EP2946855A1 - Sliding plate and floor plate for turnout - Google Patents
Sliding plate and floor plate for turnout Download PDFInfo
- Publication number
- EP2946855A1 EP2946855A1 EP14741082.3A EP14741082A EP2946855A1 EP 2946855 A1 EP2946855 A1 EP 2946855A1 EP 14741082 A EP14741082 A EP 14741082A EP 2946855 A1 EP2946855 A1 EP 2946855A1
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- Prior art keywords
- metal
- sliding plate
- backing material
- plate
- sintered layer
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- 239000002184 metal Substances 0.000 claims abstract description 82
- 229910052751 metal Inorganic materials 0.000 claims abstract description 82
- 239000000843 powder Substances 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 66
- 230000001050 lubricating effect Effects 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims description 37
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 12
- 239000010687 lubricating oil Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000004813 Perfluoroalkoxy alkane Substances 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 4
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920002312 polyamide-imide Polymers 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 24
- 239000010959 steel Substances 0.000 abstract description 24
- 238000005245 sintering Methods 0.000 abstract description 19
- 238000005461 lubrication Methods 0.000 abstract description 12
- 229910045601 alloy Inorganic materials 0.000 abstract description 11
- 239000000956 alloy Substances 0.000 abstract description 11
- 238000005096 rolling process Methods 0.000 abstract description 9
- 238000005470 impregnation Methods 0.000 abstract description 6
- 238000004080 punching Methods 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 2
- 238000007906 compression Methods 0.000 abstract 2
- 235000012054 meals Nutrition 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 11
- 239000011812 mixed powder Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 238000005304 joining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/26—Lubricating of switches
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/041—Mixtures of base-materials and additives the additives being macromolecular compounds only
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/02—Tongues; Associated constructions
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Railway Tracks (AREA)
- Powder Metallurgy (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
- The present invention relates to a sliding plate, and particularly to a sliding plate suitable for slidably supporting a tongue rail and to a self-lubrication type floor plate for turnout, which uses the sliding plate.
-
Patent Literature 1 discloses a floor plate for turnout (hereinafter, also referred to as turnout floor plate), which can maintain sliding performance stably for a long period of time, thereby allowing reduction in the frequency of maintenance and inspection work. This turnout floor plate comprises: a substrate for placing and fixing a stock rail on it; and a sliding plate, which is fixed on the substrate so that a tongue rail is placed on the sliding plate and supported slidably. - The sliding plate comprises: a backing material, which is a steel plate having an upper surface in which a plurality of recessed portions and projected portions are formed; and a metal-powder sintered layer formed on the upper surface of the backing material. The metal-powder sintered layer is formed on the upper surface of the backing material as follows. Alloy powder for sintering is dispersed on the upper surface of the backing material, and is sintered, and then is rolled. Thereafter, a lubricating resin having superior weather resistance such aspolytetrafluoroethylene (PTFE), perfluoroalkoxyalkane (PFA), polyamide-imide (PAI), polyimide (PI), or the like is heated and melted so as to melt into the metal-powder sintered layer.
- The metal-powder sintered layer formed on the projected portions of the upper surface of the backing material is compressed under high pressure, and therefore has a higher sintered density and is superior in impact resistance, load bearing, and abrasion resistance. On the other hand, the metal-powder sintered layer formed on the recessed portions of the backing material is compressed under lower pressure in comparison with the metal-powder sintered layer on the projected portions, and therefore has a lower sintered density and a higher impregnation rate of the lubricating resin, and is superior in lubrication property.
- Patent Literature 1: Japanese Unexamined Patent Application Laid-Open No.
