Friction layer running in a medium

A friction layer and friction component technology, applied in friction linings, mechanical equipment, etc., can solve problems such as oil removal, time impact of switching process, and shortened synchronization

Inactive Publication Date: 2007-08-15
DIEHL METAL STIFTUNG & CO KG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this has the disadvantage that, in the case of axial grooves, the oil scraping edges of the groove are arranged perpendicular to the direction of movement, so that the oil is carried away less quickly, which in turn has a negative impact on synchronicity and on shortening the switching process time. negative impact

Method used

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  • Friction layer running in a medium
  • Friction layer running in a medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Materials

[0034] Powder: - Iron Oxide Powder (Fe 3 o 4 ), mass 8g,

[0035] - powder, the composition is 30% Mo, 9% Cr, 2.5% Si, the rest is Fe;

[0036] Mass 2g,

[0037] Binder: 2.5% aqueous solution of polyvinylpyrrolidone, volume 16ml.

[0038] 2. Mix the ingredients

[0039] The ingredients were mixed with a mixer for 10 minutes.

[0040]3. Coating

[0041] The mixture is atomized with compressed air and sprayed onto the inner cone of the rotating steel synchronizer ring. The spray thickness is 550 μm. After a drying time of about 5 minutes, the coating has a high green sand strength, which allows good handling of the rings.

[0042] 4. Binder removal, sintering and alignment

[0043] The debinder and sintering process can be performed in one step in the same furnace under hydrogen atmosphere. For this purpose, the furnace is heated at a heating rate of 5 K / min. The debinding process starts at about 300°C and ends at 600°C. The sintering process i...

Embodiment 2

[0061] 1. Materials

[0062] Powder: - Iron Oxide Powder (Fe 3 o 4 ), mass 8.2g

[0063] - graphite powder, mass 1.8g,

[0064] Binder: 2.5% aqueous solution of polyvinylpyrrolidone, volume 16ml.

[0065] 2. Mix the ingredients

[0066] The ingredients were mixed with a mixer for 10 minutes.

[0067] 3. Coating

[0068] The mixture is atomized with compressed air and sprayed onto the inner cone of the rotating steel synchronizer ring. The spray thickness is 700 μm. After a drying time of about 8 minutes, the sprayed coating has a high green sand strength, which allows good handling of the rings.

[0069] 4. Binder removal, sintering and alignment

[0070] The binder removal and sintering processes can be performed in one step in the same furnace under a hydrogen atmosphere. For this purpose, the furnace is heated at a heating rate of 5 K / min. The binder removal process starts at about 300°C and ends at 600°C. The sintering process takes place in the temperature ran...

Embodiment 3

[0087] 1. Materials

[0088] Powder: - copper oxide powder (CuO), mass 8.6g

[0089] - Zinc powder, mass 0.58g

[0090] - Graphite powder, mass 0.82g

[0091] Binder: 2.5% aqueous solution of polyvinylpyrrolidone, volume 16ml.

[0092] 2. Mix the ingredients

[0093] The ingredients were mixed with a mixer for 10 minutes.

[0094] 3. Coating

[0095] The mixture is atomized with compressed air and sprayed onto the inner cone of the rotating steel synchronizer ring. The spray thickness is 680 μm. After a drying time of about 8 minutes, the sprayed coating has a high green sand strength, which allows good handling of the rings.

[0096] 4. Binder Removal, Sintering and Calibration

[0097] The binder removal and sintering processes can be performed in one step in the same furnace under a hydrogen atmosphere. For this purpose, the furnace is heated at a heating rate of 5 K / min. The binder removal process starts at about 300°C and ends at 600°C. The sintering process ta...

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Abstract

The invention relates to a friction layer for two opposing friction pieces which may be brought together and apart and which also circulate. At least one friction piece comprises a friction layer rigidly arranged on a support and a medium is found between the friction layer and the corresponding counterpiece to the friction piece. The material components for the material composition of the friction layer made from composite material, further additives and the binding composition of the above, are selected such that the material composition and hence the friction layer have considerable shrinkage properties caused by the heat treatment during the production thereof and shrinkage relative to the material of the support for the friction layer. As a result of the shrinkage process during the heat treatment, a network structure of irregularly distributed, directly interconnected channel-like recesses is embodied in the whole friction layer.

Description

technical field [0001] The invention relates to a friction layer for two friction parts facing each other, which can move towards each other and also move away from each other, and which can rotate in the above conditions, wherein at least one friction part comprises a Friction layer rigidly arranged on a carrier. Background technique [0002] The technical field of application of the invention is the frictional force transmission between two opposing rotating parts between which there is a fluid medium, for example in the form of oil. These friction layers are used, for example, on a carrier formed as a synchronizer ring, or in the case of clutch linings, brakes, bearing housings and the like. Synchronizing rings made of sintered steel are used, inter alia, for mechanical reasons in different types of vehicles. Synchronizing rings made of sintered steel are, on the one hand, unsuitable as a friction material due to the steel cone, so sintered steel synchronizing rings mus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02F16D69/00
CPCF16D69/025F16D2069/004F16D69/02F16D69/027
Inventor 弗里德里希·格布哈特迈因拉德·霍尔德里德洛塔尔·施奈德贡纳尔·瓦尔特托马斯·魏斯格贝尔
Owner DIEHL METAL STIFTUNG & CO KG
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