CN109128146A - A kind of preparation method of the corrosion-resistant self-lubricating bearing of water pump - Google Patents

A kind of preparation method of the corrosion-resistant self-lubricating bearing of water pump Download PDF

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Publication number
CN109128146A
CN109128146A CN201710465261.4A CN201710465261A CN109128146A CN 109128146 A CN109128146 A CN 109128146A CN 201710465261 A CN201710465261 A CN 201710465261A CN 109128146 A CN109128146 A CN 109128146A
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CN
China
Prior art keywords
powder
preparation
self
lubricating
raw material
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Pending
Application number
CN201710465261.4A
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Chinese (zh)
Inventor
刘建军
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Ningbo Zhongyi Automation Equipment Co Ltd
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Ningbo Zhongyi Automation Equipment Co Ltd
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Priority to CN201710465261.4A priority Critical patent/CN109128146A/en
Publication of CN109128146A publication Critical patent/CN109128146A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/16—Metallic particles coated with a non-metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • B22F1/105—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing inorganic lubricating or binding agents, e.g. metal salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/142—Thermal or thermo-mechanical treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum

Abstract

The invention discloses a kind of water pump preparation methods of corrosion-resistant self-lubricating bearing, the specific steps of this method include forming self-lubricating powder raw material to the modification of material powder grinding and mixing, Sol-gel Coated and high-temperature process, then by compression moulding, sintering, the process being finally surface-treated, wherein material powder is formed according to mass percent by following composition proportion: molybdenum-iron powder 5-10%, chromic carbide iron powder 5-10%, nickel powder 3-5%, niobium powder 0.5-1%, graphite 3-5%, surplus are iron powder.Self-lubricating bearing of the invention has both excellent self-lubricating function and mechanical performance, and high temperature resistance is good, while having good corrosion-resistant, abrasion resistance properties, and durability is high, long service life, and water pump is suitble to use.

