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Novel flaky environment-friendly brass scrap and preparation method thereof

A scaly, brass chip technology, applied in the field of environmental protection brass chips and its preparation, can solve the problems of lead intrusion or prolapse, endangering human health, lead use restriction, etc., achieving moderate friction coefficient, increasing contact area, Low wear effect

Inactive Publication Date: 2017-07-14
江苏新冠制动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, lead and its compounds are one of the chemical substances that seriously endanger human life and the natural environment. The lead in the alloy is easily eroded or detached from the matrix during use, and the lead in industrial waste seeps into the groundwater system, and various Lead in various forms enters the animal or human food chain through various channels, endangering human health and affecting the environment
However, with the development of modern industry and economy, especially the requirements for environmental protection, such as the implementation of ROHS ban on lead in the electronics industry, this has greatly restricted the use of lead

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A novel flaky environment-friendly brass shavings is characterized in that it comprises the following components by weight percentage: copper: 55%; aluminum: 0.32%; lead: 200ppm; the balance is zinc.

[0033] A kind of its preparation method of novel scaly environment-friendly brass shavings, comprises the following steps:

[0034] (1) Put copper, aluminum, lead and zinc in a pure high-temperature electric furnace for heating according to the ratio, and carry out insulation treatment after complete melting;

[0035] (2) After the heat preservation treatment, use a spectrometer to inspect the composition of the sample taken out of the furnace to determine that the alloy composition is within the specified range;

[0036] (3) Reheat to 1200°C, turn on the vibration device of the pure high-temperature electric furnace, and cast a solid rough alloy rod by horizontal continuous casting method, and use a copper ingot milling machine to process the surface of the rough alloy r...

Embodiment 2

[0043] A novel flaky environment-friendly brass shavings is characterized in that it comprises the following components by weight percentage: copper: 57%; aluminum: 0.36%; lead: 350ppm; the balance is zinc.

[0044] A kind of its preparation method of novel scaly environment-friendly brass shavings, comprises the following steps:

[0045] (1) Put copper, aluminum, lead and zinc in a pure high-temperature electric furnace for heating according to the ratio, and carry out insulation treatment after complete melting;

[0046] (2) After the heat preservation treatment, use a spectrometer to inspect the composition of the sample taken out of the furnace to determine that the alloy composition is within the specified range;

[0047] (3) Reheat to 1200°C, turn on the vibration device of the pure high-temperature electric furnace, and cast a solid rough alloy rod by horizontal continuous casting method, and use a copper ingot milling machine to process the surface of the rough alloy r...

Embodiment 3

[0054] A novel flaky environment-friendly brass shavings is characterized in that it comprises the following components by weight percentage: copper: 59%; aluminum: 0.4%; lead: 0.005%; the balance is zinc.

[0055] A preparation method of novel scaly environment-friendly brass shavings, comprising the following steps:

[0056](1) Put copper, aluminum, lead and zinc in a pure high-temperature electric furnace for heating according to the ratio, and carry out insulation treatment after complete melting;

[0057] (2) After the heat preservation treatment, use a spectrometer to inspect the composition of the sample taken out of the furnace to determine that the alloy composition is within the specified range;

[0058] (3) Reheat to 1200°C, turn on the vibration device of the pure high-temperature electric furnace, and cast a solid rough alloy rod by horizontal continuous casting method, and use a copper ingot milling machine to process the surface of the rough alloy rod;

[0059]...

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Abstract

The invention belongs to the technical field of friction materials, and particularly relates to a novel flaky environment-friendly brass scrap and a preparation method thereof. The novel flaky environment-friendly brass scrap comprises, by weight, 55%-59% of copper, 0.32%-0.4% of aluminum, 200-500ppm of lead, and the balance zinc. The preparation method includes the steps that after all the components are put into a pure high-temperature electric resistance furnace to be heated and molten in proportion, the components are cast into an alloy bar through a horizontal continuous casting method; and then the alloy bar is crushed to be in the shape of flakes of different sizes through a blade-type crusher, and accordingly the flaky environment-friendly brass scrap can be obtained. According to the novel flaky environment-friendly brass scrap and the preparation method thereof, the strength, hardness and plasticity of brass can be improved through the aluminum, and the working condition design requirements of the friction materials are met; the content of the lead and the content of the copper are lowered in the novel flaky environment-friendly brass scrap, a proper amount of the aluminum is added, and therefore the effects of environmental protection and cost reducing are achieved under the premise that mass production can be guaranteed; the brass scrap is flaky, so that the contact area is effectively increased, the binding force is high, the friction coefficient is proper, and abrasion is small; and the novel flaky environment-friendly brass scrap can be widely applied to raw materials of the friction materials like a brake pad.

Description

technical field [0001] The invention belongs to the technical field of friction materials, and in particular relates to an environment-friendly brass shavings and a preparation method thereof. Background technique [0002] Friction material is a component material used in power machinery that relies on friction to perform braking and transmission functions. It mainly includes brake linings (brake pads) and clutch facings (clutch plates). Brake pads are used for braking and clutch plates are used for transmission. Any mechanical equipment and various moving vehicles must have braking or transmission devices. Friction material is a critical component on this braking or transmission. Its main function is to brake or transmit power through friction, and they enable mechanical equipment and various motor vehicles to work safely and reliably. Therefore, the friction material is a widely used and critical material. The components of the friction material include friction incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/04C22F1/08B22F1/00
CPCC22C1/0425C22C9/04C22F1/08B22F1/068
Inventor 殷国忠殷虎庆
Owner 江苏新冠制动科技有限公司
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