CN108048753A - A kind of rail vehicle brake disc low-alloy steel and its heat treatment method - Google Patents
A kind of rail vehicle brake disc low-alloy steel and its heat treatment method Download PDFInfo
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- 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
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
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- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- 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
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- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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Abstract
The present invention relates to a kind of rail vehicle brake disc low-alloy steel and its heat treatment method, chemical composition to be by weight percentage：Carbon：0.15 0.30%, silicon：0.4 1.0%, manganese：0.4 1.0%, chromium：0.6 1.4%, nickel：0.4 1.2%, molybdenum：0.2 0.6%, vanadium：0.15 0.4%, copper：0.15 0.35%, tungsten：0.1 0.3%, niobium：0.025 0.045%, zirconium：0.025 0.045%, remaining is iron and purifies remaining Re, Al and inevitable impurity.The characteristics of the present invention is based on rail vehicle steel brake disc in military service operating mode, environment and forming process, material composition design is carried out from improving the elevated temperature strength of material, increasing weatherability, crystal grain thinning, improvement plasticity etc., suitable forging ratio and quenching-and-tempering process are selected, the mechanical property of material at room temperature can be made to meet the material performance requirement of Forging Steel Brake Disc or cast steel brake disc respectively.For under different scales smelting condition, it is proposed that the different control methods to material purity, to improve the degree of purity of steel alloy.
Description
Technical field
It is specifically a kind of to be applicable in the present invention relates to a kind of rail vehicle brake disc low-alloy steel and its heat treatment method
In the steel that for example general fast car of rolling stock, motor train unit train and bullet train, lorry, urban rail transit vehicles etc. use
Matter disc material belongs to the technical field of metal material of track traffic.
Background technology
Foundation brake element of the brake disc as rail vehicle, passes through the strong friction between brake lining in braking process
Realize speed governing and the stopping brake of train.Brake disc rubbing surface in braking process bears power friction, causes brake disc surface
Temperature drastically raises, and subsequent train operation makes brake disc quick refrigeration again, thus brake disc surface is caused to bear cold cycling
And the effect of heat engine coupling, generate fretting wear and the problems such as surface hot spot, fire check.Therefore, the service safety of brake disc
The traffic safety of train is directly affected with reliability.For the military service operating mode of brake disc harshness, disc material must have good
Good mechanical behavior under high temperature and heat conductivility and higher wear-resisting property and thermal fatigue resistance energy.China railways total kilometrage
Be the whole world most, there is complicated railway line road network, the operation environment of rail vehicles is complicated, including dust storm, sleet, coastal
The corrosive environment in area etc..Complicated circuit operating mode proposes the corrosion resistance of disc material certain requirement.
At present, China railways rolling stock disc material is substantially external introduces.The braking of High Speed Train in China
Disk material is mainly ferrous material and steel based material, and steel system brake disc is divided into Forging Steel Brake Disc and cast steel brake disc.From casting and
Forging two kinds of processes influences brake disc quality angle consideration, and in same material, forged steel quality is good and steady
It is fixed, but have certain limitation to the complexity of brake disc structure；Cast Steels are not relatively fine and close, are also easy to produce casting flaw, cause
Fluctuation of product quality etc., but casting method can produce the brake disc of the labyrinth with radiating rib plate, can improve system
The radiating condition of Moving plate improves service life.Therefore, cast steel brake disc and Forging Steel Brake Disc are each advantageous.The smelting of steel can
It is divided into extensive smelting and Small-scale smelting, different smelting processes is also required to using different sublimate processing methods, to protect
Demonstrate,prove the degree of purity inside disc material.
Therefore, a kind of Novel brake disk material is researched and developed for track traffic development in China's is promoted to be of great significance.
Zhong Cheqi villas weir Co., Ltd of rolling stock technical study institute " for brake disc of high-speed train alloy cast steel and
In the brake disc of high-speed train manufactured by the alloy cast steel " (application number 201610235376.X), disclose a kind of at a high speed
The weight of the alloy cast steel of train brake disk and the brake disc of high-speed train manufactured by the alloy cast steel, component and its each component
Percentage composition is：Carbon 0.18~0.26%；Silicon 0.30~0.50%；Manganese 0.68~1.40%；Phosphorus≤0.025%；Sulphur≤
0.013%；Chromium 1.10~1.82%；Nickel 0.90~1.50%；Molybdenum 0.65~1.02%；Vanadium 0.22~0.34%；Other components
Content summation≤0.30%, wherein tungsten be less than 0.1%；Iron is surplus.The beneficial effects are mainly as follows：Pass through
The rational proportion of the main components such as carbon, silicon and heat treatment, make crystal grain in the alloying elements such as manganese, nickel, chromium, molybdenum, vanadium and cast steel material
Refinement improves the quenching degree and thermostrength of alloy cast steel material, and normal temperature strength and elevated temperature strength have by a relatively large margin
It improves, and with excellent comprehensive mechanical property.The brake disc manufactured with it is fully able to meet operating mode bullet train and uses skill
Art requirement.But in the patent, inventor and unbonded brake disc military service operating mode, Service Environment and shaping process etc. are multiple
Aspect carries out comprehensive design, does not provide the scheme of corresponding sublimate processing for smelting condition.
