Country	US
Kind code	B2
Filing date	Sep 27, 2012
Priority date	Aug 13, 2012
Publication date	Dec 1, 2015
Grant date	Dec 1, 2015

Abstract

A floating seal comprises C, Si, Mn, Ni, Cr, Mo, V, and B with the remainder being made up of Fe and unavoidable impurities. The contents of the C, Si, Mn, Ni, Cr, Mo, V and B are C: 2.2 to 3.9 wt %, Si: 0.5 to 3.5 wt %, Mn: 0.1 to 2.0 wt %, Ni: 0.5 to 4.3 wt %, Cr: 7.5 to 25.0 wt %, Mo: 0 to 8.0 wt % (excluding 0 %), V: 0 to 6.0 wt % (excluding 0%), and B: 0.02 to 0.4 wt %. The content of Cr in the parent phase is 2.00 to 5.41 wt %. The content of graphite is 0.05 to 0.35% of the surface area. The content of carbon boride is 19 to 40% of the surface area.

First claim

What is claimed is:

1. A floating seal comprising C, Si, Mn, Ni, Cr, Mo, V, and B with a remainder being made up of Fe and unavoidable impurities, wherein the the floating seal contains C, Si, Mn, Ni, Cr, Mo, V, and B in amounts as follows:
C: 2.2 to 3.9 wt %
Si: 0.5 to 3.5 wt %
Mn: 0.1 to 2.0 wt %;
Ni: 0.5 to 4.3 wt %;
Cr: 7.5 to 25.0 wt %;
Mo: greater than 0 to 8.0 wt %;
V: greater than 0 to 6.0 wt %;
B: 0.02 to 0.4 wt %; and
a content of Cr in a parent phase is…

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Nishioka Masato

Classifications

• F16J15/3496 Primary

  Mechanical Engineering · mapped topic

• F16J15/344

  Mechanical Engineering · mapped topic