CN108716516B - Arc-shaped radiating strip alloy steel brake disc and manufacturing method thereof - Google Patents
Arc-shaped radiating strip alloy steel brake disc and manufacturing method thereof Download PDFInfo
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- CN108716516B CN108716516B CN201810463590.XA CN201810463590A CN108716516B CN 108716516 B CN108716516 B CN 108716516B CN 201810463590 A CN201810463590 A CN 201810463590A CN 108716516 B CN108716516 B CN 108716516B
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- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 35
- 238000001816 cooling Methods 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 21
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 40
- 150000002910 rare earth metals Chemical class 0.000 claims description 40
- 238000012360 testing method Methods 0.000 claims description 37
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 31
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000005496 tempering Methods 0.000 claims description 22
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 20
- 238000003723 Smelting Methods 0.000 claims description 20
- 239000011572 manganese Substances 0.000 claims description 20
- 238000005070 sampling Methods 0.000 claims description 20
- 238000010183 spectrum analysis Methods 0.000 claims description 20
- 238000010791 quenching Methods 0.000 claims description 18
- 230000000171 quenching effect Effects 0.000 claims description 18
- 229910052763 palladium Inorganic materials 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910001309 Ferromolybdenum Inorganic materials 0.000 claims description 10
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 10
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 10
- OOJQNBIDYDPHHE-UHFFFAOYSA-N barium silicon Chemical compound [Si].[Ba] OOJQNBIDYDPHHE-UHFFFAOYSA-N 0.000 claims description 10
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims description 10
- 230000001914 calming effect Effects 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 10
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 10
- 239000004615 ingredient Substances 0.000 claims description 10
- 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 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 238000007670 refining Methods 0.000 claims description 10
- 238000010079 rubber tapping Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 10
- 229910001200 Ferrotitanium Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 86
- 230000000052 comparative effect Effects 0.000 description 33
- 238000009434 installation Methods 0.000 description 23
- 230000003247 decreasing effect Effects 0.000 description 14
- 238000013461 design Methods 0.000 description 13
- 230000007423 decrease Effects 0.000 description 11
- 239000010936 titanium Substances 0.000 description 10
- 238000004321 preservation Methods 0.000 description 9
- 238000002679 ablation Methods 0.000 description 6
- 238000011056 performance test Methods 0.000 description 6
- 208000021760 high fever Diseases 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Classifications
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/027—Compositions based on metals or inorganic oxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D65/84—Features relating to cooling for disc brakes
- F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0008—Ferro
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0026—Non-ferro
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0052—Carbon
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0007—Casting
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0038—Surface treatment
- F16D2250/0053—Hardening
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Braking Arrangements (AREA)
Abstract
The utility model provides an arc cooling panel alloy steel brake disc and preparation method thereof, relates to concentrated power brake disc and makes technical field, including the disk body, the one side of disk body is smooth, and the curved cooling panel of the predetermined quantity is arranged to the another side, its characterized in that, disk body material chemical composition and each composition weight percent are as follows: 0.20-0.25% of C, 0.40-0.60% of Si, 0.8-1.0% of Mn, 0.4-0.7% of Cr, 0.5-0.6% of Ni, 0.4-0.6% of Mo, 0.2-0.4% of Zr, 0.3-0.5% of Ti, 0.1-0.3% of Pd, 0.4-0.5% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe.
Description
Technical Field
The invention relates to the technical field of manufacturing of concentrated power brake discs, in particular to an arc-shaped radiating strip alloy steel brake disc and a manufacturing method thereof.
Background
The brake disc is an important component of the brake device of the concentrated power motor train unit. With the continuous increase of train speed, the braking load is higher and higher, and the requirement on a brake disc is higher and higher. The advantages and disadvantages of the braking system directly influence the safety and comfort of the motor train unit and the light weight and maintenance amount of parts, and the brake disc is one of parts with high technical content in the braking system and is also the key point for carrying out localization and independent innovation. The principle of friction braking determines that a brake disc can generate high temperature, abrasion and even cracks in the braking process of a train, and a new brake disc needs to be replaced when the abrasion or the cracks reach a certain degree, so that the brake disc needs to have abrasion resistance, heat crack resistance, fatigue resistance and the like, the common brake disc is often difficult to meet the requirements of a concentrated power motor train unit, and the technology and process for producing and applying the brake disc to the concentrated power motor train unit are relatively lacked in China.
Disclosure of Invention
In order to solve the technical problems, the invention provides an arc-shaped cooling plate strip alloy steel brake disc and a manufacturing method thereof, and the brake disc which meets the requirements of wear resistance, heat resistance and fatigue resistance of a centralized power motor train unit can be produced.
The invention is realized by the following technical scheme:
the utility model provides an arc cooling panel alloy steel brake disc, includes the disk body, and the one side of disk body is smooth, and the curved cooling panel of the predetermined quantity has been arranged to the another side, its characterized in that, disk body material chemical composition and each composition weight percentage are as follows: 0.20 to 0.25 percent of C, 0.40 to 0.60 percent of Si, 0.8 to 1.0 percent of Mn, 0.4 to 0.7 percent of Cr, 0.5 to 0.6 percent of Ni, 0.4 to 0.6 percent of Mo, 0.2 to 0.4 percent of Zr, 0.3 to 0.5 percent of Ti, 0.1 to 0.3 percent of Pd, 0.4 to 0.5 percent of RE, not more than 0.013 percent of P, not more than 0.012 percent of S and the balance of Fe.
In another aspect of the invention, the cross section of the radiating strip is a parallelogram, and the connecting line of the central points of the parallelogram is an arc line which is distributed along the radial direction of the disc body.