A kind of " brake disc of high-speed train " (application number of Jiangsu Dingtai Engineering Materials Co., Ltd.：201410761648.0)
In, disclose a kind of brake disc of high-speed train, each component and its mass percent of cast steel disk body material：Carbon content 0.25-
0.50%, silicone content 0.6-1.0%, manganese content 0.4-0.8%, W content 0.01-0.02%, content of vanadium 0.1-0.9%, molybdenum contain
Measure 0.3-0.7%, nickel content 1.0-1.5%, chromium content 0.9-1.2%, Ti content 0.01-0.02%, aluminium content 0.020-
0.035%, zirconium content 0.035-0.050%, content of niobium 0.045-0.060%, while the sum of phosphorus, sulfur content is less than or equal to
0.01%；Iron surplus.The brake disc of high-speed train cast steel disk body material is prepared using remelting process, and vacuum melting, slotting aluminium deoxidation goes out
Steel pours the compacted alterants of Re-Ti-Si by pouring method in bag in steel ladle, using Argon purification technique removal of impurities in bag, thus
Brake disc of high-speed train is made to possess enough intensity, high and stable coefficient of friction, higher wearability and preferable thermal crack resistant
Line performance.Equally, in the patent, inventor and unbonded brake disc military service operating mode, Service Environment and shaping process etc. are more
A aspect carries out comprehensive design, does not provide the scheme of corresponding sublimate processing for smelting condition.
The content of the invention
In prior art data, have no that inventor combines brake disc military service operating mode, Service Environment and shaping process etc.
Comprehensive consideration and design are carried out, the scheme of corresponding sublimate processing is not provided for smelting condition.
For defect in the prior art, the present invention is based on rail vehicle steel brake disc in military service operating mode, environment
The characteristics of in forming process, high temperature, the load working condition of cool-hot fatigue that including being on active service when bears repeatedly, when military service, are subject to air
The environmental characteristics such as the corrosion of environment, the shaping process such as casting, forging, carry out targetedly involved in part forming process
Element selects and collocation.Material is carried out from improving the elevated temperature strength of material, increasing weatherability, crystal grain thinning, improvement plasticity etc.
Expect composition design.For under different scales smelting condition, it is proposed that the control method of material purity：It is extensive to smelt：It can
Using electric arc furnace smelting, vacuum refining processing or electroslag remelting, to improve the degree of purity of steel；Using the small rule of medium-frequency induction furnace
Mould is smelted：Mn precipitation desoxydations, Si diffusive deoxidations, Al precipitation desoxydations, Re purifications can be used.
To achieve the above objectives, the present invention adopts the technical scheme that：
A kind of rail vehicle brake disc low-alloy steel, chemical composition are by weight percentage：Carbon (C)：0.15-
0.30%, silicon (Si)：0.4-1.0%, manganese (Mn)：0.4-1.0%, chromium (Cr)：0.6-1.4%, nickel (Ni)：0.4-1.2%, molybdenum
(Mo)：0.2-0.6%, vanadium (V)：0.15-0.4%, copper (Cu)：0.15-0.35%, tungsten (W)：0.1-0.3%, niobium (Nb)：
0.025-0.045%, zirconium (Zr)：0.025-0.045%, remaining is iron and purifies remaining Re, Al and inevitable impurity.
On the basis of said program, inevitable impurity is related to smelting scale and technique in the steel alloy,
Electric arc furnace smelting, vacuum refining processing or electroslag remelting can be used in extensive smelt, and to improve the degree of purity of steel alloy, impurity contains
Amount is by weight percentage：Phosphorus：＜ 0.015%, sulphur：＜ 0.010%；Medium-frequency induction furnace, impurity can be used in Small-scale smelting
Content is by weight percentage：Phosphorus：＜ 0.03%, sulphur：＜ 0.03%.
