CN113458363B - Bimetal iron-iron composite brake drum and manufacturing method thereof - Google Patents
Bimetal iron-iron composite brake drum and manufacturing method thereof Download PDFInfo
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- CN113458363B CN113458363B CN202110843768.5A CN202110843768A CN113458363B CN 113458363 B CN113458363 B CN 113458363B CN 202110843768 A CN202110843768 A CN 202110843768A CN 113458363 B CN113458363 B CN 113458363B
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- 239000002131 composite material Substances 0.000 title claims abstract description 56
- NJFMNPFATSYWHB-UHFFFAOYSA-N ac1l9hgr Chemical compound [Fe].[Fe] NJFMNPFATSYWHB-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910052742 iron Inorganic materials 0.000 claims abstract description 35
- 238000005266 casting Methods 0.000 claims abstract description 28
- 229910001141 Ductile iron Inorganic materials 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- 229910001060 Gray iron Inorganic materials 0.000 claims abstract description 18
- 238000009750 centrifugal casting Methods 0.000 claims abstract description 11
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 3
- 244000035744 Hura crepitans Species 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 229910001126 Compacted graphite iron Inorganic materials 0.000 abstract description 9
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000010112 shell-mould casting Methods 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 241001584785 Anavitrinella pampinaria Species 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 238000005493 welding type Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
-
- 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
- F16D65/02—Braking members; Mounting thereof
- F16D65/10—Drums for externally- or internally-engaging brakes
-
- 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
- F16D2200/0013—Cast iron
-
- 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
Abstract
The invention discloses a bimetal iron-iron composite brake drum and a manufacturing method thereof, wherein the outer layer of the iron-iron composite brake drum adopts high-strength ductile iron or high-strength vermicular cast iron, and the inner layer adopts wear-resistant gray cast iron; and the two are metallurgically bonded, and the method specifically comprises the following steps: (1) The outer layer high-strength ductile iron or high-strength vermicular cast iron of the bimetal iron composite brake drum is cast by adopting a shell mould or static pressure; (2) After casting an outer iron shell, centrifugally casting composite wear-resistant gray cast iron with an inner layer, spraying a layer of fusing agent on the inner layer of the iron shell before centrifugal casting, and adopting metallurgical bonding; in order to further increase the overall strength and rigidity of the brake drum and increase the thickness of the high-strength ductile iron/vermicular iron layer as much as possible, the thickness of the inner wear-resistant gray cast iron layer is 3-10mm. Compared with a steel composite brake drum, the rigidity of the bimetal iron-iron composite brake drum is improved by about 50%, and the service life of the bimetal iron-iron composite brake drum can be prolonged by more than one time. And in a high-temperature environment, the attenuation of the strength and the rigidity is small, so that the brake is more suitable for engineering vehicles braking for a long time under severe road conditions.
Description
Technical Field
The invention belongs to the technical field of automobile brake systems, and particularly relates to a bimetal iron-iron composite brake drum and a manufacturing method thereof.
Background
At present, the brake drums widely applied in the market mainly comprise common gray iron brake drums, steel composite brake drums, welding type brake drums and the like. The common gray iron brake drum has insufficient strength and rigidity and is easy to crack and drop, the bimetal steel composite brake drum adopts powerful spinning, and the hardness and strength of a steel plate cannot be too high in order to facilitate the spinning; under the working condition of high temperature, the outer layer steel shell of the bimetal steel composite brake drum is easy to generate phase change, and the strength and the rigidity are rapidly reduced, so that the bimetal steel composite brake drum still has cracks; the production process of the welding type brake drum is complex, and the production cost is high; and the outer layer of the welding type brake drum is also made of steel, and the problem of high-temperature phase change is also faced. At present, a new idea is urgently needed in the brake drum industry to thoroughly solve the problems of insufficient rigidity and short service life of the brake drum.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a bimetal iron-iron composite brake drum and a manufacturing method thereof, and solves the problems of insufficient rigidity and short service life of the conventional brake drum.