In another aspect of the invention, the middle of the tray body is provided with holes, the heat dissipation plate strips are circumferentially arranged on the tray surface of the tray body by taking the center of the tray body as the center of a circle, the heat dissipation plate strips comprise adjacent heat dissipation plate strips I and heat dissipation plate strips II, the heights of the heat dissipation plate strips are increased from the heat dissipation plate strips I to the heat dissipation plate strips II along the clockwise or anticlockwise direction in an equidifferent manner, one surface of the tray body, on which the heat dissipation plate strips are arranged, is also provided with at least 3 equal-height installation bosses, the heights of the installation bosses are greater than the heights of the heat dissipation plate.
In another aspect of the present invention, the height difference between the adjacent heat dissipating slats is 1mm in addition to the height difference between the heat dissipating slats i and ii.
In another aspect of the present invention, the pitch between the adjacent heat dissipating fins decreases in the direction in which the height of the heat dissipating fins decreases, based on the pitch between the heat dissipating fins i and the heat dissipating fins ii.
In another aspect of the present invention, the heat radiating fins are inclined to one side in a direction in which the height of the heat radiating fins decreases.
A manufacturing method of an arc-shaped radiating strip alloy steel brake disc is characterized by comprising the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
In another aspect of the present invention, the step 2 comprises the steps of:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, ferrotitanium, zirconium powder and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, adding calcium silicon for pre-deoxidation, and adding electrolytic manganese, crystalline silicon and 0.08-0.12% of rare earth ferrosilicon after melting;
d, adding 0.08-0.12% of pure rare earth by weight, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
g, adding 0.1-0.2% of pure rare earth by weight, and sampling and analyzing;
step H, adding 0.1-0.2 wt% of pure rare earth, refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
In another aspect of the present invention, the step 4 comprises:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 500-550 ℃, and preserving heat for 1-2 hours;
step II, heating the temperature in the normalizing furnace to 900-;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900-;
and IV, placing the brake disc in a tempering furnace at the temperature of 500-550 ℃, preserving the heat for 180 minutes, taking out and air-cooling to room temperature.
And V, placing the brake disc in a tempering furnace at the temperature of 450-500 ℃, preserving the heat for 90 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
The invention has the beneficial effects that: the arc-shaped heat dissipation lath alloy steel brake disc can be well applied to a centralized power motor train unit, the requirements on wear resistance, heat resistance and fatigue resistance can be met, the manufacturing process is not complex, and the arc-shaped heat dissipation lath alloy steel brake disc can be popularized and used.
Description of the drawings:
fig. 1 is a schematic view of the structure and distribution of the heat dissipating lath of the present invention.
In the drawings: 1. disk body, 2, heat dissipation lath, 201, heat dissipation lath I, 202, heat dissipation lath II, 3, installation boss, 4, mounting hole.
The specific implementation mode is as follows:
the following describes the embodiments of the present invention with reference to the drawings and examples:
example 1:
the utility model provides an arc cooling panel alloy steel brake disc, includes disk body 1, the one side of disk body 1 is smooth, and 40 curved cooling panel 2 of another side arranged, cooling panel 2 and 1 integrated into one piece of disk body, 1 material chemical composition of disk body and each composition weight percent are as follows: 0.20% of C, 0.40% of Si, 0.8% of Mn, 0.4% of Cr, 0.5% of Ni, 0.4% of Mo, 0.2% of Zr, 0.3% of Ti, 0.1% of Pd, 0.4% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe. The cross section of the radiating strip 2 is a parallelogram, the connecting line of the central point of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body 1. The improved heat dissipation plate is characterized in that a hole is formed in the middle of the plate body 1, the heat dissipation plate strips 2 are circumferentially arranged in the plate surface of the plate body 1 by taking the circle center of the plate body 1 as the circle center, the heat dissipation plate strips 2 comprise adjacent heat dissipation plate strips I201 and heat dissipation plate strips II 202, the heights of the heat dissipation plate strips 2 are increased in an equidifferent mode from the heat dissipation plate strips I201 to the heat dissipation plate strips II 202 in the clockwise direction, 3 equal-height installation bosses 3 are further arranged on one surface, provided with the heat dissipation plate strips 2, of the plate body 1, the heights of the installation bosses 3 are larger than the heights of. The mounting bosses 3 and the tray body 1 are integrally formed and evenly distributed on the tray surface of the tray body 1. The height difference between the adjacent radiating fins 2 is 1mm except for the height difference between the radiating fin i 201 and the radiating fin ii 202. The distance between the adjacent radiating fins 2 is gradually decreased along the direction of decreasing the height of the radiating fins 2 by taking the distance between the radiating fins i 201 and the radiating fins ii 202 as a reference. The radiating fins 2 are inclined to one side of the direction in which the height of the radiating fins 2 decreases.
The manufacturing method of the arc-shaped radiating strip alloy steel brake disc comprises the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
The step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, ferrotitanium, zirconium powder and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, pre-deoxidizing the added calcium silicon, and adding electrolytic manganese, crystalline silicon and 0.08% of rare earth ferrosilicon after melting;
d, adding 0.08 weight percent of pure rare earth, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
step G, adding 0.1 weight percent of pure rare earth, sampling and analyzing;
step H, adding 0.1 weight percent of pure rare earth for refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
The step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 500 ℃, and preserving heat for 1.5 hours;
step II, heating the temperature in the normalizing furnace to 900 ℃, and preserving the heat for 2 hours;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900 ℃ for heat preservation for 30 minutes and then quenching;
and IV, placing the brake disc in a tempering furnace at the temperature of 500 ℃, preserving the heat for 180 minutes, taking out, and air-cooling to room temperature.
