CN1090299C

CN1090299C - Manufacture of self-lubricating solid bush

Info

Publication number: CN1090299C
Application number: CN00101218A
Authority: CN
Inventors: 段俊荣; 贾建森
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-01
Filing date: 2000-01-01
Publication date: 2002-09-04
Anticipated expiration: 2020-01-01
Also published as: CN1258820A

Abstract

The present invention relates to a manufacture method of a self-lubricating bearing lining, which belongs to the field of bearing manufacture. The present invention has the advantages of simple manufacture technique, less related equipment and frock and low product cost. Main technical features comprise: filling pulverous solid self-lubricant material in an annular slot formed by the combination of a tapered compacting tool set and a lining metal base; carrying out rough processing to the working reference plane of the lining base; firmly combining the lining base with the solid self-lubricant material through covering and embedding pressure by a pressing machine; a product is obtained through the agglomeration, plasticization and fine manufacture of machines.

Description

A kind of manufacture method of self-lubricating solid bush

The invention belongs to bearing and make field, specifically a kind of manufacture method of self-lubricating plain bearing lining.

Inlaid type self-lubricating solid bearing is applicable in the operating mode field that can not use lubricant oil or use lubricated oil pole inconvenience.Its manufacture method is to design, process the hole of certain area ratio on bearing working face in advance, embeds simple substance or compound good solid lubricant therein, and makes bearing, bearing shell or liner plate.

Also have a kind of selflubricating lining that---bronze---steel backing trilaminate material cow forms by plastics at present, use very extensive.Its manufacture method is the thick spherical bronze powder of sintering one deck 0.25-0.5mm on steel backing, evenly the distribution solid lubricant is teflon, molybdenum disulfide and plumbous mixture as surface friction layer, solid lubricant Main Ingredients and Appearance in bronze bisque, makes by roll to be full of solid lubricant in the copper powder hole and at surface formation self-lubricating antifriction layer.With this kind method must make earlier the strip material, then again by the required size blanking, after a series of manufacturing procedures such as stamping-out, press-bending, roll-forming, finishing, chamfering, make the selflubricating lining.

Above-mentioned two series products have good wear resistance, have realized the selflubricating of bearing, but the fault of its existence be the processing technology complexity, to take equipment many, supporting frock is many, stock utilization is low, production cost of products is higher.

The manufacture method that the purpose of this invention is to provide a kind of self-lubricating solid bush, processing technology and equipment are simple, low cost product.

The present invention is achieved in that in the annular slot that earlier solid self lubricant material is filled in taper pressing mould and lining matrix composition, working pressure machine pushing lining matrix makes selflubricating dusty material and lining matrix form strong bonded on the basic machine of work, plastify through sintering, last machine flinishing becomes goods, earlier through roughening treatment, the method for roughening treatment is to adopt sintered, spherical copper alloy powder or machining to the working reference plane of lining matrix before the working pressure machine.

The present invention has following beneficial effect:

1, compare with inlaid type self-lubricating solid bearing, background technique matrix adopting high strength copper alloy is made, the cost of production height; Adding needs to get out a large amount of holes man-hour on matrix, and machining amount is big; Also need self lubricating material is made Cylindrical object earlier, stick with glue agent again and insert in the hole, complex process, stock utilization is low.Making method of the present invention is simple, saves raw material, and only lubricant quantity just can reduce 90%, and is with low cost.

2, compare with three-layer composite board material machining bearing lining, use the inventive method, need not roll up cover again by first panel, save many operations, the equipment of taking has only 30% of former technology, so low production cost; The lining of Sheng Chaning rolls seam because of nothing simultaneously, and overall structure is good; Increase lining thickness and do not increase the production difficulty, super thick lining need not to add outer edge cover again.

3, the present invention's a set of equipment can be produced the selflubricating lining that working reference plane has the inlaid type self-lubricating solid and has two types of coating self-lubricating solids, manufacturing mechanism utilization ratio height, and product adaptation is strong.

Fig. 1 is embodiment 1,2 a processing method schematic representation;

Fig. 2 is embodiment's 3 about processing method schematic representation;

Fig. 3 is the structural representation that embodiment's 4 lining working reference planes 4 are netted prismatic;

Fig. 4 is the section portion enlarged view of Fig. 3 I.

Be described further below in conjunction with embodiment:

Embodiment 1: steel---bronze---three layers of composite bush of plastics, working reference plane is an internal layer.