In order to solve the technical problems, the invention adopts the following technical scheme:
the manufacturing method of the bimetal iron composite brake drum is characterized in that the outer layer of the bimetal iron composite brake drum adopts high-strength ductile iron or high-strength vermicular cast iron, and the inner layer adopts wear-resistant gray cast iron; and the two are metallurgically bonded, and the method specifically comprises the following steps:
(1) The outer layer high-strength ductile iron or high-strength vermicular cast iron of the bimetal iron composite brake drum adopts shell mold casting, static pressure casting or other casting methods;
(2) After casting the outer iron shell, centrifugally casting the composite inner wear-resistant gray cast iron, spraying a layer of fusing agent on the inner layer of the iron shell before centrifugal casting, and adopting metallurgical bonding.
In order to further increase the overall strength and rigidity of the brake drum and increase the thickness of the high-strength ductile iron/vermicular iron layer as much as possible, the thickness of the high-strength ductile iron/vermicular iron layer on the outer layer of the bimetal iron composite brake drum is determined by the diameter of the outer circle of the brake drum, and the thickness of the wear-resistant gray cast iron on the inner layer is set to be 3-10mm.
Preferably, the pouring temperature of the outer layer of the bimetal iron-iron composite brake drum in the step (1) is 1400-1450 ℃, and the pouring time is 8-10 minutes per ladle of molten iron.
Preferably, in the centrifugal casting process in the step (2), the rotating speed of the shell is 600-800r/min, the casting temperature is 1450-1530 ℃, and the casting time is 2-5s.
Preferably, the high-strength ductile iron adopts QT500-7, QT600-3, QT700-2 or higher grade ductile iron.
Preferably, the high-strength vermicular iron adopts RT350, RT550 or higher grade vermicular iron.
Preferably, the inner wear-resistant gray cast iron is high-alloy cast iron, and the high-alloy cast iron comprises HT200, HT250 or HT350.
Preferably, after the molten iron is smelted in the step (1), 1 to 1.8 percent of ferrosilicon rare earth magnesium nodulizer is added into the ladle before casting and pouring on the outer layer of the brake drum.
Compared with the prior art, the invention has the beneficial effects that: 1. the rigidity of the bimetal iron-iron composite brake drum prepared by the manufacturing method is improved by about 50 percent compared with the rigidity of a steel composite brake drum, and the service life of the bimetal iron-iron composite brake drum can be prolonged by more than one time. 2. Simple production equipment, small investment, stable production process and high yield. 3. And in a high-temperature environment, the attenuation of the strength and the rigidity is small, so that the brake is more suitable for engineering vehicles braking for a long time under severe road conditions.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic structural diagram of a bimetallic iron composite brake drum according to the present invention;
FIG. 2 is a schematic view of the casting process of the outer layer of the bimetal iron composite brake drum of the present invention;
FIG. 3 is a schematic view of the structure shown in direction B in FIG. 2;
FIG. 4 is a schematic diagram of the centrifugal casting process of the inner layer of the bimetal iron-iron composite brake drum of the invention;
in the drawings, 1-composite brake drum outer layer; 2-inner layer of composite brake drum; 101-a pouring cup; 102-feeding a sand core; 103-pouring channel; 104-steel shot; 105-a sand box; 106-parting surface assembling seam allowance; 107-lower sand core; 108-cross runners; 109-centrifugal casting machine; 110-self-centering jaws.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the following examples are illustrative only and are not intended to limit the scope of the invention, which is to be given the full breadth of the appended claims and any and all insubstantial modifications and variations thereof which can be made by one skilled in the art based on the teachings of the invention as described above.