And step V, placing the brake disc in a tempering furnace at the temperature of 450 ℃, preserving the heat for 90 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
The brake disc in this embodiment passes through mounting hole 4 on the installation boss 3 and installs on the wheel left side, radiator plate strip 2 establishes to the arc, highly increase progressively, to one side slope and the design that the interval is progressively changed make the air volume greatly increased between each radiator plate strip, make the heat that friction braking produced can disperse more fast, the high fever that the friction produced has significantly reduced the ablation to brake disc friction surface, the hot creep and the hot fatigue damage of brake disc have effectively been reduced, the performance of brake disc has been improved, the life of brake disc has been prolonged.
The following are the performance test results for the brake disc of this example at a test temperature of 20 ℃:
| sample number | Rm(Mpa) | RP0.2(Mpa) | A% | Z% | HBW | kv2/J | Metallographic phase |
| 1 | 1130 | 1050 | 14 | 45 | 350 | 80 | |
| 2 | 1170 | 1080 | 13 | 42 | 361 | 76 | |
| 3 | 1140 | 1060 | 13.5 | 43 | 352 | 78 | |
| 4 | 1190 | 1086 | 12 | 41 | 364 | 72 | S loop |
The following are the test results of the temperature of the brake disc at different test speeds in the 1:1 braking power test:
the brake disc produced by the production process, the element proportion and the structure in the embodiment can completely meet the use requirement of the concentrated power motor train unit, the wear resistance, the heat resistance and the fatigue resistance meet the requirements, the heat dissipation performance is good, the manufacturing process is not complex, and the service life is long.
Example 2:
the utility model provides an arc cooling panel alloy steel brake disc, includes disk body 1, the one side of disk body 1 is smooth, and 40 curved cooling panel 2 of another side arranged, cooling panel 2 and 1 integrated into one piece of disk body, 1 material chemical composition of disk body and each composition weight percent are as follows: 0.20% of C, 0.40% of Si, 0.8% of Mn, 0.4% of Cr, 0.5% of Ni, 0.4% of Mo, 0.2% of Zr, 0.3% of Ti, 0.1% of Pd, 0.4% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe. The cross section of the radiating strip 2 is a parallelogram, the connecting line of the central point of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body 1. The improved heat dissipation plate is characterized in that a hole is formed in the middle of the plate body 1, the heat dissipation plate strips 2 are circumferentially arranged in the plate surface of the plate body 1 by taking the circle center of the plate body 1 as the circle center, the heat dissipation plate strips 2 comprise adjacent heat dissipation plate strips I201 and heat dissipation plate strips II 202, the heights of the heat dissipation plate strips 2 are increased in an equidifferent mode from the heat dissipation plate strips I201 to the heat dissipation plate strips II 202 along the anticlockwise direction, 3 equal-height installation bosses 3 are further arranged on one surface, provided with the heat dissipation plate strips 2, of the plate body 1, the heights of the installation bosses 3 are larger than the heights of. The mounting bosses 3 and the tray body 1 are integrally formed and evenly distributed on the tray surface of the tray body 1. The height difference between the adjacent radiating fins 2 is 1mm except for the height difference between the radiating fin i 201 and the radiating fin ii 202. The distance between the adjacent radiating fins 2 is gradually decreased along the direction of decreasing the height of the radiating fins 2 by taking the distance between the radiating fins i 201 and the radiating fins ii 202 as a reference. The radiating fins 2 are inclined to one side of the direction in which the height of the radiating fins 2 decreases.
The manufacturing method of the arc-shaped radiating strip alloy steel brake disc comprises the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
The step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, ferrotitanium, zirconium powder and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, pre-deoxidizing the added calcium silicon, and adding electrolytic manganese, crystalline silicon and 0.1 weight percent of rare earth ferrosilicon after melting;
d, adding 0.1 weight percent of pure rare earth, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
step G, adding 0.2% of pure rare earth by weight, sampling and analyzing;
step H, adding 0.14 weight percent of pure rare earth for refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
The step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 530 ℃, and preserving heat for 1.5 hours;
step II, heating the temperature in the normalizing furnace to 950 ℃, and preserving the heat for 2 hours;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 950 ℃ for heat preservation for 30 minutes and then quenching;
and IV, placing the brake disc in a tempering furnace at the temperature of 530 ℃, preserving the heat for 180 minutes, taking out, and air-cooling to room temperature.
And step V, placing the brake disc in a tempering furnace at 480 ℃, preserving the heat for 90 minutes, taking out, and air-cooling to room temperature.
The brake disc in this embodiment installs on the wheel right side through mounting hole 4 on the installation boss 3, the curved design of heat dissipation lath 2, the design that highly increases progressively, the design of slope to one side and the design that the interval is progressively changed make the air volume greatly increased between each heat dissipation lath, make the heat that friction braking produced can disperse more fast, the high fever that the friction produced has significantly reduced the ablation to brake disc friction surface, the hot creep and the hot fatigue damage of brake disc have effectively been reduced, the performance of brake disc has been improved, the life of brake disc has been prolonged.
The following are the performance test results for the brake disc of this example at a test temperature of 20 ℃:
| sample number | Rm(Mpa) | RP0.2(Mpa) | A% | Z% | HBW | kv2/J | Metallographic phase |
| 1 | 1140 | 1050 | 14.5 | 45 | 352 | 81 | |
| 2 | 1160 | 1070 | 13 | 42 | 363 | 78 | |
| 3 | 1130 | 1040 | 13.5 | 43 | 355 | 74 | |
| 4 | 1180 | 1086 | 12.5 | 41 | 366 | 76 | S loop |
The following are the test results of the temperature of the brake disc at different test speeds in the 1:1 braking power test:
the brake disc produced by adopting the process, the element proportion and the structure in the embodiment can completely meet the use requirement of the concentrated power motor train unit, the wear resistance, the heat resistance and the fatigue resistance meet the requirements, the heat dissipation performance is good, the manufacturing process is not complex, and the service life is longer.
