Rare-earth containing composite modificator suitable for Sn-P bronze alloy

A tin-phosphor bronze and rare earth composite technology is applied in the field of rare earth-containing composite modifiers, which can solve the problems of coarse dendrites in the as-cast structure and serious Sn segregation, and achieve the effects of refining the structure, reducing the segregation of Sn elements, and improving the uniformity.

Active Publication Date: 2015-12-23
NINGBO XINGYE SHENGTAI GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at problems such as coarse dendrites in the as-cast structure and severe Sn segregation in the production of tin-phosphorus bronze alloys, and provides a novel compound modifier containing rare earth, which is added in the production process of tin-phosphorus bronze alloys , to refine the structure of the alloy, reduce the segregation of Sn elements, and improve the uniformity of the alloy properties

Method used

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  • Rare-earth containing composite modificator suitable for Sn-P bronze alloy
  • Rare-earth containing composite modificator suitable for Sn-P bronze alloy

Examples

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Embodiment 1-7

[0017] Example 1-7: Add the modifier of the present invention to the QSn6.5-0.1 tin phosphor bronze alloy. The weight percent composition of QSn6.5-0.1 is: Sn: 6.0-7.0%, P: 0.05-0.15%, and Cu is the balance. The processing technology of tin-phosphorus bronze alloy (QSn6.5-0.1) is batching→smelting→adding rare earth-containing compound modifier→horizontal continuous casting→face milling→cold rolling billet→annealing→pickling→medium rolling→annealing→acid Washing→finish rolling→stress relief annealing→pickling→tension bending straightening→separate shearing and storage.

[0018] The smelting process uses an intermediate frequency induction furnace and corresponding horizontal continuous casting equipment. First, electrolytic copper and electrolytic cobalt are melted, then at least one of Cu-Gd, Cu-Nd, and Cu-Ce is added, and then Cu-Nb, Cu-Mn, Cu-V, then add copper-phosphorus intermediate alloy, stir for 10-20 minutes, add pure tin after holding for 20-30 minutes, then carry ou...

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Abstract

The invention relates to a rare-earth containing composite modificator suitable for Sn-P bronze alloy and belongs to the field of nonferrous metal processing. The modificator comprises one or more than two rare earth elements of Gd, Nd and Ce, wherein the Gd accounts for 0.001-0.005wt% of the alloy, the Nd accounts for 0.001-0.005wt% of the alloy, and the Ce accounts for 0.001-0.005wt% of the alloy. Besides, the modificator can further comprise 0.005-0.01% of V, 0.002-0.005% of Nb, 0.01-0.05% of Mn and 0.02-0.05% of Co. The modificator can effectively refine the texture of Sn-P bronze, reduce the segregation of the Sn element, save a following long-time homogenizing annealing technology, improve the evenness of alloy texture performance, improve the density of the alloy, and improve the performance of the alloy, such as intensity, conductivity and elasticity.

Description

technical field [0001] The invention relates to a rare earth-containing composite modifier suitable for tin-phosphorus bronze alloys, belonging to the field of nonferrous metal processing. Background technique [0002] High-strength and high-elasticity copper-based alloys are widely used in industries such as medical treatment, aviation, navigation and navigation instruments, machinery manufacturing, instrumentation and instrument manufacturing due to their high strength, excellent elasticity, fatigue resistance, and small elastic hysteresis. At present, the copper-based elastic alloys in the domestic market are mainly made of tin phosphor bronze and beryllium bronze. Among them, beryllium bronze is the most commonly used high-elastic alloy at present, but because the oxides and dust of beryllium are toxic, they are harmful to the environment and human body. There are certain damages to health, which greatly limits the industrialization and use of beryllium bronze. However,...

Claims

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Application Information

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IPC IPC(8): C22C9/02C22C1/03
Inventor 黄国杰彭丽军陈信渭陆明娄国军陆巧荣徐建成朱国军朱树全陆建平苑和锋
Owner NINGBO XINGYE SHENGTAI GROUP
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