CN1051235A - Flexible composite bearing with copper mesh base and manufacture method thereof - Google Patents

Abstract

What the present invention relates to is flexible composite bearing with copper mesh base and manufacture method thereof.It is characterized in that the copper wire mesh grid is middle skeleton, the filling-modified polytetrafluoroethylplastic plastic of mesh is formed.It is prepared by slurry, and operation such as copper wire mesh grid finish rolling, plastic-coated are compound, sintering of plastics is made.

It is simple that the present invention has technology, and cost is low, and self-lubricating property is good, is able to bear strong corrosion, and easily rolls small size bearing, but roll-forming not after the blanking also in the hole of just can packing into, has improved characteristics such as the convenience of assembling and flexibility.

Description

Flexible composite bearing with copper mesh base and manufacture method thereof

What the present invention relates to is novel sliding bearing and manufacture method thereof, belongs to mechanical parts.

In recent years, steel back composite opening bearing has been obtained widely in China's mechanical engineering every field and has been used.It is with plastics as the friction surface layer, Oilite bronze is a transition layer, the low-carbon cold rolling steel plate is an enhancement layer, the three-decker composite material that three kinds of materials is combined as a whole by certain manufacturing process.With the bearing of this made, cost height, technology is comparatively complicated, rolls the small size bearing difficulty, and corrosion-resistant during assembling, be used special-purpose press mounting tool, as assembles the improper interior hole dimension that also can influence lining.

The objective of the invention is at the problems referred to above, provide a kind of technology simple, cost is low, self-lubricating property is good, be able to bear strong corrosion, easily roll small size bearing (diameter 8mm is following), also but roll-forming not after the blanking in the hole of just can packing into, has improved the convenience of assembling and the flexible composite bearing with copper mesh base and the manufacture method thereof of flexibility.

Flexible composite bearing with copper mesh base is skeleton in the middle of being by the copper wire mesh grid, and the filling-modified polytetrafluoroethylplastic plastic of mesh is formed.The modified Teflon plastics are base-material with the ptfe emulsion, add the preparation of graphite, glass fibre and ethanol or acetone.Its ratio is ptfe emulsion 64-80%, graphite 4-8%, glass fibre 20-28%, and ethanol or acetone and ptfe emulsion ratio are 0,7-1,2: 1.

For making flexible composite bearing with copper mesh base, can take following method.

1, slurry preparation: with graphite, glass fibre and concentration is ptfe emulsion mixing and stirring in container of 60%, adds ethanol or acetone again, continues to stir till the formation starchiness.

2, copper wire mesh grid finish rolling; Copper wire braiding mesh number is the 20-60 order, mesh grid is rolled on milling train, amount of rolling be net thick 0,1-0,3%.

3, plastic-coated is compound; On special-purpose coating machine slurry is uniformly coated on the copper mesh, slurry is thick to be 0,2-0,8mm, again through compound roll extrusion, makes the copper mesh upper and lower surface form plastic layer, and thickness is asymmetric, the total thickness size than finished product sheet material thickly add 0,15-0,20mm.

4, oven dry; Dry at drying oven, its temperature is controlled at 100-180 ℃, time 10-20 minute.

5, breaking down; Leave finish rolling amount 0,02-0,05mm. during breaking down

6, sintering of plastics; Under nitrogen protection, carry out sintering at the sintering of plastics stove, temperature 360-380 ℃ keep 0,5-5 minute, cool off then below 80 ℃ and come out of the stove.

7, finish rolling; On finishing mill, plate rolling is arrived the necessary requirement thickness size.

Claims (2)

1, a kind of flexible composite bearing with copper mesh base, by the copper wire mesh grid is middle skeleton, the filling-modified polytetrafluoroethylplastic plastic of mesh is formed, it is characterized in that the modified Teflon plastics are base-material with the ptfe emulsion, add the preparation of graphite, glass fibre and ethanol or ketone, ratio is ptfe emulsion 64-76%, graphite 4-8%, glass fibre 20-28%, and ethanol or acetone and ptfe emulsion ratio are 0,7-1,2: 1.

2, the manufacture method of flexible composite bearing with copper mesh base according to claim 1, it is characterized in that the preparation of a slurry, with graphite, glass fibre and concentration are ptfe emulsion mixing and stirring in container of 60%, adding ethanol or acetone again continues to stir till the formation starchiness, b copper wire mesh grid finish rolling, copper wire braiding mesh number is the 20-60 order, mesh grid is rolled on milling train, amount of rolling is a net thick 0,1-0,3%, the c plastic-coated is compound, on special-purpose coating machine, slurry is uniformly coated on the copper mesh, slurry is thick to be 0,2-0,8mm again through compound roll extrusion, makes the copper mesh upper and lower surface form plastic layer, thickness is asymmetric, and the total thickness size adds 0 than finished product sheet material is thick, 15-0,20mm; The d oven dry; dry at drying oven, its temperature is controlled at 100-180 ℃, time 10-20 minute; the e breaking down; leave finish rolling amount 0,02-0,05mm during breaking down, the f sintering of plastics carries out sintering at the sintering of plastics stove under nitrogen protection; temperature 360-380 ℃ keep 0,5-5 minute; cool off then below 80 ℃ and come out of the stove, g finish rolling is arrived the necessary requirement thickness size with plate rolling on finishing mill.