CN2435562Y

CN2435562Y - High-temp. oilless lubrication bearing

Info

Publication number: CN2435562Y
Application number: CN 00233476
Authority: CN
Inventors: 吕红玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-22
Filing date: 2000-05-22
Publication date: 2001-06-20
Anticipated expiration: 2010-05-22

Abstract

The utility model relates to a high-temperature no-oil lubrication global bearing. A nickel phosphorus chemistry coating layer is plated on the surfaces of inner and outer rings of the bearing, roll ball, and three metal member fittings, and then, a layer of LHY-MC-2 solid lubricant is inlaid in ring passages of the inner and outer rings and on the surface of the ball in scraping and rolling ways, and a self-lubrication film is formed. Within the temperature of 150-170 DGR and in the state of low speed high load, the utility model can work for a long time with the form of no-oil lubrication, and has the advantages of much longer service life than other bearings and convenient operation.

Description

Extra-high-speed temperature oil-free lubrication whole world bearing

The utility model relates to a kind of extra-high-speed temperature oil-free lubrication whole world bearing.

Bearing has been a general knowledge with oil lubrication, but under extra-high-speed tender feeling condition, with oil lubrication just dying.Because machine oil is volatile under 150 ℃, can lose efficacy more than 150 ℃.Butter is easily aging drying shrinkage more than 300 ℃, can cause burning more than 500 ℃, burns out a bearing.As electroceramics, pottery, refractory material kiln car, in fire district and axle district, seal when bad, easily cause more than 150 ℃ until five, 600 degree high temperature.Axle temperature is also up to 500 ℃ sometimes for the rolling mill bearing, and paper oar pond bearing and some chemical industry equipment bearing also reach 200-300 ℃.In 150-300 ℃ of warm area, conventional bearing life is about a half a year, what bearing life had in the time of 300-500 ℃ only reaches 1-2 month.This extreme leading the damage both made economy impaired, made operation inconvenience again.

For solving the bearing working problem under the extra-high-speed temperature, people design a lot of ways.Research can be used NM as the Luoyang bearing ₂₀The high temperature resistant bearing that material is made, the used main bearing that resists 1000 ℃ when returning the earth for satellite.But its life-span has only several seconds.And the various polymer composite self oiling bearings that Chinese Academy of Sciences's orchidization is done, also can only anti-100-300 ℃ high temperature.Even circuit, ball are carried out the bearing of 500-600 ℃ of self-lubrication treatment ability, also being easy to damage bearing life is stopped because of retainer.And last each bearing of genus involves great expense, if use just uneconomical under the high year situation of low speed.

Purpose in model utility provides a kind of extra-high-speed temperature oil-free lubrication whole world bearing, and is lubricated for a long time under the high no oily condition of carrying of low speed to guarantee bearing in 150-570 ℃ of high-temperature zone, economy and durability.

The purpose of this utility model is achieved in that produces bearing metal accessory-inside and outside ring, ball three accessories with conventional method earlier, three accessories is imposed chemical plating-nickel phosphor plating, coating 5-8 μ m.Impose heat treatment after the plating again.LHY-MC-6 ^#Solid lubricant adds preservative, antioxidant, after mixing, the circuit of inside and outside ring is carried out obliterating roll embedding; Again oiling agent and ball are put into jointly and rolled embedding in the pebble mill.Make the self-lubricating film thickness of wiping embedding and rolling embedding reach 10-20 μ m.At last, three accessories are assembled into global bearing.

The utility model bearing can be under 150-570 ℃ high temperature, with the form of oil-free lubrication, and long-term work under the high state that carries of low speed.With metal bearing ratio in the past, because the height of the hardness ratio Bearing Steel of nickel-phosphorus coating, so more wear-resisting.And the surface is closely knit, has significantly reduced the such microscopic crack martensite in former bearing surface, has strengthened the ability of antifatigue damage.With former macromolecular material bearing ratio, because of nothing has flimsy retainer, so prolonged working life greatly.And cost is very low, and is economical and practical.The long-term work between 0.1-0.2 μ of the lubricating coefficient of the utility model bearing can not surpass the index request that lubricates the limit 0.4 μ.And the macromolecular material bearing tends to because of fatigue damage, and lubricating coefficient raises gradually and surpasses 0.4 μ during work, causes and quickens to damage.

Concrete structure of the present utility model is provided by following examples and accompanying drawing.Accompanying drawing is the sectional drawing (because of nickel-phosphorus coating and lubricant film layer are too thin, can not draw in proportion with metal body, can only amplify them, so that watch identification) according to the Bearing fittings that the utility model proposes.

This bearing is by outer shroud metallic object (1), outer shroud coating (2), outer shroud circuit lubricant film layer (6) and interior ring gold Belong to body (9), interior ring coating (8), interior ring circuit lubricant film layer (7) and ball metallic object (3), ball coating (4), ball lubricant film layer (5), composition.

Describe manufacturing situation of the present utility model in detail below in conjunction with pattern.

Method is produced three Metal fittings of bearing, outer shroud metal body (1), interior ring metal body (9), ball metal body (3) routinely earlier.Three accessories are imposed ni-p electroless plating, generate outer shroud coating (2), interior ring coating (8), ball coating (4).The good solid lubricant of mixed preparing, circuit and ball surface are wiped embedding and rolled embedding again, make outer shroud circuit lubricant film layer (6), interior ring circuit lubricant film layer (7) and ball lubricant film layer (5).At last three accessories are assembled into global bearing, have just made the utility model bearing.

[annotate LHY-MC-6 ^#Solid lubricant is that chemical plant, Yanling County, Henan Province produces.Its friction factor is 0.1-0.2 μ]

Claims

1, the global bearing of a kind of extra-high-speed temperature oil-free lubrication, comprise outer shroud metal body (1) and interior ring metal body (9) and ball metal body (3), it is characterized in that: the metal body surface to global bearing inside and outside ring, ball three accessories is coated with nickel-phosphorus coating: outer shroud coating (2), interior ring coating (8), ball coating (4), and in the inside and outside ring circuit of coating outside, one deck LHY-MC-2 is arranged with the ball surface ^#Solid lubricant film: outer shroud circuit profit rete (6), interior ring circuit profit rete (7), solid lubrication rete (5).

2, the global bearing of extra-high-speed temperature oil-free lubrication according to claim 1, it is characterized in that: nickel-phosphorus coating thickness is 5-8 μ m, LHY-MC-2 ^#The solid lubrication thicknesses of layers is 10-20 μ m.