The heat treatment method of above-mentioned steel alloy uses normalized treatment+quenching-and-tempering process, comprises the following steps：
(1) normalized treatment：By material warms to 870 DEG C~980 DEG C, heat preservation 3~5 it is small when after be air-cooled to room temperature；
(2) Tempering and Quenching：Including carrying out quenching treatment and temper successively, the quenching treatment is will be by normalizing
Treated material is warming up in electric furnace, gas furnace or inert gas shielding heating furnace 870 DEG C~980 DEG C, heat preservation 2~
5 it is small when after, immerse in quenching oil or oil groove with self- poking arrangement and carry out oil quenching；The temper is will to quench through oil cooling
Fire processing material be warming up in electric furnace, gas furnace or inert gas shielding heating furnace 580~680 DEG C, heat preservation 3.5~
5 it is small when after be air-cooled to room temperature.
Above-mentioned steel alloy can be used for production cast steel brake disc or Forging Steel Brake Disc, in different forging ratio and Tempering and Quenching
Under technique, which can show the optimization and improvement of different mechanical performances, especially plasticity.
Material composition designed by the present invention is targetedly to carry out polynary conjunction with reference to the military service performance characteristics of brake disc
The design of aurification.
Carbon (C) is the element for ensureing steel invigoration effect.With the increase of phosphorus content, yield point and tensile strength rise, but
Plasticity and impact reduce.Low-carbon can improve toughness and processing performance.To ensure that brake disc intensity and toughness have good matching,
Phosphorus content is controlled as 0.15-0.30% in the steel alloy of the present invention.
Silicon (Si) is in steelmaking process plus silicon is as reducing agent and deoxidier.When silicon is added in the form of alloying element in steel,
The elastic limit of steel, yield point and tensile strength can be significantly improved.The combinations such as silicon and molybdenum, tungsten, chromium are improved corrosion resistance and resist
The effect of oxidation.Silicone content is set to 0.4-1.0% by the present invention.
Manganese (Mn) is good deoxidier and desulfurizing agent in steelmaking process, and a certain amount of manganese is added in steel and is made it have
Enough toughness, higher intensity and hardness, while the quenching degree of steel can be improved, improve the hot-working character of steel.If manganese amount
Increase, weaken the resistance to corrosion of steel, reduce welding performance.Therefore, manganese content is set to 0.4-1.0% by the present invention.
Chromium (Cr) can improve the toughness of steel, improve quenching degree, intensity, hardness and wearability, oxidation resistance, reduce thermal conductivity
Rate significantly improves brittle transition temperature.Chromium content is set to 0.6-1.4% by the present invention.
Nickel (Ni) can improve the intensity and toughness of steel simultaneously；Improve cryogenic property, improve fatigue resistance；When having Ni, it can fit
When carbon drop, improve plasticity and toughness energy；It is strong to reduce thermal conductivity.In view of nickel it is more rare resource and somewhat expensive, therefore the present invention will
Nickel content is set to 0.4-1.2%.
Molybdenum (Mo) molybdenum can make the crystal grain refinement of steel, improve quenching degree and thermostrength, keep enough intensity at high temperature
It (is stressed, deforms at high temperature for a long time, claim creep) with creep resisting ability.Molybdenum is added in structural steel, machinery can be improved
Performance.It can also inhibit steel alloy brittleness caused by tempering.Therefore molybdenum content is set to 0.2-0.6% by the present invention.
Vanadium (V) is the excellent deoxidier of steel.Vanadium can thinning microstructure crystal grain, raising intensity and toughness in steel.Vanadium is formed with carbon
Carbide, anti-oxidant and corrosive power can be improved at high temperature under high pressure.Disc material heat-resistant anti-fatigue energy can also be significantly improved
Power, V are used cooperatively with other elements, can significantly improve the flow ability of material at high temperature, convenient for forging and molding.The present invention
Content of vanadium is set to 0.15-0.4%.
Copper (Cu) can improve intensity and toughness, particularly weatherability, i.e. atmospheric corrosion resistance.Refine pearlite type group
It knits, plays the effect for improving intensity.But easily generate in hot-working hot-short during too high levels, copper content is more than 0.5% plasticity
It significantly reduces.The alternative part of nickel of copper improves yield tensile ratio, fatigue strength and room temperature impact toughness.Copper content is set to by the present invention
0.15-0.35%.
