CN105755398B - A kind of brake disc of high-speed train - Google Patents
A kind of brake disc of high-speed train Download PDFInfo
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- CN105755398B CN105755398B CN201410761648.0A CN201410761648A CN105755398B CN 105755398 B CN105755398 B CN 105755398B CN 201410761648 A CN201410761648 A CN 201410761648A CN 105755398 B CN105755398 B CN 105755398B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004411 aluminium Substances 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010936 titanium Substances 0.000 claims abstract description 14
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 239000011651 chromium Substances 0.000 claims abstract description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 12
- 239000010955 niobium Substances 0.000 claims abstract description 12
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 11
- 239000011733 molybdenum Substances 0.000 claims abstract description 11
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 11
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011572 manganese Substances 0.000 claims abstract description 10
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 10
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 9
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000010079 rubber tapping Methods 0.000 claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 239000011593 sulfur Substances 0.000 claims abstract description 6
- 238000000746 purification Methods 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910004339 Ti-Si Inorganic materials 0.000 claims description 4
- 229910010978 Ti—Si Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000009750 centrifugal casting Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 229910001122 Mischmetal Inorganic materials 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 229910000765 intermetallic Inorganic materials 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 21
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001208 Crucible steel Inorganic materials 0.000 abstract description 5
- 229910052786 argon Inorganic materials 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 239000005864 Sulphur Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- GFUGMBIZUXZOAF-UHFFFAOYSA-N niobium zirconium Chemical compound [Zr].[Nb] GFUGMBIZUXZOAF-UHFFFAOYSA-N 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
A kind of brake disc of high-speed train, each component and its mass percent of its 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 content 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 phosphorus, sulfur content sum 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, vacuum melting, insert aluminium deoxidation tapping, the compacted alterants of Re Ti Si are poured in steel ladle by pouring method in bag, using Argon purification technique removal of impurities in bag, so that brake disc of high-speed train possesses the coefficient of friction of enough intensity, height and stabilization, higher wearability and preferable heat resistanceheat resistant crack performance.
Description
Technical field
The present invention is a kind of brake disc of high-speed train.The component for being related to brake disc disk body material is constituted and preparation method.
Background technology
High with the severe damped condition of service condition in bullet train speed, huge braking thermic load and thermal shock are drawn
Very high thermograde is played, so as to bring very high thermal stress, therefore causes stress concentration phenomenon, cracks and extend.Together
When, surface of friction pair temperature is very high when braking at a high speed, can cause the deformation of disk body.Existing brake disc of high-speed train mistake under arms
The problems such as abrasion are serious, rim splits occurs in journey, train braking performance and security performance is directly influenced.While bullet train system
Moving plate relies primarily on import, and this situation has seriously constrained the raising of railway locomotive repair quality and service efficiency.
The content of the invention
The present invention makes it have higher mechanical property, resistance to by controlling Materials for High-speed Train Brake Discs component proportion
The combination properties such as thermal fatigue property, wear resistance and quick thermal conductivity, improve its military service performance, reach on the whole
Phosphorus, sulfur content≤0.010%, carbon content >=0.03%, brake disc room temperature tensile strength >=1100MPa, brake disc yield strength >=
1000MPa, Brinell hardness >=300HB, thermal conductivity factor >=40W/mK, coefficient of friction reaches 0.40, and the impact of brake disc normal temperature is tough
Property >=40J key index.
Materials for High-speed Train Brake Discs component and its mass percent of the present invention are as follows：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 content
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 phosphorus, sulfur content sum is less than or equal to 0.01%, iron surplus.
Because the fusing point of iron is high, its intensity, hardness, plasticity, high-temperature capability and inoxidizability can be various by adding
Element makes its alloying and adjusted.Shadow of the different elements to alloy property of the disc material addition is listed below
Ring.
1）Carbon (C)：Phosphorus content increase in steel, yield point and tensile strength rise, but plasticity and impact flexibility reduction.
2）Nickel (Ni)：Carbide is not formed, solution strengthening and the effect of raising quenching degree are medium；Fining ferrite grains,
In intensity under the same conditions, nickel can improve steel plasticity and toughness, particularly low-temperature flexibility；For main austenite former simultaneously
Improve the decay resistance of steel.It is used in combination with Cr, Mo etc., the heat resistance and normal temperature strength and corrosion resistance of steel can be improved.
3) tungsten (W)：Be add in carbide, steel appropriate tungsten can thinning microstructure crystal grain, improve intensity and
Toughness.Tungsten carbide fusing point is high, prevents crystal grain from growing up at high temperature, so as to improve the elevated temperature strength of material.
