A cu‑zr‑ag alloy crystallizer copper plate and preparation process thereof

A crystallizer copper plate and alloy technology, applied in the field of continuous casting equipment components, can solve the problems of poor thermal conductivity, high casting speed mold, low recrystallization temperature, high temperature creep of copper plate, etc., so as to reduce the frequency of abnormal offline and improve The effect of performance and material high temperature creep resistance enhancement

Active Publication Date: 2017-01-25
XIXIA LONGCHENG SPECIAL MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the proposal of energy saving, emission reduction and elimination of backward production capacity by domestic iron and steel enterprises, various domestic iron and steel enterprises have increased the production efficiency of equipment. From the perspective of continuous casting equipment, it is to improve the utilization efficiency of continuous casting machines and increase the casting speed of casting machines. The casting speed of the casting machine is increased from the original 0.5-1.5m / min to 1.2-2.8m / min. From the perspective of continuous casting, it means to improve the utilization efficiency of the continuous casting machine and increase the casting speed of the casting machine, thereby reducing the production cost. The material requirements for the mold copper plate, the core component of the continuous casting mold, are even higher. The core is to greatly increase the service life of the mold copper plate at high casting speeds. The existing mold copper plates mainly include Ag-Cu material mold copper plates and Cu-Cr-Zr mold copper plate; due to the low recrystallization temperature and low strength of Ag-Cu copper plate, with the increase of casting speed, its performance has been insufficient, and the high temperature creep of copper plate will lead to a decrease in life; Cu-Cr- Although the Zr copper plate has high strength, its thermal conductivity is poor and it is difficult to meet the needs of high-speed crystallizers. Therefore, there is an urgent need for a copper plate with higher thermal conductivity than Cu-Cr-Zr crystallizer, and higher strength and recrystallization temperature than Ag- The Cu mold copper plate is high and the mold copper plate with better wear resistance is applied to the continuous casting machine under the condition of high casting speed

Method used

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  • A cu‑zr‑ag alloy crystallizer copper plate and preparation process thereof

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Experimental program
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Effect test

Embodiment 1

[0042] A kind of preparation technology of Cu-Zr-Ag alloy crystallizer copper plate, it comprises the steps:

[0043] a. Obtain the cast slab of Cu-Zr-Ag alloy through vacuum smelting and vacuum casting, its alloy formula and the process parameters of vacuum smelting and vacuum casting are as follows:

[0044] Metal zirconium mass percent: 0.13%, metallic silver mass percent: 0.11%, deoxidizer metallic magnesium mass percent: 0.04%, metallic copper mass percent: 99.72%,

[0045] Refining vacuum degree: ≤30Pa, refractory funnel aperture: 36mm, refining temperature: 1350°C, vacuum degree after filling with argon: -0.08MPa, pouring temperature: 1280°C;

[0046] b. After determining the forging deformation direction, the Cu-Zr-Ag alloy billet is hot forged, and the process is as follows:

[0047] Hot forging heating time: 3h, initial forging temperature: 800°C, forging deformation: 28mm, final forging temperature: 630°C;

[0048] c. The Cu-Zr-Ag alloy plate after hot forging i...

Embodiment 2

[0056] A kind of preparation technology of Cu-Zr-Ag alloy crystallizer copper plate, it comprises the steps:

[0057] a. Obtain the cast slab of Cu-Zr-Ag alloy through vacuum smelting and vacuum casting, its alloy formula and the process parameters of vacuum smelting and vacuum casting are as follows:

[0058] Metal zirconium mass percent: 0.08%, metallic silver mass percent: 0.11%, deoxidizer metallic magnesium mass percent: 0.04%, metallic copper mass percent: 99.77%,

[0059] Refining vacuum degree: ≤30Pa, refractory funnel aperture: 36mm, refining temperature: 1350°C, vacuum degree after filling with argon: -0.08MPa, pouring temperature: 1280°C;

[0060] b. After determining the forging deformation direction, the Cu-Zr-Ag alloy billet is hot forged, and the process is as follows:

[0061] Hot forging heating time: 3h, initial forging temperature: 800°C, forging deformation: 28mm, final forging temperature: 630°C;

[0062] c. The Cu-Zr-Ag alloy plate after hot forging i...

Embodiment 3

[0070] A kind of preparation technology of Cu-Zr-Ag alloy crystallizer copper plate, it comprises the steps:

[0071] a. Obtain the cast slab of Cu-Zr-Ag alloy through vacuum smelting and vacuum casting, its alloy formula and the process parameters of vacuum smelting and vacuum casting are as follows:

[0072] Metal zirconium mass percent: 0.13%, metallic silver mass percent: 0.06%, deoxidizer metallic magnesium mass percent: 0.04%, metallic copper mass percent: 99.77%,

[0073] Refining vacuum degree: ≤30Pa, refractory funnel aperture: 36mm, refining temperature: 1350°C, vacuum degree after filling with argon: -0.08MPa, pouring temperature: 1280°C;

[0074] b. After determining the forging deformation direction, the Cu-Zr-Ag alloy billet is hot forged, and the process is as follows:

[0075] Hot forging heating time: 3h, initial forging temperature: 800°C, forging deformation: 28mm, final forging temperature: 630°C;

[0076] c. The Cu-Zr-Ag alloy plate after hot forging i...

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Abstract

The invention discloses a Cu-Zr-Ag alloy crystallizer copper plate, containing metal Zr of 0.05 to 0.25wt%, deoxidizing agent metal Mg of 0.05wt%, metal Ag of 0.06 to 0.15wt% and metal Cu of 99.65 to 99.77wt%. The invention also discloses a preparation process of the Cu-Zr-Ag alloy crystallizer copper plate, which has better heat conductivity and high pulling resistance and higher softening temperature, the service life of the crystallizer copper plate is prolonged, pull speed of a slab casting machine is improved, production efficiency of slabs is greatly improved, and the copper plate is a novel long-service life crystallizer copper plate suitable for high-pull speed, high-efficiency, high-pace and high-yield continuous casting operation.

Description

technical field [0001] The invention belongs to the technical field of continuous casting equipment components, and in particular relates to a Cu-Zr-Ag alloy crystallizer copper plate and a preparation process thereof. Background technique [0002] With the proposal of energy saving, emission reduction and elimination of backward production capacity by domestic iron and steel enterprises, various domestic iron and steel enterprises have increased the production efficiency of equipment. From the perspective of continuous casting equipment, it is to improve the utilization efficiency of continuous casting machines and increase the casting speed of casting machines. The casting speed of the casting machine is increased from the original 0.5-1.5m / min to 1.2-2.8m / min. From the perspective of continuous casting, it means to improve the utilization efficiency of the continuous casting machine and increase the casting speed of the casting machine, thereby reducing the production cost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/02C22F1/08
Inventor 朱书成赵家亮黄国团马超王硕
Owner XIXIA LONGCHENG SPECIAL MATERIALS CO LTD
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