Tungsten (W) fusing point is high, is valuable alloying element than great.Tungsten and carbon form tungsten carbide, there is very high hardness and resistance to
Mill property.The elevated temperature strength of steel can be increased.With reference to the military service operating mode of brake disc high temperature, cool-hot fatigue, targetedly it is with the addition of
Improve material at high temperature intensity, the alloying element W of hardness, and be used cooperatively with Mo, which closes better than simple
Aurification effect.W content is set to 0.1-0.3% by the present invention.
Niobium (Nb) plays an important role of crystal grain thinning and dispersion-strengtherning, is to improve the maximally efficient microalloy element of steel obdurability
One of.The quenching degree of steel can be improved.Content of niobium is set to 0.025-0.045% by the present invention.
Zirconium (Zr) improves low-temperature flexibility, welding performance and temper brittleness, can significantly mitigate cracking tendency with Cu cooperations.This hair
It is bright that zirconium content is set to 0.025-0.045%.
The micro alloying elements such as Nb, Zr can play the role of refined cast structure's crystal grain, for works such as subsequent forging, heat treatments
Sequence provides the basis of further crystal grain thinning.
Rare earth (Re)：Rare earth element refers to 15 lanthanide series that period of element atom ordinal number is 57-71.These yuan
Element is all metal, but their oxide is like " soil ", so traditionally claiming rare earth.Molten steel is carried out using the alloy containing rare earth
Purification, introducing portion rare earth, thus it is possible to vary composition, form, distribution and the property of steel inclusion, so as to improve the various of steel
Performance, such as toughness, weldability.Rare earth is added in steel, can also improve wearability.
Aluminium (Al) is common deoxidier in steel.A small amount of aluminium is added in steel, can crystal grain thinning, improve impact flexibility.Aluminium
Also there is inoxidizability and corrosion resistance, aluminium is shared with chromium, silicon, is remarkably improved the high temperature non-scale performance and high temperature resistant of steel
The ability of corrosion.
Advantageous effect：
Technical problem solved by the invention is to provide a kind of rail vehicle brake disc novel alloy Steel material, select
Suitable forging ratio and quenching-and-tempering process, can make the mechanical property of material at room temperature meet Forging Steel Brake Disc or cast steel respectively
The material performance requirement of brake disc.
Suitable forging ratio and quenching-and-tempering process are selected, the mechanical property of material at room temperature can be made to reach forged steel braking
Disk material performance requirement：Tensile strength ＞ 890MPa, yield strength ＞ 740MPa, elongation percentage >=15%, impact absorbing energy KU2≥
40J, hardness HBW ＞ 280.
Suitable quenching-and-tempering process is selected, the mechanical property of material at room temperature can be made to reach cast steel disc material
It can requirement：Tensile strength ＞ 1050MPa, yield strength ＞ 900MPa, elongation percentage >=8%, impact absorbing energy KV2>=30J, hardness
HBW ＞ 290.
Specific embodiment
The present invention is described in further detail below.
A kind of rail vehicle brake disc low-alloy steel, chemical composition are by weight percentage：Carbon (C)：0.15-
0.30%, silicon (Si)：0.4-1.0%, manganese (Mn)：0.4-1.0%, chromium (Cr)：0.6-1.4%, nickel (Ni)：0.4-1.2%, molybdenum
(Mo)：0.2-0.6%, vanadium (V)：0.15-0.4%, copper (Cu)：0.15-0.35%, tungsten (W)：0.1-0.3%, niobium (Nb)：
0.025-0.045%, zirconium (Zr)：0.025-0.045%, remaining is iron and purifies remaining Re, Al and inevitable impurity.
On the basis of said program, the inevitable impurity of the steel alloy is related to smelting scale and technique, greatly
Electric arc furnace smelting, vacuum refining processing or electroslag remelting can be used in scale smelting, to improve the degree of purity of steel alloy, impurity content
By weight percentage：Phosphorus：＜ 0.015%, sulphur：＜ 0.010%；Medium-frequency induction furnace can be used in Small-scale smelting, and impurity contains
Amount is by weight percentage：Phosphorus：＜ 0.03%, sulphur：＜ 0.03%.