4) chromium (Cr)：Increase the quenching degree of steel and have post-curing effect, the intensity, hardness and wearability of steel can be improved,
But plasticity and toughness are reduced simultaneously.Chromium can also improve the elevated temperature strength of steel, be the important alloying element of heat resisting steel.
5) vanadium (V)：Vanadium is the excellent deoxidier of steel.Added in steel appropriate vanadium can thinning microstructure crystal grain, improve intensity and
Toughness.Vanadium and the carbide of carbon formation can improve the hydrogen attack resistance of steel at high temperature under high pressure.
6) molybdenum (Mo)：Molybdenum can make the crystal grain refinement of steel, improve quenching degree and red hardness energy, be kept enough in high temperature
Intensity and creep resisting ability.Molybdenum can also suppress steel alloy fragility caused by tempering.
7) titanium (Ti)：Titanium be add in carbide, steel appropriate titanium can notable thinning microstructure crystal grain, carry
High intensity and toughness are especially more obvious to improving impact flexibility contribution.
8）Zirconium (Zr)：Zircaloy plasticity is good, weldability, is used for welding processing.With deoxidation, denitrogenate, go
The effect of sulphur.And micro zirconium will greatly improve the hardness and intensity of alloy.
9）Niobium (Nb)：Niobium can improve the intensity of steel, toughness, high temperature oxidation resistance and corrosion resistance, reduction steel brittleness transformation
Temperature, the welding performance and processability obtained.In zirconium niobium system alloy, the addition of niobium reaches the crystalline substance of zirconium under temperature in use
During the solid solubility limit of body structure, the corrosion resistance of alloy is best.
10) manganese (Mn) aluminium (Al)：The addition of above-mentioned various elements reduces the coefficient of friction of material, and manganese, aluminium can be improved
The wearability of material.
Present invention also offers a kind of preparation method of above-mentioned brake disc of high-speed train, the preparation method is remelting process.
Brake disc of high-speed train of the present invention, its cast steel disk body material is prepared as follows：
1）Using vacuum melting.When molten steel reaches temperature, sampling detection ladle chemistry after composition is qualified, inserts aluminium
Deoxidation is tapped.
2）Using pouring method in bag the compacted alterants of Re-Ti-Si are poured in steel ladle during tapping, it is therefore an objective to deaerate, desulfurization
With other objectionable impurities of sucking-off, moreover it is possible to improve form and the distribution of field trash, improve the as-cast structure of steel, so as to improve the matter of steel
Amount.
3）Using Argon purification technique in bag, reduce the field trash and gas content in molten steel, improve the intensity of material with
Toughness, especially toughness improve more obvious.
4）Add one layer of Slag conglomeration agent during air blowing on molten steel surface, make molten steel surface one laminated slagging of formation, it is to avoid molten steel and sky
The direct catalytic oxidation of gas, reduces gas content in molten steel.
Further preferred scheme is that vacuum melting of the present invention, temperature is 1500 DEG C -2000 DEG C, and vacuum reaches
It it is 1630-1860 DEG C to more than 10Pa, pouring temperature.
Further preferred scheme is that deoxidation tapping of the present invention is using slotting aluminium deoxidation.
Further preferred scheme is, whole casting process of the present invention uses fusible pattern centrifugal casting, disposably into
Type.
The compacted alterants of Re-Ti-Si being related in above-mentioned preparation process refer to：RE is rare earth element general name symbol, and rare earth is made
For a kind of alterant, single rare earth is added（Addition 0.2-0.7%）Or mischmetal（Addition 0.7-1.2%）, titanium is due to it
High specific strength, high rigidity, high plasticity, low elastic modulus, the corrosion resistance being had, together with rare earth element, composition is new
Intermetallic compound, good modification effect can be obtained, alloy is obtained rotten tissue, make alloy structure finer
Change, improve the high-temperature behavior and heat endurance of alloy.
Brake disc of high-speed train of the present invention has advantages below and high-lighting effect：
1. enough intensity（Brake disc room temperature tensile strength >=1100MPa, brake disc yield strength >=1000MPa, braking
Disk impact toughness at room temperature >=40J）, to bear the pressure of brake lining when centrifugal force and the braking during rotation at a high speed；
2. high and stable coefficient of friction（More than 0.35 is issued in braking high temperature）, to obtain good braking effect；
3. higher wearability（Brinell hardness >=300HB）, to reduce what is produced between card and brake lining by strong friction
Abrasion；
4. preferable heat resistanceheat resistant crack performance, makes brake disc not cracked under sharp heat shock cool condition.
