PL446740A1 - Method of obtaining a composite friction layer in brake pads, especially in suspended railways - Google Patents
Method of obtaining a composite friction layer in brake pads, especially in suspended railwaysInfo
- Publication number
- PL446740A1 PL446740A1 PL446740A PL44674023A PL446740A1 PL 446740 A1 PL446740 A1 PL 446740A1 PL 446740 A PL446740 A PL 446740A PL 44674023 A PL44674023 A PL 44674023A PL 446740 A1 PL446740 A1 PL 446740A1
- Authority
- PL
- Poland
- Prior art keywords
- friction layer
- obtaining
- brake pads
- hpa
- composite friction
- Prior art date
Links
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
- Powder Metallurgy (AREA)
Abstract
Przedmiotem zgłoszenia jest sposób otrzymywania kompozytowej warstwy ciernej w klockach hamulcowych, zwłaszcza kolejek podwieszanych, który polega na tym, że mieszaninę zawierającą od 20% do 35% wag. miedzi elektrolitycznej o wielkości cząstek ziarna od 0,045 mm do 0,25 mm oraz od 65% do 80% wag. węglików spiekanych o wielkości ziarna do 1 mm, przy czym zawartość ziaren ≤ 0,3 mm nie może być mniejsza, niż 40%, umieszcza się na podkładzie stalowym korpusu klocka z wykorzystaniem kształtki ceramicznej lub pierścienia żeliwnego, następnie zagęszcza poprzez docisk lub przetwarza metodami prasowania, tak przygotowaną warstwę cierną umieszcza się w piecu próżniowym, proces prowadzi się przy ciśnieniu od 6*10-3 [hPa] do 10-2 [hPa], wygrzewa w temperaturze od 1000°C do 1200°C, korzystnie 1080°C z prędkością 10°C/min do 60°C/min, w czasie od 40 minut do 1 h na każde 20 mm przekroju stalowego korpusu klocka, po czym tak wygrzany wsad dogrzewa się od 1100°C do 1140°C ± 20°C do uzyskania pełnego przetopu, chłodzi do temperatury pokojowej w atmosferze ochronnej gazu obojętnego.The subject of the application is a method for obtaining a composite friction layer in brake pads, especially in suspended railways, which comprises adding a mixture containing from 20% to 35% by weight of electrolytic copper with a grain particle size of 0.045 mm to 0.25 mm and from 65% to 80% by weight of sintered carbides with a grain size of up to 1 mm, where the content of grains ≤ 0.3 mm cannot be less than 40%, are placed on a steel backing of the block body using a ceramic shape or a cast iron ring, then compacted by pressing or processed by pressing methods, the friction layer thus prepared is placed in a vacuum furnace, the process is carried out at a pressure of 6*10-3 [hPa] to 10-2 [hPa], heated at a temperature of 1000°C to 1200°C, preferably 1080°C at a speed of 10°C/min to 60°C/min, for 40 minutes to 1 hour for every 20 mm of the steel cross-section of the block body, after which the charge so heated is reheated from 1100°C to 1140°C ± 20°C until full melting is achieved, cooled to a temperature room temperature in a protective atmosphere of inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL446740A PL446740A1 (en) | 2023-11-16 | 2023-11-16 | Method of obtaining a composite friction layer in brake pads, especially in suspended railways |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL446740A PL446740A1 (en) | 2023-11-16 | 2023-11-16 | Method of obtaining a composite friction layer in brake pads, especially in suspended railways |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL446740A1 true PL446740A1 (en) | 2025-05-19 |
Family
ID=95713422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL446740A PL446740A1 (en) | 2023-11-16 | 2023-11-16 | Method of obtaining a composite friction layer in brake pads, especially in suspended railways |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL446740A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2048405B1 (en) * | 2007-10-10 | 2011-05-04 | Miba Frictec GmbH | Sinter brake lining |
| CN115612947A (en) * | 2022-10-28 | 2023-01-17 | 陕西省机械研究院有限公司 | Powder metallurgy friction block and preparation method thereof |
| CN117049884A (en) * | 2023-07-19 | 2023-11-14 | 燕山大学 | TiC-based ceramic composite material and preparation method thereof |
-
2023
- 2023-11-16 PL PL446740A patent/PL446740A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2048405B1 (en) * | 2007-10-10 | 2011-05-04 | Miba Frictec GmbH | Sinter brake lining |
| CN115612947A (en) * | 2022-10-28 | 2023-01-17 | 陕西省机械研究院有限公司 | Powder metallurgy friction block and preparation method thereof |
| CN117049884A (en) * | 2023-07-19 | 2023-11-14 | 燕山大学 | TiC-based ceramic composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| X.Z. ZHANG ET AL.: "December 2016, Journal of Materials Engineering and Performance 26(2); DOI:10.1007/s11665-016-2424-6", VACUUM BRAZING OF WC-8CO CEMENTED CARBIDES TO CARBON STEEL USING PURE CU AND AG-28CU AS FILLER METAL * |
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