CN106050935A - Self-lubricating high-abrasive-resistance alloy bearing - Google Patents

Self-lubricating high-abrasive-resistance alloy bearing Download PDF

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Publication number
CN106050935A
CN106050935A CN201610620495.7A CN201610620495A CN106050935A CN 106050935 A CN106050935 A CN 106050935A CN 201610620495 A CN201610620495 A CN 201610620495A CN 106050935 A CN106050935 A CN 106050935A
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China
Prior art keywords
bearing
warming
self
inner race
incubated
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CN201610620495.7A
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Chinese (zh)
Inventor
楼志伟
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Ningbo Daer Machinery Technology Co Ltd
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Ningbo Daer Machinery Technology Co Ltd
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Priority to CN201610620495.7A priority Critical patent/CN106050935A/en
Publication of CN106050935A publication Critical patent/CN106050935A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • 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
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron

Abstract

The invention discloses a self-lubricating high-abrasive-resistance alloy bearing, which comprises a bearing outer ring, a ball and a bearing inner ring, wherein the surface of the ball is coated with polytetrafluoroethylene; the bearing inner ring is prepared from the following components in percentages by weight: 0.5 to 0.7 percent of C, 0.4 to 0.5 percent of Si, 0.03 to 0.06 percent of B, 0.3 to 0.5 percent of V, 0.2 to 0.5 percent of Mn, 0.10 to 0.16 percent of Mo, 0.08 to 0.12 percent of Nb, 5.5 to 5.8 percent of Cr, 0.07 to 0.1 percent of Zr, 0.15 to 0.2 percent of Re, 0.02 to 0.06 percent of Ta, 0.07 to 0.1 percent of Ni, not more than 0.015 percent of S, not more than 0.02 percent of P and the balance of Fe. The self-lubricating high-abrasive-resistance alloy bearing is small in friction force, little in wear, high in hardness, excellent in toughness, good in contact fatigue performance and long in service life.

Description

A kind of self-lubrication alloy high abrasion bearing
Technical field
The present invention relates to technical field of bearings, particularly relate to a kind of self-lubrication alloy high abrasion bearing.
Background technology
Bearing be the conventional machine components in order to bearing journal or axle upper rotary part for determine rotary shaft with other zero Part relative motion position, reduces the coefficient of friction in its motor process, and ensures its rotating accuracy, its quality and bearing capacity Directly affect the service behaviour of machinery complete machine.
Operation principle according to bearing can be divided into rolling friction bearing (rolling bearing) and sliding friction bearing (sliding axle Hold).Rolling bearing is mainly ball bearing, and ball bearing is general purpose accessory, but anti-wear performance is not enough, weares and teares bigger.
Summary of the invention
The technical problem existed based on background technology, the present invention proposes a kind of self-lubrication alloy high abrasion bearing, friction Power is little, and abrasion is few, and hardness is big, and tenacity excellent, contact fatigue property is good, and service life is long.
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.5～0.7%, Si:0.4～ 0.5%, B:0.03～0.06%, V:0.3～0.5%, Mn:0.2～0.5%, Mo:0.10～0.16%, Nb:0.08～ 0.12%, Cr:5.5～5.8%, Zr:0.07～0.1%, Re:0.15～0.2%, Ta:0.02～0.06%, Ni:0.07～ 0.1%, S≤0.015%, P≤0.02%, surplus is Fe.
In the present invention, each element interaction is as follows:
Carbon (C): as forming the essential element of graphite nodule, can effectively control graphite number and graphite size, meanwhile, Suitable carbon equivalent can make ferrum liquid readily flowed, increases the mold-filling capacity of ferrum liquid, reduces Shrinkage cavity, improves the densification of foundry goods Property, but carbon content is too high, easily produces graphite floatation, affects the performance of cast iron, also can reduce the atmospheric corrosion resistance ability of steel, Increase cold brittleness and the aging sensitivity of steel.
