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Iron-based-ferrite material, preparation method and application thereof

A ferrite material and ferrite technology, applied in the field of materials, can solve the problems of landing, dust accumulation, strong water absorption, etc., and achieve the effects of not easy to diffuse and float, light pollution, and strong water absorption

Active Publication Date: 2021-03-30
沈阳市沈新粉末冶金制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although "iron-based-ferrite" brake pads also produce a certain amount of PM 2.5 dust, their chemical composition is iron oxide, which can be changed by weak acid and weak alkaline substances in the human body; on the other hand, due to the It is not easy to spread and float in the air because of its large specific gravity, and because of its strong water absorption, the fine dust gathers and falls to the ground

Method used

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  • Iron-based-ferrite material, preparation method and application thereof
  • Iron-based-ferrite material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing an iron-based-ferrite friction plate comprises the following steps.

[0039] (1) Add 1% zinc stearate of the iron-based-ferrite material into the iron-based-ferrite material, and mix uniformly to obtain a powder.

[0040] (2) Load the powder into the steel mold for pressing and forming, at 4-5 tons of force / cm 2 Squeeze and demould under pressure to form compacts; take qualified compacts and put them into a continuous sintering furnace for sintering, the heating rate is 50-100°C / h, the sintering temperature is 1100°C, and the heat preservation is 3h. During the process, N 2 for protection.

[0041] (3) After sintering, an iron-based-ferrite friction plate is obtained.

[0042] The iron-based-ferrite material is composed of 40% pure iron powder and 60% strontium ferrite.

Embodiment 2

[0044] A method for preparing an iron-based-ferrite friction plate comprises the following steps.

[0045] (1) Add 1% polyvinyl alcohol of the iron-based-ferrite material into the iron-based-ferrite material, and mix evenly to obtain a powder.

[0046] (2) Load the powder into the steel mold for pressing and forming, at 4-5 tons of force / cm 2 Squeeze and demould under pressure to form compacts; take qualified compacts and put them into a continuous sintering furnace for sintering, the heating rate is 50-100°C / h, the sintering temperature is 1130°C, and the heat preservation is 4h. During the process, N 2 for protection.

[0047] (3) After sintering, an iron-based-ferrite friction plate is obtained.

[0048] The iron-based-ferrite material consists of 43% pure iron powder and 57% strontium ferrite.

Embodiment 3

[0050] A method for preparing an iron-based-ferrite friction plate comprises the following steps.

[0051] (1) Add 1% polyvinyl alcohol of the iron-based-ferrite material into the iron-based-ferrite material, and mix evenly to obtain a powder.

[0052] (2) Load the powder into the steel mold for pressing and forming, at 4-5 tons of force / cm 2 Squeeze and demould under pressure to form compacts; take qualified compacts and put them into a continuous sintering furnace for sintering, the heating rate is 50-100°C / h, the sintering temperature is 1130°C, and the heat preservation is 4h. During the process, N 2 for protection.

[0053] (3) After sintering, an iron-based-ferrite friction plate is obtained.

[0054]The iron-based-ferrite material is composed of 45% pure iron powder and 55% strontium ferrite.

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Abstract

The invention provides an iron-based-ferrite material and a preparation method thereof. The iron-based-ferrite material is composed of iron powder and ferrite. The invention further provides application of the iron-based-ferrite material in preparation of a powder metallurgy friction material and an automobile brake pad, and also provides a preparation method of the iron-based-ferrite material brake pad. The provided iron-based-ferrite material breaks through the routine that a ferrite material is usually used for preparing a magnetic material, and is creatively compounded with the iron powderto prepare the powder metallurgy friction material and the automobile brake pad, so that the harm of organic matters to the environment is reduced, and the content of dust in air is also reduced.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to an iron-based-ferrite material and its preparation method and application. Background technique [0002] The friction materials of existing automobile brake pads are all thermosetting polymer materials similar to "phenolic resins", which are thermally bonded with various combinations of "silicides, carbides, nitrides, oxides" and other ceramic particles. Although this type of brake pad has fully met the performance requirements in terms of automobile braking, the braking process may release phenol, formaldehyde and its derivatives due to thermal oxidative degradation, and emit toxic substances in the human living environment. What's more serious is that the ceramic material in the brake pads will be worn away until it becomes PM 2.5 dust and is discharged into the air. These dust, like asbestos, are extremely harmful to human health. Because after the dust enters the body, t...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/02B22F3/10C22C33/02C22C29/12C22C1/05B22F7/08F16D69/02
CPCB22F3/02B22F3/1007C22C33/0228C22C29/12C22C1/051B22F7/08F16D69/027F16D2069/005F16D2200/0008F16D2200/0034F16D2200/0078F16D2200/0086B22F1/10
Inventor 林文言
Owner 沈阳市沈新粉末冶金制品有限公司
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