Embodiment：
The present embodiment of embodiment 1 provides a kind of Materials for High-speed Train Brake Discs preparation process：
1）The melting of cast steel disc material and purification bullet train cast steel disc material are prepared using remelting process, are used
Vacuum melting.Temperature is 1500 DEG C -2000 DEG C, and vacuum reaches more than 10Pa, when molten steel reaches 1760 ± 30 DEG C, sampling
Ladle chemistry is detected, after composition is qualified, aluminium deoxidation tapping is inserted.
2）Using pouring method in bag the compacted alterants of Re-Ti-Si are poured in steel ladle during tapping, it is therefore an objective to deaerate, desulfurization
With other objectionable impurities of sucking-off, moreover it is possible to improve form and the distribution of field trash, improve the as-cast structure of steel, so as to improve the matter of steel
Amount.
3）Using Argon purification technique in bag, reduce the field trash and gas content in molten steel, improve the intensity of material with
Toughness, especially toughness improve more obvious.
3）Add one layer of Slag conglomeration agent during air blowing on molten steel surface, make molten steel surface one laminated slagging of formation, it is to avoid molten steel and sky
The direct catalytic oxidation of gas, reduces gas content in molten steel.
4）Whole casting process uses fusible pattern centrifugal casting, disposal molding.
The material obtained by above-mentioned preparation process after testing, constituent content scope described in patent specification of the present invention it
Interior, wherein phosphorus content ＜ 0.010%, carbon content ＞ 0.03%, brake disc room temperature tensile strength ＞ 1200MPa, brake disc surrender are strong
＞ 1000MPa, Brinell hardness ＞ 340HB are spent, stable friction factor is in 0.35-0.45, brake disc impact toughness at room temperature >=40J,
Above-mentioned key technical index is reached, integrated performance index exceedes ironcasting and forged steel pieces brake disc performance indications, in the prior art
Similar brake disc technical parameter：Brake disc room temperature tensile strength is not higher than 1100MPa, and brake disc yield strength is not higher than
1000MPa, Brinell hardness is not higher than 280HB, and coefficient of friction 0.30, brake disc impact toughness at room temperature is not higher than 40J.
Embodiment 2：The Materials for High-speed Train Brake Discs of the present embodiment, its each component included and its mass percent are：
Carbon content 0.26%, silicone content 0.6%, manganese content 0.4%, W content 0.01%, content of vanadium 0.2%, molybdenum content 0.3%,
Nickel content 1.0%, chromium content 1.0%, Ti content 0.01%, aluminium content 0.02%, zirconium content 0.035%, content of niobium 0.045%, phosphorus, sulphur
Content sum is less than or equal to 0.01%；Iron surplus.
After testing, brake disc room temperature tensile strength:1210MPa, brake disc yield strength:1050MPa, Brinell hardness:
342HB, stable friction factor is in 0.35-0.40, brake disc impact toughness at room temperature:40J.
Embodiment 3：The Materials for High-speed Train Brake Discs of the present embodiment, its each component included and its mass percent are：
Carbon content 0.28%, silicone content 0.7%, manganese content 0.75%, W content 0.01%, content of vanadium 0.2%, molybdenum content 0.3%,
Nickel content 1.0%, chromium content 1.0%, Ti content 0.01%, aluminium content 0.032%, zirconium content 0.035%, content of niobium 0.045%, phosphorus,
Sulfur content sum is less than or equal to 0.01%；Iron surplus.
After testing, brake disc room temperature tensile strength:1210MPa, brake disc yield strength:1050MPa, Brinell hardness:
365HB, stable friction factor is in 0.38-0.40, brake disc impact toughness at room temperature:40J.
Embodiment 4：The Materials for High-speed Train Brake Discs of the present embodiment, its each component included and its mass percent are：
Carbon content 0.28%, silicone content 0.7%, manganese content 0.75%, W content 0.02%, content of vanadium 0.8%, molybdenum content 0.3%,
Nickel content 1.0%, chromium content 1.0%, Ti content 0.01%, aluminium content 0.03%, zirconium content 0.050%, content of niobium 0.050%, phosphorus, sulphur
Content sum is less than or equal to 0.01%；Iron surplus.
After testing, brake disc room temperature tensile strength:1350MPa, brake disc yield strength:1150MPa, Brinell hardness:
360HB, stable friction factor is in 0.40-0.45, brake disc impact toughness at room temperature:46J.
Embodiment 5：The Materials for High-speed Train Brake Discs of the present embodiment, its each component included and its mass percent are：
Carbon content 0.30%, silicone content 0.8%, manganese content 0.6%, W content 0.015%, content of vanadium 0.6%, molybdenum content 0.5%,
Nickel content 1.2%, chromium content 1.1%, Ti content 0.015%, aluminium content 0.028%, zirconium content 0.045%, content of niobium 0.050%, phosphorus,
Sulfur content sum is less than or equal to 0.01%；Iron surplus.
