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Making method of elastic copper alloy sheet used for spectacle frame

A technology of elastic sheet and spectacle frame, which is applied in the direction of metal rolling to achieve the effects of reducing deformation resistance, easy cold forming, and eliminating dendrite segregation

Active Publication Date: 2013-06-26
BEIJING INST OF NONFERROUS METALS & RARE EARTH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no product in China that can reach the level of CuNi9Sn6 copper alloy shrapnel, which is a foreign spectacle frame material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Adopt the following preparation method, feed 3kg, oxygen-free copper, ordinary nickel and high-purity tin are mixed according to the composition of Ni:Sn:Cu=9:6:85, respectively Ni, 270g; Sn, 180g; Cu, 2550g, and Smelting alloys.

[0033] Concrete preparation process is as follows:

[0034] 1) Prepare the raw materials according to the ratio;

[0035] 2) Put the prepared oxygen-free copper, ordinary nickel and high-purity tin raw materials into the alumina crucible, and then put them into the vacuum intermediate frequency induction furnace;

[0036] 3) Vacuumize to 5Pa, heat up, and adjust the power to 25KW→35KW→40KW in turn, with an interval of 5 minutes, to promote the complete melting of the alloy;

[0037] 4) Refining for 10 minutes after all the charge is melted; reduce the power to 25KW, pour in argon, and start casting;

[0038] 5) Take it out of the furnace after cooling for 30 minutes, and cool it to room temperature with water. The ingot size is 20mm thick ...

Embodiment 2

[0046] The method is the same as in Example 1, the difference is that: feed 3kg, oxygen-free copper, common nickel and high-purity tin are mixed according to the composition of Ni:Sn:Cu=9.5:6.5:85, respectively Ni, 285g; Sn, 180g; Cu , 2535g.

Embodiment 3

[0048] The method is the same as in Example 1, the difference is that: feed 3kg, oxygen-free copper, ordinary nickel and high-purity tin are mixed according to the composition of Ni:Sn:Cu=9:6.5:84.5, respectively Ni, 270g; Sn, 195g; Cu , 2535g.

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PUM

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Abstract

The invention discloses a making method of an elastic copper alloy sheet used for a spectacle frame. A component qualified alloy ingot is used to continuously process in the invention. The above alloy comprises 8.5-9.5% by mass of Ni, 5.5-6.5% by mass of Sn, and the balance Cu. The method comprises the following steps: heating to 345-355DEG C, carrying out heat insulation of the ingot in an inert atmosphere for 20-40min, carrying out hot rolling deformation by 15-25%, and covering with carbon at a temperature of 795-805DEG C or homogeneously annealing in an inert gas; carrying out hot rolling cogging of the ingot, wherein the total machining rate is 55-70%; carrying out intermediate destressing annealing in a vacuum annealing furnace in 645-655DEGC / 2h; carrying out cold rolling until the thickness of the sheet is 1.2-1.4mm, wherein the total machining rate is 70-80%, and the pass machining rate is 10-15%; and carrying out solid solution and water quenching in the inert atmosphere, and carrying out cold rolling to the thickness of the finished sheet. The finished sheet is straightened, and the surface of the sheet is pickled. The performances of the elastic sheet used for the spectacle frame, which is made through using the method, can reach the performances of elastic CuNi9Sn6 alloy sheets reaching the levels of foreign products.

Description

technical field [0001] The invention relates to a novel processing technology for preparing copper alloy CuNi9Sn6 elastic sheet material for spectacle frames. Background technique [0002] Spectacle frame materials are generally divided into three types, namely metal frames, non-metal frames and natural material frames. At present, metal frames on the market generally include copper alloys, nickel alloys and precious metals. Copper alloy mirror frames mainly include brass, bronze, and zinc white copper. Because of their poor corrosion resistance, they are prone to patina, rust, and deformation, but they are low in cost and easy to process. They are often used in low-grade mirror frames. The lowest kind. Nickel alloys have good corrosion resistance, are not easy to rust, and have better mechanical strength than copper alloys. Therefore, nickel alloy materials account for the majority of metal frames, and are generally used for medium and high-end mirror frames. Among the h...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22F1/08B21B3/00
Inventor 陈文敬王炜张震赵宏超陈利建
Owner BEIJING INST OF NONFERROUS METALS & RARE EARTH
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