CN112570709A - Powder sintered brake pad for braking high-speed railway at speed of 420km/h - Google Patents
Powder sintered brake pad for braking high-speed railway at speed of 420km/h Download PDFInfo
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- CN112570709A CN112570709A CN202011592287.3A CN202011592287A CN112570709A CN 112570709 A CN112570709 A CN 112570709A CN 202011592287 A CN202011592287 A CN 202011592287A CN 112570709 A CN112570709 A CN 112570709A
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- Prior art keywords
- powder
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- speed
- pressing
- brake pad
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- 239000000843 powder Substances 0.000 title claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 7
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 16
- 239000000047 product Substances 0.000 claims description 15
- 238000005245 sintering Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 230000003137 locomotive effect Effects 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 241000357293 Leptobrama muelleri Species 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0084—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ carbon or graphite as the main non-metallic constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
Abstract
The invention relates to a preparation method of powder sintered brake pad for 420Km/h high-speed railway brake, and aims to solve the problem of manufacturing a brake pad suitable for a train with the speed of 420Km/h per hour. The technical scheme of the invention is as follows: the material comprises the following components in parts by weight: 2%, tin powder: 1%, silicon carbide: 2%, silica: 3%, alumina powder: 1 percent of copper powder, 50 to 65 percent of iron powder, 10 to 20 percent of iron powder, 4 to 6 percent of molybdenum disulfide, 7 to 10 percent of nickel powder, 4 to 8 percent of tungsten powder and 8 to 16 percent of graphite powder; the invention has the advantages that the problem of slow heat dissipation of rubber products is solved, the locomotive moving at high speed can be braked, the braking effect under certain deformation can be ensured when emergency braking is kept due to more copper mixing, and the original effect can be recovered after deformation due to the hardness of the powder pressed.
Description
Technical Field
The invention belongs to a high-speed railway braking device, and particularly relates to a powder sintered brake pad for braking a high-speed railway at a speed of 420 km/h.
Background
Because aluminum alloy brake discs are intended for use in high speed railway vehicles, newly developed composite brake pads must possess higher coefficient of friction, less wear, and better heat dissipation and heat fade. The existing brake system of the high-speed railway train in China mostly uses metal sintered brake pads, has large specific gravity, large energy consumption and high hardness, is easy to generate noise during braking and is also easy to damage wheels; brake pads produced by the existing synthetic brake pad manufacturers in China are generally suitable for cast iron brake discs, for example, high-speed railway vehicles used for mounting aluminum alloy brake discs, the friction coefficient, the wear rate, the heat dissipation, the heat fading property and the like cannot meet the technical index requirements, and serious potential safety hazards exist, so that the brake pads suitable for the aluminum alloy brake discs need to be developed in order to respond to the design concept of light weight.
The invention aims to solve the technical problem of manufacturing a brake pad suitable for a train with the speed of 420Km/h per hour.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention aims to manufacture a powder sintered brake pad for braking a high-speed railway at the speed of 420 km/h.
The invention aims to provide a powder sintered brake pad for braking a high-speed railway at a speed of 420km/h, which is realized by the following technical scheme and is characterized by comprising the following components: the material comprises the following components in parts by weight: 2%, tin powder: 1%, silicon carbide: 2%, silica: 3%, alumina powder: 1 percent of copper powder, 50 to 65 percent of iron powder, 10 to 20 percent of iron powder, 4 to 6 percent of molybdenum disulfide, 7 to 10 percent of nickel powder, 4 to 8 percent of tungsten powder and 8 to 16 percent of graphite powder.
