Novel elastic tin-phosphor bronze alloy and preparation method thereof

A tin phosphor bronze and elastic technology, which is applied in the field of new elastic tin phosphor bronze alloy and its preparation, can solve problems such as unfavorable alloy performance, achieve the effects of reducing production cost, reducing loss, and improving tensile strength and yield strength

Inactive Publication Date: 2015-11-18
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, China has imported and transformed copper alloy sheet and strip production lines with advanced technology from abroad, but due to the particularity of the tin-phosphorus bronze alloy itself and the domestic technological level, various defects that are unfavorable to the properties of the alloy will still occur during the production process. factor

Method used

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  • Novel elastic tin-phosphor bronze alloy and preparation method thereof
  • Novel elastic tin-phosphor bronze alloy and preparation method thereof
  • Novel elastic tin-phosphor bronze alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A novel elastic tin phosphor bronze alloy, the mass percent of the alloy composition is:

[0048] Sn: 6.08wt%;

[0049] P: 0.14wt%;

[0050] Ni: 0.151wt%;

[0051] Al: 0.002wt%;

[0052] Zn: 0.22wt%;

[0053] Fe: 0.035wt%;

[0054] Pb: 0.01wt%;

[0055] The remainder is Cu and unavoidable impurities.

[0056] In this example, the sum of the mass percentages of Cu, Sn and P in the alloy composition is not less than 99.5 wt%.

[0057] A preparation method of a novel elastic tin phosphor bronze alloy, comprising the following steps:

[0058] a. Determination of composition: first select C5191 tin phosphor bronze waste as raw material, and measure the composition of the raw material by direct reading spectrometer;

[0059] b. Raw material smelting: the raw material is smelted in an intermediate frequency protection furnace with Ar gas atmosphere protection, and heated to 1300-1400 ℃ to keep it warm, add the master alloy, after fully melting, keep it warm for 40 minu...

Embodiment 2

[0069] Adopt embodiment 1 method to react, and its difference is:

[0070] In this example, a new type of elastic tin phosphor bronze alloy, its alloy composition mass percentage is:

[0071] Sn: 5.78wt%;

[0072] P: 0.11wt%;

[0073] Ni: 0.083wt%;

[0074] Al: 0.002wt%;

[0075] Zn: 0.22wt%;

[0076] Fe: 0.035wt%;

[0077] Pb: 0.01wt%;

[0078] The rest are Cu and unavoidable impurities; all the other are the same as in Example 1.

[0079] The copper strip sample test of step e gained, its main mechanical property is as shown in table 2:

[0080] Table 2

[0081]

Embodiment 3

[0083] Adopt embodiment 1 method to react, and its difference is:

[0084] In this example, a new type of elastic tin phosphor bronze alloy, its alloy composition mass percentage is:

[0085] Sn: 6.41wt%;

[0086] P: 0.19wt%;

[0087] Ni: 0.201wt%;

[0088] Al: 0.002wt%;

[0089] Zn: 0.22wt%;

[0090] Fe: 0.035wt%;

[0091] Pb: 0.01wt%;

[0092] The rest are Cu and unavoidable impurities; all the other are the same as in Example 1.

[0093] The copper strip sample test of step e gained, its main mechanical property is as shown in table 3:

[0094] table 3

[0095]

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Abstract

The invention discloses a novel elastic tin-phosphor bronze alloy and a preparation method thereof, and belongs to the technical field of engineering material manufacturing. The alloy comprises, by weight, 5.5%-6.5% of Sn, 0.05%-0.19% of P, 0.033%-0.201% of Ni, 0%-0.002% of Al, 0%-0.3% of Zn, 0%-0.05% of Fe, 0%-0.02% of Pb, and the balance Cu and unavoidable impurities. The alloy is high in yield strength, so that the plugging and unplugging frequency of a connector made of the alloy is increased, the using frequency of a pluggable piece is increased, the service life of the pluggable piece is prolonged, and the quality of an electronic pluggable piece is improved. Moreover, the novel elastic tin-phosphor bronze alloy is widely suitable for manufacturing new-generation high-performance elastic elements for the electrical equipment industry.

Description

technical field [0001] The invention belongs to the technical field of engineering material manufacturing, and more specifically relates to a novel elastic tin-phosphorus bronze alloy and a preparation method thereof. Background technique [0002] Tin phosphor bronze alloy can improve its microstructure and performance through solution treatment, cold deformation treatment and low temperature heat treatment. It is currently the most commonly used and very important elastic copper alloy material. It has been found through research that the mechanical properties of tin-phosphorus bronze alloys, such as strength and hardness, will gradually increase with the increase of Sn element content, and tin-phosphorus bronze alloys with a Sn content of 4%-9% are widely used in the manufacture of various electrical switches , Relays, mouse shrapnel and other electronic components. Due to the many times of cold working, high work hardening rate and many heat treatment passes of tin phosph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/02C22C1/03C22F1/08
Inventor 朱协彬顾小莉徐灏
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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