CN2391049Y

CN2391049Y - Double-metal insert bearing containing solid lubricant

Info

Publication number: CN2391049Y
Application number: CN 99224781
Authority: CN
Inventors: 金成文
Original assignee: DALIAN JINZHOU COMPOSITE BEARING INST
Current assignee: DALIAN JINZHOU COMPOSITE BEARING INST
Priority date: 1999-08-09
Filing date: 1999-08-09
Publication date: 2000-08-09
Anticipated expiration: 2009-08-09

Abstract

The utility model relates to a double-metal inserted bearing with solid lubricant, which is a bearing used for hydraulic machinery of hydroelectric power generating equipment or high load operating condition. The wall of a bearing is provided with through holes which are regularly distributed; the through holes are inlaid with solid lubricant; the inner surface of a lining is provided with a cross mesh-shaped groove which is adopted as a sand discharging groove or an oil groove. The surface of an inner lining is provided with a sintering copper powder metal lubricating layer with solid lubricant; thus, the self lubricating property is strengthened, and the service life of the bearing is extended.

Description

The dual damascene bearing that contains solid lubricant

The utility model relates to a kind of dual damascene bearing that contains solid lubricant, is applicable to the bearing of the water conservancy project machinery of the bearing of water generating equipment guide vanes of water turbine or slow speed, high loading working condition.

At present, the applied structure sand draining type of the guide vanes of water turbine bearing metal base inlaid solid lubrication agent self oiling bearing of water generating equipment industry, it is to be outer steel bushing with carbon steel, the bimetal matrix of liner copper sheathing, the inlaid solid lubrication agent, internal surface has the bearing of netted sediment ejection trough, this kind bearing is in practical application, especially on water generating equipment is used, because bearing inner surface only depends on the solid lubricant of inlaying on the bearing matrix to provide lubricated, greasy property is limited, serious wear between the diameter of axle and the bearing, and also shorten relatively the working life of the diameter of axle and bearing.

In view of the shortcoming or the deficiency of above-mentioned technology, the purpose of this utility model provides a kind of bearing of enhancing self-lubricating property that has, and contains the dual damascene bearing of solid lubricant.

The purpose of this utility model can realize by following technical proposals: the dual damascene bearing that contains solid lubricant comprises with the carbon steel being that overcoat is lining with the bimetal, the bearing of interference fit, rule a plurality of through holes that distribute on bearing wall, inlaid solid lubrication agent in through hole, have many grooves that intersect on the sleeve inner surface and constitute netted sediment ejection trough or oil groove, bimetal liner is to be matrix with the copper coin, surperficial within it sintering contains the metal lubrication layer of the copper powder formation of solid lubricant, improves self-lubricating property.

Can also be that bimetal liner is to be matrix with the steel plate, the metal layer that surperficial within it sintering contains the copper powder formation of solid lubricant improves self-lubricating property.

The utility model compared with prior art, the inlaid solid lubrication that it is characterized in that this bearings synthesis and have the metal lubrication layer that netted sediment ejection trough and sintering contain the solid lubricant copper powder, strengthened the self-lubricating property of bearing, reduce the friction factor of bearing, further prolonged the working life of bearing.

Fig. 1 is the utility model view profile.

Fig. 2 is the A A sectional view of Fig. 1.

1--overcoat, 2--lining base, 3--metal lubrication layer, 4--solid lubricant, 5--groove.

Specifically describe the utility model embodiment below:

Shown in accompanying drawing, it is matrix that bimetallic outer steel bushing 1 can be selected Fine Steel Casting iron for use, machined into becomes the garden barrel shape, external diameter leaves the steel bushing of surplus, low carbon steel plate or tin bronze plate surface are evenly applied the copper powder that contains solid lubricant, and the weight ratio of copper powder and solid lubricant is 90: 10, and solid lubricant is made of graphite and molybdenum disulfide, wherein graphite accounts for 70%, and molybdenum disulfide accounts for 30%.Then it is sent into high temperature sintering furnace and carry out sintering; sintering temperature should be controlled at: about 850 ℃ of low carbon steel plates; 820 ℃ of left and right sides sintering times of tin bronze plate should reach about 2 hours; should adopt hydrogen shield in the sintering process; bimetal plate behind the high temperature sintering furnace sintering is through mill milling; make it reach thickness and density that regulation requires; the thickness of the copper powder that contains solid lubricant of steel plate and tin bronze plate surface sintering should be not less than 1.5mm, this sheet material is cut off the length of run width with guillotine shear all leave machining allowance.With planer its surface being dug the cross-like groove then forms netted at last, being rolled into axle sleeve again packs in the matrix of bearing steel bushing with interference fit, constitute the bearing of steel bushing and bimetal liner, bore open-work at this bearing support, promptly drill through the through hole of bearing wall, inlaid solid lubrication agent in the hole again--teflon is the main plastic rod that recharges other additive, carry out finish turning or grinding after having inlayed elements such as endoporus, external diameter, end face are put in place by design drawing processing, promptly become the dual damascene bearing that contains solid lubricant.

Claims

1, the dual damascene bearing that contains solid lubricant, comprise with the carbon steel being that overcoat is lining with the bimetal, the bearing of interference fit, rule a plurality of through holes that distribute on bearing wall, inlaid solid lubrication agent in through hole, have many grooves that intersect on the sleeve inner surface and constitute netted sediment ejection trough or oil groove, it is characterized in that: bimetal liner is to be matrix with the copper coin, and the metal lubrication layer that sintering contains the copper powder formation of solid lubricant is gone up on the surface within it.

2. bearing according to claim 1 is characterized in that bimetal liner is is the metal lubrication layer that the surperficial sintering of matrix contains the copper powder formation of solid lubricant with the steel plate within it.