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A kind of iron-copper base powder alloy brake pad and preparation method thereof

A powder alloy and brake pad technology, which is applied in the field of iron-copper-based powder alloy brake materials and its preparation, can solve the problems of short service life, high cost of raw materials, low thermal conductivity, etc.

Inactive Publication Date: 2011-12-28
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of existing powder alloy brake pads, such as low thermal conductivity of the powder alloy material matrix, short service life, and high raw material cost, the present invention proposes an iron-copper-based powder alloy brake pad and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present embodiment is a kind of iron-copper base powder alloy brake pad, and the composition of described iron-copper base powder alloy brake pad is as shown in table 1:

[0019] Table 1 Weight ratio of iron-copper-based brake materials

[0020] component iron powder copper powder tin powder Molybdenum powder lead powder Silicon carbide Molybdenum disulfide graphite Granularity (mesh) -200 -200 300 300 -200 100 powder Scaly 80 Weight content (%) 38 38 3 2 5 4 1 9

[0021] The total amount of the components of the iron-copper-based powder alloy brake pad does not exceed 100%.

[0022] This embodiment also proposes a method for preparing an iron-copper-based powder alloy brake pad, and its specific process includes the following steps:

[0023] The first step is raw material pretreatment. The silicon carbide, molybdenum disulfide and graphite flakes were placed in an oven and dried ...

Embodiment 2

[0032] This embodiment is an iron-copper-based powder alloy brake pad, and the components of the iron-copper-based powder alloy brake pad are shown in Table 2:

[0033] Table 2 Weight ratio of iron-copper-based brake materials

[0034] component iron powder copper powder tin powder Molybdenum powder lead powder Silicon carbide Molybdenum disulfide graphite Granularity (mesh) -200 -200 300 300 -200 100 powder Scaly 80 Weight content (%) 30 44 6 1 3 3 2 11

[0035] The total amount of the components of the iron-copper-based powder alloy brake pad does not exceed 100%.

[0036] This embodiment also proposes a method for preparing an iron-copper-based powder alloy brake pad, and its specific process includes the following steps:

[0037] The first step is raw material pretreatment. The silicon carbide, molybdenum disulfide and graphite flakes were placed in an oven and dried at 120°C for 1 hour....

Embodiment 3

[0046] This embodiment is an iron-copper-based powder alloy brake pad. The components of the iron-copper-based powder alloy brake pad are shown in Table 3:

[0047] Table 3 Weight ratio of iron-copper-based brake materials

[0048] component iron powder copper powder tin powder Molybdenum powder lead powder Silicon carbide aluminum disulfide graphite Granularity (mesh) -200 -200 300 300 -200 100 powder Scaly 80 Weight content (%) 45 30 5 1.5 4 3.5 3 8

[0049] The total amount of the components of the iron-copper-based powder alloy brake pad does not exceed 100%.

[0050] This embodiment also proposes a method for preparing an iron-copper-based powder alloy brake pad, and its specific process includes the following steps:

[0051] The first step is raw material pretreatment. The silicon carbide, molybdenum disulfide and graphite flakes were placed in an oven and dried at 120°C for 1 hour. ...

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Abstract

The invention relates to an iron-copper-based powder alloy brake block and a preparation method thereof. The powder material is formed by adding 30-50% of copper powder, 30-50% of iron powder, 1-6% of tin powder, 1-8% of molybdenum powder, 1-10% of silicon carbide, 1-7% of lead powder, 1-6% of molybdenum disulphide and 5-20% of flaky graphite in weight ratio. Preprocessing, burdening, mixing, pressing, sintering, cooling and machining are carried out on the raw materials, so that a sector powder alloy friction piece is formed, and the friction piece is paired with heat-resisting alloy steel or wear-resisting cast iron to form a friction couple. The iron-copper-based powder alloy brake block is applicable to an airplane multi-disc type brake device or the brake and the clutch of a heavy duty vehicle.

Description

technical field [0001] The invention belongs to aviation brake technology and powder metallurgy technology, in particular to an iron-copper-based powder alloy brake material and a preparation method thereof. Background technique [0002] Powder alloy brake material is a commonly used aircraft brake material. B737 and other aircraft manufactured by Boeing, A300, A320 and other aircraft manufactured by Airbus, as well as domestic Yun-7 and Yun-8 aircraft, etc., all use copper-based Or iron-based powder alloy brake material. [0003] The iron-based powder alloy brake material has a high matrix strength and is suitable for heavy-duty working conditions, but it has poor thermal conductivity and high compatibility with steel friction pairs. During the braking process, the temperature of the friction surface is high, and it is easy to bond with the friction pairs. , the dual surface is strained, grooves are formed on the dual surface, and the coefficient of friction is unstable. ...

Claims

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Application Information

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IPC IPC(8): B22F5/00B22F3/16
Inventor 杨尊社张炜
Owner XIAN AVIATION BRAKE TECH
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