CN106050936A - Self-lubrication alloy bearing with long life - Google Patents

Self-lubrication alloy bearing with long life Download PDF

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Publication number
CN106050936A
CN106050936A CN201610625331.3A CN201610625331A CN106050936A CN 106050936 A CN106050936 A CN 106050936A CN 201610625331 A CN201610625331 A CN 201610625331A CN 106050936 A CN106050936 A CN 106050936A
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percent
bearing
self
outer ring
bearing outer
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刘正龙
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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 CN201610625331.3A priority Critical patent/CN106050936A/en
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    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • 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
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/60—Ferrous alloys, e.g. steel alloys
    • F16C2204/62—Low carbon steel, i.e. carbon content below 0.4 wt%
    • 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
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/60—Ferrous alloys, e.g. steel alloys
    • F16C2204/64—Medium carbon steel, i.e. carbon content from 0.4 to 0,8 wt%
    • 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
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/60—Ferrous alloys, e.g. steel alloys
    • F16C2204/70—Ferrous alloys, e.g. steel alloys with chromium as the next major constituent
    • F16C2204/72—Ferrous alloys, e.g. steel alloys with chromium as the next major constituent with nickel as further constituent, e.g. stainless steel

Abstract

The invention discloses a self-lubrication alloy bearing with a long life. The bearing comprises a bearing outer ring, balls and a bearing inner ring, wherein surfaces of the balls are coated with polytetrafluoroethylene, and the bearing outer ring is prepared from the following components in percentage by weight: 0.3 percent to 0.6 percent of C, 0.3 percent to 0.5 percent of Si, 0.05 percent to 0.08 percent of B, 0.12 percent to 0.16 percent of V, 0.43 percent to 0.56 percent of Mn, 0.2 percent to 0.3 percent of Ni, 0.05 percent to 0.13 percent of Zr, 4.2 percent to 4.8 percent of Cr, 0.12 percent to 0.15 percent of Mo, 0.08 percent to 0.12 percent of Co, 0.22 percent to 0.26 percent of Cu, 0.07 percent to 0.1 percent of La, not higher than 0.015 percent of S, not higher than 0.02 percent of P and the balance of Fe. The self-lubrication alloy bearing with the long life, provided by the invention, has the advantages of small friction force, low attrition, high hardness, excellent toughness, good contact fatigue performance and long service life.