Hei9-221701 - Usually the turnout floor plate described in
Patent Literature 1 uses checkered steel plate as the backing material of the sliding plate. Checkered steel plate is sold as ready-made product by a plurality of manufacturers. However, ready-made checkered steel plate is limited in the number of types of plate thickness. Thus, in many cases of producing the sliding plate, it is difficult to procure checkered steel plate having the thickness corresponding to the thickness of the sliding plate to produce, among ready-made products of checkered steel plate. As a result, it is necessary to adjust the thickness of the metal-powder sintered layer depending on the thickness of the sliding plate to produce. Accordingly, it is necessary to change the sintering conditions, rolling conditions, and the like for each thickness of the sliding plate to be produced, and thus management of the thickness of the sliding plate becomes troublesome. - Further, since checkered steel plate is originally intended to be used for anti-slip purpose in floor surface, passageway, stairway, and the like, only a few kinds of checker patterns are available for ready-made checkered steel plate. Thus, in the case where ready-made checkered steel plate is used for producing the sliding plate, it is not possible to change flexibly the ratio between the portions of the high sintered density (i.e. the portions superior in impact resistance, load bearing, and abrasion resistance) and the portions of the low sintered density (i.e. the portions that are higher in impregnation rate of the lubricating resin and thus superior in lubrication property) in the metal-powder sintered layer formed on the checkered steel plate. Thus, it is also difficult to adj ust the performance of the sliding plate, considering which is more important the impact resistance, the load bearing and the abrasion resistance or the lubrication property.
- Although it is possible to solve the above problem by using custom-ordered checkered steel plate of the desired sheet thickness and the desired checker pattern, this largely increases the manufacturing cost.
- The present invention has been made considering the above situation. An object of the present invention is to provide a sliding plate whose thickness and performance can be easily adjusted and a turnout floor plate, which uses this sliding plate.
- To solve the above problems, for example in a sliding plate of the present invention, a metal plate having mesh structure such as perforated metal, expanded metal, or a metal plate with recessed portions and projected portions formed on its surface is placed as a reinforced member on a backing material such as a steel plate; sintering alloy powder is sprinkled on the backing material on which the reinforced member is placed, and the backing material on which the reinforced member is placed and the sintering alloy powder is sprinkled is sintered and rolled to form a metal-powder sintered layer. Thereafter, the metal-powder sintered layer is impregnated with at least one of a lubricating resin and lubricating oil.
- For example, a sliding plate of the present invention comprises:
- a backing material;
- a reinforcing member, which is placed on one surface of the backing material and forms recessed portions and projected portions in its surface; and
- a metal-powder sintered layer, which is formed to cover at least the recessed portions formed by the reinforcing member on the one surface of the backing material and is impregnated with at least one of a lubricating resin and lubricating oil.
- Further, a turnout floor plate of the present invention comprises:
- a substrate for placing and fixing a stock rail on one surface of the substrate;
- the above-mentioned sliding plate, which is fixed on the substrate and supports a tongue rail slidably on a side of one surface of the substrate.
- According to the present invention, the metal-powder sintered layer, which covers at least the recessed portions between the recessed portions and the projected portions formed by the reinforcing member in the upper surface of the backing material, is formed on the side of the upper surface of the backing material on which the reinforcing member is placed. As for the metal-powder sintered layer formed on the projected portions between the recessed portions and the projected portions, the metal-powder sintered layer is compressed under high pressure, and thus has a higher sintered density and is superior in impact resistance, load bearing, and abrasion resistance. On the other hand, the metal-powder sintered layer formed on the recessed portions between the recessed portions and the projected portions is compressed under lower pressure in comparison with the metal-powder sintered layer formed on the projected portions. Thus, the metal-powder sintered layer formed on the recessed portions has a lower sintered density and a higher impregnation rate of at least one of the lubricating resin and the lubricating oil, and is superior in lubrication property. As the backing material, the present invention uses steel plate or the like, for which there are ready-made products of more various plate thicknesses in comparison with checkered steel plate, so that sliding plates of various thickness can be realized without changing the thickness of the metal-powder sintered layer, making it easy to adjust the thickness of the sliding plate. Further, according to the present invention, by using a metal plate having mesh structure, such as perforated metal, expanded metal, or the like, as the reinforcing member, the shapes and arrangement pattern of the holes of the mesh can be changed easily. Accordingly, it is possible to change flexibly the ratio between the high sintered density area and the low sintered density area of the metal-powder sintered layer, making it easy to adjust the performance of the sliding plate.