Comparative example 1
The utility model provides an arc cooling panel alloy steel brake disc, includes disk body 1, the one side of disk body 1 is smooth, and 40 curved cooling panel 2 of another side arranged, cooling panel 2 and 1 integrated into one piece of disk body, 1 material chemical composition of disk body and each composition weight percent are as follows: 0.20% of C, 0.40% of Si, 0.8% of Mn, 0.4% of Cr, 0.5% of Ni, 0.4% of Mo, 0.2% of Zr, 0.3% of Ti, 0.1% of Pd, 0.4% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe. The cross section of the radiating strip 2 is a parallelogram, the connecting line of the central point of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body 1. The middle of the tray body 1 is provided with a hole, the radiating strips 2 are circumferentially arranged on the tray surface of the tray body 1 by taking the circle center of the tray body 1 as the circle center, and the heights of the radiating strips 2 are equal. The heat dissipation plate strip 2 comprises an adjacent heat dissipation plate strip I201 and an adjacent heat dissipation plate strip II 202, wherein 3 equal-height installation bosses 3 are further arranged on one surface, on which the heat dissipation plate strip 2 is arranged, of the tray body 1, the height of each installation boss 3 is larger than that of the heat dissipation plate strip 2, and installation holes 4 are formed in the installation bosses 3. The mounting bosses 3 and the tray body 1 are integrally formed and evenly distributed on the tray surface of the tray body 1. The distance between the adjacent radiating strips 2 is gradually decreased in an equal difference manner along the counterclockwise direction by taking the distance between the radiating strip I201 and the radiating strip II 202 as a reference. The radiating fins 2 are inclined to the counterclockwise direction.
The manufacturing method of the arc-shaped radiating strip alloy steel brake disc comprises the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
The step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, ferrotitanium, zirconium powder and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, pre-deoxidizing the added calcium silicon, and adding electrolytic manganese, crystalline silicon and 0.08% of rare earth ferrosilicon after melting;
d, adding 0.08 weight percent of pure rare earth, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
step G, adding 0.1 weight percent of pure rare earth, sampling and analyzing;
step H, adding 0.1 weight percent of pure rare earth for refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
The step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 500 ℃, and preserving heat for 1.5 hours;
step II, heating the temperature in the normalizing furnace to 900 ℃, and preserving the heat for 2 hours;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900 ℃ for heat preservation for 30 minutes and then quenching;
and IV, placing the brake disc in a tempering furnace at the temperature of 500 ℃, preserving the heat for 180 minutes, taking out, and air-cooling to room temperature.
And step V, placing the brake disc in a tempering furnace at the temperature of 450 ℃, preserving the heat for 90 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
The comparative example is identical to example 1 in material ratio and production process, and differs from example 1 only in that the fin members 2 in the comparative example are not designed to have a height increasing, and the fin members 2 in the comparative example have the same height.
The design that the radiator fin strip height increases progressively can avoid radiator fin strip 2 to shelter from each other to a certain extent, and the air volume between the radiator fin strip 2 of increase brake disc during operation, and then makes the heat that friction braking produced can disperse more fast, reduces the temperature of brake disc during operation.
The following are the running temperature test results of the brake disc in this comparative example in the 1:1 braking power test:
comparison of this comparative example with the test results of example 1 shows that the design with increasing fin heights can reduce the operating temperature of the brake disk.
The temperature of reduction brake disc during operation can reduce the ablation of high fever to the brake disc friction surface, effectively reduces the hot creep and the thermal fatigue damage of brake disc, has improved the performance of brake disc, has prolonged the life of brake disc.
Comparative example 2
The utility model provides an arc cooling panel alloy steel brake disc, includes disk body 1, the one side of disk body 1 is smooth, and 40 curved cooling panel 2 of another side arranged, cooling panel 2 and 1 integrated into one piece of disk body, 1 material chemical composition of disk body and each composition weight percent are as follows: 0.20% of C, 0.40% of Si, 0.8% of Mn, 0.4% of Cr, 0.5% of Ni, 0.4% of Mo, 0.2% of Zr, 0.3% of Ti, 0.1% of Pd, 0.4% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe. The cross section of the radiating strip 2 is a parallelogram, the connecting line of the central point of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body 1. The improved heat dissipation plate is characterized in that holes are formed in the middle of the plate body 1, the heat dissipation plate strips 2 are circumferentially and uniformly arranged in the plate surface of the plate body 1 by taking the circle center of the plate body 1 as the circle center, the heat dissipation plate strips 2 comprise adjacent heat dissipation plate strips I201 and heat dissipation plate strips II 202, the heights of the heat dissipation plate strips 2 are increased in an equidifferent mode from the heat dissipation plate strips I201 to the heat dissipation plate strips II 202 in the clockwise direction, 3 equal-height installation bosses 3 are further arranged on one surface, provided with the heat dissipation plate strips 2, of the plate body 1, the heights of the installation bosses 3 are larger than the heights of. The mounting bosses 3 and the tray body 1 are integrally formed and evenly distributed on the tray surface of the tray body 1. The height difference between the adjacent radiating fins 2 is 1mm except for the height difference between the radiating fin i 201 and the radiating fin ii 202. The spacing between adjacent radiator panels 2 is equal. The radiating fins 2 are inclined to one side of the direction in which the height of the radiating fins 2 decreases.
The manufacturing method of the arc-shaped radiating strip alloy steel brake disc comprises the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
The step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, ferrotitanium, zirconium powder and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, pre-deoxidizing the added calcium silicon, and adding electrolytic manganese, crystalline silicon and 0.08% of rare earth ferrosilicon after melting;
d, adding 0.08 weight percent of pure rare earth, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
step G, adding 0.1 weight percent of pure rare earth, sampling and analyzing;
step H, adding 0.1 weight percent of pure rare earth for refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
The step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 500 ℃, and preserving heat for 1.5 hours;
step II, heating the temperature in the normalizing furnace to 900 ℃, and preserving the heat for 2 hours;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900 ℃ for heat preservation for 30 minutes and then quenching;
and IV, placing the brake disc in a tempering furnace at the temperature of 500 ℃, preserving the heat for 180 minutes, taking out, and air-cooling to room temperature.