Description

A kind of self-lubrication alloy high life bearing
Technical field
The present invention relates to technical field of bearings, particularly relate to a kind of self-lubrication alloy high life 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 life 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 life 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 outer ring includes by weight percentage: C:0.3～0.6%, Si:0.3～ 0.5%, B:0.05～0.08%, V:0.12～0.16%, Mn:0.43～0.56%, Ni:0.2～0.3%, Zr:0.05～ 0.13%, Cr:4.2～4.8%, Mo:0.12～0.15%, Co:0.08～0.12%, Cu:0.22～0.26%, La:0.07 ～0.1%, S≤0.015%, P≤0.02%, surplus is Fe.
Preferably, V element, Mn element, Zr element, the content of Cr element meet following relation: 100 × nCr=[100 × (nV+nMn+nZr-0.05)]2+ 4, wherein nV、nMn、nZr、nCrRepresent that V element, Mn element, Zr element, Cr element are at bearing respectively Shared percentage by weight in the component of outer ring.
Preferably, Ni element, Mo element, Co element, the content of La element meet following relation: 100 × nNi=100 × (nMo+nCo+nLa)-0.07, wherein nNi、nMo、nCo、nLaRepresent that Ni element, Mo element, Co element, La element are outside bearing respectively Shared percentage by weight in the component of circle.
Preferably, the preparation technology of bearing outer ring includes: melting, cast, and austenitizing processes, quenching, tempering.
Preferably, the temperature that austenitizing processes is 1020～1050 DEG C, and the time that austenitizing processes is 2～3h.
Preferably, quenching concrete operations are as follows: after being processed by austenitizing, material water is cooled to 480～500 DEG C, the most air-cooled To 320～350 DEG C, then oil is cooled to room temperature.
Preferably, temperature is 180～220 DEG C, and tempering time is 3～4h.
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.
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.
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.
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.
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.
Cobalt (Co): being used in special steel and alloy, the high-speed steel containing cobalt has high high temperature hardness, is simultaneously introduced with molybdenum Maraging steel can obtain ultrahigh hardness and favorable comprehensive mechanical property；Can also reinforced ferrite, add in carbon steel, Can improve the hardness of steel, yield point and tensile strength under annealing or normalized condition, there have percentage elongation and the contraction percentage of area to be unfavorable Impact, impact flexibility reduces also with the increase of cobalt content.Owing to cobalt has antioxygenic property, in heat resisting steel and resistance to heat seal Gold is applied.
Copper (Cu): improve the weather-resistant performance of ordinary low-alloy steel, moreover it is possible to improve intensity and the yield ratio of steel, through solid After molten process and timeliness, ageing strengthening effect can be produced.
Lanthanum (La): 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.
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； V element, manganese element, zr element, chromium element cooperate, and v element, manganese element, zr element, chromium element can be solid-solution in Ovshinsky In body, reduce Carbon diffusion speed, thus delay the transformation of austenite, extend the stage of incubation of martensite transfor mation, be therefore easy to Increase the ferritic quantity of martensite type；In austenitization, the carbide that these four kinds of elements are formed has " pinning " Effect, hinders the movement of crystal boundary and growing up of crystal grain, has refined the crystal grain of austenite, thus provided more for martensite Favorable nucleation position so that the quantity of martensite increases in quenching process, and has refined martensitic structure, makes in bearing outer ring The amount of retained austenite gradually decreases, and the amount of acicular ferrite is gradually increased and becomes tiny densification, and carbide (Cr, Fe)7C3, VC and V4C3Increase the most therewith etc. quantity, the toughness of the present invention, hardness, anti-wear performance and contact fatigue property are greatly improved； Nickel element, molybdenum element, cobalt element, lanthanum element cooperate, and can improve impact flexibility with crystal grain thinning, and can improve cast iron Eutectoid transformation temperature, it is therefore prevented that the graphitization of pearlite is decomposed, improves bearing mechanical property in hot environment and corrosion-resistant energy Power, improves the service life of bearing, meets the high request to bearing in actual production process；By use specified temp and time Between austenitizing process, quench and tempering cooperates, make austenite change into martensite, increase substantially bearing outer ring Toughness, thus meet the actual demand of bearing, then by lonneal, reduces the quenching residual stress of bearing outer ring 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 life 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 outer ring includes by weight percentage: C:0.3%, Si:0.5%, B: 0.05%, V:0.16%, Mn:0.43%, Ni:0.3%, Zr:0.05%, Cr:4.8%, Mo:0.12%, Co:0.12%, Cu: 0.22%, La:0.1%, S≤0.015%, P≤0.02%, surplus is Fe.
Embodiment 2
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.6%, Si:0.3%, B: 0.08%, V:0.12%, Mn:0.56%, Ni:0.2%, Zr:0.13%, Cr:4.2%, Mo:0.15%, Co:0.08%, Cu: 0.26%, La:0.07%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing outer ring includes: melting, cast, and austenitizing processes, quenching, tempering.
Embodiment 3
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.35%, Si:0.45%, B: 0.055%, V:0.15%, Mn:0.44%, Ni:0.29%, Zr:0.06%, Cr:4.7%, Mo:0.13%, Co:0.11%, Cu:0.23%, La:0.09%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing outer ring includes: melting, cast, and austenitizing processes, quenching, tempering.
The temperature that austenitizing processes is 1020 DEG C, and the time that austenitizing processes is 3h.
Quenching concrete operations are as follows: after being processed by austenitizing, material water is cooled to 480 DEG C, the most air-cooled to 350 DEG C, then oil It is cooled to room temperature.
Temperature is 180 DEG C, and tempering time is 4h.
Embodiment 4
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.55%, Si:0.35%, B: 0.075%, V:0.13%, Mn:0.55%, Ni:0.22%, Zr:0.12%, Cr:4.3%, Mo:0.14%, Co:0.09%, Cu:0.25%, La:0.08%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing outer ring includes: melting, cast, and austenitizing processes, quenching, tempering.
The temperature that austenitizing processes is 1050 DEG C, and the time that austenitizing processes is 2h.
Quenching concrete operations are as follows: after being processed by austenitizing, material water is cooled to 500 DEG C, the most air-cooled to 320 DEG C, then oil It is cooled to room temperature.
Temperature is 220 DEG C, and tempering time is 3h.
Embodiment 5
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.38%, Si:0.42%, B: 0.058%, V:0.145%, Mn:0.46%, Ni:0.27%, Zr:0.07%, Cr:4.6%, Mo:0.132%, Co: 0.105%, Cu:0.235%, La:0.087%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing outer ring includes: melting, cast, and austenitizing processes, quenching, tempering.
The temperature that austenitizing processes is 1030 DEG C, and the time that austenitizing processes is 2.8h.
Quenching concrete operations are as follows: after being processed by austenitizing, material water is cooled to 485 DEG C, the most air-cooled to 340 DEG C, then oil It is cooled to room temperature.
Temperature is 190 DEG C, and tempering time is 3.7h.
Embodiment 6
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.52%, Si:0.38%, B: 0.072%, V:0.135%, Mn:0.53%, Ni:0.23%, Zr:0.11%, Cr:4.4%, Mo:0.138%, Co: 0.095%, Cu:0.245%, La:0.082%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing outer ring includes: melting, cast, and austenitizing processes, quenching, tempering.
The temperature that austenitizing processes is 1040 DEG C, and the time that austenitizing processes is 2.2h.
Quenching concrete operations are as follows: after being processed by austenitizing, material water is cooled to 495 DEG C, the most air-cooled to 330 DEG C, then oil It is cooled to room temperature.
Temperature is 210 DEG C, and tempering time is 3.2h.
Embodiment 7
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.4%, Si:0.4%, B: 0.062%, V:0.14%, Mn:0.48%, Ni:0.25%, Zr:0.08%, Cr:4.5%, Mo:0.135%, Co:0.1%, Cu:0.242%, La:0.084%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing outer ring includes: melting, cast, and austenitizing processes, quenching, tempering.
The temperature that austenitizing processes is 1035 DEG C, and the time that austenitizing processes is 2.4h.
Quenching concrete operations are as follows: after being processed by austenitizing, material water is cooled to 490 DEG C, the most air-cooled to 335 DEG C, then oil It is cooled to room temperature.
Temperature is 200 DEG C, and tempering time is 3.4h.
Embodiment 8
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.46%, Si:0.39%, B: 0.07%, V:0.138%, Mn:0.5%, Ni:0.24%, Zr:0.1%, Cr:4.45%, Mo:0.136%, Co:0.1%, Cu:0.238%, La:0.086%, S≤0.015%, P≤0.02%, surplus is Fe.
The preparation technology of bearing outer ring includes: melting, cast, and austenitizing processes, quenching, tempering.
The temperature that austenitizing processes is 1032 DEG C, and the time that austenitizing processes is 2.6h.
Quenching concrete operations are as follows: after being processed by austenitizing, material water is cooled to 488 DEG C, the most air-cooled to 338 DEG C, then oil It is cooled to room temperature.
Temperature is 195 DEG C, and tempering time is 3.5h.
Embodiment 9
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.3%, Si:0.5%, B: 0.05%, V:0.16%, Mn:0.43%, Ni:0.3%, Zr:0.05%, Cr:4.3481%, Mo:0.12%, Co:0.12%, Cu:0.22%, La:0.1%, S≤0.015%, P≤0.02%, surplus is Fe.
Embodiment 10
A kind of self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.6%, Si:0.3%, B: 0.08%, V:0.12%, Mn:0.56%, Ni:0.23%, Zr:0.13%, Cr:4.2%, Mo:0.15%, Co:0.08%, Cu:0.26%, La:0.07%, S≤0.015%, P≤0.02%, surplus is Fe.
Embodiment 7-10 gained self-lubrication alloy high life 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 (7)