-
-
Fig. 1(A) is a front view showing aturnout floor plate 1 according to one embodiment of the present invention, andFig. 1 (B) is a top view showing theturnout floor plate 1 according to the one embodiment of the present invention; and -
Fig. 2(A) is a top view showing asliding plate 3, andFig. 2 (B) is an A-A cross-section of thesliding plate 3 shown inFig. 2(A) . - In the following, an embodiment of the present invention will be described referring to the accompanying drawings.
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Fig. 1(A) is a front view showing aturnout floor plate 1 according to the present embodiment. AndFig. 1 (B) is a top view showing theturnout floor plate 1 according to the present embodiment. In these figures, astock rail 4, a tongue rail 5, and arail press 6 are shown in dotted lines so that disposition of these parts on theturnout floor plate 1 can be easily grasped. - The
turnout floor plate 1 of the present embodiment is used as a self-lubrication type floor plate at a point where a turnout for railroad line is installed. As shown in the figures, theturnout floor plate 1 of the present embodiment comprises: asubstrate 2 for placing and fixing thestock rail 4 on one surface (i.e. upper surface) 20; and asliding plate 3, which is fixed on theupper surface 20 of thesubstrate 2 and used for placing and supporting the tongue rail 5 slidably on the side of theupper surface 20 of thesubstrate 2. - In the
upper surface 20 of thesubstrate 2, are formed two parallel grooves (a stockrail fixing groove 24 and a sliding plate fixing groove 25) running from oneside surface 22 to theother side surface 23 along to the lengthwise direction L. The stockrail fixing groove 24 receives thebase 41 of thestock rail 4. The slidingplate fixing groove 25 accommodates thesliding plate 3 such that anupper surface 30 of thesliding plate 3 is exposed in theupper surface 20 of thesubstrate 2. - Further, in the
upper surface 20 of thesubstrate 2, a railpress fixing groove 26 is formed on the opposite side of the stockrail fixing groove 24 for the slidingplate fixing groove 25. The railpress fixing groove 26 runs from the oneside surface 22 of thesubstrate 2 to theother side surface 23, obliquely to the stockrail fixing groove 24. In addition, in thesubstrate 2, is formed abolt support hole 27 which passes through theupper surface 20 of thesubstrate 2 and the other surface (i.e. lower surface) 21 of thesubstrate 2. Thestock rail 4 is placed on thebottom surface 242 of the stockrail fixing groove 24. Therail press 6 is in contact with thebase 41 of thestock rail 4 on the side opposite to the side on which the tongue rail 5 is placed, for thestock rail 4. And ahook portion 61 of therail press 6 is engaged with the railpress fixing groove 26. In this state, when the rail press 6 slides along the railpress fixing groove 26 in the direction D of narrowing the distance between the railpress fixing groove 26 and the stockrail fixing groove 24, therail press 6 presses thebase 41 of thestock rail 4 against one side surface 241 (the side surface on the side of the sliding plate fixing groove 25) of the stockrail fixing groove 24 by the wedge effect, while therail press 6 supports thestem 42 of thestock rail 4 from the side opposite to the side onwhich the tongue rail 5 is placed. This prevents a fall of thestock rail 4. When, in this state, therail press 6 is bolted to thesubstrate 2 by using thebolt support hole 27, thestock rail 4 is fixed strongly to thesubstrate 2. - At each
widthwise end portion 28 of thesubstrate 2, are formed a plurality of bolt holes 29 each running through theupper surface 20 of thesubstrate 2 to thelower surface 21 of thesubstrate 2, in order to fix theturnout floor plate 1 at the installation point. - The sliding
plate 3 has the length W2 narrower than the length W1 of thesubstrate 2. Accordingly, when the slidingplate 3 is accommodated in the slidingplate fixing groove 25 of thesubstrate 2, thebottom surface 251 of the slidingplate fixing groove 25 is partly exposed on the sides of both the side surfaces 22 and 23 of thesubstrate 2. By using these exposed parts, the slidingplate 3 is fixed to thesubstrate 2 by fillet welding. -
Fig. 2(A) is a top view showing the slidingplate 3, andFig. 2(B) is an A-A cross-section of the slidingplate 3 shown inFig. 2(A) . - As shown in the figures, the sliding
plate 3 has laminated structure. The slidingplate 3 comprises: a backing material 31 made of, for example, steel plate; aperforated metal 32 placed on the backing material 31; a metal-powder sintered layer 33 formed on the side of theupper surface 310 of the backing material 31, to cover theperforated metal 32. - As the backing material 31, is used metal plate available in many thicknesses t1 such as, for example, ready-made sheet steel. For example, SPHC (hot-rolled soft sheet steel JIS G3131) can be mentioned as such sheet steel.