Description

A kind of preparation method of the corrosion-resistant self-lubricating bearing of water pump
Technical field
The present invention relates to the preparations of a kind of preparation method of bearing more particularly to a kind of corrosion-resistant self-lubricating bearing of water pump Method.
Background technique
Bearing is the important spare part in contemporary mechanical equipment, its major function is to support mechanical rotary body.With machine The demand of the running speed of tool and the increase of load and bad working environments, to the lubricity of bearing, more stringent requirements are proposed.From Sealing device of the lubriation material bearing technology due to saving lubricating arrangement and lubricant grease, greatly simplifies the design of bearing, at Originally it is greatly lowered, there is good economic and ecological environment benefit, become current development trend.Wherein high mechanical strength The important hot spot for being developed into tribological field of good self-lubricating composite with frictional behaviour.
Self-lubricating bearing is made by the way that solid lubricant is added in metallic matrix raw material in powder metallurgy self-lubricating technology Composite material.Self-lubricating bearing forms one layer of relatively stable lubricating film in opposite sliding surfaces during exercise, while by " certainly Consumption " repairs the lubricating film being damaged, reaches good lubrication and friction reducing effect, play in mechanical manufacturing field more and more important Effect.However, PM self lubricated bearings material often deposit under high temperature environment it is easy to oxidize, mechanical strength is low etc. asks Topic.Patent 201310414116.5 is by adding the obtained self-lubricating bearing material of suitable iron sulfide, ferromanganese powder, to a certain extent The high temperature resistance of material is improved, but limited to mechanical performance promotion, the self-lubricating bearing material of high quality can not be provided, it is full The growing demand of foot.
Summary of the invention
The object of the invention is to remedy the disadvantages of known techniques, provides one kind and has both good high temperature resistance and machinery The preparation method of the corrosion-resistant self-lubricating bearing of the water pump of intensity.
The present invention is achieved by the following technical solutions:
A kind of preparation method of the corrosion-resistant self-lubricating bearing of water pump, which is characterized in that this method comprising the following specific steps
(1) preparation of material powder, the material powder are matched by mass percentage by the following raw material: molybdenum-iron powder 5-10%, Chromic carbide iron powder 5-10%, nickel powder 3-5%, niobium powder 0.5-1%, graphite 3-5%, surplus is iron powder, is 200-300 μm each by granularity Raw material, which is put into ball mill, grinds 2-4 hours to get the material powder；
(2) preparation of complex sol, the complex sol are made from the following raw materials in parts by weight: ethyl orthosilicate 0.5-1, ethylene Ethyl triethoxy silicane alkane 3-5, calgon 0.3-0.5, nano aluminium oxide 0.5-1, nano graphite powder 0.5-1, dehydrated alcohol 3-5,4-8% acetum 10-15, barium mahogany sulfonate 0.5-1, the preparation method of the complex sol be first by ethyl orthosilicate, Vinyltriethoxysilane is mixed with dehydrated alcohol, and then addition nano graphite powder, nano aluminium oxide are uniformly dispersed, and is finally delayed Slowly it is added dropwise to 60-70 DEG C of stirring 0.5-1h in acetum, pH is adjusted to neutrality after cooling, remaining raw material is added after mixing evenly Room temperature stands 1-2h to get complex sol；
(3) modification of material powder, by step (1) mixed powder and step (2) in complex sol 8:1-10 by weight: 1 is mixed evenly, after 100-120 DEG C of drying process 3-5h under inert atmosphere 600-800 DEG C of heat treatment 2-4h, it is cooling after in 1-2h is ground in ball mill, derives from lubrication powder raw material；
(4) the self-lubricating powder raw material in step (3) is first fitted into shaft sleeve die in 550-650MPa by the preparation of bearing blank It is suppressed, dwell time 5-10min, is then put into a sintering furnace in lower 1200 DEG C of -1250 DEG C of sintering 1-2h of inert atmosphere, Obtain bearing blank；
(5) bearing blank that step (4) obtains is surface-treated to get the corrosion-resistant self-lubricating bearing of water pump.
The invention has the advantages that
The present invention is formed compound using ethyl orthosilicate, vinyltriethoxysilane hydrolysis and being blended with nano graphite powder etc. Colloidal sol coats the material powders such as iron powder, graphite, then high-temperature process, is formed on the interface between material powder uniform SiC/Si02 compound coating layer, can play and promote high temperature resistant, abrasion resistance and the effect of hardness and play improvement The effect of self-lubricating property, and binding force is strong between material, good mechanical property；Meanwhile passing through material powder and remaining raw material Selection and compound synergic act on, the self-lubricating bearing made has both excellent self-lubricating function and mechanical performance, high temperature resistant Performance is good, while having good corrosion-resistant, abrasion resistance properties, and durability is high, long service life, and water pump is suitble to use.
Specific embodiment
A kind of preparation method of the corrosion-resistant self-lubricating bearing of water pump, method comprising the following specific steps
(1) preparation of material powder, the material powder are matched by mass percentage by the following raw material: molybdenum-iron powder 5%, micro- Carbon ferrochrome powder 5%, nickel powder 3%, niobium powder 0.5%, graphite 3%, surplus are iron powder, and each raw material that granularity is 200-300 μm is put into ball 2 hours are ground in grinding machine to get the material powder；
(2) preparation of complex sol, the complex sol are made from the following raw materials in parts by weight: ethyl orthosilicate 0.5, vinyl Triethoxysilane 3, calgon 0.3, nano aluminium oxide 0.5, nano graphite powder 0.5, dehydrated alcohol 3,4% acetum 10, barium mahogany sulfonate 0.5, the preparation method of the complex sol be first by ethyl orthosilicate, vinyltriethoxysilane with Dehydrated alcohol mixing, then addition nano graphite powder, nano aluminium oxide are uniformly dispersed, and are finally slowly added dropwise 60 in acetum PH is adjusted to neutrality after cooling by DEG C stirring 0.5h, remaining raw material is added, and room temperature stands 1h to get complex sol after mixing evenly；
(3) modification of material powder mixes the mixed powder in step (1) with the complex sol 8:1 by weight in step (2) It stirs evenly, in the lower 600 DEG C of heat treatment 2h of inert atmosphere after 100 DEG C of drying process 3h, grinds 1h in ball mill after cooling, obtain Self-lubricating powder raw material；
(4) the self-lubricating powder raw material in step (3) is first fitted into shaft sleeve die and carries out in 550MPa by the preparation of bearing blank Compacting, dwell time 5min then put into a sintering furnace in the lower 1200 DEG C of sintering 1-2h of inert atmosphere, obtain bearing blank；
(5) bearing blank that step (4) obtains is surface-treated to get the corrosion-resistant self-lubricating bearing of water pump.
Through examining, bearing material performance obtained above is as follows:
Maximum load capacity (N): 3700；
Abrasion loss (mm): 0.196；
Applicable maximum temperature: 600 DEG C.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its Equivalent defines.

