CN101303048A - Method for manufacturing high-strength composite material bearing - Google Patents

Abstract

The invention relates to a production method of a bearing made of high-intensity composite material, which is used for the field of low speed and overloading self-lubrication. By adopting the method of the invention, low carbon steel or a tin bronze sheet is punched to a counterbore reticular lamina and a plurality of counterbores are orderly arranged on the reticular lamina. The reticular lamina is welded on a basal body of a bearing and the counterbores face the basal body material; and injection moulding is carried out to produce a semi-finished bearing made of composite material. The invention has the advantages that a thin sheet provided with holes has low cost, simple production and universal use for equipment and saves the energy and time for repetitive sintering. Furthermore, the thin sheet has flexible size, is not limited by the size of a high temperature furnace, saves a large quantity of nonferrous metal resources and can be directly combined on the outer circle of a joint so as to greatly improve the combined strength and the service life, thus avoiding the occurrence of cracking after sticking.

Description

The manufacture method of high-strength composite material bearing

Technical field

The present invention relates to the manufacture method of a high-strength composite material bearing, be used for the selflubricating field of low speed, heavy duty.

Background technique

The production of self lubricating material now is to go up the compound plastics with self-lubricating property of sintered, spherical copper powder after heat at matrix sheet material (steel or copper alloy plate), rolls into axle sleeve then or to becoming the wearing plate, facing plate form; Or on copper powder sintered metal mesh or the compound plastics of helical metal wire after heat again with self-lubricating property, roll into axle sleeve or chute board form.The composite material of producing in order to last method has following shortcoming: temperature and time and pressure are difficult to control during the sintered, spherical copper powder on matrix sheet material, and yield rate is low, energy consumption is high, manufacturing mechanism is heavy and not general; Thereby be subjected to combined strength bination restriction selflubricatingpiston thickness to be restricted the working life of having limited bearing; Add height wiry and be difficult to control, occur easily flying a phenomenon, and influence lubrication effect; Stock utilization is low, the waste raw material; The product physical dimension is subjected to High Temperature Furnaces size restrictions, underaction.Composite technology also has a lot of methods, but is difficult to selflubricatingpiston material and the compound production field of metallic matrix; It is necessary developing a kind of new method for composite material based on energy saving, the purpose that economizes in raw materials.

Summary of the invention

The manufacture method that the purpose of this invention is to provide a kind of high-strength composite material bearing is made simple, Device-General, has saved the energy and the time of sintering repeatedly; Size is flexible, is not subjected to the High Temperature Furnaces size restrictions; Save a large amount of nonferrous metal resources.

Technical solution of the present invention is: a kind of manufacture method of high-strength composite material bearing, this method is that low carbon steel or tin bronze plate are struck out the counterbore expanded metals, orderly a plurality of counterbores of arrangement on the expanded metals are welded to expanded metals on the bearing matrix, and the counterbore direction is towards body material; Add the mould injection moulding, make the compound material bearing blank.Concrete manufacturing step is:

(1) at first selects the low carbon steel or the tin bronze sheet material of suitable thickness by the bearing requirement, press off the hole in the sheet material upper punch, bore dia is low carbon steel or tin bronze sheet metal thickness 2～3 times, counter bore hole diameters is low carbon steel or tin bronze sheet metal thickness 6～10 times, the counterbore angle is 90 °～120 °, hole pitch is low carbon steel or tin bronze sheet metal thickness 15～25 times, and arranging of hole adopts equilateral rhombus to arrange; Oxide layer, greasy dirt are removed in the surface;

(2) the bearing matrix surface is removed oxide layer, greasy dirt;

(3) utilize resistance welding with low carbon steel or tin bronze expanded metals and the stitch welding of bearing body weigh together, the counterbore direction is towards the bearing matrix, and soldering point solubility reaches 60%;

(4) composite board after will welding is placed in single cast gate, the single channel mould, and with 120～150MPa pressure, 165～215 ℃ temperature is injected in the mould with the modified polyacetal handled well;

(5) composite board is machined to the physical dimension of requirement, wrapped bearing bush or chute board and other form antifriction bearings;

The invention has the beneficial effects as follows that the present invention has following advantage compared with the prior art: perforated plate have cost low, make simple, Device-General, saved the energy and the time of sintering repeatedly; Size is flexible, is not subjected to the High Temperature Furnaces size restrictions; Save a large amount of nonferrous metal resources; Plastics can use repeatedly, have reduced product cost; Composite material shear strength, combined strength bination increase (being equivalent to a plurality of rivets connects) greatly; Be used in no composite surface cracking phenomena on the water conservancy project chute board; Can be directly compound on the outer ring in joint, improved combined strength bination and working life greatly, avoided the stickup cracking phenomena.

Embodiment:

Further specify of the present invention below in conjunction with embodiment.

Embodiment 1:

A. get GE220HFOB08 joint shaft bearing cycle blank, inner ball surface is machined to S φ 279;

B. get the thick Q235 cold rolled sheet of 0.35mm 8 240 * 80, mold pressing S φ 279;

C. punching press perforate, opening diameter φ 1, counter bore hole diameters φ 3.5,90 ° of counterbore angles, hole centre distance 8mm;

D. pruning the corner is welded in cold-reduced sheet on the outer ring of joint shaft bearing;

E. injection moulding modified polyacetal on request, internal mold is of a size of S φ 273;

F. finish grind outer ring outer surface and inner ball surface to requiring size;

G. the endosphere of packing into rotates flexibly, and self-lubricating effect is good, rotates flexibly no cracking phenomena.

Embodiment 2:

A. get FOB08S500-280-26 chute board steel base, internal stress is eliminated in quenching with Subsequent tempering;

B. slot fluting size 500 * 100 * 3 on request in steel base;

C. the cutting of counterbore expanded metals is ended 500 * 100, tin bronze expanded metals thickness is 0.5mm;

D. it is inside the tin bronze expanded metals to be welded in the matrix groove counterbore;

E. shutoff groove two ends add the mould injection moulding on groove;

F. compound good slide plate being put into 100～120 ℃ deep fat boiled 20～40 minutes;

G. blank processing is only required tolerance dimension.

Claims (1)

1, the manufacture method of high-strength composite material bearing is characterized in that, this method is that low carbon steel or tin bronze plate are struck out the counterbore expanded metals, and orderly a plurality of counterbores of arrangement on the expanded metals are welded to expanded metals on the bearing matrix, and the counterbore direction is towards body material; Add the mould injection moulding, make the compound material bearing blank.Concrete manufacturing step is:

(1) at first selects the low carbon steel or the tin bronze sheet material of suitable thickness by the bearing requirement, press off the hole in the sheet material upper punch, bore dia is low carbon steel or tin bronze sheet metal thickness 2～3 times, counter bore hole diameters is low carbon steel or tin bronze sheet metal thickness 6～10 times, the counterbore angle is 90 °～120 °, hole pitch is low carbon steel or tin bronze sheet metal thickness 15～25 times, and arranging of hole adopts equilateral rhombus to arrange; Oxide layer, greasy dirt are removed in the surface;

(2) the bearing matrix surface is removed oxide layer, greasy dirt;

(3) utilize resistance welding with low carbon steel or tin bronze expanded metals and the stitch welding of bearing body weigh together, the counterbore direction is towards the bearing matrix, and soldering point solubility reaches 60%;

(4) composite board after will welding is placed in single cast gate, the single channel mould, and with 120～150MPa pressure, 165～215 ℃ temperature is injected in the mould with the modified polyacetal handled well;

(5) composite board is machined to the physical dimension of requirement, wrapped bearing bush or chute board and other form antifriction bearings.