Silicon (Si): as strongly facilitating graphited element, the effect bred can be played again.Higher silicon content is to foundry goods Cast and have the biggest benefit from feeding, the elastic limit of steel, yield point and tensile strength can be significantly improved.Silicone content is high A bit, to being formed, globular graphite is favourable, but silicone content more than 3.0% time, impact flexibility can drastically reduce, moreover it is possible to reduces the welding of steel Performance.Silicon and molybdenum, tungsten, chromium etc. combine, and are improved corrosion resistance and antioxidative effect.
Boron (B): boron Main Function in steel is to increase the quenching degree of steel, thus saves other diluter expensive metals；Steel The boron of middle addition trace just can improve compactness and the hot rolling performance of steel, improves intensity；Boron and nitrogen and oxygen have strong affinity, boiling Rise the boron adding 0.007% in steel, the aging phenomenon of steel can be eliminated.
Vanadium (V): as the excellent deoxidizer of steel, can thinning microstructure crystal grain, improve intensity and toughness.The carbon that vanadium is formed with carbon Compound, can improve resistant to hydrogen corrosive power at high temperature under high pressure.
Manganese (Mn): as good deoxidizer and desulfurizing agent, can eliminate or weaken the red brittleness of the steel caused due to sulfur, from And improve the hot-working character of steel；The solid solution that manganese and ferrum are formed, improves ferrite and the hardness of austenite and intensity in steel；With Time be again the element that formed of carbide, enter in cementite and replace a part of iron atom, manganese in steel owing to reducing critical transitions Temperature, plays the effect of refinement pearlite, the most indirectly plays the effect improving pearlitic steel intensity.Manganese stable austenite tissue Ability be only second to nickel, also strongly increase the quenching degree of steel.
Molybdenum (Mo): energy crystal grain thinning, improves quenching degree and thermostrength, keeps enough intensity and creep resistant when high temperature Ability, improves mechanical performance；The fragility that steel alloy causes can also be suppressed due to fire.
Niobium (Nb): can partly dissolve in solid solution, plays solution strengthening effect；The through hardening of steel is significantly improved when dissolving in austenite Property；Steel belt roof bolt stability can be increased, have post-curing effect.Trace niobium can be in the situation of the plasticity or toughness not affecting steel The intensity of lower raising steel；Owing to having the effect of crystal grain thinning, the impact flexibility of steel can be improved and reduce its brittle transition temperature； When content is more than 8 times of carbon, almost can fix all of carbon in steel, make steel have good resistant to hydrogen performance；At austenite Steel is possible to prevent the oxide isolation intercrystalline corrosion to steel；Due to fixed carbon and precipitation-hardening effect, the height of refractory steel can be improved Warm nature energy, such as creep strength etc..
Chromium (Cr): can improve quenching degree, can significantly improve intensity, hardness and wearability, moreover it is possible to improve the non-oxidizability of steel And corrosion resistance, but plasticity and toughness can be reduced, and also it is carbide former simultaneously, in spheroidal graphite cast-iron, it can be raw with carbon Become M3C-type carbide as effective Hard Inclusion Dispersed precipitate on matrix, can improve hardness and the abrasion resistance of material.Through examination Issuing after examination and approval existing confirmation: containing Cr0.5%, carbide accounts for 15～20%, meets actual demand.
Zirconium (Zr): as carbide, the effect in steel and niobium, tantalum, vanadium are similar, can deaerate, purify And the cryogenic property of crystal grain thinning, beneficially steel, improve punching performance.
Rhenium (Re): affect the type of nonmetallic inclusionsin steel, quantity and form, purifies steel, decreases Al2O3To tired The harm of labor performance, the most highly advantageous to high cycle fatigue and low-cycle fatigue, promote the structural transformation in steel, can be adsorbed on and grow up Solid-state nucleating surface, form thin enriched layer, drop low-surface-energy, hinder crystal growth, thus reduce crystal growth rate, Refinement skeleton, suppresses column crystals growth, and then reduces dendritic segregation and regional segregation, and crystal grain thinning suppresses Temper brittleness Property, improve the thermoplasticity of steel, heat resistance, fatigue behaviour, wearability, resistant to hydrogen embrittlement, non-oxidizability.