1. a self-lubrication alloy high life 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 outer ring includes by weight percentage: C:0.3～0.6%, Si:0.3～ 0.5%, B:0.05～0.08%, V:0.12～0.16%, Mn:0.43～0.56%, Ni:0.2～0.3%, Zr:0.05～ 0.13%, Cr:4.2～4.8%, Mo:0.12～0.15%, Co:0.08～0.12%, Cu:0.22～0.26%, La:0.07 ～0.1%, S≤0.015%, P≤0.02%, surplus is Fe.
Self-lubrication alloy high life bearing the most according to claim 1, it is characterised in that V element, Mn element, Zr element, Cr The content of element meets following relation: 100 × nCr=[100 × (nV+nMn+nZr-0.05)]2+ 4, wherein nV、nMn、nZr、nCrPoint Do not represent V element, Mn element, Zr element, Cr element shared percentage by weight in the component of bearing outer ring.
Self-lubrication alloy high life bearing the most according to claim 1 or claim 2, it is characterised in that Ni element, Mo element, Co unit Element, the content of La element meet following relation: 100 × nNi=100 × (nMo+nCo+nLa)-0.07, wherein nNi、nMo、nCo、nLa Represent Ni element, Mo element, Co element, La element shared percentage by weight in the component of bearing outer ring respectively.
4. according to self-lubrication alloy high life bearing described in any one of claim 1-3, it is characterised in that the preparation of bearing outer ring Technique includes: melting, cast, and austenitizing processes, quenching, tempering.
5. according to self-lubrication alloy high life bearing described in any one of claim 1-4, it is characterised in that austenitizing processes Temperature is 1020～1050 DEG C, and the time that austenitizing processes is 2～3h.
6. according to self-lubrication alloy high life bearing described in any one of claim 1-5, it is characterised in that quenching concrete operations are such as Under: after being processed by austenitizing, material water is cooled to 480～500 DEG C, the most air-cooled to 320～350 DEG C, then oil is cooled to room temperature.
7. according to self-lubrication alloy high life bearing described in any one of claim 1-6, it is characterised in that temperature is 180 ～220 DEG C, tempering time is 3～4h.
CN201610625331.3A 2016-08-01 2016-08-01 Self-lubrication alloy bearing with long life Pending CN106050936A (en)

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CN112322988A (en) * 2020-11-23 2021-02-05 浙江宝武钢铁有限公司 High-wear-resistance bearing steel electroslag ingot and processing technology thereof
CN112853200A (en) * 2019-11-26 2021-05-28 武汉昆伦特钢装备科技开发有限公司 High-hardness wear-resistant corrosion-resistant high-temperature-resistant alloy cast steel grinding sleeve and manufacturing process thereof

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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
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CN112322988A (en) * 2020-11-23 2021-02-05 浙江宝武钢铁有限公司 High-wear-resistance bearing steel electroslag ingot and processing technology thereof

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Application publication date: 20161026