- The
perforated metal 32 is a metal plate having mesh structure made by punching a metal plate by a dedicated punch press. Theperforated metal 32 is satisfactorily held on the backing material 31 when the metal-powder sintered layer 33 (which covers at least the recessed portions between the recessed portions and projected portions formed by placing theperforated metal 32 on the backing material 31) is joined to the backing material 31.Fig. 2 shows an example of using the perforatedmetal 32 in which a plurality of diamond shapes are punched out into uniform arrangement. However, shape, size, and arrangement pattern of the holes of theperforated metal 32 are not limited to those shown inFig. 2 , as long as theperforated metal 32 has the aperture ratio corresponding to the ratio between the high sintered density area (i.e. the portions superior in impact resistance, load bearing, and abrasion resistance) and the low sintered density area (i.e. the portions that are higher in impregnation rate of the lubricating resin and thus superior in lubrication property) in the below-described metal-powder sintered layer 33. For example, the holes may be circular, or the holes of different sizes may be formed. Or, a plurality of holes may be arranged into areas having different aperture ratios. - The metal-
powder sintered layer 33 is formed by sintering of mixed powder obtained by mixing sintering alloy powder with solid lubricant such as graphite, PTFE, molybdenum disulfide (MoS2) or the like. Here, for the mixed powder, may be used various materials, including bronze type material containing copper, tin, a solid lubricant, and the like. Among others, a mixed powder containing 4 - 10 wt. % tin, 10 - 40 wt. % nickel, 0.1 - 4 wt. % phosphorus, 3 - 10 wt. % graphite, and the balance copper can realize the metal-powder sintered layer 33 giving the best sliding performance. - The metal-
powder sintered layer 33 is impregnated with a lubricating resin superior in weather resistance. Examples of such a lubricating resin are PTFE, PFA, PAI, PI, PE (polyethylene), and PP (polypropylene). Also the lubricating resin may contain dispersed solid lubricant such as graphite, PTFE, molybdenum disulfide, or the like. - The sliding
plate 3 of the above-described structure is produced as follows. First, the backing material 31 and theperforated metal 32 are each subjected to leveler processing so that the backing material 31 and theperforated metal 32 are flattened. Then, theperforated metal 32 is placed on the backing material 31; the above-described mixed powder is sprinkled to a prescribed thickness on the side of theupper surface 310 of theperforated metal 32; and primary sintering is performed to form an intermediate of the metal-powder sintered layer 33. Next, the backing material 31 provided with the intermediate of the metal-powder sintered layer 33 and theperforated metal 32 is subjected to rolling. At that time, there is a possibility that a defect such as a crack occurs in the intermediate of the metal-powder sintered layer 33. Therefore, the intermediate of the metal-powder sintered layer 33 is further subjected to secondary sintering to eliminate the defect such as crack. By this, a completed body of the metal-powder sintered layer 33 is formed. The completed body of the metal-powder has strength required to prevent a defect such as a crack due to external force at the time of use, has joint strength required to strongly join the backing material 31 and theperforated metal 32 as a reinforcing member, and has hardness required to good abrasion resistance. Next, the backing material 31 provided with the completed body of the metal-powder sintered layer 33 and theperforated metal 32 is subjected to rolling, and thereafter the completed body of the metal-powder sintered layer 33 is subjected to leveler processing to obtain the uniform thickness t2 of the completed body of the metal-powder sintered layer 33. Then, the slidingplate 3 with desired sliding performance is produced by heating and melting the above-mentioned lubricating resin to impregnate the completed body of the metal-powder sintered layer 33 with the lubricating resin. - Hereinabove, one embodiment of the present invention has been described.
