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Method and apparatus for making copper and/or copper alloy ingot bar with smooth surface and without contraction cavities

A smooth surface, copper alloy technology, applied in the direction of manufacturing tools, casting workshops, casting equipment, etc., can solve the problems of lower product qualification rate and large shrinkage cavity

Inactive Publication Date: 2006-02-08
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the ingot is manufactured by casting in a common mold, a large shrinkage cavity is generated in the upper part of the ingot, and the shrinkage cavity must be cut from the ingot to remove the shrinkage cavity, which usually results in a lower product yield

Method used

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  • Method and apparatus for making copper and/or copper alloy ingot bar with smooth surface and without contraction cavities
  • Method and apparatus for making copper and/or copper alloy ingot bar with smooth surface and without contraction cavities
  • Method and apparatus for making copper and/or copper alloy ingot bar with smooth surface and without contraction cavities

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Embodiment 1

[0023] like figure 1 As shown, at the bottom of the casting type melting furnace 10, an electrolytic copper with a purity of more than 99.9999% by weight is melted in a high-purity argon atmosphere with a dew point temperature lower than -5°C. Argon gas was blown into the molten copper metal obtained from the previous melting process to remove hydrogen in the molten copper metal, and the temperature of the molten copper metal was maintained at 1250°C.

[0024] In the heating furnace 2, the casting mold 1 is placed on the cooling support 4, the bottom of the support is cooled by water, and the inner space of the heating furnace 2 is filled with high-purity argon gas whose dew point temperature is lower than -5°C. The side walls of the casting mold 1 are heated by three heating elements. The upper side of the mold is heated to 1080°C by the heating element A, the middle part of the side wall of the mold 1 is heated to 950°C, and the lower part of the side wall of the mold 1 is ...

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Abstract

The present invention provides a method for making copper and / or copper alloy ingot which has no shrinkage and whose surface is smooth and has no crumple and its equiopment. Said equipment includes a bottom pouring type melting furnace and a heating furnace for heating mould, the mould can be used for receiving poured melting metal. Said method includes the following steps: melting copper and / or copper alloy material, pouring the molten copper and / or copper alloy into cylindrical mould, placing said mould on the cooled support, heating bottom of surface and heating side surface by means of heating furnace so as to form temp. gradient, its temp. is risen from bottom of mould to upper portion.

Description

technical field [0001] The present invention relates to a method and device for manufacturing copper and / or copper alloy ingots with no shrinkage cavity inside and smooth outer surface without wrinkles, in particular to a method and device for manufacturing high-purity, no shrinkage cavity and smooth surface with a purity of more than 99.9999% by weight Method and apparatus for wrinkling-free copper ingots. Background technique [0002] Copper and / or copper alloy ingots are usually produced by casting molten copper and / or copper alloys into a conventional mold or into a continuous casting mold. [0003] However, when the ingot is manufactured by casting in a common mold, a large shrinkage cavity is generated in the upper part of the ingot, and the shrinkage cavity must be cut from the ingot to remove the shrinkage cavity, which usually results in a lower product yield . When the ingot is manufactured by casting in the continuous casting mold, wrinkles will be generated on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D27/04B22D5/00B22D21/00
CPCB22D27/045
Inventor 矢岛健児石田德和古柴丰野上敬司柿本明广
Owner MITSUBISHI MATERIALS CORP