And step V, placing the brake disc in a tempering furnace at the temperature of 450 ℃, preserving the heat for 90 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
The comparative example is identical to example 1 in material proportioning and production process, and differs from example 1 only in that the spacing between adjacent cooling fins 2 in the comparative example is not graded, but is equal, that is, the cooling fins 2 are uniformly distributed around the disc surface of the disc body 1.
The arrangement design of the interval gradient can increase the ventilation quantity between the radiating strips 2 when the brake disc works, and further the heat generated by friction braking can be dissipated more quickly.
The following are the running temperature test results of the brake disc in this comparative example in the 1:1 braking power test:
compared with the test result of the embodiment 1, the comparison result shows that the arrangement design of the gradually changed distance between the radiating strips can effectively reduce the working temperature of the brake disc.
The temperature of reducing the brake disc during operation can reduce the ablation of high fever to the brake disc friction surface, effectively reduces the hot creep and the thermal fatigue damage of brake disc, has improved the performance of brake disc, has prolonged the life of brake disc.
Comparative example 3:
the present comparative example is the same as example 1 in material ratio and production process, and differs from example 1 only in that the heat radiating fins 2 in the present comparative example are not inclined to the side of the direction in which the height of the heat radiating fins 2 decreases, but are perpendicular to the disk surface of the disk body 1.
The following are the running temperature test results of the brake disc in this comparative example in the 1:1 braking power test:
comparing the test results of this comparative example with example 1 shows that the inclined design of the heat sink fins promotes faster dissipation of the heat generated by friction braking, thereby reducing the high heat generated by friction.
The high heat generated by friction reduction can reduce the ablation of the high heat to the friction surface of the brake disc, effectively reduce the thermal creep and the thermal fatigue damage of the brake disc, improve the performance of the brake disc and prolong the service life of the brake disc.
Comparative example 4
The comparative example is the same as the example 1 in material proportion and production process, and is different from the example 1 only in that the radiating laths 2 in the comparative example do not adopt the design of increasing height, inclining to one side of the height reducing direction and gradually changing space, the radiating laths 2 in the comparative example have the same height, and the space is uniformly surrounded on the disk surface of the disk body 1 and is vertical to the disk surface of the disk body 1.
The comprehensive design that the height of the radiating strips is increased progressively, the radiating strips are inclined to one side of the height reducing direction and encircled in an involute mode enables the ventilation quantity among the radiating strips to be greatly increased, so that heat generated by friction braking can be dissipated more quickly, and the working temperature of the brake disc is greatly reduced.
The following are the running temperature test results of the brake disc in this comparative example in the 1:1 braking power test:
comparison of the test results of this comparative example with those of example 1 shows that the combined design of the fin plate height increasing, the inclination to the side of the height decreasing direction, and the involute type wrap can reduce the temperature of the brake disk during operation.
The temperature of reducing the brake disc during operation can reduce the ablation of high fever to the brake disc friction surface, effectively reduces the hot creep and the thermal fatigue damage of brake disc, has improved the performance of brake disc, has prolonged the life of brake disc.
Comparative example 5
The utility model provides an arc cooling panel alloy steel brake disc, includes disk body 1, the one side of disk body 1 is smooth, and 40 curved cooling panel 2 of another side arranged, cooling panel 2 and 1 integrated into one piece of disk body, 1 material chemical composition of disk body and each composition weight percent are as follows: 0.20% of C, 0.40% of Si, 0.8% of Mn, 0.4% of Cr, 0.5% of Ni, 0.4% of Mo, 0.3% of Ti, 0.1% of Pd, 0.4% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe. The cross section of the radiating strip 2 is a parallelogram, the connecting line of the central point of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body 1. The improved heat dissipation plate is characterized in that a hole is formed in the middle of the plate body 1, the heat dissipation plate strips 2 are circumferentially arranged in the plate surface of the plate body 1 by taking the circle center of the plate body 1 as the circle center, the heat dissipation plate strips 2 comprise adjacent heat dissipation plate strips I201 and heat dissipation plate strips II 202, the heights of the heat dissipation plate strips 2 are increased in an equidifferent mode from the heat dissipation plate strips I201 to the heat dissipation plate strips II 202 in the clockwise direction, 3 equal-height installation bosses 3 are further arranged on one surface, provided with the heat dissipation plate strips 2, of the plate body 1, the heights of the installation bosses 3 are larger than the heights of. The mounting bosses 3 and the tray body 1 are integrally formed and evenly distributed on the tray surface of the tray body 1. The height difference between the adjacent radiating fins 2 is 1mm except for the height difference between the radiating fin i 201 and the radiating fin ii 202. The distance between the adjacent radiating fins 2 is gradually decreased along the direction of decreasing the height of the radiating fins 2 by taking the distance between the radiating fins i 201 and the radiating fins ii 202 as a reference. The radiating fins 2 are inclined to one side of the direction in which the height of the radiating fins 2 decreases.