- According to the present embodiment, the metal-
powder sintered layer 33 formed on themetal part 321 of theperforated metal 32 is compressed under high pressure as a result of the rolling and the leveler processing. Thus, the metal-powder sintered layer 33 formed on this part has a higher sintered density and is superior in impact resistance, load bearing, and abrasion resistance (the high sintered density area). On the other hand, as a result of the rolling and the leveler processing, the metal-powder sintered layer 33 formed in the holes (voids) 322 of theperforated metal 32 is compressed under lower pressure in comparison with the metal-powder sintered layer 33 formed on themetal part 321 of theperforated metal 32. Thus, the metal-powder sintered layer 33 formed in this part has a lower sintered density and thus a higher impregnation rate of the lubricating resin, and is accordingly superior in lubrication property (the low sintered density area). Further, the metal-powder sintered layer 33 contains the dispersed solid lubricant such as graphite. In this way, the metal-powder sintered layer 33 is a mixture of the high sintered density area (which is superior in impact resistance, load bearing, and abrasion resistance) and the low sintered density area (which is superior in lubrication property). Accordingly, plastic deformation or the like does not occur due to impact load applied to the tongue rail 5 at the time of train passing, and the tongue rail 5 can be slidably supported stably over a long period of time. - Here, in the present embodiment, as the backing material 31, it is possible to use ready-made sheet steel available in more types of sheet thickness t1 in comparison with checkered steel plate. Accordingly, as the backing material 31, it is possible to use sheet steel whose thickness t1 corresponds to the thickness of the sliding
plate 3 to be produced, without changing the thickness t2 of the metal-powder sintered layer 33. As a result, it is possible to realize the slidingplates 3 of various thicknesses without changing manufacturing conditions such as sintering conditions, rolling conditions, and the like. Thus, it is easy to adjust the thickness of the slidingplate 3. - Further, in the present embodiment, the
perforated metal 32 placed on the backing material 31 forms the high sintered density area and the low sintered density area of the metal-powder sintered layer 33. By changing shapes, sizes, and arrangement pattern of the holes (voids) 322 of theperforated metal 32, it is possible to change flexibly the ratio between the high sintered density area and the low sintered density area of the metal-powder sintered layer 33. Accordingly, it is easy to adjust the performance of the slidingplate 3. For example, by preparing in advance a plurality of types ofperforated metal 32 which are different in shapes, sizes, and arrangement patterns of the holes, it is possible to realize the slidingplate 3 of desired performance only by changing theperforated metal 32 to one which has the aperture ratio corresponding to the ratio between the high sintered density area and the low sintered density area of the metal-powder sintered layer 33, while using the common backing material 31. - Further, according to the present embodiment, the performance of the sliding
plate 3 can be adjusted also by changing the material of theperforated metal 32. For example, by using sheet steel SS400 (rolled steel for general structure JIS G3101) or the like as the material of theperforated metal 32, it is possible to produce the slidingplate 3 emphasizing impact resistance, load bearing, and abrasion resistance. On the other hand, by using bronze alloy type metal plate as the material of theperforated metal 32, it is possible to produce the slidingplate 3 emphasizing lubrication property. - Thus, according to the present embodiment, it is possible to provide the sliding
plate 3 whose thickness and performance can be easily adjusted and to provide theturnout floor plate 1 using that slidingplate 3. - Although, in the sliding
plate 3 of the above-described embodiment, the whole area is covered with the metal-powder sintered layer 33, the present invention is not limited to this. It is sufficient that the metal-powder sintered layer 33 covers at least a part of theperforated metal 32. For example, the surface of themetal part 321 of theperforated metal 32 may be exposed in a state of being flush with the surface of the metal-powder sintered layer 33. By exposing the surface of themetal part 321 of theperforated metal 32 to be flush with the surface of the metal-powder sintered layer 33, it is possible to produce the slidingplate 3 further emphasizing impact resistances, load bearing, and abrasion resistance. - Further, in the sliding
plate 3 of the above-described embodiment, the metal-powder sintered layer 33 is impregnated with the lubricating resin. The metal-powder sintered layer 33, however, may be impregnated with lubricating oil instead of the lubricating resin or together with the lubricating resin. - Further, in the sliding