Claims (1)

1. a kind of water pump preparation method of corrosion-resistant self-lubricating bearing, which is characterized in that this method comprising the following specific steps (1) preparation of material powder, the material powder are matched by mass percentage by the following raw material: molybdenum-iron powder 5-10%, micro- Carbon ferrochrome powder 5-10%, nickel powder 3-5%, niobium powder 0.5-1%, graphite 3-5%, surplus is iron powder, is 200-300 μm each by granularity Raw material, which is put into ball mill, grinds 2-4 hours to get the material powder；(2) preparation of complex sol, the complex sol by The raw material of following parts by weight is made: ethyl orthosilicate 0.5-1, vinyltriethoxysilane 3-5, calgon 0.3- 0.5, nano aluminium oxide 0.5-1, nano graphite powder 0.5-1, dehydrated alcohol 3-5,4-8% acetum 10-15, barium mahogany sulfonate 0.5-1, the preparation method of the complex sol are first to mix ethyl orthosilicate, vinyltriethoxysilane and dehydrated alcohol It closes, then addition nano graphite powder, nano aluminium oxide are uniformly dispersed, and 60-70 DEG C of stirring in acetum is finally slowly added dropwise PH is adjusted to neutrality after cooling by 0.5-1h, remaining raw material is added, and room temperature stands 1-2h to get complex sol after mixing evenly； (3) modification of material powder, the mixed powder in step (1) and the complex sol 8:1-10:1 by weight in step (2) is mixed Conjunction stirs evenly, after 100-120 DEG C of drying process 3-5h under inert atmosphere 600-800 DEG C of heat treatment 2-4h, it is cooling after in ball 1-2h is ground in grinding machine, derives from lubrication powder raw material；(4) preparation of bearing blank, it is first that the self-lubricating powder in step (3) is former Material is fitted into shaft sleeve die to be suppressed in 550-650MPa, and dwell time 5-10min is then put into a sintering furnace in lazy Property lower 1200 DEG C of -1250 DEG C of sintering 1-2h of atmosphere, obtain bearing blank；(5) bearing blank for obtaining step (4) carries out surface Processing is to get the corrosion-resistant self-lubricating bearing of water pump.
CN201710465261.4A 2017-06-19 2017-06-19 A kind of preparation method of the corrosion-resistant self-lubricating bearing of water pump Pending CN109128146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710465261.4A CN109128146A (en) 2017-06-19 2017-06-19 A kind of preparation method of the corrosion-resistant self-lubricating bearing of water pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710465261.4A CN109128146A (en) 2017-06-19 2017-06-19 A kind of preparation method of the corrosion-resistant self-lubricating bearing of water pump

Publications (1)

Publication Number Publication Date
CN109128146A true CN109128146A (en) 2019-01-04

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Application Number Title Priority Date Filing Date
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Country Status (1)

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Application publication date: 20190104