CN1199148A

CN1199148A - Composite material for sliding bearing and its composition technology

Info

Publication number: CN1199148A
Application number: CN 97103594
Authority: CN
Inventors: 刘忠良; 刘芳; 刘星
Original assignee: 刘忠良
Priority date: 1997-05-09
Filing date: 1997-05-09
Publication date: 1998-11-18

Abstract

A composite material for sliding bearing features that a layer of Zn-Al alloy is joined to surface of steel substrate through mechanical treating the surface of steel substrate, removing oil dirt and rust, coating with solution to remove oxidized film, and centrifugal or static casting to join the molten Zn-Al alloy to the surface of steel substrate. Its advantages are not damaging axle easily, and low cost.

Description

A kind of composite material of sliding bearing and combination technological method thereof

The present invention relates to the sliding contact bearing material, be specially a kind of composite material and combination technological method thereof of sliding bearing.

Sliding bearing sleeve in the present sliding bearing that uses and slide block etc., major part is to adopt Cuprum alloy to make copper-alloy casting or steel composite members, and make the allumen foundry goods with allumen, sliding bearings such as sliding bearing sleeve made from copper-alloy casting or steel carbon/carbon-copper composite material and slide block, it is less to consume a large amount of china natural resources, expensive copper, make it cost of raw material height, and the sliding bearing made from the foundry goods of allumen, because the specific elongation of allumen is low, poor toughness, intensity is lower, in use bearing member is fragile to make it sliding bearing, therefore the bearing housing of making by above-mentioned material, sliding bearings such as slide block, reason such as undesirable or cost of raw material height can not be widely used so far owing to using effect.

The composite material and the combination process thereof that the purpose of this invention is to provide a kind of sliding bearing, utilize composite sliding bearings such as bearing housing that this composite material and combination process thereof make, slide block, not fragile, using effect is good, the cost of raw material is low, and is easy to utilize.

To achieve these goals, the present invention is on steel base part surface, the compound allumen friction layer of going up, combination process is with after the processing of steel base part through machining, the rust cleaning that degreases, brushing solution oxide film dissolving, adopts cast casting or quiet casting casting technique that the allumen of fusion is compounded on the base member surface of steel.

By composite material provided by the invention and the prepared sliding bearing of combination technological method thereof, has specific elongation and toughness preferably, has intensity preferably simultaneously, not fragile during use, increased its using effect, reduced cost, can be used widely, except the material of the sliding bearing that can be used for making sliding bearing sleeve, slide block, slide plate etc., can also be as other mechanical high-abrasive materials.

Below just the present invention do to be described in detail:

The present invention is on the surface as sliding bearing steel base part, is compounded with the allumen friction layer.

The composition of allumen is zinc 70.997%, aluminium 27%, copper 2%, magnesium 0.03%.

Its combination technological method process is with after the processing of steel base part through machining, the rust cleaning that degreases, brushing solution oxide film dissolving, the allumen of fusion cast with centrifugal pressure casting or quiet casting heat is compounded on the surface of steel base part, water on the surface of warm water with allumen crystallization and freezing base member, its process step is as follows:

1), the steel base part is carried out machining, be the rusty stain of removing on the steel base part, the steel base part after alkali liquid washing is degreased is immersed in thermal technology's industry hydrochloric acid solution of 30% and carries out 2-5 minute immersion; Brushing one deck zinc chloride and ammonium chloride mixing saturated solution after the steel base part is heated to 300-400 ℃ are to eliminate the patina on the steel base part;

2), with zinc, aluminium, copper, manganese Metal Melting, carry out refining slagging-off again, obtain the allumen of fusion;

3), the steel base part behind the brushing solution hangs the end, is loaded on the steel base part on the pouring machine again or places on the quiet casting worktable, is compounded on the surface of steel base part with casting or the quiet casting method allumen with fusion, waters warm water with the alloy junction crystal solidification.

Fig. 1: the structural representation of using the sliding bearing sleeve of the present invention's making

Fig. 2: the structural representation of using the slide block of the present invention's making

It is the structural representation of the sliding bearing sleeve made by composite material provided by the invention that Fig. 1 gives what show, wherein steel base part 1 is a round body, allumen is compounded on the surface of base member 1 by aforesaid combination process step, just constituted allumen friction layer 2, and then carry out machining, form and have oil hole 3 on it, the oil groove 4 that is connected with oil hole 3, on the allumen friction layer 2, be inlaid with seal ring 5 in the radial ringed groove that is equipped with, be inlaid with the selflubricating band 6 that the oil-free lubrication material constitutes in the axial notch that is equipped with, make a kind of composite sliding bearing cover.

It is the structural representation of the slide block made by composite material provided by the invention that Fig. 2 gives what show, wherein, 1 ' for upper surface be the steel base part of rectangle for the arc shaped surface bottom, 2 ' for be compounded in the allumen friction layer on base member 1 ' outer surface by combination process provided by the invention, 3 ' be oilhole, 4 ' be before compound at the shoe cream room of base member 1 ' middle processing, it is a kind of composite slider bearing.

Claims

1, a kind of composite material of sliding bearing is characterized in that being compounded with the allumen friction layer on the surface as the steel base part of sliding bearing.

2, the composite material of a kind of sliding bearing according to claim 1, the composition that it is characterized in that compound allumen are zinc 70.997%, aluminium 27%, copper 2%, magnesium 0.03%.

3, the combination technological method of the described composite material of a kind of claim 1 is characterized in that being undertaken by following process step:

2), zinc, aluminium, copper, magnesium metal are carried out melting, carry out the allumen that the refining slagging-off obtains fusion again;

3), the steel base part behind the brushing solution hangs the end, the steel base part is loaded on uses the centrifugal pressure casting casting method on the casting machine again, and the molten allumen heat of touching is compounded on the surface of steel base part, waters warm water with the alloy junction crystal solidification.

4, combination technological method according to claim 3, the steel base part extension that it is characterized in that brushing solution is at the end, be placed on the quiet casting worktable, be compounded on the surface of steel base part, water warm water the alloy junction crystal solidification with the allumen heat of quiet casting method with fusion.