plate 3 of the above-described embodiment, theperforated metal 32 is placed on the backing material 31, and the mixed powder comprising the sintering alloy powder and the solid lubricant is sprinkled onto theperforated metal 32 and then sintering and rolling are performed to form the metal-powder sintered layer 33. The present invention, however, is not limited to this. The metal-powder sintered layer 33 may be formed by: sprinkling sintering alloy powder without containing solid lubricant onto the backing material 31; placing theperforated metal 32 on the backing material 31 on which the sintering alloy powder has been sprinkled; and sprinkling mixed powder comprising sintering alloy powder and solid lubricant onto theperforated metal 32, and then performing sintering and rolling. This can increase the joint strengths among the backing material 31, theperforated metal 32, and the metal-powder sintered layer 33. - Further, in the sliding
plate 3 of the above-described embodiment, theperforated metal 32 is placed on the backing material 31. The present invention, however, is not limited to this. It is sufficient for the present invention that a reinforcing member allowing formation of recessed and projected portions on the side of theupper surface 310 of the backing material 31 is placed on the backing material 31. For example, instead of theperforated metal 32, a metal plate having other mesh structure, such as expanded metal, may be used to form the high sintered density area and the low sintered density area. Here, the expanded metal means a metal plate having solid mesh structure of seamless mesh. - The shapes, sizes or arrangement patterns of the holes of the metal plate which has the mesh structure and is placed on the backing material 31 may be changed depending on locations on the backing material 31. Or, metal plates having respective types of mesh structure different in shapes, sizes or arrangement patterns may be used at different locations on the backing material 31 in order to change partially the ratio between the high sintered density area and the low sintered density area of the metal-
powder sintered layer 33 according to the performance required for the slidingplate 3. By this, it is possible to realize the slidingplate 3 which has different performances at the portions of the slidingplate 3 according to the required performances for those portions, for example, with the central portion emphasizing lubrication property and with the edge portion emphasizing impact resistance, load bearing, and abrasion resistance. - Further, as the reinforcing member which is placed on the backing material 31 and forms the recessed portions and projected portions on the side of the
upper surface 310 of the backing material 31, it is possible to use a metal plate with recessed portions and projected portions formed in the surface of the metal plate (i.e. a metal plate whose recessed portions are not penetrating through). In that case, it is possible to increase the area of contact between the reinforcing member and the backing material 31 and the area of contact between the reinforcing member and the metal-powder sintered layer 33. Thus, it is also possible to increase the respective joint strengths among the backing material 31, the reinforcing member, and the metal-powder sintered layer 33, in comparison with the case of using a metal plate having mesh structure such as perforated metal, expanded metal or the like as the reinforcing member. As a method of joining the reinforcing member and the backing material 31, can be mentioned, for example, a method of plating at least one of the reinforcing member and the backing material 31 with metal (copper, nickel, tin, brass, or the like) to realize diffusion joining, a method of joining by brazing, and a method of mechanical joining such as by screwing. - Or, it is possible to plate at least one of the backing material 31 and the reinforcing member with the same metal as metal used in the metal-
powder sintered layer 33. This can increase the joint strengths among the backing material 31, the reinforcing member, and the metal-powder sintered layer 33. For example, in the case of using bronze type sintering alloy powder for the metal-powder sintered layer 33, higher joint strength can be obtained by plating with copper. - Further, the sliding
plate 3 of the above-described embodiment uses the metal-powder sintered layer 33 that contains the dispersed solid lubricant. However, it is not necessary to disperse the solid lubricant, and it is possible to use the metal-powder sintered layer consisting of sintering alloy powder only. - Further, the above embodiment has been described taking an example where the sliding
plate 1 is used for theturnout floor plate 1. However, the slidingplate 3 can be used in various sliding applications such as a slide bearing. - The sliding plate of the present invention can be used in various sliding applications such as a turnout floor plate, a slide bearing, and the like.
