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Composite pin for connecting hole of disc brake gasket and producing method of composite pin

A disc brake and connecting hole technology, applied in friction linings, mechanical equipment, etc., can solve the problem of not being able to play shear resistance, and achieve the effect of improving shear resistance, increasing bonding strength, and increasing specific surface area.

Inactive Publication Date: 2011-06-01
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty of the process, the rock wool currently used in the brake lining is chopped rock wool, and during the lining forming process, it will be perpendicular to the forming pressure direction and distributed parallel to the friction shearing surface, which cannot play an effective role. Anti-shear effect
However, continuous fiber rock wool is used as a reinforcing material to make high-strength pins, so that the rock wool in the pins is perpendicular to the friction shear plane, and there is no patent or research report for the method of connecting the steel back and the friction block.

Method used

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  • Composite pin for connecting hole of disc brake gasket and producing method of composite pin
  • Composite pin for connecting hole of disc brake gasket and producing method of composite pin
  • Composite pin for connecting hole of disc brake gasket and producing method of composite pin

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1-Figure 4 Shown, a kind of preparation method for the composite pin of disc brake lining connection hole, it comprises the steps:

[0032] 1) Preparation of premixed slurry:

[0033] Take thermosetting phenolic resin (liquid, solid content 45%) 44Kg, nitrile rubber (latex, solid content 30%) 7Kg, graphite powder 16Kg, coke powder 16Kg, zircon sand powder 8Kg, barium sulfate 38Kg, add kneader Inside, stir and knead evenly to make a premixed slurry and set aside;

[0034] 2) 99.9Kg of basalt continuous fiber (average diameter 15 microns) rock wool is prefabricated into a rock wool thread with a diameter of about 1mm, immersed in the premixed slurry, so that the premixed slurry is evenly coated on the surface of the rock wool thread, every The premixed slurry coated on the surface of a kilogram of rock wool thread is 1000 grams, and the continuous rock wool thread impregnated with the premixed slurry is obtained;

[0035] 3) Merge 40 strands of continuo...

Embodiment 2

[0051] A preparation method for a composite pin used for a disc brake lining connecting hole, which comprises the following steps:

[0052] 1) Preparation of premixed slurry:

[0053] Take by weighing thermosetting phenolic resin (liquid, solid content 35%) 28.5Kg, nitrile rubber (latex, solid content 40%) 5Kg, graphite powder 7Kg, coke powder 7Kg, zircon sand powder 4Kg, add in the kneader, stir Knead evenly to make a premixed slurry and set aside;

[0054] 2) 41Kg diabase continuous fiber rock wool (average diameter 20 microns) is prefabricated into a rock wool thread with a diameter of about 1 mm, immersed in the premixed slurry, so that the premixed slurry is evenly coated on the surface of the rock wool thread, The premixed slurry coated on the surface of a kilogram of rock wool thread is 740 grams, and the continuous rock wool thread impregnated with the premixed slurry is obtained;

[0055] 3) Merge 40 strands of continuous rock wool threads impregnated with the premi...

Embodiment 3

[0060] A preparation method for a composite pin used for a disc brake lining connecting hole, which comprises the following steps:

[0061] 1) Preparation of premixed slurry: take by weighing thermosetting phenolic resin (liquid, solid content 45%) 43Kg, nitrile rubber (latex, solid content 30%) 7.5Kg, graphite powder 12Kg, coke powder 12Kg, zircon sand Powder 8Kg, add in the kneader, stir and knead evenly, make premixed slurry, set aside;

[0062] 2) 86Kg of basalt continuous fiber rock wool (average diameter 20 microns) is prefabricated into a rock wool thread with a diameter of about 1mm, immersed in the premixed slurry, so that the premixed slurry is evenly coated on the surface of the rock wool thread, per kilogram The premixed slurry coated on the surface of the rock wool thread is 650 grams, and the continuous rock wool thread impregnated with the premixed slurry is obtained;

[0063] 3) Merge 40 strands of continuous rock wool threads impregnated with the premixed slu...

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Abstract

The invention relates to a composite pin for connecting holes of disc brake gaskets and a producing method of the composite pin, wherein the composite pin for the connecting hole of the disc brake gasket is characterized in that the composite pin is produced by soaking pre-mixing slurry by rock wool threads, wherein the weight of the pre-mixing slurry covered on the surface of each kilogram of the rock wool threads is 650 to 1000g; the rock wool threads are prepared from continuous fiber rock wool; the pre-mixing slurry is prepared by mixing thermosetting phenolic resin, nitrile rubber, graphite powder, coke powder, zircon sand powder and barium sulfate; the parts by weight of the raw materials are: 22-43 parts of thermosetting phenolic resin, 3.3- 7.5 parts of nitrile rubber, 7- 12 parts of graphite powder, 7-12 parts of coke power, 4-8 parts of zircon sand powder and 0- 20 parts of barium sulfate, wherein the thermosetting phenolic resin is the liquid with 35 - 45 wt% of solid content; and the nitrile rubber is latex with solid content of 30-40 wt%. The composite pin can increase the combining strength of friction blocks and steel back of the gaskets of the disc brake, and improve the shear resistance of the disc brake without harmful effect on the friction and wear properties.

Description

technical field [0001] The invention relates to a composite pin used for connecting holes of disc brake linings and a preparation method thereof. Background technique [0002] Disc brake linings are widely used in the braking systems of cars, buses and other vehicles. It has the advantages of high temperature resistance, stable braking performance, low noise and convenient replacement. During the braking process, the brake lining needs to bear the shear force from the friction disc, which is transmitted from the friction block to the steel back of the lining. If the bonding strength between the friction block and the steel back is too low, it may The friction block and the steel back are separated under high shear strength, resulting in brake failure and safety accidents. Therefore, it is generally required that the shear strength of the disc brake lining is not less than 0.4MPa. [0003] In the disc brake lining, the steel back of the lining and the friction block are bon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/04C08L61/06C08L9/04C08K3/04C08K3/30
Inventor 吴耀庆侯书恩靳洪允
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)