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Iron-based high-temperature material

A high-temperature material, iron-based technology, applied in the field of materials, can solve problems such as low electrical conductivity, large linear expansion coefficient, and loss of electrode thermal stress

Inactive Publication Date: 2018-02-16
广西双宸贸易有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the conductive materials used in electrochemistry and electrometallurgy are mainly high-quality carbon steel, or coating on its surface, but its own low conductivity and large linear expansion coefficient cannot be used with non-metallic graphite and other electrode materials at high temperatures. The combination of the electrode has caused the electrode to lose its function due to thermal stress

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, the composition and mass percentage of the iron-based high-temperature material are:

[0027] Al 1wt%, Ni 0.4wt%, Mg 0.08wt%, Cu 0.3wt%, Cr 0.12%, Zn0.4wt%, Be0.03wt%, Ti 0.5wt%, Co 0.06wt%, Zr 0.12wt%, Ga 0.05 wt%, Hf 0.04wt%, the balance is Fe.

[0028] The iron-based high-temperature material provided in this embodiment is prepared by first mixing raw materials according to the above mass percentages, and then preparing them in a vacuum melting furnace. The iron-based high-temperature material provided by the present invention can also be prepared by other methods, not limited to the vacuum smelting method.

[0029] The properties of the iron-based high-temperature material prepared in this example were tested. The electrical conductivity of the cathode conductive rod prepared with the iron-based high-temperature material of Example 1 is 12.4IACS% at 400°C, and 8.1IACS% at 500°C. The electrical conductivity is less affected by temperature, and t...

Embodiment 2

[0031] In this embodiment, the composition and mass percentage of the iron-based high-temperature material are:

[0032] Al 0.8wt%, Ni 0.6wt%, Mg 0.04wt%, Cu 0.5wt%, Cr 0.08%, Zn 0.6wt%, Be0.01wt%, Ti 0.9wt%, Co 0.05wt%, Zr 0.15wt%, Ga0 .02wt%, Hf 0.08wt%, the balance is Fe.

[0033] The iron-based high-temperature material provided in this embodiment is prepared by first mixing raw materials according to the above mass percentages, and then preparing them in a vacuum melting furnace. The iron-based high-temperature material provided by the present invention can also be prepared by other methods, not limited to the vacuum smelting method.

[0034] The properties of the iron-based high-temperature material prepared in this example were tested. The electrical conductivity of the cathode conductive rod prepared with the iron-based high-temperature material of Example 2 is 12.1IACS% at 400°C, and 8.3IACS% at 500°C. The electrical conductivity is less affected by temperature, and...

Embodiment 3

[0036] In this embodiment, the composition and mass percentage of the iron-based high-temperature material are:

[0037] Al 1.5wt%, Ni 0.2wt%, Mg 0.16wt%, Cu 0.1wt%, Cr 0.18%, Zn 0.2wt%, Be0.05wt%, Ti 0.1wt%, Co 0.12wt%, Zr 0.06wt%, Ga0 .07wt%, Hf 0.01wt%, the balance being Fe.

[0038] The iron-based high-temperature material provided in this embodiment is prepared by first mixing raw materials according to the above mass percentages, and then preparing them in a vacuum melting furnace. The iron-based high-temperature material provided by the present invention can also be prepared by other methods, not limited to the vacuum smelting method.

[0039] The properties of the iron-based high-temperature material prepared in this example were tested. The electrical conductivity of the cathode conductive rod prepared with the iron-based high-temperature material of Example 1 is 12.2IACS% at 400°C, and 8.2IACS% at 500°C. The electrical conductivity is less affected by temperature, ...

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Abstract

The invention provides an iron-based high-temperature material which comprises the following elements in percentages by weight: 0.8-1.5wt% of Al, 0.2-0.6wt% of Ni, 0.04-0.16wt% of Mg, 0.1-0.6wt% of Cu, 0.08-0.18wt% of Cr, 0.2-0.6wt% of Zn, 0.01-0.05% of Be, 0.1-1wt% of Ti, 0.05-0.12wr% of Co, 0.06-0.15wt% of Zr, 0.02-90.07wt% of Ga, 0.01-0.08wt% of Hf and the balance of Fe. Compared with the priorart, the elements of Al, Ni, Mg, Cu, Cr, Zn, Be, Ti, Co, Zr, Ga, Hf, Fe and the like are combined in use and interact, so that the high-temperature resistance and the conducting property of the iron-based high-temperature material are improved, and the linear expansion coefficient of the iron-based high-temperature material is reduced.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to an iron-based high-temperature material. Background technique [0002] Electrode material In the process of resistance welding, the electrode is responsible for three important functions: conduct current to the workpiece, transmit pressure to the workpiece, and rapidly dissipate heat in the welding zone. Based on the above-mentioned functions of the electrode material, it is required that the material for making the electrode has sufficient electrical conductivity, thermal conductivity and high-temperature hardness, and the structure of the electrode must have sufficient strength and rigidity, as well as sufficient cooling conditions. In addition, the contact resistance between the electrode and the workpiece should be low enough to prevent melting of the workpiece surface or alloying between the electrode and the workpiece surface. [0003] Copper and aluminum have high elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/06C22C38/42C22C38/50C22C38/52
CPCC22C38/06C22C38/002C22C38/42C22C38/50C22C38/52
Inventor 周舜宁
Owner 广西双宸贸易有限责任公司
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