A manufacturing method of a bimetal iron composite brake drum is characterized in that an outer layer 1 of the bimetal iron composite brake drum is made of high-strength ductile iron or high-strength vermicular cast iron, and an inner layer 2 of the composite brake drum is made of wear-resistant gray cast iron; and the two are metallurgically bonded, and the method specifically comprises the following steps:
(1) The outer layer high-strength ductile iron or high-strength vermicular cast iron of the bimetal iron composite brake drum adopts shell mold casting, static pressure casting or other casting methods;
(2) After casting the outer iron shell, centrifugally casting the composite inner wear-resistant gray cast iron, spraying a layer of fusing agent on the inner layer of the iron shell before centrifugal casting, and adopting metallurgical bonding.
In order to further increase the overall strength and rigidity of the brake drum and increase the thickness of the high-strength ductile iron/vermicular iron layer as much as possible, the thickness of the high-strength ductile iron/vermicular iron layer on the outer layer of the bimetal iron composite brake drum is determined by the diameter of the outer circle of the brake drum, and the thickness of the wear-resistant gray cast iron on the inner layer is set to be 3-10mm (as shown in figure 1).
Example 1
The manufacturing method of the iron-iron composite brake drum of the embodiment comprises the following steps:
(1) Casting by adopting shell mold casting method to obtain iron-iron composite brake drum outer layer
The outer layer of the iron-iron composite brake drum is made of high-strength ductile iron, the high-strength ductile iron is QT500-7, wherein the tensile strength of the QT500-7 is more than or equal to 500, the yield strength is more than or equal to 320, the elongation is more than or equal to 7 percent, and the hardness is 180HBW-240HBW.
The specific operation is as follows:
a. after molten iron is smelted, 1 to 1.8 percent of ferrosilicon rare earth magnesium nodulizer is added into a ladle before casting; when the content of sulfur in the molten iron stock solution is high, the upper limit of the added nodulizer is taken; when the content of sulfur in the molten iron stock solution is low, the lower limit of the added nodulizer is taken.
According to the oxygen content and the sulfur content in the molten iron stock solution and the ratio of the relative atomic mass of the spheroidizing elements, sulfur and oxidation compounds, the consumption of the spheroidizing elements for deoxidation and desulfurization can be calculated. The residual content and the consumption amount are the actual required amount, the addition amount can be calculated according to the absorption rate, and the using amount of the nodulizer can be obtained according to the component content of the nodulizer.
b. As shown in fig. 2, shell mold casting is used. Firstly, manufacturing a hot core box mould according to a three-dimensional model of a ductile iron shell, wherein 2 sets of hot core box moulds are needed for a brake drum, a filter screen can be placed according to actual needs in the production process to filter residues better, a steel shot 104 with the thickness of 20 centimeters is pre-paved at the bottom of a sand box 105, the sand core (the sand core is composed of an upper sand core 102 and a lower sand core 107) is placed in the hot core box, then the periphery of the sand core and the inside of the sand core are filled with the steel shot, the upper part of the sand core is pressed with the steel shot 104 with the thickness of 20-30 centimeters, and as shown in figure 3, the steel shot 104 is filled in the sand core through a gap between two adjacent cross runners 108; the shot 104 must be tamped with a vibrator to prevent bulging and spark out. The pouring temperature is 1400-1450 ℃, and the pouring time is 8-10 minutes per ladle of molten iron. The pouring time and the pouring temperature need to be strictly controlled. Ensuring good filling. The thickness of the high-strength ductile iron on the outer layer of the bimetal iron composite brake drum is determined by the diameter of the outer circle of the brake drum, in order to further increase the overall strength and rigidity of the brake drum and increase the thickness of the high-strength ductile iron layer as much as possible, after the casting is finished, the high-strength ductile iron layer is cooled and solidified along with a shell mold line, then, the workpiece is taken out, and then, the floating sand on the surface of the workpiece is removed by shot blasting.
(2) Inner composite casting (inner wear-resistant gray cast iron composite centrifugal casting)
As shown in fig. 4, the outer shell of the ductile iron is placed on a self-centering jaw 110 of a centrifugal casting machine 109 by a robot, the casting machine is started, the work is rotated at a high speed, and then the molten iron to be melted is poured into the shell through a pouring cup 101. In the centrifugal casting process, the rotating speed of the shell is 600-800r/min, the casting temperature is 1450-1530 ℃, and the casting time is 2-5s. In the process, the rotating speed of the shell, the pouring temperature, the pouring time and other parameters need to be strictly controlled, and the setting of the parameters can have a great influence on the product quality. Before casting, a fusing agent needs to be scattered into the shell, so that the degree of fusion is increased, and metallurgical bonding is realized.
