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cu‑ni‑si alloy material and cooling roll sleeves containing the alloy

A technology of alloy materials and cooling rolls, applied in high-strength copper alloy materials and application fields, can solve the problems of low strength of chromium-zirconium copper and poisonous elements in beryllium copper, and achieve reduced surface roughness, low cost and high strength Effect

Inactive Publication Date: 2017-04-26
BEIJING ELECTRIC POWER AUTOMATION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alloy of the present invention can overcome the deficiencies in the prior art such as the low strength of chromium-zirconium copper and the poisonous element Be contained in beryllium copper.

Method used

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  • cu‑ni‑si alloy material and cooling roll sleeves containing the alloy
  • cu‑ni‑si alloy material and cooling roll sleeves containing the alloy
  • cu‑ni‑si alloy material and cooling roll sleeves containing the alloy

Examples

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preparation example Construction

[0031] The preparation method of the Cu-Ni-Si alloy material includes the steps of smelting, casting, forging and heat treatment, wherein:

[0032] In the smelting and casting steps, the simple substance of each component is placed in an induction melting furnace for smelting according to a prescribed composition ratio, and then the molten Cu-Ni-Si alloy liquid is poured to obtain a casting billet;

[0033] In the forging step, the casting billet is hot forged in a temperature range of 720-920°C (for example, 730°C, 750°C, 800°C, 850°C, 870°C, 900°C, 910°C), and forged in this section Ni 2 Si crystal grains are uniform and refined to improve material strength;

[0034] In the heat treatment step, aging treatment is performed after solid solution, wherein the solid solution temperature is 820-980°C (for example, 830°C, 860°C, 880°C, 910°C, 950°C, 970°C), and the aging temperature is 420°C. ~500℃ (such as 430℃, 450℃, 480℃, 490℃), this heat treatment method can precipitate Ni for stren...

Embodiment 1

[0038] The Cu-Ni-Si alloy prepared in this embodiment is composed of the following components by weight percentage: Ni: 5.3%; Si: 1.2%; the balance is Cu and unavoidable impurities.

[0039] The preparation method of the Cu-Ni-Si alloy material in this embodiment is as follows:

[0040] (1) Smelting and casting According to the above-mentioned component weight ratio, nickel powder, silicon powder and copper block are put into an induction melting furnace for smelting, and then the molten Cu-Ni-Si alloy liquid is poured to obtain a casting billet;

[0041] (2) Forging: Hot forging the casting billet and cooling to room temperature after hot forging, where the initial forging temperature is 900°C and the final forging temperature is 800°C; punching and reaming must be completed during the forging process;

[0042] (3) The heat treatment adopts a solid solution + aging heat treatment process. The hot forged forgings are heated to 900°C for solution treatment, and after holding for 2 hours...

Embodiment 2

[0045] The Cu-Ni-Si alloy prepared in this embodiment is composed of the following components by weight percentage: Ni: 6.6%; Si: 1.6%; the balance is Cu and unavoidable impurities.

[0046] The preparation method of the Cu-Ni-Si alloy material in this embodiment is the same as that of embodiment 1, and the thickness of the obtained ring-shaped alloy material is the same as that of embodiment 1. See Table 1 for the properties of the alloy material prepared in this example.

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Abstract

The invention discloses a Cu-Ni-Si alloy material and a cooling roller sleeve containing the alloy. The Cu-Ni-Si alloy is composed of the following components by weight percentage: 3-7% of Ni, 0.8-2.2% of Si, and the balance of Cu and unavoidable impurities. The Cu-Ni-Si alloy comprising the components is applied to the cooling roller sleeve for the amorphous / nano-crystal strip production and a novel cooling roller composite structure roller sleeve is provided. The composite roller sleeve is composed of an inner layer and an outer layer, wherein the outer layer is a Cu-Ni-Si alloy and the inner layer is brass with low cost. The Cu-Ni-Si alloy sleeve is free of an expensive metal Be, cheaper than the beryllium copper, safe and environmentally friendly, so that the amorphous strip lamination coefficient and the finished product ratio can be effectively improved and the service life of the copper roller is prolonged. The composite roller sleeve disclosed by the invention is simple in structure and additionally the material cost is reduced.

Description

Technical field [0001] The invention relates to a high-strength copper alloy material and its application field, in particular to a Cu-Ni-Si alloy material and a cooling roll sleeve containing the alloy. The cooling roll sleeve is used for the preparation of amorphous and nanocrystalline strips . Background technique [0002] Amorphous / nanocrystalline strips are prepared by plane casting strip technology. The specific process is: molten high-temperature alloy melt is cast on the circumferential surface of a high-speed rotating cooling roll through a slit nozzle, requiring 1 million degrees / second cooling Speed, the heat is taken away in a very short time to quickly solidify the alloy solution into a strip, ensuring that the atomic structure of the alloy is amorphous, the strip is stripped, grabbed and coiled, and finally an amorphous / nanocrystalline coil is obtained . In order to meet the requirements of rapid cooling in the preparation process, copper alloys with higher therma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/06B22D11/06
CPCB22D11/0611C22C9/06
Inventor 吕建伟谢旭霞杜宇金兆伟
Owner BEIJING ELECTRIC POWER AUTOMATION EQUIP CO LTD
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