The manufacturing method of the arc-shaped radiating strip alloy steel brake disc comprises the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
The step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, ferrotitanium and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, pre-deoxidizing the added calcium silicon, and adding electrolytic manganese, crystalline silicon and 0.08% of rare earth ferrosilicon after melting;
d, adding 0.08 weight percent of pure rare earth, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
step G, adding 0.1 weight percent of pure rare earth, sampling and analyzing;
step H, adding 0.1 weight percent of pure rare earth for refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
The step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace with the temperature of 500, and preserving heat for 1.5 hours;
step II, heating the temperature in the normalizing furnace to 900 ℃, and preserving the heat for 2 hours;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900 ℃ and keeping the temperature for 30 minutes and then quenching;
and IV, placing the brake disc in a tempering furnace with the temperature of 500, preserving the heat for 180 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
And step V, placing the brake disc in a tempering furnace with the temperature of 450 ℃, preserving the heat for 90 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
This comparative example differs from example 1 in that no zirconium was added to the brake disc material.
The following are the performance test results for the brake disc of this example at a test temperature of 20 ℃:
| sample number | Rm(Mpa) | RP0.2(Mpa) | A% | Z% | HBW | kv2/J | Metallographic phase |
| 1 | 1080 | 990 | 10 | 40 | 350 | 80 | |
| 2 | 1070 | 980 | 9.8 | 38 | 361 | 76 | |
| 3 | 1100 | 1000 | 10.5 | 41 | 352 | 78 | |
| 4 | 1090 | 1006 | 11 | 41 | 364 | 72 | S loop |
The results of this comparative example and example 1 show that the addition of zirconium produces an effect of gain on the mechanical properties of the brake disc.
Comparative example 6
The utility model provides an arc cooling panel alloy steel brake disc, includes disk body 1, the one side of disk body 1 is smooth, and 40 curved cooling panel 2 of another side arranged, cooling panel 2 and 1 integrated into one piece of disk body, 1 material chemical composition of disk body and each composition weight percent are as follows: 0.20% of C, 0.40% of Si, 0.8% of Mn, 0.4% of Cr, 0.5% of Ni, 0.4% of Mo, 0.2% of Zr, 0.1% of Pd, 0.4% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe. The cross section of the radiating strip 2 is a parallelogram, the connecting line of the central point of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body 1. The improved heat dissipation plate is characterized in that a hole is formed in the middle of the plate body 1, the heat dissipation plate strips 2 are circumferentially arranged in the plate surface of the plate body 1 by taking the circle center of the plate body 1 as the circle center, the heat dissipation plate strips 2 comprise adjacent heat dissipation plate strips I201 and heat dissipation plate strips II 202, the heights of the heat dissipation plate strips 2 are increased in an equidifferent mode from the heat dissipation plate strips I201 to the heat dissipation plate strips II 202 in the clockwise direction, 3 equal-height installation bosses 3 are further arranged on one surface, provided with the heat dissipation plate strips 2, of the plate body 1, the heights of the installation bosses 3 are larger than the heights of. The mounting bosses 3 and the tray body 1 are integrally formed and evenly distributed on the tray surface of the tray body 1. The height difference between the adjacent radiating fins 2 is 1mm except for the height difference between the radiating fin i 201 and the radiating fin ii 202. The distance between the adjacent radiating fins 2 is gradually decreased along the direction of decreasing the height of the radiating fins 2 by taking the distance between the radiating fins i 201 and the radiating fins ii 202 as a reference. The radiating fins 2 are inclined to one side of the direction in which the height of the radiating fins 2 decreases.
The manufacturing method of the arc-shaped radiating strip alloy steel brake disc comprises the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
The step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, zirconium powder and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, pre-deoxidizing the added calcium silicon, and adding electrolytic manganese, crystalline silicon and 0.08% of rare earth ferrosilicon after melting;
d, adding 0.08 weight percent of pure rare earth, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
step G, adding 0.1 weight percent of pure rare earth, sampling and analyzing;
step H, adding 0.1 weight percent of pure rare earth for refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
The step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 500 ℃, and preserving heat for 1.5 hours;
step II, heating the temperature in the normalizing furnace to 900 ℃, and preserving the heat for 2 hours;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900 ℃ for heat preservation for 30 minutes and then quenching;
and IV, placing the brake disc in a tempering furnace at the temperature of 500 ℃, preserving the heat for 180 minutes, taking out, and air-cooling to room temperature.
And step V, placing the brake disc in a tempering furnace at the temperature of 450 ℃, preserving the heat for 90 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
This comparative example differs from example 1 in that no titanium was added to the brake disc material.
The following are the performance test results for the brake disc of this example at a test temperature of 20 ℃:
| sample number | Rm(Mpa) | RP0.2(Mpa) | A% | Z% | HBW | kv2/J | Metallographic phase |
| 1 | 1068 | 950 | 11.2 | 40 | 352 | 60 | |
| 2 | 1070 | 980 | 11.3 | 37 | 351 | 56 | |
| 3 | 1060 | 960 | 10.5 | 36 | 342 | 58 | |
| 4 | 1090 | 986 | 12 | 41 | 344 | 62 | S loop |
The test results of the comparative example and the example 1 show that the addition of titanium has an effect of increasing the mechanical properties of the brake disc.
Comparative example 7
The utility model provides an arc cooling panel alloy steel brake disc, includes disk body 1, the one side of disk body 1 is smooth, and 40 curved cooling panel 2 of another side arranged, cooling panel 2 and 1 integrated into one piece of disk body, 1 material chemical composition of disk body and each composition weight percent are as follows: 0.20% of C, 0.40% of Si, 0.8% of Mn, 0.4% of Cr, 0.5% of Ni, 0.4% of Mo, 0.2% of Zr, 0.3% of Ti, 0.4% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe. The cross section of the radiating strip 2 is a parallelogram, the connecting line of the central point of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body 1. The improved heat dissipation plate is characterized in that a hole is formed in the middle of the plate body 1, the heat dissipation plate strips 2 are circumferentially arranged in the plate surface of the plate body 1 by taking the circle center of the plate body 1 as the circle center, the heat dissipation plate strips 2 comprise adjacent heat dissipation plate strips I201 and heat dissipation plate strips II 202, the heights of the heat dissipation plate strips 2 are increased in an equidifferent mode from the heat dissipation plate strips I201 to the heat dissipation plate strips II 202 in the clockwise direction, 3 equal-height installation bosses 3 are further arranged on one surface, provided with the heat dissipation plate strips 2, of the plate body 1, the heights of the installation bosses 3 are larger than the heights of. The mounting bosses 3 and the tray body 1 are integrally formed and evenly distributed on the tray surface of the tray body 1. The height difference between the adjacent radiating fins 2 is 1mm except for the height difference between the radiating fin i 201 and the radiating fin ii 202. The distance between the adjacent radiating fins 2 is gradually decreased along the direction of decreasing the height of the radiating fins 2 by taking the distance between the radiating fins i 201 and the radiating fins ii 202 as a reference. The radiating fins 2 are inclined to one side of the direction in which the height of the radiating fins 2 decreases.