-
- 1: turnout floor plate; 2: substrate; 3: sliding plate; 4: stock rail; 5: tongue rail; 6: rail press; 20: upper surface of the substrate; 21: lower surface of the substrate; 22: one side surface of the substrate, extending in the lengthwise direction of the substrate; 23: the other side surface of the substrate, extending in the lengthwise direction of the substrate; 24: stock rail fixing groove; 25: sliding plate fixing groove; 26: rail press fixing groove; 27: bolt support hole; 28: both end portions of the substrate; 29: bolt holes; 30: upper surface of the sliding plate; 31: backing material; 32: perforated metal; 33: metal-powder sintered layer; 41: base of the stock rail; 42: stem of the stock rail; 61: hook portion of the rail press; 241: side surface of the stock rail fixing groove; 242: bottom surface of the stock rail fixing groove; 251: bottom surface of the sliding plate fixing groove; 310: upper surface of the backing material; 321: metal part of the perforated metal; and 322 : void of the perforated metal.
Claims (8)
- A sliding plate comprising:a backing material;a reinforcing member, which is placed on one surface of the backing material and forms recessed portions and projected portions in its surface; anda metal-powder sintered layer, which is formed to cover at least the recessed portions formed by the reinforcing member on the one surface of the backing material and is impregnated with at least one of a lubricating resin and lubricating oil.
- A sliding plate of Claim 1, wherein:the reinforcing member is a metal plate having mesh structure.
- A sliding plate of Claim 2, wherein:the metal plate having the mesh structure is either expanded metal of perforated metal.
- A sliding plate of one of Claims 1 - 3, wherein:solid lubricant is dispersed in the metal-powder sintered layer.
- A sliding plate of Claim 4, wherein:the solid lubricant is not dispersed in the metal-powder sintered layer at a part intervening between the one surface of the backing material and a surface of the metal plate having the mesh structure on a side opposed to the backing material.
- A sliding plate of one of Claims 1 - 5, wherein:the lubricating resin is one of polytetrafluoroethylene, perfluoroalkoxyalkane, polyamide-imide, polyimide, polyethylene, and polypropylene.
- A sliding plate of one of Claims 1 - 6, wherein:solid lubricant is dispersed in the lubricating resin.