After testing, brake disc room temperature tensile strength:1300MPa, brake disc yield strength:1100MPa, Brinell hardness:
358HB, stable friction factor is in 0.38-0.43, brake disc impact toughness at room temperature:43J.
Embodiment 6：The Materials for High-speed Train Brake Discs of the present embodiment, its each component included and its mass percent are：
Carbon content 0.5%, silicone content 0.9%, manganese content 0.6%, W content 0.015%, content of vanadium 0.6%, molybdenum content 0.5%,
Nickel content 1.1%, chromium content 1.0%, Ti content 0.01%, aluminium content 0.03%, zirconium content 0.040%, content of niobium 0.045%, phosphorus, sulphur
Content sum is less than or equal to 0.01%；Iron surplus.
After testing, brake disc room temperature tensile strength:1320MPa, brake disc yield strength:1180MPa, Brinell hardness:
366HB, stable friction factor is in 0.38-0.43, brake disc impact toughness at room temperature:44J.
Claims (1)
1. a kind of preparation method of brake disc of high-speed train, it is characterised in that its each component included and its mass percent：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 content 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 phosphorus, sulfur content sum are less than or equal to 0.01%；
Iron surplus；
Preparation method comprises the following steps：
1）Using vacuum melting；When molten steel reaches temperature, sampling detection ladle chemistry after composition is qualified, inserts aluminium deoxidation
Tapping；Described vacuum melting, temperature is 1500 DEG C -2000 DEG C, and vacuum reaches more than 10Pa；Pouring temperature is 1630-
1860℃；
2）Using pouring method in bag the compacted alterants of Re-Ti-Si being poured in steel ladle during tapping, the compacted alterant refers to：RE
For rare earth element general name symbol, rare earth adds single rare earth or matter of the mass percent for 0.2-0.7% as a kind of alterant
The mischmetal that percentage is 0.7-1.2% is measured, titanium constitutes new intermetallic compound, obtain alloy together with rare earth element
Rotten tissue；
3）Using gon technics purification and impurity removal in bag, add one layer of Slag conglomeration agent during air blowing on molten steel surface, make molten steel surface formation one
Laminated slagging；
4）Casting, obtains brake disc of high-speed train, and casting process uses fusible pattern centrifugal casting, disposal molding.
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| CN201410761648.0A CN105755398B (en) | 2014-12-13 | 2014-12-13 | A kind of brake disc of high-speed train |
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| CN201410761648.0A CN105755398B (en) | 2014-12-13 | 2014-12-13 | A kind of brake disc of high-speed train |
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| CN105755398B true CN105755398B (en) | 2017-11-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107671228B (en) * | 2016-08-02 | 2019-06-07 | 中国科学院金属研究所 | A kind of casting technique of high-speed railway passenger rare earth alloy brake disc castings |
| CN107760983B (en) * | 2016-08-18 | 2019-03-01 | 江苏鼎泰工程材料有限公司 | A kind of production method of low-alloy super-strength steel and its casting |
| CN109500393B (en) * | 2017-09-15 | 2020-04-03 | 西南交通大学 | Laser additive manufacturing method for brake disc of high-speed train |
| CN107641696B (en) * | 2017-10-30 | 2020-01-14 | 马钢(集团)控股有限公司 | Heat treatment method of steel for cobalt-containing high-speed train brake disc |
| CN108048753A (en) * | 2017-12-20 | 2018-05-18 | 北京交通大学 | A kind of rail vehicle brake disc low-alloy steel and its heat treatment method |
| CN108842116A (en) * | 2018-06-15 | 2018-11-20 | 邯郸慧桥复合材料科技有限公司 | A kind of high-speed rail brake disc and its production method |
| CN109023095A (en) * | 2018-09-17 | 2018-12-18 | 安徽博耐克摩擦材料有限公司 | A kind of alloy steel material for brake disc |
| CN109136783A (en) * | 2018-09-17 | 2019-01-04 | 安徽博耐克摩擦材料有限公司 | A kind of alloy steel material for brake drum |
| CN111360198B (en) * | 2020-04-03 | 2021-05-07 | 北京机科国创轻量化科学研究院有限公司 | Cast steel for high-toughness cold-hot fatigue-resistant high-speed train brake disc and preparation method thereof |
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| CN102102165B (en) * | 2010-05-10 | 2012-07-11 | 北京建筑工程学院 | Alloy structural steel material for brake discs of high-speed motor train unit vehicles |
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Denomination of invention: A high-speed train brake disc Granted publication date: 20171107 Pledgee: Industrial and Commercial Bank of China Danyang Branch Pledgor: JIANGSU DINGTAI ENGINEERING MATERIAL CO.,LTD. Registration number: Y2024980002806 |