The manufacturing method of the arc-shaped radiating strip alloy steel brake disc comprises the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
The step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, zirconium powder and ferrotitanium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, pre-deoxidizing the added calcium silicon, and adding electrolytic manganese, crystalline silicon and 0.08% of rare earth ferrosilicon after melting;
d, adding 0.08 weight percent of pure rare earth, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
step G, adding 0.1 weight percent of pure rare earth, sampling and analyzing;
step H, adding 0.1 weight percent of pure rare earth for refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
The step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 500 ℃, and preserving heat for 1.5 hours;
step II, heating the temperature in the normalizing furnace to 900 ℃, and preserving the heat for 2 hours;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900 ℃ for heat preservation for 30 minutes and then quenching;
and IV, placing the brake disc in a tempering furnace at the temperature of 500 ℃, preserving the heat for 180 minutes, taking out, and air-cooling to room temperature.
And step V, placing the brake disc in a tempering furnace at the temperature of 450 ℃, preserving the heat for 90 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
This comparative example differs from example 1 in that no palladium was added to the brake disc material.
The following are the performance test results for the brake disc of this example at a test temperature of 20 ℃:
| sample number | Rm(Mpa) | RP0.2(Mpa) | A% | Z% | HBW | kv2/J | Metallographic phase |
| 1 | 1086 | 995 | 12.4 | 42 | 356 | 66 | |
| 2 | 1078 | 980 | 11.3 | 40 | 362 | 56 | |
| 3 | 1080 | 986 | 12.5 | 43 | 350 | 72 | |
| 4 | 1090 | 1006 | 12.9 | 40 | 354 | 69 | S loop |
Comparison of this comparative example with the test results of example 1 shows that the addition of palladium produces a gain in the mechanical properties of the brake disc.
Comparative example 8
The utility model provides an arc cooling panel alloy steel brake disc, includes disk body 1, the one side of disk body 1 is smooth, and 40 curved cooling panel 2 of another side arranged, cooling panel 2 and 1 integrated into one piece of disk body, 1 material chemical composition of disk body and each composition weight percent are as follows: 0.20% of C, 0.40% of Si, 0.8% of Mn, 0.4% of Cr, 0.5% of Ni, 0.4% of Mo, 0.2% of Zr, 0.3% of Ti, 0.1% of Pd, 0.4% of RE, not more than 0.013% of P, not more than 0.012% of S and the balance of Fe. The cross section of the radiating strip 2 is a parallelogram, the connecting line of the central point of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body 1. The improved heat dissipation plate is characterized in that a hole is formed in the middle of the plate body 1, the heat dissipation plate strips 2 are circumferentially arranged in the plate surface of the plate body 1 by taking the circle center of the plate body 1 as the circle center, the heat dissipation plate strips 2 comprise adjacent heat dissipation plate strips I201 and heat dissipation plate strips II 202, the heights of the heat dissipation plate strips 2 are increased in an equidifferent mode from the heat dissipation plate strips I201 to the heat dissipation plate strips II 202 in the clockwise direction, 3 equal-height installation bosses 3 are further arranged on one surface, provided with the heat dissipation plate strips 2, of the plate body 1, the heights of the installation bosses 3 are larger than the heights of. The mounting bosses 3 and the tray body 1 are integrally formed and evenly distributed on the tray surface of the tray body 1. The height difference between the adjacent radiating fins 2 is 1mm except for the height difference between the radiating fin i 201 and the radiating fin ii 202. The distance between the adjacent radiating fins 2 is gradually decreased along the direction of decreasing the height of the radiating fins 2 by taking the distance between the radiating fins i 201 and the radiating fins ii 202 as a reference. The radiating fins 2 are inclined to one side of the direction in which the height of the radiating fins 2 decreases.
The manufacturing method of the arc-shaped radiating strip alloy steel brake disc comprises the following steps:
step 1, molding and core making;
and 5, testing and inspecting the performance of the workpiece.
The step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, ferrotitanium, zirconium powder and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, pre-deoxidizing the added calcium silicon, and adding electrolytic manganese, crystalline silicon and 0.08% of rare earth ferrosilicon after melting;
d, adding 0.08 weight percent of pure rare earth, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
step G, adding 0.1 weight percent of pure rare earth, sampling and analyzing;
step H, adding 0.1 weight percent of pure rare earth for refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
The step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 500 ℃, and preserving heat for 1.5 hours;
step II, heating the temperature in the normalizing furnace to 900 ℃, and preserving the heat for 2 hours;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900 ℃ for heat preservation for 30 minutes and then quenching;
and IV, placing the brake disc in a tempering furnace at the temperature of 500 ℃, preserving the heat for 180 minutes, taking out, and air-cooling to room temperature.
