High-strength antioxidant tin bronze alloy and preparation method thereof

Abstract

The invention discloses a high-strength antioxidant tin bronze alloy and a preparation method, belongs to the field of copper alloys, and aims to improve the antioxidant capacity of the alloy and endow the alloy with the combined properties of high strength, uniform corrosion resistance and pitting corrosion resistance on the basis of not reducing the strength of the alloy. The high-strength antioxidant tin bronze alloy comprises, in mass%, 98%-99.7% of copper (Cu), 0.01%-1% of aluminum (Al), 0-0.01% of iron (Fe), 0.05%-1% of tin (Sn), 0.006%-0.025% of phosphorus (P), and the balance no more than 0.05% of impurities. The invention further discloses a preparation method of the high-strength antioxidant tin bronze alloy, and the optimal adding sequence of various elements is disclosed.

Description

Technical field

[0001] The invention relates to the field of copper alloys, in particular to a high-strength oxygen-resistant tin bronze alloy and a preparation method thereof.

Background technique

[0002] In order to improve the pressure resistance capacity of copper tubes used in existing pipelines such as air-conditioning and refrigeration, chemical equipment, and pressure vessels, micro-alloy copper tubes with higher strength are gradually adopted from the original phosphorus-deoxidized copper (TP1, TP2), and the material grade is QSn0.5-0.025, wherein tin (Sn) content is 0.25%-0.6%; phosphorus (P) content is 0.015%-0.035%; iron (Fe) content is less than 0.01%, and the rest is copper content.

[0003] This grade of bronze alloy provides a copper alloy material with high pressure resistance. The copper tube made of this copper alloy material can overcome the defect of low pressure resistance of ordinary phosphorus deoxidized copper tubes, and has good toughness and w...

Examples

Embodiment Construction

[0022] The technical solutions of the embodiments of the present invention are explained and described below, but the following embodiments are only preferred embodiments of the present invention, not all of them. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

[0023] The invention discloses a high-strength oxygen-resistant tin bronze alloy, which contains 98% to 99.7% of copper (Cu), 0.01% to 1% of aluminum (Al), 0 to 0.01% of iron (Fe), 0.05% ˜1% tin (Sn), 0.006%˜0.025% phosphorus (P), and the rest are impurities not greater than 0.05%.

[0024] The copper alloy disclosed by the present invention adopts the strengthening method of adding trace elements, adding a trace amount of elements such as Sn to the matrix Cu to form a solid solution, and the influence of a trace amount of Sn element on the grain boundary increases the c...

Technical field

[0001] The invention relates to the field of copper alloys, in particular to a high-strength oxygen-resistant tin bronze alloy and a preparation method thereof.

Background technique

[0002] In order to improve the pressure resistance capacity of copper tubes used in existing pipelines such as air-conditioning and refrigeration, chemical equipment, and pressure vessels, micro-alloy copper tubes with higher strength are gradually adopted from the original phosphorus-deoxidized copper (TP1, TP2), and the material grade is QSn0.5-0.025, wherein tin (Sn) content is 0.25%-0.6%; phosphorus (P) content is 0.015%-0.035%; iron (Fe) content is less than 0.01%, and the rest is copper content.

[0003] This grade of bronze alloy provides a copper alloy material with high pressure resistance. The copper tube made of this copper alloy material can overcome the defect of low pressure resistance of ordinary phosphorus deoxidized copper tubes, and has good toughness and w...

Examples

Embodiment Construction

[0022] The technical solutions of the embodiments of the present invention are explained and described below, but the following embodiments are only preferred embodiments of the present invention, not all of them. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

[0023] The invention discloses a high-strength oxygen-resistant tin bronze alloy, which contains 98% to 99.7% of copper (Cu), 0.01% to 1% of aluminum (Al), 0 to 0.01% of iron (Fe), 0.05% ˜1% tin (Sn), 0.006%˜0.025% phosphorus (P), and the rest are impurities not greater than 0.05%.

[0024] The copper alloy disclosed by the present invention adopts the strengthening method of adding trace elements, adding a trace amount of elements such as Sn to the matrix Cu to form a solid solution, and the influence of a trace amount of Sn element on the grain boundary increases the c...

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