The thickness of the inner layer of the bimetal iron-iron composite brake drum is 3-10mm. After the pouring is finished, shot blasting cleaning is still needed, and then machining, dynamic balancing, marking, painting, packaging and warehousing are carried out.
Example 2
The outer layer of the iron-iron composite brake drum of the embodiment adopts high-strength vermicular iron RT350, wherein the tensile strength of RT350 is more than or equal to 350MPa, the yield strength is more than or equal to 250MPa, the elongation is more than or equal to 1.5 percent, and the hardness is 180-240HBW; the rest of the procedure was the same as in example 1.
Example 3
The outer layer of the iron-iron composite brake drum of the embodiment adopts high-strength vermicular iron RT550, wherein the tensile strength of RT550 is more than or equal to 550MPa, the yield strength is more than or equal to 400MPa, the elongation is more than or equal to 0.5 percent, and the hardness is 240-300HBW; the rest of the procedure was the same as in example 1.
Example 4
The outer layer of the iron-iron composite brake drum of the embodiment adopts high-strength ductile iron QT600-3, wherein the tensile strength of QT600-3 is more than or equal to 600MPa, the yield strength is more than or equal to 370MPa, the elongation is more than or equal to 3 percent, and the hardness is 210HBW-270HBW; the rest of the procedure was the same as in example 1.
Example 5
The outer layer of the iron-iron composite brake drum of the embodiment adopts high-strength ductile iron QT700-2, wherein the tensile strength of QT700-2 is more than or equal to 700MPa, the yield strength is more than or equal to 420MPa, the elongation is more than or equal to 2 percent, and the hardness is 240HBW-305HBW; the rest of the procedure was the same as in example 1.
The results of the bench tests show that the bimetal iron-iron composite brake drum of the embodiments 1 to 5 of the invention is 4 to 5 times of the common gray iron brake drum and 1 to 2 times of the steel composite brake drum.
Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A manufacturing method of a bimetal iron-iron composite brake drum is characterized in that: the outer layer of the bimetal iron-iron composite brake drum is made of high-strength ductile iron, and the inner layer of the bimetal iron-iron composite brake drum is made of wear-resistant gray cast iron; and the two are metallurgically bonded, and the method specifically comprises the following steps:
(1) The outer layer high-strength ductile iron of the bimetal iron composite brake drum is cast by adopting a shell mould, and the specific operation is as follows:
after molten iron is smelted, 1 to 1.8 percent of ferrosilicon rare earth magnesium nodulizer is added into a ladle before casting;
manufacturing a hot core box mold according to the three-dimensional model of the ductile iron shell;
pre-paving steel shots with the thickness of 20 centimeters at the bottom of the sand box;
after the sand core is placed in the sand core, filling steel shots around the sand core and inside the sand core, and pressing the steel shots with the thickness of 20-30 cm on the upper part of the sand core;
filling steel shots into the adjacent cross runners through a gap between the two cross runners, and compacting the steel shots by using a vibrator;
pouring, wherein the pouring temperature is 1400-1450 ℃, the pouring time is 8-10 minutes per ladle of molten iron, and after the pouring is finished, the casting sand falls out along with the cooling and solidification of the shell mold line, and the workpiece is taken out;
performing shot blasting, and removing floating sand on the surface of the workpiece;
(2) After casting an outer iron shell, centrifugally casting composite wear-resistant gray cast iron with an inner layer, spraying a layer of fusing agent on the inner layer of the iron shell before centrifugal casting, and adopting metallurgical bonding, wherein in the centrifugal casting process, the rotating speed of the shell is 600-800r/min, the casting temperature is 1450-1530 ℃, and the casting time is 2-5s; the thickness of the inner layer of wear-resistant gray cast iron is 3-10mm.