The difference between the comparative example and the example 1 is that in the tempering process in the workpiece heat treatment process, the brake disc is placed in a tempering furnace with the temperature of 500 ℃, the heat preservation is carried out for 180 minutes, the brake disc is taken out and air-cooled to the room temperature, and the process is not carried out like the process of the example 1 that the brake disc is placed in the tempering furnace with the temperature of 450 ℃ again, the heat preservation is carried out for 90 minutes, and the brake disc is taken out and air-cooled to the room.
The following are the performance test results for the brake disc of this example at a test temperature of 20 ℃:
| sample number | Rm(Mpa) | RP0.2(Mpa) | A% | Z% | HBW | kv2/J | Metallographic phase |
| 1 | 1078 | 950 | 10.4 | 45 | 358 | 50 | |
| 2 | 1070 | 980 | 11.3 | 42 | 360 | 66 | |
| 3 | 1090 | 960 | 10.5 | 43 | 350 | 58 | |
| 4 | 1100 | 1006 | 11 | 41 | 360 | 52 | S loop |
The test results of this comparative example and example 1 show that step iv of the heat treatment of the workpiece in example 1 has a positive effect on the mechanical properties of the brake disc.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.
Claims (4)
1. The utility model provides an arc cooling panel alloy steel brake disc, includes disk body (1), and the one side of disk body (1) is smooth, and the curved cooling panel (2) of the predetermined quantity of another side having arranged, its characterized in that, disk body (1) material chemical composition and each composition weight percent are as follows: 0.20 to 0.25 percent of C, 0.40 to 0.60 percent of Si, 0.8 to 1.0 percent of Mn, 0.4 to 0.7 percent of Cr, 0.5 to 0.6 percent of Ni, 0.4 to 0.6 percent of Mo, 0.2 to 0.4 percent of Zr, 0.3 to 0.5 percent of Ti, 0.1 to 0.3 percent of Pd, 0.4 to 0.5 percent of RE, not more than 0.013 percent of P, not more than 0.012 percent of S and the balance of Fe; the cross section of the radiating strip (2) is a parallelogram, the connecting line of the central points of the parallelogram is an arc line, and the arc line is distributed along the radial direction of the disc body (1); the middle of the tray body (1) is provided with a hole, the radiating strips (2) are circumferentially arranged on the tray surface of the tray body (1) by taking the circle center of the tray body (1) as the circle center, the radiating strips (2) comprise adjacent radiating strips I (201) and radiating strips II (202), the heights of the radiating strips (2) are increased in an equidifferent mode from the radiating strips I (201) to the radiating strips II (202) along the clockwise direction or the anticlockwise direction, one surface, on which the radiating strips (2) are arranged, of the tray body (1) is also provided with at least 3 equal-height mounting bosses (3), the heights of the mounting bosses (3) are larger than the heights of the radiating strips II (202), and the mounting bosses (3) are provided with mounting holes (4); except for the height difference between the radiating strip I (201) and the radiating strip II (202), the height difference between the adjacent radiating strips (2) is 1 mm; the distance between the adjacent radiating strips (2) is reduced progressively along the direction of reducing the height of the radiating strips (2) by taking the distance between the radiating strip I (201) and the radiating strip II (202) as a reference; the radiating plate strips (2) are inclined towards one side of the height reducing direction of the radiating plate strips (2).
2. A method of making a curved fin alloy steel brake disc as claimed in claim 1, comprising the steps of:
step 1, molding and core making;
step 2, smelting and pouring;
step 3, shakeout cleaning and turning;
step 4, heat treatment of the workpiece;
and 5, testing and inspecting the performance of the workpiece.
3. The manufacturing method of the arc-shaped cooling plate alloy steel brake disc as claimed in claim 2, wherein the step 2 comprises the following steps:
step A, adding 60 weight percent of returned furnace charge and 40 weight percent of refined furnace charge into a smelting furnace, and adding ferrochrome, ferromolybdenum, electrolytic nickel, ferrotitanium, zirconium powder and palladium after the materials are basically molten;
b, after the ingredients are melted down, adding an alkaline slagging material, reducing power, and pouring the furnace to remove slag;
step C, adding calcium silicon for pre-deoxidation, and adding electrolytic manganese, crystalline silicon and 0.08-0.12% of rare earth ferrosilicon after melting;
d, adding 0.08-0.12% of pure rare earth by weight, and later adding silicon-aluminum and silicon-barium for final deoxidation;
e, sampling and analyzing, and manufacturing a spectral analysis sample and a round cup sample;
step F, adjusting chemical components, and adding a carbon agent, electrolytic manganese and ferrochrome according to actual conditions;
g, adding 0.1-0.2% of pure rare earth by weight, and sampling and analyzing;
step H, adding 0.1-0.2 wt% of pure rare earth, refining for 3-5 minutes, tapping at 1660 +/-10 ℃, calming for 3 minutes, pouring at 1580 +/-10 ℃, and pouring for 15 seconds +/-5 seconds per piece;
step I, taking a sample after the furnace for spectral analysis.
4. The method for manufacturing the arc-shaped cooling plate alloy steel brake disc as claimed in claim 2, wherein the step 4 comprises the following steps:
step I, placing the brake disc obtained in the step 3 in a normalizing furnace at the temperature of 500-550 ℃, and preserving heat for 1-2 hours;
step II, heating the temperature in the normalizing furnace to 900-;
step III, placing the brake disc in a quenching furnace with the temperature controlled at 900-;
IV, placing the brake disc in a tempering furnace at the temperature of 500-550 ℃, preserving the heat for 180 minutes, taking out and air-cooling to room temperature;
and V, placing the brake disc in a tempering furnace at the temperature of 450-500 ℃, preserving the heat for 90 minutes, taking out the brake disc, and air-cooling the brake disc to the room temperature.
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| CN112178086B (en) * | 2020-09-30 | 2021-08-13 | 福建祥鑫股份有限公司 | Aluminum-steel composite material and application thereof in production of brake disc |
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