A kind of copper alloy hairspring material and preparation method thereof

A copper alloy and hairspring technology, which is applied in metal rolling, gyroscope/steering sensing equipment, instruments, etc., can solve the difficulty in meeting the finished product size and tolerance requirements, high mechanical and conductive performance requirements, poor consistency and stability, etc. problems, to achieve the effect of being conducive to mass production, simple and easy preparation method, and excellent performance

Active Publication Date: 2021-11-09
BEIJING INST OF NONFERROUS METALS & RARE EARTH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small size, strict tolerance requirements, high mechanical and conductive performance requirements, and this type of copper alloy generally contains brittle phases, which makes plastic forming difficult, making it difficult to meet the final product size and tolerance requirements.
And due to the difficulty of processing, the consistency and stability of the material are poor

Method used

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  • A kind of copper alloy hairspring material and preparation method thereof
  • A kind of copper alloy hairspring material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Example 1: Preparation of Be2Ni0.3Zn2Sn2Cu copper alloy hairspring material

[0070] The design furnace capacity is 5.00kg.

[0071] Weigh 0.88kg of Cu, 0.12kg of Be, 0.8kg of Cu, and 0.2kg of Sn, respectively, and put them into a vacuum intermediate frequency melting furnace, and evacuate to 8.0×10 -2 Pa, after the metal is fully melted, put it into water quickly to prepare 1kgCu-Be master alloy and 1kgCu-Sn master alloy respectively.

[0072] Weigh 3.55 kg of Cu, 0.833 kg of Cu-Be intermediate, 0.5 kg of Cu-Sn intermediate, 0.1 kg of Zn, and 0.015 kg of Ni, and put them into the graphite crucible of the non-vacuum melting furnace, and use medium frequency induction melting, metal Add covering agent after complete melting, the melting temperature is 1211°C, and the casting speed is 3mm / s. A billet with a diameter of 10.0 mm and a length of about 0.7 m was cast.

[0073] The prepared billet is swaged, and the single-pass processing rate is between 10.3% and 12.5%, an...

Embodiment 2

[0078] Example 2: Preparation of Be1Ni0.3Zn3Sn3Cu copper alloy hairspring material

[0079] The design furnace capacity is 4.92kg.

[0080] Weigh 0.36kg of Cu, 0.05kg of Be, 0.59kg of Cu, and 0.15kg of Sn, respectively, and put them into a vacuum intermediate frequency melting furnace, and evacuate to 8.0×10 -2 Pa, after the metal is completely melted, put it into water quickly to prepare 0.41kg Cu-Be master alloy and 0.74kg Cu-Sn master alloy respectively.

[0081] Weigh 3.61 kg of Cu, 0.41 kg of Cu-Be intermediate, 0.74 kg of Cu-Sn intermediate, 0.15 kg of Zn, and 0.015 kg of Ni, and put them into the graphite crucible of the non-vacuum melting furnace, and use medium frequency induction melting, metal Add the covering agent after full melting, the melting temperature is 1238°C, and the casting speed is 5mm / s. Cast a billet with a diameter of 8.0mm and a length of about 1.1m.

[0082] The prepared billet is swaged, and the single-pass processing rate is between 11.0% and ...

Embodiment 3

[0087] Example 3: Preparation of Be2Ni0.3Zn2Sn2Cu copper alloy hairspring material

[0088] The design furnace capacity is 5.00kg.

[0089] Weigh 0.88kg of Cu, 0.12kg of Be, 0.8kg of Cu, and 0.2kg of Sn, respectively, and put them into a vacuum intermediate frequency melting furnace, and evacuate to 8.0×10 -2 Pa, after the metal is fully melted, put it into water quickly to prepare 1kgCu-Be master alloy and 1kgCu-Sn master alloy respectively.

[0090]Weigh 3.55kg of Cu, 0.833kg of Cu-Be intermediate, 0.5kg of Cu-Sn intermediate, 0.1kg of Zn, and 0.015kg of Ni, and put them into the graphite crucible of the non-vacuum melting furnace, adopt medium frequency induction melting, metal Add covering agent after complete melting, the melting temperature is 1287°C, and the casting speed is 3mm / s. A billet with a diameter of 10.0 mm and a length of about 0.7 m was cast.

[0091] The prepared billet is swaged, and the single-pass processing rate is between 10.3% and 12.5%, and proces...

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Abstract

The invention relates to a copper alloy hairspring material and a preparation method thereof, belonging to the fields of metallurgy and rolling processing. The copper alloy hairspring material is mainly used in gyroscope inertial navigation systems. The copper alloy is composed of the following components: Be 0-5wt%, Ni 0.2-1wt%, Zn 1-5wt%, Sn 1-5wt%, Cu balance. The copper alloy hairspring involved in the invention has uniform composition, precise size, excellent mechanical properties and corrosion resistance, and is prepared by continuous casting, swaging, single wire drawing, special rolling, special-shaped drawing and combined heat treatment. The method overcomes the processing difficulty caused by the brittleness of the alloy, and can produce a copper alloy hairspring material with precise dimensions and excellent performance, which is suitable for mass production.

Description

technical field [0001] The invention relates to a copper alloy hairspring material and a preparation method thereof. The copper alloy hairspring material is mainly used in a gyroscope inertial navigation system and belongs to the fields of metallurgy and rolling processing. Background technique [0002] Inertial navigation system can complete the navigation tasks autonomously by relying on its principle of action, so it occupies a very important position in the field of navigation, especially in today's rapid development of modern military technology, autonomous navigation has become the most ideal choice. As the core component of the inertial navigation system, the gyroscope uses the two characteristics of fixed axis and precession of the gyroscope, which are not only used in the field of marine ships, but also used in land weapons and air vehicles for attitude measurement and attitude measurement. control and so on. The gyroscope is the heart of the inertial navigation sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08B21C37/04B21C1/02B21B1/16G01C21/18G01C19/00
CPCB21B1/16B21C1/02B21C37/047C22C1/03C22C9/00C22F1/08G01C19/00G01C21/18
Inventor 焦磊张国清李艳涛陈立健王炜齐岳峰付晓玄
Owner BEIJING INST OF NONFERROUS METALS & RARE EARTH
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