1, lining matrix: at seamless steel pipe internal layer sintered, spherical copper alloy powder,

2, solid self lubricant material: teflon, lead, the molybdenum disulfide powder evenly mixes;

3, solid self lubricant material is contained in the slit of taper pressing mould 3 and lining matrix 1 composition, push lining matrix 1 downwards with press machine, form evenly continuous coating at the lining matrix surface of sintered, spherical copper alloy powder, and make in the copper powder hole and be full of self lubricating material;

4,360-380 ℃ of plasticizing in the low-temperature sintering stove;

5, machine flinishing.

Be suitable for example: passenger vehicle friction sleeve Φ 130 * Φ 116 * 80mm is used for the chassis supporting system.Formerly roll, inlay the steel bushing method outward and make with the thick three layers of compound strip of 1.5mm.The present invention adopts Φ 133 * 8mm, 20# seamless steel pipe, and internal layer sintering 1mm is thick-30-+40 order 8-3 ball copper powder, the thick method of lining self-lubricating layer 0.1mm is made, and does not have to roll seam, and no lining stitches.

Embodiment 2: steel-mould the selflubricating lining, working reference plane is an internal layer.

1, lining matrix: plain carbon steel (stainless steel, cast steel; Cuprum alloy, aluminum alloy) pipe;

2, roughening treatment: turning processing matrix endoporus forms opening and is 30 degree-60 degree, apart from the thread-shaped rough surface of 1mm * dark 0.6mm;

3, solid self lubricant material: plastics, copper powder, tungsten disulfide powder evenly mix;

4, use press machine, on the matrix surface of alligatoring, form even continuous wear-resistant plastic and carried out rete;

5, sintering plasticizing in the low-temperature sintering stove;

6, machine flinishing;

7, Applicable scope: be applicable to the low low speed that carries, the oil-free lubrication operational site is as lift knuckle bushing, automotive door muff etc.Adopt stainless steel lining matrix applicable in the mordant rugged environment such as seawater.

Embodiment 3: steel-bronze-plastics floating bush, inside and outside layer is working reference plane.

1, lining matrix: the tubular steel-carbon/carbon-copper composite material that adopts powder metallurgy to make, the mesosphere is the 20# steel, internal and external layer is a sintering 6-6-3 bronze;

2, roughening treatment: the inner and outer surface of turning processing matrix, apart from 1-1.5mm * dark 0.5-0.7mm, thread-shaped rough surface;

3, solid self lubricant material: evenly mix at polytetrafluoroethylene, lead powder end;

But 4, suppress respectively, but also internal and external layer is suppressed, is formed evenly continuous wear-resistant plastic simultaneously and carried out rete with the press machine internal and external layer;

5, sintering plasticizing;

6, machine flinishing;

7, Applicable scope: the floating bush that alternative full Cuprum alloy or Nylon are made, realize selflubricating.

Embodiment 4: steel-copper-plastics embedded type selflubricating lining, working reference plane is an internal layer.

1, lining matrix: tubular steel-carbon/carbon-copper composite material that the powder metallurgy process system of employing is moved, skin is the 20# steel, internal layer is a sintered copper alloy 5.

2, roughening treatment:, form netted prismatic lattice at the left and right bull trapezoid spiral groove that revolves of interior working reference plane turning processing;

3, solid self lubricant material: graphite, plastic powders evenly mixes;

4, solid self lubricant material is put into the slit of taper pressing mould 3 and lining matrix 1.Embedding in the trapezoidal groove solid self lubricant material also closely knit with pressure side;

5, sintering in the sintering furnace, temperature 400-500 ℃;

6, machine flinishing;

7, Applicable scope: metallurgical equipment bearing, Φ 120 * Φ 100 * 80mm, hot environment work.The present invention adopts the base steel sintering to cover the copper bi-metal material and makes matrix, and is interior through Φ 99.4mm, sintered copper alloy bed thickness 1.5mm, 90 ° of relative densities; Trapezoid spiral groove width 1.8mm * dark 1.2mm, prismatic grid cross live width 10mm * long 20mm, solid lubricant is the graphite plastic mixture.Endoporus is reserved fine finishing amount 0.6mm, the monolateral permission wearing depth of bearing 0.6m, maximum 0.8mm.

Claims

1. the manufacture method of a self-lubricating solid bush, earlier dusty material is filled in the annular slot of taper pressing mould (3) and lining matrix (1) composition, working pressure machine pushing lining matrix (1) makes dusty material and lining matrix (1) go up in working reference plane (4) and forms strong bonded, plastify through sintering, last machine flinishing becomes goods, it is characterized in that:

A. dusty material is solid self lubricant material (2);

B. the working reference plane of lining matrix (4) is first through roughening treatment before the working pressure machine.

2, the manufacture method of self-lubricating solid bush according to claim 1, the method that it is characterized in that working reference plane (4) roughening treatment of lining matrix (1) are to adopt sintered, spherical copper alloy powder or machining.