Aluminium bronze continuously-cast tube with both high strength and high ductility, and production method thereof

A production method and high ductility technology, which are applied in the field of aluminum bronze continuous casting pipes with both high strength and high ductility and their production fields. The effect of market competitive advantage, excellent comprehensive performance and low production cost

Inactive Publication Date: 2014-06-25
海门市江滨永久铜管有限公司
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Problems solved by technology

[0005] According to the copper-aluminum alloy phase diagram, as the aluminum content increases, the β phase in the alloy matrix increases. Due to the hard and brittle characteristics of the β phase, the plasticity of the material is poor
However, materials with higher aluminum content will form hard and brittle γ phase at low temperature, which will deteriorate the overall performance of the alloy.
[0006] German patent CN1400326 discloses a forged aluminum bronze with high wear resistance and high friction coefficient, which is applied in the field of automotive synchronizer rings. The corresponding mechanical performance requirements can only be achieved after aging...

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  • Aluminium bronze continuously-cast tube with both high strength and high ductility, and production method thereof

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Embodiment Construction

[0040] According to the feeding plan of 10-11.5% (weight) of aluminum, 4-5% (weight) of iron, and the balance of copper, a cored power frequency induction furnace is used to batch ingredients according to the furnace body capacity. First add 2 / 3 copper + 1 / 3 aluminum + iron in the furnace, cover with 0.1% cryolite according to the feeding amount, raise the furnace temperature to 1300°C after the copper is melted, add 1 / 3 copper to cool down and add 2 / 3 aluminum, add cryolite to remove slag after melting again, heat up to 1100-1200 ℃ for drawing and casting. During the drawing-casting process, add aluminum at 0.5% of the total weight of the feed every hour to make up for the loss of aluminum during the drawing-casting process (of course, this loss can also be ignored without adding aluminum). The drawing temperature is 1100-1200°C, the drawing length is 8-15mm, the drawing frequency is 6-15 times / min, and the rest time is 3-8 seconds. The cooling adopts the combination of pri...

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Abstract

The invention discloses an aluminium bronze continuously-cast tube with both high strength and high ductility, and a production method thereof. The product is composed of the following constituents in percentage by weight: 10-11.5% of aluminium, 3-5% of iron, not less than 1.5% of nickel, not less than 0.5% of manganese and the balance of copper; a rough horizontal contact casting procedure is used. The product disclosed by the invention has the characteristics of being excellent in comprehensive performance and low in machining cost. By virtue of adopting the continuous production mode, the production method is capable of producing the continuously-cast tube with any length, and suitable for the application field of modern numerical-control equipment high-speed work with high requirements on the straightness and lengths of tubes.

Description

technical field [0001] The invention relates to an aluminum bronze continuous casting pipe and a production method thereof. Background technique [0002] Due to its high strength, hardness, good wear resistance, and compact alloy structure, aluminum bronze is suitable for manufacturing heavy machinery and pressure-resistant and wear-resistant parts that require high strength, such as bushings, bearings, flanges, linings, etc. sleeve, valve body, pump body, guide sleeve, etc. [0003] The continuous casting of bronze tubes is much more difficult than that of brass, especially for large-scale horizontal continuous casting tubes, and its processing technology is even more difficult to master. This manufacturing process and technology has been monopolized by foreign countries for a long time, and only a few domestic enterprises are engaged in production according to the traditional sand mold or centrifugal casting production process. [0004] In recent years, in order to meet ...

Claims

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Application Information

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IPC IPC(8): C22C9/01B22D11/00
Inventor 王艳杰张戍
Owner 海门市江滨永久铜管有限公司
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