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Steel-backing non-electroplating iron alloy based friction material and preparation method and application for friction piece

A friction material, ferrous-based technology, applied in the field of powder metallurgy, can solve the problems of polluted water, energy consumption, air quality degradation, etc., and achieve the effects of wide source, low price and low production cost

Inactive Publication Date: 2016-03-30
CHANGSHA JIANMING ENG MACHINERY FRICTION MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polluted waste water flows into the soil, polluting the water source, and the exhaust gas released has a pungent and unpleasant smell, which seriously reduces the air quality.
The production of millions of tons of friction material products every year has brought great harm to environmental pollution; in addition, the steel back of iron-based friction materials needs to be plated with copper, and some require nickel plating after copper plating, which consumes a lot of energy, such as electricity, manpower, water resources, etc.

Method used

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  • Steel-backing non-electroplating iron alloy based friction material and preparation method and application for friction piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The composition and weight percentage of the iron-based friction material are as follows:

[0026] Iron powder 60%;

[0027] Metal binder 8%: selected from magnesium 2%, antimony 2%, molybdenum 2%, zinc 2%;

[0028] Friction modifier 25%: selected from copper 10%, lead 6%, feldspar 6%, wollastonite 3%;

[0029] Anti-wear agent 7%: selected from petroleum coke 5%, antimony sulfide 2%.

[0030] The specific preparation process of friction parts is as follows:

[0031] S1. Mixing: Weigh the above-mentioned metal bond, friction modifier and anti-wear agent in proportion, put them into the mixer and stir for 0.5 hours, then weigh the iron powder and put them into the mixer, and continue to stir for 2.5 hours to obtain Mixed powder;

[0032] S2. Blank making: According to the weight of different friction parts, put the uniformly mixed powder into the corresponding mold, and the 2 Pressed into a billet under the pressure;

[0033] S3. Making the steel back: According to ...

Embodiment 2

[0036] The friction part A2 was prepared according to the method of Example 1, the difference is that the composition and weight percentage of the iron-based friction material are as follows:

[0037] Iron powder 70%;

[0038] Metal binder 10%: selected from tin 5%, nickel 3%, antimony 2%;

[0039] Friction modifier 12%: selected from silicon dioxide 2%, magnesium oxide 10%;

[0040] 8% anti-wear agent: 8% selected from calcined graphite.

Embodiment 3

[0042] Friction part A3 was prepared according to the method of Example 1, with the difference that the composition and weight percentage of the iron-based friction material were as follows:

[0043] Iron powder 75%;

[0044] Metal binder 1%: selected from aluminum 1%;

[0045] Friction modifier 19%: selected from zinc oxide 8%, wollastonite 4%, vermiculite 4%, lead 3%;

[0046] 5% anti-wear agent: 5% selected from ferrous sulfate.

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Abstract

The invention provides a steel-backing non-electroplating iron alloy based friction material and a preparation method and application for a friction piece. The iron alloy based friction material is composed of, by weight, 60%-84% of iron powder, 1%-10% of metallic bond, 12%-30% of friction modifier and 3%-16% of abrasion-resistant agent. The invention further provides the method for preparing the steel-backing non-electroplating iron alloy based friction piece through the friction material and the application of the prepared friction piece. The manufacturing cost of the prepared steel-backing non-electroplating iron alloy based friction piece is far lower than that of a steel-backing electroplating iron alloy based friction piece. The iron alloy based friction layer is firmly bonded to steel backing and free of cracks, stripping and layering are avoided, and the technical requirements and the market requirements are completely met, so that not only is the environment protected, but also resources are saved.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a preparation method and application of a steel-backed iron-based friction material without electroplating and a friction piece. Background technique [0002] Powder metallurgy iron-based friction material (hereinafter referred to as: iron-based friction material) is to paste the pressed iron-based blank on one or both sides of the electroplated steel back (some called core plate), and then pass through Pressurized and sintered to make it bonded into one, and processed by plane processing, chamfering, oil groove, etc. At present, the domestic production of ferroalloy-based friction materials is based on such a production mode and process. [0003] Steel back electroplating is widely used in friction material manufacturing technology, and the requirements are strict. For example, steel back copper plating of iron-based friction materials, the thickness is generally 0.01mm~0.05mm,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C38/00B22F3/16C09K3/14
Inventor 秦建明袁光华秦琴
Owner CHANGSHA JIANMING ENG MACHINERY FRICTION MATERIALS CO LTD
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