Tantalum (Ta): tantalum invigoration effect in ferrous alloy shows as solution strengthening and precipitation strength, former with steel intermediate gap Son such as C, N etc. have high affinity, and the most highly stable with the compound that they are formed, and improve it Content in steel, increases substantially the intensity of steel, and still has preferable toughness.
Nickel (Ni): reinforced ferrite refine pearlite in steel, while improving hardness of steel, to the toughness of steel, moulds Property and other techniques performance infringement little compared with the impact of other alloying elements；For medium carbon steel, owing to nickel reduces pearlite Transition temperature, makes pearlite attenuate；Reduce the phosphorus content of eutectoid point due to nickel again, thus with the carbon steel of identical carbon content Ratio, its pearlite fraction is more, and the intensity making nickeliferous pearlitic ferrite steel is high compared with the carbon steel of same carbon content；Can also carry High steel is to tired drag and reduces the steel sensitivity to breach；The acid and alkali-resistance ability of steel can be improved, to air and salt simultaneously There is resistance to corrosion.
Preferably, Cr element, Ta element, Nb element, the content of Zr element meet following relation: 100 × nCr=100 × (nTa+nNb+nZr)+5.5, wherein nCr、nTa、nNb、nZrRepresent that Cr element, Ta element, Nb element, Zr element are at bearing inner race respectively Component in shared percentage by weight.
Preferably, Ni element, Re element, Mo element, the content of V element meet following relation: nV=nNi+nRe+nMo, its Middle nNi、nRe、nMo、nVRepresent Ni element, Re element, Mo element, V element shared weight hundred in the component of bearing inner race respectively Proportion by subtraction.
Preferably, the preparation technology of bearing inner race includes: melting, cast, quenching, tempering.
Preferably, the concrete operations of quenching are as follows: material after cast is warming up to 570～600 DEG C, insulation 6～8h, then It is warming up to 680～710 DEG C, is incubated 3～4h, then is warming up to 810～830 DEG C, be incubated 2～3h, be then warming up to 890～920 DEG C, Insulation 1.5～2h, then it is warming up to 970～1000 DEG C, it is incubated 3～4h, then takes out, water-cooled to 600～620 DEG C, the most oily cold To 420～450 DEG C, then air cooling is to room temperature.
Preferably, the concrete operations of tempering are as follows: material after isothermal hardening is warming up to 240～245 DEG C, insulation 2.5～ 3h。
Gained bearing anti-wear performance of the present invention and tenacity excellent, hardness is high, and contact fatigue property is good, and service life is long； Chromium element, tantalum element, niobium element, zr element cooperate, and chromium element, tantalum element, niobium element, zr element are solid-solution in austenite In, reduce Carbon diffusion speed, thus delay the transformation of austenite, extend the stage of incubation of martensite transfor mation, be therefore easy to increase Add the ferritic quantity of martensite type；In austenitization, the carbide that these four kinds of elements are formed has " pinning " and makees With, hinder the movement of crystal boundary and growing up of crystal grain, refined the crystal grain of austenite, thus provided for martensite and more have Profit nucleation site so that the quantity of martensite increases in quenching process, and has refined martensitic structure, makes in bearing inner race residual The amount of remaining austenite gradually decreases, and the amount of acicular ferrite is gradually increased and becomes tiny densification, and carbide (Cr, Fe)7C3、 The quantity such as Ta (C, N) increase the most therewith, and the toughness of the present invention, hardness, anti-wear performance and contact fatigue property are greatly improved；Nickel unit Element, rhenium element, molybdenum element, v element cooperate, the oxygen element in the removing present invention, and crystal grain thinning improves impact flexibility, and And cast iron eutectoid transformation temperature can be improved, it is therefore prevented that the graphitization of pearlite is decomposed, and improves bearing mechanical property in hot environment Energy and corrosion resistance, improve the service life of bearing, meet the high request to bearing in actual production process；By using Specified temp and the quenching of time and tempering cooperate, and make austenite change into martensite, increase substantially bearing inner race Toughness, thus meet the actual demand of bearing, then by lonneal, reduces the quenching residual stress of bearing inner race and crisp Property, improve hardness and the wearability of bearing further.