The heat treatment method of above-mentioned steel alloy uses normalized treatment+quenching-and-tempering process, comprises the following steps：
(1) normalized treatment：By material warms to 870 DEG C~980 DEG C, heat preservation 3~5 it is small when after be air-cooled to room temperature；
(2) Tempering and Quenching：Including carrying out quenching treatment and temper successively, the quenching treatment is will be by normalizing
Treated material is warming up in electric furnace, gas furnace or inert gas shielding heating furnace 870 DEG C~980 DEG C, heat preservation 2~
5 it is small when after, immerse in quenching oil or oil groove with self- poking arrangement and carry out oil quenching；The temper is will to quench through oil cooling
Fire processing material be warming up in electric furnace, gas furnace or inert gas shielding heating furnace 580~680 DEG C, heat preservation 3.5~
5 it is small when after be air-cooled to room temperature.
Above-mentioned steel alloy can be used for production cast steel brake disc or Forging Steel Brake Disc, in different forging ratio and Tempering and Quenching
Under technique, which can show the optimization and improvement of different mechanical performances, especially plasticity.
Difference can be used under different batch demands in rail vehicle brake disc of the present invention novel alloy Steel material
Smelting process, with reference to the specific embodiment of different forging ratio and quenching-and-tempering process, illustrate that material can with specific example
The performance shown.
First, after using high-volume, electric arc furnace smelting, refining by electro-slag remelting, impurity content by weight percentage may be used
Reach：P≤0.007, S≤0.006.After different quenching-and-tempering process processing, the mechanical property of material at room temperature can
Meet the performance requirement of Forging Steel Brake Disc and cast steel brake disc respectively, it is specific as follows：
(1) forged than 4.0 forgings, after 870 DEG C of quenchings, 660 DEG C of tempering, the mechanical property of material at room temperature can expire
The performance requirement of sufficient Forging Steel Brake Disc.Tensile strength：965MPa, yield strength：900MPa, elongation percentage：19%, impact absorbing energy
KU2：94J, hardness HBW：292；
(2) after 910 DEG C of quenchings, 600 DEG C of tempering, the mechanical property of material at room temperature can meet the property of cast steel brake disc
It can requirement.Tensile strength：1250MPa, yield strength：1165MPa, elongation percentage：13.5%, impact absorbing energy KV2：95J, hardness
HBW：363.
2nd, using small lot, medium-frequency induction furnace smelt when, impurity content by weight percentage, P=0.014,
S=0.016 is forged through different forgings ratio, and the mechanical property of material at room temperature is as follows after Tempering and Quenching：
(1) when forging ratio is 1.5~2.0, tensile strength：895~998MPa, yield strength：835~938MPa, extension
Rate：15~17%, impact absorbing energy KU2：48~75J, hardness HBW：283~311；
(2) when forging ratio is 3.0, tensile strength ＞ 1035MPa, yield strength ＞ 998MPa, elongation percentage >=17%, impact
Absorb work(KU2：49~95J, hardness HBW：285~316；
The content not being described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. a kind of rail vehicle brake disc low-alloy steel, it is characterised in that：Its chemical composition is by weight percentage：Carbon：
0.15-0.30%, silicon：0.4-1.0%, manganese：0.4-1.0%, chromium：0.6-1.4%, nickel：0.4-1.2%, molybdenum：0.2-0.6%,
Vanadium：0.15-0.4%, copper：0.15-0.35%, tungsten：0.1-0.3%, niobium：0.025-0.045%, zirconium：0.025-0.045%,
Remaining is iron and purifies remaining Re, Al and inevitable impurity.
2. rail vehicle brake disc low-alloy steel as described in claim 1, it is characterised in that：It can not in the steel alloy
The impurity avoided is related to smelting scale and technique, extensive to smelt using electric arc furnace smelting, vacuum refining processing or electroslag weight
Molten, to improve the degree of purity of steel alloy, impurity content is by weight percentage：Phosphorus：＜ 0.015%, sulphur：＜ 0.010%；Small rule
Mould is smelted using medium-frequency induction furnace, and impurity content is by weight percentage：Phosphorus：＜ 0.03%, sulphur：＜ 0.03%.
3. the heat treatment method of the rail vehicle brake disc low-alloy steel as described in claim 1-2 any claims, is adopted
With normalized treatment+quenching-and-tempering process, it is characterised in that：Comprise the following steps：
(1) normalized treatment：By material warms to 870 DEG C~980 DEG C, heat preservation 3~5 it is small when after be air-cooled to room temperature；
(2) Tempering and Quenching：Including carrying out quenching treatment and temper successively, the quenching treatment is will be by normalized treatment
Material afterwards be warming up in electric furnace, gas furnace or inert gas shielding heating furnace 870 DEG C~980 DEG C, heat preservation it is 2~5 small
Shi Hou immerses in quenching oil or oil groove with self- poking arrangement and carries out oil quenching；The temper is will be through oil quenchinng
The material of processing is warming up to 580~680 DEG C, heat preservation 3.5~5 in electric furnace, gas furnace or inert gas shielding heating furnace
Room temperature is air-cooled to after hour.