The preparation method of the powder sintered brake pad for 420Km/h high-speed railway braking is characterized by comprising the following steps: 1) sequentially adding iron powder, copper powder, tungsten powder, nickel powder, aluminum powder, tin powder, graphite powder, molybdenum disulfide, silicon dioxide, silicon carbide and alumina powder into a manual premix in a mixing barrel for 30 minutes, and then putting the premixed materials into a mixer rotating at 360 degrees for mixing for 5 hours;
2) and (3) detecting the mixed raw materials obtained in the first step, sending the mixed raw materials into a pressing process after the mixed raw materials are qualified, pressing at normal temperature, and putting the fabric and the base material into the mixed raw materials for pressing and forming. Pressing pressure is 10MPa, pressure maintaining time is 15S, a full-automatic press is selected, and the steel back and the friction body are directly formed;
3) sending the semi-finished product obtained in the second step into a sintering process, sintering by using a pressurized sintering furnace, keeping the temperature at 1000 ℃, keeping the temperature for 3 hours and keeping the pressure at 5Mpa, and protecting by using hydrogen in the sintering furnace;
4) checking whether the sintered product is qualified or not, re-pressing the product with the size deviation according to the second step, and controlling the size of the product;
5) after various physical and mechanical properties of the product reach the standard, assembling brake pads according to the sequence requirements of the framework, the steel backing and the friction body; and carrying out final inspection after the assembly is finished to obtain a finished product.
The invention has the advantages that: the problem of rubber class goods heat dissipation slow is overcome, can brake the locomotive of high-speed motion, because mix the effect that the copper can guarantee braking under certain deformation when keeping emergency braking more, because its hardness of powder suppression can guarantee to resume as before effect after the deformation.
Detailed Description
The present invention will be described in detail with reference to the following examples.
The material comprises the following components in parts by weight: 2%, tin powder: 1%, silicon carbide: 2%, silica: 3%, alumina powder: 1 percent of copper powder, 50 to 65 percent of iron powder, 10 to 20 percent of iron powder, 4 to 6 percent of molybdenum disulfide, 7 to 10 percent of nickel powder, 4 to 8 percent of tungsten powder and 8 to 16 percent of graphite powder.
The preparation method of the powder sintered brake pad for 420Km/h high-speed railway braking is characterized by comprising the following steps: 1) sequentially adding iron powder, copper powder, tungsten powder, nickel powder, aluminum powder, tin powder, graphite powder, molybdenum disulfide, silicon dioxide, silicon carbide and alumina powder into a manual premix in a mixing barrel for 30 minutes, and then putting the premixed materials into a mixer rotating at 360 degrees for mixing for 5 hours;
2) and (3) detecting the mixed raw materials obtained in the first step, sending the mixed raw materials into a pressing process after the mixed raw materials are qualified, pressing at normal temperature, and putting the fabric and the base material into the mixed raw materials for pressing and forming. Pressing pressure is 10MPa, pressure maintaining time is 15S, a full-automatic press is selected, and the steel back and the friction body are directly formed;
3) sending the semi-finished product obtained in the second step into a sintering process, sintering by using a pressurized sintering furnace, keeping the temperature at 1000 ℃, keeping the temperature for 3 hours and keeping the pressure at 5Mpa, and protecting by using hydrogen in the sintering furnace;
4) checking whether the sintered product is qualified or not, re-pressing the product with the size deviation according to the second step, and controlling the size of the product;
5) after various physical and mechanical properties of the product reach the standard, assembling brake pads according to the sequence requirements of the framework, the steel backing and the friction body; and carrying out final inspection after the assembly is finished to obtain a finished product.
The above description is only an embodiment of the present invention, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (2)
1. A powder sintered brake pad for braking a high-speed railway at a speed of 420km/h is characterized by comprising the following components: the material comprises the following components in parts by weight: 2%, tin powder: 1%, silicon carbide: 2%, silica: 3%, alumina powder: 1 percent of copper powder, 50 to 65 percent of iron powder, 10 to 20 percent of iron powder, 4 to 6 percent of molybdenum disulfide, 7 to 10 percent of nickel powder, 4 to 8 percent of tungsten powder and 8 to 16 percent of graphite powder.