- A floor plate for turnout, comprising:a substrate for placing and fixing a stock rail on one surface of the substrate;a sliding plate of one of Claims 1 - 7, which is fixed on the substrate and supports a tongue rail slidably on a side of one surface of the substrate.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013005756A JP6141642B2 (en) | 2013-01-16 | 2013-01-16 | Sliding plate and floor plate for turnout |
PCT/JP2014/050443 WO2014112471A1 (en) | 2013-01-16 | 2014-01-14 | Sliding plate and floor plate for turnout |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2946855A1 true EP2946855A1 (en) | 2015-11-25 |
EP2946855A4 EP2946855A4 (en) | 2016-08-31 |
Family
ID=51209561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14741082.3A Withdrawn EP2946855A4 (en) | 2013-01-16 | 2014-01-14 | Sliding plate and floor plate for turnout |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150354145A1 (en) |
EP (1) | EP2946855A4 (en) |
JP (1) | JP6141642B2 (en) |
KR (1) | KR20150107771A (en) |
CN (1) | CN104994977A (en) |
WO (1) | WO2014112471A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU184722U1 (en) * | 2018-07-13 | 2018-11-06 | Общество с ограниченной ответственностью "Информационные технологии" (ООО "ИнфоТех") | AXIS OF THE MOBILE CONNECTION OF THE ARROW HEADSET OF THE ARROW ELECTRIC DRIVE |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101744064B1 (en) * | 2015-03-06 | 2017-06-09 | 주식회사 천경기업 | a mounting struture of LRT |
CN105803865B (en) * | 2016-05-17 | 2017-11-10 | 沈阳鼎然新材料有限公司 | It is a kind of to heat the compound slider bed platen of railway high speed track switch combined |
CN105887583B (en) * | 2016-05-17 | 2018-01-19 | 沈阳鼎然新材料有限公司 | A kind of compound slider bed platen of forging molding railway high speed track switch |
CN111957976B (en) * | 2020-07-06 | 2022-09-16 | 番禺得意精密电子工业有限公司 | Method for manufacturing composite board |
Family Cites Families (10)
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JP3024153B2 (en) * | 1990-02-07 | 2000-03-21 | オイレス工業株式会社 | Multi-layer sintered sliding member |
WO1995003126A1 (en) * | 1993-07-20 | 1995-02-02 | Maschinenfabrik Köppern Gmbh & Co. Kg | Roller presses, in particular for crushing strongly abrasive substances |
KR100322661B1 (en) * | 1994-05-23 | 2002-06-27 | 에구사 도시유키 | Resin composition for sliding member and sliding member manufactured therefrom |
CN2205042Y (en) * | 1994-07-14 | 1995-08-09 | 大连新兴喷涂技术开发公司 | Luminescent board |
JPH09221701A (en) * | 1996-02-16 | 1997-08-26 | Taiho Kogyo Co Ltd | Floor slab for points and crossing turnout |
JP3859344B2 (en) * | 1998-01-28 | 2006-12-20 | 株式会社小松製作所 | Sliding material, sliding member and method of manufacturing the sliding member |
JP3446809B2 (en) * | 1998-03-19 | 2003-09-16 | 株式会社小松製作所 | Multi-layer sintered sliding member and manufacturing method thereof |
KR101222882B1 (en) * | 2003-09-03 | 2013-01-17 | 가부시키가이샤 고마쓰 세이사쿠쇼 | Sintered sliding material, sliding member, connection device and device provided with sliding member |
CN100486834C (en) * | 2006-10-19 | 2009-05-13 | 杨连威 | Scooter made of whisker reinforced C-Al-Cu composite material and its making process |
CN101555725A (en) * | 2008-04-08 | 2009-10-14 | 杨德宁 | Three-dimensional antislip diamond and fabricating method thereof |
-
2013
- 2013-01-16 JP JP2013005756A patent/JP6141642B2/en active Active
-
2014
- 2014-01-14 EP EP14741082.3A patent/EP2946855A4/en not_active Withdrawn
- 2014-01-14 KR KR1020157020884A patent/KR20150107771A/en not_active Application Discontinuation
- 2014-01-14 WO PCT/JP2014/050443 patent/WO2014112471A1/en active Application Filing
- 2014-01-14 US US14/760,535 patent/US20150354145A1/en not_active Abandoned
- 2014-01-14 CN CN201480004338.2A patent/CN104994977A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU184722U1 (en) * | 2018-07-13 | 2018-11-06 | Общество с ограниченной ответственностью "Информационные технологии" (ООО "ИнфоТех") | AXIS OF THE MOBILE CONNECTION OF THE ARROW HEADSET OF THE ARROW ELECTRIC DRIVE |
Also Published As
Publication number | Publication date |
---|---|
JP6141642B2 (en) | 2017-06-07 |
CN104994977A (en) | 2015-10-21 |
EP2946855A4 (en) | 2016-08-31 |
JP2014136899A (en) | 2014-07-28 |
US20150354145A1 (en) | 2015-12-10 |
WO2014112471A1 (en) | 2014-07-24 |
KR20150107771A (en) | 2015-09-23 |
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