CN203488556U

CN203488556U - Silicon carbide shaft sleeve

Info

Publication number: CN203488556U
Application number: CN201320307896.9U
Authority: CN
Inventors: 徐辉
Original assignee: SHANGHAI GAOYUE CERAMICS Co Ltd
Current assignee: SHANGHAI GAOYUE CERAMICS Co Ltd
Priority date: 2013-05-30
Filing date: 2013-05-30
Publication date: 2014-03-19
Anticipated expiration: 2023-05-30

Abstract

The utility model discloses a silicon carbide shaft sleeve. The silicon carbide shaft sleeve is a hollow pipe, the inner surface and the upper surface of which are stepped cylindrical surfaces. The silicon carbide shaft sleeve is formed by using a hot isostatic pressure sintering technology for sintering silicon carbide powder; irregular tiny foaming holes are distributed in the silicon carbide shaft sleeve; and the inner surface and the upper surface of the silicon carbide shaft sleeve are provided with a layer of precise lapping surface. The weight of the silicon carbide shaft sleeve is further reduced, and the noise of the silicon carbide shaft sleeve is further lowered.

Description

A kind of silicon carbide axle sleeve

Technical field

The utility model relates to axle sleeve technical field, particularly a kind of silicon carbide axle sleeve that is applied to the high speed slewing gears such as radiation fan, disc accessing.

Background technique

The bearing that is widely used at present the high speed slewing gears such as radiation fan, disc accessing generally adopts oil-impregnated bearing and ball bearing, but because equipment requirement is more and more higher, also the precision of bearing, life-span, noise etc. is had higher requirement.Oil-impregnated bearing and ball bearing can not meet the demands in many occasions.The feature that people are high according to silicon nitride ceramics hardness, wear resistance good and machining accuracy is high, has invented and has adopted high-performance zirconia, aluminium oxide and silicon nitride ceramics as the ceramic bearing in axle sleeve and axle center, and increased substantially the working life of bearing.But the density of these zirconium oxides, aluminium oxide and silicon nitride ceramics is still aobvious higher.

Model utility content

Technical problem to be solved in the utility model is to provide a kind of silicon carbide axle sleeve for the existing deficiency of prior art, to reduce weight and to improve its working life.

Technical problem to be solved in the utility model can be achieved through the following technical solutions:

A silicon carbide axle sleeve, for inside and outside surface is the hollow tube of ladder cylndrical surface, it adopts silicon carbide powder to form through HIP sintering technique sintering, and inside is distributed with many irregular tiny foam holes, and inside and outside surface has one deck lappingout surface layer.

Owing to having adopted technological scheme as above, silicon carbide axle sleeve quality of the present utility model is further alleviated, and noise is further reduced.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model silicon carbide axle sleeve.

Embodiment

Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.

Referring to Fig. 1, a kind of silicon carbide axle sleeve 100 providing in figure, for inside and outside surface is the hollow tube of ladder cylndrical surface, it adopts silicon carbide powder to form through HIP sintering technique sintering, inside is distributed with many irregular tiny foam holes 110, and inside and outside surface has one deck lappingout surface layer 120,130.

Claims

1. a silicon carbide axle sleeve, for inside and outside surface is the hollow tube of ladder cylndrical surface, is characterized in that, the inside of described silicon carbide axle sleeve is distributed with many irregular tiny foam holes, and inside and outside surface has one deck lappingout surface layer.