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Method for rolling tungsten copper thin plate with high tungsten content

A technology of tungsten copper and high content, which is applied in metal rolling and other directions, can solve the problem of difficult combination of two-phase interface, achieve the effect of improving performance, wide application range, and meeting thickness requirements

Active Publication Date: 2013-12-11
XIAN KANGBEN MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses hot rolling to roll the plate-shaped tungsten-copper billet with high tungsten content. By controlling the heating temperature and rolling parameters, after the total rolling deformation rate reaches 60%, the two phases of tungsten and copper have become fibrous. A more uniform structure overcomes the difficulty of dense bonding of the two-phase interface due to the incompatibility between tungsten and copper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The rolling method of the high-tungsten-content tungsten-copper thin plate in this embodiment is as follows: the plate-shaped high-tungsten-content tungsten-copper blank with a thickness of 12mm prepared by the infiltration method is placed in a heating furnace, and then heated to 700°C under hydrogen protection conditions. Heat preservation for 60 minutes; preheat the rolls of the hot rolling mill to 300°C, then apply graphite emulsion lubricant to the rolls, and roll the tungsten copper billet after heat preservation, and the rolling reduction of each pass is 15% in turn , 15%, 15%, 15%, 14%, 12%, 12%, 12%, 10%, 9%, 8%, 8%, 7% and 7%, the billet is returned to the furnace for heat preservation after each rolling pass Carry out the next rolling after 8 minutes, and finally obtain a high-tungsten-content tungsten-copper thin plate with a thickness of 2.2 mm; and unavoidable impurities.

[0019] The total deformation rate of rolling in this embodiment is 81.6%, and the ...

Embodiment 2

[0021] The rolling method of the high-tungsten-content tungsten-copper thin plate in this embodiment is as follows: the plate-shaped high-tungsten-content tungsten-copper billet prepared by the infiltration method with a thickness of 3 mm is placed in a heating furnace, and then heated to 900 ° C under hydrogen protection conditions. Keep warm for 30 minutes; preheat the rolls of the hot rolling mill to 500°C, then apply graphite emulsion lubricant to the rolls, and roll the tungsten-copper billet after heat preservation, and the rolling reduction of each pass is 15% in turn . A high-tungsten-content tungsten-copper thin plate with a thickness of 1 mm is obtained; the mass percentage of tungsten in the plate-shaped high-tungsten-content tungsten-copper billet is 90%, and the balance is copper and unavoidable impurities.

[0022] The total deformation rate of rolling in this embodiment is 66.7%, and the two phases of tungsten and copper have become fibrous and more uniform. The...

Embodiment 3

[0024] The rolling method of the high-tungsten-content tungsten-copper thin plate in this embodiment is as follows: the plate-shaped high-tungsten-content tungsten-copper billet with a thickness of 7 mm prepared by the infiltration method is placed in a heating furnace, and then heated to 800 ° C under hydrogen protection conditions. Keep warm for 45 minutes; preheat the rolls of the hot rolling mill to 300°C, then apply graphite emulsion lubricant to the rolls, and roll the heat-insulated tungsten-copper billet, with the rolling reduction of each pass being 15% . Finally, a high-tungsten-content tungsten-copper thin plate with a thickness of 2 mm is obtained; the mass percentage of tungsten in the plate-shaped high-tungsten-content tungsten-copper billet is 80%, and the balance is copper and unavoidable impurities.

[0025] The total deformation rate of rolling in this embodiment is 71.4%, and the two phases of tungsten and copper have become fibrous and more uniform. The den...

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Abstract

The invention discloses a method for rolling a tungsten copper thin plate with high tungsten content. The method for rolling the tungsten copper thin plate with high tungsten content comprises the following steps of: placing plate-shaped tungsten copper blanks with high tungsten content and the thickness of 3 to 12 mm into a heating furnace; heating to 700 to 900 DEG C under the hydrogen protection condition; preserving the heat for 30 to 60 minutes; preheating a roller of a hot rolling mill to 300 to 500 DEG C; and rolling the tungsten copper blanks subjected to heat preservation to obtain the tungsten copper thin plate with high tungsten content and the thickness of 1 to 2.2 mm. The plate-shaped tungsten copper plate with high tungsten content is rolled by a hot rolling method; the heating temperature and rolling parameters are controlled; after the rolling total deformation rate reaches 60 percent, two phases such as tungsten and copper are changed into the fiber-shaped and uniform tissue, so the problem that the interfaces of the two phases are compact and difficult to combine because the tungsten and the copper are insoluble mutually is solved.

Description

technical field [0001] The invention belongs to the technical field of tungsten-copper material preparation, and in particular relates to a rolling method of a tungsten-copper thin plate with high tungsten content. Background technique [0002] Tungsten copper is a pseudoalloy composed of high melting point, high strength tungsten and high electrical and thermal conductivity copper. Because of its good corrosion resistance, welding resistance, high strength and high hardness, it is currently widely used as an electrical Contact materials, plasma electrode materials, military materials for high temperature, heat sink substrates and packaging materials. With the continuous development of high technology, the requirements for the performance of tungsten copper materials are also getting higher and higher. For example, high strength and high airtightness require a relative density close to full density, and the shape of complex shape parts is close to the finished shape. Tradit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B3/00B21B1/26
Inventor 赵艳平赵亚民杜晓斌周喜军李文强原选民
Owner XIAN KANGBEN MATERIAL