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

A friction material and electroplating copper technology, applied in friction linings, mechanical equipment, etc., can solve problems such as large energy consumption, water pollution, environmental pollution damage, etc., and achieve the effect of low production cost, low price, and wide sources

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 copper-based friction materials needs to be plated with copper, and some also require tin and 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 copper alloy based friction material and preparation method and application for friction piece
  • Steel-backing non-electroplating copper alloy based friction material and preparation method and application for friction piece
  • Steel-backing non-electroplating copper 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 copper alloy-based friction material are as follows:

[0026] Copper powder 71%;

[0027] Metal binder 3%: selected from aluminum 1.5%, zinc 1.5%;

[0028] Friction modifier 20%: selected from lead 8%, magnesium oxide 8%, silicon dioxide 2%, vermiculite 2%;

[0029] 6% anti-wear agent: 6% selected from barium sulfate.

[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 copper powder and put them into the mixer, and continue to stir for 2 hours to obtain Mixed powder;

[0032] S2. Billet making: according to the weight of different friction parts, put the uniformly mixed powder into the corresponding mold, at 2t / cm 2 Pressed into a billet under the pressure;

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

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 copper-based friction material are as follows:

[0037] Copper powder 66%;

[0038] Metal binder 6%: selected from tin 5%, nickel 1%;

[0039] Friction modifier 18%: selected from iron 15%, magnesium oxide 3%;

[0040] 10% anti-wear agent: selected from 2% molybdenum disulfide, 3% calcined graphite, and 5% graphite.

Embodiment 3

[0042] The friction part A3 was prepared according to the method of Example 1, the difference is that the composition and weight percentage of the copper-based friction material are as follows:

[0043] Copper powder 60%;

[0044] Metal binder 8%: selected from tin 5%, antimony 3%;

[0045] Friction modifier 20%: selected from vermiculite 5%, zinc oxide 5%, magnesium oxide 5%, lead 5%;

[0046] 12% anti-wear agent: selected from 6% barium sulfate and 6% calcined graphite.

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Abstract

The invention provides a steel-backing non-electroplating copper alloy based friction material and a preparation method and application for a friction piece. The copper alloy based friction material is composed of, by weight, 50%-84% of copper powder, 3%-15% of metallic bond, 5%-20% of friction modifier and 5%-15% of abrasion-resistant agent. The invention further provides the method for preparing the steel-backing non-electroplating copper alloy based friction piece through the friction material and the application of the friction piece. The manufacturing cost of the prepared steel-backing non-electroplating copper alloy based friction piece is far lower than that of a steel-backing electroplating copper alloy based friction piece. The copper 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 copper-based friction material without electroplating on a steel back and a friction piece. Background technique [0002] Powder metallurgy copper-based friction material (hereinafter referred to as: copper-based friction material) is to paste the pressed copper-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 manufacture of domestic copper alloy-based friction materials is such a production mode and process. [0003] Steel back plating is widely used in friction material manufacturing technology and has strict requirements. For example, steel back copper plating of copper-based friction materials generally has a thickness of 0.01mm~0.05mm, fol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F7/08F16D69/02
Inventor 秦建明袁光华秦琴
Owner CHANGSHA JIANMING ENG MACHINERY FRICTION MATERIALS CO LTD
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