4. a kind of braking that rail vehicle brake disc as described in claim 1-2 any claims is produced with low-alloy steel
Disk.
5. brake disc as claimed in claim 4, it is characterised in that：The brake disc includes cast steel brake disc and forged steel is braked
Disk.
6. brake disc as claimed in claim 5, it is characterised in that：By selecting suitable forging ratio and Tempering and Quenching work
Skill, the mechanical property of alloy steel material at room temperature meet the material performance requirement of Forging Steel Brake Disc or cast steel brake disc respectively.
7. brake disc as claimed in claim 6, it is characterised in that：The Forging Steel Brake Disc material performance requirement：Tensile strength
＞ 890MPa, yield strength ＞ 740MPa, elongation percentage >=15%, impact absorbing energy KU2>=40J, hardness HBW ＞ 280.
8. brake disc as claimed in claim 6, it is characterised in that：The cast steel disc material performance requirement：Tensile strength
＞ 1050MPa, yield strength ＞ 900MPa, elongation percentage >=8%, impact absorbing energy KV2>=30J, hardness HBW ＞ 290.
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| CN202011054201.1A CN112281080A (en) | 2017-12-20 | 2017-12-20 | Low alloy steel for railway vehicle brake disc and heat treatment method thereof |
| CN201711380824.6A CN108048753A (en) | 2017-12-20 | 2017-12-20 | A kind of rail vehicle brake disc low-alloy steel and its heat treatment method |
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| CN201711380824.6A CN108048753A (en) | 2017-12-20 | 2017-12-20 | A kind of rail vehicle brake disc low-alloy steel and its heat treatment method |
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| CN202011054201.1A Division CN112281080A (en) | 2017-12-20 | 2017-12-20 | Low alloy steel for railway vehicle brake disc and heat treatment method thereof |
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| CN201711380824.6A Pending CN108048753A (en) | 2017-12-20 | 2017-12-20 | A kind of rail vehicle brake disc low-alloy steel and its heat treatment method |
| CN202011054201.1A Pending CN112281080A (en) | 2017-12-20 | 2017-12-20 | Low alloy steel for railway vehicle brake disc and heat treatment method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105755398A (en) * | 2014-12-13 | 2016-07-13 | 江苏鼎泰工程材料有限公司 | High-speed train brake disc |
| CN106967929A (en) * | 2017-03-28 | 2017-07-21 | 马钢(集团)控股有限公司 | A kind of EMUs brake disc forging mild steel and its heat treatment method |
| CN107177797A (en) * | 2017-04-24 | 2017-09-19 | 江阴兴澄特种钢铁有限公司 | The oil gas field anti-corrosion drilling tool steel of 130KSI, 135KSI rank and its manufacture method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008291322A (en) * | 2007-05-25 | 2008-12-04 | Jfe Steel Kk | Steel pipe for oil well having excellent pipe expandability and its manufacturing method |
| CN102400061A (en) * | 2011-10-20 | 2012-04-04 | 北京天宜上佳新材料有限公司 | Alloy steel material for brake disc of rapid train |
| CN107058883B (en) * | 2017-05-05 | 2018-05-08 | 山东昊安金科新材料股份有限公司 | A kind of brake disc of high-speed train alloy steel material and preparation method thereof |
-
2017
- 2017-12-20 CN CN201711380824.6A patent/CN108048753A/en active Pending
- 2017-12-20 CN CN202011054201.1A patent/CN112281080A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105755398A (en) * | 2014-12-13 | 2016-07-13 | 江苏鼎泰工程材料有限公司 | High-speed train brake disc |
| CN106967929A (en) * | 2017-03-28 | 2017-07-21 | 马钢(集团)控股有限公司 | A kind of EMUs brake disc forging mild steel and its heat treatment method |
| CN107177797A (en) * | 2017-04-24 | 2017-09-19 | 江阴兴澄特种钢铁有限公司 | The oil gas field anti-corrosion drilling tool steel of 130KSI, 135KSI rank and its manufacture method |
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| CN110016619A (en) * | 2019-05-28 | 2019-07-16 | 营口市特殊钢锻造有限责任公司 | A kind of mining High Strength Wear-Resistance Material and preparation method thereof |
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