Detailed description of the invention
Below, by specific embodiment, technical scheme is described in detail.
Embodiment 1
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.5%, Si:0.5%, B: 0.03%, V:0.5%, Mn:0.2%, Mo:0.16%, Nb:0.08%, Cr:5.8%, Zr:0.07%, Re:0.2%, Ta: 0.02%, Ni:0.1%, S≤0.015%, P≤0.02%, surplus is Fe.
Embodiment 2
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.7%, Si:0.4%, B: 0.06%, V:0.3%, Mn:0.5%, Mo:0.10%, Nb:0.12%, Cr:5.5%, Zr:0.1%, Re:0.15%, Ta: 0.06%, Ni:0.07%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing inner race includes: melting, cast, quenching, tempering.
Embodiment 3
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.55%, Si:0.55%, B: 0.035%, V:0.45%, Mn:0.25%, Mo:0.15%, Nb:0.09%, Cr:5.75%, Zr:0.075%, Re: 0.19%, Ta:0.025%, Ni:0.095%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing inner race includes: melting, cast, quenching, tempering.
The concrete operations of quenching are as follows: material after cast is warming up to 570 DEG C, are incubated 8h, are then warming up to 680 DEG C, protect Temperature 4h, then it is warming up to 810 DEG C, it is incubated 3h, is then warming up to 890 DEG C, be incubated 2h, then be warming up to 970 DEG C, be incubated 4h, then take Going out, water-cooled to 600 DEG C, then oil is cooled to 450 DEG C, and then air cooling is to room temperature.
The concrete operations of tempering are as follows: material after isothermal hardening is warming up to 240 DEG C, are incubated 3h.
Embodiment 4
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.65%, Si:0.45%, B: 0.055%, V:0.35%, Mn:0.45%, Mo:0.11%, Nb:0.11%, Cr:5.55%, Zr:0.095%, Re: 0.16%, Ta:0.055%, Ni:0.075%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing inner race includes: melting, cast, quenching, tempering.
The concrete operations of quenching are as follows: material after cast is warming up to 600 DEG C, are incubated 6h, are then warming up to 710 DEG C, protect Temperature 3h, then it is warming up to 830 DEG C, it is incubated 2h, is then warming up to 920 DEG C, be incubated 1.5h, then be warming up to 1000 DEG C, be incubated 3h, then Taking out, water-cooled to 620 DEG C, then oil is cooled to 420 DEG C, and then air cooling is to room temperature.
The concrete operations of tempering are as follows: material after isothermal hardening is warming up to 245 DEG C, are incubated 2.5h.
Embodiment 5
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.58%, Si:0.52%, B: 0.04%, V:0.43%, Mn:0.3%, Mo:0.14%, Nb:0.09%, Cr:5.7%, Zr:0.08%, Re:0.18%, Ta: 0.03%, Ni:0.09%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing inner race includes: melting, cast, quenching, tempering.
The concrete operations of quenching are as follows: material after cast is warming up to 580 DEG C, are incubated 7.5h, are then warming up to 690 DEG C, Insulation 3.8h, then it is warming up to 815 DEG C, it is incubated 2.8h, is then warming up to 900 DEG C, be incubated 1.9h, then be warming up to 980 DEG C, insulation 3.7h, then takes out, water-cooled to 605 DEG C, and then oil is cooled to 440 DEG C, and then air cooling is to room temperature.
The concrete operations of tempering are as follows: material after isothermal hardening is warming up to 241 DEG C, are incubated 2.9h.
Embodiment 6
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.62%, Si:0.48%, B: 0.05%, V:0.38%, Mn:0.4%, Mo:0.12%, Nb:0.11%, Cr:5.6%, Zr:0.09%, Re:0.17%, Ta: 0.05%, Ni:0.08%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing inner race includes: melting, cast, quenching, tempering.