2. The method for manufacturing a bimetal iron and iron composite brake drum according to claim 1, wherein: the high-strength ductile iron adopts QT500-7, QT600-3, QT700-2 or higher-grade ductile iron.
3. The method for manufacturing a bimetal iron and iron composite brake drum according to claim 1, wherein: the inner wear-resistant gray cast iron is high-alloy cast iron which comprises HT200, HT250 or HT350.
4. The bi-metallic iron-iron composite brake drum manufactured according to the manufacturing method of any one of claims 1 to 3.
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| CN202110843768.5A CN113458363B (en) | 2021-07-26 | 2021-07-26 | Bimetal iron-iron composite brake drum and manufacturing method thereof |
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| CN202110843768.5A CN113458363B (en) | 2021-07-26 | 2021-07-26 | Bimetal iron-iron composite brake drum and manufacturing method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033818B (en) * | 2021-10-15 | 2023-12-26 | 陕西汉德车桥有限公司 | Novel brake drum |
| CN114029474B (en) * | 2021-11-22 | 2022-12-16 | 山西汤荣机械制造股份有限公司 | Nodular cast iron-gray cast iron composite brake drum and preparation method thereof |
| US11608867B1 (en) * | 2021-12-26 | 2023-03-21 | Shanxi Tangrong Machinery Manufacturing Co., Ltd. | High-strength and high-thermal conductivity new material composite brake drum and preparation method thereof |
| CN114318035B (en) * | 2021-12-29 | 2022-06-07 | 山西汤荣机械制造股份有限公司 | Preparation method of lightweight composite brake drum |
| DE102022105044A1 (en) * | 2022-03-03 | 2023-09-07 | Bergmann Automotive GmbH | Friction ring for a brake drum of a drum brake of a vehicle, brake drum of a drum brake of a vehicle, vehicle, use of a friction ring for a brake drum of a drum brake of a vehicle and method for producing a friction ring |
| CN114951583A (en) * | 2022-05-16 | 2022-08-30 | 绵阳市联重科技有限公司 | Production method of bimetal brake drum |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945073A (en) * | 1982-09-08 | 1984-03-13 | Jidosha Imono Kk | Wheel hub with brake drum and casting method thereof |
| CN108927506A (en) * | 2018-08-21 | 2018-12-04 | 山东隆基机械股份有限公司 | The preparation method of spheroidal graphite cast-iron and gray cast iron alloying formula brake disc |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5249619A (en) * | 1991-10-30 | 1993-10-05 | Mack Trucks, Inc. | Brake element and a preparation process therefor |
| CN101618452B (en) * | 2009-07-27 | 2010-11-10 | 河南省汤阴县华兴机械制造有限公司 | Method for manufacturing brake drum for automobile |
| CN102000950A (en) * | 2010-11-02 | 2011-04-06 | 嘉兴四通车轮股份有限公司 | Manufacturing method of high-strength light bi-metal brake drum and high-strength light bi-metal brake drum thereof |
| US9121463B2 (en) * | 2012-11-28 | 2015-09-01 | Bendix Spicer Foundation Brake Llc | Nested composite brake drum |
| CN105568123A (en) * | 2015-12-21 | 2016-05-11 | 青特集团有限公司 | Manufacturing method of vermicular graphite cast-iron brake drum |
| CN111120546A (en) * | 2020-01-18 | 2020-05-08 | 山东浩信昌盛汽车零部件智能制造有限公司 | Bimetal composite brake drum and manufacturing method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5945073A (en) * | 1982-09-08 | 1984-03-13 | Jidosha Imono Kk | Wheel hub with brake drum and casting method thereof |
| CN108927506A (en) * | 2018-08-21 | 2018-12-04 | 山东隆基机械股份有限公司 | The preparation method of spheroidal graphite cast-iron and gray cast iron alloying formula brake disc |
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