2. The method for preparing the powder sintered brake pad for the high-speed railway brake at the speed of 420Km/h per hour according to claim 1, which is characterized by comprising the following steps: 1) sequentially adding iron powder, copper powder, tungsten powder, nickel powder, aluminum powder, tin powder, graphite powder, molybdenum disulfide, silicon dioxide, silicon carbide and alumina powder into a manual premix in a mixing barrel for 30 minutes, and then putting the premixed materials into a mixer rotating at 360 degrees for mixing for 5 hours;
2) detecting the mixed raw materials obtained in the first step, sending the mixed raw materials into a pressing process after the mixed raw materials are qualified, pressing at normal temperature, firstly putting the fabric and then putting the base material into the pressing process for pressing and forming, wherein the pressing pressure is 10MPa, the pressure maintaining time is 15S, a full-automatic press is selected, and the steel backing and the friction body are directly formed;
3) sending the semi-finished product obtained in the second step into a sintering process, sintering by using a pressurized sintering furnace, keeping the temperature at 1000 ℃, keeping the temperature for 3 hours and keeping the pressure at 5Mpa, and protecting by using hydrogen in the sintering furnace;
4) checking whether the sintered product is qualified or not, re-pressing the product with the size deviation according to the second step, and controlling the size of the product;
5) after various physical and mechanical properties of the product reach the standard, assembling brake pads according to the sequence requirements of the framework, the steel backing and the friction body; and carrying out final inspection after the assembly is finished to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011592287.3A CN112570709A (en) | 2020-12-29 | 2020-12-29 | Powder sintered brake pad for braking high-speed railway at speed of 420km/h |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011592287.3A CN112570709A (en) | 2020-12-29 | 2020-12-29 | Powder sintered brake pad for braking high-speed railway at speed of 420km/h |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112570709A true CN112570709A (en) | 2021-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011592287.3A Pending CN112570709A (en) | 2020-12-29 | 2020-12-29 | Powder sintered brake pad for braking high-speed railway at speed of 420km/h |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112570709A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115097A (en) * | 2013-02-05 | 2013-05-22 | 博深工具股份有限公司 | Friction block of brake block of high speed train and preparation method thereof |
| US20140109723A1 (en) * | 2011-03-30 | 2014-04-24 | Nippon Steel & Sumitomo Metal Corporation | Sintered friction material for high-speed railway |
| CN106351993A (en) * | 2016-08-29 | 2017-01-25 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake lining for high speed train and preparing method thereof |
| CN106979267A (en) * | 2017-05-16 | 2017-07-25 | 北京瑞斯福高新科技股份有限公司 | A kind of high-speed train powder metallurgy brake pad brake pad and preparation method |
| CN110257739A (en) * | 2019-06-21 | 2019-09-20 | 山东金麒麟股份有限公司 | A kind of preparation method of Environment protection type friction material and brake lining and brake lining |
| US20200038959A1 (en) * | 2017-04-07 | 2020-02-06 | Nippon Steel Corporation | Sintered friction material |
| CN111779781A (en) * | 2020-07-08 | 2020-10-16 | 北京浦然轨道交通科技股份有限公司 | Brake pad and manufacturing method thereof |
-
2020
- 2020-12-29 CN CN202011592287.3A patent/CN112570709A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140109723A1 (en) * | 2011-03-30 | 2014-04-24 | Nippon Steel & Sumitomo Metal Corporation | Sintered friction material for high-speed railway |
| CN103115097A (en) * | 2013-02-05 | 2013-05-22 | 博深工具股份有限公司 | Friction block of brake block of high speed train and preparation method thereof |
| CN106351993A (en) * | 2016-08-29 | 2017-01-25 | 贵州新安航空机械有限责任公司 | Powder metallurgy brake lining for high speed train and preparing method thereof |
| US20200038959A1 (en) * | 2017-04-07 | 2020-02-06 | Nippon Steel Corporation | Sintered friction material |
| CN106979267A (en) * | 2017-05-16 | 2017-07-25 | 北京瑞斯福高新科技股份有限公司 | A kind of high-speed train powder metallurgy brake pad brake pad and preparation method |
| CN110257739A (en) * | 2019-06-21 | 2019-09-20 | 山东金麒麟股份有限公司 | A kind of preparation method of Environment protection type friction material and brake lining and brake lining |
| CN111779781A (en) * | 2020-07-08 | 2020-10-16 | 北京浦然轨道交通科技股份有限公司 | Brake pad and manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李继山等: "动车组粉末冶金闸片研制", 《中国铁道科学》 * |
| 盛欢等: "高速列车制动盘材料的研究现状与展望", 《机械工程材料》 * |
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Application publication date: 20210330 |
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