The concrete operations of quenching are as follows: material after cast is warming up to 590 DEG C, are incubated 6.5h, are then warming up to 700 DEG C, Insulation 3.2h, then it is warming up to 825 DEG C, it is incubated 2.3h, is then warming up to 910 DEG C, be incubated 1.6h, then be warming up to 990 DEG C, insulation 3.3h, then takes out, water-cooled to 615 DEG C, and then oil is cooled to 430 DEG C, and then air cooling is to room temperature.
The concrete operations of tempering are as follows: material after isothermal hardening is warming up to 244 DEG C, are incubated 2.6h.
Embodiment 7
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.59%, Si:0.51%, B: 0.042%, V:0.42%, Mn:0.35%, Mo:0.13%, Nb:0.095%, Cr:5.68%, Zr:0.083%, Re: 0.178%, Ta:0.035%, Ni:0.086%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing inner race includes: melting, cast, quenching, tempering.
The concrete operations of quenching are as follows: material after cast is warming up to 585 DEG C, are incubated 7.2h, are then warming up to 693 DEG C, Insulation 3.6h, then it is warming up to 818 DEG C, it is incubated 2.6h, is then warming up to 905 DEG C, be incubated 1.8h, then be warming up to 983 DEG C, insulation 3.5h, then takes out, water-cooled to 608 DEG C, and then oil is cooled to 435 DEG C, and then air cooling is to room temperature.
The concrete operations of tempering are as follows: material after isothermal hardening is warming up to 242 DEG C, are incubated 2.8h.
Embodiment 8
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.6%, Si:0.5%, B: 0.048%, V:0.4%, Mn:0.38%, Mo:0.125%, Nb:0.1%, Cr:5.65%, Zr:0.088%, Re: 0.173%, Ta:0.045%, Ni:0.082%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing inner race includes: melting, cast, quenching, tempering.
The concrete operations of quenching are as follows: material after cast is warming up to 588 DEG C, are incubated 6.8h, are then warming up to 695 DEG C, Insulation 3.4h, then it is warming up to 822 DEG C, it is incubated 2.4h, is then warming up to 908 DEG C, be incubated 1.7h, then be warming up to 987 DEG C, insulation 3.4h, then takes out, water-cooled to 610 DEG C, and then oil is cooled to 433 DEG C, and then air cooling is to room temperature.
The concrete operations of tempering are as follows: material after isothermal hardening is warming up to 243 DEG C, are incubated 2.7h.
Embodiment 9
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.5%, Si:0.5%, B: 0.03%, V:0.5%, Mn:0.2%, Mo:0.16%, Nb:0.08%, Cr:5.74%, Zr:0.1%, Re:0.15%, Ta: 0.06%, Ni:0.07%, S≤0.015%, P≤0.02%, surplus is Fe.
Embodiment 10
A kind of self-lubrication alloy high abrasion bearing that the present invention proposes, including bearing outer ring, ball and bearing inner race, wherein Ball surface-coated has politef, and the component of bearing inner race includes by weight percentage: C:0.7%, Si:0.4%, B: 0.06%, V:0.4%, Mn:0.5%, Mo:0.1%, Nb:0.12%, Cr:5.5%, Zr:0.07%, Re:0.2%, Ta: 0.02%, Ni:0.1%, S≤0.015%, P≤0.02%, surplus is Fe.
Embodiment 7-10 gained self-lubrication alloy high abrasion bearing is carried out performance detection, and its result is as follows
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.

Claims (6)

1. a self-lubrication alloy high abrasion bearing, including bearing outer ring, ball and bearing inner race, it is characterised in that wherein roll Bead surface is coated with politef, and the component of bearing inner race includes by weight percentage: C:0.5～0.7%, Si:0.4～ 0.5%, B:0.03～0.06%, V:0.3～0.5%, Mn:0.2～0.5%, Mo:0.10～0.16%, Nb:0.08～ 0.12%, Cr:5.5～5.8%, Zr:0.07～0.1%, Re:0.15～0.2%, Ta:0.02～0.06%, Ni:0.07～ 0.1%, S≤0.015%, P≤0.02%, surplus is Fe.
Self-lubrication alloy high abrasion bearing the most according to claim 1, it is characterised in that Cr element, Ta element, Nb element, The content of Zr element meets following relation: 100 × nCr=100 × (nTa+nNb+nZr)+5.5, wherein nCr、nTa、nNb、nZrRespectively Represent Cr element, Ta element, Nb element, Zr element shared percentage by weight in the component of bearing inner race.
Self-lubrication alloy high abrasion bearing the most according to claim 1 or claim 2, it is characterised in that Ni element, Re element, Mo unit Element, the content of V element meet following relation: nV=nNi+nRe+nMo, wherein nNi、nRe、nMo、nVRepresent Ni element, Re unit respectively Element, Mo element, V element be shared percentage by weight in the component of bearing inner race.
4. according to self-lubrication alloy high abrasion bearing described in any one of claim 1-3, it is characterised in that the preparation of bearing inner race Technique includes: melting, cast, quenching, tempering.
Self-lubrication alloy high abrasion bearing the most according to claim 4, it is characterised in that the concrete operations of quenching are as follows: will After cast, material is warming up to 570～600 DEG C, is incubated 6～8h, is then warming up to 680～710 DEG C, is incubated 3～4h, then is warming up to 810～830 DEG C, it is incubated 2～3h, is then warming up to 890～920 DEG C, be incubated 1.5～2h, then be warming up to 970～1000 DEG C, protect Temperature 3～4h, then takes out, water-cooled to 600～620 DEG C, and then oil is cooled to 420～450 DEG C, and then air cooling is to room temperature.
6. according to self-lubrication alloy high abrasion bearing described in claim 4 or 5, it is characterised in that the concrete operations of tempering are as follows: Material after isothermal hardening is warming up to 240～245 DEG C, is incubated 2.5～3h.
CN201610620495.7A 2016-08-01 2016-08-01 Self-lubricating high-abrasive-resistance alloy bearing Pending CN106050935A (en)

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JP2000248954A (en) * 1999-03-01 2000-09-12 Ntn Corp Rotor support device for turbocharger
CN105587773A (en) * 2016-02-23 2016-05-18 安徽省宁国顺昌机械有限公司 High-hardness bearing
CN105587771A (en) * 2016-02-23 2016-05-18 安徽省宁国顺昌机械有限公司 Bearing long in service life
CN105624569A (en) * 2016-02-23 2016-06-01 安徽省宁国顺昌机械有限公司 High-abrasion bearing
CN105626697A (en) * 2016-02-23 2016-06-01 安徽省宁国顺昌机械有限公司 Rolling bearing with good contact fatigue
CN105673706A (en) * 2016-02-23 2016-06-15 安徽省宁国顺昌机械有限公司 Wear-resistant and corrosion-resistant bearing
CN105757124A (en) * 2016-02-23 2016-07-13 安徽省宁国顺昌机械有限公司 High-toughness and high-rigidity rolling bearing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000248954A (en) * 1999-03-01 2000-09-12 Ntn Corp Rotor support device for turbocharger
CN105587773A (en) * 2016-02-23 2016-05-18 安徽省宁国顺昌机械有限公司 High-hardness bearing
CN105587771A (en) * 2016-02-23 2016-05-18 安徽省宁国顺昌机械有限公司 Bearing long in service life
CN105624569A (en) * 2016-02-23 2016-06-01 安徽省宁国顺昌机械有限公司 High-abrasion bearing
CN105626697A (en) * 2016-02-23 2016-06-01 安徽省宁国顺昌机械有限公司 Rolling bearing with good contact fatigue
CN105673706A (en) * 2016-02-23 2016-06-15 安徽省宁国顺昌机械有限公司 Wear-resistant and corrosion-resistant bearing
CN105757124A (en) * 2016-02-23 2016-07-13 安徽省宁国顺昌机械有限公司 High-toughness and high-rigidity rolling bearing

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Application publication date: 20161026